US20030062532A1 - Color filter substrate and method of fabricating the same - Google Patents
Color filter substrate and method of fabricating the same Download PDFInfo
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- US20030062532A1 US20030062532A1 US10/254,767 US25476702A US2003062532A1 US 20030062532 A1 US20030062532 A1 US 20030062532A1 US 25476702 A US25476702 A US 25476702A US 2003062532 A1 US2003062532 A1 US 2003062532A1
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- color filter
- substrate
- layer
- thermal transfer
- transcription film
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133514—Colour filters
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133305—Flexible substrates, e.g. plastics, organic film
Definitions
- the present invention relates to a liquid crystal display device substrate, and more particularly, to a color filter substrate and method of fabricating a color filter substrate for a liquid crystal display device.
- a liquid crystal display (LCD) device includes upper and lower substrates with a liquid crystal material layer disposed therebetween.
- One of the upper or lower substrates commonly includes a color filter layer for displaying color images.
- the color filter layer may commonly include sub-color filters of red (R), green (G), and blue (B).
- the color filter layer is formed by various methods including a dyeing method, an electro-deposition method, a pigment dispersion method, and a printing method, for example.
- the pigment dispersion method is commonly used because it forms a fine pattern.
- FIG. 1 is a cross-sectional view of a liquid crystal display device according to the related art.
- the LCD device includes first and second substrates 31 and 11 , which are spaced apart and face each other, a liquid crystal material layer 50 is interposed between the first and second substrates 31 and 11 , and a thin film transistor “T” is formed on the inner surface of the first substrate 31 .
- a pixel electrode 32 of a transparent conducting material is formed on the first substrate 31 , and the pixel electrode 32 is disposed at a pixel region “P.”
- the pixel electrode 32 is connected to the thin film transistor “T,” which functions as a switching device for transmitting signals to the pixel electrode 32 .
- a first alignment layer 34 covers the thin film transistor “T” and the pixel electrode 32 .
- the thin film transistor “T” includes a gate electrode connected to a scanning line, an active layer formed on the gate electrode, and source and drain electrodes separated apart from each other on the active layer, wherein a portion of the active layer exposed between the source and drain electrodes forms a channel of the thin film transistor.
- a black matrix 12 is formed on the inner surface of the second substrate 11 , and a color filter 14 is formed on the black matrix 12 .
- the color filter 14 includes the three sub-color filters of red (R), green (G), and blue (B) disposed in the pixel region “P” and overlaps the black matrix 12 .
- a common electrode 18 made of a transparent conducting material is formed on the color filter 14 , and a second alignment layer 20 is formed on the common electrode 18 .
- the liquid crystal material layer 50 is disposed between the first alignment layer 34 and the second alignment layer 20 , wherein preliminary alignment of liquid crystal molecules of the liquid crystal material layer 50 is dependent upon characteristics of the alignment layers 34 and 20 .
- first and second polarization films 36 and 22 are arranged outer surfaces of the first and second substrates 31 and 11 , respectively, wherein transmission axes of the first and second polarization films 36 and 22 are perpendicular to each other.
- FIGS. 2A to 2 D are cross-sectional views of a fabrication method for a color filter substrate of the liquid crystal display device of FIG. 1 according to the related art.
- the black matrix 12 is formed on the second transparent substrate 11 , wherein the black matrix 12 has an opening corresponding to the pixel region “P.”
- the second transparent substrate 11 may be made of glass, and the black matrix 12 may be made of an inorganic material such as chromium (Cr), Cr/CrOx, or an organic material that includes carbon.
- the black matrix 12 material includes an inorganic material such as chromium and is formed by a sputtering method under vacuum conditions, whereby the manufacturing process is complicated and expensive.
- forming the black matrix 12 of the organic material is advantageous due to the relatively short manufacturing process, low cost, and high visibility. Accordingly, the organic material is commonly selected for the black matrix 12 .
- the color filter layer 14 is formed within the pixel region “P” on the second transparent substrate 11 having the black matrix 12 .
- the color filter layer 14 overlaps the black matrix 12 , and includes three sub-color filters 14 a , 14 b , and 14 c of red, green, and blue, respectively, and each of the sub-color filters correspond to each of the pixel regions “P.”
- the color filter layer 14 may be formed by the pigment dispersion method, which includes steps of coating a photosensitive color resin on a substrate, exposing the color resin to a light, and developing the color resin.
- the common electrode 18 and the alignment layer 20 are subsequently formed on the color filter layer 14 .
- the common electrode 18 is formed of a transparent conducting material
- the alignment layer 20 is formed of polyimide.
- the polarization film 22 is formed on the outer side of the color filter substrate.
- the polarization film 22 is formed after forming a liquid crystal cell by aligning and attaching the color filter substrate and an array substrate.
- the array substrate is fabricated by processes of deposition and patterning a thin film using several masks; injecting liquid crystal materials; and sealing.
- the second transparent substrate 11 is chemically processed. Accordingly, the second transparent substrate 11 must be formed of specific materials that are chemically resistant.
- an overcoat layer (not shown) may be formed on the color filter layer 14 to flatten an inner surface of the second transparent substrate 11 . Accordingly, a total number of manufacturing processes is increased, thereby increasing manufacturing costs.
- the present invention is directed to a color filter substrate for a liquid crystal display device and a manufacturing method of the color filter substrate that substantially obviates one or more of problems due to limitations and disadvantages of the related art.
- An object of the present invention is to provide a color filter substrate and a method of manufacturing a color filter substrate that reduces a total number of manufacturing processes and reduces manufacturing costs.
- a color filter substrate for a liquid crystal display device includes a polarizing substrate, a black matrix positioned on the polarizing substrate, a color filter layer positioned on the black matrix, and a common electrode positioned on the color filter layer.
- a method of fabricating a color filter substrate for a liquid crystal display device includes steps of forming a black matrix on a polarizing substrate, forming a color filter layer on the black matrix, and forming a common electrode on the color filter layer.
- a method of fabricating a color filter substrate for a liquid crystal display device includes steps of aligning a first transcription film having a black resin layer, a first light-to-heat conversion layer, and a first supporting film, sequentially formed onto a polarizing substrate, selectively performing a first thermal transfer process on a first portion of the first transcription film, removing the first transcription film except for the first portion where the first thermal transfer process is performed, thereby forming a black matrix on the polarizing substrate, aligning a second transcription film having a color filter layer, a second light-to-heat conversion layer, and a second supporting film, sequentially formed onto the polarizing substrate including the black matrix, selectively performing a second thermal transfer process on a first portion of the second transcription film, removing the second transcription film except for the first portion of the second transcription film where the second thermal transfer process is performed, thereby forming a color filter on the polarizing substrate including the black matrix, and forming a common electrode on the color filter.
- FIG. 1 is a cross-sectional view of a liquid crystal display device according to the related art
- FIGS. 2A to 2 D are cross-sectional views of a fabrication method for a color filter substrate of the liquid crystal display device of FIG. 1 according to the related art
- FIG. 3 is a cross-sectional view of an exemplary color filter substrate for a liquid crystal display device according to the present invention.
- FIG. 4 is a flow chart of an exemplary process for fabricating a color filter substrate according to the present invention.
- FIGS. 5A to 5 D are cross-sectional views of an exemplary method for fabricating a color filter substrate according to the present invention.
- FIG. 3 is a cross-sectional view of an exemplary color filter substrate for a liquid crystal display device according to the present invention.
- the exemplary color filter substrate may include a polarizing substrate 100 having a pixel region “P.”
- the polarizing substrate 100 may function both as a substrate to support elements and as a polarizer.
- a black matrix 102 may be formed on the polarizing substrate 100 , and the black matrix 102 may include an opening corresponding to the pixel region “P.”
- a color filter layer 104 may be formed on the black matrix 102 to overlap the black matrix 102 .
- the color filter layer 104 may include three sub-color filters 104 a , 104 b , and 104 c of red (R), green (G), and blue (B), respectively, wherein each of the sub-color filters 104 a , 104 b , and 104 c may correspond to each of the pixel regions “P.”
- the color filter layer 104 may include a substantially flat surface.
- a common electrode 106 made of a transparent conducting material may be formed on the color filter layer 104 , and an alignment layer 108 may be formed on the common electrode 106 .
- the color filter layer 104 may be formed using a thermal transfer method, which may be commonly referred to as a thermal imaging method.
- a thermal transfer method a laser beam may be irradiated onto a transcription film, thereby transferring a pattern onto a substrate. Accordingly, in the thermal transfer method, since manufacturing steps of coating and developing are not necessary, a total number of manufacturing processes is decreased as compared to a pigment dispersed method.
- FIG. 4 is a flow chart of an exemplary process for fabricating a color filter substrate according to the present invention.
- a first step ST 1 may include preparation of a substrate and a transcription film.
- the substrate of step ST 1 may include the polarizing substrate of FIG. 3.
- the transcription film may include a color filter layer, a light-to-heat conversion (LTHC) layer, and a supporting film.
- the LTHC layer may be made of a material that emits heat by application of energy from a laser beam, for example, and may be disposed between the color filter layer and the supporting film.
- the transcription film may be aligned on the substrate. Accordingly, the color filter layer of the transcription film may contact the substrate.
- an adhesive layer may be formed between the color filter layer and the substrate. The adhesive layer may be formed on the substrate or on the color filter layer of the transcription film.
- a laser beam may be irradiated onto the aligned transcription film on the substrate. Then, the color filter layer may be exposed to a laser beam and transferred to the substrate by the LTHC layer.
- step ST 4 the LTHC layer and the supporting film may be removed from the transcription film, whereby a color filter layer may remain on the substrate.
- a color filter layer including sub-color filters red, green, and blue may be formed on the substrate.
- FIGS. 5A to 5 D are cross-sectional views of an exemplary method for fabricating a color filter substrate according to the present invention.
- a black matrix 102 may be formed on a polarizing substrate 100 .
- the black matrix 102 may be formed by a thermal transfer method as described above in FIG. 4, in which a transcription film including a black resin layer may be used.
- the black matrix 102 may include an opening corresponding to a pixel region “P.”
- a first thermal transfer method of forming the black matrix 102 may use a transcription film, which has a black resin layer in place of the color filter layer of FIG. 4 and the black resin layer may include carbon.
- the polarizing substrate 100 may function as both a substrate and a polarizer, and may include a plastic material such as polyvinyl alcohol (PVA).
- PVA polyvinyl alcohol
- a color filter layer 104 may be formed on the black matrix 102 by the same process shown in FIG. 4.
- the color filter layer 104 may include three sub-color filters 104 a , 104 b , and 104 c of red, green, and blue, respectively. Accordingly, since the black matrix 102 and the color filter layer 104 are formed by the thermal transfer method, the substrate does not necessarily have to be chemical resistant. Thus, a substrate made of a plastic material, which is cheaper than glass material, may be used.
- an overcoat layer may not necessarily be required in order to planarize the surface of the polarizing substrate 100 , including the color filter layer 104 and the black matrix 102 . Therefore, a total number of manufacturing processes and manufacturing expenses may be reduced.
- a common electrode 106 may be formed by depositing a transparent conductive material on the color filter layer 104 . Then, the transparent conductive material may be patterned.
- the transparent conductive material may include Indium-Tin-Oxide (ITO) or Indium-Zinc-Oxide (IZO), for example. Alternatively, the transparent conductive material may be selectively formed such that subsequent patterning is unnecessary.
- an alignment layer 108 may be formed on the common electrode 106 , and may include a high molecular material such as polyimide.
- the alignment layer 108 may function to control alignment of liquid crystal molecules of a liquid crystal material layer that may be subsequently formed on the alignment layer 108 .
- the alignment of the liquid crystal molecules may be controlled by a rubbing method or a photo-aligning method.
Abstract
Description
- The present invention claims the benefit of Korean Patent Application No. P2001-060618 filed in Korea on Sep. 28, 2001, which is hereby incorporated by reference.
- 1. Field of the Invention
- The present invention relates to a liquid crystal display device substrate, and more particularly, to a color filter substrate and method of fabricating a color filter substrate for a liquid crystal display device.
- 2. Discussion of the Related Art
- In general, a liquid crystal display (LCD) device includes upper and lower substrates with a liquid crystal material layer disposed therebetween. One of the upper or lower substrates commonly includes a color filter layer for displaying color images. The color filter layer may commonly include sub-color filters of red (R), green (G), and blue (B). The color filter layer is formed by various methods including a dyeing method, an electro-deposition method, a pigment dispersion method, and a printing method, for example. In general, the pigment dispersion method is commonly used because it forms a fine pattern.
- FIG. 1 is a cross-sectional view of a liquid crystal display device according to the related art. In FIG. 1, the LCD device includes first and
second substrates crystal material layer 50 is interposed between the first andsecond substrates first substrate 31. Apixel electrode 32 of a transparent conducting material is formed on thefirst substrate 31, and thepixel electrode 32 is disposed at a pixel region “P.” Thepixel electrode 32 is connected to the thin film transistor “T,” which functions as a switching device for transmitting signals to thepixel electrode 32. Afirst alignment layer 34 covers the thin film transistor “T” and thepixel electrode 32. Although not shown, the thin film transistor “T” includes a gate electrode connected to a scanning line, an active layer formed on the gate electrode, and source and drain electrodes separated apart from each other on the active layer, wherein a portion of the active layer exposed between the source and drain electrodes forms a channel of the thin film transistor. - In FIG. 1, a
black matrix 12 is formed on the inner surface of thesecond substrate 11, and acolor filter 14 is formed on theblack matrix 12. Thecolor filter 14 includes the three sub-color filters of red (R), green (G), and blue (B) disposed in the pixel region “P” and overlaps theblack matrix 12. Acommon electrode 18 made of a transparent conducting material is formed on thecolor filter 14, and asecond alignment layer 20 is formed on thecommon electrode 18. The liquidcrystal material layer 50 is disposed between thefirst alignment layer 34 and thesecond alignment layer 20, wherein preliminary alignment of liquid crystal molecules of the liquidcrystal material layer 50 is dependent upon characteristics of thealignment layers second polarization films second substrates second polarization films - FIGS. 2A to2D are cross-sectional views of a fabrication method for a color filter substrate of the liquid crystal display device of FIG. 1 according to the related art. In FIG. 2A, the
black matrix 12 is formed on the secondtransparent substrate 11, wherein theblack matrix 12 has an opening corresponding to the pixel region “P.” The secondtransparent substrate 11 may be made of glass, and theblack matrix 12 may be made of an inorganic material such as chromium (Cr), Cr/CrOx, or an organic material that includes carbon. Here, theblack matrix 12 material includes an inorganic material such as chromium and is formed by a sputtering method under vacuum conditions, whereby the manufacturing process is complicated and expensive. Conversely, forming theblack matrix 12 of the organic material is advantageous due to the relatively short manufacturing process, low cost, and high visibility. Accordingly, the organic material is commonly selected for theblack matrix 12. - In FIG. 2B, the
color filter layer 14 is formed within the pixel region “P” on the secondtransparent substrate 11 having theblack matrix 12. Thecolor filter layer 14 overlaps theblack matrix 12, and includes threesub-color filters color filter layer 14 may be formed by the pigment dispersion method, which includes steps of coating a photosensitive color resin on a substrate, exposing the color resin to a light, and developing the color resin. - In FIG. 2C, the
common electrode 18 and thealignment layer 20 are subsequently formed on thecolor filter layer 14. Thecommon electrode 18 is formed of a transparent conducting material, and thealignment layer 20 is formed of polyimide. Thus, a color filter substrate is completed. - In FIG. 2D, the
polarization film 22 is formed on the outer side of the color filter substrate. Although not shown, thepolarization film 22 is formed after forming a liquid crystal cell by aligning and attaching the color filter substrate and an array substrate. The array substrate is fabricated by processes of deposition and patterning a thin film using several masks; injecting liquid crystal materials; and sealing. - In the fabrication method of FIGS. 2A to2D, as the color filter substrate is fabricated using a photolithographic process, the second
transparent substrate 11 is chemically processed. Accordingly, the secondtransparent substrate 11 must be formed of specific materials that are chemically resistant. In addition, an overcoat layer (not shown) may be formed on thecolor filter layer 14 to flatten an inner surface of the secondtransparent substrate 11. Accordingly, a total number of manufacturing processes is increased, thereby increasing manufacturing costs. - Accordingly, the present invention is directed to a color filter substrate for a liquid crystal display device and a manufacturing method of the color filter substrate that substantially obviates one or more of problems due to limitations and disadvantages of the related art.
- An object of the present invention is to provide a color filter substrate and a method of manufacturing a color filter substrate that reduces a total number of manufacturing processes and reduces manufacturing costs.
- Additional features and advantages of the invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
- To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described, a color filter substrate for a liquid crystal display device includes a polarizing substrate, a black matrix positioned on the polarizing substrate, a color filter layer positioned on the black matrix, and a common electrode positioned on the color filter layer.
- In another aspect, a method of fabricating a color filter substrate for a liquid crystal display device includes steps of forming a black matrix on a polarizing substrate, forming a color filter layer on the black matrix, and forming a common electrode on the color filter layer.
- In another aspect, a method of fabricating a color filter substrate for a liquid crystal display device includes steps of aligning a first transcription film having a black resin layer, a first light-to-heat conversion layer, and a first supporting film, sequentially formed onto a polarizing substrate, selectively performing a first thermal transfer process on a first portion of the first transcription film, removing the first transcription film except for the first portion where the first thermal transfer process is performed, thereby forming a black matrix on the polarizing substrate, aligning a second transcription film having a color filter layer, a second light-to-heat conversion layer, and a second supporting film, sequentially formed onto the polarizing substrate including the black matrix, selectively performing a second thermal transfer process on a first portion of the second transcription film, removing the second transcription film except for the first portion of the second transcription film where the second thermal transfer process is performed, thereby forming a color filter on the polarizing substrate including the black matrix, and forming a common electrode on the color filter.
- It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.
- The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention. In the drawings:
- FIG. 1 is a cross-sectional view of a liquid crystal display device according to the related art;
- FIGS. 2A to2D are cross-sectional views of a fabrication method for a color filter substrate of the liquid crystal display device of FIG. 1 according to the related art;
- FIG. 3 is a cross-sectional view of an exemplary color filter substrate for a liquid crystal display device according to the present invention;
- FIG. 4 is a flow chart of an exemplary process for fabricating a color filter substrate according to the present invention; and
- FIGS. 5A to5D are cross-sectional views of an exemplary method for fabricating a color filter substrate according to the present invention.
- Reference will now be made in detail to the preferred embodiments of the present invention, which is illustrated in the accompanying drawings.
- FIG. 3 is a cross-sectional view of an exemplary color filter substrate for a liquid crystal display device according to the present invention. In FIG. 3, the exemplary color filter substrate may include a
polarizing substrate 100 having a pixel region “P.” Thepolarizing substrate 100 may function both as a substrate to support elements and as a polarizer. Ablack matrix 102 may be formed on thepolarizing substrate 100, and theblack matrix 102 may include an opening corresponding to the pixel region “P.” Acolor filter layer 104 may be formed on theblack matrix 102 to overlap theblack matrix 102. Thecolor filter layer 104 may include threesub-color filters sub-color filters color filter layer 104 may include a substantially flat surface. Acommon electrode 106 made of a transparent conducting material may be formed on thecolor filter layer 104, and analignment layer 108 may be formed on thecommon electrode 106. - In addition, the
color filter layer 104 may be formed using a thermal transfer method, which may be commonly referred to as a thermal imaging method. During the thermal transfer method, a laser beam may be irradiated onto a transcription film, thereby transferring a pattern onto a substrate. Accordingly, in the thermal transfer method, since manufacturing steps of coating and developing are not necessary, a total number of manufacturing processes is decreased as compared to a pigment dispersed method. - FIG. 4 is a flow chart of an exemplary process for fabricating a color filter substrate according to the present invention. In FIG. 4, a first step ST1 may include preparation of a substrate and a transcription film. According to the present invention, the substrate of step ST1 may include the polarizing substrate of FIG. 3. The transcription film may include a color filter layer, a light-to-heat conversion (LTHC) layer, and a supporting film. The LTHC layer may be made of a material that emits heat by application of energy from a laser beam, for example, and may be disposed between the color filter layer and the supporting film.
- In a second step ST2, the transcription film may be aligned on the substrate. Accordingly, the color filter layer of the transcription film may contact the substrate. In addition, an adhesive layer may be formed between the color filter layer and the substrate. The adhesive layer may be formed on the substrate or on the color filter layer of the transcription film.
- In a third step ST3, a laser beam may be irradiated onto the aligned transcription film on the substrate. Then, the color filter layer may be exposed to a laser beam and transferred to the substrate by the LTHC layer.
- In step ST4, the LTHC layer and the supporting film may be removed from the transcription film, whereby a color filter layer may remain on the substrate. In addition, by repeating the first ST1, second ST2, third ST3, and fourth ST4 steps, a color filter layer including sub-color filters red, green, and blue may be formed on the substrate.
- FIGS. 5A to5D are cross-sectional views of an exemplary method for fabricating a color filter substrate according to the present invention. In FIG. 5A, a
black matrix 102 may be formed on apolarizing substrate 100. Theblack matrix 102 may be formed by a thermal transfer method as described above in FIG. 4, in which a transcription film including a black resin layer may be used. Theblack matrix 102 may include an opening corresponding to a pixel region “P.” A first thermal transfer method of forming theblack matrix 102 may use a transcription film, which has a black resin layer in place of the color filter layer of FIG. 4 and the black resin layer may include carbon. Accordingly, thepolarizing substrate 100 may function as both a substrate and a polarizer, and may include a plastic material such as polyvinyl alcohol (PVA). - In FIG. 5B, a
color filter layer 104 may be formed on theblack matrix 102 by the same process shown in FIG. 4. Thecolor filter layer 104 may include threesub-color filters black matrix 102 and thecolor filter layer 104 are formed by the thermal transfer method, the substrate does not necessarily have to be chemical resistant. Thus, a substrate made of a plastic material, which is cheaper than glass material, may be used. In addition, since thecolor filter layer 104 may have a substantially flat surface, an overcoat layer may not necessarily be required in order to planarize the surface of thepolarizing substrate 100, including thecolor filter layer 104 and theblack matrix 102. Therefore, a total number of manufacturing processes and manufacturing expenses may be reduced. - In FIG. 5C, a
common electrode 106 may be formed by depositing a transparent conductive material on thecolor filter layer 104. Then, the transparent conductive material may be patterned. The transparent conductive material may include Indium-Tin-Oxide (ITO) or Indium-Zinc-Oxide (IZO), for example. Alternatively, the transparent conductive material may be selectively formed such that subsequent patterning is unnecessary. - In FIG. 5D, an
alignment layer 108 may be formed on thecommon electrode 106, and may include a high molecular material such as polyimide. Thealignment layer 108 may function to control alignment of liquid crystal molecules of a liquid crystal material layer that may be subsequently formed on thealignment layer 108. The alignment of the liquid crystal molecules may be controlled by a rubbing method or a photo-aligning method. - It will be apparent to those skilled in the art that various modifications and variations can be made in the color filter substrate and method of fabricating a color filter substrate of the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.
Claims (27)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US10/640,372 US6924917B2 (en) | 2001-09-28 | 2003-08-14 | Color filter substrate and method of fabricating the same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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KR1020010060618A KR100764591B1 (en) | 2001-09-28 | 2001-09-28 | Color Filter Panel for Liquid Crystal Display Device using Thermal Imaging and Method of Fabricating the same |
KR2001-60618 | 2001-09-28 |
Related Child Applications (1)
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US10/640,372 Division US6924917B2 (en) | 2001-09-28 | 2003-08-14 | Color filter substrate and method of fabricating the same |
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US20030062532A1 true US20030062532A1 (en) | 2003-04-03 |
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Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
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US10/254,767 Abandoned US20030062532A1 (en) | 2001-09-28 | 2002-09-26 | Color filter substrate and method of fabricating the same |
US10/640,372 Expired - Lifetime US6924917B2 (en) | 2001-09-28 | 2003-08-14 | Color filter substrate and method of fabricating the same |
Family Applications After (1)
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US10/640,372 Expired - Lifetime US6924917B2 (en) | 2001-09-28 | 2003-08-14 | Color filter substrate and method of fabricating the same |
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US (2) | US20030062532A1 (en) |
KR (1) | KR100764591B1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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US20160146985A1 (en) * | 2014-11-25 | 2016-05-26 | Boe Technology Group Co., Ltd. | Color filter substrate and manufacturing method thereof, display panel |
US20160238766A1 (en) * | 2015-02-13 | 2016-08-18 | Shanghai Tianma Micro-electronics Co., Ltd. | Polarizer and fabrication method thereof, display panel, and display device |
GB2563278B (en) * | 2017-06-09 | 2022-10-26 | Univ Southampton | Optoelectronic device and method of manufacturing thereof |
Families Citing this family (9)
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KR20050011548A (en) * | 2003-07-23 | 2005-01-29 | 삼성전자주식회사 | A liquid crystal display panel device including a polarizing film having a rgb filter and manufacturing method thereof |
KR100677062B1 (en) | 2003-11-24 | 2007-02-01 | 엘지.필립스 엘시디 주식회사 | The polarized color filter substrate and method of fabricating for the same |
KR100810631B1 (en) * | 2005-11-17 | 2008-03-06 | 삼성에스디아이 주식회사 | Organic Electroluminescence Display Device And Method For Fabricating Of The Same |
KR100891877B1 (en) * | 2006-08-14 | 2009-04-03 | 참앤씨(주) | Method for repair of plat display panel |
US7932972B2 (en) * | 2006-10-02 | 2011-04-26 | Lg Display Co., Ltd. | Substrate for liquid crystal display device and method of fabricating the same |
KR101386576B1 (en) * | 2008-06-25 | 2014-04-18 | 엘지디스플레이 주식회사 | Liquid crystal display panel |
CN103323968B (en) * | 2013-05-28 | 2015-11-25 | 京东方科技集团股份有限公司 | A kind of display base plate and preparation method thereof, display device |
CN104859696B (en) * | 2015-05-29 | 2016-07-06 | 国网山东济南市历城区供电公司 | Multifunction electric meter is deposited, carriage |
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Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4640583A (en) * | 1983-07-22 | 1987-02-03 | Kabushiki Kaisha Seiko Epson | Display panel having an inner and an outer seal and process for the production thereof |
JPS6146902A (en) | 1984-08-10 | 1986-03-07 | Nitto Electric Ind Co Ltd | Polarizing substrate |
JPH0312632A (en) | 1989-06-12 | 1991-01-21 | Toshiba Corp | Liquid crystal display device |
JPH05241103A (en) * | 1992-02-21 | 1993-09-21 | Nec Corp | Projection type liquid crystal display device |
JP2952143B2 (en) * | 1993-12-21 | 1999-09-20 | キヤノン株式会社 | Manufacturing method of color filter |
JPH07218903A (en) * | 1994-02-01 | 1995-08-18 | Seiko Instr Inc | Multicolor liquid crystal display element |
US5521035A (en) * | 1994-07-11 | 1996-05-28 | Minnesota Mining And Manufacturing Company | Methods for preparing color filter elements using laser induced transfer of colorants with associated liquid crystal display device |
JP3715996B2 (en) * | 1994-07-29 | 2005-11-16 | 株式会社日立製作所 | Liquid crystal display device |
US5576265A (en) * | 1995-04-26 | 1996-11-19 | Eastman Kodak Company | Color filter arrays by stencil printing |
US5792579A (en) * | 1996-03-12 | 1998-08-11 | Flex Products, Inc. | Method for preparing a color filter |
JP3720478B2 (en) * | 1996-07-23 | 2005-11-30 | 富士写真フイルム株式会社 | Photosensitive resin composition |
KR19980028618A (en) * | 1996-10-23 | 1998-07-15 | 손욱 | Manufacturing method of new color filter for liquid crystal display |
KR19990031268A (en) * | 1997-10-10 | 1999-05-06 | 윤종용 | LCD Display |
KR100309918B1 (en) * | 1998-05-16 | 2001-12-17 | 윤종용 | Liquid crystal display having wide viewing angle and method for manufacturing the same |
JP4186255B2 (en) | 1998-05-27 | 2008-11-26 | 凸版印刷株式会社 | Color filter manufacturing method and manufacturing apparatus |
JP2000047200A (en) * | 1998-07-31 | 2000-02-18 | Hitachi Ltd | Diffusive reflector, liquid crystal display device using that, and its production |
JP2000056122A (en) | 1998-08-04 | 2000-02-25 | Toppan Printing Co Ltd | Color filter for liquid crystal display device and its manufacture |
US6221543B1 (en) * | 1999-05-14 | 2001-04-24 | 3M Innovatives Properties | Process for making active substrates for color displays |
-
2001
- 2001-09-28 KR KR1020010060618A patent/KR100764591B1/en active IP Right Grant
-
2002
- 2002-09-26 US US10/254,767 patent/US20030062532A1/en not_active Abandoned
-
2003
- 2003-08-14 US US10/640,372 patent/US6924917B2/en not_active Expired - Lifetime
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20160146985A1 (en) * | 2014-11-25 | 2016-05-26 | Boe Technology Group Co., Ltd. | Color filter substrate and manufacturing method thereof, display panel |
US20160238766A1 (en) * | 2015-02-13 | 2016-08-18 | Shanghai Tianma Micro-electronics Co., Ltd. | Polarizer and fabrication method thereof, display panel, and display device |
US10295715B2 (en) * | 2015-02-13 | 2019-05-21 | Shanghai Tianma Micro-electronics Co., Ltd. | Polarizer and fabrication method thereof, display panel, and display device |
GB2563278B (en) * | 2017-06-09 | 2022-10-26 | Univ Southampton | Optoelectronic device and method of manufacturing thereof |
Also Published As
Publication number | Publication date |
---|---|
KR100764591B1 (en) | 2007-10-08 |
KR20030026736A (en) | 2003-04-03 |
US20040046177A1 (en) | 2004-03-11 |
US6924917B2 (en) | 2005-08-02 |
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