CN101276085B - Polarizer sheet and its manufacturing method as well as liquid crystal display panel - Google Patents
Polarizer sheet and its manufacturing method as well as liquid crystal display panel Download PDFInfo
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- CN101276085B CN101276085B CN200710093635A CN200710093635A CN101276085B CN 101276085 B CN101276085 B CN 101276085B CN 200710093635 A CN200710093635 A CN 200710093635A CN 200710093635 A CN200710093635 A CN 200710093635A CN 101276085 B CN101276085 B CN 101276085B
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- liquid crystal
- polaroid
- alignment layers
- compensation layer
- polarizing film
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Abstract
The present invention provides a polarizer having phase compensation function at the same time, including a protecting film, a polarizing film formed on the protecting film, an alignment layer formed on the polarizing film, and a liquid crystal compensation layer formed on the alignment layer.
Description
Technical field
The invention relates to a kind of blooming piece, be meant a kind of display panels that is used for especially, and have the polaroid and the method for making thereof of phase compensation (phase compensation) function.
Background technology
Display panels is by the liquid crystal cells that can utilize electric field transform optics through characteristic (liquidcrystal cell), cooperates the polaroid that filters light with deflection polarity, to reach the purpose that optics switches (opticalswitching).
Yet, no matter be the liquid crystal material that itself promptly has optical anisotropy (optically anisotropic), or utilize external force change structure and and add material to produce optically anisotropic polaroid, the capital is because of the refractive index directivity that presents out of the ordinary, and the display quality that causes display panels to be presented on different visual angles (view angle) direction is inconsistent.
Generally speaking; in order to improve the problem of above-mentioned display quality; usually can add the above phase compensation film (phase compensator) of a slice in display panels; with the refractive index directivity of utilizing phase compensation film to be had; the reverse refractive index directivity of compensation liquid crystal cells and polaroid is borrowed and is improved the display quality of display panels.
In addition, because the slimming trend of display panels forces the relevant spare part of display panels also need cooperate thinning; And, because of the process-compatible height of phase compensation film and polaroid, phase compensation film is integrated in the polaroid to reach the thinking of thinning requirement so have.
Polaroid comprised the made light polarizing film of a polyvinyl alcohol (PVA) (PVA) material in the past, and two are located at tri acetyl cellulose (TAC) film of light polarizing film two opposite sides with the protection light polarizing film respectively.Phase compensation film then had two kinds of common patterns in the past, and wherein a kind of is that a specific clear sheet directly stretched (stretched) is handled, and makes the intermolecular formation anisotropy of sheet material (anisotropic) structure, to obtain phase compensation effect; Another kind then is to borrow a both alignment layers (orientation layer) regularly arranged (alignment) on a clear sheet liquid crystal material, to form a liquid crystal compensation layer with phase compensation effect.
In order to reach the requirement of thinning; phase compensation film is integrated in the practice of polaroid; be that phase compensation film is replaced a wherein TAC diaphragm of polaroid in the past; meaning is about to phase compensation film and combines with the polaroid semi-manufacture that only have a PVA light polarizing film and a TAC diaphragm; the function of polaroid with phase compensation not only is provided, and can successfully reduces the thickness of a slice TAC diaphragm.
Yet, under the continuous thinning trend of display panels, above-mentioned polaroid with the phase compensation function, it is required to satisfy display panels also need to carry out thinning constantly.
Because phase compensation value is with the thickness of phase compensation layer and to constitute the birefraction (birefringence) of material of phase compensation layer relevant, represents with following relational expression:
R=Δ n * b, wherein, R is a phase compensation value; Δ n is the birefraction of material; B is a thickness.
Wherein a kind of phase compensation film that makes with liquid crystal material that prior art disclosed, be because of liquid crystal material itself has higher birefraction, so the liquid crystal compensation layer that liquid crystal material constitutes can be reached the required phase compensation effect of display panels by thin thickness.
Yet, be difficult to the degree that monomer (free standing) mode is preserved or operated because the thickness of this kind liquid crystal compensation layer has been as thin as, so still needed with a clear sheet with suitable thickness as supporting in the past so that preserve or operation.Make jointly and integrate polaroid, structurally can't exempt described in order to support the clear sheet of liquid crystal compensation layer with this kind phase compensation film.
Summary of the invention
Purpose of the present invention is for a kind of low thickness polaroid being provided, being characterised in that wherein employed high birefringence rate liquid crystal compensation layer, is to be integrated into polaroid with the state that tool not supports with clear sheet.In particular, low thickness polaroid provided by the present invention supported sheet material because lacked layer of transparent more in the past, so can effectively lower the thickness of polaroid.
In order to achieve the above object, the present invention adopts a kind of commentaries on classics to paste technology, and the characteristic that tears off easily of utilizing release film to have provides liquid crystal compensation layer and both alignment layers one temporary support (temporary supporting) base material.Its processing procedure is earlier both alignment layers and liquid crystal compensation layer to be formed on the described temporary support base material in regular turn; Again liquid crystal compensation layer and both alignment layers are separated on release film integratedly and intactly, and commentaries on classics is labelled on the polaroid semi-manufacture with a PVA light polarizing film and a TAC diaphragm.
By utilizing the temporary support base material of a release film as liquid crystal compensation layer and both alignment layers; make both alignment layers and liquid crystal compensation layer formed thereon in regular turn; the characteristic of utilizing liquid crystal compensation layer and both alignment layers intactly on release film, to separate again; liquid crystal compensation layer and both alignment layers commentaries on classics are labelled on the polaroid semi-manufacture with a light polarizing film and a diaphragm; can save in order to support the clear sheet of liquid crystal compensation layer; to form one and compared the thinner polaroid that has phase compensation effect concurrently of thickness in the past, reach effect of the present invention really.
Description of drawings
Fig. 1 is the synoptic diagram of polaroid of the present invention;
Fig. 2 is that the present invention is used in the synoptic diagram of in advance making a both alignment layers and a liquid crystal compensation layer on the release film;
Fig. 3 is the synoptic diagram that liquid crystal compensation layer and both alignment layers and polaroid semi-manufacture is integrated into polaroid of the present invention;
Fig. 4 is the synoptic diagram that polaroid of the present invention is used in display panels; And
Fig. 5 is another synoptic diagram that polaroid of the present invention is used in display panels.
Embodiment
Figure 1 shows that the prepared polaroid 10 of the method according to this invention; wherein include: a diaphragm 11, is formed at light polarizing film 12, on the diaphragm 11 and is formed at a both alignment layers 13 on the light polarizing film 12 and a liquid crystal compensation layer 14 that is formed on the both alignment layers 13.
Light polarizing film 12 is with the stretching of PVA material sheet through a specific direction, and imposes and dye iodine (I
2Dying) PROCESS FOR TREATMENT makes it have the function of filtering light with deflection polarity.
The main material of both alignment layers 13 is polyvinyl alcohol (PVA) (PVA), and its upper surface is formed with most and utilizes friction (rubbing) to form the recess that extends along same specific direction.Because both alignment layers 13 of the present invention mainly is all the PVA material with light polarizing film 12 and constitutes, and has the preferable effect that is easy to combination of affinity between the two.
Liquid crystal compensation layer 14 is by comprising liquid crystal molecule, light initiator, and the liquid crystal material of levelling agent etc. constitutes.Wherein, liquid crystal molecule is borrowed the formed recess of both alignment layers 13 upper surfaces, and is regularly arranged along the specific direction that recess extends.Wherein, be applicable to that liquid crystal molecule of the present invention is bar-shaped (rod-like) liquid crystal molecule, its molecular structural formula can adopt molecular structure commonly used in the correlative technology field.
In addition, among the present invention as the release film of the temporary support base material of liquid crystal compensation layer 14 and both alignment layers 13, it is the thin plate that a upper surface is coated with mould release, be with polyethylene terephthalate (PET), or the pliability plastic material of other kinds makes, and mould release then can adopt mould release commonly used in the correlative technology field.
Below will be described in more detail with regard to the example of the invention described above:
As shown in Figure 2, provide a release film 15, include polyvinyl alcohol (PVA) (PVA), solvent, interfacial agent with one, and the solution of crosslinking chemical etc., coat on the release film 15 to form a coating.
Then, coating is imposed baking it is solidified, the pair of rollers coating upper surface that has many fine hair with an outside surface carries out friction treatment again, and it is many small and along the channel form recess that same specific direction extends that it is formed, and promptly finishes the making of both alignment layers 13.
Then, will include rod shaped liquid crystal molecule, solvent, light initiator, and the liquid liquid crystal material of levelling agent (biaxial C), coat on the both alignment layers 13, utilize the channel form recess that is formed at both alignment layers 13 surfaces, the rod shaped liquid crystal molecule regularization is arranged; The process heating makes solvent evaporates wherein, and liquid crystal material is imposed linear polarized uv (polarized UV) irradiation, makes the reaction of light initiator produce free radical and carry out crosslinked action, treats the liquid crystal material film-forming, promptly finishes the making of liquid crystal compensation layer 14.
Then; as shown in Figure 3; liquid crystal compensation layer 14 and both alignment layers 13 are torn off from release film 15 integratedly; and face mode on the light polarizing film 12 with both alignment layers 13; liquid crystal compensation layer 14 and both alignment layers 13 changeed being labelled to one and only having on the polaroid semi-manufacture of a light polarizing film 12 and a diaphragm 11, promptly finish the making of polaroid of the present invention.
The mode of utilizing the polaroid that has the phase compensation function concurrently of the present invention the to prepare display panels dual mode at least of can giving an example as described later.
Figure 4 shows that a kind of display panels that uses polaroid of the present invention to be made into, wherein, polaroid 10 of the present invention is to be attached on the liquid crystal cells 20 with its liquid crystal compensation layer 14 sides.Liquid crystal cells 20 comprises two parallel interval settings and is filled with liquid crystal material in transparency carrier wherein.Liquid crystal cells 20 opposite sides then are pasted with polaroid 30 in the past.
Figure 5 shows that the another kind of display panels that uses polaroid of the present invention to be made into, wherein, two polaroids 10 of the present invention are attached at opposite two sides of liquid crystal cells 20 respectively with its liquid crystal compensation layer 14 sides.Liquid crystal cells 20 comprises two parallel interval settings and is filled with liquid crystal material in transparency carrier wherein.
Conclude above-mentioned; by utilizing the temporary support base material of a release film as liquid crystal compensation layer and both alignment layers; make both alignment layers and liquid crystal compensation layer formed thereon in regular turn; the characteristic of utilizing liquid crystal compensation layer and both alignment layers intactly on release film, to separate again; liquid crystal compensation layer and both alignment layers commentaries on classics are labelled on the polaroid semi-manufacture with a light polarizing film and a diaphragm; can save in order to support the clear sheet of liquid crystal compensation layer; to form one and compared the thinner polaroid that has phase compensation effect concurrently of thickness in the past, reach effect of the present invention really.
Claims (8)
1. polaroid with the phase compensation function, it comprises a diaphragm, and is formed at light polarizing film, on the described diaphragm and is formed at both alignment layers on the described light polarizing film; And a liquid crystal compensation layer that is formed on the described both alignment layers, it is characterized in that: described liquid crystal compensation layer is to be integrated into polaroid with the state that tool not supports with clear sheet, and described light polarizing film and described both alignment layers mainly are all the PVA material and constitute.
2. according to the described polaroid of claim 1, it is characterized in that: described both alignment layers and liquid crystal compensation layer were supported by a temporary support base material before being integrated into polaroid.
3. according to the described polaroid of claim 2, it is characterized in that: described temporary support base material is a release film.
4. according to the described polaroid of claim 1, it is characterized in that: described liquid crystal compensation layer comprises rod shaped liquid crystal molecule.
5. method for making with the polaroid of phase compensation function is characterized in that:
(A) provide a temporary support base material;
(B) both alignment layers and a liquid crystal compensation layer are formed on the described temporary support base material in regular turn; And
(C) described liquid crystal compensation layer and both alignment layers are separated on described temporary support base material integratedly, and change and to be affixed on one and to have on the polaroid semi-manufacture of a light polarizing film and a diaphragm; Wherein, make described both alignment layers face described light polarizing film;
Wherein, described light polarizing film and described both alignment layers mainly are all the PVA material and constitute.
6. according to the method for making of the described polaroid of claim 5, it is characterized in that: described temporary support base material is a release film.
7. according to the method for making of the described polaroid of claim 5, it is characterized in that: described liquid crystal compensation layer comprises rod shaped liquid crystal molecule.
8. display panels, it comprises a liquid crystal cells, it is characterized in that:
Described display panels more comprises at least as any described polaroid in the claim 1 to 4; Wherein, described polaroid is to be attached on the described liquid crystal cells with its liquid crystal compensation layer side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710093635A CN101276085B (en) | 2007-03-28 | 2007-03-28 | Polarizer sheet and its manufacturing method as well as liquid crystal display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710093635A CN101276085B (en) | 2007-03-28 | 2007-03-28 | Polarizer sheet and its manufacturing method as well as liquid crystal display panel |
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| Publication Number | Publication Date |
|---|---|
| CN101276085A CN101276085A (en) | 2008-10-01 |
| CN101276085B true CN101276085B (en) | 2010-05-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200710093635A Expired - Fee Related CN101276085B (en) | 2007-03-28 | 2007-03-28 | Polarizer sheet and its manufacturing method as well as liquid crystal display panel |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103154776B (en) * | 2010-10-08 | 2015-08-05 | 富士胶片株式会社 | Blooming, its manufacture method, polaroid and image display |
| CN113183377A (en) * | 2021-05-14 | 2021-07-30 | 浙江凯信光电科技有限公司 | Liquid crystal high polymer coating transfer process based on optical lens or polarizing film |
| CN114509842A (en) * | 2022-03-07 | 2022-05-17 | Tcl华星光电技术有限公司 | Polaroid and display device |
| CN114660853A (en) * | 2022-03-07 | 2022-06-24 | Tcl华星光电技术有限公司 | Display device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6680767B2 (en) * | 2001-04-06 | 2004-01-20 | Central Research Laboratories Limited | Method of forming a liquid crystal polymer layer without support substrate |
| CN1668946A (en) * | 2002-09-24 | 2005-09-14 | 新日本石油株式会社 | Liquid crystal film and elliptical polarizing plate production method |
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2007
- 2007-03-28 CN CN200710093635A patent/CN101276085B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6680767B2 (en) * | 2001-04-06 | 2004-01-20 | Central Research Laboratories Limited | Method of forming a liquid crystal polymer layer without support substrate |
| CN1668946A (en) * | 2002-09-24 | 2005-09-14 | 新日本石油株式会社 | Liquid crystal film and elliptical polarizing plate production method |
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| Publication number | Publication date |
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| CN101276085A (en) | 2008-10-01 |
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