WO2004055583A1 - Systeme d'affichage eclaire par l'avant - Google Patents

Systeme d'affichage eclaire par l'avant Download PDF

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Publication number
WO2004055583A1
WO2004055583A1 PCT/CN2002/000895 CN0200895W WO2004055583A1 WO 2004055583 A1 WO2004055583 A1 WO 2004055583A1 CN 0200895 W CN0200895 W CN 0200895W WO 2004055583 A1 WO2004055583 A1 WO 2004055583A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
optical
optical substrate
display
substrate
Prior art date
Application number
PCT/CN2002/000895
Other languages
English (en)
Chinese (zh)
Inventor
Yijun He
Original Assignee
Quanta Display Inc.
Quanta Display Japan Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Quanta Display Inc., Quanta Display Japan Inc. filed Critical Quanta Display Inc.
Priority to AU2002349563A priority Critical patent/AU2002349563A1/en
Priority to PCT/CN2002/000895 priority patent/WO2004055583A1/fr
Publication of WO2004055583A1 publication Critical patent/WO2004055583A1/fr

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0031—Reflecting element, sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0038—Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0045—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide
    • G02B6/0046—Tapered light guide, e.g. wedge-shaped light guide
    • G02B6/0048—Tapered light guide, e.g. wedge-shaped light guide with stepwise taper
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0058—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide
    • G02B6/0061—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide to provide homogeneous light output intensity
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
    • G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
    • G02B6/007—Incandescent lamp or gas discharge lamp
    • G02B6/0071—Incandescent lamp or gas discharge lamp with elongated shape, e.g. tube
    • 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
    • G02F1/1336—Illuminating devices
    • G02F1/133616—Front illuminating devices

Definitions

  • the invention relates to a simple, quick and effective structure, which is a structure suitable for the optical mechanism of a front light module.
  • the unique design on the optical substrate can be used to solve the most popular applications in the optoelectronic industry, such as liquid crystal displays. Make the image quality and brightness uniform, effectively use the light from the light source, and expand the viewing angle.
  • FIG. 1A is an enlarged view of a known optical substrate design of a front optical module, which is from a side portion to a middle portion, and gradually becomes thinner from thicker, and the thickness is gradually decreased toward the middle portion in a stepwise manner.
  • the pitch of one stage is about 20 to 30 micrometers ( ⁇ ), and the height of each stage drop is about 5 to 10 micrometers (m);
  • Figure 1B shows the optical substrate of a known front optical module.
  • the schematic diagram shows that the optical mechanism of the entire front light module has a thickness of about 5 to 6 inches.
  • Reflective liquid crystal displays and mini-type information electronics products mainly explain the implementation of thin and lightweight reflective liquid crystal displays.
  • Reflective liquid crystal displays are Between the glass substrates facing each other, there are a polarizing plate, a retardation plate, a diffusion plate, a color film, a transparent electrode, and a liquid crystal layer, which are sequentially arranged, and there is uneven unevenness on the glass substrate near the end of the viewer.
  • the front light includes a substrate near the user, and a light source disposed near the substrate of the user.
  • Japanese Patent Publication No. 00017/1990 published on January 5, 1990 and Japanese Patent Publication No. 84618/1990 disclosed on March 26, 1990 describe a planar light source unit including a light pipe (light Guide pope) is the first element, which has a light incident surface, a light emitting surface, the light emitting surface is orthogonal to the light incident surface, and a reflecting surface is directly opposite the light emitting surface, and a A light extraction mechanism is formed.
  • the light extraction mechanism is also called a light extractor.
  • the light source is located at the opposite end of the light pipe.
  • control sheet is a second element, and has a prism array, the prism array is arranged adjacent to the emission surface of the light pipe, and has a prism of triangle, and arranged so that the top end of the prism faces the light pipe to emit light Surface, the generating line formed by any of the prisms that make up the light pipe, is arranged almost parallel to the light source, and a reflecting sheet, or reflecting surface, is arranged adjacent to the light Light-reflecting surface of a catheter; a reference disclosed on March 26, 1990, Japanese Patent Publication No.
  • Known structures usually have the following four disadvantages: first, insufficient indoor brightness, second, limited viewing angle, third, insufficient brightness of the light emitting surface, and fourth, a single lamp.
  • the inventor of the present case proposes a simple, fast and effective structure, which is a structure suitable for the optical mechanism of a front light module.
  • the unique design on the optical substrate can solve the current production of the most popular optoelectronic industry.
  • the present invention proposes a simple, fast and effective structure, which is a structure suitable for the optical mechanism of a front light module.
  • a simple, fast and effective structure which is a structure suitable for the optical mechanism of a front light module.
  • the main purpose is to make the image quality and brightness uniform, effectively use the light from the light source and expand the viewing angle:
  • the present invention uses a ridge structure designed on the optical substrate to promote the light leaving from the optical substrate to deviate from the direction originally performed in the optical substrate, and has a larger diffusion range for improving The size of the perspective
  • the present invention uses a valley structure designed on the optical substrate to promote the light emitted by the light source on one side of the optical substrate to enter the interior of the optical substrate, and to meet the surface of the valley to perform the internal full-scale operation. Reflection (internal total reflection), which reflects the light down to the reflector, and can improve the uniformity of the light emitted from the display;
  • the present invention can effectively utilize the light emitted by the light source, and does not add too much volume and weight to the display.
  • FIG. 1A is an enlarged view of an optical substrate design of a known front light module.
  • FIG. 1B is a schematic diagram of an optical substrate of a known front light module.
  • Fig. 2 is an enlarged explanatory diagram of the structure of the first embodiment of the front optical module optical mechanism according to the present invention.
  • Fig. 3 is a structural explanatory diagram of a second embodiment of the structure of the optical mechanism of the front optical module of the present invention.
  • Fig. 4 is an enlarged structural explanatory view of a second embodiment of the structure of the optical mechanism of the front optical module of the present invention.
  • FIG. 5 is a structural explanatory diagram of a front optical module optical mechanism according to a second embodiment of the present invention.
  • FIG. 6 is an explanatory diagram of a light emitting principle of an optical mechanism of a front optical module according to a second embodiment of the present invention.
  • FIG. 7 is an external view of an optical mechanism of a front optical module according to a second embodiment of the present invention.
  • FIG. 2 is an enlarged explanatory diagram of the structure of the first embodiment of the front optical module optical mechanism according to the present invention
  • the structure of the front optical module optical mechanism according to the first embodiment of the present invention is mainly composed of the following components: a display (not shown in the figure) 2), the display is composed of multiple pixels
  • An optical substrate 1 having two major opposing surfaces, wherein one surface 12 is smooth, and Adjacent to the front major surface of the display; a reflector 3, the reflector 3 is disposed adjacent to the back major surface of the display; a light source 51, the light source 51 is used to direct light 7
  • the optical substrate 1 is introduced, in which the light 7 enters the optical substrate 1 from one side of the optical substrate 1, and because it encounters the surface of the valley portion 141a, it reflects downward due to internal total reflection and becomes light. 71.
  • the light passes through the optical substrate 1, and then passes through the display, and is reflected by the reflector 3.
  • the light passes through the display, enters the optical substrate 1, and then leaves the
  • the present invention is characterized in that the other surface 14 of the optical substrate 1 has a plurality of parallel valley portions 141a, 141b, 141c, 141d, 141e, 141f and ridge portions 143a, 143b. 143c, 145a. 145b, 145c, 145d and 145e, where the valley portion 141a and the valley portion 141b have a certain distance, as shown in FIG. 2, the valley portion 141b and the valley portion 141b
  • the 141c has a certain pitch, such as the pitch P2 shown in FIG. 2, and so on.
  • the light 9 emitted from the light source 51 on one side of the optical substrate 1 enters the interior of the optical substrate 1, and encounters the valley 141a.
  • the surfaces of 141b and 141c perform internal total reflection, so that light 7, respectively, becomes light 71, 73, 75 in turn, and the reflection reaches the reflector 3, which can improve the uniformity of the light emitted from the display, and then leave the optical base.
  • the light 71 of the sheet 1 will pass through the ridge 145b of the optical substrate 1 and deviate from the direction originally performed in the optical substrate 1 to generate a larger diffusion range and deviate from the direction originally performed in the optical substrate 1.
  • the size of the perspective is a certain pitch, such as the pitch P2 shown in FIG. 2, and so on.
  • the ridge 143a in the optical substrate 1 is composed of a first surface 143al of a multi-fold surface and a second surface 143a2 of a multi-fold surface, and the adjacent ridges 143a, 143b, and 143c constitute a ridge group (ridge group) 143, and the ridge groups 143 and 145, such as the ridge groups 143 and 145, may be occupied by one valley 141a, or Is occupied by a third surface 149 which is parallel to the smooth surface 12 of the optical substrate 1.
  • the ridge 143a has two opposing surfaces, a first surface 143al of a poly-curved surface and a second surface 143a2 of a multi-curved surface, provided to leave the optical substrate 1
  • the light rays are separated from the direction originally performed in the optical substrate 1, and have a larger diffusion range, which is used to increase the viewing angle.
  • the valley portion 141a is a wedge-shaped surface, it is composed of a fourth surface 141al, a fifth surface 141a2, and a sixth surface 141a3.
  • One side of the sheet 1, ⁇ The light 7 entering the optical substrate 1 is internally totally reflected, so that the light 7 is reflected downward to become the light 71, reaching the reflector 3, and the fifth surface 141a2 faces from the other side of the optical substrate 1.
  • the light entering the optical substrate 1 (not shown in FIG.
  • the valleys 141a, 141b, 141c, 141d, 141e, 141f From the two sides to the middle, increase its longitudinal depth one by one; the reason for this design is that the light is emitted from both sides to the middle.
  • the surface is reflected when the internal total reflection is performed. The energy of the light can be equal to the valleys 141a and 141f on both sides. When the surface is totally internally reflected, the energy of the reflected light is uniform. Therefore, the valleys 141c and 141d in the middle are designed to have a depth greater than that on both sides.
  • the valleys 141a and 141f are long in depth so as to intercept the valleys 141a and 141f on both sides.
  • the surfaces of the valleys 141a and 141f are not intercepted by the light source 51 or 53 to the middle of the optical substrate 1, and the energy of the emitted light is further increased.
  • the sixth surface 141a3 is parallel to the surface 12, which is mainly for facilitating the adjustment of the gap size, and also for the convenience of manufacturing and processing.
  • the light source 51 on, in terms of position 53, may be provided on both sides of the optical substrate, the light source 511 comprises at least one light fixture (light tube) 511 and a reflector screen (reflective chimney) 513 0 and the light source 53 includes at least one light-emitting tube 531 and a reflector lamp cover 533.
  • the light tube 511 represents the light source 51
  • one light-emitting tube 531 represents the light source 53, but it is not limited to using a single light-emitting tube 511, 513. Multiple light-emitting tubes 511, 513 are still feasible in the first embodiment of the present invention.
  • the valley portion 141a and the valley portion 141b shown in FIG. 2 have a certain distance P1, and the valley portion
  • the first embodiment of the present invention has a pitch of 50 to 70 micrometers (m).
  • Fig. 3 is a structural explanatory diagram of a second embodiment of the structure of the optical mechanism of the front optical module of the present invention.
  • Fig. 4 is an enlarged structural explanatory view of a second embodiment of the structure of the optical mechanism of the front optical module of the present invention.
  • the second embodiment of the structure of the front optical module optical mechanism of the present invention is mainly composed of the following components:
  • a display (not shown in FIGS. 3 and 4), the display is composed of a plurality of pixels, and the pixels have a front and back major surface; an optical substrate 1, an optical substrate 1 It has two main opposing surfaces, one of which is a surface 12 which is smooth and abuts the main surface of the front end of the display; a reflector 3, which is disposed at a position adjacent to the main surface of the back end of the display; a light source 51, which is used by the light source 51
  • the light 7 is introduced into the optical substrate 1, where the light 7 enters the optical substrate 1 from one side of the optical substrate 1, and because it encounters the surface of the valley portion 141a, it reflects downward and reflects due to internal total reflection, and becomes
  • the light 71 passes through the optical substrate 1 and then passes through the display and is reflected by the reflector 3, returns to the display, enters the optical substrate 1, and then leaves the optical substrate 1.
  • the optical substrate 1 enhances the brightness of the display.
  • the present invention is characterized in that: the other surface 14 of the optical substrate 1 has a plurality of parallel valley portions 141a, 141b, 141c, 141d, 141e, 141f and ridge portions 143a, 143b, 143c, 145a, 145b, 145c, 145d and 145e, where the valley portion 141a and the valley portion 141b have a certain distance, as shown in FIG. 3, the valley portion 141b and the valley portion
  • the 141c has a certain pitch, as shown in the pitch P2 shown in FIG. 3, and so on.
  • the light 9 emitted from the light source 51 on one side of the optical substrate 1 enters the inside of the optical substrate 1.
  • the surface of the valleys 141a, 141b, and 141c, and internal total reflection is performed, so that the light 7 becomes the light 71, 73, and 75, respectively, and the reflection is downward to reach the reflector 3, which can enhance the light emitted from the display.
  • Uniformity, and then, the light 71 leaving the optical substrate 1 will pass through the ridge 145b of the optical substrate 1 and deviate from the direction originally performed in the optical substrate 1 to generate a larger diffusion range and deviate from the optical substrate 1.
  • the direction of the film 1 increases the size of the viewing angle.
  • the ridge 143a in the optical substrate 1 is composed of a first surface 143al and a second surface 143a2, and the adjacent ridges 143a, 143b, and 143c form a ridge group 143, and the ridge groups 143 and 145
  • the ridge groups 143 and 145 may be occupied by a valley 141a or a third surface 149, and the third surface 149 is a smooth surface 12 parallel to the optical substrate 1.
  • the ridge 143a has two opposite surfaces, a first surface 143al and a second surface 143a2, respectively, it is to provide the light leaving the optical substrate 1 and separate from the original optical substrate. 1 with the larger diffusion range, which is used to increase the viewing angle.
  • the valley portion 141a is composed of a fourth surface Mlal and a fifth surface 141a2, the fourth surface 141a1 enters the optical substrate 1 from one side of the optical substrate 1.
  • the light beam 7 is totally internally reflected, so that the light beam 7 is reflected downward into the light beam 71 and reaches the reflector 3.
  • the fifth surface 141a2 is a light beam entering the optical substrate 1 from the other side of the optical substrate 1 (not shown in the figure).
  • the light is reflected downward to the reflector 3; since the valleys 141a, 141b, 141c, 141d, 141e, 141f are gradually increased from both sides to the middle, Its longitudinal depth; the reason for this design is that the light is emitted from both sides to the middle.
  • the energy of the reflected light can be The valley portions 141a and 141f of the inner portion have uniform energy of the reflected light when the surface is totally internally reflected. Therefore, the valley portions 141c and 141d of the middle portion are designed to have a depth greater than that of the valley portions 141a and 141f on both sides.
  • the light sources 51 and 53 may be disposed on both sides of the optical substrate 1.
  • the light source 51 includes at least one light emitting tube 511 and a reflection lamp cover 513
  • the light source 53 includes at least one light emitting tube. 531 and a reflective lampshade 533.
  • the second embodiment of the present invention uses a light-emitting tube 511 as the light source 51 and a light-emitting tube 531 as the light source 53, it is not limited to using a single light-emitting tube 511, 513.
  • the plurality of light emitting tubes 511 and 513 are still feasible in the second embodiment of the present invention.
  • the valley portion 141a and the valley portion 141b shown in Figs. 3 and 4 have a certain distance.
  • the valley portion 141b and the valley portion 141c have a certain pitch P2, and so on.
  • the pitch is between 50 and 70 microns ( ⁇ m).
  • FIG. 5 is a structural explanatory diagram of a front optical module optical mechanism according to a second embodiment of the present invention
  • the structure of the valley portion 141a is symmetrical to the middle portion of the front optical module optical mechanism
  • the valley portions 141a, 141b, 141c, Hid, 141e, 141f Is from the two sides to the middle, and gradually increase its longitudinal depth.
  • the reason for this design is that the light is emitted from both sides to the middle.
  • the valleys 141c and 141d at the middle In order for the valleys 141c and 141d at the middle to be internally totally reflected, the energy of the reflected light can be compared with the valleys on both sides.
  • the valleys 141c and 141d in the middle part are designed to have a depth greater than the depths of the valleys 141a and 141f on both sides so as to intercept both sides
  • the valley portions 141a and 141f of the part are not intercepted by the surface, and the energy of the emitted light is transmitted from the light source 51 or 53 to the middle of the optical substrate 1, and then is reflected downward.
  • FIG. 6 is an explanatory diagram of a light emitting principle of an optical mechanism of a front optical module according to a second embodiment of the present invention.
  • a light source 51 is used to introduce light 7 into the optical substrate 1, where the light 7 enters the optical substrate 1 from one side of the optical substrate 1, and because it encounters the surface of the valley 141a, it is totally reflected internally. Reflected downward, it becomes light 71, passes through the optical substrate 1, and then passes through the display, and is reflected by the reflector 3, and returns to the display and enters the optical substrate 1.
  • a part of the reflected light 71 passes through the optical Spine of substrate 1 After 143a, detachment from the direction originally performed in the optical substrate 1 produces a larger diffusion range, detachment from the direction originally performed in the optical substrate 1, and increases the size of the viewing angle.
  • FIG. 7 is an external view of an optical mechanism of a front optical module according to a second embodiment of the present invention.
  • the valley and ridges of the optical substrate can be seen from FIG. 7, which are symmetrical to the middle portion of the optical mechanism of the front optical module and are oriented from both sides. Symmetrically arranged in the middle.
  • the simple, fast and effective structure proposed by the present invention is a structure suitable for the optical mechanism of a front light module.
  • Using the unique design on the optical substrate it can solve the applications currently produced by the most popular optoelectronic industry, such as liquid crystal displays. Its image quality and brightness are uniform, effectively using the light from the light source and expanding the viewing angle.

Abstract

L'invention concerne une structure optique d'un module éclairé par l'avant comprenant un afficheur, une feuille optique, un réflecteur et une source lumineuse. L'invention se caractérise en ce qu'une pluralité d'arêtes parallèles situées sur l'une des surfaces de la feuille optique permettent de réfléchir un rayon lumineux vers le bas dans l'afficheur. Cela permet d'améliorer l'efficacité de la source lumineuse et la régularité du rayon lumineux, et d'augmenter l'angle de visualisation de l'afficheur.
PCT/CN2002/000895 2002-12-17 2002-12-17 Systeme d'affichage eclaire par l'avant WO2004055583A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2002349563A AU2002349563A1 (en) 2002-12-17 2002-12-17 Front-lit display system
PCT/CN2002/000895 WO2004055583A1 (fr) 2002-12-17 2002-12-17 Systeme d'affichage eclaire par l'avant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2002/000895 WO2004055583A1 (fr) 2002-12-17 2002-12-17 Systeme d'affichage eclaire par l'avant

Publications (1)

Publication Number Publication Date
WO2004055583A1 true WO2004055583A1 (fr) 2004-07-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2002/000895 WO2004055583A1 (fr) 2002-12-17 2002-12-17 Systeme d'affichage eclaire par l'avant

Country Status (2)

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AU (1) AU2002349563A1 (fr)
WO (1) WO2004055583A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5394255A (en) * 1992-01-27 1995-02-28 Sekisui Kagaku Kogyo Kabushiki Kaisha Liquid crystal display using a plurality of light adjusting sheets angled at 5 degrees or more
US5608550A (en) * 1994-06-24 1997-03-04 Minnesota Mining And Manufacturing Company Front-lit liquid crystal display having brightness enhancing film with microridges which directs light through the display to a reflector
CN1327166A (zh) * 2000-06-07 2001-12-19 三星电子株式会社 液晶显示器中的照明方法、背光组件及液晶显示器

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5394255A (en) * 1992-01-27 1995-02-28 Sekisui Kagaku Kogyo Kabushiki Kaisha Liquid crystal display using a plurality of light adjusting sheets angled at 5 degrees or more
US5608550A (en) * 1994-06-24 1997-03-04 Minnesota Mining And Manufacturing Company Front-lit liquid crystal display having brightness enhancing film with microridges which directs light through the display to a reflector
CN1327166A (zh) * 2000-06-07 2001-12-19 三星电子株式会社 液晶显示器中的照明方法、背光组件及液晶显示器

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AU2002349563A1 (en) 2004-07-09

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