TWI282476B - Liquid crystal display device - Google Patents

Abstract

The present invention relates to a liquid crystal display device. Which comprises the first transparent substrate and the second transparent substrate, a liquid crystal layer, a plurality of pixel electrodes, a common electrode, a color filter. The color filter includes a transparent substrate, a color layer and black matrixes covering with the transparent substrate, the color layer includes the first portion that correspond to the pixel electrode and the second portion, wherein the pixel electrodes are reflective electrode, and the first portion includes a plurality of apertures.

Description

!282476 V. INSTRUCTIONS (1) [Technical field to which the invention pertains] ^Inventives-------------------------------------------------------------------------------------------------------------------------------------------- Hurry [Prior Art] The liquid crystal in the liquid crystal display itself does not have the luminescent property, and the bean system adopts the lightning: r null = minute: i turns to realize the passage or non-pass of light, thereby achieving the purpose of display. In a conventional liquid crystal display, at the two poles, an electric field for controlling the twist of the liquid crystal molecules is formed: the electrodes are: m, and the electrodes of the two substrates are oppositely disposed to form an electric field perpendicular to the surface of the substrate. Since the liquid crystal molecules are electrically conductive, the orientation of the liquid crystal molecules will be perpendicular to the surface of the substrate under the control of the electric field. However, due to the interaction force between the liquid crystal molecules and the physical force such as gravity, the orientation of the liquid crystal molecules cannot be completely perpendicular to The surface of the substrate, and the tilt angles of the liquid crystal molecules are not the same, so that when the observer observes from different angles, different display effects will be observed, which is the viewing angle defect of the liquid crystal display. In-Plane Switching (IPS) type liquid crystal display has pixel electrodes and common electrodes on the same substrate and arranged at intervals. When a voltage is applied, the electric field in the liquid crystal display that controls the liquid crystal in the direction perpendicular to the substrate is changed. It becomes an electric field parallel to the direction of the substrate. Under the control of the electric field, the liquid crystal molecules only need to rotate in the horizontal plane to expand the viewing angle of the liquid crystal display. However, the in-plane switching liquid crystal display cannot be made due to the low spatial distribution of the electric field. The liquid crystal is sufficiently twisted to be sufficiently transparent. In order to increase the spatial distribution density of the electric field, it is necessary to increase the driving voltage or increase the electrode surface.

Page 5 1282476 V. Inventive description, so the on-off switching liquid crystal low 0 display aperture ratio and transmittance overcome the open aperture of the in-plane switching liquid crystal display and lower defects, a kind of fringe electric field a M® ΟΛ Electric poor switch type liquid crystal display. Please refer to

Axe L true 3 years U month 4th Announcement No. 6,642,985 US special = exposed: ί a fringe field switch type liquid crystal display, the edge electric field, off type liquid 0 day display is a penetrating liquid crystal display using a backlight device The liquid crystal display unit 20 includes two opposite transparent lower substrates 丨 and an upper substrate 11 , and a liquid crystal layer 20 is distributed between the lower base (four) and the upper base. The liquid crystal layer 20 is composed of a plurality of liquid crystal molecules. A is arranged in an order, a common electrode 2 is disposed on the lower substrate 1, a transparent insulating layer 3 covers the common electrode 2, a plurality of pixel electrodes 4 are disposed on the transparent insulating layer 3, and a lower alignment film 5 is disposed on The plurality of pixel electrodes 4 and the transparent insulating layer 3 are disposed on the inner side of a color wide substrate U. The color light-emitting sheet "includes the array 12 and the color layer 13, and the colored layer 13 has red (R), blue (6), The green (G) three coloring unit 'black matrix 12 is distributed between the three coloring units, and an indium tin oxide (ITO) layer 30 is disposed on the side of the color filter 12 near the liquid crystal layer. Wherein the indium tin oxide layer 3 〇 and the liquid crystal layer 2 还 are further provided with a matching Film 15.

When the voltage is applied to the liquid crystal display 10, an electric field is formed between the pixel electrode 4 and the common electrode 2. Since the pixel electrode 4 and the common electrode 2 are separated by a transparent insulating layer 3 having a small thickness, the electric field distribution is denser and relatively In the in-plane switching technology, the ineffective portion of the electric field is smaller, so the edge electric field switch type liquid crystal display has a higher aperture ratio and transmittance.

Page 6 1282476 V. Description of the invention (3) Device, usually wave: :::5: The main energy consumption of the tooth-permeable liquid crystal display The penetrating liquid: t crystal display power consumption is more than 5〇%, and the device The brightness and the device are placed in an environment with strong external light, and the display quality of the liquid crystal display is inevitably reduced. Therefore, the penetrating liquid crystal display-degree and contrast have a great influence on the exhibition environment, and the liquid crystal display is maintained. : The increase of Hui. "Because the power of the backlight device must be increased, and the power consumption of the backlight device must be monitored in μμ. It is necessary to use the energy-saving edge electric field switch type liquid crystal display. [Summary]

The edge electric field of the date of the month + Q is f = : f for energy saving and can guarantee good display quality = switch type semi-transparent transflective liquid crystal display. The liquid crystal display provided by the transparent substrate comprises: between the first transparent substrate and the second substrate: reset between the first transparent substrate and the second transparent substrate, wherein the pixel is located at the liquid crystal layer and the first transparent plate a common electrode between the pixel electrode and the first transparent beauty, located in the liquid crystal layer and the second transparent substrate: a layer and a 4 light-receiving sheet including a transparent substrate, a black matrix, and a The first layer of the color layer corresponds to the position of the emitter electrode; wherein the pixel electrode is a reverse, and the first portion of the color layer is provided with a plurality of small holes. a transparent substrate: S: 35, located between the first transparent substrate and the first substrate, and a plurality of pixel electrodes located in the liquid crystal layer and the first

Another type of liquid crystal display comprising: a second transparent substrate 1282476, a description of the invention (4) between a transparent substrate; a common electrode between the pixel electrode and the first transparent substrate; a color filter disposed between the liquid crystal layer and the second transparent substrate, the color filter comprising a transparent substrate, a black matrix, a colored layer, and a transparent protective layer, the colored layer comprising the first portion and the second portion In part, the first portion corresponds to a position of the pixel electrode; wherein the pixel electrode is a reflective electrode, and the second portion of the coloring unit is thicker by a thickness of two times. Further, the liquid crystal display provided by the present invention includes: first and second J-shaped substrates; a liquid crystal layer between the first transparent substrate and the first transparent earth plate; and a plurality of pixel electrodes located at The liquid crystal: between the transparent substrates; a common electrode between the pixel electrode and the second: moon substrate, a color filter located between the liquid crystal: base, the color light-emitting sheet includes a transparent a substrate, a black-light=color layer, and a transparent protective layer, the colored layer comprising a _th portion 盥=, the first portion corresponding to a pixel electrode position; wherein the image is: an extremely reflective electrode, and the second portion is The concentration of the electrochromic color is twice. The color of the knives is about the first part. The prior art is compared with the prior art. The pixel electrode of the edge electric field liquid crystal display of the present invention is made of a reflective metal or metal λ reflective film. Can be charged _ $ shots, a layer of electrode covering, to achieve the reflection function "= = external f light reflected back to the LCD word production, which is - penetrating; pole electricity = tin or indium oxide page 8 1282476 five, invention Description (5) 冋' due to back The light source light is worn once ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ The light needs to pass through the color of the jigsaw film twice, and the other part of the film is injured and the external μ ^ - Λβ >ν ^ ® - Γ In the color filter, a part of the color filter is set to be twice as small as the plural, or the thickness I of the second part is twice the thickness of the first part, so that the backlight device has the same color as the color of the first part. Saturated 9, the 出 ΚΙ ΚΙ ΚΙ ΚΙ ΚΙ 获得 获得 获得 获得 ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ Since the liquid crystal display passes through the four reflective pixel electrodes, the power of the backlight device can be reduced right: [Embodiment] The sheep can achieve the purpose of the instant. Poor 1: Luo: 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 第一 该 该The liquid crystal display, #includes two opposite first, the bright substrate 101 and the second transparent substrate 110, and a liquid crystal layer 12 are distributed between the second transparent substrate 1 〇1 and the second transparent substrate, the liquid crystal layer丨2 〇=plural liquid ^Molecular 120a is arranged in an orderly manner, and a transparent common electrode 1〇2 is disposed on the first transparent substrate substrate 1〇1, and the transparent common electrode 1〇2 can transmit light through the material thereof Indium tin oxide or indium zinc oxide (Indiuin Zinc Oxide ' I ZO), a transparent insulating layer 1 〇 3 covering the transparent common electrode 1 0 2 'plural pixel electrode 丨〇 4 is disposed on the transparent insulating layer 丨〇 3 The pixel electrode 104 can reflect external ambient light, and the material thereof is metal silver, metal aluminum or alloy material. The lower alignment film 丨〇 5 is disposed on the plurality of pixel electrodes 1 〇 4 and the transparent insulating layer 1 〇 3, a color The filter 11 4 is disposed on the inner side of the second transparent substrate 110, and is insulated. Shu 3〇 disposed on the color filter Shushu close to the liquid crystal layer 4 120-- side, wherein the insulating layer is further provided between the liquid crystal layer 30 Shu Shu 2〇

Page 9 1282476 -------- Upper alignment film 1 50. j j 2 The color filter 11 4 includes a transparent substrate 11 1 , a black matrix, a colored layer 113 and a transparent protective layer 116 . The transparent substrate ^1 is a carrier of the above element. The colored layer 11 3 has a red, blue, and green coloring unit. The three coloring units are arranged on the wave transmissive plate 111 to respectively pass the red, blue, and green primary colors to block other spaces. The light of ^ passes. The black matrix 11 2 is disposed between the three coloring units and functions to block the light passing between the three coloring units to prevent the light from leaking. The coloring material is mixed. The transparent protective layer 116 covers the black matrix. 1 1 3, for protecting the black matrix 丨丨 2 and the color layer are divided into color filters 1 1 4 each coloring unit according to its corresponding part of the electrode 俨ί part and the second part Β, wherein The first portion A of the pole Γ9 corresponding to the pixel electrode 1 〇4 corresponds to the common electric sub-U that is not opposite to the pixel electrode 104. The portion is the second portion B, wherein the first portion is provided with a plurality of numbers = 17 and the small holes 11 7 are non-colored portions, and the transparent protective layer 11 β is filled with the area of the colored portion of the first portion A and the small holes.丨丨7 is equal in area. ^ The pixel electrode 104 is made of non-transmissive metallic silver, metallic aluminum or alloy/which can act as a reflective electrode to reflect external light back to the liquid crystal layer. The common electrode 102 is transparent. Made of indium tin oxide or zinc oxide, which is a penetrating electrode, light emitted from a backlight device (not shown) penetrates the common electrode 102 and enters the liquid crystal layer 12 to realize a penetrating function, and thus the liquid crystal display 100 In the environment where the external light is strong or weak, the brightness and contrast are relatively high. Because the liquid crystal display 1 〇〇 can effectively use external light through the reflective pixel electrode 丨04, it can be correspondingly

1282476

The power of the backlight device is reduced to achieve the purpose of energy saving; when the external light enters, it penetrates the first portion A of the color filter 1 1 4 and passes through the pixel electrode 丨〇 ^ reflection 'passes through the first portion A again, and then exits, The backlight light passes through the common electrode 102, passes through the second portion b of the color filter 114, and exits, because the light passing through the color filter of the color filter 114 passes through the color tear film 11 One time of the optical path, since the first portion a is provided with a small hole 11 7 , the colored portion 11 3 of the first portion A has an area of one half of the area of the first portion a, so the color of the external light-transmitting portion 11 3 is always The amount of coloring is substantially equal to the total amount of color of the backlight passing through the colored portion 113, and all of the emitted light can obtain substantially the same color saturation; therefore, the liquid crystal display 丨〇〇 shows high luminance and contrast and all outgoing light The color saturation is about the same to ensure good display quality. Referring to the fourth drawing, the color filter structure of the second embodiment of the present invention is not intended. The color filter 11 4 also includes a transparent substrate 11 、 , a black matrix U 2 , a colored layer 113 , and a transparent protective layer 1J6 which is different from the color filter 114 in that: a part of each coloring unit f Β 'Thickness is the first part Α, the thickness is twice. When the liquid crystal display is displayed, the external light needs to pass through the first part twice, and the backlight light passes through the second part twice, so that all the emitted light penetrates the colored portion and the total amount of i is equal. , its color saturation is also consistent. ^5青二阅五图' is a color filter of the third embodiment of the present invention. The color filter 114, the second portion B, has a thickness equal to the thickness of the third portion A'', so that the color saturation of the emitted light is uniform, and the second part of the B, the concentration of the coloring is about the first part A. , the concentration of coloring

1282476 V. Invention description (8) times, and its structure is simpler. Please refer to the sixth drawing, which is a schematic structural view of a fourth embodiment of the liquid crystal display of the present invention. The liquid crystal display 2 is the same as the liquid crystal display 100, and is different from the liquid crystal display 1 in that the pixel electrode 2 〇4 includes an electrode layer 205 and a reflective film 206, and the reflective film 206 covers the electrode. Layer 2 0 5 on. When the liquid crystal display 2 is displayed, the pixel electrode 2 〇4 and the common electrode 202 together generate a dense fringe electric field, and the liquid crystal molecules 220a in the liquid crystal layer 220 are deflected, and the reflective film 206 reflects external light back to the liquid crystal layer. 2 2 0, continuous reflection function. Similarly, in the liquid crystal display 2 , , a plurality of small holes 2 17 are provided on the first portion A of the color filter 2 14 . Of course, the thickness of the second portion of the color filter and the light sheet 214 may be twice the thickness of the first portion, or the concentration of the second portion may be about twice the concentration of the first portion. As described above, the present invention has indeed met the requirements of the invention patent, and the patent application is only in accordance with the law. The above is only a preferred embodiment of the present invention, and the scope of the present invention is not in the above embodiment. To the extent that the equivalent modifications or variations made by those skilled in the art of the present invention in accordance with the spirit of the present invention are intended to be included in the scope of the following claims.

Page 12 1282476 BRIEF DESCRIPTION OF THE DRAWINGS The first figure is a schematic representation of a prior art penetrating edge electric field switching liquid crystal display. The second drawing is a schematic structural view of a first embodiment of the liquid crystal display of the present invention. The third figure is a schematic structural view of a color filter according to a first embodiment of the present invention. The fourth figure is a schematic structural view of a color filter according to a second embodiment of the present invention. The fifth figure is a schematic structural view of a color filter according to a third embodiment of the present invention. Figure 6 is a schematic view showing the structure of a fourth embodiment of the liquid crystal display of the present invention. [Description of component symbols] The liquid crystal display is not 100 ^ 200 The alignment film 105 The second transparent substrate 110 The common electrode 102 The first transparent substrate 101 The pixel electrode 104, 204 The transparent insulating layer 103 The liquid crystal layer 120 ^ 220 The liquid crystal molecules 120a, 2 2 0 a reflective film 206 black matrix 112 > 112, > 112 " insulating layer 130 transparent protective layer 116 > 1 16, small hole 117 ^ 217 transparent substrate 11 123, electrode layer 205 colored layer 113 > 113 ', 113 , 'Color filters 114, 114', 114' ' ^ 214

Page 13

Claims (1)

1282476 A liquid crystal display comprising: a first transparent substrate and a second transparent substrate; and a liquid crystal layer of one of the transparent substrates, the first transparent substrate and the plurality of pixel electrodes being located on the liquid crystal layer The first portion; wherein the pixel electrode is a reflective electrode, and the first portion is provided with a plurality of small holes. a common electrode, a color filter color filter and a transparent protection component, wherein the first pixel is located at the liquid crystal, and the liquid crystal comprises a transparent base layer, the colored portion and the pixel electrode and the first transparent layer The second transparent bottom, a black moment layer includes a first pole position corresponding; between the substrates; the array, the array, a colored layer and the second portion 2, as described in the patent application scope Wherein the pixel electrode material is metallic silver. The liquid crystal display of claim 1, wherein the pixel electrode material is a metal. The liquid crystal display of claim 1, wherein the pixel electrode material is an alloy material. The liquid crystal display according to claim 1, wherein the pixel electrode comprises an electrode layer and a reflective film, and the reflective film covers the electrode layer. The liquid crystal display according to claim 1, wherein a transparent insulating layer is disposed between the common electrode and the pixel electrode. Page 14 1282476 VI. Application for patent scope 7 · As stated in the scope of the patent scope, the 曰-suppression layer and the pixel electrode door w are not helpful, and the liquid crystal 8 L 宁 potential Orientation film. • σ applied for the scope of patent application mentioned in item 1. Gans #, 广曰 层盥彰, a, h, 4 Xinxin is not obvious, in which the liquid crystal 9 first film is provided with an aligning film. a seed liquid day display comprising: a first transparent substrate and a second transparent substrate; a crystal layer located on the first transparent substrate and the second transparent substrate, wherein the pixel electrode is located on the liquid crystal layer and the first The transparent substrate is between the pixel electrode and the first transparent substrate; the color light guide comprises a transparent::: and the transparent substrate, the B 4 transparent substrate, a black matrix, a coloring reed and a transparent protective layer, the coloring sound layer, the color layer comprising a part of the second part and the second part of the second part of the pixel electrode opposite to each other, its Un? extremely reflective electrode, in the ί color unit The thickness of the second file is twice the thickness of the part. Wherein the pixel, wherein the pixel, wherein the pixel, wherein the pixel, the liquid crystal display electrode material according to claim 9 is metallic silver. w 11 The liquid crystal display according to claim 9 is characterized in that the electrode material is metal aluminum. w 1 2· The liquid crystal display electrode material according to claim 9 is an alloy material. 1 3·The liquid crystal display as described in claim 9 Page 15 1282476 The electrode includes a layer of electrodes. An electrode layer and a reflective film are disposed on the liquid crystal display, and the liquid crystal display is as described in claim 9 of the patent application. A transparent insulating layer is disposed between the electrodes, and a liquid crystal display according to claim 9, wherein an alignment film is disposed between the composite layer and the pixel electrode. At the time of the liquid crystal display of claim 9, the alignment between the hair layer and the color light-emitting sheet is provided. a liquid crystal display comprising: a first transparent substrate and a second transparent substrate; a liquid crystal layer; wherein the two transparent substrates are located on the first/transparent substrate and the second plurality of pixel electrodes, which are located a liquid crystal layer and the first electrode; a common electrode of the moon substrate, located at the pixel electrode and the first space; a color filter of the substrate 3, the liquid crystal layer and the second transparent substrate The invention comprises a transparent substrate, a black matrix layer and a transparent protective layer, the colored layer comprises a first 'two-part two, the first part corresponding to the pixel electrode position; the knife and the first part, the pixel electrode is a reflective electrode The concentration of the second portion of the coloring is about twice the concentration of the first portion of the coloring. The liquid crystal display of claim 17, wherein the pixel electrode material is metallic silver. Eight Page 16 1282476 VI. Scope of Patent Application 1 9. The liquid crystal display of claim 17, wherein the pixel electrode material is metal. The liquid crystal display of claim 17, wherein the pixel electrode material is an alloy material. 2. The liquid crystal display of claim 17, wherein the pixel electrode comprises an electrode layer and a reflective film, the reflective film covering the electrode layer. 2. The liquid crystal display of claim 17, wherein a transparent insulating layer is disposed between the common electrode and the pixel electrode. 2. The liquid crystal display of claim 17, wherein an alignment film is disposed between the liquid crystal layer and the pixel electrode. The liquid crystal display of claim 17, wherein an alignment film is disposed between the liquid crystal layer and the color filter. Page 17