TW200521553A - Liquid crystal display panel - Google Patents

Abstract

This invention provides a liquid crystal display panel. It comprises a first polarized substrate, a first alignment film, a second polarized substrate, a second alignment film, and a liquid crystal molecule layer. The first polarized substrate possesses a first surface and a second surface. The first alignment film is arranged upon the first surface. The first transparent electrode is arranged between the first surface and the first alignment film. The second polarized substrate possesses a third surface and a fourth surface. The second alignment film arranged between the third surface and the second alignment film. The liquid crystal molecule layer possesses the first polarized substrate and the second polarized substrate, they are disposed at positions, so that the first surface is opposite to the third surface. The liquid crystal molecule layer is sandwiched between the first polarized substrate and the second polarized substrate.

Description

200521553

[Technical field to which the invention belongs] The present invention relates to a liquid crystal display panel, and more particularly to a liquid crystal display panel related to a light plate. [Prior art]

Active thin-film transistor (TFT-LCD) is an element used to actively control the light throughput of each (Pixel), and its image is generated so that the mother = independent pixels on the panel can produce the desired color. In order to achieve this E is τ ^ Ϊ cold cathode lamp must be used as the backlight of the display, each small = 5 :: pixels, the panel must be divided and manufactured-use 1 2 and switch to let light by. Liquid crystal display (LCD)

Structure, m: a light-changing screen. The liquid crystal can change its molecular junction light. Π ^ to allow different levels of light to pass through it (it can also completely block and align the amine display. It contains two polarizers, a color filter Light sheet array liquid crystal layer :: two: π determines the maximum luminous flux and the generation of color. Then an electricity is generated: a row between the sheets 'when a voltage is applied to the alignment layer'. Prepare-/ onion to make the alignment The liquid crystal of the layer interface is arranged in a certain direction. Each pixel is composed of red, green, and two silly sounds fh, X. It is like a video tube. A subpixel (Subplxel) user, if the sub-line n / The voltage changing electrode makes the liquid crystal divided or twisted, forming a gate to select the backlight light as

200521553 V. Description of the invention (2) " Transparent or not 'to produce the effect of light / dark development of the screen, and the color LCD panel is then passed through a color filter to form a color. Since the general light source is multi-directional (non-polarized light), the function of a polarizer is to filter out light in a non-specific direction and make it a light in a specific direction (polarized light). In short, the function of the polarizing plate is to make the light entering the liquid crystal layer into polarized light =, and the development of polarized light conversion technology is to improve the utilization rate of the backlight source, reduce the power consumption of the LCD, and finally enable the LCD panel to Meet the requirements of high brightness, low power consumption and high precision. Please refer to the first figure, which is a conventional LCD panel structure. The LCD panel structure includes: a first transparent substrate 1 1; a second transparent substrate 12; a liquid crystal layer 1 3 sandwiched between the first transparent substrate 丨 丨 and the second transparent substrate 12; -A first optical compensation film 1 4 attached to the first transparent substrate 丨 丨; and a second optical compensation film 15 attached to the second transparent substrate 12. Of course, in practical applications, the above structure further includes a first polarizing plate 16 attached to the first optical compensation film 1 and 4; and a second polarizing plate 1 7 'attached to the second optical compensation film 1 5 outer. The above structure further includes a first alignment film 18 attached to the first transparent substrate 丨 丨; and a second alignment film 19 attached to the second transparent substrate 12. The first transparent substrate 11 and the second transparent substrate 12 are mostly made of a non-stretchable glass substrate or a plastic substrate; the first polarizing plate 16 and the second polarizing plate 17 are mostly made of polymer. A polyvinyl alcohol (PVA) film is sandwiched between two triacetyl-cellulose (TAC) films; the first and second optical compensation films 14 and 15 are responsible for Provides the function of increasing the contrast of LCD panel viewing angle.

Page 6 200521553 V. Description of the invention (3) The key raw materials of polarizers are p VA and TAC. Although pva is a common plasticized material, it is similar to a transparent plastic sheet, but because the backlight first passes through the polarizer and then enters the liquid crystal The layer 'polarizer is magnified if it has flaws, so its surface must be smooth and fine, and it can be used for a long time in a high temperature and high humidity environment, which requires high material quality. Since the polarizing plate is attached to the lower layer of the panel, once there is a defect in the attaching process, it is quite easy to identify ^ ′ by visual inspection, which will cause the problem of lowering the LCD yield. In addition, the current [CD = field is generally moving towards thinner, more flexible LCD screens. Most existing LCDs use glass substrates as carriers, which not only fails to satisfy consumers in terms of thickness and weight, but also in the application of modeling Also restricted. Due to the lack of know-how, the applicant has carefully tested and researched Jiu Jiu, and devoted himself to the spirit of perseverance, and finally developed a simple and easy-to-manufacture liquid crystal display panel. [Summary of the Invention] The main purpose of Case 5 is to provide a simple and easy-to-manufacture liquid crystal display. The liquid crystal display panel is mainly a flexible glass substrate with a polarizing plate function instead of the traditional glass or plastic substrate. According to the present invention, the “light-stop substrate” is not only comparable to the traditional display panel made of a substrate on the substrate in terms of polarizing function, but also reduces the thickness and weight of the panel and saves the issue of polarizing plates attached by different manufacturers. The decrease in yield caused by the decrease in the thickness of the panel reduces the path of light travel, so the

Page 7 200521553 V. Description of the invention (4). The loss rate is also reduced, thereby improving the image quality of the display panel.

Another object of the present application is to provide a liquid crystal display panel, which includes a first polarizing substrate having a first surface and a second surface, a first alignment film disposed on the first surface, and a device. A first transparent electrode between the first surface and the first alignment film; a second polarizing substrate having a third surface and a fourth surface, a second alignment film disposed on the third surface, A second transparent electrode disposed between the third surface and the second alignment film; and a liquid crystal molecular layer, wherein the first polarizing substrate and the second polarizing substrate are based on the first surface and the third surface The liquid crystal molecular layers are disposed at positions facing each other, and the liquid crystal molecular layer is sandwiched between the first polarizing substrate and the second polarizing substrate. According to the above concept, wherein the first polarizing substrate and the second polarizing substrate are both flexible substrates having a function of a polarizing plate. According to the above concept, the first transparent electrode system is a transparent conductive film. According to the above concept, the transparent conductive film is made of a metal oxide.

According to the above concept, the second transparent electrode is a transparent conductive film made of a metal oxide. According to the above concept, the transparent conductive film is made of a metal oxide. According to the above concept, the liquid crystal display panel further includes a color light-transmitting sheet disposed between the first polarizing substrate and the liquid crystal layer.

Page 8 200521553 V. Description of the invention (5) ~ According to the above concept, wherein the liquid crystal display panel further includes a crystal layer, which is disposed on the third surface of the second polarizing substrate. According to the above-mentioned conception, "wherein the liquid crystal display panel further includes a first scientific compensation film" disposed on the second surface of the first polarizing substrate. Light According to the above concept, the liquid crystal display panel further includes a first and a first compensation film, which is disposed on the fourth surface of the second polarizing substrate. Light According to the above-mentioned concept, where are the first alignment film and the second alignment film fused together? Made of imine (po 1 y i m i de) resin. According to the above concept, the first polarizing substrate and the second polarizing plate are extended by a polyvinyl alcohol (PVA) matrix to extend the soil and the film, and then a layer of cellulose triacetate is laminated on each side. Made of triacetylcellulose (TAC) membrane. Yet another object of this case is to provide a liquid crystal display panel, which includes a first polarizing substrate having a first surface and a second surface; a first polarizing substrate 'having a second surface and a fourth surface And a liquid crystal molecular layer, wherein the first polarizing substrate and the second polarizing substrate are arranged at positions where the first surface and the third surface are opposite to each other, and the liquid crystal molecular layer is sandwiched between the first polarizing substrate And the second polarizing substrate. According to the above concept, the liquid crystal display panel further includes a first alignment film, which is disposed on the first surface. According to the above-mentioned concept, the liquid crystal display panel further includes a second alignment film, which is disposed on the third surface. According to the above concept, the liquid crystal display panel further includes a first transparent electrode, which is not disposed between the first surface and the first alignment film.

200521553 V. Description of the invention (6) According to the above concept, the liquid crystal display panel further includes a second transparent electrode, which is disposed between the third surface and the second alignment film. According to the above-mentioned concept, the liquid crystal display panel further includes a first optical compensation film disposed on the second surface of the first polarizing substrate. According to the above concept, the liquid crystal display panel further includes a second optical compensation film disposed on the fourth surface of the second polarizing substrate. [Embodiment] The liquid crystal display panel of this case will be fully understood by the following description of the embodiment, so that those skilled in the art can complete it. 'However, the implementation of this case cannot be limited by the following embodiments. Please refer to the second figure, which is a liquid crystal display panel according to a preferred embodiment of the present invention. The liquid crystal display panel may include a first polarizing substrate 21 having a first surface 211 and a second surface 212. The first alignment film 21 3 on the first surface 211 and a first transparent electrode 24 ′ disposed between the first surface 211 and the third alignment film 213. A first polarizing substrate 2 2 has a third surface 221. And a fourth surface 222, a second alignment film 2 2 3 disposed on the third surface 2 2 1 and a second alignment film 2 2 3 disposed on the third surface 2 2 1 and the second alignment film 2 2 3 'second transparency An electrode 2 5; and a liquid crystal molecular layer 2 3 ′, wherein the first polarizing substrate 21 and the second polarizing substrate 22 are disposed at positions where the first surface 21 and the third surface 21 are opposite to each other. The liquid crystal molecular layer 23 is sandwiched between the first polarizing substrate 21 and the second polarizing substrate 22.

Page 10 200521553 V. Description of Invention (7) The first polarizing substrate 21 and the second polarizing substrate 22 are both flexible substrates having a polarizing plate function. The first transparent electrode 24 is a transparent conductive film. The transparent conductive film is composed of It is made of metal oxide; similarly, the transparent electrode 25 is also a transparent conductive film, and the transparent conductive film is made of metal oxide. In other words, the polarizing substrate manufactured according to the invention is already functionally equivalent to the traditional substrate with a polarizing plate attached, and the use of a flexible material will have greater flexibility in application, so it can completely replace the traditional substrate. Glass or plastic substrate with polarizer. In practical applications, the liquid crystal display panel further includes a first optical compensation film 2 1 4 disposed on the second surface 2 1 2 of the first polarizing substrate 21. Similarly, the liquid crystal display panel further includes a second optical compensation film 2 2 4 disposed on the fourth surface 2 2 2 of the second polarizing substrate 22. The liquid crystal display panel further includes a color filter 26 arranged between the first polarizing substrate and the liquid crystal layer 23. When the liquid crystal display panel is applied to a thin film transistor μ liquid crystal display, the liquid crystal display panel further includes a thin film transistor 27 disposed on the third surface 221 of the second polarizing substrate 22 to control the liquid crystal layer. Movement of liquid crystal molecules in 2 3. In addition, the first alignment film 2 1 3 and the second alignment film 2 2 3 are used for positioning liquid crystal molecules before an electric field is applied. It is made of imine (ρ ο 1 yimide) resin. For example, it is printed with a groove on the film by a rotary transfer method. The molecules can lie in the groove in the same direction. And the first polarizing substrate ^ 1 and the second polarizing substrate 22 are stretched into a film from a polyvinyl 1 alcohol (PVA) matrix, and a layer is attached on each side = Ling--

200521553 Five 'invention description (8) Triacety 1 ce 1 1 u 1 ose (TAC) film, which is a light plate that only allows light in a certain direction to pass through, for example, in actual manufacturing On the other hand, the first polarizing substrate 21 and the second polarizing substrate 22 are driven by an electric field to display characters or patterns; and the first optical compensation film 21 4 and the second optical compensation film 224 are responsible for providing an LCD viewing angle contrast. This function can increase the viewing angle of LCD to 100 ~ 140 degrees.

See the third figure. According to another aspect of the present embodiment, the liquid crystal display panel may simply include a first polarizing substrate 31 having a first surface 3 1 1 and a first surface 312; a second polarizing substrate 32 having a first Three surfaces 321 and a fourth surface 322; and a liquid crystal molecular layer 33, wherein the first polarizing substrate 31 and the second polarizing substrate 3 2 are the first surface 3 1 1 and the far second surface 3 2 1 The liquid crystal molecular layers 33 are arranged opposite to each other, and are interposed between the first polarizing substrate 31 and the second polarizing substrate 32. Of course, the main feature of this case is to use a flexible polarizing substrate instead of the conventional glass substrate or plastic substrate, so the first polarizing substrate 3 and the second polarizing substrate are both flexible plastic substrates with a polarizing plate function. . In other words, 'the polarizing substrate manufactured according to the present invention, and the liquid crystal molecular layer sandwiched therebetween' is the basic structure of the liquid crystal display panel of this case, the functions of the display panel, and the possible The nature of the flexible material is enough to replace the traditional substrate with a polarizer attached. In practical applications, the liquid crystal display panel further includes a first transparent electrode 34 ^ disposed between the first surface 3 丨 丨 and the first alignment film 3 丨 3, wherein the first transparent electrode 34 is a A transparent conductive film made of a metal oxide. Similarly, the LCD panel is more compact

Page 12 200521553 V. Description of the invention (9). Contains a second transparent electrode 35 disposed between the third surface 321 and the second alignment film 3 2 3, wherein the second transparent electrode is a transparent conductive film The transparent conductive film is made of a metal oxide. The liquid crystal display panel further includes a color filter 36, which is disposed between the first polarizing substrate 31 and the liquid crystal layer 33. In addition, this embodiment is also the same as the previous embodiment. The liquid crystal display panel further includes a first alignment film 313 disposed on the first surface 311 and a second alignment film 323 disposed on the third surface 321. It is used to carry out the niche work of the liquid crystal molecules before the electric field is applied. The imine (ρ ο 1 y i m i d e) resin is made of, for example, a groove printed on the film by a rotary transfer method, so that the liquid crystal molecules can lie in the groove in the same direction. The liquid crystal display panel further includes a first optical compensation film 314 disposed on the second surface 3 1 2 and a second optical compensation film 3 2 4 'disposed on the fourth surface 322, which is responsible for providing an LCD viewing angle contrast. It can increase the viewing angle of LCD to 100 ~ 140 degrees. In addition, after the first polarizing substrate 31 and the second polarizing substrate 32 are stretched into a film from a poiyin alcohol (PVA) matrix, a layer of triacetin is attached to each side ( tri acetyl cellulose (TAC) film, which is a light plate that only allows light in a certain direction to pass through. For example, in actual manufacturing, the first polarizing substrate 3 and the second polarizing substrate 3 2 must be staggered and placed. The polarized substrate is driven by an electric field to display characters or patterns. However, the liquid crystal display produced by using the liquid crystal display surface of this case has a thinner thickness than the conventional one, so its light travel path is reduced, the light loss rate will be reduced accordingly, and its display effect will also be better than the conventional glass substrate or The method of attaching a polarizer to a plastic substrate works well.

Page 13 200521553 V. Description of the Invention (Luo) ^ In summary, the present invention provides a liquid crystal display panel which can be quickly and easily manufactured. By replacing the conventional polarizing substrate with a polarizing substrate, a glass substrate or a plastic substrate is used to attach a polarizing plate. In addition to making the liquid crystal display panel obtained in this case possible, it is possible to reduce the number of steps and save manufacturing costs, and it can also reduce its panel thickness And weight, to enhance its optical performance. Even though the present invention has been described in detail by the above-mentioned embodiments and can be modified by those skilled in the art by those skilled in the art, it is not inferior to those intended to be protected by the scope of the attached patent.

Page 14 200521553 The diagram is briefly explained. The first picture shows a conventional liquid crystal display panel; the second picture shows a preferred embodiment of a liquid crystal display panel according to the case; and the third picture shows a preferred embodiment according to the case. Another preferred embodiment of the liquid crystal display panel 0 Symbol description:

1 1: First transparent substrate 1 2: Second transparent substrate 1 3: Liquid crystal layer 14: First optical compensation film 15: Second optical compensation film 16: First polarizing plate 17: Second polarizing plate 18: No. One alignment film 19: second alignment film 21: first polarizing substrate 2 1 1: first surface 212: second surface

2 1 3: first alignment film 214: first optical compensation film 22: second polarizing substrate 2 2 1: third surface 22 2: fourth surface

Page 15 200521553 Brief description of the drawings 223: Second alignment film 2 2 4: Second optical compensation film 2 4: First transparent electrode 2 5: Second transparent electrode 2 6: Color filter 2 7: Thin film transistor Layer 31: first polarizing substrate 31 1: first surface 312: second surface

3 1 3: first alignment film 314: first optical compensation film 3 2: second polarizing substrate 3 2 1: third surface 3 2 2: fourth surface 323: second alignment film 324: second optical compensation film 3 4: first transparent electrode 3 5: second transparent electrode 3 6: color filter

Page 16

Claims (1)

200521553 6. Scope of patent application, 1. A liquid crystal display panel, comprising: a first polarizing substrate having a first surface and a second surface; a first alignment film disposed on the first surface A first transparent electrode, which is disposed between the first surface and the first alignment film; a second polarizing substrate, which has a third surface and a fourth surface; a second alignment film, which is Disposed on the third surface; a second transparent electrode disposed between the third surface and the second alignment film; and A liquid crystal molecular layer, wherein the first polarizing substrate and the second polarizing substrate are arranged at positions where the first surface and the third surface are opposite to each other, and the liquid crystal molecular layer is sandwiched between the first polarizing substrate and the Between the second polarizing substrates. 2. For example, the liquid crystal display panel of the first patent application range, wherein the first polarizing substrate and the second polarizing substrate are both flexible substrates having a function of a polarizing plate. 3. The liquid crystal display panel according to item 1 of the application, wherein the first transparent electrode is a transparent conductive film. 4. The liquid crystal display panel as claimed in claim 3, wherein the transparent conductive film is made of a metal oxide. 5. The liquid crystal display panel according to item 1 of the application, wherein the second transparent electrode is a transparent conductive film made of a metal oxide. 6. The liquid crystal display panel according to item 5 of the patent application, wherein the transparent conductive film is made of a metal oxide. Page 17 200521553 VI. Scope of Patent Application · 7 · The liquid crystal display panel of item 1 of the patent application scope further includes a color filter disposed between the first polarizing substrate and the liquid crystal layer. 8. The liquid crystal display panel according to item 1 of the patent application scope further includes a thin film transistor layer disposed on the third surface of the second polarizing substrate. 9. The liquid crystal display panel according to item 1 of the patent application scope further includes a first optical compensation film disposed on the second surface of the first polarizing substrate. 10 · The liquid crystal display panel according to item 1 of the patent application scope further includes a second optical compensation film disposed on the fourth surface of the second polarizing substrate. 1 1 · For the liquid crystal display panel of item 1 of the patent application scope, wherein the first alignment film and the second alignment film are made of poly? Made of imine (PO 1 y i m i de) resin. 1 2 · According to the liquid crystal display panel of the first item of the patent application, wherein the first polarizing substrate and the second polarizing substrate are stretched into a film from a poiyviny1 alcohol (PVA) matrix, and the two sides are bonded together. The upper layer is made of triacetylcellulose (TAC) membrane. 1 3 · A liquid crystal display panel comprising: a first polarizing substrate having a first surface and a second surface; a second polarizing substrate having a third surface and a fourth surface; and A liquid crystal molecular layer, wherein the first polarizing substrate and the second polarizing substrate are arranged at positions where the first surface and the third surface are opposite to each other, and the liquid crystal molecular layer is sandwiched between the first polarizing substrate and the Between the second polarizing substrates. 1 4 · If the liquid crystal display panel of item 13 in the scope of patent application, more inclusive Page 18, 200521553 6. The scope of patent application includes a first alignment film, which is arranged on the first surface. 15. The liquid crystal display panel according to item 13 of the patent application scope, further comprising a second alignment film, which is disposed on the third surface. 16. The liquid crystal display panel according to item 13 of the patent application scope, further comprising a first transparent electrode disposed between the first surface and the first alignment film. 17. The liquid crystal display panel according to item 13 of the patent application scope, further comprising a second transparent electrode disposed between the third surface and the second alignment film. 18. The liquid crystal display panel according to item 13 of the patent application scope further includes a first optical compensation film disposed on the second surface of the first polarizing substrate. 19. The liquid crystal display panel according to item 13 of the patent application scope further includes a second optical compensation film disposed on the fourth surface of the second polarizing substrate. Page 19