TWM568388U - Pixel structure of liquid crystal display - Google Patents

Abstract

The present invention is a pixel structure of a liquid crystal display, which is improved by a pixel structure having a slit in a pixel electrode, and is directed to each slit in a plurality of pixel electrodes to the pixel electrodes. The edge width of one of the sides and the distance between one of the adjacent pixel electrodes are modified such that the edge width of the pixel electrodes conforms to the minimum line width limit and the distance of the adjacent pixel electrodes Limitation, which in turn increases penetration efficiency.

Description

Pixel structure of LCD

This creation relates to a pixel structure of a liquid crystal display, which improves the edge width of a pixel electrode and the distance between adjacent pixel electrodes to increase the penetration rate.

With the rapid development of technology, the production of Liquid Crystal Display (LCD) has continuously improved, with the advantages of thin body saving space, light weight, low power consumption, no radiation, high-quality color, and stable and flicker-free images. , The LCD display has been widely used in modern life, such as: LCD TVs, smart phones, computers, digital cameras, cameras, notebook computers, tablet computers, monitors, industrial instrument panels and car navigation, etc. The LCD display The installation is inseparable in modern life.

A general liquid crystal display includes a liquid crystal panel and a backlight module, and the liquid crystal panel is usually composed of a color filter (CF) and a thin film transistor array substrate (Thin Film Transistor Array Substrate, TFT Array Substrate) and a liquid crystal layer (Liquid Crystal Layer) disposed between the color filter and the thin film transistor array substrate, and its operation method is to control the liquid crystal layer by applying a driving voltage on the two glass substrates The rotation of the liquid crystal molecules in the inside, the light of the backlight module is discounted and the picture is generated. According to the different orientation methods of the liquid crystal, the liquid crystal panels on the current mainstream market can be divided into the following types: vertical alignment (Vertical Alignment, VA), Twisted Nematic (TN), Super Twisted Nematic (STN), In-Plane Switching (IPS) and Fringe Field Switching (Fringe Field Switching, FFS), in which the technology of the wide-angle field switching (FFS) technology of the fringe electric field is further extended from the wide-angle technology of the plane conversion type (IPS), the edge Technical Field Switching wide viewing angle (FFS) liquid crystal display cell having a low power consumption, high transmittance, high brightness, fast response, no color cast, high color reproduction characteristics.

One of the liquid crystal display structures of the FFS wide-angle viewing angle technology (FFS) is to dispose the electrodes on the same substrate, which is divided into two layers of electrodes, and an insulating layer is arranged in the middle, the insulating layer is provided with a space electrode, the insulating layer A common electrode is provided below, and the common electrode is a full-fledged electrode. When different voltages are applied to the spacer electrode and the general electrode, a boundary electric field is generated at the edge of the spacer electrode to rotate the liquid crystal on the electrode plane. The homogeneously aligned liquid crystal molecules rotate inside the electrode surface layer to achieve high penetration and large viewing angle characteristics, and the liquid crystal display with the fringe electric field switching wide viewing angle technology is the widest viewing angle technology among the wide viewing angle technologies.

This creation is based on the conventional edge-field switching wide-angle technology (FFS) LCD display structure. Please refer to the first figure. As shown in the figure, the first image is a conventional edge-field switching wide-angle technology (FFS) A schematic diagram of the pixel structure of a liquid crystal display. An insulating layer 7 is disposed above the common electrode layer 6, and a plurality of pixel electrodes 8 are disposed above the insulating layer 7. The conventional fringe field switching wide viewing angle technology (FFS) liquid crystal One dimension A of the pixel structure of the display is described as 21um * 63um. The pixel electrodes have two slits 82, and one pixel electrode width W ₁ of each of the pixel electrodes 8 is 19um. One of the slits 82 has a slit width S ₁ of 5um. Since the width of the pixel space is limited to 21um, the distance D of the adjacent pixel electrodes 8 is 2um, but the adjacent pixels The effective distance of the electrode 8 must be maintained at a distance of 3-5um so as not to affect the penetration rate of the pixels, and if the distance D of the adjacent pixel electrodes 8 is adjusted to 5um, the pixel electrodes The adjacent distance of 8 meets the distance limit of the effective space, and for these The slit width of the slit 82 can be maintained 5um S _1, then one of the plurality of pixel electrode width W ₂ of the edge 8 will be thus reduced, the marginal width W ₂ will be reduced to 1.5um, factory machine process considerations limit the width-restricting It is about 3 ~ 5um, so that the edge width W ₂ of the pixel electrodes 8 cannot be manufactured, and it cannot meet the limit of the minimum width of 3um, which further affects its penetration rate.

In summary, there are many imperfect structures in the liquid crystal display device described above, so after a long period of research and innovation, the author created a pixel structure of the liquid crystal display, which focuses on the width of the pixel electrodes and The design of the width of the slit reduces the slit in each of the pixel electrodes, so that the width of the pixel electrodes can meet the limit of the minimum line width of 3um, and through the improvement of the pixel electrodes and the slits Increase the penetration rate of light to achieve the effect of increasing penetration rate.

The main purpose of this creation is to provide a pixel structure of a liquid crystal display for this creation, which is for each slit in a plurality of pixel electrodes to an edge width of one side of the pixel electrodes and adjacent ones The distance between the pixel electrodes is improved to improve the penetration efficiency of the LCD.

In order to achieve the above purpose, the present invention discloses a pixel structure of a liquid crystal display, which includes a substrate, an active element, at least two data lines, an organic layer, a common electrode layer, an insulating layer and a plurality of pixel electrodes , Each of the pixel electrodes further includes at least one slit, and the slit of each of the pixel electrodes further includes a first effective electric field region, and a side of each of the pixel electrodes It further includes a second effective electric field area, wherein the first effective electric field area has a first width, the pixel electrodes have an edge width, and the ratio of the edge width to the first width is 3/5.

In an embodiment of the present invention, it is also disclosed that the slit is the first effective electric field area, and the first width is at least 5 microns (um).

In an embodiment of the present invention, it is also disclosed that the second effective electric field area has a second width.

In an embodiment of the present invention, it is also disclosed that the pixel electrodes are spaced apart from the data lines and arranged on the upper two sides of the data lines.

In an embodiment of the present invention, it is also disclosed that the interval width of the second effective electric field region of the adjacent pixel structure is less than or equal to 2 microns (um).

In an embodiment of the present invention, it also discloses pixel electrodes adjacent to the data line, and the adjacent distance is at least 10 microns (um).

In one embodiment of this creation, it is also disclosed that the common electrode layer is a transparent conductive film, and the material of the common electrode is indium tin oxide (ITO), tin antimony oxide (ATO), conductive glass (FTO), aluminum oxide Zinc (AZO), potassium zinc oxide (GZO), indium zinc oxide (IZO).

In an embodiment of the present invention, it also discloses that the width of one of the pixel electrodes is at least 11 micrometers (um).

In order to make your reviewer have a better understanding and understanding of the characteristics of the creation and the effects achieved, I would like to use the preferred embodiments and detailed descriptions, the explanations are as follows:

This creation is based on the pixel structure of the conventional technology of liquid crystal display. It is an improvement of the liquid crystal display structure of the FFS (Frequent Field Switching) technology. In the pixel area, an insulating layer is provided on a common electrode layer. At least one pixel electrode is provided on the insulating layer, and the pixel electrode further includes at least one slit. Since the size of each pixel structure has a certain size, taking a five-inch FHD pixel as an example, the pixel size 21 microns (um) * 63 microns (um), the prior art is to set two slits in the pixel electrodes, and the width of the slits is maintained at 5 microns, between the slits of the pixel electrodes The width of the pixel electrode is 3 microns (um), and the width of one side of the slit in the pixel electrodes and the side of the pixel electrode is 3 microns (um), which are the Because the slits are provided in the pixel electrode, the pixel electrodes are divided into a plurality of widths, so that the widths of the pixel electrodes can meet the minimum line width of 3 microns (um), but in order to meet For the widths of the pixel electrodes, the distance between the adjacent pixel electrodes will shrink Short, so that the distance between the adjacent pixel electrodes is less than 5 microns (um), and if the adjacent pixel electrodes are kept at least 5 microns, then the pixel electrodes will not interfere with each other when energized It affects the light transmittance of the liquid crystal, but in the prior art, in order to make the pixel electrode meet the limit of the minimum line width, the distance between the adjacent pixel electrodes is shortened. The structure of this pixel is when the pixel electrodes are energized. It will affect the light transmittance. If the width of the adjacent pixel electrodes is adjusted to a minimum distance of 5 microns (um), and the width of the slits does not change, then it is necessary to shorten the pixel electrodes The slits within the width of the sides of the pixel electrodes, but if the width of the sides of the pixel electrodes is reduced, the minimum width limit cannot be met, so when the pixel electrodes are energized, they will also Affect its light transmittance. Therefore, the author proposes a pixel structure of a liquid crystal display, which improves the width of a plurality of pixel electrodes and the width of a slit in the plurality of pixel electrodes so that the pixel electrodes conform to the minimum line The width and the distance between the adjacent pixel electrodes are limited, thereby improving the penetration efficiency.

First, please refer to the second figure, which is a top view of a preferred embodiment of the creation, and the third figure, a cross-sectional view of a preferred embodiment of the creation. As shown in the figure, the present invention is a pixel structure 1 of a liquid crystal display, which includes a substrate 2, an organic layer 5, a common electrode layer 6, an insulating layer 7 and a plurality of picture electrodes 8.

Wherein, an active element 3 is disposed on the substrate 2, and two data lines 4 are separately disposed on the substrate 2, and the data lines 4 are separately disposed on one side of the active element 3, wherein the active element 3 It is a thin-film transistor. The organic layer 5 is disposed on the substrate 2 and covers the active device 3 and the data lines 4. The common electrode layer 6 is disposed on the organic layer 5, wherein the common The electrode layer 6 is a transparent conductive film, and its materials are indium tin oxide (ITO), tin antimony oxide (ATO), conductive glass (FTO), aluminum zinc oxide (AZO), zinc oxide potassium (GZO), indium zinc oxide ( IZO), the insulating layer 7 is disposed on the common electrode layer 6, and the pixel electrodes 8 are disposed on the insulating layer 7, and each of the pixel electrodes 8 further includes at least one slit 82 Among them, the pixel electrodes 8 may be transparent conductive films, and the materials are indium tin oxide (ITO), antimony tin oxide (ATO), conductive glass (FTO), aluminum zinc oxide (AZO), zinc oxide potassium ( GZO), indium zinc oxide (IZO).

Then please continue to refer to the fourth figure, which is a schematic diagram of one of the preferred embodiments of the creation. As shown in the figure, this embodiment uses pixels as one of the preferred dimensions A for description, and the width of the dimension A is 21 For example, when the pixel electrodes 8 are energized, an effective electric field area will be generated around them, and the at least one slit 82 in the pixel electrodes 8 will also generate an effective electric field area. The at least one slit 82 of each of the pixel electrodes 8 further includes a first effective electric field region 84, and one side of each of the pixel electrodes 8 further includes a second effective electric field region 86, and the The sum of the number of the first effective electric field regions 84 and the number of the second effective electric field regions 86 is greater than the number of each of the pixel electrodes 8, and the pixel electrodes 8 have a pixel electrode width W ₁ , and further It is illustrated that the at least one slit 82 further includes the first effective electric field region 84. The first effective electric field region 84 has a first width R _1. The width of the first width R ₁ is at least 5 microns (um), wherein The width of the first width R ₁ is equal to the at least one slit A slit width S _{1 of} 82, and an edge width W ₂ from the side of the at least one slit 82 in the pixel electrodes 8 to the side of the pixel electrodes 8 is at least 3 microns, and the The ratio of the edge width W ₂ of the pixel electrodes 8 to the first width R ₁ is 3/5, due to the conventional technology in order to maintain the first width R _{1 to} be a minimum width of 5 μm and the adjacent pixels The distance between the electrodes is a minimum distance of 5 microns, and the edge width W _{2 is} reduced, but this will cause the ratio of the edge width W ₂ to the first width R _{1 to} be less than 3/5, which will cause the edge electric field to become unstable, and After the ratio of the edge width W ₂ to the first width R ₁ is 3/5, it can satisfy the minimum line width of the edge width W ₂ of 3 μm and the adjacent ones. The spatial distance of the pixel electrode 8 is limited to increase the penetration efficiency.

In addition, in order to satisfy that the first width R ₁ is a minimum width of 5 μm and the edge width W _{2 is a} minimum width of 3 μm, the distance D between adjacent pixel electrodes is shortened, resulting in the adjacent width The pixel electrode 8 is too close, and the formed pixel electrode is unstable, which affects the transmittance. In this embodiment, first, the pixel electrode 8 has the second effective electric field region 86 on one side. The second effective electric field region 86 includes a second width R _2. The width of the second width R ₂ is adjusted to at least 4 micrometers. Furthermore, since each of the pixel electrodes 8 is spaced apart from the data lines 4 and arranged on the upper two sides of the data lines 4, the data lines 4 are arranged on the pixels Each pixel interval is further distinguished between the electrodes 8, and the second effective electric field region 86 of the adjacent pixel electrodes 8 includes an interval S _{2. In} this embodiment, the width of the interval S ₂ is adjusted to be less than Or equal to 2 microns, and finally, the adjacent pixel electrodes 8 on both sides of the data lines 4 further include the distance D, via the ratio 3 of the edge width W ₂ to the first width R ₁ After / 5, the ratio of the distance D of the adjacent pixel electrodes 8 in the dimension A to the pixel electrode W ₁ is 10/11, so in the dimension A, the distance D must be at least 10 micrometers, if the distance between the adjacent pixel electrodes 8 is less than 10 micrometers, the penetration rate will be reduced. Pixel electrode width W ₁ of at least 11 microns, the width of the edge of the pixel electrode width W ₁ of the at least one slit lines 82 for the sum of the width of the slit S ₁ and the edge of the width W _2, and seen from the above description W ₂ meets the minimum width of 3 microns.

In summary, the pixel structure 1 of the liquid crystal display of the present invention is directed to the distance between the pixel electrodes adjacent to the pixel electrodes and the edges from the slits to the sides of the pixel electrodes The width is improved to keep the distance between the adjacent pixel electrodes at least 10 microns wide, and the width of the edge meets the minimum width of 3 microns. This creation greatly improves the adjacent pixel electrodes The problem of too close distance, and the width of the edge needs to meet the minimum width of 3 microns, combined with the above technical features, the transparency of the pixel structure of the LCD is greatly improved.

However, the above are only the preferred embodiments of this creation and are not intended to limit the scope of the implementation of the present invention. Any changes and modifications based on the shape, structure, characteristics and spirit described in the scope of the patent application for this creation , Should be included in the scope of patent applications for this creation.

1‧‧‧Single gap LCD panel structure

2‧‧‧ substrate

3‧‧‧Active components

4‧‧‧Data cable

5‧‧‧ organic layer

6‧‧‧Common electrode layer

7‧‧‧Insulation

8‧‧‧Pixel electrode

82‧‧‧Slit

84‧‧‧The first effective electric field area

86‧‧‧The second effective electric field area

A‧‧‧Size

D‧‧‧Distance

R ₁ ‧‧‧ First width

R ₂ ‧‧‧second width

W ₁ ‧‧‧ Pixel electrode width

W ₂ ‧‧‧Edge width

S ₁ ‧‧‧ slit width

S ₂ ‧‧‧ interval

The first picture: it is a schematic diagram of the prior art of the creation; the second picture: it is the top view of the preferred embodiment of the creation; the third picture: it is the preferred embodiment of the creation The cross-sectional view; and the fourth figure: it is a schematic diagram of a preferred embodiment of the creation.

Claims (9)

A pixel structure of a liquid crystal display, comprising: a substrate; an active element, which is arranged on the substrate; at least two data lines which are separately arranged on the substrate, and the data line is arranged on the active element One side; an organic layer, which is disposed on the substrate and covers the data lines; a common electrode layer, which is disposed on the organic layer; an insulating layer, which is disposed on the common electrode; and a plurality of pixels Electrodes disposed on the insulating layer, each of the pixel electrodes further includes at least one slit, and each of the pixel electrodes at least one slit further includes a first effective electric field region, And one side of the pixel electrodes further includes a second effective electric field region; wherein the first effective electric field region includes a first width, and the side of the at least one slit in the pixel electrodes reaches the several One edge width of the side of the pixel electrode, and the ratio of the edge width to the first width is 3/5. The pixel structure of a liquid crystal display as described in item 1 of the patent application scope, wherein the pixel electrodes have a pixel electrode width. The pixel structure of a liquid crystal display as described in item 1 of the patent application, wherein the first width is at least 5 microns (um) and the edge width is at least 3 microns. The pixel structure of the liquid crystal display as described in item 1 of the patent application, wherein the second effective electric field area has a second width. The pixel structure of a liquid crystal display as described in item 1 of the patent application scope, wherein the pixel electrodes are spaced apart from the data lines and arranged on the two sides above the data lines. The pixel structure of the liquid crystal display as described in item 1 of the patent application range, wherein the width of one interval of the second effective electric field regions of the adjacent pixel electrodes is less than or equal to 2 microns (um). The pixel structure of the liquid crystal display as described in item 1 of the patent application scope, wherein the pixel electrode adjacent to the data line has an adjacent distance of at least 10 microns (um). The pixel structure of a liquid crystal display as described in item 1 of the patent scope, wherein the common electrode layer is a transparent conductive film, and the material of the common electrode layer is indium tin oxide (ITO), tin antimony oxide (ATO), Conductive glass (FTO), aluminum zinc oxide (AZO), zinc zinc oxide (GZO), indium zinc oxide (IZO). The pixel structure of a liquid crystal display as described in item 1 of the patent application range, wherein one of the pixel electrodes has a pixel electrode width of at least 11 microns (um).