CN101295718A - Liquid crystal display panel and active element array substrate thereof - Google Patents

Abstract

The invention discloses an active component array substrate which comprises a substrate, a plurality of scanning lines, a plurality of data lines, a plurality of pixel units and connecting lines. The scanning lines, the data lines, the pixel units and the connecting lines are all arranged on the substrate. Each pixel unit comprises an active element, a first pixel electrode, a second pixel electrode and a third pixel electrode. The active elements are electrically connected with the scanning lines and the data lines. The first and second pixel electrodes are respectively located at two opposite sides of the scanning line and electrically connected with the active element. The third pixel electrode is electrically insulated from the active element. In the pixel units arranged in the same row, each third pixel electrode is electrically connected with the second pixel electrode controlled by the previous-stage scanning line through the corresponding connecting line. The liquid crystal display panel has the characteristic of wide visual angle, can improve the problem of color cast, and has the advantages of simple manufacturing process and low manufacturing cost.

Description

Liquid crystal display panel and its active element array substrate

technical field

The present invention relates to a liquid crystal display panel and its active element array substrate, and in particular to a wide viewing angle (wide viewing angle) liquid crystal display panel and its active element array substrate.

Background technique

At present, the performance requirements of thin film transistor liquid crystal display (TFT-LCD) in the market are aimed at high contrast, high brightness, fast response and wide viewing angle. At present, technologies that can meet the requirements of wide viewing angles, such as twisted nematic liquid crystal (TN) plus wide viewing film (wide viewing film), in-plane switching (IPS) liquid crystal display, fringe field switching (fringe field switching) liquid crystal display and multi-domain vertical alignment (MVA) thin film transistor liquid crystal display.

For existing multi-domain vertical alignment liquid crystal display panels, the alignment protrusions or slits formed on the color filter substrate or thin film transistor array substrate can make the liquid crystal The molecules are arranged in multiple directions to obtain multi-domain, so the multi-domain vertical alignment liquid crystal display panel can meet the requirement of wide viewing angle.

Although the existing multi-domain vertical alignment liquid crystal display panel can meet the requirement of wide viewing angle, it has the problem of color shift. The so-called color cast means that when users watch the images displayed on the monitor at different viewing angles, they will see images with different color gradations from the original images. The image is a whitish image. This color cast problem will destroy the display quality of the image. In order to solve the problem of color shift, some solutions have been proposed, one of which is to form an additional capacitor in a single pixel unit. The capacitor utilizes electrical coupling to generate electric fields of different magnitudes on pixel electrodes in a single pixel unit. Thereby, different arrangements of liquid crystal molecules can be produced. Although this method can improve the color shift phenomenon, it is prone to the disadvantages of resistance-capacitance hysteresis (RC delay) effect, resulting in distortion of the display screen and degradation of display quality.

Another approach is to add a transistor within a single pixel unit. That is to say, there are two transistors in a single pixel unit. These two transistors make the pixel electrodes in a single pixel unit generate different electric fields, and then generate different arrangements of liquid crystal molecules, so as to achieve the effect of eliminating color shift. However, this approach needs to form two transistors in a single pixel unit and increase wiring (for example, adding scanning lines), so the manufacturing process is very complicated and the manufacturing cost is also high.

Contents of the invention

The object of the present invention is to provide an active element array substrate to improve the problem of color shift and improve the display quality of the liquid crystal display.

Another object of the present invention is to provide a liquid crystal display panel, which includes the above-mentioned active device array substrate, has a wide viewing angle, and improves the problem of color shift.

To achieve the above object, the present invention proposes an active device array substrate, which includes a substrate, a plurality of scanning lines and data lines, a plurality of pixel units, and a plurality of connection lines. These scan lines, data lines, pixel units and connection lines are all configured on the substrate. Wherein, each pixel unit includes an active element, a first pixel electrode, a second pixel electrode and a third pixel electrode. The active element is electrically connected with the scan line and the data line. The first and second pixel electrodes are respectively located on two opposite sides of the scanning line, and are electrically connected to the active element. The third pixel electrode is located above the active device and electrically insulated from the active device. In the pixel units arranged in the same row, each third pixel electrode is electrically connected to the second pixel electrode controlled by the previous scan line through a corresponding connection line. Wherein, each first pixel electrode is surrounded by two connection lines, a second pixel electrode and a third pixel electrode, and each third pixel electrode is located between a second pixel electrode and a first pixel electrode.

In the active element array substrate of the present invention, in the same pixel unit, the voltage polarity of the first pixel electrode is the same as that of the second pixel electrode, and the voltage polarity of the third pixel electrode is the same as that of the first pixel electrode. The voltage polarity is reversed.

In the active device array substrate of the present invention, the above-mentioned multiple first pixel electrodes, multiple second pixel electrodes, multiple third pixel electrodes and multiple connection lines belong to the same layer of electrode patterns.

In the active device array substrate of the present invention, in each of the above pixel units, the total area of the first pixel electrode and the second pixel electrode is equal to the area of the third pixel electrode.

In the active device array substrate of the present invention, in each of the above pixel units, the total area of the first pixel electrode and the second pixel electrode is greater than the area of the third pixel electrode.

In the active device array substrate of the present invention, the above-mentioned active device array substrate further includes multi-layer reflective layers respectively disposed on corresponding third pixel electrodes.

In the active device array substrate of the present invention, the above-mentioned active device includes an amorphous silicon thin film transistor (a-Si TFT) or a polysilicon thin film transistor (poly silicon thin film transistor).

The present invention further provides a liquid crystal display panel, which includes the above-mentioned active element array substrate, an opposite substrate and a liquid crystal layer. The opposite substrate is located on the active element array substrate. The liquid crystal layer is disposed between the active device array substrate and the opposite substrate.

In the liquid crystal display panel of the present invention, in each of the above pixel units, the distance between the opposite substrate and the first pixel electrode is a first pitch. The distance between the opposite substrate and the second pixel electrode is a second pitch. The first pitch is twice the second pitch.

The present invention further provides an active device array substrate, which includes a substrate, a plurality of scanning lines, a plurality of data lines, a plurality of pixel units and a plurality of conductor patterns. A plurality of scanning lines and data lines, a plurality of pixel units and conductor patterns are all arranged on the substrate. A plurality of pixel units are electrically connected to corresponding scan lines and data lines, wherein each pixel unit includes an active device and a pixel electrode. The active element is electrically connected with the scan line and the data line. The pixel electrode is electrically connected to the active element, and has a first electrode portion located above the active element and a second electrode portion electrically connected to the first electrode portion. There is a slit between the second electrode part and the first electrode part. Each conductive pattern has a main body and an extension. The main body parts are respectively located on the first electrode parts and are electrically connected to the corresponding first electrode parts. These extension parts extend from the main body part to the direction of the pixel electrodes controlled by the next scan line, and extend into the corresponding slits. Each conductor pattern is electrically insulated from the pixel electrodes controlled by the subsequent scan lines. Each second electrode part is located between the two main parts and between the two extension parts.

In the active device array substrate of the present invention, among the pixel electrodes arranged in the same row, the voltage polarity of each pixel electrode is opposite to the voltage polarity of the pixel electrodes controlled by the previous and subsequent scan lines.

In the active device array substrate of the present invention, the above-mentioned plurality of main body portions and the plurality of extension portions belong to the same layer of conductor patterns.

In the active device array substrate of the present invention, the above-mentioned first electrode portion and the second electrode portion belong to the same layer of electrode patterns.

In the active device array substrate of the present invention, the above-mentioned pixel electrode and the conductive pattern belong to the same layer of transparent conductive pattern.

In the active device array substrate of the present invention, the above-mentioned active device includes an amorphous silicon thin film transistor or a polysilicon thin film transistor.

The present invention further proposes a liquid crystal display panel, which includes the above-mentioned active device array substrate, an opposite substrate and a liquid crystal layer. The opposite substrate is located on the active element array substrate. The liquid crystal layer is disposed between the active device array substrate and the opposite substrate.

By means of the above-mentioned connection lines or conductor patterns of the active device array substrate, the liquid crystal molecules in the same pixel unit form multi-domains on the pixel electrodes with different voltages. Thereby, the liquid crystal display panel of the present invention has the characteristic of wide viewing angle, and can also improve the problem of color shift. In addition, since each pixel unit does not need to add other active components or circuits, compared with the prior art, the present invention has the advantages of simple manufacturing process and low manufacturing cost.

Description of drawings

In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

FIG. 1A is a schematic top view of an active device array substrate according to a first embodiment of the present invention.

FIG. 1B is a schematic cross-sectional view of a liquid crystal display panel according to a first embodiment of the present invention.

FIG. 1C is a schematic cross-sectional view along line K-K in FIG. 1A .

FIG. 2A is a schematic top view of an active device array substrate according to a second embodiment of the present invention.

2B is a schematic cross-sectional view of a liquid crystal display panel according to a second embodiment of the present invention.

3A is a schematic top view of an active device array substrate according to a third embodiment of the present invention.

3B is a schematic cross-sectional view of a liquid crystal display panel according to a third embodiment of the present invention.

Detailed ways

first embodiment

1A is a schematic top view of the active element array substrate of the first embodiment of the present invention, and FIG. 1B is a schematic cross-sectional view of the liquid crystal display panel of the first embodiment of the present invention, and the active element array substrate 200a shown in FIG. 1A line I-I cross-section obtained. FIG. 1C is a schematic cross-sectional view along line K-K in FIG. 1A . Please refer to FIG. 1A to FIG. 1C at the same time. The liquid crystal display panel 100 a of this embodiment includes an active device array substrate 200 a , a pair of facing substrates 300 and a liquid crystal layer 400 . The opposite substrate 300 is located on the active device array substrate 200a, and the liquid crystal layer 400 is disposed between the active device array substrate 200a and the opposite substrate 300, as shown in FIG. 1B.

The active device array substrate 200 a includes a substrate 210 , a plurality of scan lines 220 a and data lines 220 b , a plurality of pixel units 230 a and a plurality of connection lines 240 . These scan lines 220 a , data lines 220 b , pixel units 230 a and connection lines 240 are all disposed on the substrate 210 . Each pixel unit 230a includes an active device 232a, a first pixel electrode 234a, a second pixel electrode 234b and a third pixel electrode 234c. The active device 232a is electrically connected to the scan line 220a and the data line 220b, and the active device 232a is, for example, an amorphous silicon thin film transistor or a polysilicon thin film transistor. The first pixel electrode 234a and the second pixel electrode 234b are respectively located on two opposite sides of the scan line 220a, and are electrically connected to the active device 232a. In this way, the active device 232a can control the first pixel electrode 234a and the second pixel electrode 234b. The third pixel electrode 234c is located above the active device 232a and electrically insulated from the active device 232a. Each first pixel electrode 234a is surrounded by two connection lines 240, a second pixel electrode 234b and a third pixel electrode 234c, and each third pixel electrode 234c is located between a second pixel electrode 234b and a first pixel electrode 234a between.

In the pixel units 230a arranged in the same row, each third pixel electrode 234c is electrically connected to the second pixel electrode 234b controlled by the previous scan line 220a through the corresponding connection line 240, as shown in FIG. 1A. Therefore, the third pixel electrode 234c is controlled by the active device 232a on the previous scan line 220a. In addition, the first pixel electrode 234a, the second pixel electrode 234b, the third pixel electrode 234c and the connection line 240 can be made of transparent conductive materials, such as indium tin oxide or indium zinc oxide. oxide).

In addition, the active device array substrate 200a may further include a flat layer 260a, as shown in FIG. 1B . In a preferred embodiment, the thickness of the flat layer 260a is between 2 and 3 microns (μm). A plurality of first pixel electrodes 234a, second pixel electrodes 234b and third pixel electrodes 234c are disposed on the flat layer 260a. The flat layer 260a is disposed on the substrate 210 and covers the scan lines 220a and the data lines 220b as well as the active devices 232a to avoid parasitic capacitors.

The driving method of the liquid crystal display panel 100a is, for example, a line inversion driving method. Therefore, the voltage polarity of the first pixel electrode 234a and the second pixel electrode 234b in the same pixel unit 230a will be the same as that of the first pixel electrode 234a and the second pixel electrode 234b controlled by the previous and subsequent scan lines 220a. The voltage polarity is reversed. In addition, in the same pixel unit 230a, the connection line 240 can be located beside the first pixel electrode 234a to electrically connect the third pixel electrode 234c with the second pixel electrode 234b of the previous stage. Therefore, the voltage of the connection line 240 is the same as the voltage of the third pixel electrode 234c, and the voltage polarities of the first pixel electrode 234a and the second pixel electrode 234b are the same as those of the connection line 240 and the third pixel electrode 234c. on the contrary.

Since each first pixel electrode 234a is surrounded by the second pixel electrode 234b, the third pixel electrode 234c and the connecting line 240 controlled by the previous scan line 220a with the opposite voltage polarity, in a single pixel unit 230a, The liquid crystal molecules form multiple display domains on the first pixel electrode 234a. In the same row of pixel units 230a, each second pixel electrode 234b is located between the third pixel electrode 234c with opposite voltage polarity and the first pixel electrode 234a controlled by the next-level scan line 220a, and each third pixel electrode 234b is located between the first pixel electrode 234a and the second pixel electrode 234b with opposite voltage polarities. Therefore, in a single pixel unit 230a, the liquid crystal molecules also form multiple display domains on the second pixel electrode 234b and the third pixel electrode 234c. It can be seen that these multiple display domains are respectively formed on the first pixel electrode 234a, the second pixel electrode 234b and the third pixel electrode 234c. The liquid crystal molecules in a single pixel unit 230a form multiple display domains, so that the liquid crystal display panel 100a can achieve the characteristic of wide viewing angle.

In addition, since the electric field distribution patterns above the first pixel electrode 234a, the second pixel electrode 234b, and the third pixel electrode 234c are not the same, so in each multi-display domain, the characteristics of the relationship between the electric field distribution and the luminance change are also different. , so the problem of color cast can be improved.

In this embodiment, since the first pixel electrode 234a, the second pixel electrode 234b, the third pixel electrode 234c and the connection line 240 belong to the same electrode pattern, the first pixel electrode 234a, the second pixel electrode 234a on the active device array substrate 200a, the second The pixel electrode 234b, the third pixel electrode 234c and the connection line 240 can be manufactured by the same process. Based on the above, this embodiment not only simplifies the manufacturing process, but also reduces the manufacturing time.

In addition, for different product requirements, in each pixel unit 230a, the total area of the first pixel electrode 234a and the second pixel electrode 234b may be equal to or greater than the area of the third pixel electrode 234c.

In addition, referring to FIG. 1B, the opposite substrate 300 of this embodiment may be a color filter substrate (colorfilter substrate), which includes a substrate 310, a plurality of color filter patterns 320a, and a black matrix layer (black matrix, BM) 320b and a common electrode 330 .

A plurality of color filter patterns 320a and the black matrix layer 320b are disposed on the substrate 310, and the common electrode 330 is disposed on the color filter patterns 320a and the black matrix layer 320b. The plurality of color filter patterns 320a includes a plurality of red filter patterns, green filter patterns and blue filter patterns to generate various colored lights. In addition, the color filter pattern 320a may be made of resin material.

The black matrix layer 320b is located between the plurality of filter patterns 320a. In this embodiment, the liquid crystal display panel 100a may be a transmissive liquid crystal display panel (transmissive LCD), and the black matrix layer 320b is suitable for covering the scanning lines 220a, the data lines 220b and the active elements 232a on the active element array substrate 200a, In order to prevent the display quality of the liquid crystal display panel 100a from being affected. However, a reflective layer may be added above the active element 232a of the active element array substrate 200a, and part of the black matrix layer 320b above the corresponding active element 232a may be removed, or the metal layer corresponding to the black matrix layer 320b in the storage capacitor region may be removed. If removed, the light from outside the liquid crystal display panel 100a can be reflected. Therefore, the liquid crystal display panel 100a may be a microreflective liquid crystal display panel. In addition, the black matrix layer 320b can be made of resin material or metal.

second embodiment

2A is a schematic top view of an active device array substrate according to a second embodiment of the present invention, and FIG. 2B is a schematic cross-sectional view of a liquid crystal display panel according to a second embodiment of the present invention, and the active device array substrate 200b shown in FIG. 2A line J-J profile obtained. Please refer to FIG. 2A and FIG. 2B, this embodiment is similar to the first embodiment, the main difference between the two is: the liquid crystal display panel 100b of this embodiment is a transflective LCD. Specifically, in the liquid crystal display panel 100b of this embodiment, the active element array substrate 200b further includes a plurality of reflective layers 250, and these reflective layers 250 are respectively arranged on the corresponding third pixel electrodes 234c to reflect light from the liquid crystal. The light outside the display panel 100b.

For different product requirements, in each pixel unit 230b, the total area of the first pixel electrode 234a and the second pixel electrode 234b may be equal to or not equal to the area of the third pixel electrode 234c. In the case of the above inequality, the total area of the first pixel electrode 234a and the second pixel electrode 234b may be larger or smaller than the area of the third pixel electrode 234c.

In this embodiment, the liquid crystal display panel 100b may be a dual cell gap transflective liquid crystal display panel (dual cell gap transflective LCD), as shown in FIG. 2B . Specifically, since the flat layer 260b of the active device array substrate 200b is hollowed out at the first pixel electrode 234a and the second pixel electrode 234b, the flat layer 260b has a plurality of corresponding first pixel electrodes 234a and second pixel electrodes. 234b of the opening H, and the first pixel electrode 234a and the second pixel electrode 234b are respectively located in each opening H. Thus, in each pixel unit 230b, the distance between the first pixel electrode 234a and the second pixel electrode 234b and the opposite substrate 300 is a first distance D1, and the distance between the opposite substrate 300 and the third pixel electrode 234c is The distance is a second distance D2, and the first distance D1 is not equal to the second distance D2. In a preferred embodiment, the first distance D1 is twice the second distance D2.

third embodiment

3A is a schematic top view of an active device array substrate according to a third embodiment of the present invention. 3B is a schematic cross-sectional view of a liquid crystal display panel according to a third embodiment of the present invention, and the active device array substrate 200c shown in FIG. 3B is obtained by cross-sectioning the line L-L in FIG. 3A . Please refer to FIG. 3A and FIG. 3B at the same time. The liquid crystal display panel 100c includes an active element array substrate 200c , a pair of facing substrates 300 and a liquid crystal layer 400 . Wherein, the opposite substrate 300 is located on the active device array substrate 200c, and the liquid crystal layer 400 is disposed between the opposite substrate 300 and the active device array substrate 200c.

The active device array substrate 200c includes a substrate 210, a plurality of scan lines 220a', a plurality of data lines 220b', a plurality of pixel units 230c and a plurality of conductor patterns 270. Wherein, a plurality of scanning lines 220a' and data lines 220b', a plurality of pixel units 230c and conductive patterns 270 are all disposed on the substrate 210, and the pixel units 230c are electrically connected to corresponding scanning lines 220a' and data lines 220b'. In addition, each pixel unit 230c includes an active device 232b and a pixel electrode 236 .

The active device 232b is electrically connected to the scan line 220a', the data line 220b' and the pixel electrode 236. Wherein, the active device 232b is, for example, an amorphous silicon thin film transistor or a polycrystalline silicon thin film transistor. The pixel electrode 236 has a first electrode portion 236a located above the active device 232b, and a second electrode portion 236b electrically connected to the first electrode portion 236a. Wherein, there is a slit S between the second electrode portion 236b and the first electrode portion 236a.

Each conductive pattern 270 has a main body portion 272a and an extension portion 272b. In a single pixel unit 230c, each main body portion 272a is located on the first electrode portion 236a, and is electrically connected to the corresponding first electrode portion 236a. Each extension portion 272b extends from each main body portion 272a to the direction of the pixel electrode 236 controlled by the next-level scan line 220a', and extends into the corresponding slit S. Each second electrode portion 236b is located between two main body portions 272a and between two extension portions 272b, as shown in FIG. 3A . In addition, each conductive pattern 270 is electrically insulated from the pixel electrode 236 controlled by the subsequent scan line 220a'.

Please refer to FIG. 3A , the driving method of the liquid crystal display panel 100c is the same as the previous embodiment. The voltage polarity of the pixel electrode 236 is opposite to the voltage polarity of the pixel electrode 236 controlled by the previous and subsequent scan lines 220a', and the pixel electrode 236 corresponding to each conductor pattern 270 and its main body 272a has the same voltage. . Since the extension portion 272b of the conductor pattern 270 extends into the slit S in the pixel electrode 236 controlled by the subsequent scan line 220a′, the second electrode portion 236b of each pixel electrode 236 will be covered by the conductor pattern of the opposite voltage polarity. 270 surrounded. For example, when the second electrode part 236b has a positive voltage polarity, the conductor pattern 270 around it has a negative voltage polarity, as shown in FIG. 3A . The first electrode portion 236a is surrounded by a conductor pattern 270 having an opposite voltage polarity, and a second electrode portion 236b controlled by a subsequent scan line 220a'. Therefore, the liquid crystal molecules in the same pixel unit 230c will form multiple display domains above the first electrode portion 236a and the second electrode portion 236b. In this way, this embodiment can improve the problem of color shift.

In this embodiment, the plurality of main body portions 272 a and the extension portions 272 b of the plurality of conductive patterns 270 may belong to the same layer of conductive patterns. Therefore, the main body portion 272a and the extension portion 272b of the conductive pattern 270 can be manufactured under the same thin film process. The plurality of first electrode portions 236a and the second electrode portions 236b of the plurality of pixel electrodes 236 may belong to the same layer of electrode patterns, so the first electrode portions 236a and the second electrode portions 236b may also be manufactured under the same thin film process. become. Therefore, this embodiment not only simplifies the manufacturing process, but also reduces the manufacturing process time.

The pixel electrode 236 can be made of transparent conductive material, such as indium tin oxide or indium zinc oxide, and the conductive pattern 270 can also be made of transparent conductive material besides metal material. Therefore, the liquid crystal display panel 100c may be a transflective liquid crystal display panel or a transmissive liquid crystal display panel. In addition, the pixel electrode 236 and the conductive pattern 270 may belong to the same layer of transparent conductive pattern, so the pixel electrode 236 and the conductive pattern 270 may be manufactured under the same thin film process.

For different product requirements, in each pixel electrode 236, the area of the first electrode portion 236a may be equal to or not equal to the area of the second electrode portion 236b. In the case of the above unequal, the area of the first electrode part 236a may be larger or smaller than the area of the second electrode part 236b.

To sum up, the present invention enables the liquid crystal molecules in the same pixel unit to form multiple display domains on the pixel electrodes with different voltages, thereby enabling the liquid crystal display panel to have a wide viewing angle. At the same time, since the electric field distribution patterns above the first pixel electrode, the second pixel electrode and the third pixel electrode are different, the characteristics of the relationship between the electric field distribution and the luminance change are also different in each multi-display domain. Therefore, the present invention can also improve the problem of color shift, so as to improve the display quality. In addition, in the present invention, since the active device array substrate of the present invention does not require additional active devices or circuits, the problem of color shift can be improved. Therefore, compared with the prior art, the present invention has the advantages of simple manufacturing process and low manufacturing cost.

Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art to which the present invention belongs can make some modifications and changes without departing from the spirit and scope of the present invention. modification, so the protection scope of the present invention should be defined by the claims.

Claims (25)

1. An active element array substrate, characterized in that, comprising: a substrate; a plurality of scanning lines configured on the substrate; a plurality of data lines configured on the substrate; A plurality of pixel units configured on the substrate, wherein each pixel unit includes: an active element electrically connected to the scan line and the data line; a first pixel electrode; A second pixel electrode, wherein the first pixel electrode and the second pixel electrode are respectively located on two opposite sides of one of the scanning lines, and are electrically connected to the active element; a third pixel electrode located above the active device and electrically insulated from the active device; and A plurality of connection lines are arranged on the substrate. In the pixel units arranged in the same row, each third pixel electrode is electrically connected to the second pixel electrode controlled by the previous scan line through the corresponding connection line, Each first pixel electrode is surrounded by two connection lines, a second pixel electrode and a third pixel electrode, and each third pixel electrode is located between the second pixel electrode and the first pixel electrode. 2. The active device array substrate according to claim 1, wherein in the same pixel unit, the voltage polarity of the first pixel electrode is the same as the voltage polarity of the second pixel electrode, and the The voltage polarity of the third pixel electrode is opposite to that of the first pixel electrode. 3 . The active device array substrate according to claim 1 , wherein the first pixel electrode, the second pixel electrode, the third pixel electrode and the connection lines belong to the same layer of electrode patterns. 4 . 4 . The active device array substrate according to claim 1 , wherein in each pixel unit, the total area of the first pixel electrode and the second pixel electrode is equal to the area of the third pixel electrode. 5 . The active device array substrate according to claim 1 , wherein, in each pixel unit, the total area of the first pixel electrode and the second pixel electrode is larger than the area of the third pixel electrode. 6 . The active device array substrate according to claim 1 , further comprising a multi-layer reflective layer respectively disposed on corresponding third pixel electrodes. 7 . 7. The active device array substrate according to claim 1, wherein the active device comprises an amorphous silicon thin film transistor or a polysilicon thin film transistor. 8. A liquid crystal display panel, characterized in that, comprising: An active element array substrate, comprising: a substrate; a plurality of scanning lines configured on the substrate; a plurality of data lines configured on the substrate; A plurality of pixel units configured on the substrate, wherein each pixel unit includes: an active element electrically connected to the scan line and the data line; a first pixel electrode; A second pixel electrode, wherein the first pixel electrode and the second pixel electrode are respectively located on two opposite sides of one of the scanning lines, and are electrically connected to the active element; a third pixel electrode located above the active element and electrically insulated from the active element; A plurality of connection lines are arranged on the substrate. In the pixel units arranged in the same row, each third pixel electrode is electrically connected to the second pixel electrode controlled by the previous scan line through the corresponding connection line, Wherein each first pixel electrode is surrounded by two connection lines, a second pixel electrode and a third pixel electrode, and each third pixel electrode is located between the second pixel electrode and the first pixel electrode; a pair of facing substrates, located on the active element array substrate; and A liquid crystal layer is disposed between the active element array substrate and the opposite substrate. 9. The liquid crystal display panel according to claim 8, wherein in the same pixel unit, the voltage polarity of the first pixel electrode is the same as the voltage polarity of the second pixel electrode, and the The voltage polarity of the third pixel electrode is opposite to that of the first pixel electrode. 10. The liquid crystal display panel according to claim 8, wherein in each pixel unit, the first pixel electrode, the second pixel electrode, the third pixel electrode and the connecting line belong to the same layer electrode pattern. 11. The liquid crystal display panel according to claim 8, further comprising a multi-layer reflective layer respectively disposed on each corresponding third pixel electrode. 12. The liquid crystal display panel according to claim 11, wherein in each pixel unit, the distance between the opposite substrate and the first pixel electrode and the second pixel electrode is a first The distance between the opposite substrate and the third pixel electrode is a second distance, and the first distance is twice the second distance. 13. The liquid crystal display panel as claimed in claim 8, wherein the active device comprises an amorphous silicon thin film transistor or a polysilicon thin film transistor. 14. An active element array substrate, comprising: a substrate; a plurality of scanning lines configured on the substrate; a plurality of data lines configured on the substrate; A plurality of pixel units are arranged on the substrate and are electrically connected to corresponding scanning lines and data lines, wherein each pixel unit includes: an active element electrically connected to the scan line and the data line; A pixel electrode electrically connected to the active element, wherein the pixel electrode has a first electrode portion located above the active element and a second electrode portion electrically connected to the first electrode portion, and There is a slit between the second electrode part and the first electrode part; and A plurality of conductive patterns, each conductive pattern has a main body and an extension, the main body is respectively located on each first electrode, and is electrically connected with the corresponding first electrode, wherein the extension is from the The main body part extends toward the direction of the pixel electrode controlled by the next-level scan line, and extends into the corresponding slit, and each conductor pattern is electrically insulated from the pixel electrode controlled by the next-level scan line, and each second electrode part It is located between the two main parts and between the two extension parts. 15. The active device array substrate according to claim 14, wherein among the pixel electrodes arranged in the same row, the voltage polarity of each pixel electrode is the same as that of the pixel electrodes controlled by the previous and subsequent scan lines. The voltage polarity is reversed. 16 . The active device array substrate according to claim 14 , wherein the main body portion and the extension portion belong to the same layer of conductor patterns. 17. The active device array substrate according to claim 14, wherein the first electrode part and the second electrode part belong to the same layer of electrode patterns. 18 . The active device array substrate according to claim 14 , wherein the pixel electrode and the conductive pattern belong to the same layer of transparent conductive pattern. 19. The active device array substrate according to claim 14, wherein the active device comprises an amorphous silicon thin film transistor or a polysilicon thin film transistor. 20. A liquid crystal display panel, characterized in that it comprises: An active element array substrate, comprising: a substrate; a plurality of scanning lines configured on the substrate; a plurality of data lines configured on the substrate; A plurality of pixel units are arranged on the substrate and are electrically connected to corresponding scanning lines and data lines, wherein each pixel unit includes: an active element electrically connected to the scan line and the data line; A pixel electrode electrically connected to the active element, wherein the pixel electrode has a first electrode portion located above the active element and a second electrode portion electrically connected to the first electrode portion, and There is a slit between the second electrode part and the first electrode part; and A plurality of conductor patterns have a main body and an extension, the main body is respectively located on each of the first electrode parts, and is electrically connected with the corresponding first electrode part, wherein the extension part is separated from the main body The portion extends toward the direction of the pixel electrode controlled by the next-level scan line, and extends into the corresponding slit, and each conductor pattern is electrically insulated from the pixel electrode controlled by the next-level scan line, and each of the second electrodes The part is located between the two main parts and between the two extension parts; a pair of facing substrates, located on the active element array substrate; and A liquid crystal layer is disposed between the active element array substrate and the opposite substrate. 21. The liquid crystal display panel according to claim 20, wherein among the pixel electrodes arranged in the same row, the voltage polarity of each pixel electrode is the same as that of the pixel electrodes controlled by the previous and subsequent scan lines. The voltage polarity is reversed. 22. The liquid crystal display panel as claimed in claim 20, wherein the main body, a first extension and a second extension belong to the same layer of conductor patterns. 23. The liquid crystal display panel according to claim 20, wherein the first electrode part and the second electrode part belong to the same layer of electrode patterns. 24. The liquid crystal display panel according to claim 20, wherein the pixel electrode and the conductive pattern belong to the same layer of transparent conductive pattern. 25. The liquid crystal display panel as claimed in claim 20, wherein the active device comprises an amorphous silicon thin film transistor or a polysilicon thin film transistor.

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