CN111679516A - Array substrate and liquid crystal display panel - Google Patents

Abstract

The application provides an array substrate and a liquid crystal display panel, wherein the array substrate comprises a substrate, a thin film transistor layer positioned on the substrate, and a pixel electrode positioned on the thin film transistor layer; the array substrate comprises a plurality of sub-pixel areas, wherein each sub-pixel area comprises a main area and a sub-area; the pixel electrode is arranged corresponding to the main area and the sub area, and comprises a first main electrode and a first branch electrode corresponding to the main area, and comprises a second main electrode and a second branch electrode corresponding to the sub area; the first branch electrode is electrically connected with the first main electrode at a first preset angle, the second branch electrode is electrically connected with the second main electrode at a second preset angle, and the first preset angle is different from the second preset angle. The angle of the pixel electrode is controlled, so that the number of thin film transistors in the prior art is reduced, the aperture opening ratio and the transmittance of the pixel are increased, and the effect of wide viewing angle of the liquid crystal display panel is achieved.

Description

Array substrate and liquid crystal display panel

technical field

The present application relates to the field of display technology, and in particular, to an array substrate and a liquid crystal display panel.

Background technique

Liquid crystal display panels are usually composed of a color filter substrate, a thin film transistor array substrate, and a liquid crystal layer disposed between the two substrates, including twisted nematic (TN) mode, electronically controlled birefringence (ECB) mode, vertical alignment (VA) mode Among them, the VA mode is a common display mode with the advantages of high contrast ratio, wide viewing angle, and no need for friction alignment. However, since the VA mode uses a vertically rotating liquid crystal, the difference in birefringence of the liquid crystal molecules is relatively large, resulting in a serious color shift problem under a large viewing angle.

At present, in order to improve the viewing angle performance of the panel, the PSVA pixel design of 3T-8domain (8 domains and 3 transistors) is usually used. However, in 3T-8domain (8 domains and 3 transistors), it is necessary to use 3 TFTs to drive the display panel of the VA pixel structure. , Although this design can increase the viewing angle, it will lose the aperture ratio, and at the same time, the backlight panel needs to provide higher brightness, resulting in an increase in power consumption.

SUMMARY OF THE INVENTION

The present application provides an array substrate and a display panel, which are used to increase the driving voltage in the sub-region of the pixel electrode, and at the same time increase the pixel aperture ratio and transmittance, so as to reduce the power consumption of the panel.

In order to realize the above-mentioned functions, the technical solutions provided by this application are as follows:

An array substrate, comprising a substrate, a thin film transistor layer on the substrate, and a pixel electrode on the thin film transistor layer;

The array substrate includes a plurality of sub-pixel regions, and each of the sub-pixel regions includes a main region and a sub-region;

The pixel electrode is disposed corresponding to the main area and the sub area, the pixel electrode includes a first trunk electrode and a first branch electrode corresponding to the main area, and includes a second trunk electrode corresponding to the sub area and a first branch electrode. the second branch electrode;

Wherein, the first branch electrode and the first trunk electrode are electrically connected at a first preset angle, the second branch electrode and the second trunk electrode are electrically connected at a second preset angle, and the first A predetermined angle is different from the second predetermined angle.

In the array substrate of the present application, the second preset angle is smaller than the first preset angle.

In the array substrate of the present application, a thin film transistor is disposed in each of the sub-pixel regions, the thin film transistor is located between the main region and the sub region, and the drains of the thin film transistors are respectively connected to the main region the pixel electrode and the pixel electrode connected to the sub-region.

In the array substrate of the present application, the first trunk electrode includes a first sub-trunk electrode and a second sub-trunk electrode arranged vertically; the two trunk electrodes include a third sub-trunk electrode and a fourth sub-trunk electrode arranged vertically;

The first sub-main electrode and the second sub-main electrode divide the main area into four liquid crystal alignment areas, and the third sub-main electrode and the fourth sub-main electrode divide the sub-area into four liquid crystal alignment areas. Four liquid crystal alignment areas.

In the array substrate of the present application, in the two adjacent liquid crystal alignment regions in the main region, the tilt directions of the first branch electrodes are different; in the two adjacent liquid crystal alignment regions in the secondary region Inside, the inclination directions of the second branch electrodes are different.

In the array substrate of the present application, the first predetermined angle between the corresponding first branch electrodes and the first trunk electrodes in two adjacent sub-pixel regions is the same;

The second preset angle between the corresponding second branch electrodes in two adjacent sub-pixel regions and the second trunk electrode is different, or the corresponding second branches in two adjacent sub-pixel regions The second preset angle between the electrodes and the second trunk electrode is the same.

In the array substrate of the present application, the first predetermined angle between the first branch electrode and the first trunk electrode corresponding to the two adjacent sub-pixel regions is the same as the second branch electrode and the second branch electrode. The second preset angles between the two trunk electrodes are different.

In the array substrate of the present application, the plurality of sub-pixel regions include red sub-pixel regions corresponding to red sub-pixels, green sub-pixel regions corresponding to green sub-pixels, and blue sub-pixel regions corresponding to blue sub-pixels;

The first predetermined angle formed by the first branch electrodes corresponding to the red sub-pixel region, the green sub-pixel region and the blue sub-pixel region respectively and the first trunk electrode is the same;

The second predetermined angle formed by the second branch electrode and the second trunk electrode respectively corresponding to the red sub-pixel region, the green sub-pixel region and the blue sub-pixel region is different, or the The second predetermined angle of the second branch electrode and the second trunk electrode corresponding to the red sub-pixel region, the green sub-pixel region and the blue sub-pixel region is the same. This does not limit.

The present application provides a liquid crystal display panel, comprising any of the above-mentioned array substrate and color filter substrate, a counter substrate disposed opposite to the array substrate, and a liquid crystal display panel located between the array substrate and the counter substrate liquid crystal layer.

In the liquid crystal display panel of the present application, the array substrate includes a plurality of sub-pixel regions, and each of the sub-pixel regions includes a main region and a sub-region; the main region and the sub-region respectively correspond to four liquid crystal alignment regions; wherein, the corresponding The turning angles of the liquid crystals above the two adjacent liquid crystal alignment regions are different.

Beneficial effects: By controlling the angle of the pixel electrode, the present application increases the area of the pixel opening area and the transmittance; reduces the number of thin film transistors in the prior art, so that the leakage in the pixel disappears, and the display panel can maintain a higher voltage At the same time, a DC driving voltage is saved, which can effectively reduce the power consumption of the display panel; and the pixel electrodes in adjacent sub-pixels have different angles, which can make the liquid crystal display panel achieve the effect of wide viewing angle.

Description of drawings

The technical solutions and other beneficial effects of the present application will be apparent through the detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings.

FIG. 1 is a schematic structural diagram of an array substrate provided by the present application;

FIG. 2 is a top view of the pixel area of the array substrate provided by the application;

FIG. 3 is a top view of a pixel region of an array substrate provided by an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", " rear, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc., or The positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it should not be construed as a limitation on this application. In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, features defined as "first", "second" may expressly or implicitly include one or more of said features. In the description of the present application, "plurality" means two or more, unless otherwise expressly and specifically defined.

In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; it can be mechanical connection, electrical connection or can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction of two elements relation. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

In this application, unless otherwise expressly specified and defined, a first feature "on" or "under" a second feature may include direct contact between the first and second features, or may include the first and second features Not directly but through additional features between them. Also, the first feature being "above", "over" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature is "below", "below" and "below" the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature has a lower level than the second feature.

The following disclosure provides many different embodiments or examples for implementing different structures of the present application. To simplify the disclosure of the present application, the components and arrangements of specific examples are described below. Of course, they are only examples and are not intended to limit the application. Furthermore, this application may repeat reference numerals and/or reference letters in different instances for the purpose of simplicity and clarity, and does not in itself indicate a relationship between the various embodiments and/or arrangements discussed. In addition, this application provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

In the prior art, in order to improve the viewing angle performance of the panel, the PSVA pixel design of 3T-8domain (8 domains and 3 transistors) is usually used. However, in the 3T-8domain (8 domains and 3 transistors), it is necessary to use 3 TFTs to drive the VA pixel structure. Although this design can increase the viewing angle, it will lose the aperture ratio. Although the aperture ratio is improved, it has the defect of brightness loss, and requires the backlight to provide higher brightness, resulting in an increase in power consumption. Based on this, the present application provides an array substrate and a liquid crystal display panel, which can solve the above-mentioned defects.

Please refer to FIG. 1 , which is a schematic structural diagram of the array substrate provided in the present application.

The present application provides an array substrate 100 . The array substrate 100 includes a substrate 110 , a thin film transistor layer 120 on the substrate 110 , and a pixel electrode layer 130 on the thin film transistor layer 120 .

Please refer to FIG. 2 , which is a top view of the pixel region of the array substrate provided in the present application.

In this application, the array substrate 100 includes a plurality of sub-pixel regions 140 , and each of the sub-pixel regions 140 includes a main region 1401 and a sub-region 1402 .

In the present application, the pixel electrode 130 is disposed corresponding to the main area 1401 and the sub area 1402 , and the area of the main area 1401 is smaller than that of the sub area 1402 .

In the present application, a thin film transistor 120 is disposed in each of the sub-pixel regions 140, the thin film transistor 120 is located between the main region 1401 and the sub-region 1402, and the drains of the thin film transistors 120 are respectively connected The pixel electrode 130 of the main area 1401 is connected to the pixel electrode 130 of the sub area 1402 .

In this application, the pixel electrode 130 includes a first trunk electrode 131 and a first branch electrode 132 corresponding to the main area 1401 , and includes a second trunk electrode 133 and a second branch electrode 134 corresponding to the sub area 1402 .

In this application, the first trunk electrode 131 includes a first sub-trunk electrode 1311 and a second sub-trunk electrode 1312 that are vertically arranged; the two trunk electrodes 133 include a third sub-trunk electrode 1331 and a fourth sub-trunk electrode 1331 that are vertically arranged Backbone electrode 1332.

In the present application, the first sub-trunk electrode 1311 and the second sub-trunk electrode 1312 are located in the middle area of the main region 1401 ; the third sub-trunk electrode 1331 and the fourth sub-trunk electrode 1332 are located in the middle area of the main region 1401 . The middle area of the secondary area 1402 .

The first sub-trunk electrode 1311 and the second sub-trunk electrode 1312 divide the main region 1401 into four liquid crystal alignment regions, and the third sub-trunk electrode 1331 and the fourth sub-trunk electrode 1332 divide the The sub-region 1402 is divided into four liquid crystal alignment regions.

In the present application, the two first branch electrodes 132 in any one of the liquid crystal alignment regions in the main region 1401 are parallel to each other; The second branch electrodes 134 are parallel to each other.

In the present application, in the two adjacent liquid crystal alignment regions in the main region 1401, the tilt directions of the first branch electrodes 132 are different; in the adjacent two liquid crystal alignment regions in the sub region 1402 In the region, the inclination directions of the second branch electrodes 134 are different.

In the present application, the first branch electrode 132 is electrically connected to the first sub-trunk electrode 1311 or the second sub-trunk electrode 1312 at a first preset angle α, and the second branch electrode 134 is electrically connected to the The third sub-trunk electrode 1331 or the fourth sub-trunk electrode 1332 is electrically connected at a second preset angle β, and the first preset angle α is different from the second preset angle β.

In the present application, the first predetermined angle α between the corresponding first branch electrodes 132 and the first trunk electrodes 131 in two adjacent sub-pixel regions 130 is the same.

The second preset angle β between the second branch electrodes 134 and the second trunk electrodes 133 corresponding to two adjacent sub-pixel regions 130 is different, or the corresponding two adjacent sub-pixel regions 130 are different. The second preset angle β between the second branch electrode 134 and the second trunk electrode 133 is the same, which is not limited in this application.

In the present application, the first predetermined angle α between the first branch electrodes 132 and the first trunk electrodes 131 corresponding to the adjacent two sub-pixel regions 130 is the same as the second branch electrode 134 and the second branch electrode 134 . The second preset angles β between the second trunk electrodes 133 are different.

In the present application, the first branch electrode 132 and the first trunk electrode 131 are electrically connected at a first preset angle α, and the second branch electrode 134 and the second trunk electrode 133 are electrically connected at a second preset angle α. The angle β is electrically connected. By setting the first preset angle α and the second preset angle β to be different, the liquid crystal display panel achieves the effect of a wide viewing angle; at the same time, the application uses a thin film transistor 120 to drive the main area The pixel electrode 130 of 1401 and the pixel electrode 130 of the sub-region 1402 reduce the number of thin film transistors 120 in the prior art, so that the pixel aperture ratio and transmittance increase; The thin film transistor 120 is divided by the voltage, thus saving a DC driving voltage, thereby effectively reducing the power consumption of the liquid crystal display panel.

The technical solutions of the present application will now be described with reference to specific embodiments.

Please refer to FIG. 3 , which is a top view of the pixel region of the array substrate provided by the embodiment of the present application.

In this embodiment, the plurality of sub-pixel regions 130 include red sub-pixel regions 1301 corresponding to red sub-pixels, green sub-pixel regions 1302 corresponding to green sub-pixels, and blue sub-pixel regions 1303 corresponding to blue sub-pixels.

In this embodiment, the first branch electrodes 132 and the first trunk electrodes 131 corresponding to the red sub-pixel region 1301 , the green sub-pixel region 1302 and the blue sub-pixel region 1303 respectively The first preset angle α is the same.

The second predetermined angle formed by the second branch electrodes 134 and the second trunk electrodes 133 corresponding to the red sub-pixel region 1301 , the green sub-pixel region 1302 and the blue sub-pixel region 1303 respectively β is different, or the red sub-pixel region 1301, the green sub-pixel region 1302 and the blue sub-pixel region 1303 correspond to the second branch electrodes 134 and the second trunk electrode 133 respectively. The second preset angle β is the same, which is not limited in this embodiment.

Further, in this embodiment, the second preset angle β is smaller than the first preset angle α.

In this embodiment, the first preset angle α is 10°-45°, and the second preset angle β is 5°-15°.

Further, the first preset angle α is 45°, and the second preset angle β is 30°.

It should be noted that, in this embodiment, the first preset angle α is 45° and the second preset angle β is 30° are only used for illustration, and are not limited here.

In this embodiment, the second preset angle β between the corresponding second branch electrodes 134 and the second trunk electrodes 133 in two adjacent sub-pixel regions 130 is set to be different, thereby compensating for the The viewing angle of the sub-area 1402 in the sub-pixel area 130 achieves the effect of wide viewing angle of the liquid crystal display panel; and by reducing the number of thin film transistors in the prior art, the pixel aperture ratio and transmittance are increased, effectively reducing the display panel energy. consumption.

The present application provides a liquid crystal display panel, the liquid crystal display panel includes the array substrate 100 described in the first embodiment, an opposite substrate disposed opposite to the array substrate 100, and a liquid crystal display panel located between the array substrate and the opposite substrate the liquid crystal layer in between.

In the present application, the array substrate 100 includes a plurality of sub-pixel regions 130, and each of the sub-pixel regions 130 includes a main region 1401 and a sub-region 1402; the main region 1401 and the sub-region 1402 each correspond to four liquid crystal alignment regions .

Wherein, the turning angles of the liquid crystals corresponding to the two adjacent liquid crystal alignment regions are different, so that the liquid crystal display panel can achieve the effect of wide viewing angle.

The application provides an array substrate and a liquid crystal display panel. The array substrate includes a substrate, a thin film transistor layer on the substrate, and a pixel electrode on the thin film transistor layer; the array substrate includes a plurality of sub-pixel regions, and each sub-pixel region includes a main region and a sub-region; the pixel electrode is arranged corresponding to the main region and the sub-region, and the pixel electrode includes a first trunk electrode and a first branch electrode corresponding to the main region, and a second trunk electrode and a second branch electrode corresponding to the sub-region; wherein, the first The branch electrode and the first trunk electrode are electrically connected at a first preset angle, the second branch electrode and the second trunk electrode are electrically connected at a second preset angle, and the first preset angle is different from the second preset angle.

In the present application, by setting the first preset angle between the corresponding first branch electrode and the first trunk electrode in two adjacent sub-pixel regions to be the same, the corresponding The second preset angle between the two branch electrodes and the second trunk electrode is different, and the first preset angle and the second preset angle are different, so as to realize the wide viewing angle of the liquid crystal display panel. At the same time, the present application reduces the number of thin film transistors in the prior art by using one thin film transistor to drive the pixel electrode corresponding to the main area and the pixel electrode corresponding to the sub area in the sub-pixel area, so that the pixel aperture ratio is reduced. , the transmittance is increased; and because the thin film transistor that originally presses the sub-region in the sub-pixel region is reduced, a DC driving voltage is saved, thereby effectively reducing the power consumption of the liquid crystal display panel.

In the above-mentioned embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

The array substrate and the liquid crystal display panel provided by the embodiments of the present application have been introduced in detail above. The principles and implementations of the present application are described with specific examples. The technical solution of the application and its core idea; those of ordinary skill in the art should understand that: it can still make modifications to the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements to some of the technical features; and these modifications or replacements, The essence of the corresponding technical solutions does not deviate from the scope of the technical solutions of the embodiments of the present application.

Claims (10)

1. An array substrate, comprising a substrate, a thin film transistor layer on the substrate, and a pixel electrode on the thin film transistor layer; The array substrate includes a plurality of sub-pixel regions, and each of the sub-pixel regions includes a main region and a sub-region; The pixel electrode is disposed corresponding to the main area and the sub area, the pixel electrode includes a first trunk electrode and a first branch electrode corresponding to the main area, and includes a second trunk electrode corresponding to the sub area and a first branch electrode. the second branch electrode; Wherein, the first branch electrode and the first trunk electrode are electrically connected at a first preset angle, the second branch electrode and the second trunk electrode are electrically connected at a second preset angle, and the first A predetermined angle is different from the second predetermined angle. 2 . The array substrate of claim 1 , wherein the second preset angle is smaller than the first preset angle. 3 . 3 . The array substrate of claim 1 , wherein a thin film transistor is disposed in each sub-pixel region, the thin film transistor is located between the main region and the sub region, and the thin film transistor The drain electrodes are respectively connected to the pixel electrodes of the main region and the pixel electrodes of the sub-regions. 4 . The array substrate according to claim 1 , wherein the first trunk electrode comprises a first sub-trunk electrode and a second sub-trunk electrode arranged vertically; the two trunk electrodes comprise a third sub-trunk electrode arranged vertically. 5 . the trunk electrode and the fourth sub-trunk electrode; The first sub-main electrode and the second sub-main electrode divide the main area into four liquid crystal alignment areas, and the third sub-main electrode and the fourth sub-main electrode divide the sub-area into four liquid crystal alignment areas. Four liquid crystal alignment areas. 5 . The array substrate according to claim 4 , wherein in two adjacent liquid crystal alignment regions in the main region, the first branch electrodes have different inclination directions; In the two adjacent liquid crystal alignment regions, the inclination directions of the second branch electrodes are different. 6 . The array substrate of claim 1 , wherein the first predetermined angle between the corresponding first branch electrodes and the first trunk electrodes in two adjacent sub-pixel regions is the same; 6 . The second preset angle between the corresponding second branch electrodes in two adjacent sub-pixel regions and the second trunk electrode is different, or the corresponding second branches in two adjacent sub-pixel regions The second preset angle between the electrodes and the second trunk electrode is the same. 7 . The array substrate according to claim 6 , wherein the first predetermined angle between the corresponding first branch electrodes and the first trunk electrodes in two adjacent sub-pixel regions is the same as the predetermined angle. 8 . The second preset angle between the second branch electrode and the second trunk electrode is different. 8 . The array substrate of claim 1 , wherein the plurality of sub-pixel regions comprises a red sub-pixel region corresponding to a red sub-pixel, a green sub-pixel region corresponding to a green sub-pixel, and a green sub-pixel region corresponding to the blue sub-pixel. blue sub-pixel area; The first predetermined angle formed by the first branch electrodes corresponding to the red sub-pixel region, the green sub-pixel region and the blue sub-pixel region respectively and the first trunk electrode is the same; The second predetermined angle formed by the second branch electrode and the second trunk electrode respectively corresponding to the red sub-pixel region, the green sub-pixel region and the blue sub-pixel region is different, or the The second predetermined angle formed by the second branch electrodes corresponding to the red sub-pixel region, the green sub-pixel region and the blue sub-pixel region respectively and the second trunk electrode is the same. 9. A liquid crystal display panel, characterized in that the liquid crystal display comprises the array substrate according to any one of claims 1-8, a counter substrate disposed opposite to the array substrate, and a substrate located between the array substrate and the array substrate. the liquid crystal layer between the opposing substrates. 10 . The liquid crystal display panel of claim 9 , wherein the array substrate comprises a plurality of sub-pixel regions, and each of the sub-pixel regions comprises a main region and a sub-region; the main region and the sub-region correspond to each other. 11 . Four liquid crystal alignment regions; wherein, the turning angles of the liquid crystals above the corresponding two adjacent liquid crystal alignment regions are different.

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