WO2013166815A1

WO2013166815A1 - Array substrate, liquid crystal panel, and display device

Info

Publication number: WO2013166815A1
Application number: PCT/CN2012/084579
Authority: WO
Inventors: 王宝强; 廖燕平
Original assignee: 京东方科技集团股份有限公司; 北京京东方显示技术有限公司
Priority date: 2012-05-11
Filing date: 2012-11-14
Publication date: 2013-11-14
Also published as: CN102662286B; CN102662286A

Abstract

Provided are an array substrate, a liquid crystal panel, and a display device. The array substrate comprises: a substrate, provided with sub pixels in matrix arrangement; and a gate line (1) and a data line (2) that are formed on the substrate. The gate line (1) extends along a row direction of the sub pixels in matrix arrangement, and is disposed in the middle of each row of sub pixels, and the gate line (1) divides each sub pixel into an upper sub pixel (3) and a lower sub pixel (4). The data line (2) extends along a column direction of the sub pixels in matrix arrangement, and is disposed between adjacent columns of sub pixels. A first thin film transistor (5) and a second thin film transistor (6) are formed at an intersection of the gate line (1) and the data line (2). In the above manner, the upper sub pixel (3) and the lower sub pixel (4) of each sub pixel can display different data signals, so as to improve the display precision of a liquid crystal display and enable a displayed image to be more delicate.

Description

Array substrate, liquid crystal panel, and display device

Embodiments of the present invention relate to an array substrate and a liquid crystal panel and display device using the array substrate. Background technique

Liquid crystal display is a commonly used flat panel display, in which Thin Film Transistor Liquid Crystal Display (TFT-LCD) is light, thin and small, and has low power consumption, no radiation and relatively low manufacturing cost. The lower advantage currently dominates the field of flat panel display. TFT-LCDs are ideal for desktop computers, palmtop computers, personal digital assistants (PDAs), cellular phones, televisions, and a variety of office automation and audiovisual devices. A liquid crystal display panel of a conventional thin film transistor liquid crystal generally includes a thin film transistor (TFT) array substrate, a color filter substrate, and a liquid crystal. The liquid crystal is filled between the TFT array substrate and the color filter substrate. The TFT array substrate is an important component of the TFT-LCD. At present, most array substrates include a substrate, a gate line, and a data line. The intersection of the gate line and the data line forms a sub-pixel region, that is, the gate line is disposed in two rows of sub-pixels. The data line is placed between two columns of sub-pixels. With the improvement of display accuracy requirements, how to improve the display accuracy of liquid crystal displays has become an important research direction in the field of liquid crystal display. Summary of the invention

An embodiment of the present invention provides an array substrate, including: a substrate on which matrix sub-pixels are arranged; and gate lines and data lines formed on the substrate, wherein the gate lines are arranged in a matrix The sub-pixels extend in the row direction and are disposed in the middle of each row of sub-pixels, and the gate lines divide each sub-pixel into upper sub-pixels and lower sub-pixels, and the data lines are arranged in a matrix of sub-pixel columns a direction extending and disposed between adjacent sub-pixel columns, wherein a first thin film transistor and a second thin film transistor are formed at a intersection of the gate line and the data line, the first thin film transistor and the second A thin film transistor provides driving signals to the upper sub-pixel and the lower sub-pixel, respectively.

Another embodiment of the present invention provides a liquid crystal panel including a color filter substrate, a liquid crystal layer, and An array substrate according to any of the embodiments of the present invention.

Still another embodiment of the present invention provides a display device including a liquid crystal panel according to any of the embodiments of the present invention. DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below. It is obvious that the drawings in the following description relate only to some embodiments of the present invention, and are not intended to limit the present invention. .

1 is a schematic structural diagram of a sub-pixel according to an embodiment of the present invention;

2 is a schematic diagram of driving of an array substrate according to an embodiment of the present invention;

3 is a schematic diagram showing three primary colors of an array substrate according to an embodiment of the present invention;

4 is a schematic diagram of a color filter matched with an array substrate in an embodiment of the present invention. detailed description

The technical solutions of the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings of the embodiments of the present invention. It is apparent that the described embodiments are part of the embodiments of the invention, rather than all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the described embodiments of the present invention without departing from the scope of the invention are within the scope of the invention.

Embodiments of the present invention provide an array substrate, a liquid crystal panel, and a display device, which can improve display accuracy of a liquid crystal display.

The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

This embodiment provides an array substrate, and FIG. 1 is a detailed structure of one sub-pixel in the array substrate. For ease of understanding, by way of example, the sub-pixel has an aspect ratio of 1:3. The array substrate of the present embodiment includes a substrate and gate lines 1 and data lines 2 formed on the substrate. For example, sub-pixels arranged in a matrix are formed on a substrate. Different from the prior art, the array substrate of the embodiment does not have the gate line disposed between two rows of sub-pixels, but the gate line 1 is disposed in the middle of each row of sub-pixels, and the gate line 1 will be each sub-pixel. It is divided into an upper sub-pixel 3 and a lower sub-pixel 4. For example, the gate lines 1 extend in the row direction of the sub-pixels, and the data lines extend in the column direction of the sub-pixels. Exemplarily, after the separation, the aspect ratio of the upper sub-pixel 3 and the lower sub-pixel 4 are both 2:3, and of course other aspect ratios, the protection of the present invention The scope of protection is not limited to this. A first TFT 5 and a second TFT 6 are formed at the intersection of the gate line 1 and the data line 2, and the first TFT 5 and the second TFT 6 are respectively used to provide driving signals to the upper sub-pixel 3 and the lower sub-pixel 4. That is, the first TFT 5 is connected to the upper sub-pixel 3, and the second TFT 6 is connected to the lower sub-pixel 4. In the array substrate of the embodiment, the Nth column data line 2 is respectively connected to the upper sub-pixel of the Nth column sub-pixel and the lower sub-pixel of the N+1 column sub-pixel, and provides a data signal, where N is positive Integer. That is, the lower sub-pixel 4 of the sub-pixel shown in FIG. 1 and the upper sub-pixel of the sub-pixel on the left side thereof are simultaneously connected to the data line 2 on the left side through the TFT, and the sub-pixel 3 on the lower side and the sub-pixel on the right side. The pixels are simultaneously connected to the data line on the right side through the TFT, and the same data signal is displayed through the data line.

For example, an upper pixel electrode and a lower pixel electrode are respectively disposed in the upper sub-pixel and the lower sub-pixel of each sub-pixel. For example, the upper pixel electrode of the Nth column sub-pixel is connected to the drain of the first thin film transistor whose source is connected to the Nth column data line, and the lower pixel electrode of the N+1th column sub-pixel is connected to the source and the Nth column The drain of the second thin film transistor to which the data line is connected, where N is a positive integer.

Here, the driving signals are respectively supplied to the upper sub-pixel 3 and the lower sub-pixel 4 by using the first TFT 5 and the second TFT 6 to mean that the gate of the TFT is connected to the corresponding gate line, and the source thereof is connected to the corresponding data line. The drain is connected to the corresponding upper or lower pixel electrode; when the switching signal applied by the TFT through the corresponding gate line is turned on, the driving signal of the corresponding data line can be transmitted to the corresponding upper or lower pixel electrode through the TFT.

For example, the gate of the first thin film transistor connected to the upper pixel electrode of each sub-pixel and the gate of the second thin film transistor connected to the lower pixel electrode of the sub-pixel are both connected to the gate line disposed in the middle of the corresponding sub-pixel row connection.

For example, as shown in Fig. 1, the first TFT 5 and the second TFT 6 may be disposed on both sides of the corresponding data line.

In the above manner, the upper sub-pixel and the lower sub-pixel of each sub-pixel can display different data signals, thereby improving the display precision of the liquid crystal display and making the displayed picture more delicate.

As shown in FIG. 2, the gate line 1 is connected to the gate driver, and the data line 2 is connected to the source driver. The following is a detailed description of the driving process of the array substrate of the present invention by taking the column flip driving mode as an example: At time T1, the gate driver provides a driving signal for the first row of sub-pixels, and the source driver provides a positive data signal for the Nth column of data lines. , providing a negative data signal for the N+1th column data line, because the Nth column data line and the N sub-pixel of the Nth column sub-pixel and the N+1 column sub-pixel sub-pixel The primes are connected so that the upper and lower subpixels of the first row of subpixels are opposite in polarity of the data signal. When the upper sub-pixel displays a positive data signal, the lower sub-pixel displays a negative data signal. It can be seen that the array substrate of the present invention can realize the effect of the dot inversion driving mode when the column inversion driving mode is used.

As shown in FIG. 3, each set of three primary color sub-pixels, that is, a red sub-pixel, a green sub-pixel, and a blue sub-pixel, together perform one pixel display. In the present embodiment, the upper sub-pixel and the lower sub-pixel in the same sub-pixel respectively display data signals of different colors. From the perspective of the entire row of pixels, the color display of the lower sub-pixel is sequentially shifted from the upper sub-pixel. In order to match the data display of the sub-pixels of the array substrate, the color area portion of the color filter substrate is also changed accordingly. As shown in Fig. 4, the color film substrate corresponds to the upper sub-pixel region of the Nth column sub-pixel, and the color is applied to the region corresponding to the lower sub-pixel region corresponding to the N+1th column sub-pixel.

Further, the array substrate of the embodiment further includes a common electrode line disposed between the upper sub-pixel 3 and the lower sub-pixel 4, parallel to the gate line 1, to prevent light leakage of the backlight.

For example, in the present embodiment, the heights of the upper sub-pixel 3 and the lower sub-pixel 4 in the column direction are the same. In the array substrate of the present invention, the lower sub-pixel of the first column of sub-pixels and the upper sub-pixel of the last column of sub-pixels have no data lines to supply data signals, so the lower sub-pixel and the last column of sub-pixels of the first column of sub-pixels are The upper sub-pixel is designed as a dummy pixel 7 to ensure the integrity of the array substrate. The virtual pixels here mean that these pixels are not used for actual image display, and for example, drive signals may not be applied to these pixels.

In the array substrate of the embodiment of the present invention, each sub-pixel is divided into an upper sub-pixel and a lower sub-pixel by using a gate line, and a first TFT and a second TFT are formed at intersections of the gate line and the data line, respectively for being used for The sub-pixel and the lower sub-pixel provide driving signals, so that the upper sub-pixel and the lower sub-pixel can display different signal information under the control of the data line, and the color film substrate matched with the array substrate cooperates, thereby improving the display of the liquid crystal display. Accuracy makes the display of the picture more delicate.

The embodiment further provides a liquid crystal panel including a color filter substrate, a liquid crystal layer, and the above array substrate.

The structure and working principle of the array substrate are the same as those in the above embodiments, and are not described herein again.

Matching with the array substrate, the color film substrate corresponds to the upper sub-pixel region of the Nth column sub-pixel, and the color corresponding to the region corresponding to the lower sub-pixel of the N+1 column sub-pixel is the same (ie, has the same color Color filter) to match the data display of the sub-pixels of the array substrate. Although only shown in Figure 4 Three colors of red (R), green (G), and blue (B) are shown, however, embodiments according to the present invention are not limited thereto. The color filter in the color filter substrate according to an embodiment of the present invention may have any other suitable color.

The embodiment further provides a display device comprising any of the above liquid crystal panels, and the display device may be a product or component having any display function such as a liquid crystal display, a liquid crystal television, a digital photo frame, a mobile phone, a tablet computer or the like.

At least the following structure can be provided according to an embodiment of the present invention:

(1) An array substrate comprising:

a substrate on which matrix sub-pixels are arranged;

a gate line and a data line formed on the substrate,

Wherein the gate lines extend along a row direction of the matrix-arranged sub-pixels and are disposed between each row of sub-pixels, and the gate lines divide each sub-pixel into an upper sub-pixel and a lower sub-pixel, the data line Extending along a column direction of the matrix-arranged sub-pixels, and disposed between adjacent sub-pixel columns, wherein a first thin film transistor and a second thin film transistor are formed at intersections of the gate lines and the data lines, The first thin film transistor and the second thin film transistor respectively supply driving signals to the upper sub-pixel and the lower sub-pixel.

(2) The array substrate according to (1), wherein the Nth column data line is connected to the upper sub-pixel of the Nth column sub-pixel through the first thin film transistor, respectively, and passes through the second thin film transistor and the The lower sub-pixels of the N+1th column sub-pixel are connected, where N is a positive integer.

(3) The array substrate according to (1) or (2), wherein the array substrate further comprises a common electrode line, the common electrode line being disposed between the upper sub-pixel and the lower sub-pixel.

The array substrate according to any one of (1), wherein the upper sub-pixel and the lower sub-pixel have the same height in the column direction.

The array substrate according to any one of (1), wherein the lower sub-pixel of the first column of sub-pixels and the upper sub-pixel of the last column of sub-pixels are virtual pixels.

The array substrate according to any one of (1), wherein an upper pixel electrode and a lower pixel electrode are respectively disposed in an upper sub-pixel and a lower sub-pixel of each sub-pixel, and an Nth column The upper pixel electrode of the sub-pixel is connected to the drain of the first thin film transistor whose source is connected to the data line of the Nth column, and the lower pixel electrode of the N+1th column sub-pixel is connected to the source connected to the data line of the Nth column. The drain of the two thin film transistors, where N is a positive integer. (7) The array substrate according to (6), wherein a gate of the first thin film transistor connected to the upper pixel electrode of each sub-pixel and a gate of the second thin film transistor connected to the lower pixel electrode of the sub-pixel They are all connected to a gate line disposed in the middle of the corresponding sub-pixel row.

The array substrate according to any one of (1), wherein the first thin film transistor and the second thin film transistor are respectively disposed on both sides of the data line.

(9) A liquid crystal panel comprising a color filter substrate, a liquid crystal layer, and the array substrate according to any one of (1) to (8).

(10) The liquid crystal panel according to (9), wherein in the region of the color film substrate corresponding to each sub-pixel, the color filter substrate corresponds to an upper sub-pixel region of the Nth column sub-pixel, and the corresponding The regions of the lower sub-pixels of the N+1 column sub-pixels have color filters of the same color, where N is a positive integer.

(11) The liquid crystal panel according to (9) or (10), wherein the color filter substrate has color filters of different colors corresponding to regions of the upper sub-pixel and the lower sub-pixel of each sub-pixel, respectively.

(12) A display device comprising the liquid crystal panel according to any one of (9) to (11). The above is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. The scope of the present invention is defined by the appended claims.

Claims

claims

1. An array substrate, including:

a substrate on which sub-pixels arranged in a matrix are arranged; and

gate lines and data lines formed on the substrate,

The gate line extends along the row direction of the sub-pixels arranged in a matrix and is disposed in the middle of each row of sub-pixels, and the gate line separates each sub-pixel into an upper sub-pixel and a lower sub-pixel, and the data line extending along the column direction of the sub-pixels arranged in a matrix and arranged between adjacent sub-pixel columns, and wherein a first thin film transistor and a second thin film transistor are formed at the intersection of the gate line and the data line, The first thin film transistor and the second thin film transistor provide driving signals to the upper sub-pixel and the lower sub-pixel respectively.

2. The array substrate according to claim 1, wherein the N-th column data line is connected to the upper sub-pixel of the N-th column sub-pixel through the first thin film transistor, and is connected to the N-th column sub-pixel through the second thin film transistor. The lower sub-pixels of the N+1th column of sub-pixels are connected, where N is a positive integer.

3. The array substrate according to claim 1 or 2, wherein the array substrate further includes a common electrode line, and the common electrode line is disposed between the upper sub-pixel and the lower sub-pixel.

4. The array substrate according to any one of claims 1 to 3, wherein the upper sub-pixel and the lower sub-pixel have the same height along the column direction.

5. The array substrate according to any one of claims 1 to 4, wherein the lower sub-pixels of the first column of sub-pixels and the upper sub-pixels of the last column of sub-pixels are both virtual pixels.

6. The array substrate according to any one of claims 1 to 5, wherein an upper pixel electrode and a lower pixel electrode are respectively provided in the upper sub-pixel and lower sub-pixel of each sub-pixel, and the N-th column of sub-pixels The upper pixel electrode is connected to the drain of the first thin film transistor whose source is connected to the Nth column data line, and the lower pixel electrode of the N+1 column sub-pixel is connected to the second thin film transistor whose source is connected to the Nth column data line. The drain of , where N is a positive integer.

7. The array substrate according to claim 6, wherein the gate electrode of the first thin film transistor connected to the upper pixel electrode of each sub-pixel and the gate electrode of the second thin film transistor connected to the lower pixel electrode of the sub-pixel are both Connected to the gate line arranged in the middle of the corresponding sub-pixel row.

8. The array substrate according to any one of claims 1 to 7, wherein the first thin film transistor and the second thin film transistor are respectively disposed on both sides of the data line.

9. A liquid crystal panel, including a color filter substrate, a liquid crystal layer and the array substrate according to any one of claims 1-8.

10. The liquid crystal panel according to claim 9, wherein in the area of the color filter substrate corresponding to each sub-pixel, the color filter substrate corresponds to the area of the upper sub-pixel of the N-th column of sub-pixels, and the area corresponding to the N-th column of sub-pixels. The area of the lower sub-pixel of the +1 column sub-pixel has a color filter of the same color, where N is a positive integer.

11. The liquid crystal panel according to claim 9 or 10, wherein the color filter substrate has color filters of different colors corresponding to the upper sub-pixel and lower sub-pixel areas of each sub-pixel.

12. A display device, comprising the liquid crystal panel according to any one of claims 9-11.