Liquid crystal display panel and array substrate

• US 9,547,210 B2
• Filed: 09/02/2014
• Issued: 01/17/2017
• Est. Priority Date: 08/21/2014
• Status: Active Grant

• Current Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd. (TCL Technology Group Corp.)
• Original Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd. (TCL Technology Group Corp.)
• Inventors: Wang, Jinjie
• Primary Examiner(s): Nguyen, Sang V
• Application Number:
  US14/385,997
• Publication Number:
  US 20160238914A1
• Time in Patent Office: 868 Days
• US Class Current: 1/1
• CPC Class Codes: G02F 1/134309 characterised by their geometrical arrangement
• CPC Class Codes: G02F 1/134345 Subdivided pixels, e.g. for grey scale or redundancy
• CPC Class Codes: G02F 1/13624 having more than one switching element per pixel
• CPC Class Codes: G02F 1/136286 Wiring, e.g. gate line, drain line
• CPC Class Codes: G02F 1/1368 in which the switching element is a three-electrode device G02F1/136277 takes precedence

Abstract

This invention discloses a liquid crystal display panel and an array substrate. The liquid crystal display device comprises a first substrate, a second substrate, a liquid crystal layer sandwiched between the first substrate and the second substrate. There are a plurality of scan lines and data lines on the first substrate. The liquid crystal display panel are divided into multiple pixel areas by the scan lines and data lines. The area of the main pixel area is getting larger and the area of the sub-pixel area is getting smaller from a edge to a center of the liquid crystal display panel, and voltage applied on the sub-pixel area when displaying is smaller than the main pixel area. This design enhances the brightness uniformity of the liquid crystal display panel and eliminate the whiting issues in the side edges.

Claims

1. A liquid crystal display panel, comprising:

a first substrate, comprising;

a plurality of parallel scan lines disposed on the first substrate; and

a plurality of parallel data lines disposed on the first substrate, wherein the plurality of scan lines are crossed by the plurality of data lines and the first substrate is divided into multiple pixel areas, each pixel area of the multiple pixel areas having a strip-shape of a longitudinal length equal to each other;

a second substrate, disposed opposite to the first substrate; and

a liquid crystal layer sandwiched by the first substrate and the second substrate, wherein each pixel area of the multiple pixel areas comprises a main pixel area and a sub-pixel area,

the main pixel area and the sub-pixel area having a strip-shape of a corresponding width equal to each other, the main pixel area and the sub-pixel area and the sub-pixel area combined to be the longitudinal length of each pixel area of the multiple pixel areas,

a first longitudinal area of the main pixel area gradually increased from a side edge to a center of the liquid crystal display panel and a second longitudinal area of the sub-pixel area gradually decreased from the side edge to the center of the liquid crystal display panel, and a voltage applied on the sub-pixel area when displaying is smaller than the main pixel area,

wherein the area of the main pixel area and the sub-pixel area is distributed symmetrically according to a line between middle points of an upper edge and a lower edge of the liquid crystal display panel, and the area of the main pixel area and the sub-pixel area is constant from the upper edge to the lower edge of the liquid crystal display panel.

2. The display panel according to claim 1, wherein the main pixel area comprises:

a main switch unit, disposed on the first substrate, comprising;

a first gate, electrically connected to a corresponding scan line;

a first source, electrically connected to a corresponding data line; and

a first drain; and

a main pixel electrode electrically connected to the first drain; and

wherein the sub pixel area comprises;

a sub-switch unit, disposed on the first substrate, comprising;

a second gate, electrically connected to the corresponding scan line;

a second source, electrically connected to the corresponding data line; and

a second drain; and

a sub-pixel electrode electrically connected to the second drain, wherein the area of the main pixel area is getting larger and the area of the sub-pixel area is getting smaller from the edge to the center of the liquid crystal display panel.

3. The display panel according to claim 2, the pixel area further comprises an electron sharing unit, electrically connected to the sub-pixel electrode for sharing the electrons on the sub-pixel electrode to make the voltage on the sub-pixel electrode is lower than the main pixel electrode.

4. The display panel according to claim 3, the electron sharing unit comprising:

a sharing switch unit, comprising;

a third gate, electrically connected a neighboring scan line which is neighboring to the corresponding scan line;

a third source, electrically connected to the sub-pixel electrode; and

a third drain; and

a sharing capacity, electrically connected to the third drain, wherein the sharing switch turns ON for sharing the electron on the sub-pixel electrode to make the voltage on the sub-pixel electrode is lower than the main pixel electrode.

5. The display panel according to claim 4, wherein the main switch unit, the sub-switch unit and the sharing switch unit are thin-film transistors.

6. An array substrate, comprising:

a plurality of parallel scan lines; and

a plurality of parallel data lines, disposed across the plurality of scan lines, wherein the array substrate is divided into a plurality of pixel areas by the plurality of scan lines and the plurality of data lines, each pixel area of the plurality of pixel areas having a strip-shape of a longitudinal length equal to each other, each pixel area of the plurality of pixel areas comprising a main pixel area and a sub-pixel area,

the main pixel area and the sub-pixel having a strip-shape of a corresponding width equal to each other, the main pixel area and the sub-pixel area combined to be the longitudinal length of each pixel area of the multiple pixel areas,

a first longitudinal area of the main pixel area gradually increased from a side edge to a center of the array substrate and a second longitudinal area of the sub-pixel area is getting smaller gradually decreased from the side edge to the center of the array substrate.

7. The array substrate according to claim 6, wherein the main pixel area comprises:

a main switch unit, disposed on the first substrate, comprising;

a first gate, electrically connected to a corresponding scan line;

a first source, electrically connected to a corresponding data line; and

a first drain; and

a main pixel electrode electrically connected to the first drain; and

wherein the sub pixel area comprises;

a sub-switch unit, disposed on the first substrate, comprising;

a second gate, electrically connected to the corresponding scan line;

a second source, electrically connected to the corresponding data line; and

a second drain; and

a sub-pixel electrode electrically connected to the second drain, wherein the area of the main pixel area is getting larger and the area of the sub-pixel area is getting smaller from the edge to the center of the array substrate.

8. The array substrate according to claim 7, the pixel area further comprises an electron sharing unit, comprising:

a sharing switch unit, comprising;

a third gate, electrically connected a neighboring scan line which is neighboring to the corresponding scan line;

a third source, electrically connected to the sub-pixel electrode; and

a third drain; and

a sharing capacity, electrically connected to the third drain, wherein the sharing switch turns ON for sharing the electron on the sub-pixel electrode to make the voltage on the sub-pixel electrode is lower than the main pixel electrode.

9. A liquid crystal display panel, comprising:

a first substrate, comprising;

a plurality of parallel scan lines disposed on the first substrate; and

a plurality of parallel data lines disposed on the first substrate, wherein the plurality of scan lines are crossed by the plurality of data lines and the first substrate is divided into multiple pixel areas, each pixel area of the multiple pixel areas having a strip-shape of a longitudinal length equal to each other;

a second substrate, disposed opposite to the first substrate; and

a liquid crystal layer sandwiched by the first substrate and the second substrate, wherein each pixel area of the multiple pixel areas comprises a main pixel area and a sub-pixel area,

the main pixel area and the sub-pixel area having a strip-shape of a corresponding width equal to each other, the main pixel area and the sub-pixel area and the sub-pixel area combined to be the longitudinal length of each pixel area of the multiple pixel areas,

a first longitudinal area of the main pixel area gradually increased from a side edge to a center of the liquid crystal display panel and a second longitudinal area of the sub-pixel area gradually decreased from the side edge to the center of the liquid crystal display panel, and a voltage applied on the sub-pixel area when displaying is smaller than the main pixel area.

10. The display panel according to claim 9, wherein the area of the main pixel area and the sub-pixel area is distributed symmetrically according to a line between middle points of upper edge and a lower edge of the liquid crystal display panel.

11. The display panel according to claim 9, wherein the area of the main pixel area and the sub-pixel area is constant from the upper edge to the lower edge of the liquid crystal display panel.

12. The display panel according to claim 9, wherein the main pixel area comprises:

a main switch unit, disposed on the first substrate, comprising;

a first gate, electrically connected to a corresponding scan line;

a first source, electrically connected to a corresponding data line; and

a first drain; and

a main pixel electrode electrically connected to the first drain; and

wherein the sub pixel area comprises;

a sub-switch unit, disposed on the first substrate, comprising;

a second gate, electrically connected to the corresponding scan line;

a second source, electrically connected to the corresponding data line; and

a second drain; and

a sub-pixel electrode electrically connected to the second drain, wherein the area of the main pixel area is getting larger and the area of the sub-pixel area is getting smaller from the edge to the center of the liquid crystal display panel.

13. The display panel according to claim 12, the pixel area further comprises an electron sharing unit, electrically connected to the sub-pixel electrode for sharing the electrons on the sub-pixel electrode to make the voltage on the sub-pixel electrode is lower than the main pixel electrode.

14. The display panel according to claim 13, the electron sharing unit comprising:

a sharing switch unit, comprising;

a third gate, electrically connected a neighboring scan line which is neighboring to the corresponding scan line;

a third source, electrically connected to the sub-pixel electrode; and

a third drain; and

a sharing capacity, electrically connected to the third drain, wherein the sharing switch turns ON for sharing the electron on the sub-pixel electrode to make the voltage on the sub-pixel electrode is lower than the main pixel electrode.

15. The display panel according to claim 14, wherein the main switch unit, the sub-switch unit and the sharing switch unit are thin-film transistors.