IP Library Granted Patent US 10,403,194
Granted Patent B2
US 10,403,194 · App. 15/787,379 · Granted Sep 3, 2019

Display panel and display device

Inventors: Chunyang Li (Shanghai, CN); Dongxu Xiang (Shanghai, CN); Yue Li (Shanghai, CN)
Assignee: SHANGHAI TIANMA AM-OLED CO., LTD.
G09G3/2092G09G3/3266G09G3/3677G02F1/13452G02F1/13454G02F1/133305G02F1/134309G09G3/3648G09G3/3674G09G2300/0413G09G2300/0426G09G2300/0876G09G2310/0213G09G2320/0223G09G2320/0233H01L27/1214H01L27/3244H01L27/3276
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Quick Facts
Patent No.
US 10,403,194
App. No.
15/787,379
Granted
Sep 3, 2019
Kind
B2
Abstract

A display panel includes a display area, the display area including a plurality of scan lines; and a non-display area, the non-display area including a plurality of gate driving circuits and at least one load compensating unit; wherein at least two of the plurality of scan lines have different lengths; each gate driving circuit is respectively connected with one scan line; each load compensating unit corresponds to one gate driving circuit to compensate a load of one gate driving circuit, and the larger a length of the scan line connected with the gate driving circuit, the smaller a load added by a corresponding load compensating unit. In the display panel provided by the present disclosure, through arranging the load compensating unit, the phenomenon of the non-uniform brightness of the display panel can be improved, and display quality of the display panel can be improved.

Claims (34)

1. A display panel, comprising:

a display area, the display area comprising a plurality of scan lines each connected with at least one pixel unit; and

a non-display area, the non-display area comprising a plurality of gate driving circuits and at least one load compensating unit;

wherein at least two of the plurality of scan lines have different lengths, and the at least two scan lines having different lengths are connected with different numbers of pixel units;

each of the plurality of gate driving circuits is respectively connected with one of the plurality of scan lines;

each of the at least one load compensating unit corresponds to one of the plurality of gate driving circuits to compensate a load of the one of the plurality of gate driving circuits, and the larger a length of the scan line connected with the gate driving circuit is, the greater the number of pixel units connected with the scan line is, and the smaller a load added by a corresponding load compensating unit is;

wherein the at least one load compensating unit comprises a capacitor.

2. The display panel according to claim 1 , wherein the non-display area further comprises a drive signal line area and a gate driving circuit area where the plurality of gate driving circuits is located, the drive signal line area is located at a side of the gate driving circuit area away from the display area,

at least one load compensating unit is arranged in a portion of the drive signal line area away from the gate driving circuit area; or,

at least one load compensating unit is arranged in a portion of the drive signal line area close to the gate driving circuit area; or,

at least one load compensating unit is arranged in a portion of the gate driving circuit area away from the drive signal line area.

3. The display panel according to claim 1 , wherein a shape of the display area is circular, oval or polygonal.

4. The display panel according to claim 1 , wherein the display panel is a liquid crystal display panel or an organic light-emitting diode (OLED) display panel.

5. The display panel according to claim 1 , wherein the capacitor comprises a first metal coupling layer, a dielectric layer and a second metal coupling layer; the first metal coupling layer, the dielectric layer and the second metal coupling layer are successively arranged by stacking.

6. The display panel according to claim 5 , further comprising:

a thin film transistor, the thin film transistor comprising a gate electrode,

wherein the first metal coupling layer and the gate electrode are arranged in a same layer.

7. The display panel according to claim 1 , wherein the scan lines are arranged parallel to each other, one of the plurality of scan lines is a first scan line, the other scan lines are second scan lines,

the first scan line is arranged at a middle position of the display area, the second scan lines are symmetrically arranged at two sides of the first scan line;

a load corresponding to a length of the first scan line is taken as a reference load, the load compensating units and the second scan lines are arranged in one-to-one correspondence, so that loads in other gate driving circuits connected with the second scan lines in one-to-one correspondence are compensated accordingly.

8. The display panel according to the claim 7 , wherein the display area is a circular region, any two adjacent second scan lines and an outer edge of the display area surround to form a zigzag region, and at least one load compensating unit is arranged in the zigzag region.

9. The display panel according to claim 1 , wherein the load compensating unit and the scan line are arranged in different layers.

10. The display panel according to claim 9 , wherein the load compensating unit is connected with the gate driving circuit through bridging or through a through hole.

11. The display panel according to claim 1 , wherein the at least one load compensating unit comprises a virtual pixel unit.

12. The display panel according to claim 11 , wherein the at least one load compensating unit comprises a resistor.

13. The display panel according to claim 12 , wherein the resistor comprises a plurality of wires for respectively compensating loads in the plurality of gate driving circuits, each wire comprises at least one bending section, the number of the bending sections of at least two of the plurality of wires are not identical.

14. The display panel according to claim 12 , wherein the resistor comprises a plurality of wires for respectively compensating loads in the plurality of gate driving circuits, cross sections of at least two wires are not identical.

15. A display device, comprising a display panel, wherein the display panel comprises:

a display area, the display area comprising a plurality of scan lines each connected with at least one pixel unit; and

a non-display area, the non-display area comprising a plurality of gate driving circuits and at least one load compensating unit;

wherein at least two of the plurality of scan lines have different lengths, and the at least two scan lines having different lengths are connected with different numbers of pixel units;

each of the plurality of gate driving circuit is respectively connected with one of the plurality of scan lines;

each of the at least one load compensating unit corresponds to one of the plurality of gate driving circuits to compensate a load of the one of the plurality of gate driving circuits, and the larger a length of the scan line connected with the gate driving circuit, the greater the number of pixel units connected with the scan line, and the smaller a load added by a corresponding load compensating unit;

wherein the at least one load compensating unit comprises a capacitor.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 4, 2022
From: SHANGHAI TIANMA AM-OLED CO.,LTD.
To: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD.; WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
Reel/Frame 059498/0307 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 31, 2017
From: LI, CHUNYANG; XIANG, DONGXU; LI, YUE
To: SHANGHAI TIANMA AM-OLED CO., LTD.
Reel/Frame 043990/0214 →
Priority Claims (1)
CN 2017 1 0395714 · May 27, 2017 · national
Continuity (1)
Related Publication 20180342194A1 · Nov 29, 2018
Cited By (1)
US 12,217,718