Display panel

Patent metadata

Field	Value
Publication number	US-2016335973-A1
Application number	US-201615149198-A
Country	US
Kind code	A1
Filing date	May 9, 2016
Priority date	May 14, 2015
Publication date	Nov 17, 2016
Grant date	—

Abstract

A display panel has a display area and a non-display area surrounding the display area, and the display panel includes scan lines, data lines, pixel structures, at least one driving device, capacitor electrode lines, and compensation capacitors. Each pixel structure includes an active device, a pixel electrode, and a storage capacitor. The driving device is located in the non-display area and is electrically connected to the pixel structures. The capacitor electrode lines extend to the display area from the non-display area and are electrically connected to the storage capacitors of the pixel structures. The compensation capacitors are located in the non-display area and between the pixel structures and the driving device. Two ends of each of the compensation capacitor are electrically connected to one of the scan lines and one of the capacitor electrode lines, respectively.

First claim

What is claimed is:

1 . A display panel having a display area and a non-display area surrounding the display area, the display panel comprising:
a plurality of scan lines and a plurality of data lines, the scan lines and the data lines extending to the display area from the non-display area; a plurality of pixel structures located in the display area and electrically connected to the scan lines and the data lines, wherein each of the pixel structures comprises an active device and a pixel electrode electrically connected to the active device; at least one driving device located in the non-display area and electrically connected to the pixel structures; a plurality of capacitor electrode lines extending to the display area from the non-display area; and a plurality of compensation capacitors located in the non-display area and between the pixel structures and the at least one driving device, wherein one end of each of the compensation capacitors is electrically connected to one of the scan lines, and the other end of each of the compensation capacitors is electrically connected to one of the capacitor electrode lines.

2 . The display panel of claim 1 , wherein a capacitance of each of the compensation capacitors is greater than or at least equal to 10 pF and is smaller than or equal to 700 pF.

3 . The display panel of claim 1 , further comprising a voltage input pad electrically connected to the capacitor electrode lines, wherein
the at least one driving device is located in the non-display area on one side of the display area and is electrically connected to the scan lines, the voltage input pad and the at least one driving device are located in the non-display area on the one side of the display area, and the compensation capacitors are arranged between the display area and the at least one driving device.

4 . The display panel of claim 1 , further comprising a plurality of voltage input pads electrically connected to the capacitor electrode lines, wherein
the at least one driving device comprises a first driving device and a second driving device respectively located in the non-display area on two opposite sides of the display area, such that the first driving device and the second driving device are electrically connected to the scan lines, respectively, the voltage input pads are respectively located in the non-display area on the two opposite sides of the display area, and the compensation capacitors are respectively arranged between the display area and the first driving device and between the display area ad the second driving device.

5 . The display panel of claim 1 , further comprising a voltage input pad electrically connected to the capacitor electrode lines, wherein
the at least one driving device is located in the non-display area on one side of the display area, the voltage input pad is located in the non-display area on the other side of the display area, and the compensation capacitors are arranged between the display area and the at least one driving device.

6 . The display panel of claim 1 , wherein
the scan lines and the capacitor electrode lines are in different film layers, each of the compensation capacitors comprises a first electrode and a second electrode, the first electrode extends from one of the scan lines, the second electrode extends from one of the capacitor electrode lines, and the first electrode and the second electrode are overlapped to generate a capacitor.

7 . The display panel of claim 1 , wherein
the scan lines and the capacitor electrode lines are in different film layers, each of the compensation capacitors comprises a first electrode and a second electrode, the second electrode is constituted by one portion of one of the scan lines, the first electrode extends from one of the capacitor electrode lines, and the first electrode and the second electrode are overlapped to generate a capacitor.

8 . The display panel of claim 1 , wherein
the scan lines and the capacitor electrode lines are in different film layers, each of the compensation capacitors comprises a first electrode and a second electrode, the second electrode is constituted by one portion of one of the capacitor electrode lines, the first electrode extends from one of the scan lines, and the first electrode and the second electrode are overlapped to generate a capacitor.

9 . The display panel of claim 1 , wherein
the scan lines and the capacitor electrode lines are in one film layer, each of the compensation capacitors comprises a first electrode and a second electrode, the second electrode is constituted by one portion of one of the capacitor electrode lines, the first electrode is electrically connected to one of the scan lines through a contact window, and the first electrode and the second electrode are overlapped to generate a capacitor.

10 . The display panel of claim 1 , wherein
the scan lines and the capacitor electrode lines are in one film layer, each of the compensation capacitors comprises a first electrode and a second electrode, the second electrode is constituted by one portion of one of the scan lines, the first electrode is electrically connected to one of the capacitor electrode lines through a contact window, and the first electrode and the second electrode are overlapped to generate a capacitor.

11 . The display panel of claim 1 , wherein
the scan lines and the capacitor electrode lines are in one film layer, each of the compensation capacitors comprises a first electrode and a second electrode, the first electrode is electrically connected to one of the capacitor electrode lines through a contact window, the second electrode extends from one of the scan lines, and the first electrode and the second electrode are overlapped to generate a capacitor.

12 . The display panel of claim 1 , wherein
the scan lines and the capacitor electrode lines are in one film layer, each of the compensation capacitors comprises a first electrode and a second electrode, the first electrode is electrically connected to one of the scan lines through a contact window, the second electrode extends from one of the capacitor electrode lines, and the first electrode and the second electrode are overlapped to generate a capacitor.

13 . The display panel of claim 1 , wherein
the scan lines and the capacitor electrode lines are in one film layer, each of the compensation capacitors comprises a first electrode and a second electrode, the first electrode is electrically connected to one of the scan lines, the second electrode is connected to one of the capacitor electrode lines, and the first electrode and the second electrode are alternately arranged to generate a capacitor.

14 . The display panel of claim 1 , wherein each of the pixel structures further has a storage capacitor comprising a first capacitor electrode and a second capacitor electrode, the first capacitor electrode is connected to one of the capacitor electrode lines, and the second capacitor electrode is electrically connected to the active device of the each of the pixel structures.

Assignees

• Au Optronics Corp

Inventors

• Chung Yueh-Hung
• Hsu Ya-Ling
• Chen Han-Ming
• Liao Chen-Hsien

Classifications

• G09G3/3648

  using an active matrix (G09G3/367 - G09G3/3696 take precedence) · CPC title

• G09G2320/0247

  Flicker reduction other than flicker reduction circuits used for single beam cathode-ray tubes · CPC title

• G09G3/3611

  Control of matrices with row and column drivers · CPC title

• G09G2320/0204

  Compensation of DC component across the pixels in flat panels · CPC title

• G09G3/3677 Primary

  suitable for active matrices only · CPC title