DRIVING APPARATUS AND METHOD OF DISPLAY PANEL

• US 20190333463A1
• Filed: 01/11/2018
• Published: 10/31/2019
• Est. Priority Date: 10/25/2017
• Status: Active Grant

• Current Assignee: HKC Corporation Limited (Shenzhen Huike Investment Holding Co., Ltd.)
• Original Assignee: HKC Corporation Limited (Shenzhen Huike Investment Holding Co., Ltd.)
• Inventors: Shan, Jianfeng
• Granted Patent: US 10,748,500 B2
• Time in Patent Office: Days
• CPC Class Codes: G09G 2300/0447 for multi-domain technique to improve the viewing angle in a liquid crystal display, such as multi-vertical alignment [MVA]
• CPC Class Codes: G09G 2310/0205 Simultaneous scanning of several lines in flat panels
• CPC Class Codes: G09G 2320/0242 Compensation of deficiencies in the appearance of colours
• CPC Class Codes: G09G 2320/028 by changing the viewing angle properties, e.g. widening the viewing angle, adapting the viewing angle to the view direction
• CPC Class Codes: G09G 3/3659 the addressing of the pixel involving the control of two or more scan electrodes or two or more data electrodes, e.g. pixel voltage dependant on signal of two data electrodes
• CPC Class Codes: G09G 3/3677 suitable for active matrices only

Abstract

The present application discloses a driving apparatus and method of a display panel. The apparatus includes a first driver circuit and a second driver circuit; each of the first driver circuit includes two first sub driver circuits, the two first sub driver circuits correspondingly connected to one first scan line and oppositely arranged on two ends of the first scan line, and the two first sub driver circuits jointly driving the first scan line; each of the second driver circuit includes two second sub driver circuits, the two second sub driver circuits correspondingly connected to one second scan line and oppositely arranged on two ends of the second scan line, and the two second sub driver circuits jointly driving the second scan line; and the two second sub driver circuits oppositely arranged on the two ends of the second scan line jointly drive the second scan line.

Claims

1. A driving apparatus of a display panel, wherein the display panel comprises a pixel region comprising a pixel unit array, each of pixel units comprises a main pixel and a sub pixel, and the driving apparatus of the display panel comprises:

an active switch array, comprising a main driver thin film transistor arranged opposite to the main pixel, a sub driver thin film transistor arranged opposite to the sub pixel, and a charge-sharing thin film transistor arranged opposite to the sub pixel;

a scan line array, comprising a first scan line and a second scan line, wherein the first scan line is configured to drive the main driver thin film transistor and the sub driver thin film transistor, and the second scan line is configured to drive the charge-sharing thin film transistor; and

a gate driver on array circuit, comprising a first driver circuit and a second driver circuit, wherein

each of the first driver circuit comprises;

two first sub driver circuits, wherein the two first sub driver circuits are correspondingly connected to one of the first scan line and oppositely arranged on two ends of the first scan line, and the two first sub driver circuits jointly drive the first scan line;

each of the second driver circuit comprises;

two second sub driver circuits, wherein the two second sub driver circuits are correspondingly connected to one of the second scan line and oppositely arranged on two ends of the second scan line, and the two second sub driver circuits jointly drive the second scan line; and

the two second sub driver circuits oppositely arranged on the two ends of the second scan line jointly drive the second scan line, so that a potential difference is present between the main pixel and the sub pixel of each of the pixel units after the two first sub driver circuits jointly drive the first scan line.

2. The driving apparatus of the display panel of claim 1, wherein the first driver circuit and the second driver circuit are arranged at an interval.

3. The driving apparatus of the display panel of claim 2, wherein the quantity of the first driver circuits is equal to that of the second driver circuits.

4. The driving apparatus of the display panel of claim 1, wherein the two first sub driver circuits jointly drive the first scan line to be ON or OFF, so as to control the main driver thin film transistor and the sub driver thin film transistor to be turned on or turned off.

5. The driving apparatus of the display panel of claim 4, wherein the first driver circuit and the second driver circuit are arranged at an interval.

6. The driving apparatus of the display panel of claim 5, wherein the quantity of the first driver circuits is equal to that of the second driver circuits.

7. The driving apparatus of the display panel of claim 4, wherein the gate of the main driver thin film transistor and the gate of the sub driver thin film transistor are separately connected to the first scan line;

the source of the main driver thin film transistor and the source of the sub driver thin film transistor are charge input ends of the pixel units; and

the drain of the main driver thin film transistor is a charge storage end of the main pixel, and the drain of the sub driver thin film transistor is a charge storage end of the sub pixel.

8. The driving apparatus of the display panel of claim 7, wherein the gate of the charge-sharing thin film transistor is connected to the second scan line, the source of the charge-sharing thin film transistor is connected to the charge storage end of the sub pixel, and the drain of the charge-sharing thin film transistor is a shared charge storage end of the sub pixel.

9. The driving apparatus of the display panel of claim 4, wherein the gate of the main driver thin film transistor and the gate of the sub driver thin film transistor are separately connected to the first scan line;

the drain of the main driver thin film transistor and the drain of the sub driver thin film transistor are charge input ends of the pixel units; and

the source of the main driver thin film transistor is a charge storage end of the main pixel, and the source of the sub driver thin film transistor is a charge storage end of the sub pixel.

10. The driving apparatus of the display panel of claim 9, wherein the gate of the charge-sharing thin film transistor is connected to the second scan line, the drain of the charge-sharing thin film transistor is connected to the charge storage end of the sub pixel, and the source of the charge-sharing thin film transistor is a shared charge storage end of the sub pixel.

11. A driving method of a display panel, wherein the display panel comprises a gate driver on array circuit;

the gate driver on array circuit comprises a first driver circuit and a second driver circuit;

each of the first driver circuit comprises two first sub driver circuits, and the two first sub driver circuits are oppositely arranged on two sides of a scan line array of the display panel, and jointly drive one first scan line in the scan line array;

each of the second driver circuit comprises two second sub driver circuits, and the two second sub driver circuits are oppositely arranged on the two sides of the scan line array of the display panel, and jointly drive one second scan line in the scan line array; and

the following step is comprised;

enabling, according to a screen input signal, the two first sub driver circuits in the first driver circuit and the two second sub driver circuits in the second driver circuit to operate based on operation rules at regular intervals,

wherein, an operation rule of the two first sub driver circuits is to jointly drive the first scan line in the scan line array according to the screen input signal, so that a main driver thin film transistor and a sub driver thin film transistor that are connected to the first scan line are turned on; and

an operation rule of the two second sub driver circuits is to jointly drive the second scan line in the scan line array according to the screen input signal, so that a charge-sharing thin film transistor connected to the second scan line is turned on.

12. The driving method of the display panel of claim 11, wherein the two first sub driver circuits jointly drive the first scan line to be ON or OFF, so as to control the main driver thin film transistor and the sub driver thin film transistor to be turned on or turned off;

and

the two second sub driver circuits jointly drive the second scan line to be ON or OFF, so as to control the charge-sharing thin film transistor to be turned on or turned off, wherein

the two second sub driver circuits oppositely arranged on two ends of the second scan line jointly drive the second scan line, so that a potential difference is present between a main pixel and a sub pixel of each of pixel units after the two first sub driver circuits jointly drive the first scan line.

13. The driving method of the display panel of claim 12, wherein the quantity of the first driver circuits is equal to that of the second driver circuits.

14. A driving apparatus of a display panel, wherein the display panel comprises a pixel region comprising a pixel unit array, each of pixel units comprises a main pixel and a sub pixel, and the driving apparatus of the display panel comprises:

an active switch array, comprising a main driver thin film transistor arranged opposite to the main pixel, a sub driver thin film transistor arranged opposite to the sub pixel, and a charge-sharing thin film transistor arranged opposite to the sub pixel;

a scan line array, comprising a first scan line and a second scan line, wherein the first scan line is configured to drive the main driver thin film transistor and the sub driver thin film transistor;

the second scan line is configured to drive the charge-sharing thin film transistor; and

the quantity of the first scan lines is equal to that of the second scan lines; and

a gate driver on array circuit, comprising a first driver circuit and a second driver circuit, wherein the first driver circuit and the second driver circuit are arranged in parallel at an interval;

the quantity of the first driver circuits is equal to that of the second driver circuits, wherein

each of the first driver circuit comprises;

two first sub driver circuits, wherein the two first sub driver circuits are correspondingly connected to one of the first scan line and oppositely arranged on two ends of the first scan line, and the two first sub driver circuits jointly drive the first scan line;

each of the second driver circuit comprises;

two second sub driver circuits, wherein the two second sub driver circuits are correspondingly connected to one of the second scan line and oppositely arranged on two ends of the second scan line, and the two second sub driver circuits jointly drive the second scan line;

the two first sub driver circuits oppositely arranged on the two ends of the first scan line jointly drive the first scan line to be ON or OFF, so as to control the main driver thin film transistor and the sub driver thin film transistor to be turned on or turned off;

the two second sub driver circuits oppositely arranged on the two ends of the second scan line jointly drive the second scan line to be ON or OFF, so as to control the charge-sharing thin film transistor to be turned on or turned off; and

when the charge-sharing thin film transistor is turned on, a potential difference is present between the main pixel and the sub pixel of each of the pixel units after the main driver thin film transistor and the sub driver thin film transistor are turned on.

15. The driving apparatus of the display panel of claim 14, wherein the quantity of the first driver circuits is equal to that of the second driver circuits.

16. The driving apparatus of the display panel of claim 14, wherein the two first sub driver circuits jointly drive the first scan line to be ON or OFF, so as to control the main driver thin film transistor and the sub driver thin film transistor to be turned on or turned off.

17. The driving apparatus of the display panel of claim 16, wherein the gate of the main driver thin film transistor and the gate of the sub driver thin film transistor are separately connected to the first scan line;

the source of the main driver thin film transistor and the source of the sub driver thin film transistor are charge input ends of the pixel units; and

the drain of the main driver thin film transistor is a charge storage end of the main pixel, and the drain of the sub driver thin film transistor is a charge storage end of the sub pixel.

18. The driving apparatus of the display panel of claim 17, wherein the gate of the charge-sharing thin film transistor is connected to the second scan line;

the source of the charge-sharing thin film transistor is connected to the charge storage end of the sub pixel; and

the drain of the charge-sharing thin film transistor is a shared charge storage end of the sub pixel.

19. The driving apparatus of the display panel of claim 16, wherein the gate of the main driver thin film transistor and the gate of the sub driver thin film transistor are separately connected to the first scan line;

the drain of the main driver thin film transistor and the drain of the sub driver thin film transistor are charge input ends of the pixel units; and

the source of the main driver thin film transistor is a charge storage end of the main pixel, and the source of the sub driver thin film transistor is a charge storage end of the sub pixel.

20. The driving apparatus of the display panel of claim 19, wherein the gate of the charge-sharing thin film transistor is connected to the second scan line, the drain of the charge-sharing thin film transistor is connected to the charge storage end of the sub pixel, and the source of the charge-sharing thin film transistor is the shared charge storage end of the sub pixel.