TOUCH DISPLAY DEVICE AND DRIVING METHOD THEREOF

• US 20160351141A1
• Filed: 08/06/2015
• Published: 12/01/2016
• Est. Priority Date: 05/29/2015
• Status: Abandoned Application

• Current Assignee: Hon Hai Precision Industry Co., Ltd.
• Original Assignee: Hon Hai Precision Industry Co., Ltd.
• Inventors: LIU, FENG-HSIANG
• Application Number:
  US14/820,220
• Publication Number:
  US 20160351141A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/04166 Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally G06F3/04184
• CPC Class Codes: G06F 3/04184 Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes
• CPC Class Codes: G06F 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
• CPC Class Codes: G09G 3/3648 using an active matrix G09G3/367 - G09G3/3696 take precedence

Abstract

A touch display device is provided. The touch display device includes: a touch display panel and a driver circuit system. The touch display includes a first substrate and a drive layer arranged on the first substrate. The drive layer includes at least two gate lines and at least two source lines intersected with the gate lines. The touch display panel is divided into at least two blocks, each block including at least two gate lines and at least two drive circles, each drive circle including a display scanning period. The driving circuit system includes a gate driver coupled with the at least two gate lines, the gate driver being configured to scan the gate lines from an initial scanning line to a last scanning line in sequence during each display scanning period. For at least one block, initial scanning lines of at least two display scanning periods are different.

Claims

1. A touch display device comprising:

a touch display panel, wherein the touch display panel includes a first substrate and a drive layer arranged on the first substrate;

the drive layer including at least two gate lines and at least two source lines intersected with the at least two gate lines;

the touch display panel is divided into at least two blocks, each block including at least two gate lines and at least two drive circles, each drive circle including a display scanning period and a touch scanning period; and

a driving circuit system including a gate driver coupled with the at least two gate lines, the gate driver being configured to scan the gate lines from an initial scanning line to a last scanning line in sequence during each display scanning period;

for at least one block, initial scanning lines of at least two display scanning periods are different.

2. The touch display device according to claim 1, wherein for each block the initial scanning lines of at least two display scanning periods are different.

3. The touch display device according to claim 1, wherein for at least one block the initial scanning lines of any two successive display scanning periods are different.

4. The touch display device according to claim 1, wherein for each block initial scanning lines of any two successive display scanning periods are different.

5. The touch display device according to claim 1, wherein each block includes the same number of gate lines.

6. The touch display device according to claim 1, wherein for one of the at least two blocks, each gate line of the one of the at least two blocks is selected as the initial scanning line in an order that is same with the order the gate lines are arranged.

7. The touch display device according to claim 1, wherein for one of the at least two blocks, each gate line of the one of the at least two blocks is selected as the initial scanning line in an order that is contrary to the order the gate lines are arranged.

8. The touch display device according to claim 1, wherein for one of the at least two blocks, each gate line of the one of the at least two blocks is selected as the initial scanning line in a random order.

9. The touch display device according to claim 1, wherein the initial scanning line in display scanning period of different frame is different.

10. The touch display device according to claim 1, further comprising a second substrate opposite to the first substrate, wherein the second substrate includes touch sensitive electrodes, and the drive circuit system further includes a touch sensitive circuit coupled with the touch sensitive electrodes and operates with the touch sensitive electrodes to detect touch operations on the touch display panel.

11. The touch display device according to claim 1, wherein the first substrate includes common electrodes, the common electrodes being applied an alternating voltage during the touch scanning period.

12. A drive method comprising:

selecting, at a touch display device, one of at least two gate lines as an initial scanning line; and

scanning, at the touch display device, the at least two gate lines from the initial scanning line to a last scanning line in sequence during each display scanning period, wherein for at least one block the initial scanning line of at least two display scanning periods are different.

13. The method according to claim 12, further comprising:

selecting, at the touch display device, different gate lines as the initial scanning line in at least two display scanning period for each block.

14. The method according to claim 12, further comprising:

selecting, at the touch display device, different gate lines as the initial scanning line in any two successive display scanning periods for at least one block.

15. The method according to claim 12, further comprising:

selecting, at the touch display device, different gate lines as the initial scanning line in any two successive display scanning periods for each block.

16. The method according to claim 12, wherein one of the at least two blocks, the initial scanning line is switched among the gate lines of the one of the at least two blocks in an order that is same with the order the gate lines are arranged.

17. The method according to claim 12, wherein for one of the at least two blocks, each gate line of the one of the at least two blocks is selected as the initial scanning line in an order that is contrary to the order the gate lines are arranged.

18. The method according to claim 12, wherein for one of the at least two blocks, each gate line of the one of the at least two blocks is selected as the initial scanning line in a random order.

19. The method according to claim 12, further comprising:

selecting, at the touch display device, different gate lines as the initial scanning line in display scanning periods of different frame.

20. The method according to claim 12, further comprising:

detecting, at the touch display device, touch operations applied on the touch display device during each touch scanning period.