Driving method, driver circuit and design method of driver circuit for in-cell touch display panel

• US 10,324,550 B2
• Filed: 07/15/2016
• Issued: 06/18/2019
• Est. Priority Date: 06/12/2016
• Status: Active Grant

• Current Assignee: Wuhan China Star Optoelectronics Technology Co., Ltd. (TCL Technology Group Corp.)
• Original Assignee: Wuhan China Star Optoelectronics Technology Co., Ltd. (TCL Technology Group Corp.)
• Inventors: Li, Man, Qin, Jiehui, Zhou, Jinjie
• Primary Examiner(s): Zhou, Hong
• Application Number:
  US15/117,455
• Publication Number:
  US 20180203550A1
• Time in Patent Office: 1,068 Days
• CPC Class Codes: G02F 1/1333 Constructional arrangements; Manufacturing methodsG02F1/135, G02F1/136 take precedence
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G02F 1/13454 Drivers integrated on the active matrix substrate G02F1/136277 takes precedence
• 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
• 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 30/20 Design optimisation, verification or simulation optimisation, verification or simulation of circuit designs G06F30/30
• CPC Class Codes: G06F 30/394 Routing G06F30/396 takes precedence
• CPC Class Codes: G09G 2310/0267 Details of drivers for scan electrodes, other than drivers for liquid crystal, plasma or OLED displays
• CPC Class Codes: G09G 2310/0281 Arrangement of scan or data electrode driver circuits at the periphery of a panel not inherent to a split matrix structure
• CPC Class Codes: G09G 2354/00 Aspects of interface with display user
• CPC Class Codes: G09G 3/20 for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters

Abstract

The invention provides a driving method, driver circuit and designing method of driver circuit for in-cell touch display panel. The driving method comprises: Step 10: connecting all horizontal scan lines of the touch display panel to a first GOA circuit, the first GOA circuit performing display scanning according to a preset timing sequence; Step 20: after completing each time of TP scanning according to preset timing sequence, a first horizontal scan line in a following scanning according to preset timing sequence still connected to a second GOA circuit, the second and first GOA circuits synchronously performing display scanning to the first horizontal scan line. The driving method, driver circuit and design method of driver circuit for in-cell touch display panel provided by the invention solve the dark line problem appearing in time-sharing scanning between display and TP terms for in-cell touch display panel, and improve display quality.

Claims

1. A driving method for in-cell touch display panel, which comprises:

connecting all horizontal scan lines of the touch display panel to a first gate on array (GOA) circuit, and the first GOA circuit performing display scanning according to a preset timing sequence; and

after completing each time of touch panel scanning according to the preset timing sequence, a first horizontal scan line in a following scanning according to the preset timing sequence being still connected to a second gate on array (GOA) circuit, the second GOA circuit and the first GOA circuit synchronously performing display scanning to the first horizontal scan line, wherein the first horizontal scan line is connected to both the first and second GOA circuits, while remaining ones of the horizontal scan lines are connected to the first GOA circuit only.

2. The driving method for in-cell touch display panel as claimed in claim 1, wherein the touch display panel is a hybrid in-cell LCD.

3. The driving method for in-cell touch display panel as claimed in claim 1, wherein the touch display panel is a full in-cell LCD.

4. The driving method for in-cell touch display panel as claimed in claim 1, wherein the first GOA circuit and the second GOA circuit are located respectively at two opposite sides of the touch display panel.

5. The driving method for in-cell touch display panel as claimed in claim 1, wherein the first GOA circuit and the second GOA circuit have a thrust passing simulation confirmation in advance.

6. A driver circuit for in-cell touch display panel, which comprises:

a first gate on array (GOA) circuit, and a second gate on array (GOA) circuit;

the first GOA circuit being connected to all horizontal scan lines of the touch display panel, and performing display scanning according to a preset timing sequence; and

after completing each time of touch panel scanning according to the preset timing sequence, a first horizontal scan line in a following scanning according to the preset timing sequence being still connected to the second GOA circuit, the second GOA circuit and the first GOA circuit synchronously performing display scanning to the first horizontal scan line, wherein the first horizontal scan line is connected to both the first and second GOA circuits, while remaining ones of the horizontal scan lines are connected to the first GOA circuit only.

7. The driver circuit for in-cell touch display panel as claimed in claim 6, wherein the first GOA circuit and the second GOA circuit are located respectively at two opposite sides of the touch display panel.

8. The driver circuit for in-cell touch display panel as claimed in claim 6, wherein the first GOA circuit and the second GOA circuit have a thrust passing simulation confirmation in advance.