ARRAY SUBSTRATE, DISPLAY PANEL, DISPLAY DEVICE, AND FABRICATION METHOD THEREOF

• US 20170168636A1
• Filed: 05/24/2016
• Published: 06/15/2017
• Est. Priority Date: 12/11/2015
• Status: Active Grant

• Current Assignee: Shanghai AVIC Optoelectronics Company Limited (Tianma Microelectronics Company Limited), Tianma Microelectronics Company Limited
• Original Assignee: Shanghai AVIC Optoelectronics Company Limited (Tianma Microelectronics Company Limited), Tianma Microelectronics Company Limited
• Inventors: XI, KERUI, CUI, TINGTING
• Granted Patent: US 10,551,956 B2
• Time in Patent Office: Days
• 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 3/044 by capacitive means

Abstract

An array substrate includes a plurality of pixel units defined by intersected gate electrode lines and data lines, a plurality of independent touch-control electrodes arranged in an array, and a touch-control circuit. The touch-control circuit includes a plurality of first switch units, a plurality of first control leads, a plurality of touch-detection terminals, and a control unit. The touch-control electrode is electrically connected to one touch-control terminal through at least one of the first switch units. The first switch unit is electrically connected to the control unit through at least one of the first control leads. The first control lead is configured between any of neighboring rows of the pixel units. Further, when the array substrate is in a touch detection phase, the control unit is capable of controlling an ON status of the first switch units to allow row-by-row control of touch detection for the plurality of touch-control electrodes.

Claims

1. An array substrate, comprising:

a plurality of pixel units, defined by intersected gate electrode lines and data lines;

a plurality of independent touch-control electrodes, arranged in an array; and

a touch-control circuit including a plurality of first switch units, a plurality of first control leads, a plurality of touch-detection terminals, and a control unit, wherein;

the touch-control electrode is electrically connected to one touch-control terminal through at least one of the first switch units;

the first switch unit is electrically connected to the control unit through at least one of the first control leads;

the first control lead is configured between any of neighboring rows of the pixel units; and

when the array substrate is in a touch detection phase, the control unit is capable of controlling an ON status of the first switch units to allow row-by-row control of touch detection for the plurality of touch-control electrodes.

2. The array substrate according to claim 1, wherein:

the touch-control circuit further includes a plurality of second switch units, a plurality of second control lines, and a reference signal terminal;

the touch-control electrode is electrically connected to the reference signal terminal through a second switch unit;

the second switch unit is electrically connected to the control unit through a second control lead;

each second control lead is arranged individually between different neighboring rows of the pixel units;

when the array substrate is in the touch detection phase, the control unit is capable of simultaneously controlling the ON status of the first switch units and an OFF status of the second switch units to allow the row-by-row control of the touch detection for the plurality of touch-control electrodes; and

when the array substrate is in a display phase, the control unit is capable of simultaneously controlling all the first switch units in the OFF status and all the second switch units in the ON status.

3. The array substrate according to claim 2, wherein:

the touch-control circuit further includes a plurality of reference leads;

the second switch unit is electrically connected to the reference signal terminal through at least one of the reference leads; and

the reference lead is configured between any of neighboring rows of the pixel units.

4. The array substrate according to claim 3, wherein the reference lead, the first control lead, and the second control lead are configured between different neighboring rows of the pixel units.

5. The array substrate according to claim 2, wherein:

the first switch unit includes at least one first-type switch transistor;

the second switch unit includes at least one second-type switch transistor; and

the first-type switch transistor and the second-type switch transistor have a same conductivity type.

6. The array substrate according to claim 2, wherein:

the first switch unit includes at least one first-type switch transistor;

the second switch unit includes at least one second-type switch transistor; and

the first-type switch transistor has a conductivity type opposite to a conductivity type of the second-type switch transistor.

7. The array substrate according to claim 6, wherein the first control lead and the second control lead, respectively connecting to the first switch unit and the second switch unit that correspond to one touch control are a same control lead.

8. The array substrate according to claim 6, wherein the first-type switch transistor is an N-type switch transistor and the second-type switch transistor is a P-type switch transistor.

9. The array substrate according to claim 6, wherein

the first switch unit includes a plurality of first-type switch transistors;

and

the plurality of first-type switch transistors are configured in series with each other and electrically connected to between the touch-control electrode and the touch-detection terminal.

10. The array substrate according to claim 6, wherein:

the second switch unit includes a plurality of second-type switch transistors; and

the plurality of second-type switch transistors are configured in parallel with each other and electrically connected to between the touch-control electrode and the reference signal terminal.

11. The array substrate according to claim 2, wherein the reference signal terminal includes a common signal terminal of the array substrate.

12. The array substrate according to claim 1, wherein:

a plurality of common electrodes are formed on the array substrate; and

the plurality of common electrodes includes the touch-control electrodes.

13. The array substrate according to claim 1, wherein the first switch units corresponding to touch-control electrodes in a same column are electrically connected to a same touch-detection terminal.

14. The array substrate according to claim 1, wherein the touch-detection terminals include input terminals for data signals of the array substrate.

15. A display panel containing an array substrate, wherein the array substrate comprises:

a plurality of pixel units, defined by intersected gate electrode lines and data lines;

a plurality of independent touch-control electrodes, arranged in an array; and

a touch-control circuit including a plurality of first switch units, a plurality of first control leads, a plurality of touch-detection terminals, and a control unit, wherein;

the touch-control electrode is electrically connected to one touch-control terminal through at least one of the first switch units;

the first switch unit is electrically connected to the control unit through at least one of the first control leads;

the first control lead is configured between any of neighboring rows of the pixel units; and

when the array substrate is in a touch detection phase, the control unit is capable of controlling an ON status of the first switch units to allow row-by-row control of touch detection for the plurality of touch-control electrodes.

16. A display device containing the display panel according to claim 15.

17. A method for forming an array substrate, comprising:

providing a plurality of pixel units, defined by intersected gate electrode lines and data lines;

forming a plurality of independent touch-control electrodes in an array; and

forming a touch-control circuit including a plurality of first switch units, a plurality of first control leads, a plurality of touch-detection terminals, and a control unit, wherein;

the touch-control electrode is electrically connected to one touch-control terminal through at least one of the first switch units;

the first switch unit is electrically connected to the control unit through at least one of the first control leads;

the first control lead is configured between any of neighboring rows of the pixel units; and

when the array substrate is in a touch detection phase, the control unit controls an ON status of the first switch units to allow row-by-row control of touch detection for the plurality of touch-control electrodes.

18. The method according to claim 17, wherein:

the touch-control circuit further includes a plurality of second switch units, a plurality of second control lines, and a reference signal terminal;

the touch-control electrode is electrically connected to the reference signal terminal through one second switch unit;

the second switch unit is electrically connected to the control unit through one second control lead;

each second control lead is arranged individually between different neighboring rows of the pixel units;

when the array substrate is in the touch detection phase, the control unit simultaneously controls the ON status of the first switch units and an OFF status of the second switch units to allow the row-by-row control of the touch detection for the plurality of touch-control electrodes; and

when the array substrate is in a display phase, the control unit simultaneously controls all the first switch units in the OFF status and all the second switch units in the ON status.

19. The method according to claim 18, wherein:

the touch-control circuit further includes a plurality of reference leads;

the second switch unit is electrically connected to the reference signal terminal through at least one of the reference leads; and

the reference lead is configured between any of neighboring rows of the pixel units.

20. The method according to claim 17, wherein the first switch units corresponding to touch-control electrodes in a same column are electrically connected to a same touch-detection terminal.