Array substrate, color filter substrate, touch control display device and method for driving the same

• US 9,507,471 B2
• Filed: 05/20/2014
• Issued: 11/29/2016
• Est. Priority Date: 12/31/2013
• Status: Active Grant

• Current Assignee: Shanghai Tianma Micro-Electronics Company Limited (Tianma Microelectronics Company Limited), Tianma Microelectronics Company Limited
• Original Assignee: Shanghai Tianma Micro-Electronics Company Limited (Tianma Microelectronics Company Limited), Tianma Microelectronics Company Limited
• Inventors: Liu, Baoling, Du, Lingxiao, Yao, Qijun, Ma, Jun
• Primary Examiner(s): OSORIO, RICARDO
• Application Number:
  US14/281,897
• Publication Number:
  US 20150185902A1
• Time in Patent Office: 924 Days
• US Class Current: 1/1
• CPC Class Codes: G02F 1/136209 Light shielding layers, e.g. black matrix, incorporated in the active matrix substrate, e.g. structurally associated with the switching element
• CPC Class Codes: G02F 1/136222 Colour filters incorporated in the active matrix substrate
• CPC Class Codes: G02F 1/1368 in which the switching element is a three-electrode device G02F1/136277 takes precedence
• CPC Class Codes: G06F 2203/04111 Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
• 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 3/0443 using a single layer of sensing electrodes

Abstract

The disclosure provides an array substrate and a color filter substrate of a capacitive touch control screen, a touch control display device and a method for driving the touch control display device, so as to achieve the self-capacitive multi-point touch. The array substrate of the capacitive touch control screen includes: a peripheral area and a display area; a plurality of pixel units with pixel electrodes arranged in the display area; a plurality of touch control electrodes; and touch control electrode lead wires connected with a module configured to detect a touch control signal, wherein each of the touch control electrodes is connected respectively with one of the touch control electrode lead wires.

Claims

1. An array substrate of a capacitive touch control screen, comprising:

a peripheral area and a display area;

a plurality of pixel units with pixel electrodes positioned in the display area;

a plurality of touch control electrodes; and

touch control electrode lead wires connected with a module configured to detect a touch control signal, wherein each of the touch control electrodes is connected respectively with one of the touch control electrode lead wires, wherein the touch control electrode lead wires comprise the first metal layer or the common electrode, and a part of the touch control electrode lead wires are led out from two sides or a single side of the peripheral area to the module configured to detect the touch control signal; and

a part of the touch control electrode lead wires are led out from the display area to the module configured to detect the touch control signal.

2. The array substrate of the capacitive touch control screen according to claim 1, further comprising a common electrode positioned above or below the pixel electrodes, wherein the common electrode acts as the touch control electrodes.

3. The array substrate of the capacitive touch control screen according to claim 2, further comprising a first metal layer electrically connected with the common electrode and positioned in non-display areas between the pixel units.

4. The array substrate of the capacitive touch control screen according to claim 1, wherein the touch control electrode lead wires comprise a gate metal layer or a source metal layer or a drain metal layer, the plurality of touch control electrodes are connected to the touch control electrode lead wires through via holes in an edge area of the display area, and the touch control electrode lead wires are led out from two sides or a single side of the peripheral area to the module configured to detect the touch control signal.

5. The array substrate of the capacitive touch control screen according to claim 1, wherein the touch control electrodes receive a touch control scanning signal concurrently, and the touch control electrode lead wires are connected with the module configured to detect the touch control signal to detect signals of the respective touch control electrodes respectively.

6. A color filter substrate of a capacitive touch control screen, comprising a black matrix, a color filter layer and a peripheral area, wherein the color filter substrate further comprises a plurality of touch control electrodes and touch control electrode lead wires connected with a module configured to detect a touch control signal, wherein the touch control electrodes are located in an area of the black matrix, and each of the touch control electrodes is connected respectively with one of the touch control electrode lead wires, wherein a part of the touch control electrode lead wires are led out from the area of the black matrix onto the color filter substrate conductive electrodes preset on the color filter substrate side, and a part of the touch control electrode lead wires are led out from two sides or a single side of the peripheral area onto the color filter substrate conductive electrodes preset on the color filter substrate side, wherein the color filter substrate conductive electrodes are configured to receive the touch control signal.

7. The color filter substrate of the capacitive touch control screen according to claim 6, further comprising a first metal layer positioned on the black matrix, wherein the first metal layer acts as the touch control electrodes.

8. The color filter substrate of the capacitive touch control screen according to claim 6, wherein the touch control electrodes comprise a common electrode.

9. The color filter substrate of the capacitive touch control screen according to claim 8, further comprising a second metal layer electrically connected with the common electrode ITO, wherein the second metal layer faces the area of the black matrix.

10. The color filter substrate of the capacitive touch control screen according to claim 6, wherein the color filter substrate conductive electrodes receive the touch control signal via a channel;

and

the channel comprises;

a touch control flexible circuit board laminated together with the conductive electrodes, wherein the touch control flexible circuit board is integrated with a touch control IC;

or

conductive metal balls to connect the color filter substrate conductive electrodes with array substrate conductive electrodes connected with a display flexible circuit board, wherein the display flexible circuit board is integrated with a first IC for display operations and a second IC for touch control operations;

or

conductive metal balls to connect the color filter substrate conductive electrodes with array substrate conductive electrodes connected with a display flexible circuit board, wherein the display flexible circuit board is integrated with a third IC for both display and touch control operations.

11. The color filter substrate of the capacitive touch control screen according to claim 6, wherein the touch control electrodes receive a touch control scanning signal concurrently, and the touch control electrode lead wires and the color filter substrate conductive electrodes are connected with the module configured to detect the touch control signal through channels to detect signals of the respective touch control electrodes respectively.

12. A touch control display device, comprising an array substrate and/or a color filter substrate, wherein:

the array substrate comprises;

a peripheral area and a display area;

a plurality of pixel units with pixel electrodes positioned in the display area;

a plurality of touch control electrodes; and

touch control electrode lead wires connected with a module configured to detect a touch control signal, wherein each of the touch control electrodes is connected respectively with one of the touch control electrode lead wires, wherein the touch control electrode lead wires comprise the first metal layer or the common electrode, and a part of the touch control electrode lead wires are led out from two sides or a single side of the peripheral area to the module configured to detect the touch control signal; and

a part of the touch control electrode lead wires are led out from the display area to the module configured to detect the touch control signal; and

the color filter substrate comprises;

a black matrix, a color filter layer and a peripheral area, wherein the color filter substrate further comprises a plurality of touch control electrodes and touch control electrode lead wires connected with a module configured to detect a touch control signal, wherein the touch control electrodes are located in an area of the black matrix, and each of the touch control electrodes is connected respectively with one of the touch control electrode lead wires.

13. A method for driving the touch control display device according to claim 12, comprising:

the touch control electrodes receiving a touch control drive signal and the touch control electrodes outputting sensing signals in a touch control phase of the display device, wherein the touch control electrode lead wires connected with the respective touch control electrodes are connected with the module configured to detect the touch control signal, and the module configured to detect the touch control signal determines touch control locations according to the sensing signals of the touch control electrodes.