IN-CELL TOUCH DISPLAY DEVICE

• US 20130328800A1
• Filed: 01/31/2013
• Published: 12/12/2013
• Est. Priority Date: 06/11/2012
• Status: Active Grant

• Current Assignee: Giantplus Technology Company Limited (TOPPAN Holdings, Inc.)
• Original Assignee: Giantplus Technology Company Limited (TOPPAN Holdings, Inc.)
• Inventors: PU, CHIA-CHUAN, PENG, CHIEN-YING
• Granted Patent: US 8,963,866 B2
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• 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

Abstract

An in-cell touch display device comprises a plurality of pixel structures, a display scanning circuit, a touch scanning circuit, and a control module. The pixel structures are applied to display an image and include a plurality of display scanning lines and a plurality of common electrodes. The display scanning circuit is coupled with the display scanning lines for actuating the pixel structures to display the image. The touch scanning circuit is coupled with the common electrodes so as to receive a touch signal by scanning the common electrodes. The control module is coupled with the display scanning circuit and the touch scanning circuit to receive and process the touch signal for executing the touch step. The display scanning circuit and the touch scanning circuit are integrated on the same substrate to reduce the thickness of the touch display device without affecting the touch effect.

Claims

1. An in-cell touch display device comprising:

a plurality of pixel structures displaying an image;

a display scanning circuit coupled with a plurality of display scanning lines of said pixel structures to scan said display scanning lines, thereby actuating said pixel structures to display said image;

a touch scanning circuit coupled with a plurality of common electrodes of said pixel structures to scan said common electrodes; and

a control module coupled with said display scanning circuit and said touch scanning circuit to control said display scanning circuit scanning said pixel structures and displaying said image or to control said touch scanning circuit scanning said common electrodes for a touch step;

wherein, said display scanning circuit and said touch scanning circuit are disposed on a same substrate.

2. The in-cell touch display device as claimed in claim 1, wherein said control module comprises:

a display control circuit coupled with a plurality of display signal electrodes of said pixel structures and said display scanning circuit to control said display scanning circuit scanning said display scanning lines and correspondingly outputting a display signal to said pixel structures for actuating said pixel structures to display said image;

a touch control circuit coupled with a plurality of touch detecting lines and said touch scanning circuit for receiving and processing a touch signal to control said touch scanning circuit scanning said common electrodes and to correspondingly control said touch detecting lines receiving a control signal so as to execute said touch step; and

a control circuit coupled with said display control circuit and said touch control circuit to control said display control circuit and said touch control circuit executing display and said touch step.

3. The in-cell touch display device as claimed in claim 1, wherein said substrate is a color filter substrate.

4. The in-cell touch display device as claimed in claim 1, wherein said substrate is a thin-film transistor array substrate.

5. The in-cell touch display device as claimed in claim 1, wherein said touch scanning circuit is coupled with said common electrodes.

6. The in-cell touch display device as claimed in claim 1, wherein when said touch scanning circuit is coupled with said common electrodes, said common electrodes are divided into a plurality of touch scanning electrodes ;

each of said touch scanning electrodes corresponds to part of said common electrodes.

7. The in-cell touch display device as claimed in claim 1, wherein every five common electrodes are coupled together as a touch scanning electrode, and each touch scanning electrode is respectively coupled with said touch scanning circuit.

8. The in-cell touch display device as claimed in claim 7, wherein one of said common electrodes is said touch scanning electrode;

said touch scanning electrode is respectively coupled with said touch scanning circuit.