Touch display driving circuit capable of responding to CPU commands

• US 9,176,613 B2
• Filed: 03/14/2013
• Issued: 11/03/2015
• Est. Priority Date: 02/01/2013
• Status: Active Grant

• Current Assignee: Rich IP Technology, Inc.
• Original Assignee: Rich IP Technology, Inc.
• Inventors: Chen, Han-Chang, Chia, Chung-Lin, Wu, Chih-Wen, Tu, Yen-Hung, Chang, Jen-Chieh
• Primary Examiner(s): MERCEDES, DISMERY E
• Application Number:
  US13/803,524
• Publication Number:
  US 20140218310A1
• Time in Patent Office: 964 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: G06F 3/038 Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G06F 3/04166 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 3/0418 for error correction or compensation, e.g. based on parallax, calibration or alignment
• CPC Class Codes: G06F 3/0488 using a touch-screen or digitiser, e.g. input of commands through traced gestures
• CPC Class Codes: G06F 3/14 Digital output to display device ; Cooperation and interconnection of the display device with other functional units

Abstract

A touch display driving circuit capable of responding to CPU commands, including: a first interface for receiving pixel data and touch configuration data; a second interface for coupling with a touch display; and a control unit, which drives the touch display via the second interface to show an image according to the pixel data, and executes a touch detection procedure on the touch display via the second interface, wherein the touch detection procedure is determined according to the touch configuration data.

Claims

1. A touch display driving circuit capable of responding to CPU commands, comprising:

a first interface for receiving pixel data and touch configuration data from a CPU, wherein said first interface transmits data in a serial manner or a parallel manner and said touch configuration data includes multiple control bits;

a second interface for coupling with a touch display module; and

a control unit, which drives said touch display module via said second interface to show an image according to said pixel data, and executes a touch detection procedure on said touch display module via said second interface, wherein said touch detection procedure is determined according to said touch configuration data; and

said multiple control bits included in said touch configuration data are used to determine a connection configuration of at least one multiplexer, and a weighting configuration of at least one touch point.

2. The touch display driving circuit capable of responding to CPU commands as claim 1, further comprising a third interface for transmitting touch data to said CPU, wherein said touch data is derived by said control unit during an execution of said touch detection procedure.

3. The touch display driving circuit capable of responding to CPU commands as claim 2, wherein said control unit comprises a timing control unit, a source driver unit, a gate driver unit, a touch driver unit, and a touch detection unit.

4. The touch display driving circuit capable of responding to CPU commands as claim 3, wherein said control unit further comprises a memory unit for storing said touch data.

5. The touch display driving circuit capable of responding to CPU commands as claim 2, wherein said touch display driving circuit is implemented by a single integrated circuit.

6. The touch display driving circuit capable of responding to CPU commands as claim 2, wherein said touch display driving circuit is implemented by multiple integrated circuits.

7. The touch display driving circuit capable of responding to CPU commands as claim 2, wherein said touch display module comprises a flat panel display and a touch array.

8. The touch display driving circuit capable of responding to CPU commands as claim 7, wherein said flat panel display is one selected from a group consisting of a thin-film-transistor display, an organic-light-emitting-diode display, a nanometer-carbon-tube display, a super-twisted-nematic display, and a field-emission display.

9. The touch display driving circuit capable of responding to CPU commands as claim 7, wherein said touch array is one selected from a group consisting of a capacitive type touch array, a resistive type touch array, an optical type touch array, an acoustic type touch array, a pressure sensing type touch array, and a radar type touch array.

10. The touch display driving circuit capable of responding to CPU commands as claim 1, wherein said multiple control bits included in said touch configuration data are further used to enable/disable said at least one touch point.

11. The touch display driving circuit capable of responding to CPU commands as claim 1, wherein said control unit uses said touch configuration data to execute said touch detection procedure to provide a resistor-capacitor delay compensation function.

12. The touch display driving circuit capable of responding to CPU commands as claim 1, wherein said control unit uses said touch configuration data to execute said touch detection procedure to provide a dynamic driving function.

13. The touch display driving circuit capable of responding to CPU commands as claim 1, wherein said control unit uses said touch configuration data to execute said touch detection procedure to provide an adaptive driving function.

14. The touch display driving circuit capable of responding to CPU commands as claim 1, wherein said control unit uses said touch configuration data to execute said touch detection procedure to provide a multi-stage driving function.

15. The touch display driving circuit capable of responding to CPU commands as claim 1, wherein said control unit uses said touch configuration data to execute said touch detection procedure to provide a three-dimensional touch detection function.

16. The touch display driving circuit capable of responding to CPU commands as claim 1, wherein said control unit uses said touch configuration data to execute said touch detection procedure to provide a graphical user interface touch detection function.

17. A touch display driving circuit capable of responding to CPU commands, comprising:

a first interface for receiving touch configuration data from a CPU;

a second interface for coupling with a touch module, wherein said touch module comprises a touch array selected from a group consisting of a capacitive type touch array, a resistive type touch array, an optical type touch array, an acoustic type touch array, a pressure sensing type touch array, and a radar type touch array, said touch display driving circuit is implemented by a single integrated circuit or by multiple integrated circuits; and

a control unit, which executes a touch detection procedure on said touch module via said second interface, wherein said touch detection procedure is determined according to said touch configuration data;

said touch configuration data includes multiple control bits; and

wherein said multiple control bits included in said touch configuration data are used to determine a connection configuration of at least one multiplexer, and a weighting configuration of at least one touch point.

18. The touch display driving circuit capable of responding to CPU commands as claim 17, further comprising a third interface for transmitting touch data to said CPU, wherein said touch data is derived by said control unit during an execution of said touch detection procedure.

19. The touch display driving circuit capable of responding to CPU commands as claim 17, wherein said first interface transmits data in a serial manner or a parallel manner.

20. The touch display driving circuit capable of responding to CPU commands as claim 17, wherein said multiple control bits included in said touch configuration data are further used to enable/disable said at least one touch point.