Touch display driving circuit capable of responding to CPU commands

• US 9,778,784 B2
• Filed: 10/05/2015
• Issued: 10/03/2017
• Est. Priority Date: 03/14/2013
• Status: Active Grant

• Current Assignee: Dongguan Joled Science&Technology Company Limited
• 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:
  US14/875,161
• Publication Number:
  US 20160026331A1
• Time in Patent Office: 729 Days
• Field of Search: None
• CPC Class Codes: G06F 3/038 Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/041661 using detection at multiple resolutions, e.g. coarse and fine scanning; using detection within a limited area, e.g. object tracking window
• CPC Class Codes: G06F 3/0418 for error correction or compensation, e.g. based on parallax, calibration or alignment
• CPC Class Codes: G06F 3/04186 Touch location disambiguation
• CPC Class Codes: G06F 3/044 by capacitive means
• 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
• CPC Class Codes: G09G 2354/00 Aspects of interface with display user
• CPC Class Codes: G09G 5/003 Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto specific for a CRT G09G1/165; for a flat panel G09G3/2092

Abstract

A touch display driving circuit capable of responding to CPU commands, including: a first interface receiving touch configuration data from a CPU and outputting touch report data to the CPU; a second interface coupling with a touch display module; a control unit executing a touch detection procedure on the touch display module via the second interface to derive touch detected data, and processing the touch detected data to generate the touch report data, wherein the touch detection procedure is determined according to the touch configuration data determining a connection configuration of at least one multiplexer and a weighting configuration of at least one touch point, and the content of the touch report data include a sensed pressure profile, a finger print, a palm print, an ear image, characteristics of a finger print, characteristics of a palm print, or characteristics of an ear image.

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 and outputting touch report data to said 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;

a control unit, which drives said touch display module via said second interface to show an image according to said pixel data, executes a touch detection procedure on said touch display module via said second interface to derive touch detected data, and processes said touch detected data to generate said touch report data, wherein said touch detection procedure is determined according to said touch configuration data, said multiple control bits included in said touch configuration data are used to determine a connection configuration of at least one multiplexer to set a touch resolution profile, and a weighting configuration of at least one touch point to set a touch sensitivity profile, and said touch report data include data selected from a group consisting of data representing a sensed pressure profile exerted on said touch display module, data representing a finger print of a user, data representing a palm print, data representing an ear image, data representing at least one touched location, characteristic data of a finger print, characteristic data of a palm print, and characteristic data of an ear image.

2. The touch display driving circuit capable of responding to CPU commands as claim 1, wherein said control unit comprises a timing control unit, a source driver unit, a gate driver unit, a touch driver unit, a touch detection unit, and an information processing unit.

3. The touch display driving circuit capable of responding to CPU commands as claim 2, wherein said touch display module comprises an in-cell touch display or an on-cell touch display or an out-cell touch display.

4. The touch display driving circuit capable of responding to CPU commands as claim 3, wherein said touch display module further comprises a pressure sensor module.

5. The touch display driving circuit capable of responding to CPU commands as claim 4, wherein said touch detected data include data derived from said pressure sensor module.

6. The touch display driving circuit capable of responding to CPU commands as claim 3, wherein said touch display module further comprises a finger print detection module.

7. The touch display driving circuit capable of responding to CPU commands as claim 6, wherein said touch detected data include data derived from said finger print detection module.

8. The touch display driving circuit capable of responding to CPU commands as claim 3, wherein said touch display module further comprises a pressure sensor module and a finger print detection module.

9. The touch display driving circuit capable of responding to CPU commands as claim 1, wherein said touch detected data are derived from a capacitive touch plane of said touch display module, said touch detected data being raw data or processed data of the raw data.

10. 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.

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 an adaptive driving 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 multi-stage 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 a three-dimensional touch detection 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 graphical user interface touch detection function.

15. The touch display driving circuit capable of responding to CPU commands as claim 1, wherein said touch report data further include data representing a change of said sensed pressure profile over time or data representing a change of a sensed touched area over time.

16. The touch display driving circuit capable of responding to CPU commands as claim 1, wherein said touch report data further include data representing a joystick style operation on a touch operation area, and said data representing a joystick style operation are derived according to a change of said sensed pressure profile over time or a change of a sensed touched area over time.

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;

a control unit, which executes a touch detection procedure on said touch module via said second interface to derive touch detected data, and processes said touch detected data to generate said touch report data, wherein said touch detection procedure is determined according to said touch configuration data;

said touch configuration data includes multiple control bits; and

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

said touch report data include data selected from a group consisting of data representing a sensed pressure profile exerted on said touch display module, data representing a finger print of a user, data representing a palm print, data representing an ear image, data representing at least one touched location, characteristic data of a finger print, characteristic data of a palm print, and characteristic data of an ear image.

18. The touch display driving circuit capable of responding to CPU commands as claim 17, further comprising a third interface for transmitting said touch report data to said CPU.

19. 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.

20. 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 and outputting touch report data to said 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;

a control unit, which drives said touch display module via said second interface to show an image according to said pixel data, executes a touch detection procedure on said touch display module via said second interface to derive touch detected data, and processes said touch detected data to generate said touch report data, wherein said touch detection procedure is determined according to said touch configuration data, said multiple control bits included in said touch configuration data are used to determine a connection configuration of at least one multiplexer to set a touch resolution profile, and a weighting configuration of at least one touch point to set a touch sensitivity profile, and said CPU processes said touch report data to get data representing a sensed pressure profile exerted on said touch display module, or characteristic data of a finger print or a palm or an ear of a user, or data representing a change of said sensed pressure profile over time, or data representing a change of a sensed touched area over time.