IP Library Granted Patent US 9,430,076
Granted Patent B2
US 9,430,076 · App. 13/777,574 · Granted Aug 30, 2016

Driving circuit and touch display capable of enabling a display structure to provide a touch function

Inventors: Han-Chang Chen (Taipei, TW); Yen-Hung Tu (Taipei, TW); Chung-Lin Chia (Taipei, TW); Chih-Wen Wu (Taipei, TW)
Assignee: RICH IP TECHNOLOGY INC.
G06F3/0412G06F3/044G06F3/0416
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Quick Facts
Patent No.
US 9,430,076
App. No.
13/777,574
Granted
Aug 30, 2016
Kind
B2
Abstract

A driving circuit capable of enabling a display structure to provide a touch function, including: a first multiplexing interface for coupling with multiple gate driving lines; a second multiplexing interface for coupling with at least one storage capacitor driving line; a third multiplexing interface for coupling with multiple source driving lines; a fourth multiplexing interface for coupling with multiple transparent electrodes; and a control unit for driving the gate driving lines via the first multiplexing interface to form a capacitive network on a TFT display structure, and performing a capacitive touch detection procedure on the capacitive network via an interface selected from a group consisting of the second multiplexing interface, the third multiplexing interface, the fourth multiplexing interface, and any combination thereof.

Claims (18)

1. A driving circuit ( 200 ) capable of enabling a display structure to provide a touch function, the driving circuit comprising:

a first multiplexing interface ( 201 ) for coupling with a plurality of gate signal lines (G);

a second multiplexing interface ( 202 ) for coupling with a plurality of source signal lines (S);

a third multiplexing interface ( 203 ) for coupling with a plurality of transparent electrode signal lines (ITO); and

a control unit ( 205 ) for driving said gate signal lines (G) via said first multiplexing interface ( 201 ) to form a capacitive network on a TFT display structure ( 210 ), said capacitive network including a plurality of pixel electrodes ( 2105 ) and a plurality of transparent electrodes ( 2103 ), wherein said transparent electrode ( 2103 ) is above a display material ( 2104 ) and said pixel electrodes ( 2105 ) is below said display material ( 2104 ), and performing a capacitive touch detection procedure on said capacitive network via said second multiplexing interface ( 202 ), or via both said second multiplexing interface ( 202 ) and said third multiplexing interface ( 203 );

said TFT display structure ( 210 ) comprising a gate driving lines connection port, a source driving lines connection port, a transparent electrodes connection port, and a storage capacitor driving lines connection port for communicating with said driving circuit ( 200 );

a fourth multiplexing interface ( 204 ) for coupling with at least one storage capacitor signal line (CS), and said control unit ( 205 ) further uses said fourth multiplexing interface ( 204 ) to execute said capacitive touch detection procedure;

said first multiplexing interface ( 201 ) implemented by a first switch circuit, said second multiplexing interface ( 202 ) implemented by a second switch circuit, said third multiplexing interface ( 203 ) implemented by a third switch circuit, and said fourth multiplexing interface ( 204 ) implemented by a fourth switch circuit; and

said TFT display structure ( 210 ) comprising a thin film transistor, said thin film transistor comprising a source coupled to one of said plurality of source signal lines (S), a gate coupled to one of said gate signal lines (G), and a drain coupled to a storage capacitor and one of said pixel electrodes ( 2105 ).

2. The driving circuit capable of enabling a display structure to provide a touch function as claim 1 , further comprising an output port for transmitting touch detection data to a central processing unit.

3. The driving circuit capable of enabling a display structure to provide a touch function as claim 2 , further comprising an input port for receiving display data from said central processing unit.

4. The driving circuit capable of enabling a display structure to provide a touch function as claim 3 , further comprising a communication port for communicating with said central processing unit.

5. The driving circuit capable of enabling a display structure to provide a touch function as claim 1 , wherein said control unit comprises:

a gate driver unit coupled with said first multiplexing interface;

a pixel driver unit coupled with said second multiplexing interface;

a capacitive touch driver unit coupled with said second multiplexing interface, said third multiplexing interface, and said fourth multiplexing interface respectively; and

a timing control unit coupled with said gate driver unit, said pixel driver unit, and said capacitive touch driver unit respectively.

6. The driving circuit capable of enabling a display structure to provide a touch function as claim 1 , wherein said capacitive touch detection procedure is one procedure selected from a group consisting of a self-capacitive touch detection procedure, a mutual-capacitive touch detection procedure, and any combination thereof.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 15, 2021
From: RICH IP TECHNOLOGY INC.
To: IC ARRAY MICRO AND NANO ELECTRONICS (XIANGTAN) CO., LTD.
Reel/Frame 056951/0565 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 26, 2013
From: CHEN, HAN-CHANG; TU, YEN-HUNG; CHIA, CHUNG-LIN; WU, CHIH-WEN
To: RICH IP TECHNOLOGY INC.
Reel/Frame 029879/0001 →
Priority Claims (1)
TW 101146797 A · Dec 12, 2012 · national
Continuity (1)
Related Publication 20140160058A1 · Jun 12, 2014