Touch display panel and electronic equipment

• US 9,727,188 B2
• Filed: 06/12/2015
• Issued: 08/08/2017
• Est. Priority Date: 12/12/2014
• 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: Zhai, Yingteng, Wu, Yong
• Primary Examiner(s): CHANG, KENT WU
• Assistant Examiner(s): Edwards, Mark
• Application Number:
  US14/737,493
• Publication Number:
  US 20160170525A1
• Time in Patent Office: 788 Days
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/04164 Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
• CPC Class Codes: G06F 3/044 by capacitive means
• CPC Class Codes: G09G 2300/023 Display panel composed of stacked panels
• CPC Class Codes: G09G 2300/0426 Layout of electrodes and connections
• CPC Class Codes: G09G 2310/0286 Details of a shift registers arranged for use in a driving circuit
• CPC Class Codes: G09G 2310/0291 Details of output amplifiers or buffers arranged for use in a driving circuit
• CPC Class Codes: G09G 2320/0223 Compensation for problems related to R-C delay and attenuation in electrodes of matrix panels, e.g. in gate electrodes or on-substrate video signal electrodes
• CPC Class Codes: G09G 3/20 for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
• CPC Class Codes: G09G 3/22 using controlled light sources
• CPC Class Codes: G09G 3/36 using liquid crystals

Abstract

A touch display panel, including a touch display unit and drive circuit units disposed at the periphery of the touch display unit. The touch display unit includes touch drive electrodes, the drive circuit unit includes a first drive circuit unit and a second drive circuit unit which are electrically connected with two ends of each of the touch drive electrodes, respectively, and the first drive circuit unit is electrically connected with the second drive circuit unit through a first connecting line.

Claims

1. A touch display panel, comprising:

a touch display unit and drive circuit units disposed at the periphery of the touch display unit, wherein the touch display unit comprises touch drive electrodes, the drive circuit unit comprises a first drive circuit unit and a second drive circuit unit which are electrically connected with two ends of each of the touch drive electrodes, respectively, and the first drive circuit unit is electrically connected with the second drive circuit unit through a first connecting line;

wherein the first drive circuit unit comprises a first shift register unit, a first multi-channel strobe unit and a first output unit which are sequentially electrically connected, an output end of the first output unit is electrically connected with a first end of the touch drive electrode, and the second drive circuit unit comprises a second output unit, an output end of the second output unit is electrically connected with a second end of the touch drive electrode;

wherein the first shift register unit comprises a first inverter, a second inverter, a third inverter, a first three-state inverter, a second three-state inverter and a first NAND gate,

wherein a first electrode of the first inverter is electrically connected with a fourth electrode of the first three-state inverter and a third electrode of the second three-state inverter and is configured to receive a first clock signal, and a second electrode of the first inverter is electrically connected with a third electrode of the first three-state inverter and a fourth electrode of the second three-state inverter;

a first electrode of the second inverter is electrically connected with a second electrode of the first three-state inverter and a second electrode of the second three-state inverter;

a second electrode of the second inverter, a first electrode of the second three-state inverter and a second electrode of the first NAND gate are electrically connected together and are electrically connected to an input end of a next drive circuit unit; and

the input end of the next drive circuit unit is an input end of a next adjacent shift register unit which is disposed on the same side as the present first shift register unit;

a first electrode of the first three-state inverter is an input end of the first shift register unit;

a first electrode of the first NAND gate is configured to receive a second clock signal, a third electrode of the first NAND gate is electrically connected with a first electrode of the third inverter, and a second electrode of the third inverter is an output end of the first shift register unit;

the first multi-channel strobe unit comprises a fourth inverter, a first transmission gate and a first N-type transistor, wherein;

a first electrode of the fourth inverter is an input end of the first multi-channel strobe unit and is electrically connected with a second electrode of the first transmission gate and the second electrode of the third inverter, and a second electrode of the fourth inverter is electrically connected with a first electrode of the first transmission gate and a first electrode of the first N-type transistor;

a third electrode of the first transmission gate is configured to receive a touch drive control signal, a fourth electrode of the first transmission gate is electrically connected with a second electrode of the first N-type transistor, and a third electrode of the first N-type transistor is configured to receive a low-level signal, wherein the fourth electrode of the first transmission gate or the second electrode of the first N-type transistor is an output end of the first multi-channel strobe unit;

the first output unit comprises a fifth inverter, a sixth inverter, a seventh inverter, a second transmission gate and a third transmission gate, wherein;

a first electrode of the fifth inverter is an input end of the first output unit and is electrically connected with the fourth electrode of the first transmission gate and the second electrode of the first N-type transistor, a second electrode of the fifth inverter is electrically connected with a first electrode of the sixth inverter, and a second electrode of the sixth inverter is electrically connected with a first electrode of the seventh inverter, a second electrode of the second transmission gate and a first electrode of the third transmission gate;

a second electrode of the seventh inverter is electrically connected with a first electrode of the second transmission gate and a second electrode of the third transmission gate and is electrically connected with a first end of the touch drive electrode;

a third electrode of the second transmission gate and a third electrode of the third transmission gate are electrically connected together and form an output end of the first output unit;

a fourth electrode of the second transmission gate is configured to receive a touch high-level signal, and the fourth electrode of the third transmission gate is configured to receive a touch low-level signal;

the second output unit comprises an eighth inverter, a ninth inverter, a tenth inverter, a fourth transmission gate and a fifth transmission gate, wherein;

a first electrode of the eighth inverter is an input end of the second output unit, a second electrode of the eighth inverter is electrically connected with a first electrode of the ninth inverter, and a second electrode of the ninth inverter is electrically connected with a first electrode of the tenth inverter, a second electrode of the fourth transmission gate and a first electrode of the fifth transmission gate;

a second electrode of the tenth inverter is electrically connected with a first electrode of the fourth transmission gate and a second electrode of the fifth transmission gate;

a third electrode of the fourth transmission gate and a third electrode of the fifth transmission gate are electrically connected together and form an output end of the second output unit, and are electrically connected with a second end of the touch drive electrode; and

a fourth electrode of the fourth transmission gate is configured to receive a touch high-level signal, and a fourth electrode of the fifth transmission gate is configured to receive a touch low-level signal.

2. The touch display panel of claim 1, wherein an output end of the first multi-channel strobe unit is electrically connected with an input end of the second output unit through the first connecting line.

3. The touch display panel of claim 1, wherein the second drive circuit unit further comprises a second multi-channel strobe unit, and an output end of the first shift register unit is electrically connected with an input end of the second multi-channel strobe unit through the first connecting line.

4. The touch display panel of claim 3, wherein an output end of the first multi-channel strobe unit is electrically connected with an input end of the second output unit through the first connecting line.

5. The touch display panel of claim 1, wherein the first electrode of the fifth inverter is electrically connected with the first electrode of the eighth inverter through the first connecting line.

6. The touch display panel of claim 1, wherein the second drive circuit unit further comprises a second multi-channel strobe unit, which comprises an eleventh inverter, a sixth transmission gate and a second N-type transistor, wherein:

a first electrode of the eleventh inverter is an input end of the second multi-channel strobe unit and is electrically connected with a second gate of the sixth transmission gate, and a second electrode of the eleventh inverter is electrically connected with a first electrode of the sixth transmission gate and a first electrode of the second N-type transistor;

a third electrode of the sixth transmission gate is configured to receive a touch drive control signal, and a fourth electrode of the sixth transmission gate and a second electrode of the second N-type transistor are electrically connected together and form an output end of the second multi-channel strobe unit, and are electrically connected with a first electrode of the eighth inverter; and

wherein, the first electrode of the fourth inverter is electrically connected with the first electrode of the eleventh inverter through the first connecting line.

7. The touch display panel of claim 6, wherein the first electrode of the fifth inverter is electrically connected with the first electrode of the eighth inverter through the first connecting line.

8. The touch display panel of claim 1, wherein the touch display unit comprises:

a first substrate;

a second substrate disposed opposite to the first substrate;

touch detection electrodes disposed between the first substrate and the second substrate; and

touch detection electrodes disposed on one side, which is away from the second substrate, of the first substrate.

9. The touch display panel of claim 8, wherein the touch display unit further comprises common electrodes, and the common electrodes and the touch drive electrodes are arranged on the same layer.

10. Electronic equipment, comprising the touch display panel of claim 1.

11. The touch display panel of claim 1, wherein the touch display unit further comprises a gate metal layer and a source-drain layer, and the first connecting lines are arranged on the same layer as the gate metal layer or the source-drain metal layer.