Circuit board, display control device and display device

Patent metadata

Field	Value
Publication number	US-11009982-B2
Application number	US-201916393054-A
Country	US
Kind code	B2
Filing date	Apr 24, 2019
Priority date	Sep 27, 2018
Publication date	May 18, 2021
Grant date	May 18, 2021

Abstract

The present disclosure discloses a circuit board, a display control device and a display device. The circuit board includes at least two circuit modules. Each of the circuit modules includes a plurality of first-type signal receiving terminals. Respective numbers of the first-type signal receiving terminals included in the at least two circuit modules are the same. Respective number of channels used by the at least two circuit modules to transmit a first-type signal are different. The display control device includes the above circuit board. The circuit board, the display control device and the display device provided by the present disclosure are used in touch display.

First claim

What is claimed is:

1. A circuit board connected to a touch panel and configured to receive at least a first-type signal, comprising:
at least two circuit modules, wherein each of the at least two circuit modules comprises a plurality of first-type signal receiving terminals, and respective numbers of the first-type signal receiving terminals comprised in the at least one two circuit modules are the same,
wherein each of the at least two circuit modules further comprises s first-type signal nodes, and each of the at least two circuit modules is configured to merge, through the s first-type signal nodes, channels used for transmitting the first-type signal so that respective numbers of channels used by the two circuit modules to transmit the first-type signal are different, and
wherein one of the at least two circuit modules is connected to the touch panel according to a touch resolution requirement of the touch panel.

2. The circuit board according to claim 1 , wherein:
each of the at least two circuit modules further comprises s first-type signal transmitting terminals connected in a one-to-one correspondence with the s first-type signal nodes;
each of the first-type signal nodes comprised in each of the two circuit modules is connected to at least one of the first-type signal receiving terminals; and
respective numbers of the first-type signal nodes comprised in the two circuit modules are different.

3. The circuit board according to claim 2 , wherein respective numbers of the first-type signal receiving terminals connected to at least two of the first-type signal nodes in the at least two circuit modules are either the same or different.

4. The circuit board according to claim 1 , wherein:
each of the at least two circuit modules further comprises a plurality of second-type signal receiving terminals;
respective numbers of the second-type signal receiving terminals comprised in the two circuit modules are the same; and
respective numbers of channels used by the two circuit modules to transmit a second-type signal are different.

5. The circuit board according to claim 4 , wherein:
each of the at least two circuit modules further comprises t second-type signal nodes and t second-type signal transmitting terminals connected in a one-to-one correspondence with the t second-type signal nodes;
each of the second-type signal nodes comprised in each of the two circuit modules is connected to at least one second-type signal receiving terminal; and
respective numbers of the second-type signal nodes comprised in the two circuit modules are different.

6. The circuit board according to claim 5 , wherein respective numbers of the second-type signal receiving terminals connected to at least two of the second-type signal nodes in the at least two circuit modules are either the same or different.

7. The circuit board according to claim 4 , wherein each of the first-type signal receiving terminals is a touch signal receiving terminal, and each of the second-type signal receiving terminals is a sensing signal receiving terminal.

8. The circuit board of claim 1 , wherein the circuit board further comprises at least two channel switch modules in a one-to-one correspondence with the at least two circuit modules, and each of the at least two channel switch modules is configured to turn on and off the corresponding circuit module.

9. A display control device comprising a data processor and the circuit board according to claim 1 , wherein the data processor is connected to the at least two circuit modules.

10. The display control device according to claim 9 , wherein the data processor comprises at least two touch drivers in a one-to-one correspondence with the at least two circuit modules, and respective numbers of channels of the at least two touch drivers are different.

11. The display control device according to claim 10 , wherein, when each of the two circuit modules comprises s first-type signal transmitting terminals and t second-type signal transmitting terminals, each touch driver comprises s first-type signal interfaces and t second-type signal interfaces, the s first-type signal transmitting terminals comprised in each of the circuit modules are connected to the s first-type signal interfaces comprised in each of the touch drivers in a one-to-one correspondence, and the t second-type signal transmitting terminals comprised in each of the circuit modules are connected to the t second-type signal interfaces comprised in each of the touch drivers in a one-to-one correspondence.

12. The display control device according to claim 9 , wherein, when the circuit board further comprises at least two channel switch modules, the display control device further comprises a channel control module, and the channel control module is connected to control terminals of the at least two channel switch modules.

13. A display device, comprising: the touch panel and the display control device according to claim 9 , wherein the touch panel comprises a plurality of first-type signal terminals, and each of the plurality of first-type signal receiving terminals comprised in each of the at least two circuit modules is configured to connect to the plurality of first-type signal terminals in a one-to-one correspondence.

14. The display device according to claim 13 , wherein, when each of the circuit modules comprises a plurality of second-type signal receiving terminals, the touch panel further comprises a plurality of second-type signal terminals, each of the plurality of second-type signal receiving terminals comprised in each of the circuit modules is configured to be connected to the plurality of second-type signal terminals in a one-to-one correspondence.

15. A touch panel, comprising:
at least one first-type signal receiving terminal, the at least one first-type signal receiving terminal connected to a first-type sensor channel for transmitting a first-type signal;
at least one second-type signal receiving terminal, the at least one second-type signal receiving terminals connected to a second-type sensor channel for transmitting a second-type signal;
at least one first-type of signal transmitting terminal; and
at least one second-type signal transmitting terminal wherein the touch panel is connected to the circuit board according to claim 1 .

16. A method for connecting a touch panel, comprising:
providing the touch panel, wherein the touch panel comprises:
at least one first-type signal receiving terminal, the at least one first-type signal receiving terminal connected to a first-type sensor channel for transmitting a first-type signal;
at least one second-type signal receiving terminal, the at least one second-type signal receiving terminal connected to a second-type sensor channel for transmitting a second-type signal;
at least one first-type of signal transmitting terminal; and
at least one second-type signal transmitting terminal:

connecting the at least one first-type signal transmitting terminal to the at least one first-type signal receiving terminal through a first-type signal node according to a touch resolution requirement of the touch panel; and
connecting the at least one second-type signal transmitting terminal to the at least one second-type signal receiving terminal through a second-type signal node according to a touch resolution requirement of the touch panel;
wherein the first-type signal node is configured to merge channels used for transmitting the first-type signal, and the second-type signal node is configured to merge channels used for receiving the second-type signal.

Assignees

• Hefei Xinsheng Optoelectronics Technology Co Ltd
• Boe Technology Group Co Ltd

Inventors

• Fan Wenjin

Classifications

• G06F3/044 Primary

  by capacitive means · CPC title

• G06F2203/04103

  Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices · CPC title

• G06F2203/04111

  Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate · CPC title

• G06F3/0446

  using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes · CPC title

• G06F3/04164 Primary

  Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads · CPC title