Display panel and display device

Patent metadata

Field	Value
Publication number	US-11460950-B2
Application number	US-201916767128-A
Country	US
Kind code	B2
Filing date	Dec 25, 2019
Priority date	Jan 4, 2019
Publication date	Oct 4, 2022
Grant date	Oct 4, 2022

Abstract

A display panel includes a touch display region and a border region, wherein multiple touch drive lines and multiple multi-path selection units are disposed within the touch display region, each of the multi-path selection units is electrically connected with at least part of the multiple touch drive lines, the border region includes a wiring region, and input signal lines of the multi-path selection units are arranged within the wiring region.

First claim

What we claim is:

1. A display panel, comprising: a touch display region and a border region, the border region being located at at least one side of the touch display region, a plurality of touch drive lines and a plurality of multi-path selection units being disposed within the touch display region, at least one of the multi-path selection units being electrically connected with at least part of the plurality of touch drive lines, the border region comprising a wiring region, and input signal lines of the multi-path selection units being arranged within the wiring region,
wherein the border region further comprises a drive circuit located outside the wiring region, the drive circuit comprises a plurality of signal output units, the plurality of signal output units are electrically connected with the multi-path selection units, one to one, through the input signal lines, and the signal output units time-divisionally drive the plurality of touch drive lines electrically connected with the multi-path selection units through the multi-path selection units,
wherein a quantity of the plurality of touch drive lines is N, each of the plurality of selection units is electrically connected with m touch drive lines, and a quantity of the input signal lines is N/m, wherein 1<m<N, and m and N are both natural numbers;
wherein a selection signal line for controlling gated paths of the multi-path selection units is disposed within the touch display region, and controlling ends of the multi-path selection units are all electrically connected with the selection signal line;
wherein the selection signal line inputs a gating signal to the multi-path selection units to control the input signal lines to sequentially connect to the plurality of touch drive lines;
wherein the multi-path selection units comprises a first multi-path selection unit (MUX 1 ) to a 216-th multi-path selection unit (MUX 216 ), the signal output units comprises a first signal output unit to a 216-th signal output unit;
wherein a scanning time of the drive circuit is T, and the scanning time T is divided into N/m parts, a total scanning time length of n touch drive lines corresponding to each multi-path selection unit is mT/N, wherein the n is a natural number,
within a first mT/N time, the selection signal line inputs gating signals 001, 010 and 100 to the MUX 1 , and the first signal output unit time-divisionally outputs drive signals to touch drive lines Tx 11 Tx 12 and Tx 13 ,
within a second mT/N time, the selection signal line inputs gating signals 001, 010, and 100 to the MUX 2 , and the second signal output unit time-divisionally outputs drive signals to touch drive lines Tx 21 Tx 22 and Tx 23 ,
. . . .
within a n-th mT/N time, the selection signal line inputs gating signals 001, 010 and 100 to the MUX n , and the n-th signal output unit time-divisionally outputs drive signals to touch drive lines Tx n1 Tx n2 and Tx n3 ,
. . . .
within a 215th mT/N time, the selection signal line inputs gating signals 001, 010 and 100 to the MUX 215 , and the 215-th signal output unit time-divisionally outputs drive signals to touch drive lines Tx 2151 Tx 2152 and Tx 2153 and within a 216th mT/N time, the selection signal line inputs gating signals 001, 010 and 100 to the MUX 216 , and the 216-th signal output unit time-divisionally outputs drive signals to touch drive lines TX 2161 TX 2162 and TX 2163 ,
wherein in a case the scanning time T ends, one cycle of drive scanning for the touch drive lines is completed.

2. The display panel according to claim 1 , wherein the touch display region is provided with a plurality of contacts for external connection, and the input signal lines are electrically connected with the multi-path selection units through the contacts.

3. The display panel according to claim 2 , further comprising a selection signal line for controlling gated paths of the multi-path selection units, the selection signal line being also disposed within the touch display region, and controlling ends of the multi-path selection units being all electrically connected with the selection signal line.

4. The display panel according to claim 3 , wherein the selection signal line inputs a gating signal to the multi-path selection units to control the input signal lines to sequentially connect to the plurality of touch drive lines.

5. The display panel according to claim 3 , wherein the drive circuit is a drive chip of touch and display driver integration.

6. The display panel according to claim 1 , wherein the drive circuit is a drive chip of touch and display driver integration.

7. The display panel according to claim 6 , further comprising a selection signal line for controlling gated paths of the multi-path selection units, the selection signal line being also disposed within the touch display region, and controlling ends of the multi-path selection units being all electrically connected with the selection signal line.

8. The display panel according to claim 7 , wherein the selection signal line inputs a gating signal to the multi-path selection units to control the input signal lines to sequentially connect to the plurality of touch drive lines.

9. A display device, comprising the display panel according to claim 1 .

10. The display panel according to claim 1 , wherein m=3.

11. The display panel according to claim 1 , wherein N=648.

Assignees

• Ordos Yuansheng Optoelectronics Co Ltd
• Boe Technology Group Co Ltd
• Beijing Boe Technology Dev Co Ltd

Inventors

• Zhao Jing
• Sun Jigang
• Zhao Shuang

Classifications

• G02F1/13338 Primary

  Input devices, e.g. touch panels · CPC title

• G06F3/0412

  Digitisers structurally integrated in a display · CPC title

• G06F3/0416

  Control or interface arrangements specially adapted for digitisers · CPC title

• G06F3/04164 Primary

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

• G06F3/04166 Primary

  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 title