CN-121979406-A - Signal control method, touch display panel and vehicle display device

Abstract

A signal control method, a touch display panel and a display device for a vehicle, wherein the signal control method is suitable for the touch display panel, the touch display panel comprises a plurality of gate lines, a plurality of data lines, a plurality of conducting wires TP, a peripheral circuit and a control chip, the signal control method comprises the steps of sequentially switching the gate lines to an enabling level through the peripheral circuit, transmitting one of a plurality of control signals to one of a plurality of switches of a time division multiplexer through the control chip when one of the gate lines has the enabling level, and starting one of the plurality of switches when one of the control signals has the enabling level, wherein one of the control signals which is preferentially switched to the enabling level in one of the picture frames is different from the other one of the control signals which is preferentially switched to the enabling level in the other one of the picture frames.

Inventors

• WANG SHENGKAI
• YU JIANCHENG
• JI SHAOXUAN
• CHEN JIAXIANG
• CHEN YIZHEN

Assignees

• 友达光电股份有限公司

Dates

Publication Date

20260505

Application Date

20260123

Priority Date

20250905

Claims (20)

1. 1. The signal control method is suitable for a touch display panel, wherein the touch display panel comprises a plurality of gate lines, a plurality of data lines, a plurality of wires, a plurality of sensing circuits, a peripheral circuit and a control chip, the peripheral circuit is coupled with the gate lines, the sensing circuits are coupled with the wires, the control chip is respectively coupled with the data lines and the wires, and the signal control method comprises the following steps: Sequentially switching the gate lines to an enable level through the peripheral circuit during a display period; When one of the gate lines has the enabling level, transmitting one of a plurality of control signals to one of a plurality of switches of a time-division multiplexer through the control chip, wherein the one of the switches is connected with one of the data lines; when one of the control signals has the enabling level, one of the switches is turned on to write the data of one of the data lines; wherein one of the control signals that is preferentially switched to the enable level in one of the plurality of frames is different from the other of the control signals that is preferentially switched to the enable level in the other of the plurality of frames, and Wherein the number of times the one of the control signals is preferentially switched to the enable level in the one of the frames is the same as the number of times the other one of the control signals is preferentially switched to the enable level in the other one of the frames.
2. 2. The signal control method of claim 1, wherein the wires are disposed above the data lines, and each of the wires overlaps the corresponding data lines of each of the control signals.
3. 3. The method of claim 1, wherein the order in which the control signals are switched to the enable level is out of order in the one of the frames.
4. 4. The method of claim 1, wherein each of the control signals is preferentially switched to the enable level the same number of times in the frames.
5. 5. The method of claim 1, wherein the control signals that are preferentially switched to the enable level are arranged out of order in the frames.
6. 6. The signal control method of claim 1, wherein the enable period of the gate lines is longer than the enable period of the control signals.
7. 7. The method of claim 1, wherein the enable period of the gate lines includes a start phase, a plurality of enable phases, a plurality of disable phases, and an end phase, the start phase is prior to the enable phases and the disable phases, wherein a sum of the enable period of the start phase and one of the enable phases is between 1.8 μs and 2 μs.
8. 8. The method of claim 1, wherein the control signals are separated from each other by a data time defined as a time for driving a corresponding pixel row in each frame time.
9. 9. The signal control method as claimed in claim 8, wherein the switching time point of the one of the control signals preferentially switching to the enable level in the one of the picture frames is separated from the switching time point of the one of the gate lines switching to the enable level by the data time.
10. 10. A touch display panel, comprising: A substrate; A peripheral circuit disposed on the substrate, wherein the peripheral circuit is coupled to the plurality of gate lines; the control chip is arranged on the substrate and is respectively coupled with a plurality of data lines and a plurality of wires, and the wires are positioned above the data lines; the sensing circuits are arranged on the substrate and are coupled with the wires; Wherein during a display period, the peripheral circuit is used for sequentially switching the gate lines to an enabling level; When one of the gate lines has the enabling level, the control chip is used for transmitting one of a plurality of control signals to one of a plurality of switches of a time-division multiplexer, wherein the one of the switches is connected with one of the data lines; When one of the control signals has the enabling level, one of the switches is turned on to write the data of one of the data lines; wherein one of the control signals that is preferentially switched to the enable level in one of the plurality of frames is different from the other of the control signals that is preferentially switched to the enable level in the other of the plurality of frames, and Wherein the number of times the one of the control signals is preferentially switched to the enable level in the one of the frames is the same as the number of times the other one of the control signals is preferentially switched to the enable level in the other one of the frames.
11. 11. The touch display panel of claim 10, wherein each of the plurality of conductive lines overlaps a corresponding one of the plurality of data lines of the plurality of control signals.
12. 12. The touch display panel of claim 10, wherein each of the plurality of conductive lines overlaps the plurality of data lines corresponding to each of the plurality of control signals.
13. 13. The touch display panel of claim 10, wherein the order in which the control signals are switched to the enable levels in the one of the frames is out of order.
14. 14. The touch display panel of claim 10, wherein each of the control signals is preferentially switched to the enable level the same number of times in the frames.
15. 15. The touch display panel of claim 10, wherein the control signals that switch to the enable level in the frames are in an out-of-order.
16. 16. The touch display panel of claim 10, wherein the enable period of the gate lines is longer than the enable period of the control signals.
17. 17. The touch display panel of claim 10, wherein the enable period of the gate lines comprises a start phase, a plurality of enable phases, a plurality of disable phases, and an end phase, the start phase is prior to the enable phases and the disable phases, wherein a sum of the enable period of the start phase and one of the enable phases is between 1.8 μs and 2 μs.
18. 18. The touch display panel of claim 10, wherein the control signals are separated from each other by a data time defined as a time for driving a corresponding pixel row by the peripheral circuit in each frame time.
19. 19. The touch display panel of claim 18, wherein the switching time point of the one of the control signals that is preferentially switched to the enable level in the one of the picture frames is separated from the switching time point of the one of the gate lines that is switched to the enable level by the data time.
20. 20. A display device for a vehicle, comprising: a base arranged on a vehicle, and The touch display panel of claim 10, disposed on the base.

Description

Signal control method, touch display panel and vehicle display device Technical Field The present disclosure relates to a signal control method, a touch display panel, and a vehicle display device, and more particularly, to a signal control method, a touch display panel, and a vehicle display device capable of adjusting a switching sequence of control signals. Background The touch display device is widely applied to various electronic products nowadays due to an intuitive and convenient operation mode. However, in the touch display device, since the data line and the conductive line (trace) for transmitting the common electrode signal may overlap each other in the vertical direction, when the touch display device is displaying, the data signal transmitted by the data line may be coupled (coupled) to the error level by the common electrode signal, resulting in a problem of short vertical line of the display screen. Disclosure of Invention Some embodiments of the present disclosure provide a signal control method, a touch display panel, and a display device for a vehicle. In the case that a specific data line and a wire (trace) for transmitting a common electrode signal are overlapped with each other in a vertical direction, the data signal of the data line is not affected by the common electrode signal by preferentially turning on a control signal corresponding to the data line which is not overlapped with the wire in the display circuit, so that the data signal is prevented from being coupled to an error level by the common electrode signal. Therefore, the problem that the display picture has a short vertical line can be avoided. Or, in the case that the data lines corresponding to each control signal may overlap with the wires for transmitting the common electrode signals in the vertical direction, different opening sequences of the control signals are set in different pictures, so that the data signals of the data lines are affected by the common electrode signals in disorder, and the positions of the short vertical lines are not fixed. Therefore, the problem that the display picture has short vertical lines can be improved. Some embodiments of the present disclosure provide a signal control method. The signal control method is suitable for a touch display panel, wherein the touch display panel comprises a plurality of gate lines, a plurality of data lines, a plurality of conducting wires, a plurality of sensing circuits, a peripheral circuit and a control chip, the peripheral circuit is coupled with the plurality of gate lines, the plurality of sensing circuits are coupled with the plurality of conducting wires, the control chip is respectively coupled with the plurality of data lines and the plurality of conducting wires, the signal control method comprises the steps of sequentially switching the plurality of gate lines to an enabling level through the peripheral circuit during display, transmitting one of a plurality of control signals to one of a plurality of switches of a time division multiplexer through the plurality of control chips, wherein the one of the plurality of switches is connected with one of the plurality of data lines, switching the one of the plurality of switches to the enabling level when the one of the plurality of control signals has the enabling level, switching the one of the plurality of data lines to the other of the plurality of switches to the enabling level when the one of the plurality of control signals has the enabling level, and the other of the plurality of control signals is preferably switching the one of the plurality of data lines to the other of the plurality of control signals to the priority level when the other of the one of the plurality of control signals is preferably switching the one of the plurality of data lines to the other of the plurality of data lines. According to some embodiments of the present disclosure, the plurality of conductive lines are disposed above the plurality of data lines, and each of the plurality of conductive lines overlaps the plurality of data lines corresponding to each of the plurality of control signals. According to some embodiments of the disclosure, in the plurality of the one, an order in which the plurality of control signals are switched to the enable level is out of order. According to some embodiments of the present disclosure, the number of times each of the plurality of control signals is preferentially switched to the enable level is the same in the plurality of picture frames. According to some embodiments of the disclosure, in the plurality of frames, the order of the plurality of control signals that are preferentially switched to the enable level is out of order. According to some embodiments of the present disclosure, an enable period of the plurality of gate lines is greater than an enable period of the plurality of control signals. According to some embodiments of the present disclosure, the enable period of