CN-121986315-A - Touch display device, driving circuit and driving method thereof

CN121986315ACN 121986315 ACN121986315 ACN 121986315ACN-121986315-A

Abstract

A touch display device, a driving circuit and a driving method thereof relate to the technical field of touch. The touch display device comprises a display substrate (P1) and a touch structure (T1), wherein the driving circuit comprises a touch display driving circuit (1) and a control circuit (2), the touch display driving circuit (1) comprises a display driving circuit (11) and a touch driving circuit (12), the display driving circuit (11) is connected with the display substrate (P1), the touch driving circuit (12) is connected with the touch structure (T1), the control circuit (2) is configured to output a display driving signal to the display driving circuit (11) and transmit the touch signal to the touch driving circuit (12), the display driving circuit (11) is configured to control the display substrate (P1) to display images in response to the display driving signal, the touch driving circuit (12) is configured to control the touch structure (T1) to sense touch operation in response to the touch signal, the control circuit (2) is further configured to control the touch driving circuit to reset in response to the touch reset reminding signal, and in a reset stage, the touch driving signal is stopped to be output, and the display driving signal is kept.

Inventors

WANG MINGQIANG
XIAN JIANBO
HE XUEYING
CHEN GONG
XIANG LIAN
ZHANG JIAXIANG
ZHANG YUNQIAO

Assignees

京东方科技集团股份有限公司
成都京东方光电科技有限公司

Dates

Publication Date: 20260505
Application Date: 20240828

Claims (20)

The driving circuit of the touch display device comprises a display substrate and a touch structure, wherein the driving circuit comprises a touch display driving circuit and a control circuit, the touch display driving circuit comprises a display driving circuit and a touch driving circuit, the display driving circuit is connected with the display substrate, and the touch driving circuit is connected with the touch structure; the control circuit is configured to output a display driving signal to the display driving circuit and transmit a touch signal with the touch driving circuit, the display driving circuit is configured to control the display substrate to display images in response to the display driving signal, and the touch driving circuit is configured to control the touch structure to sense touch operation in response to the touch signal; The control circuit is further configured to control the touch driving circuit to reset in response to the touch reset reminding signal, and stop outputting the touch signal in a reset stage, and keep outputting the display driving signal.
The drive circuit of claim 1, wherein the touch drive circuit is configured to restart in response to a touch reset signal and output a touch reset end signal to the control circuit after writing touch initialization data; The control circuit is configured to respond to the touch reset reminding signal to output the touch reset signal, output the touch initialization data after the touch drive circuit is restarted, stop transmitting the touch signal after receiving the touch reset reminding signal and before receiving the touch reset ending signal, and keep outputting the display drive signal.
The drive circuit of claim 2, wherein the control circuit comprises a storage circuit and a processing circuit, wherein the storage circuit is configured to store the touch initialization data and output the touch initialization data after the touch drive circuit is restarted; The processing circuit is configured to respond to the touch reset reminding signal, output the touch reset signal to the touch driving circuit through the storage circuit, close communication between the storage circuit and the touch driving circuit before the touch driving circuit is restarted, stop outputting the touch signal after receiving the touch reset reminding signal and before receiving the touch reset ending signal, and keep outputting the display driving signal.
The drive circuit of claim 1, wherein the control circuit is further configured to control the display drive circuit to reset in response to a display reset alert signal and to cease outputting the display drive signal during a reset phase.
The drive circuit of claim 4, wherein the display drive circuit is further configured to restart in response to a display reset signal and output a display reset end signal after writing display initialization data; The control circuit is configured to respond to the display reset reminding signal to output the display reset signal, output display initialization data after the display driving circuit is restarted, stop outputting the display driving signal after receiving the display reset reminding signal and before receiving the display reset ending signal, and keep outputting the display driving signal.
The drive circuit of claim 4, wherein the control circuit is further configured to control the display drive circuit and the touch drive circuit to reset in response to the display reset alert signal, and to cease outputting the display drive signal and the touch signal during a reset phase.
The drive circuit of claim 6, wherein the display drive circuit is configured to restart in response to a display reset signal, and the touch drive circuit is configured to restart in response to a touch reset signal; The display driving circuit is further configured to output a reset ending signal after writing display initialization data, or the touch driving circuit is further configured to output the reset ending signal after writing touch initialization data; The control circuit is configured to output the display reset signal and the touch control reset signal in response to the display reset reminding signal, output the display initialization data after the display driving circuit is restarted, and output the touch control initialization data after the touch control driving circuit is restarted, and stop outputting the display driving signal and the touch control signal before the reset end signal is received after the display reset reminding signal is received.
The drive circuit of claim 7, wherein the control circuit comprises a storage circuit configured to store the touch initialization data and to output the touch initialization data to the touch drive circuit after the touch drive circuit completes a restart, and a processing circuit configured to store the display initialization data; The processing circuit is further configured to output the display reset signal and the touch control reset signal in response to the display reset reminding signal, output the display initialization data to the display driving circuit after the display driving circuit is restarted, close communication between the storage circuit and the touch control driving circuit before the touch control driving circuit is restarted, and stop outputting the touch control signal and the display driving signal before the reset ending signal is received after the display reset reminding signal is received.
The drive circuit of claim 7, wherein the control circuit is configured to delay outputting the touch initialization data for a first time period after outputting the touch reset signal; the control circuit is configured to delay outputting the display initialization data for a second period of time after outputting the display reset signal.
The drive circuit of claim 9, wherein the first time period is greater than or equal to 1/the sampling rate of the touch structure by the touch drive circuit; The second time period is greater than or equal to 1/the refresh rate of the display drive circuit to the display substrate.
The drive circuit of claim 2, wherein the touch drive circuit is configured to output a touch restart end signal to the control circuit after a restart is completed, and wherein the control circuit is configured to output the touch initialization data to the touch drive circuit in response to the touch restart end signal.
The drive circuit of claim 1, wherein the touch drive circuit is further configured to detect whether there is an abnormality in itself, and when there is an abnormality, output the touch reset alert signal to the control circuit.
The drive circuit according to claim 4, wherein the display drive circuit is further configured to detect whether or not there is an abnormality in itself, and when there is an abnormality, output the display reset reminder signal to the control circuit.
The drive circuit of claim 1, wherein the control circuit is further configured to receive the touch reset alert signal output by the touch drive circuit in response to a first touch operation.
The drive circuit of claim 4, wherein the control circuit is further configured to receive the display reset alert signal output by the display drive circuit in response to a second touch operation.
A touch display device comprising a display substrate, a touch structure, and the drive circuit of any one of claims 1-15.
The driving method of the touch display device comprises a driving circuit, a display substrate and a touch structure, wherein the driving circuit comprises a touch display driving circuit and a control circuit, the touch display driving circuit comprises a display driving circuit and a touch driving circuit, the display driving circuit is connected with the display substrate, and the touch driving circuit is connected with the touch structure; the driving method includes: and responding to the touch reset reminding signal to control the touch driving circuit to reset, stopping outputting the touch signal in a reset stage, and keeping outputting the display driving signal.
The driving method of claim 17, wherein controlling the touch driving circuit to reset in response to the touch reset alert signal comprises: outputting a touch reset signal to the touch drive circuit by the control circuit in response to a touch reset reminding signal so as to restart the touch drive circuit, stopping outputting the touch signal, and keeping outputting the display drive signal; Outputting touch initialization data to the touch driving circuit through the control circuit, stopping outputting the touch signal, and keeping outputting the display driving signal; And outputting a touch reset ending signal to the control circuit through the touch driving circuit, and recovering to output the touch signal.
The driving method according to claim 17, wherein the driving method further comprises: and controlling the display driving circuit and the touch driving circuit to reset by the control circuit in response to the display reset reminding signal, and stopping outputting the display driving signal and the touch signal in a reset stage.
The driving method of claim 19, wherein controlling the display driving circuit and the touch driving circuit to be reset in response to a display reset alert signal comprises: Outputting a display reset signal and a touch control reset signal by the control circuit in response to a display reset reminding signal, and stopping outputting the display driving signal and the touch control signal; the display drive circuit is controlled to restart through the display reset signal, and the touch drive circuit is controlled to restart through the touch reset signal; Outputting display initialization data to the display driving circuit through the control circuit, and touch-controlling the initialization data to the touch driving circuit; And outputting a reset ending signal through the display driving circuit or the touch driving circuit, and recovering to output the display driving signal and the touch signal.

Description

Touch display device, driving circuit and driving method thereof Technical Field The disclosure relates to the technical field of display, and in particular relates to a touch display device, a driving circuit of the touch display device and a driving method of the touch display device. Background In the devices such as mobile phones and smart watches, a touch display device is generally adopted, man-machine interaction is realized while images are displayed, and whether the touch function is normal or not directly influences the use of electronic devices by users. It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the present disclosure and thus may include information that does not constitute prior art known to those of ordinary skill in the art. Disclosure of Invention The disclosure provides a touch display device, a driving circuit of the touch display device and a driving method of the touch display device. According to one aspect of the disclosure, a driving circuit of a touch display device is provided, the touch display device comprises a display substrate and a touch structure, the driving circuit comprises a touch display driving circuit and a control circuit, the touch display driving circuit comprises a display driving circuit and a touch driving circuit, the display driving circuit is connected with the display substrate, and the touch driving circuit is connected with the touch structure; the control circuit is configured to output a display driving signal to the display driving circuit and transmit a touch signal with the touch driving circuit, the display driving circuit is configured to control the display substrate to display images in response to the display driving signal, and the touch driving circuit is configured to control the touch structure to sense touch operation in response to the touch signal; The control circuit is further configured to control the touch driving circuit to reset in response to the touch reset reminding signal, and stop outputting the touch signal in a reset stage, and keep outputting the display driving signal. In one exemplary embodiment of the present disclosure, the touch driving circuit is configured to restart in response to a touch reset signal, and to output a touch reset end signal to the control circuit after writing touch initialization data; The control circuit is configured to respond to the touch reset reminding signal to output the touch reset signal, output the touch initialization data after the touch drive circuit is restarted, stop transmitting the touch signal after receiving the touch reset reminding signal and before receiving the touch reset ending signal, and keep outputting the display drive signal. In one exemplary embodiment of the present disclosure, the control circuit includes a storage circuit configured to store the touch initialization data and output the touch initialization data after the touch driving circuit completes a restart; The processing circuit is configured to respond to the touch reset reminding signal, output the touch reset signal to the touch driving circuit through the storage circuit, close communication between the storage circuit and the touch driving circuit before the touch driving circuit is restarted, stop outputting the touch signal after receiving the touch reset reminding signal and before receiving the touch reset ending signal, and keep outputting the display driving signal. In one exemplary embodiment of the present disclosure, the control circuit is further configured to control the display driving circuit to reset in response to a display reset alert signal, and to stop outputting the display driving signal during a reset phase. In one exemplary embodiment of the present disclosure, the display driving circuit is further configured to restart in response to a display reset signal and output a display reset end signal after writing display initialization data; The control circuit is configured to respond to the display reset reminding signal to output the display reset signal, output display initialization data after the display driving circuit is restarted, stop outputting the display driving signal after receiving the display reset reminding signal and before receiving the display reset ending signal, and keep outputting the display driving signal. In one exemplary embodiment of the present disclosure, the control circuit is further configured to control the display driving circuit and the touch driving circuit to reset in response to the display reset reminding signal, and to stop outputting the display driving signal and the touch signal in a reset phase. In one exemplary embodiment of the present disclosure, the display driver circuit is configured to restart in response to a display reset signal, and the touch driver circuit is configured to restart in response to a touch reset signal; The display driving