Driving method and driving circuit of touch display device and touch display device
A touch display device and touch drive technology are applied in electrical digital data processing, input/output process of data processing, instruments, etc., and can solve the problem that the touch detection speed cannot be satisfied, the touch detection response is slow, and the display panel is reduced. The speed of responding to false touches and other issues can reduce the duration of the touch detection cycle and improve the efficiency of touch detection.
Pending Publication Date: 2021-03-09
XIAMEN TIANMA MICRO ELECTRONICS
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Problems solved by technology
Since the display panel detects that there is a long touch detection period at the touch position of the touch subject, when the display panel is applied to a vehicle display, the long touch detection period is likely to reduce the speed of the display panel’s response to false touches, resulting in The response of touch detection is very slow, and the speed of touch detection cannot meet the needs of touch display devices
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[0028] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.
[0029] With the development of display technology, in the prior art, a display control module and a touch control module are integrated on one driver IC, and the display and touch functions of the display panel are realized by time-sharing driving of the display panel. figure 1 is a driving timing diagram of a driving method of a touch display device in the prior art, figure 2 is a timing diagram of a touch detection cycle in the prior art, such as figure 1 and figure 2 As shown, each image frame contains mult...
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The invention discloses a driving method of a touch display device and the touch display device, which comprises that each image frame comprises a plurality of display stages and a plurality of touchstages; the plurality of touch stages comprise a plurality of touch driving stages and at least one noise detection stage; each image frame comprises at least one touch detection frame, and each touchdetection frame comprises a plurality of touch driving stages; at least the first touch detection frame further comprises a noise detection stage; The driving method comprises the following steps: performing display driving on the touch display device through a display stage; performing noise detection through the noise detection stage to obtain a touch detection noise signal; applying a touch driving signal to the touch display device through the touch driving stage; wherein the display stages and the touch stages in each image frame are alternately distributed; the noise detection stage islocated before the first touch driving stage of the touch detection frame, so that the touch sensing reaction time is shortened, and the touch detection efficiency of the touch display panel is improved.
Description
technical field [0001] The present invention relates to the technical field of display panels, in particular to a driving method, a driving circuit and a touch display device for a touch display device. Background technique [0002] Nowadays, touch display panels have been widely used by people. For example, smart phones, tablet computers, etc. have used touch display panels. Existing embedded touch technologies are mainly divided into two types: one is touch The detection circuit is on the liquid crystal box (On Cell) type, and the other is the touch detection circuit in the liquid crystal box (In Cell) type. [0003] In the prior art, when a touch display panel displays a frame, the touch stage and the display stage are set at intervals, and the noise detection stage is set after the last touch drive stage of each touch detection frame to perform noise detection. When there is a touch operation of the touch subject at a certain touch driving stage of the first touch detec...
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IPC IPC(8): G06F3/041
CPCG06F3/0416
Inventor 张传煌吴常志孙莹许育民
Owner XIAMEN TIANMA MICRO ELECTRONICS