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Drive circuit

A technology of driving circuits and circuits, which is applied in the fields of electrical digital data processing, instruments, calculations, etc., can solve problems such as insufficient time, insufficient touch sensing, etc., and achieve the effect of saving power consumption

Active Publication Date: 2020-12-25
惠州市玺力科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, with the gradual improvement of the resolution of the liquid crystal display device, for example, the resolution of the liquid crystal display device of a mobile phone gradually adopts 2K (eg, 2560x1440) resolution or even higher resolution, and the display refresh rate generally adopts 60HZ, the line gaps and frame gaps will be significantly compressed, and if the touch sensing is performed on the touch sensing electrodes only in the line gaps and frame gaps, the problem of insufficient touch sensing will be caused by the obvious lack of time

Method used

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Embodiment Construction

[0055] In order to make the above objects, features and advantages of the present invention more comprehensible, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. For convenience or clarity, the thickness and size of each layer shown in the drawings and the number of related elements may be exaggerated, omitted, or schematically shown. Also, the size of elements does not entirely reflect an actual size, and the number of related elements does not entirely reflect an actual number. Due to reasons such as different sizes of the drawings, the numbers of the same or similar or related elements ...

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Abstract

The invention provides a drive circuit used for driving a touching display panel to perform image display and touching sensing. The touching display panel comprises a plurality of public electrodes. The drive circuit is used for intermittently driving the plurality of public electrodes to perform self-capacitance touching sensing. The time interval of the public electrodes performing self-capacitance touching sensing is defined as the first time interval, and the time of the plurality of public electrodes performing the image display but not performing the touching sensing is defined as the second time interval. Adjacent first time intervals comprise the second time interval. In the first time interval, the drive circuit drives the touching display panel to perform the image display and the touching sensing simultaneously, the signal on the touching display panel is the signal synchronously modulated by a modulated signal, wherein the drive circuit provides the same first public voltage for the plurality of public electrodes, drives the plurality of public electrodes to perform the image display and meanwhile further drives the public electrodes to perform the self-capacitance touching sensing.

Description

technical field [0001] The present invention relates to the technical field of touch display, in particular to a driving circuit for driving a touch display panel to simultaneously perform image display and touch sensing. Background technique [0002] Generally, the touch display device includes three types of touch display panels: plug-in, On-Cell (on-box), and In-Cell (in-box or built-in). With the development of technology, in order to further thin the touch display panel and increase the brightness of the touch display panel, the In-Cell type touch display panel has gradually become a trend. [0003] The touch display device is illustrated as an example of a liquid crystal display device. Generally, a liquid crystal display device includes a liquid crystal display panel and a driving circuit for driving the liquid crystal display panel to perform image display and touch sensing. The liquid crystal display panel includes a plurality of scanning lines, a plurality of data...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/041G06F3/044
CPCG06F3/0412G06F3/044
Inventor 林峰
Owner 惠州市玺力科技有限公司