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Driving chip, touch display device and electronic equipment

A technology for driving chips and touch display panels, applied in static indicators, electrical digital data processing, instruments, etc., can solve problems such as insufficient time and insufficient touch sensing, and improve production efficiency, facilitate production management, and reduce The effect of small volume

Active Publication Date: 2019-06-21
SHENZHEN LEGENDARY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, with the gradual improvement of the resolution of the touch display panel, for example, the resolution of the liquid crystal display panel of the mobile phone gradually adopts 2K (eg, 2560x1440) resolution or even higher resolution, and the display refresh rate generally adopts 60HZ, the line gap and frame gap will be significantly compressed. If the touch sensing electrodes are driven only in the line gap and frame gap to perform touch sensing, the touch sensing will not be fully performed due to insufficient time. question

Method used

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  • Driving chip, touch display device and electronic equipment
  • Driving chip, touch display device and electronic equipment
  • Driving chip, touch display device and electronic equipment

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Embodiment Construction

[0048]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 s...

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Abstract

The invention provides a driving chip, a touch display device and electronic equipment. The driving chip comprises a modulation end used for receiving a modulation signal or a constant voltage signal;a modulation circuit which is used for alternately outputting the modulation signal and the constant voltage signal to the modulation end; And a touch driving circuit which is used for driving a plurality of common electrodes of a touch display panel to execute touch sensing. And the voltage signals output to the touch display panel by the driving chip are based on the voltage signals on the modulation end. When the modulation circuit outputs the modulation signal to the modulation end; wherein the driving chip further drives a common electrode to execute touch sensing while driving the touchdisplay panel to execute image display, and voltage signals on the touch display panel are increased along with the increase of the modulation signals and decreased along with the decrease of the modulation signals. The touch display device comprises the driving chip. The electronic equipment comprises the touch display device.

Description

technical field [0001] The present invention relates to the technical field of integrated circuits, in particular to a driving chip for driving a touch display panel to perform image display and touch sensing. Background technique [0002] For touch display devices, especially touch display devices that multiplex common electrodes to perform touch sensing, in order to reduce the interference between touch sensing and image display refresh, manufacturers usually adopt the method of controlling the touch display panel to perform touch sensing in a time-sharing manner. measurement and image display refresh. For example, in one specific embodiment, during a line interval or a frame interval of image display, the touch display panel is driven to perform touch sensing. [0003] However, with the gradual improvement of the resolution of the touch display panel, for example, the resolution of the liquid crystal display panel of the mobile phone gradually adopts 2K (eg, 2560x1440) r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36G09G3/20G06F3/041
Inventor 林峰
Owner SHENZHEN LEGENDARY TECH