Unlock instant, AI-driven research and patent intelligence for your innovation.

Touch display driving method, touch display driving device, and touch display

A touch driving and touch display technology is applied in the fields of touch display driving methods, touch display screens, and touch display driving devices, and can solve problems such as poor display.

Active Publication Date: 2022-07-05
BOE TECH GRP CO LTD +1
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The inventors found that, in the process of displaying on the touch display substrate shared by the above-mentioned common electrodes and touch electrodes, display defects similar to block shapes are prone to occur.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Touch display driving method, touch display driving device, and touch display

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] This embodiment provides a touch display substrate, which is particularly suitable for a touch display substrate controlled based on a TDDI chip. The touch display substrate includes: a base and a plurality of electrode blocks 1 arranged on the base.

[0032] Wherein, the substrate may be a rigid substrate or a flexible substrate, and the material of the substrate may include glass, polyimide, and the like. The electrode block 1 is preferably a self-capacitance electrode block, that is, it serves as both a touch electrode and a sensing electrode. In the touch stage, the touch driving voltage is input to the electrode block 1. When the finger touches the touch screen composed of the touch display substrate, a coupling capacitance is induced between the finger and the electrode block 1, and the voltage of the electrode block 1 changes, so that the The touch condition can be determined by detecting the voltage change of the electrode block 1 . Specifically, in this embod...

Embodiment 2

[0037] like figure 1 As shown, this embodiment provides a touch display driving method, which can be used for driving the touch display substrate provided in Embodiment 1.

[0038] Wherein, the arrangement of the electrode blocks 1 and the arrangement of the control area 2 in the touch display substrate may have various manners. In order to explain the touch display driving method of this embodiment more clearly, the electrode blocks 1 in the touch display substrate are arranged in an array below, and the control area 2 is also arranged in an array, and the control area 2 includes a plurality of The electrode block 1 will be described as an example.

[0039] In the touch display driving method of this embodiment, each frame time includes a display stage and a touch stage. When the touch display substrate is in the display stage, a common voltage is written to the electrode block 1 for display by the touch display substrate; when the touch display substrate is in the touch st...

Embodiment 3

[0050] This embodiment provides a touch display driving method, which is similar to the touch display driving method provided in Embodiment 2, and can be used for driving the touch display substrate provided in Embodiment 1.

[0051] In particular, in this embodiment, each control area 2 of the touch display substrate includes an edge position close to the adjacent control area 2 . In the touch display driving method of this embodiment, the step of writing the touch driving voltage to the electrode block 1 includes:

[0052] At edge positions in the same control area 2 , a touch driving voltage smaller than the common voltage is input to some electrode blocks 1 , and a touch driving voltage larger than the common voltage is input to some electrode blocks 1 .

[0053] It can be understood that, according to the principle of coupling effect, the electrode block 1 that is closer to the adjacent control region 2 is more likely to cause the coupling effect. Therefore, in this embo...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a touch display driving method, a touch display driving device, and a touch display screen, which belong to the technical field of display. The touch display driving method of the present invention is used for driving a touch display substrate. The touch display substrate includes a base on which a plurality of electrode blocks are arranged; the electrode blocks are time-divisionally multiplexed into a common electrode and a touch driving electrode; The display driving method includes: when the touch display substrate is in the display stage, writing a common voltage to the electrode blocks; when the touch display substrate is in the touch stage, writing the touch driving voltage to the electrode blocks; the touch display substrate is divided into a plurality of control areas, each of which includes a plurality of electrode blocks; the step of writing a touch driving voltage to the electrode blocks specifically includes: in the same control area, inputting a touch driving voltage greater than a common voltage to some of the electrode blocks, Input a touch driving voltage smaller than the common voltage to some electrode blocks.

Description

technical field [0001] The invention belongs to the field of display technology, and in particular relates to a touch display driving method, a touch display driving device, and a touch display screen. Background technique [0002] TDDI (Touch and Display Driver Integration) technology integrates touch sensing and display driving functions into a single chip, which has the advantages of reducing the cost of touch display substrates, improving touch sensitivity, reducing display noise, and increasing the thickness. Lightweight and other advantages. [0003] The touch technology in the TDDI technology generally adopts the self-capacitance mode, and usually the common electrode of the touch display substrate is shared with the touch electrodes, that is, a plurality of electrode blocks are arranged, and each electrode block is connected to a signal line independently. , the common voltage Vcom is input to the electrode block, and the electrode block is used as a common electrod...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/041G06F3/044
Inventor 李鹏涛马青于洁韩锐赵铁磊
Owner BOE TECH GRP CO LTD