An embedded touch screen and display device

A technology of embedded touch screen and touch driving electrodes, which is applied in optics, instruments, electrical digital data processing, etc. It can solve the problems of poor touch effect of touch screen, large initial detection value of touch detection device, and inability to accurately detect weak changes, etc. , to improve the accuracy, reduce the initial detection value, and improve the touch effect

Inactive Publication Date: 2015-12-02
BEIJING BOE OPTOELECTRONCIS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the positive electric field or positive mutual capacitance is large, the initial detection value of the touch detection device is large, and it is impossible to accurately detect the weak change of the projected electric field signal after the finger touches the touch screen. Therefore, the touch effect of the touch screen is poor.

Method used

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  • An embedded touch screen and display device
  • An embedded touch screen and display device
  • An embedded touch screen and display device

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] see Figure 6 and Figure 7 , the touch driving electrodes 10 are common electrodes on the first substrate 1 .

[0068] In the process of the specific embodiment, the common electrodes are time-division multiplexed. During the image display period, the common electrode signal is applied to the common electrode; during the touch control period, the touch driving signal is applied to the common electrode. The common electrodes participate in different functions at different time periods.

[0069] Figure 6 and Figure 7 The touch-sensing circuit 20 shown has different shapes, Figure 6 The shape of the corresponding touch-sensing electrodes is relatively simple.

[0070] The common electrode (touch driving electrode) 10 is divided into a plurality of strip-shaped electrodes, and the width of each strip-shaped common electrode 10 is wider than that of the touch-sensing electrode.

[0071] Figure 6 The touch sensing electrodes 20 are strip electrodes with a certain ...

Embodiment 2

[0076] see Figure 9 The touch driving electrodes 10 are strip-shaped electrodes on the first substrate 1 independent of the common electrodes, gate lines or data lines, and the touch-sensing electrodes 20 are also strip-shaped electrodes.

[0077] see Figure 10 , for the Figure 9 The shown shielding layer 40 is provided between the touch driving electrodes 10 and the touch sensing electrodes 20 . The shielding layer 40 is only disposed on the corresponding position of the touch sensing electrode 20 and the touch driving electrode 10 in the vertical overlapping area.

[0078] Such as Figure 11 Shown, embodiment two Figure 9 The touch driving electrodes 10 shown in FIG. Figure 11 not reflected in).

[0079] Figure 11 The touch driving electrode unit 101 shown can be arranged in the same layer as the gate lines, or can be arranged in a different layer. When the touch driving electrode unit 101 can be arranged on the same layer as the gate line, the touch driving el...

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Abstract

The invention discloses an embedded touch screen and a display device which are used for improving the touch effect of the embedded touch screen. The embedded touch screen provided by the embodiment of the invention comprises multiple touch driving electrodes, multiple touch inducting electrodes and a shielding layer with certain patterns, wherein the multiple touch driving electrodes are arranged along a first direction; the multiple touch inducting electrodes are arranged along a second direction intersected with the first direction; and the shielding layer is located between the touch driving electrodes and the touch inducting electrodes, used for shielding an opposite electric field between the vertical overlapping surfaces of the touch driving electrodes and the touch inducting electrodes.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an embedded touch screen and a display device. Background technique [0002] Incell Touch Panel (IncellTouchPanel) is a device that integrates touch screen and display screen. The touch driving electrodes and the touch sensing electrodes are integrated in the display screen to realize the functions of touch control and image display at the same time. Due to the characteristics of simple structure, lightness, thinness and low cost, the embedded touch screen has gradually become the mainstream in the display field. [0003] see figure 1 , for the touch driving electrodes 100 arranged horizontally and the touch sensing electrodes 200 arranged vertically, the coupling between adjacent touch driving electrodes 100 and touch sensing electrodes 200 generates an interaction capacitance C m (mutualcapacitance), when the finger touches the screen, the touch of the finger will change th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/041G02F1/1333
Inventor 丁小梁董学王海生赵卫杰任涛刘红娟杨盛际刘英明
Owner BEIJING BOE OPTOELECTRONCIS TECH CO LTD
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