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Touch display device used for shielding electromagnetic wave interference

A touch display and electromagnetic wave technology, applied in the fields of magnetic/electric field shielding, electrical components, electrical digital data processing, etc., can solve the problem of being easily disturbed by external electromagnetic waves, the touch function of the touch film, and the touch effect of the touch film and other problems, to achieve the effect of simple structure, low production cost, and sensitive detection

Inactive Publication Date: 2018-02-16
星星显示科技(东莞)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the specific process of realizing touch control, the touch film with nanostructure is easily disturbed by external electromagnetic waves when realizing touch control, thus affecting the touch effect of the touch film
[0003] In order to reduce the interference of external electromagnetic waves, the method usually adopted in the prior art is to keep a sufficient distance between the touch film and the display module. Although this design method can improve the effect, if the electromagnetic waves from the display module are slightly Any abnormalities will still have a certain impact on the touch function of the touch film

Method used

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  • Touch display device used for shielding electromagnetic wave interference

Examples

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Embodiment 1

[0031] A touch display device for shielding electromagnetic wave interference in this embodiment, such as figure 1 As shown, it includes a protective cover 1, a touch sensing unit 2 and a display unit. The touch sensing unit 2 is used to sense a touch signal applied to the protective cover 1. The display unit includes a liquid crystal functional layer 3 and a backlight module 4. The touch display The device also includes a pressure sensing unit. The pressure sensing unit includes an upper conductive electrode layer 5 and a lower conductive electrode layer 6 constituting a capacitive sensor. The pressure sensing unit is used to sense the pressure signal applied to the protective cover plate 1. The upper conductive electrode layer 5 Located between the liquid crystal functional layer 3 and the backlight module 4 , the lower conductive electrode layer 6 is located below the backlight module 4 . Wherein, a shielding layer 7 is provided between the touch sensing unit 2 and the liqu...

Embodiment 2

[0038] Embodiment 2 of a touch display device for shielding electromagnetic wave interference of the present invention, the difference between this embodiment and Embodiment 1 is that in this embodiment, the contact pins 11 are set as square column-shaped contact pins 11, The square-column-shaped contact pin 11 can increase the pressure on the touch sensing unit 2 , and has a better detection effect on multi-touch pressure signals, thereby realizing sensitive detection of multi-touch pressure. Other structures and working principles of this embodiment are the same as those of Embodiment 1, and will not be repeated here.

Embodiment 3

[0040] Embodiment 3 of a touch display device for shielding electromagnetic wave interference of the present invention, the difference between this embodiment and Embodiment 1 is that in this embodiment, the contact pin 11 is set as an inverted trapezoidal column contact pin 11, The inverted trapezoidal column contact pin 11 can increase the pressure on the touch sensing unit 2 , and has a better detection effect on multi-touch pressure signals, and thus can well realize sensitive detection of multi-touch pressure. Other structures and working principles of this embodiment are the same as those of Embodiment 1, and will not be repeated here.

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Abstract

The invention relates to the technical field of the touch display device, in particular to a touch display device used for shielding electromagnetic wave interference. The touch display device comprises a protection cover plate, a touch induction unit and a display unit, wherein the touch induction unit is used for inducing a touch signal applied to the protection cover plate; the display unit comprises a liquid crystal functional layer and a backlight module; the touch display device also comprises a pressure induction unit, wherein the pressure induction unit comprises an upper conduction electrode layer and a lower conduction electrode layer, and the upper conduction electrode layer and the lower conduction electrode layer form a capacitive inductor; the pressure induction unit is usedfor inducing a pressure signal applied to the protection cover plate; the upper conduction electrode layer is positioned between the liquid crystal functional layer and the backlight module; the lowerconduction electrode layer is positioned below the backlight module; a shielding layer is arranged between the touch induction unit and the liquid crystal functional layer; the bottom of the protection cover plate is provided with a plurality of pins; and the pins and the touch induction unit are in contact connection. By use of the touch display device, a situation that the electromagnetic wavefrom the display unit influences the touch function of a touch membrane can be avoided.

Description

technical field [0001] The present invention relates to the technical field of touch display devices, in particular to a touch display device for shielding electromagnetic wave interference. Background technique [0002] A key component of a touch display device is the touch screen. Due to its advantages of ease of operation and flexibility, the touch screen has become the main means of human-computer interaction for personal mobile communication devices and comprehensive information terminals (such as mobile phones, tablet computers and super notebook computers, etc.). Compared with resistive touch screens and other types of touch screens, capacitive touch screens are gradually being widely used in smart terminals due to their advantages of low cost, simple structure, and durability. In the specific process of realizing the touch control, the touch film adopting the nanostructure is easily interfered by external electromagnetic waves when realizing the touch control, there...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/041H05K9/00
CPCG06F3/0412G06F3/0414H05K9/0054
Inventor 毛肖林钟少芬雷欢
Owner 星星显示科技(东莞)有限公司
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