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Capacitive touch screen

A technology of capacitive touch screen and touch point, which is applied in the direction of electrical digital data processing, instruments, data processing input/output process, etc., can solve problems such as easy generation of air bubbles and affect the service life of the touch screen, and achieve life guarantee , the effect of beautiful appearance

Inactive Publication Date: 2013-12-04
GUANGDONG GREEN PRECISION COMPONENTS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to solve the technical problem that the existing button icon is attached to the surface of the touch sensor, it is easy to generate air bubbles and affect the service life of the touch screen, the embodiment of the present invention provides a capacitive touch screen

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] see figure 1 with figure 2 , a capacitive touch screen comprising: a display screen 2 on the bottom layer for displaying images; a cover plate Cover Lens1 on the top layer for protecting the nano-indium tin metal oxide ITO sensor 3, the Cover Lens1 is made of tempered Made of glass; the ITO sensor 3 is located between the display screen 2 and the Cover Lens1, and the ITO sensor 3 is composed of one layer of ITO Film31; the Cover Lens1 and the ITO sensor 3 are bonded together by optical double-sided adhesive OCA4; A hole 5 for placing a button icon is dug on the OCA4. The size of the hole 5 is 200 microns wider than the actual size of the button icon (not shown), and the hole 5 is a through hole.

[0027] Wherein, the capacitive touch screen further includes a flexible circuit board 6 connected to the ITO sensor 3 for calculating touch points and reporting them back to the processor.

[0028] In the capacitive touch screen provided in this embodiment, the size of the ...

Embodiment 2

[0030] see figure 1 with figure 2 , a capacitive touch screen comprising: a display screen 2 on the bottom layer for displaying images; a cover plate Cover Lens1 on the top layer for protecting the nano-indium tin metal oxide ITO sensor 3, the Cover Lens1 is made of tempered Made of glass; the ITO sensor 3 is located between the display screen 2 and the Cover Lens1, and the ITO sensor 3 is composed of one layer of ITO Film31; the Cover Lens1 and the ITO sensor 3 are bonded together by optical double-sided adhesive OCA4; A hole 5 for placing a button icon is dug on the OCA4. The size of the hole 5 is 40 microns wider than the actual size of the button icon (not shown), and the hole 5 is a through hole.

[0031] Wherein, the capacitive touch screen further includes a flexible circuit board 6 connected to the ITO sensor 3 for calculating touch points and reporting them back to the processor.

[0032] In the capacitive touch screen provided in this embodiment, the size of the h...

Embodiment 3

[0034] refer to figure 1 and image 3, a capacitive touch screen, comprising: a display screen 2 on the bottom layer for displaying images; a cover plate Cover Lens1 on the top layer for protecting the nano-indium tin metal oxide ITO sensor 3, and the Cover Lens1 is composed of Made of tempered glass; the ITO sensor 3 is located between the display screen 2 and Cover Lens1 for sensing touch points; the ITO sensor 3 is composed of two layers of ITO Film (32, 34); wherein, towards the The ITO Film32 on one side of the Cover Lens1 is bonded together with the Cover Lens1 through the optical double-sided adhesive OCA4; the two layers of ITO Film (32, 34) of the ITO sensor 3 are bonded together through the second OCA33, and the first Two, the thickness of OCA33 is 70 microns; the OCA4 is dug with a hole 5 for placing a button icon, and the size of the hole 5 is 500 microns wider than the actual size of the button icon, and the hole 5 is a through hole. The capacitive touch screen ...

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Abstract

The embodiment of the invention discloses a capacitive touch screen, which comprises a display screen positioned on a lowermost layer and used for displaying images, and a Cover Lens positioned on an uppermost layer and used for protecting a nano-indium tin metal oxide (ITO) sensor, wherein the ITO sensor is positioned between the display screen and the Cover Lens, and is used for sensing a touch point; the Cover Lens is bonded with the ITO sensor through optical clear adhesive (OCA); a hole for accommodating a button icon is formed on the OCA. According to the capacitive touch screen, the technical problem of influence of bubbles produced easily by the attachment of the conventional button icon to the surface of a substrate on the appearance and service life of the touch screen is solved.

Description

technical field [0001] The invention relates to the field of capacitive touch screens, in particular to a capacitive touch screen, a capacitive touch screen capable of preventing bubbles from appearing. Background technique [0002] Touch screens are composite touch screens used in electronic products such as mobile phones, e-books, and digital cameras, among which capacitive touch screens are the most commonly used type of touch screens. [0003] The capacitive touch screen works by using the current induction of the human body. The capacitive touch screen is usually a four-layer composite glass screen. When the user's finger touches the capacitive touch screen, due to the electric field of the human body, the user and the surface of the capacitive touch screen form a coupling capacitance (for high-frequency current For example, capacitance can be regarded as a conductor), so the finger draws a small current from the touch point on the surface of the capacitive touch scree...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/044
Inventor 吴宝玉方维祥
Owner GUANGDONG GREEN PRECISION COMPONENTS CO LTD
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