Condenser type touch screen

A technology of capacitive touch and touch screen, which is applied in the field of touch screen, can solve the problems of reducing panel transmittance, etc., and achieve the effect of improving visual effect, increasing contrast, and uniform background color

Inactive Publication Date: 2009-06-24
深圳市伟光导电膜有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to solve the problem that the transmissivity of the panel is reduced by the transparent cover plate added to shield the metal traces in the conductive layer when the capacitive touch screen is assembled into a panel in the prior art, and to provide a A capacitive touch screen with high transmittance

Method used

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  • Condenser type touch screen
  • Condenser type touch screen
  • Condenser type touch screen

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Embodiment Construction

[0018] Such as figure 2 As shown, the capacitive touch screen shown in the present invention includes a transparent substrate 10, usually made of transparent glass. One side of the substrate 10 is a film surface 11 , and the other side is an air surface 12 . A film layer 20 is provided on the side of the film surface 11 of the substrate, facing the backlight source, to sense the signal generated at the touch point and transmit it to the chip to calculate the position of the touch point through the metal wiring therein. The air surface 12 side of the substrate is provided with a black film 30 facing the user. A protective layer 40 is disposed on the black film 30 .

[0019] The film layer 20 generally includes an ITO layer and a conductive layer, and metal wires in the conductive layer are used to electrically connect the ITO layer to the chip. In order not to affect the visibility of the touch screen backlight, metal traces are usually arranged around the substrate 10 . I...

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Abstract

The invention relates to a capacitive touch screen, which comprises a substrate, and a film layer arranged on side of the substrate membrane surface. A black film is arranged around an atmospheric surface for shielding metal routings around the substrate in the film layer; a protective layer is arranged on the black film; the metal routings in the shielding film are arranged through a the atmospheric surface, so as to avoid a transparent cover plate used on one side of the atmospheric surface of the substrate, improve the transmittance of a touch-control screen panel, reduce the reflectivity of the film layer, enable the whole background of a touch-control screen to be even, improve the visual effect, enable the contrast of the touch-control screen to be improved, and reduce the working efficiency of the back light; the protective layer is arranged on the black film, so as to enable the atmospheric surface to be smooth, and protect the touch-control screen from being scratched when a finger touches the touch-control screen.

Description

【Technical field】 [0001] The present invention relates to a touch screen, and more specifically, to a capacitive touch screen. 【Background technique】 [0002] A capacitive touch screen generally includes a substrate, and an ITO layer, an insulating layer, a conductive layer and a protective layer are sequentially arranged on the film surface of the substrate near the backlight source. The ITO layer is provided with multiple wire traces in two directions criss-crossing for the position of the sensing contact; the insulating layer is used to insulate the ITO layer and the conductive layer; the conductive layer is provided with the wires in the ITO layer The traces are electrically connected to the metal traces of the chip. In order to avoid the influence of the metal traces on the visible area in the middle of the touch screen, the metal traces are usually arranged around the touch screen; the protective layer is used to protect the entire film surface, and Ensure the levelin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/044
Inventor 陈凯贾文蒋蔚许东东傅志敏黄裕坤刘锡刚毛利良何强民
Owner 深圳市伟光导电膜有限公司
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