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Optical touch screen and method of making the same

A production method and technology of optical touch screen, applied in the direction of instrument, electrical digital data processing, input/output process of data processing, etc., can solve the problems of inaccessible fingers, large display screen, inconvenient touch, etc., to achieve human-computer interaction Effect

Inactive Publication Date: 2016-12-28
HEFEI BOE OPTOELECTRONICS TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But for some large-size screens (for example: 110-inch TV), due to the large display screen, if you use touch to interact, there will be places where your fingers cannot or are difficult to touch, such as: the large screen is hung on a high place, inconvenient to touch

Method used

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  • Optical touch screen and method of making the same
  • Optical touch screen and method of making the same
  • Optical touch screen and method of making the same

Examples

Experimental program
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Effect test

Embodiment 1

[0039] Such as figure 1 As shown, the optical touch screen of this embodiment includes: a first electrode layer 2 , a photosensitive material layer 3 and a second electrode layer 4 sequentially formed on a substrate 1 . Since the photosensitive material layer 3 needs to sense the light emitted by the light source, the first electrode layer 2 is a transparent electrode. In order to facilitate the determination of the position illuminated by the light source, the photosensitive material layer 3 is in the shape of a grid, while isolating the first electrode layer 2 and the second electrode layer 4 . Both the first electrode layer 2 and the second electrode layer 4 of the optical touch screen can be plate-shaped transparent electrodes, but the two layers of transparent electrodes reduce the transmittance of the optical touch screen.

[0040] In this embodiment, both the first electrode layer 2 and the second electrode layer 4 are grid-shaped, and the projection of the photosensit...

Embodiment 2

[0065] Such as Figure 8 As shown, the optical touch screen of this embodiment is basically the same as that of Embodiment 1, except that the transparent first electrode layer 2 is a plate electrode. Compared with Example 1, the transmittance is reduced to a certain extent, but the plate-shaped first electrode layer 2 can play an electrostatic shielding role when no touch occurs, and can prevent external electrical signals from affecting the electrical signals of the display panel. Impact. In terms of the manufacturing method, it is only necessary to make the first transparent electrode layer 2 into a full-surface electrode without etching. The principle of positioning the light emitted by the light source in this embodiment is the same as that in Embodiment 1, and will not be repeated here.

Embodiment 3

[0067] Such as Figure 9 As shown, the optical touch screen of this embodiment is basically the same as that of Embodiment 1, except that the transparent second electrode layer 4 is a plate electrode. Compared with Example 1, the transmittance is reduced to a certain extent, but the plate-shaped second electrode 4 acts as an electrostatic shield, preventing external electrical signals from affecting the electrical signals of the display substrate. In terms of the manufacturing method, it is only necessary to make the second transparent electrode layer into a plate-shaped electrode layer 4 . The principle of locating the light emitted by the external light source in this embodiment is the same as that in Embodiment 1, and will not be repeated here.

[0068] In the above embodiments, light is emitted by a hand-held light-emitting device, such as a laser pointer. This hand-held lighting device includes:

[0069] The first light emitter and its first control button, the first c...

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Abstract

Embodiments of the present invention relate to the technical filed of displaying. Disclosed is an optical touch screen, comprising: a substrate, and a first transparent electrode layer, a light-sensitive material layer, and a second electrode layer that are formed on the substrate, the light-sensitive material layer being latticed, isolating the first electrode layer from the second electrode layer, and being used to sense the light irradiating the optical touch screen. Also provided is a manufacturing method of the optical touch screen. In the embodiments of the present invention, the light emitted by a light source can be sensed, and the position, on a display screen, of the light emitted by the light source can be further positioned, thereby achieving man-machine interaction with a large-screen display device.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an optical touch screen and a manufacturing method thereof. Background technique [0002] As the latest input and display device, the touch screen is currently the simplest, most convenient and natural way of human-computer interaction, and has been widely used as the display screen of mobile phones, tablets or computers. But for some large-size screens (for example: 110-inch TV), due to the large display screen, if you use touch to interact, there will be places where your fingers cannot or are difficult to touch, such as: the large screen is hung on a high place, It is inconvenient to touch. Contents of the invention [0003] (1) Technical problems to be solved [0004] The technical problem to be solved by the present invention is: how to realize a photosensitive substrate capable of sensing the light emitted by a light source and locating the position of the light on the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/042
CPCG06F3/042
Inventor 刘荣铖
Owner HEFEI BOE OPTOELECTRONICS TECH
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