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Optical touch screen and touch pen

A technology of optical touch screen and touch pen, which is applied in the direction of instrument, electrical digital data processing, input/output process of data processing, etc.

Inactive Publication Date: 2009-01-14
李兴文
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

People cannot get the feeling and convenience of original writing through the touch screen

Method used

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  • Optical touch screen and touch pen
  • Optical touch screen and touch pen

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0103] Specific embodiment one, take the light-transmitting protective plate in front of the screen as the touch panel:

[0104] refer to Figure 5 A row of photosensitive elements 502 arranged horizontally is arranged on the top of the touch panel 501, and a row of photosensitive elements 503 arranged vertically is arranged on the left side. The two rows of photosensitive elements form a photosensitive element group. The photosensitive element 502 and the photosensitive element 503 can be arranged in front of the touch panel 501 , behind the touch panel 501 , or buried inside the touch panel in advance.

[0105] The photosensitive element is a photosensitive element with a narrow applicable wavelength range, which uses the selectivity of the photosensitive element itself to the wavelength of the optical signal to eliminate the interference of other wavelength optical signals. If you can choose ultraviolet photosensitive element, infrared photosensitive element.

[0106] In ...

specific Embodiment 2

[0148] Specific embodiment two, take the screen of rear projection type display as touchpad:

[0149] refer to Figure 1 to Figure 9 In the optical touch screen, the screen of the rear projection display is used as the touch panel 501 and the protective plate is used as the touch panel 501, and the structure and principle are basically the same.

[0150] One of the differences is that if the screen of the rear-projection display is not a transparent medium, the light cannot be transmitted in an orderly manner inside the screen of the rear-projection display, so it is not convenient to operate with non-luminous touch elements.

[0151] The second difference is that the screen of the rear-projection display is generally large, and further design is required to ensure that the light signal emitted from the light spot can be received smoothly.

[0152] The screen of the existing large-screen rear projection display is generally formed by splicing a plurality of small screens. re...

specific Embodiment 3

[0154] Specific embodiment three, take liquid crystal display screen or cathode display tube display (CRT) screen as touch panel:

[0155] refer to Figure 1 to Figure 9 ,as well as Figure 11 and Figure 12 , the optical touch screen uses the liquid crystal display screen as the touch panel 501 or the cathode display tube display (CRT) screen as the touch panel 501, and uses the protective plate as the touch panel 501. The structure and principle are basically the same.

[0156] The difference: The difference between the LCD screen and the cathode display tube display (CRT) screen relative to the protective plate is that the light transmission between the front and rear sides of the LCD screen and the cathode display tube display (CRT) screen is not good. That is, light does not easily penetrate liquid crystal display screens and cathode display tube display (CRT) screens. The photosensitive element 502 and the photosensitive element 503 are suitably arranged on the side o...

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PUM

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Abstract

The invention discloses an optical touch screen and a touch pen and relates to a touch screen and a matching touch pen, wherein, the touch screen works by utilizing optical property and determines positions of touch points by determining positions of the related optical points; the touch pen is provided with a light emitting device. The touch pen produces optical points on a touch panel of the optical touch screen, and the optical touch screen responds by taking information of position, action and sparking of the optical points as control signals. The optical touch screen, which is provided with light sources, can also respond to touch information of non-luminous touch parts.

Description

technical field [0001] The invention relates to a touch screen and a matching touch pen. The touch screen is specifically a touch screen that utilizes optical characteristics to work. The touch pen is specifically a touch pen with a light emitting device. The touch pen forms a light spot on the touch panel of the touch screen, and the touch screen responds by using information such as position information, action information, and blinking information of the light spot as control signals. The touch screen can also respond to touch information of non-luminous touch elements. Background technique [0002] Existing touch screens made of optical properties mainly contain two types, one is an infrared touch screen; the other is a touch screen called a laser electronic whiteboard, which is mainly used in projectors, and uses laser tracking technology to scan the surface and touch handwriting. [0003] Compared with other touch screens, the existing infrared touch screen has a ser...

Claims

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Application Information

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IPC IPC(8): G06F3/042G06F3/033G06F3/0354
Inventor 李兴文孙倩李鹏飞台小丽李兴武汪红牛余峰
Owner 李兴文
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