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Optical touch system and using method thereof

一种光学触控、触控的技术，应用在仪器、电数字数据处理、数据处理的输入/输出过程等方向，能够解决光学触控屏幕触控感测效果不良影响等问题，达到良好触控感测效果的效果

Active Publication Date: 2016-10-05
WISTRON CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the smaller the distance between the touch object and the light-sensing unit, the larger the area occupied by the buffer material in the two-dimensional sensing image of the light-sensing unit, so that the reference line in the two-dimensional sensing image Covered by the buffer material, the light reflected by the reflective material cannot fall on the reference line after reaching the photo-sensing unit, which will adversely affect the touch-sensing effect of the optical touch screen

Method used

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  • Optical touch system and using method thereof
  • Optical touch system and using method thereof
  • Optical touch system and using method thereof

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Embodiment Construction

[0078] figure 1 is a schematic diagram of an optical touch system according to an embodiment of the present invention. Please refer to figure 1 The optical touch system 100 of this embodiment is, for example, a reflective optical touch system and includes a touch surface 110 , a first sensing module 120 and a second sensing module 130 . The touch surface 110 is, for example, a touch display surface of a liquid crystal display (Liquid Crystal Display, LCD), a light-emitting diode (Light-Emitting Diode, LED) display, a field emission display (Field Emission Display, FED) or other types of displays. This is not limited. The touch object 50 (such as a stylus, finger) is suitable for performing touch input on the touch surface 110 .

[0079] The touch surface 110 is, for example, rectangular and has a first side 112 , a second side 114 , a third side 116 , and a fourth side 118 connected in sequence, and between the first side 112 and the second side There is a first vertex 110...

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Abstract

An optical touch system includes a touch surface, a first light source and a first light-sensing unit. The first light source emits a first light. The first light is reflected at positions on a first section of the touch surface to form a first reference section at the first light-sensing unit. The first light is reflected at positions on a second section of the touch surface to form a second reference section at the first light-sensing unit. The second section is located between the first section and the first light-sensing unit. A touch object reflects the first light between the first section and the second section to produce a first input light region on the first reference section, or reflects the first light between the second section and the first light-sensing unit to produce a second input light region on the second reference section.

Description

technical field [0001] The present invention relates to the field of touch technology, and in particular to an optical touch system and its usage method. Background technique [0002] With the rapid development of technology, touch-sensitive electronic products have gradually become a mainstream trend in the market. Among the resistive, capacitive, and rear projection touch screens used in the past, the capacitive touch screen has the best touch effect, but its cost is also the most expensive, and will increase with the size of the screen. , thus limiting the application of capacitive touch screens. In order to find an alternative to the capacitive touch screen, there is currently an optical touch screen that uses an optical lens to detect the touch position, which has the advantages of low cost and good accuracy, and has more advantages in the competitive market. Become another option for large-size touch screens. [0003] For a reflective optical touch screen, a plurali...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/042
CPCG06F3/0421G06F3/03545G06F3/0412G06F3/04883G06F2203/04808
Inventor 卓卿安陈裕彦
Owner WISTRON CORP
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