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Optical touch device and optical touch display device

An optical touch and display device technology, applied in identification devices, instruments, electrical digital data processing, etc., can solve the problems of uneven brightness distribution and low touch point position accuracy, and achieve the effect of improving the accuracy of judgment

Inactive Publication Date: 2012-12-26
CORETRONIC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the known technology, when the light beam passes through the light guide unit, its luminance distribution is uneven, so the accuracy of determining the position of the touch point is also low.

Method used

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  • Optical touch device and optical touch display device
  • Optical touch device and optical touch display device
  • Optical touch device and optical touch display device

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Embodiment Construction

[0047] The aforementioned and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of the embodiments with accompanying drawings. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or back, etc., are only referring to the directions of the drawings. Accordingly, the directional terms are used to illustrate and not to limit the invention.

[0048] Figure 1A It is a schematic structural diagram of an optical touch display device according to an embodiment of the present invention, Figure 1B for Figure 1A The schematic cross-sectional view of the optical touch device along the I-I line, Figure 2A for Figure 1A A three-dimensional schematic diagram of the light guide unit 130b and the light source 110c in Figure 2B for Figure 2A The three-dimensional schematic diagram of the light guide and the scattering structure in , Figure 2C for Fig...

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Abstract

The invention provides an optical touch device which is suitable for a display surface. The optical touch device comprises a light source, a light guide unit and a light detector, wherein the light source is configured near the display surface and is suitable for providing a light beam; the light guide unit is configured near the display surface, is configured on a transmitting path of the light beam and comprises a light guide body and a lambert light scattering structure; the light guide body is provided with a first surface, a second surface, a third surface, a fourth surface and a light incident surface; the light beam is suitable for entering the light guide body through the light incident surface and is suitable for being transmitted to a sensing space before the display surface form the first surface; the lambert light scattering structure is configured on the at least one surface of the second surface, the third surface and the fourth surface so as to ensure that the light beam is scattered to the first surface; and the light detector is configured near the display surface and used for sensing the light intensity change of the light beam in the sensing space. The invention also provides an optical touch display device.

Description

technical field [0001] The present invention relates to a touch apparatus and a display device, and in particular to an optical touch apparatus and an optical touch display apparatus. Background technique [0002] With the advancement of optoelectronic technology, the method of using the mouse to control the objects in the computer and the screen can no longer meet the needs of users. Therefore, a more humanized method than mouse control is gradually developed. Among these humanized methods, the way of finger touch is the closest to the experience of human beings in daily life, especially for the elderly or children who cannot flexibly operate the mouse, they can easily use fingers to touch, This is partly evidenced by the fact that some ATMs have adopted touch screens. [0003] In addition, if a traditional notebook computer does not have an external mouse, the cursor is usually controlled through a touchpad and a track point located next to the buttons. However, for gene...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/042G09F9/00
Inventor 臧志仁廖俊谦祝煜伦连正仪
Owner CORETRONIC
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