Touch screen

Abstract

The invention discloses a touch screen. The touch screen comprises a rectangular display screen, a rectangular touch positioning frame and a computer mainframe. A horizontal projection of the touch positioning frame to the display screen is that the display screen is positioned in the touch positioning frame, namely the touch positioning frame is positioned around the display screen. A laser emitter array is arranged in each of two adjacent borders of the touch positioning frame to form laser emission borders; a laser receiver array is arranged in each of the other two adjacent borders of the touch positioning frame to form laser receiving frames. The laser emission borders and the laser receiving borders are opposite pairwise, the touch positioning borders are in two-way communication with the computer mainframe to transmit positioning position information or original data acquired by the touch positioning frame. The touch screen has the advantages that stability touch control on the large screen can be realized, actual touch of the display screen is not needed, and touch control can be realized flexibly.

Description

technical field [0001] The invention relates to a touch screen. Background technique [0002] With the popularization of touch screen technology in the application of handheld electronic devices, the requirement for intuitive control is also getting higher and higher. The smart phones that people can see now have all developed towards the touch screen, including tablet computers, e-books and so on. The traditional piezoresistive touch screen needs to exert a certain force on the screen to achieve touch control. Since the force of each person is inconsistent, there will be insufficient sensitivity in the control; the capacitive touch screen is more sensitive than the traditional piezoresistive sensor. It has been widely used in mainstream touch products. [0003] The above two different touch screen implementation principles have the following points in common: the sensor is directly below the screen, and the size of the screen requires a large sensor array, which is limite...

AI Technical Summary

Problems solved by technology

The traditional piezoresistive touch screen needs to exert a certain force on the screen to achieve touch control. Since the force of each person is inconsistent, there will be insufficient sensitivity in the control; the capacitive touch screen is more sensitive than the traditional piezoresistive sensor. Widely used in mainstream touch products

[0003] The above two different touch screen implementation principles have the following common points: the sensor is located directly below the screen, and the size of the screen requires a large sensor array, which is limited in terms of cost and experience in large-screen applications

At the same time, it requires the user to have close contact with the screen, which is not conducive to flexible application in specific occasions

For example, in terms of teaching, how to realize the easy control of the pointer on the large-screen projection screen will be a challenge to the traditional touch screen control mechanism

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