Touch display device

Abstract

A touch display device comprises a flat display component, an induction signal transceiving module, a control module and a casing. The induction signal transceiving module is circularly arranged on the periphery of the flat display component, the flat display component, the induction signal transceiving module and the control module are all packaged in the casing, the flat display component comprises a liquid crystal displayer, the induction signal transceiving module comprises a plurality of induction signal transceiving pair pipes and a printed circuit board, and the plurality of induction signal transceiving pair pipes are electrically connected onto the printed circuit board. The induction signal transceiving pair pipes comprise induction signal emitting pipes and induction signal receiving pipes, the printed circuit board is circularly arranged on the periphery of the liquid crystal displayer, the printed circuit board is perpendicular to a liquid crystal displayer panel, and the induction signal transceiving pair pipes electrically connected with the printed circuit board are arranged on the front side of a display surface of the liquid crystal displayer.

Description

technical field [0001] The invention relates to the field of display and touch control, in particular to a touch-sensitive display device. Background technique [0002] For the convenience of operation, when people use a touch screen instead of a mouse or keyboard to work, we must first touch the touch screen installed on the front of the display with fingers or other objects, and then the system locates and selects information according to the icon or menu position touched by the finger. Input the touch screen by It consists of a touch detection component and a touch screen controller; the touch detection component is installed in front of the display screen to detect the user’s touch position and send it to the touch screen controller after receiving it; the main function of the touch screen controller is to receive touch information from the touch point detection device, And convert it into contact coordinates, and then send it to the CPU, and it can receive and execute t...

AI Technical Summary

Problems solved by technology

[0005] First, because the printed circuit board used to connect the infrared emitting tube and the infrared receiving tube is embedded around the flat panel display part, and the printed circuit board and the flat panel display part are arranged on the same plane, when packaging the flat panel display part When the outer frame of the type component is used, the outer frame needs to encapsulate the printed circuit board, so the size of the outer frame of the flat panel display component is correspondingly larger, so that the infrared touch display device is very thick;

[0006] Second, in order to make the infrared rays emitted and received by the infrared emitting tube and the infrared receiving tube parallel to the flat panel display components, the infrared emitting tube and the infrared receiving tube need to be bent and then soldered and installed on the printed circuit board, or first Soldering and installing on the printed circuit board, and then bending the feet, not only the process is complicated, but also the manufacturing cost is increased, and the life and stability of the infrared emitting tube and the infrared receiving tube may be affected after bending

As a result, it is difficult to use infrared touch technology on many ultra-thin and ultra-narrow displays

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