Thinned dustproof waterproof infrared touch module

Abstract

The invention discloses a thinned dustproof waterproof infrared touch module, comprising a plurality of infrared transmitting tubes, a plurality of infrared receiving tubes, a PCB (printed circuit board) and a light guide strip that is solid and that is pasted to the periphery of the upper surface of screen protective screen; the outer side of the light guide strip is 45 degrees angled to the screen protective glass; a reflecting layer is attached to the outer side of a light guide part; an infrared transmitting tube bundle composed of the infrared transmitting tubes and an infrared receivingtube bundle composed of the infrared receiving tubes are arranged symmetrically on two sides of the axis of the screen protective glass; the PCB is positioned at the bottom of the infrared transmitting tubes and the infrared receiving tubes and is in signal connection with the corresponding infrared transmitting tubes and infrared receiving tubes; the mounting positions of the infrared transmitting tube bundle and the infrared receiving tube bundle on the lower surface of the screen protective glass are subject to the condition where their optical signals may reach the reflecting layer and theincluded angle between incoming light and the surface of the reflecting layer is 45 degrees; a shade layer is printed on the front of the light guide strip, the front of the reflecting layer and theouter side of the reflecting layer.

Description

technical field [0001] The invention relates to the field of multimedia equipment, in particular to a thinning, dustproof, waterproof, and infrared touch module. Background technique [0002] Traditional infrared touch LCD screen such as figure 1 It is necessary to install a screen protection glass 2' in front of the fragile LCD screen 1', and then install the infrared sensor module 3' on the side of the screen protection glass. However, because the screen protection glass and the LCD screen are directly attached The generation of air bubbles leads to the scrapping of the screen, and the larger the screen, the higher the screen scrap rate. Therefore, the current process is to make the screen protective glass into a protective glass metal frame structure with an integrated infrared sensing module and cover the LCD screen. As the size of the LCD screen increases, the protective glass becomes thicker and heavier, and the metal frame supporting the glass becomes thicker and hea...

AI Technical Summary

Problems solved by technology

The full bonding of the patented screen protection glass and the LCD screen solves the problem that the current frame-mounted screen protection glass is easily broken and hurts people. Since the gap between the two glass components is eliminated, the two pieces of glass are bonded into one glass to enhance the touch. The strength of the glass further improves the image clarity, and at the same time avoids the defects that the screen is easy to be fogged and moldy, but it does not realize the thinning of the infrared sensor module, and the sealing of the frame is difficult to guarantee

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