Keyboard backlight module

Abstract

The invention discloses a keyboard backlight module, which comprises a PCBA, a reflecting layer, a light guide plate and a light shielding layer, wherein the PCBA, the reflecting layer, the light guide plate and the light shielding layer are sequentially arranged, the reflecting layer and the light guide plate are both provided with coaxial through holes, and the light shielding layer is provided with light transmitting holes coaxial with the through holes; the PCBA is provided with a light source which is located below the axis of the through hole of the reflecting layer. The holes are formed in the PCB, the LED lamps are welded to the back face of the PCB, the LED lamps are hidden in the light source holes of the PCB, then the holes of the reflecting layer, the light guide plate and the light shielding layer are formed, the holes of the reflecting layer, the light guide plate and the light shielding layer are concentric with the holes of the PCB, light enters the LED lamps from the cross section of the light guide plate, and therefore the key cap can emit light evenly; the problem that an existing keyboard backlight module is uneven in light emitting is perfectly solved. In addition, by means of the keyboard backlight module, the thickness of an existing mass-produced game notebook computer backlight module can be greatly reduced.

Description

technical field [0001] The invention relates to the technical field of computers, in particular to a keyboard backlight module. Background technique [0002] As one of the indispensable input devices for computers, the keyboard is mainly used to input characters, symbols or numbers. Existing keyboards generally include a support plate, a middle plate arranged on the support plate, a conductive film arranged on the middle plate, a plurality of scissor feet installed on the middle plate, keycaps installed on the plurality of scissor feet, and Multiple silicone rings are arranged between multiple keycaps and the conductive film. When performing input operations, pressing the keycap causes the corresponding silicone ring to press the conductive film to generate a signal. The scissors are used to maintain the balance of the movement of the mechanism when the keycap is pressed. sex. [0003] As computers become more and more popular, users will use computers in various environme...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a keyboard backlight module, which solves the problem that the key characters of the existing keyboard backlight module have poor luminous uniformity, only the characters in the middle of the keys above the light-emitting diodes are very bright, and the characters at the corners of the keys are not bright or very bright. Dark, forming a significant gap with the brightness of the characters in the middle of the key, the brightness consistency of the entire keyboard is not good, and it is difficult to meet the needs of consumers

The light source can emit light toward the light guide plate, and the cross section of the light guide plate can receive the light from the light source horizontally, and guide the received light to be transmitted to the distance, so that the transmitted light can pass upward through the light-transmitting hole of the light-shielding layer and enter the keycap area, thereby Provide backlight for the keycap area, illuminate the characters on the keycap, make the keycap emit light evenly, perfectly solve the problem of uneven light emission existing in the existing keyboard backlight module, and meet the needs of users for the keyboard backlight module

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