Light conducting plate and electronic products using the said plate

Abstract

A light board used for leading light for a keyboard is provided in the invention. The keyboard includes several keys. The light board includes many bores corresponding to the key and a permitting place area which includes permitting hole to receive the light source. Because at least one direction of thickness of the light board decreases following the direction far from the permitting place area. The permitting hole is in the permitting place area. So the light send from the light is leaded to the bottom of the key, so one light source can make all keys illuminate, it can decrease the light source number and decrease the energy cost.

Description

【Technical field】 [0001] The invention relates to a light guide plate, in particular to a light guide plate which provides illumination for keys of electronic products. 【Background technique】 [0002] In the design of electronic products, such as mobile phones, in order to make them usable in the dark, mobile phone button lighting devices are often used. The lighting devices generally use light-emitting diodes (Light-Emitting Diode, hereinafter referred to as LEDs) The LED is placed on the PCB board of the mobile phone, and the light emitted by the LED is directly directed to the position of the button number. Therefore, in order to make each button emit a uniform brightness, the number of LEDs has different requirements depending on the design. , Generally, at least 4-5 pieces are needed. This design not only increases the cost, but also increases the overall power consumption of the mobile phone. [0003] In order to reduce costs, the form of a light guide plate can be us...

AI Technical Summary

Problems solved by technology

The light guide plate 50 needs to use a convex lens 70, thereby increasing the manufacturing difficulty. Although the light guide plate 50 can illuminate the key 60, it still needs a plurality of LEDs, so that the power consumption of the mobile phone is still relatively large.

In addition, the luminance of the keys 60 close to the LED area is too high, which leads to uneven distribution of luminance on the entire mobile phone keyboard, which brings inconvenience to users.

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