Light guide plate combination

Abstract

The invention provides a light guide plate combination, which comprises a light guide plate and a shadowing part comprising a framework; the framework surrounds a containing room; the light guide plate is contained in the containing room of the shadowing part; and the framework is formed on the periphery wall of the light guide plate.

Description

technical field [0001] The invention relates to a combination of light guide plates, in particular to a combination of light guide plates applied to portable electronic devices. Background technique [0002] In the design of mobile phones, in order to make them usable in the dark, the key lighting design of mobile phones is often used. Generally, light-emitting diodes (light-emitting diodes, hereinafter referred to as LEDs) are used as light sources, and the LEDs are placed on the PCB board of the mobile phone. Directly irradiate the desired light on the button number, so to make each button have a uniform brightness due to the illumination of the LED, the control of the number of LEDs will have different requirements depending on the design. Generally, a larger number of LEDs is required, which not only increases the cost, but also increases the overall power consumption of the mobile phone. In order to reduce the number and cost of LED light sources and obtain a uniform l...

AI Technical Summary

Problems solved by technology

However, because the light guide plate is generally made of transparent materials, when the light emitted by the LED light source passes through the light guide plate, the light emitted by the LED light source will be guided by the surrounding wall of the light guide plate, that is, light leakage occurs in the light guide plate.

In addition, since the brightness of the light emitted by the LED light source is constant, the light guided by the surrounding wall of the light guide plate will inevitably reduce the brightness of the light transmitted by the light guide plate, thereby affecting the light guiding effect of the light guide plate.

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