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Light guide plate combination

A light guide plate and shielding plate technology, which is applied in light guides, optics, optical components, etc., can solve problems such as the inability to uniformize the LED light source, affect the overall lighting effect of the light guide plate combination, and sting the user's eyes, so as to improve the lighting effect and comfort

Inactive Publication Date: 2009-10-21
STATE GRID TIANJIN ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although the light guide plate combination can transmit the brightness of the LED point light source to each key, so as to realize the illumination of each key, the general light guide plate combination cannot completely uniform the light of the LED light source.
The specific performance is: the brightness of the light guide plate combination with LED light source is obviously higher than the brightness of other places without LED light source, so that a bright spot is formed at the LED light source, thereby destroying the harmony of the overall lighting of the light guide plate combination and affecting the light guide plate combination. overall lighting effect
In addition, the bright spot at the LED light source may also sting the user's eyes

Method used

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Embodiment Construction

[0009] The light guide plate assembly of the present invention is suitable for portable electronic devices such as mobile phones and personal digital assistants (PDAs). In this embodiment, the light guide plate assembly for mobile phones is taken as an example for illustration.

[0010] see figure 1 , the mobile phone 100 includes a circuit board 10 and a light guide plate assembly 20 . The light guide plate assembly 20 is disposed (such as screwed) on the circuit board 10 .

[0011] The circuit board 10 is substantially a square plate, and includes a surface 12 facing the light guide plate assembly 20 . Several light sources 14 are arranged on the surface 12 . The light source 14 may be a light-emitting diode (light-emitting diode, LED for short). The light source 14 is accommodated in the light guide plate assembly 20, and the light emitted by the light source 14 is transmitted through the light guide plate assembly 20 to the place where the mobile phone 100 needs to be i...

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Abstract

The invention provides a light guide plate combination, which comprises a light guide plate provided with a plurality of light source holes; the light guide plate combination also comprises a shield which is arranged on the light guide plate so as to shield the light source holes.

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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/00H04M1/02
CPCG02B6/0021
Inventor 曹金啼
Owner STATE GRID TIANJIN ELECTRIC POWER