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Key component and portable electronic device with key component

A key and component technology, applied in circuits, electrical switches, electrical components, etc., can solve problems such as light leakage and affecting the lighting effect of keys

Active Publication Date: 2014-12-17
南通享鑫机电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since there is usually an assembly gap between the key panel and the casing of the mobile phone, after the light emitted by the LED light source is exported through the light guide plate, part of the light is transmitted through the assembly gap, that is, light leakage occurs.
In addition, because the brightness of the light emitted by the LED light source is certain, because part of the light penetrates through the assembly gap, it will inevitably affect the lighting effect of the key.

Method used

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  • Key component and portable electronic device with key component
  • Key component and portable electronic device with key component
  • Key component and portable electronic device with key component

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0041] The invention discloses a key assembly, which is suitable for portable electronic devices such as mobile phones and PDAs. In this embodiment, a key assembly applied to a mobile phone is taken as an example for description.

[0042] See figure 1 , figure 2 and Figure 5 , The mobile phone 100 includes a circuit board 10, a button assembly 20 and a casing 30. The button assembly 20 is disposed on the circuit board 10, and the circuit board 10 is disposed in the casing 30.

[0043] The circuit board 10 is provided with a plurality of arc-shaped trigger shrapnel 12 and a plurality of light sources 13. In this embodiment, the light source 13 is a light emitting diode (LED).

[0044] The button assembly 20 includes a soft rubber plate 21, a transparent light guide plate 23, a shielding member 25, a button plate 27 and a flexible light shield 29.

[0045] The rubber plate 21 includes a first surface 211 facing the circuit board 10 (see figure 2 ) And a second surface 213 opposite t...

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PUM

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Abstract

The invention provides a key component and a portable electronic device with the key component. The key component comprises a soft rubber plate, a transparent light guide plate, a light-tight shading piece, a keypad and a light-tight soft occulter, wherein a plurality of pressing parts protrude from the rubber plate; a plurality of key holes are formed on the light guide plate corresponding to the pressing parts; the shading piece is coated on the peripheral wall of the light guide plate; the pressing parts pass through the key holes and are pressed against the keypad; and the soft occulter is arranged between the keypad and the shading piece.

Description

Technical field [0001] The present invention relates to a key assembly, in particular to a key assembly applied to a portable electronic device. Background technique [0002] In the mobile phone design, in order to make it usable in the dark, the mobile phone button lighting design is often used. Generally, light-emitting diodes (hereinafter referred to as LED) are used as the light source, and the LED is placed on the mobile phone PCB board. It shoots directly to the required light on the key number, so each key must be able to have uniform brightness due to the illumination of the LED. The number of LEDs is controlled by different designs and there are different requirements. Generally, a larger number of LEDs are 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 light source, light guide plates are often used to transmit and homogen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H13/83H04M1/22
Inventor 涂锋
Owner 南通享鑫机电科技有限公司