Keyboard back light device and its method

A keyboard backlight and backlight technology, applied to electrical components, electric switches, circuits, etc., can solve the problems of non-adjustable color and brightness, lack of flexibility, limited colors, etc., to increase fashion and interest, and change monotony , the effect of convenient change
CN1763879AInactive Publication Date: 2006-04-26INSPUR LG DIGITAL MOBILE COMMUNICATIONS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
INSPUR LG DIGITAL MOBILE COMMUNICATIONS CO LTD
Publication Date
2006-04-26
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a keyboard backlight device, which comprises: at least one LED on around every light point, a LED driver, a LED drive and control unit to output impulse modulation signal to control output voltage or current of LED driver and regulate brightness, and keyboard backlight set device connected to drive unit to control modulation signal. This invention changes monotonicity of keyboard backlight, increases fashion and interesting to mobile phone.
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Description

technical field

[0001] The invention relates to a keyboard component, in particular to a keyboard backlight device and a method thereof. Background technique

[0002] When most users choose electronic products, they not only pay attention to their functions, but also the fashion and interest of the products, especially in the pursuit of color, and the backlight of the mobile terminal keyboard is an aspect of displaying product color. Mobile terminals, especially mobile phones, usually have a backlight function, so that the keyboard can be operated correctly and conveniently even in darkness or low light. Initially, the backlight of the keypad of the mobile phone was a single color, such as blue, orange, green, amber and so on. However, the backlight display of a single color has become very monotonous, and it is difficult to attract the attention of users. Therefore, in order to attract more users, a mobile phone keyboard backlight that can display several colors has appear...

Claims

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