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Keypad lighting device for portable terminal

一种照明装置、键盘的技术，应用在用户/计算机交互的输入/输出、电话机结构、仪器等方向，能够解决困难等问题

Inactive Publication Date: 2013-08-21
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, conventional direct-type keyboard lighting basically struggles to illuminate all keytops evenly

Method used

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  • Keypad lighting device for portable terminal
  • Keypad lighting device for portable terminal
  • Keypad lighting device for portable terminal

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0028] The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of exemplary embodiments of the present invention as defined by the claims and their equivalents. The description that has been made includes various specific details to aid in understanding, but these are to be regarded as exemplary only. Accordingly, those of ordinary skill in the art will recognize that changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. Also, a detailed description of well-known functions and constructions incorporated herein will be omitted for clarity and conciseness since the detailed description may obscure the gist of the present invention.

[0029] Figure 7A to Figure 9BThe main part of the edge type keyboard lighting device according to the exemplary embodiment is shown drawn on an enlarged scale, in which the distance between the ligh...

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PUM

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Abstract

A keypad lighting device includes: a keypad member formed by an arrangement of plural key tops; at least one light emitting device arranged below the key pad member; and a light guide plate member arranged below the keypad member to light the key tops with light projected from the light emitting device. The light guide plate member is formed with at least one light-incident surface, to which the light projected from the light emitting device is incident. The light-incident surface is formed by a curved surface or plural inclined surfaces, and at least one of the normal lines of the light-incident surface is arranged to pass through the light emitting surface of the light emitting device.

Description

technical field [0001] The present invention relates to a portable terminal, and more particularly, to a keyboard illuminating device. Background technique [0002] In general, portable terminals such as portable computers and mobile communication terminals include a physical keyboard as an input device. Usually such portable terminals are provided with lighting devices in keypads to allow users to easily operate input devices in use environments (especially, even at night or in dimly lit rooms). Terminals that are often used while being carried by users (eg, mobile communication terminals) have been equipped with keypad lighting devices, and recently, terminals that are not usually carried by users (eg, portable computers) have also begun to be provided with keypad lighting devices. Such keypad lighting devices are also provided in corded phones, digital door locks, remote controls for home appliances, and the like. [0003] A general mobile communication terminal is equi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04M1/22G06F3/02
CPCH04M1/22G06F1/1662H01L33/00H01H13/83
Inventor 金秉宣
Owner SAMSUNG ELECTRONICS CO LTD
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