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Backlight device and light-emitting keyboard

A technology of backlight device and illuminated keyboard, applied in the direction of electrical components, electrical switches, circuits, etc.

Active Publication Date: 2014-10-08
DARFON ELECTRONICS (SUZHOU) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the required area of ​​the flexible circuit board 12 used in this prior art still has room for improvement.

Method used

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  • Backlight device and light-emitting keyboard
  • Backlight device and light-emitting keyboard
  • Backlight device and light-emitting keyboard

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] see figure 2 , which is an expanded view of the components of the light-emitting keyboard according to a preferred embodiment of the present invention, figure 2 A luminous keyboard 2 of a preferred embodiment of the present invention is schematically shown in an expanded view of components.

[0035] Such as figure 2 As shown, the luminous keyboard 2 of the present invention includes a substrate 22 , a backlight device 3 of the present invention and a keyboard portion 20 . The backlight device 3 is disposed on the substrate 22 , and the keyboard portion 20 is disposed on the backlight device 3 . The keyboard part 20 includes a plurality of keys 202 . The light emitted from the front surface 320 of the light guide plate 32 of the backlight device 3 is directed toward the plurality of keys 202 .

[0036] see figure 2 , image 3 and Figure 4 . image 3 A light emitting device 34 according to a specific embodiment of the present invention is schematically shown ...

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PUM

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Abstract

The invention relates to a backlight device and a light-emitting keyboard. The backlight device serving as a good specific embodiment comprises a light guide plate, a light-emitting device and a plurality of light turning structures. A plurality of openings are formed in the light guide plate and close to one side of the light guide plate. The front side of the light guide plate is provided with a plurality of light outlet zones. Light emitted by a plurality of light sources is irradiated into the light guide plate from incidence faces of the corresponding openings. A plurality of light turning structures are arranged on the back side of the light guide plate and used for guiding the light irradiated towards the light turning structures to the front side of the light guide plate and further reflecting the light from the back side and the front side of the light guide plate and other light outlet zones. The backlight device is provided with a decreased number of light sources and a small-area circuit board.

Description

technical field [0001] The present invention relates to a backlight apparatus (backlight apparatus) and an illuminated keyboard (illuminated keyboard) comprising the backlight apparatus, and in particular to a backlight apparatus having a reduced number of light sources, a small-area circuit board and avoiding dark areas, and comprising the The keyboard part of the backlight unit. Background technique [0002] Illuminated keyboards have become a common input peripheral device on the market. In the current backlight device used for luminous keyboards, in some prior art, a large number of light sources (usually light-emitting diodes) are arranged along a long side of the light guide plate. However, this prior art not only uses a large number of light sources, but also requires a large area for the flexible circuit board on which the light sources are fixed. [0003] In some prior art, the light sources are arranged along a short side of the light guide plate. However, there...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H13/83
Inventor 何信政何宣纬戴宏宇
Owner DARFON ELECTRONICS (SUZHOU) CO LTD