Illuminated keyboard
AssigneePrimax Electronics Ltd.
InventorChung-Yuan Chen
Life of this patent
Estimating the term…
Abstract
An illuminated keyboard includes a key structure and a backlight membrane switch board. The backlight membrane switch board includes a light source, a light guide plate, a wiring plate, and a partition plate. The light guide plate includes a first circuit layer. The wiring plate includes a second circuit layer and a light source circuit layer. The electrical connection between the first circuit layer and the second circuit layer results in a key signal. The light source circuit layer is used for driving the light source. Since the first circuit layer is disposed on the light guide plate, less amount of substrates is required and the illuminated keyboard is slim. Moreover, since the second circuit layer and the light source circuit layer have a shared pin, the ease of assembling the backlight membrane switch board is enhanced.
Claims16
An illuminated keyboard, comprising:
- a key structure, wherein when said key structure is depressed, a key signal is correspondingly triggered;
- and
- a backlight membrane switch board for generating said key signal and emitting a light beam to said key structure, wherein said backlight membrane switch board comprises:
- a light source for emitting said light beam;
- a light guide plate for transferring said light beam, wherein said light guide plate comprises a first circuit layer;
- a wiring plate comprising a second circuit layer and a light source circuit layer, wherein said light source circuit layer is electrically connected with said light source for driving said light source;
- and
- a partition plate arranged between said light guide plate and said wiring plate, wherein as said key structure is depressed, said first circuit layer of said light guide plate and said second circuit layer of said wiring plate are contacted with each other to generate said key signal.
Dependencies are inferred from the claim text.