Backlit keyboard using two thin-film circuit boards
First Claim
Patent Images
1. A direct-backlit keyboard, comprising:
- a plurality of keys;
a thin film circuit board;
a base plate;
a light-diffusing sheet;
a reflector sheet;
a copper etched thin-film circuit board; and
a plurality of light-emitting units disposed under the copper etched thin-film circuit board,wherein each key is disposed on the thin film circuit board, the thin film circuit board being disposed on the copper etched thin film circuit board, the copper etched thin-film circuit board being disposed on the base plate;
wherein each light-emitting unit corresponds to each key respectively in a manner such that light emitted from each light-emitting unit is transmitted to each corresponding key; and
wherein the light-diffusing sheet and the reflector sheet are disposed between the base plate and the copper etched thin-film circuit board, the reflector sheet being disposed on the base plate and under the light-diffusing sheet, the reflector sheet being a monolayer reflector sheet made of white organic resin.
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Accused Products
Abstract
A direct-backlit keyboard is disclosed, the direct-backlit keyboard comprising a plurality of keys, a thin film circuit board, a base plate, a copper etched thin-film circuit board, and a plurality of light-emitting units. The plurality of keys are disposed on the thin film circuit board, the thin film circuit board being disposed on the base plate, the base plate being disposed on the copper etched thin-film circuit board, and the copper etched thin film circuit board being provided with the plurality of light-emitting units. Each light-emitting unit corresponds to each key so that the light emitted from each light-emitting unit can be transmitted to each corresponding key.
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Citations
12 Claims
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1. A direct-backlit keyboard, comprising:
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a plurality of keys; a thin film circuit board; a base plate; a light-diffusing sheet; a reflector sheet; a copper etched thin-film circuit board; and a plurality of light-emitting units disposed under the copper etched thin-film circuit board, wherein each key is disposed on the thin film circuit board, the thin film circuit board being disposed on the copper etched thin film circuit board, the copper etched thin-film circuit board being disposed on the base plate; wherein each light-emitting unit corresponds to each key respectively in a manner such that light emitted from each light-emitting unit is transmitted to each corresponding key; and wherein the light-diffusing sheet and the reflector sheet are disposed between the base plate and the copper etched thin-film circuit board, the reflector sheet being disposed on the base plate and under the light-diffusing sheet, the reflector sheet being a monolayer reflector sheet made of white organic resin.
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2. A direct-backlit keyboard, comprising:
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a plurality of keys; a thin film circuit board; a base plate; a copper etched thin-film circuit board; a plurality of light-emitting units disposed on the copper etched thin-film circuit board; a light-shielding layer; and a reflector sheet; wherein each key is disposed on the thin film circuit board, the thin film circuit board being disposed on the base plate, the base plate being disposed on the copper etched thin-film circuit board, and wherein each light-emitting unit corresponds to each key respectively in a manner such that light emitted from each light-emitting unit is transmitted to each corresponding key wherein the light-shielding layer being disposed on the reflector sheet and the plurality of the light-emitting units, the reflector sheet being disposed on the copper etched thin-film circuit board. - View Dependent Claims (3)
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4. A direct-backlit keyboard, comprising:
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a plurality of keys; a thin film circuit board; a base plate; a light-diffusing sheet; a reflector sheet; a copper etched thin-film circuit board; and a plurality of light-emitting units disposed on the copper etched thin-film circuit board, wherein each key is disposed on the thin film circuit board, the thin film circuit board being disposed on the base plate, the base plate being disposed on the copper etched thin-film circuit board; wherein each light-emitting unit corresponds to each key respectively in a manner such that light emitted from each light-emitting unit is transmitted to each corresponding key; and wherein the light-diffusing sheet and the reflector sheet are disposed between the base plate and the copper etched thin-film circuit board, the reflector sheet being disposed on the copper etched thin-film circuit board and under the light-diffusing sheet, the reflector sheet being a monolayer reflector sheet made of white organic resin. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12)
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Specification