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US 12,205,782 B2Granted
Circuit structure, backlight module and light-emitting key device using the same
AssigneesLite-On Electronics (Guangzhou) Limited, Lite-On Technology Corporation
InventorsChing-Lung Cheng, Chin-Chia Hsu
Life of this patent
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Abstract
A circuit structure includes a light-transmissive insulation layer, a patterned conductive layer and an electronic component. The patterned conductive layer is disposed on the light-transmissive insulation layer. The electronic component is disposed on the patterned conductive layer and electrically connected to the patterned conductive layer.
Claims16
A backlight module, comprises:
- a light guide plate having a light-exit surface and an opposite surface opposite to the light-exit surface;
- a circuit structure comprising:
- a light-transmissive insulation layer;
- a patterned conductive layer disposed on the light-transmissive insulation layer;
- an electronic component disposed on the patterned conductive layer and electrically connected to the patterned conductive layer, wherein the electronic component is a light-emitting component;
- a protection layer covering the electronic component;
- and
- a pad layer disposed between the protection layer and the patterned conductive layer and surrounding the electronic component;
- and
- a protection sheet;
- wherein the circuit structure is disposed on one of the light-exit surface and the opposite surface, and the protection sheet is disposed on another of the light-exit surface and the opposite surface;
- wherein the light-transmissive insulation layer is formed of a light-transmissive material;
- wherein the electronic component is disposed between the patterned conductive layer and the protection layer;
- wherein the electronic component is a light-emitting element, and the protection sheet overlaps a keycap up and down.
11 more elements
A light-emitting key device, comprises:
- a backlight module, comprises:
- a light guide plate having a light-exit surface and an opposite surface opposite to the light-exit surface;
- a circuit structure comprising:
- a light-transmissive insulation layer;
- a patterned conductive layer disposed on the light-transmissive insulation layer;
- an electronic component disposed on the patterned conductive layer and electrically connected to the patterned conductive layer, wherein the electronic component is a light-emitting component;
- a protection layer covering the electronic component;
- and
- a pad layer disposed between the protection layer and the patterned conductive layer and surrounding the electronic component;
- and
- a protection sheet;
- wherein the circuit structure is disposed on one of the light-exit surface and the opposite surface, and the protection sheet is disposed on another of the light-exit surface and the opposite surface;
- wherein the light-emitting key device further comprises:
- a keycap;
- and
- a lifting mechanism disposed between the backlight module and the keycap;
- wherein the light-transmissive insulation layer is formed of a light-transmissive material;
- wherein the electronic component is disposed between the patterned conductive layer and the protection layer;
- wherein the electronic component is a light-emitting element, and the protection sheet overlaps the keycap up and down.
16 more elements
Dependencies are inferred from the claim text.