Light emitting sheet module
AssigneeCitizen Electronics Co., Ltd.
InventorsIsao Miyashita, Kenshi Aihara
Life of this patent
Estimating the term…
Abstract
A light emitting sheet module includes a light guiding sheet to cover a plurality of key switches, at least one LED disposed on at least one end portion of the light guiding sheet, and a circuit board disposed on the one end portion of the light guiding sheet on which the LED is disposed. When the light emitting sheet module is, mounted on a switch board, it is capable of adaptation to key switches in a wide variety of forms and to illuminate the key switches with light emission of high brightness.
Claims21
A light emitting sheet module, comprising:
- a light guiding sheet to cover a plurality of key switches;
- at least one light emitting diode disposed at least one end area of the light guiding sheet and in contact with a lower surface of the light guiding sheet;
- and
- a circuit board disposed at the one end area of the light guiding sheet and the light emitting diode disposed on the circuit board;
- the light guiding sheet including a light guiding area configured to cover the key switches and a raised portion formed integrally with the light guiding area at a position that covers the light emitting diode mounted on the circuit board.
A light emitting sheet module, comprising:
- a light guiding sheet including an upper surface, a lower surface opposite the upper surface, and the light guiding sheet having an end area and a light guiding area;
- at least one light emitting diode disposed at the end area in contact with the lower surface of the light guiding sheet to emit into the light guiding sheet toward the light guiding area;
- the light guiding sheet further including a raised part on the upper surface at a corresponding position where the light emitting diode is disposed.
A light emitting sheet module, comprising:
- a light guiding sheet including an upper surface, a lower surface opposite the upper surface, and the light guiding sheet having an end area and a light guiding area;
- a circuit board disposed under the lower surface of the light guiding sheet;
- at least one light emitting diode disposed on the circuit board and disposed in contact with the lower surface at the end area of the light guiding sheet;
- a plurality of key switches disposed in contact with the lower surface at the light guiding area of the light guiding sheet;
- the light guiding sheet further including a raised part at a corresponding position where the light emitting diode is disposed.
Dependencies are inferred from the claim text.