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US 7,677,781 B2Granted
Sheet switch module
AssigneesCitizen Electronics Co., Ltd., Fuji Polymer Industries Co., Ltd.
InventorsKazuya Ishihara, Kosuke Tsuchiya, Akira Watanabe
Life of this patent
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Abstract
A sheet switch module including a circuit board (22), at least one key switch (25) disposed on the circuit board, and a flexible light guiding sheet (31) which is disposed on the key switch and configured to cover the circuit board, the light guiding sheet being configured to flexibly fit over and follow the shape of the key switch along an outer surface of the key switch, when the light guiding sheet is disposed on the circuit board.
Claims13
A sheet switch module, comprising:
- a circuit board;
- at least one key switch disposed on the circuit board;
- and
- a flexible light guiding sheet which is disposed on the key switch and configured to cover an upper surface of the circuit board,
- wherein the key switch has a fixed contact formed on the circuit board and a semi-spherical movable contact disposed to entirely cover above the fixed contact, and
- wherein the light guiding sheet is disposed to flexibly fit over and follow along an outer surface of the semi-spherical movable contact, when the light guiding sheet is disposed on the circuit board.
3 more elements
A sheet switch module, comprising:
- a circuit board;
- at least one key switch disposed on the circuit board;
- a fixing sheet disposed on the circuit board and the key switch;
- and
- a flexible light guiding sheet disposed on the fixing sheet,
- wherein the key switch has a fixed contact formed on the circuit board and a semi-spherical movable contact disposed to cover above the fixed contact, and
- wherein the light guiding sheet is disposed on an upper surface of the fixing sheet to flexibly fit over and follow a shape of an outer surface of the semi-spherical movable contact on the circuit board, so that the fixing sheet reflects a light guided through the light guiding sheet at a position of the semi-spherical movable contact.
4 more elements
Dependencies are inferred from the claim text.