Keysheet module
First Claim
1. A keysheet module comprising:
- a one-sided printed circuit board having a plurality of wiring patterns formed on one side of said circuit board;
contact switches, LEDs for illuminating a keypad, and a switch fixing sheet covering an upper surface of the contact switches, all provided on said one-sided printed circuit board,wherein said keysheet module has at least one connecting wiring pattern whereby one wiring pattern of the plurality of wiring patterns is connected to at least one other non-adjacent wiring pattern of the plurality of wiring patterns, andwherein the connecting wiring pattern crosses at least one adjacent intervening wiring pattern which is covered by an insulating layer, and the connecting wiring pattern allows electrical connection by a conductive film jumper formed over said insulating layer.
1 Assignment
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Accused Products
Abstract
A keysheet module is provided which comprises: a one-sided printed circuit board having a plurality of wiring patterns formed on one side thereof; and contact switches, LEDs for illuminating a keypad, and electric elements such as resistors and capacitors, all provided on the one-sided printed circuit board; wherein an insulating layer is provided between predetermined, separate wiring patterns of the plurality of wiring patterns and a conductive film jumper is formed over the insulating layer to three-dimensionally connect the separate wiring patterns. With this arrangement, a degree of freedom of locating LEDs and electric elements is enhanced, improving a keypad illumination efficiency. The use of the conductive film jumper can reduce a thickness of the keysheet module.
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Citations
10 Claims
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1. A keysheet module comprising:
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a one-sided printed circuit board having a plurality of wiring patterns formed on one side of said circuit board; contact switches, LEDs for illuminating a keypad, and a switch fixing sheet covering an upper surface of the contact switches, all provided on said one-sided printed circuit board, wherein said keysheet module has at least one connecting wiring pattern whereby one wiring pattern of the plurality of wiring patterns is connected to at least one other non-adjacent wiring pattern of the plurality of wiring patterns, and wherein the connecting wiring pattern crosses at least one adjacent intervening wiring pattern which is covered by an insulating layer, and the connecting wiring pattern allows electrical connection by a conductive film jumper formed over said insulating layer. - View Dependent Claims (2, 3, 4, 5)
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6. A keysheet module comprising:
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a one-sided printed circuit board; contact switches, LEDs for illuminating a keypad, and a switch fixing sheet covering an upper surface of the contact switches, all provided on said one-sided printed circuit board; at least one set of first, second and third of wiring patterns formed on one side of said circuit board, said third wiring pattern extending between and being spaced from, said first and second wiring patterns; and at least one structure for connecting said first and second wiring patterns and crossing said third wiring pattern, wherein said structure comprises; an insulating layer covering said third wiring pattern; and a conductive film jumper formed over said insulating layer and conductively connecting said first and second wiring patterns together, said jumper being insulated from said third wiring pattern by said insulating layer-. - View Dependent Claims (7, 8, 9, 10)
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Specification