US 2018/0025858 A1Published application

Light emitting keyswitch

AssigneeDarfon Electronics Corp.

InventorsChin-Hung Lin, Liang-Ta Yeh

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Abstract

A light emitting keyswitch includes a board, a cap, a lifting mechanism disposed between the board and the cap, a membrane switch including first and second substrates, an LED, and a transparent hollow elastic body. The first substrate has a first outer surface and a first inner surface. The second substrate has a second outer surface and a second inner surface. A switch circuit is disposed between the first and second inner surfaces. A copper circuit is formed on the second inner surface. A hole is formed on the first substrate. The LED is disposed on the second substrate, passes through the hole and is coupled to the copper circuit. The transparent hollow elastic body is attached to the first outer surface for covering the LED and the hole and is located under the cap. When the cap is pressed, the lifting mechanism or the cap triggers the switch circuit.

Claims16

Dependent claims

A light emitting keyswitch comprising:

a board;
a cap;
a lifting mechanism disposed between the board and the cap, the cap being movable between a pressed position and a non-pressed position relative to the board via the lifting mechanism;
a membrane switch comprising first and second substrates, the first substrate having a first outer surface and a first inner surface, the second substrate having a second outer surface and a second inner surface, a switch circuit being disposed between the first inner surface and the second inner surface, a copper circuit being formed on the second inner surface, a hole being formed on the first substrate;
an LED disposed on the second substrate and coupled to the copper circuit for emitting light by control of the copper circuit, the LED passing through the hole;
and
a transparent hollow elastic body located under the cap, a bottom of the transparent hollow elastic body being attached to the first outer surface to cover the LED and the hole;
wherein when the cap is pressed to the pressed positon, the lifting mechanism or the cap triggers the switch circuit.

5 more elements

A light emitting keyswitch comprising:

a board;
a cap;
a lifting mechanism disposed between the board and the cap, the cap being movable between a pressed position and a non-pressed position relative to the board via the lifting mechanism;
a membrane switch comprising first and second substrates, the first substrate having a first outer surface and a first inner surface, the second substrate having a second outer surface and a second inner surface, a switch circuit being disposed between the first inner surface and the second inner surface, a copper circuit being formed on the first inner surface;
an LED disposed on the first substrate and coupled to the copper circuit on the first outer surface for emitting light by control of the copper circuit;
a transparent hollow elastic body located under the cap, a bottom of the transparent hollow elastic body being attached to the first outer surface to cover the LED and the hole;
and
a protection layer covering the first outer surface;
wherein when the cap is pressed to the pressed positon, the lifting mechanism or the cap triggers the switch circuit.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/652,266Filed 18 Jul 2017
Priority: TW 10512280620 Jul 2016
Published: 25 Jan 2018
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

H01H 13/023
Details: light-emitting indicators
H01H 3/125
With enlarged actuating area, e.g. of the elongated bar-type; Stabilising means therefor: using a scissor mechanism as stabiliser
H01H 13/04
Details: cases; Covers
H01H 13/14
Movable parts; Contacts mounted thereon: operating parts, e.g. push-button

Family

No related US applications are recorded in the indexed filing history.

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