Patent ID: 11914832
Assignee: TONG LUNG METAL INDUSTRY CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 10:
11. A membrane touch panel device comprising:
a circuit board unit, an opaque light-blocking frame plate, a plurality of opaque light-blocking tabs, and an operation panel unit that are stacked along a front-rear direction;
wherein said circuit board unit includes a circuit board having a plurality of keypad circuits that are disposed on a front side of said circuit board, and a plurality of LEDs being electrically connected to said front side of said circuit board;
wherein said light-blocking frame plate is stacked on said front side of said circuit board, and defines a hollow section provided for said LEDs to protrude forwardly thereinto;
wherein said light-blocking tabs are connected to a front side of said light-blocking frame plate such that said light-blocking tabs respectively cover said LEDs;
wherein said operation panel unit is fixedly stacked on said front side of said light-blocking frame plate, and has a plurality of key segments that are respectively aligned with said keypad circuits along the front-rear direction, and that are adapted to permit light generated by said LEDs and emitted through said hollow section to pass forwardly therethrough; and
wherein said circuit board unit further includes a plurality of buttons respectively disposed on said keypad circuits of said circuit board, and a fixing plate module stacked on said front side of said circuit board, configured for positioning said buttons to said circuit board, and having a plurality of through holes that are respectively provided for said LEDs to protrude forwardly therethrough, said light-blocking frame plate being stacked on a front side of said fixing plate module with said buttons and said LEDs being exposed from said hollow section thereof, each of said key segments being aligned with a respective one of said buttons, and being pressable to push said respective one of said buttons.