SUNREX TECHNOLOGY CORP.

A light-emitting module of an illuminated keyboard includes a reflector plate, a light guiding plate, a light shielding plate, a base plate, a thin film circuit board, and a light-emitting element. The light guiding plate is disposed on the reflector plate. The light shielding plate is disposed on the light guiding plate and includes a through hole and a first light-passing hole that is spaced apart from the through hole. The base plate is disposed on the light shielding plate and includes an accommodating hole that is aligned with the through hole and a second light-passing hole that is spaced part from the accommodating hole and that is aligned with the first light-passing hole. The thin film circuit board is disposed on the base plate. The light-emitting element is disposed on the thin film circuit board and extends into the accommodating hole.

A light emitting module includes a light-guiding plate disposed under a light-shielding plate that includes a light-shielding portion and a hollow unit. The light-guiding plate has a light-exiting surface, a bottom surface, and a light-entering surface unit. The light-exiting surface has a base portion and a light-mixing portion. The light-mixing portion is formed on the base portion, is disposed within the hollow unit, and has refracting segments. Each of the refracting segments extends and tapers upwardly from the base portion. A reflection plate is disposed under the bottom surface. A plurality of light emitting members are disposed below the light-shielding portion. The light-entering surface unit faces the light emitting members.

A light emitting keyboard includes a support plate having first and second plate portions, a membrane circuit board, a flexible circuit board electrically connected to the membrane circuit board, a backlight module disposed under the first plate portion, and a plurality of key modules disposed on top of the membrane circuit board. The membrane circuit board includes a lower circuit membrane disposed on top of the first plate portion, a partition plate having first and second partition portions, and an upper circuit membrane having first and second upper circuit sheet portions respectively disposed on top of the first and second partition portions. The flexible circuit board includes a lower circuit membrane disposed between the second plate portion and the second partition portion, and a plurality of light-emitting elements disposed on the lower circuit membrane of the flexible circuit board.

A light emitting keyboard includes a frame having a translucent frame body, a plurality of key modules each having a keycap, and a backlight module including a light source circuit board, a first light guide plate disposed on top of the light source circuit board, a second light guide plate disposed under the light source circuit board, a plurality of first light-emitting members extending upwardly through the first light guide plate, a plurality of second light-emitting members extending downwardly through the second light guide plate, and a reflector plate disposed under the second light guide plate. Light emitted from the first light-emitting members is transmitted in the first light guide plate and projects upwardly onto the keycaps. Light emitted from the second light-emitting members is transmitted in the second light guide plate is reflected by the reflector plate, and projects onto the frame body.

An illuminated keyboard includes a supporting plate, a bottom circuit membrane disposed on the support plate, an intermediate partition plate disposed above the bottom circuit membrane, and a top circuit membrane disposed above said intermediate partition plate. A light emitter unit is disposed on the bottom circuit membrane. A light diffusion layer is disposed above the top circuit membrane and has a light transmission region for transmitting light rays generated from the light emitter unit. An elastic member is made of an elastic material and disposed on and above the diffusion layer. A bridging unit is disposed above the diffusion layer and aligned with the elastic member. A keycap is disposed above and connected to the bridging unit. The elastic member elastically abuts against the keycap. The keycap is light permeable.

A keyboard key device includes a keycap and a substrate unit. The substrate unit includes a light-emitting component, a light guide plate, and a light transmission plate. The light guide plate has first and second end surfaces, and at least one light-condensing hole. The first end surface is formed with an uneven microstructure for diffuse reflection of light rays. The light transmission plate has first and second side surfaces, and an outer reflective layer coated on the second side surface. A portion of light rays emitted from the light-emitting component and into the light transmission plate pass through the outer reflective layer, and the remainder of the light rays are reflected by the outer reflective layer.

A keyboard key device includes a keycap and a substrate unit. The substrate unit includes a light-emitting component, a light guide plate, and a light transmission plate. The light guide plate has first and second end surfaces, and at least one light-condensing hole. The first end surface is formed with an uneven microstructure for diffuse reflection of light rays. The light transmission plate has first and second side surfaces, and an outer reflective layer coated on the second side surface. A portion of light rays emitted from the light-emitting component and into the light transmission plate pass through the outer reflective layer, and the remainder of the light rays are reflected by the outer reflective layer.

A backlight module adapted for use in an input device includes a circuit board, a light guide plate, a plurality of light-emitting elements, and a reflective structure. The light guide plate disposed on the circuit board is formed with a microstructure. The reflective structure includes a reflective plate disposed on the light guide plate opposite to the circuit board, and a first reflective layer disposed on the reflective plate opposite to the light guide plate. The first reflective layer is configured to allow a portion of a light emitted from the light-emitting elements to pass therethrough, and to allow a portion of the light to be reflected back to the light guide plate and then be diffuse reflected by the microstructure formed on the light guide plate.