Chicony Power Technology Co., Ltd.

Tsung-Hsun Chen

Hsuan-Wei Ho

Chen-Hao Chiu

Fang-Yi Lien

A light guide module includes a circuit board, a light emitting unit, a light guide plate, and a film. The light emitting unit includes a first light emitting unit and a second light emitting unit. The first light emitting unit and the second light emitting unit are arranged on the circuit board along a first axis. The light emitting unit has a second axis, and the second axis is substantially perpendicular to the first axis. The light guide plate has a through hole and a light conducting area. The through hole is surrounded by a hole wall. There is a first gap between the first light emitting unit and the adjacent hole wall along the first axis, and there is a second gap between the first light emitting unit and the adjacent hole wall along the second axis. The first gap is larger than the second gap.

Light guide module

A backlight module of an illuminated keyboard includes: a circuit board including a first circuit, a second circuit, a gathering portion and a conduction portion, and the first circuit having a first line section; a light guiding plate disposed on the circuit board, including a first light guiding region and a second light guiding region, and the first light guiding region disposed on the first line section; a plurality of light-emitting elements disposed in parallel on the first line section; and an resistor unit including a first resistor and a second resistor, the first resistor disposed on the first circuit, and the second resistor disposed on the second circuit. A sum of a line impedance of the first circuit and an impedance of the first resistor is substantially equal to a sum of a line impedance of the second circuit and an impedance of the second resistor.

Backlight module of illuminated keyboard

A backlight module includes a flexible circuit board and a light guide plate. A first light source assembly, a second light source assembly, and a positioning member are disposed on the flexible circuit board. The light guide plate is disposed over the flexible circuit board and includes a first single key light guide area, a second single key light guide area, and a connection area. The first single key light guide area has a first through hole accommodating the first light source assembly. The second single key light guide area has a second through hole accommodating the second light source assembly. The connection area is located between the first and second single key light guide areas and has an accommodating hole. The flexible circuit board is overlapped with the light guide plate with the positioning member being accommodated in the accommodating hole.

Backlight module

A backlight module includes a circuit board, a light-shielding plate, and a light guide plate. The circuit board is provided with first and second light-emitting units. The light-shielding plate is disposed above the circuit board. The light guide plate is disposed between the circuit board and the light-shielding plate and includes first and second single-key light guide areas. The first and second single-key light guide areas respectively have first and second through holes respectively accommodating the first and second light-emitting units. A distance between the geometric center of the first single-key light guide area and that of the light guide plate is greater than a distance between the geometric center of the second single-key light guide area and that of the light guide plate. A current flowing through the first light-emitting unit is greater than a current flowing through the second light-emitting unit.

A backlight module includes a cover plate, a light guide plate, a circuit board, a reflective layer, and a light source. The light guide plate is disposed under the cover plate and has a first hole corresponding to a light-shielding region of the cover plate. The circuit board is disposed under the light guide plate and includes a first substrate and a conductive layer having a through hole. The reflective layer is disposed between the light guide plate and the circuit board and has a second hole. The first substrate is in contact with the reflective layer. The conductive layer is disposed between the first substrate and the reflective layer having a recess recessed into the through hole. The light source is disposed on the circuit board, accommodated in the first hole and the second hole corresponding thereto, and in contact with the conductive layer.

Backlight module and method of manufacturing the same

An illuminated keyboard comprises a first keycap group, a second keycap group, and a backlight module. Each keycap group includes plural keycaps. The backlight module comprises a first light-emitting unit, a second light-emitting unit, a first resistor, a second resistor, a light guide plate, and a circuit board. The light-emitting elements in the first and second light-emitting units are electrically connected to each other in parallel. The first resistor is electrically connected to the first light-emitting unit in series, and the second resistor is electrically connected to the second light-emitting unit in series. The light guide plate is configured with plural through holes, and the circuit board is disposed under the light guide plate. A first total light-emitting area of the first keycap group is not equal to a second total light-emitting area of the second keycap group.

Illuminated keyboard and backlight module thereof

A touch module includes a circuit board, a light emitting element, a light guide plate, and a reflector plate. The light emitting element is electrically connected to the circuit board, and the light emitting element has an upper light emitting surface. The light guide plate is arranged above the circuit board. The reflector plate is arranged above the light guide plate. The reflector plate includes a first surface facing the light guide plate. The first surface is provided with a light-transmitting region, a light-shielding region, and a light-reflecting region. The light-reflecting region is arranged corresponding to the light emitting element. An area of the light-shielding region is greater than an area of the light-reflecting region. The area of the light-reflecting region is greater than an area of the upper light emitting surface of the light emitting element.

Growing community of inventors

Taipei, Taiwan

Tsung-Hsun Chen