Keyboard backlight module and manufacturing method thereof

A keyboard backlight module manufacturing method, comprising:

• sequentially stacking and attaching a reflective sheet, a light-guiding sheet and a circuit board, wherein the circuit board is attached to the first surface of the light-guiding sheet, a light-emitting element is disposed on the circuit board, and the light-emitting element is located between the circuit board and the light-guiding sheet;
• forming a glue layer on a first surface of a release film;
• and
• attaching the first surface of the release film to a first surface of the light-guiding sheet by using the glue layer, wherein after the attaching step, the glue layer is directly located on the first surface of the light-guiding sheet, and the circuit board is located between and the release film, and wherein when the release film is removed from the glue layer, the glue layer is fully transferred from the release film to the light-guiding sheet.

A keyboard backlight module, comprising:

• a light-guiding sheet, comprising a plurality of illuminated areas;
• a circuit board, located on a part of a first surface of the light-guiding sheet;
• a light-emitting element, located between the circuit board and the light-guiding sheet, disposed on the circuit board, and configured to emit light into the light-guiding sheet;
• a reflective sheet, located on another surface of the light-guiding sheet opposite to the circuit board;
• and
• a glue layer, located directly on another part of the first surface of the light-guiding sheet, wherein the glue layer is disposed along an edge of at least one of the plurality of illuminated areas.