Backlight Module and Related Manufacturing Method and Operation Interface

A method of manufacturing a backlight module comprising:

• forming a light guide film;
• forming at least one hole at a position corresponding to at least one keypad of an operation interface in the light guide film;
• filling the at least one hole with a phosphor material;
• forming a backlight board at a bottom of the light guide film;
• and
• forming a light emitting unit on a side of the light guide film.

An operation interface for a portable electronic device comprising:

• at least one keypad;
• a backlight module comprising:
• a light guide film, comprising at least one hole corresponding to the at least one keypad, and filled with a phosphor material;
• a backlight board, installed at a bottom of the light guide film, for reflecting light;
• and
• a light emitting unit, installed on a side of the light guide film, for generating a light source to an inside of the light guide film;
• a power supply device, for providing a power source to the light emitting unit;
• and
• a control circuit, for controlling the power supply device according to a pressing condition of the at least one keypad.