Patent ID: 9720161
Date: 2017-08-01
CPC Classifications: G02B

Claim:
1. A backlight module device for illuminating a liquid crystal display (LCD), the device comprising: a housing comprising a first reflective coating located on an inner surface of the housing; a light guide plate within the housing and for converting light beams into a corresponding surface light source emitted from an upper surface of the light guide plate comprising a lower surface which is formed with a plurality of optical scattering dots, which scatter and reflect the light beams to convert the light beams into a uniform said surface light source; an illumination source comprising a plurality of LED lights located on three edges of the light guide plate and for providing the light beams; a diffuser film within the housing and mounted on the upper surface of the light guide plate, the diffuser film for unifying the light beams from the light guide plate; and two orthogonally co-located brightness enhance films within the housing and mounted on the diffuser film, wherein there is a function of distance from at least one of the three edges comprising the LED lights such that for any two adjacent said optical scattering dots, the nearer of the two adjacent optical scattering dots from the at least one of the three edges has a larger surface area than the farther of the two adjacent optical scattering dots.