Patent ID: 7118264
Filing Date: 2006-10-10
Classification: G02B,G02F

Abstract:
1. A backlight module having two lighting sides installed inside a casing: two sides of the casing being installed with a main display screen and a sub-display screen, respectively; the backlight module comprising: at least one light source; a light guide plate for guiding light from the light source to the main display screen and the sub-display screen; a lower diffusion sheet and a first light enhancing sheet being installed between the main display screen and the light guide plate; a reflective sheet and a second light enhancing sheet being sequentially installed between the sub-display screen and the light guide plate; wherein part of light from the sub-display screen is reflected to the main display screen; wherein a first upper diffusion sheet is installed between the main display screen and the light enhancing sheet for adjusting the uniformity and illumination of light; wherein a second upper diffusion sheet is installed between the sub-display screen and the light enhancing sheet for adjusting the uniformity and illumination of light; and wherein the main display screen, the first upper diffusion sheet, the first light enhancing sheet, the lower diffusion sheet, the light guide plate, the reflective sheet, the second light enhancing sheet, the second upper diffusion sheet and the sub-display screen are sequentially arranged one by one, no other plate is installed between any two of the above mentioned sheets.