BACKLIGHT MODULE AND LIQUID CRYSTAL DISPLAY
First Claim
Patent Images
1. A backlight module, comprising:
- a light guide plate;
a substrate, disposed at the bottom of a light incident side of said light guide plate;
a light source, disposed on said substrate;
Tangenta reflective element, used to reflect the light beam emitted from said light source to a light incident plane of said light guide plate; and
a reflective sheet, disposed at the bottom of said light guide plate, used to reflect the light beam onto a lower surface of said light guide plate;
said light guide plate and said reflective sheet being joined by a double coated film that is set up along the edge of the lower surface of said light guide plate where a light exit plane of said light source, the lower surface of said light guide plate and a light exit plane of said light guide plate are parallel to one another and the light exit plane of said light source is placed in between the lower surface of said light guide plate and the light exit plane of said light guide plate;
the width of the double coated film being D, the distance between the lower surface of said light guide plate and the light exit plane of said light source being H, and the refraction index of said light guide plate being n where the ratio of H to D is greater than 0.8*tan[arc sin(1/n)];
the double coated film being set up along the edge of the incident side of the bottom.
1 Assignment
0 Petitions
Accused Products
Abstract
This invention relates to a backlight module and a liquid crystal display where the backlight module comprises a light guide plate, a substrate, a light source, a reflective element and a reflective sheet. The light guide plate and the reflective sheet are joined by a double coated film that is set up along the edge of a lower surface of the light guide plate. A light exit plane of the light source is placed in between the lower surface of the light guide plate and a light exit plane of the light guide plate. By means of altering the setup of the light guide plate and the reflective sheet, this invention settles the technical issue of mura appeared at the corresponding display panel.
-
Citations
17 Claims
-
1. A backlight module, comprising:
-
a light guide plate; a substrate, disposed at the bottom of a light incident side of said light guide plate; a light source, disposed on said substrate;
Tangenta reflective element, used to reflect the light beam emitted from said light source to a light incident plane of said light guide plate; and a reflective sheet, disposed at the bottom of said light guide plate, used to reflect the light beam onto a lower surface of said light guide plate; said light guide plate and said reflective sheet being joined by a double coated film that is set up along the edge of the lower surface of said light guide plate where a light exit plane of said light source, the lower surface of said light guide plate and a light exit plane of said light guide plate are parallel to one another and the light exit plane of said light source is placed in between the lower surface of said light guide plate and the light exit plane of said light guide plate; the width of the double coated film being D, the distance between the lower surface of said light guide plate and the light exit plane of said light source being H, and the refraction index of said light guide plate being n where the ratio of H to D is greater than 0.8*tan[arc sin(1/n)]; the double coated film being set up along the edge of the incident side of the bottom.
-
-
2. A backlight module, comprising:
-
a light guide plate; a substrate, disposed at the bottom of a light incident side of said light guide plate; a light source, disposed on said substrate; a reflective element, used to reflect the light beam emitted from said light source to a light incident plane of said light guide plate; and a reflective sheet, disposed at the bottom of said light guide plate, used to reflect the light beam onto a lower surface of said light guide plate; said light guide plate and said reflective sheet being joined by a double coated film, which is set up along the edge of the lower surface of said light guide plate where a light exit plane of said light source, the lower surface of said light guide plate and a light exit plane of said light guide plate are parallel to one another and the light exit plane of said light source is placed in between the lower surface of said light guide plate and the light exit plane of said light guide plate. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9)
-
-
10. A liquid crystal display, comprising:
- a display panel and a backlight module, wherein the backlight module comprises;
a light guide plate; a substrate, disposed at the bottom of a light incident side of said light guide plate; a light source, disposed on said substrate; a reflective element, used to reflect the light beam emitted from said light source to a light incident plane of said light guide plate; and a reflective sheet, disposed at the bottom of said light guide plate, used to reflect the light beam onto a lower surface of said light guide plate; said light guide plate and said reflective sheet being joined by a double coated film, which is set up along the edge of the lower surface of said light guide plate where a light exit plane of said light source, the lower surface of said light guide plate and a light exit plane of said light guide plate are parallel to one another and the light exit plane of said light source is placed in between the lower surface of said light guide plate and the light exit plane of said light guide plate. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
- a display panel and a backlight module, wherein the backlight module comprises;
Specification