Backlight module

Abstract

A backlight module comprises a light guide plate, a light source disposed on one lateral side of the light guide plate, a reflector disposed under the light guide plate, and a color layer of a predetermined color disposed under the reflector. Light from the light source is guided by the light guide plate. A part of the light penetrates the reflector and is reflected by the color layer to generate colored light which is mixed to the light from the light source to create light of desired color.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

The invention can be more fully understood by reading the subsequent detailed description and examples with references made to the accompanying drawings, wherein:

FIG. 1 is a schematic view of a conventional backlight module;

FIG. 2 is a schematic view of an embodiment of a backlight module of the invention;

FIG. 3 is an enlarged view of region A of FIG. 2;

FIG. 4 is a schematic view of another embodiment of a backlight module of the invention;

FIG. 5 is a schematic view of another embodiment of a backlight module of the invention;

FIG. 6 is a schematic view of a display module wherein a backlight module of the invention is applied; and

FIG. 7 is a schematic view of an electronic device wherein the display module of FIG. 6 is applied.

Claims

1. A backlight module, comprising: a light guide plate;a light source disposed on one lateral side of the light guide plate;a reflector disposed under the light guide plate; anda color layer of a predetermined color disposed under the reflector, whereby the reflector is between the light guide plate and the color layer, light from the light source is guided by the light guide plate, and a part of the light penetrates the reflector and is reflected by the color layer to generate colored light which is mixed with the light from the light source to create light of desired color.

2. The backlight module as claimed in claim 1, wherein the color layer is opaque.

3. The backlight module as claimed in claim 2, wherein the color layer comprises paper.

4. The backlight module as claimed in claim 2, wherein the color comprises PET.

5. The backlight module as claimed in claim 1, wherein the color layer is formed on the back of the reflector.

6. The backlight module as claimed in claim 5, wherein the color layer is formed on the reflector by printing method.

7. The backlight module as claimed in claim 5, wherein the color layer is formed on the reflector by spraying method.

8. The backlight module as claimed in claim 1 further comprising a housing disposed under the reflector, wherein the color layer is formed on one side of the housing facing the reflector.

9. The backlight module as claimed in claim 8, wherein the color layer is formed on the housing by printing method.

10. The backlight module as claimed in claim 8, wherein the color layer is formed on the housing by spraying method.

11. The backlight module as claimed in claim 1, wherein the reflector comprises white PET.

12. A display module comprising: a panel; anda backlight module claimed as claim 1, wherein the backlight module is joined to the panel.

13. An electronic device comprising: a display module claimed as claim 12; andan input unit coupled and inputting signals to the display module.

14. The electronic device as claimed in claim 13, wherein the electronic device is a mobile phone, a digital camera, a personal digital assistant, a laptop, a desktop, a TV, a mobile display, or a portable DVD.