Display module

• US 9,039,265 B2
• Filed: 02/28/2013
• Issued: 05/26/2015
• Est. Priority Date: 02/29/2012
• Status: Expired due to Fees

• Current Assignee: Young Lighting Technology Inc. (Coretronic Corporation)
• Original Assignee: Young Lighting Technology Inc. (Coretronic Corporation)
• Inventors: Yang, Wen-Pin, Chen, Chen-Lung
• Primary Examiner(s): Hanley, Britt D
• Application Number:
  US13/780,940
• Publication Number:
  US 20130223094A1
• Time in Patent Office: 817 Days
• Field of Search: None
• US Class Current: 362/606
• CPC Class Codes: G02B 6/0031 Reflecting element, sheet or layer
• CPC Class Codes: G02B 6/0085 Means for removing heat created by the light source from the package heat extraction or cooling elements for semiconductor light sources in general H01L33/64

Abstract

A display module has a display panel and a backlight module disposed on one side of the display panel. The backlight module includes a heat sink, a light bar, a light guide plate, a first reflective sheet, and a second reflective sheet. The light bar abuts against one side of the heat sink. The first reflective sheet is disposed adjacent to a bottom surface of the light guide plate, and the second reflective sheet is disposed adjacent to an edge of a light-emitting surface of the light guide plate. The second reflective sheet has a first part and a second part forming an included angle with the first part, the first part is attached to the heat sink or the light bar, and the second part overlaps a part of the light-emitting surface of the light guide plate.

Claims

1. A display module, comprising:

a display panel; and

a backlight module disposed on one side of the display panel and comprising;

a heat sink;

a light bar abutting against one side of the heat sink;

a light guide plate capable of guiding a light beam emitted from the light bar, the light guide plate having a light incident surface adjacent to the light bar, a light-emitting surface forming an included angle with the light incident surface, and a bottom surface opposite to the light-emitting surface;

a first reflective sheet disposed adjacent to the bottom surface of the light guide plate;

a second reflective sheet disposed adjacent to an edge of the light-emitting surface of the light guide plate, wherein the second reflective sheet has a first part and a second part forming an included angle with the first part;

a first spacer disposed between and abutting against the second part of the second reflective sheet and the display panel; and

a second spacer disposed on the light bar, wherein two ends of the second spacer respectively abut against the heat sink and the first part of the second reflective sheet, the first part of the second reflective sheet is attached to the second spacer, and the second part of the second reflective sheet overlaps a part of the light-emitting surface.

2. The display module as claimed in claim 1, wherein the first spacer comprises at least one of silica gel and foam.

3. The display module as claimed in claim 1, wherein the second spacer comprises silica gel, a metal strip or a plastic strip.

4. The display module as claimed in claim 1, further comprising:

an optical film set disposed between the light guide plate and the display panel and comprising at least a diffuser film and a brightness enhancement film stacked with each other.

5. The display module as claimed in claim 4, wherein the light bar comprises a substrate and at least one light-emitting diode disposed on the substrate, and the second part of the second reflective sheet is positioned between the substrate and the optical film set.

6. The display module as claimed in claim 4, wherein the sum of a thickness of the first spacer and a thickness of the second part of the second reflective sheet is substantially equal to a thickness of the optical film set.

7. The display module as claimed in claim 1, further comprising:

a front bezel used to confine the display panel and the backlight module on a back plate.

8. The display module as claimed in claim 1, wherein the first part of the second reflective sheet is fixed on the second spacer by an adhesive tape.

10. The display module as claimed in claim 1, wherein the first part of the second reflective sheet is fixed on the heat sink or the light bar by an adhesive tape.

11. The display module as claimed in claim 1, wherein the display panel is a liquid crystal display panel.

9. A display module, comprising:

a back plate;

a display panel disposed on the back plate; and

a backlight module disposed on one side of the display panel and confined on the back plate, the backlight module comprising;

a light bar abutting against one side of the back plate;

a light guide plate capable of guiding a light beam emitted from the light bar, the light guide plate having a light incident surface adjacent to the light bar, a light-emitting surface forming an included angle with the light incident surface, and a bottom surface opposite to the light-emitting surface;

a first reflective sheet disposed adjacent to the bottom surface of the light guide plate;

a second reflective sheet disposed adjacent to an edge of the light-emitting surface of the light guide plate, wherein the second reflective sheet has a first part and a second part forming an included angle with the first part;

a first spacer disposed between and abutting against the second part of the second reflective sheet and the display panel; and

a second spacer disposed on the light bar, wherein two ends of the second spacer respectively abut against the back plate and the first part of the second reflective sheet, the first part of the second reflective sheet is attached to the second spacer, and the second part of the second reflective sheet overlaps a part of the light-emitting surface.