Backlight structure and display module using the same

• US 9,074,740 B2
• Filed: 07/01/2011
• Issued: 07/07/2015
• Est. Priority Date: 07/01/2011
• Status: Active Grant

• Current Assignee: InnoLux Corporation
• Original Assignee: InnoLux Corporation
• Inventors: Notermans, Jef
• Primary Examiner(s): Wong, Tina
• Application Number:
  US13/175,374
• Publication Number:
  US 20130002976A1
• Time in Patent Office: 1,467 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: F21S 8/00 Lighting devices intended for fixed installation F21S9/00, F21S10/00 take precedence; using a string or strip of light sources F21S4/00
• CPC Class Codes: F21V 21/00 Supporting, suspending, or attaching arrangements for lighting devices F21V17/00, F21V19/00 take precedence; arrangement of signalling or lighting devices, the mounting or supporting thereof or circuits therefor, for vehicles in general B60Q, stands for supporting apparatus or articles in general F16M11/00; Hand grips
• CPC Class Codes: G02B 6/0031 Reflecting element, sheet or layer
• CPC Class Codes: G02B 6/005 provided by one optical element, or plurality thereof, placed on the light output side of the light guide
• CPC Class Codes: G02B 6/0088 of the light guide or other optical sheets in the package
• CPC Class Codes: G02F 1/133308 Support structures for LCD panels, e.g. frames or bezels
• CPC Class Codes: G02F 1/133317 Intermediate frames, e.g. between backlight housing and front frame
• CPC Class Codes: G02F 1/133322 Mechanical guidance or alignment of LCD panel support components
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G02F 1/1336 Illuminating devices
• CPC Class Codes: G02F 2202/28 Adhesive materials or arrangements

Abstract

A backlight structure is provided. The backlight structure includes a backlight unit and a casing. The backlight unit configured to provide light to a display panel. The casing has a base portion and a support portion. The base portion surrounds the backlight unit. The support portion is connected to the base portion, and overlaps with part of the backlight unit. The support portion is for supporting the display panel thereon.

Claims

1. A backlight structure comprising:

a backlight unit for providing light to a display panel, the backlight unit comprising an optical film; and

a casing having a base portion and a support portion, the base portion surrounding the backlight unit, the support portion being connected with the base portion and overlapping part of the backlight unit, the support portion being adapted for supporting the display panel thereon;

wherein the display panel is disposed above the support portion, and the optical film is disposed below the support portion,

wherein the support portion is disposed at an outside of the base portion, an edge of the display panel is between an edge of the backlight unit and the support portion, and a first gap between an edge of an active area of the display panel and an inner edge of the casing is smaller than a second gap between an edge of the optical film and the inner edge of the casing,

wherein an upper side of the base portion and that of the support portion are below the display panel.

2. The backlight structure according to claim 1, wherein the upper surface of the support portion is of a rectangular ring shape and the support portion covers the edges of the backlight unit.

3. The backlight structure according to claim 1, wherein the light of the backlight unit is emitted from the optical film, the optical film has a plurality of edges, and the edges of the optical film are covered by the support portion.

4. The backlight structure according to claim 3, wherein the backlight unit further comprises a light guide and a reflector film, and the light guide is disposed between the optical film and the reflector film.

5. The backlight structure according to claim 1, wherein the support portion is of metal.

6. The backlight structure according to claim 1, wherein the support portion is a metal frame made by insert molding.

7. The backlight structure according to claim 1, wherein the support portion is extended from a lateral side of the base portion.

8. The backlight structure according to claim 1, wherein the support portion is extended from the upper side of the base portion.

9. The backlight structure according to claim 1, wherein the display panel is bonded to the casing through a double-side adhesive layer, and an outer edge of the double-side adhesive layer is between the edge of the display panel and an outer edge of the casing.

10. A display module comprising:

a display panel;

a backlight unit for providing light to the display panel, the backlight unit comprising an optical film; and

a casing having a base portion and a support portion, the base portion surrounding the backlight unit, the support portion being connected with the base portion and overlapping part of the backlight unit, the support portion being adapted for supporting the display panel thereon;

wherein the display panel is disposed above the support portion, and the optical film is disposed below the support portion,

wherein the support portion is disposed at an outside of the base portion, an edge of the display panel is between an edge of the backlight unit and the support portion, and a first gap between an edge of an active area of the display panel and an inner edge of the casing is smaller than a second gap between an edge of the optical film and the inner edge of the casing,

wherein an upper side of the base portion and that of the support portion are below the display panel.

11. The display module according to claim 10, wherein the upper surface of the support portion is of a rectangular ring shape and the support portion covers the edges of the backlight unit.

12. The display module according to claim 10, wherein the light of the backlight unit is emitted from the optical film, the optical film has a plurality of edges, and the edges of the optical film are covered by the support portion.

13. The display module according to claim 12, wherein the backlight unit further comprises a light guide and a reflector film, and the light guide is disposed between the optical film and the reflector film.

14. The display module according to claim 10, wherein the support portion is of metal.

15. The display module according to claim 10, wherein the support portion is a metal frame made by insert molding.

16. The display module according to claim 10, wherein the support portion is extended from a lateral side of the base portion.

17. The display module according to claim 10, wherein the support portion is extended from the upper side of the base portion.

18. The display module according to claim 10, wherein the display panel is a liquid crystal display panel.

19. The display module according to claim 10, wherein the display panel is a touch panel.

20. The display module according to claim 10, wherein the display panel is bonded to the casing through a double-side adhesive layer, and an outer edge of the double-side adhesive layer is between the edge of the display panel and an outer edge of the casing.