Backlight module locating device and method thereof

• US 20080007959A1
• Filed: 02/15/2007
• Published: 01/10/2008
• Est. Priority Date: 06/30/2006
• Status: Abandoned Application

• Current Assignee: K. Eldridge Electronics Pty., Ltd.
• Original Assignee: K. Eldridge Electronics Pty., Ltd.
• Inventors: Chen, Chin-Hui, Cheng, Kuo
• Application Number:
  US11/706,416
• Publication Number:
  US 20080007959A1
• Time in Patent Office: Days
• US Class Current: 362/457
• CPC Class Codes: B29C 45/14336 Coating a portion of the article, e.g. the edge of the article B29C45/14573 and B29C45/14598 take precedence
• CPC Class Codes: B29C 45/16 Making multilayered or multicoloured articles B29C45/0062 takes precedence; feeding colouring materials into the injection unit B29C45/1816
• CPC Class Codes: G02F 1/1336 Illuminating devices
• CPC Class Codes: G02F 1/133608 including particular frames or supporting means

Abstract

A locating device and method therefore for a first and a second parts of a backlight module by having, for example, a metal back plate or a metal reflection layer and a plastic frame secured to each other and made an integrated party without relying upon any other assembly part, e.g., a screw, or an assembly structure, e.g., an opening and a locking hook, thus to shorten assembly process and to improve assembly strength between the metal back plate or the metal reflection layer and the plastic frame.

Claims

1. A backlight module locating device includes a first part and a second part;

the first part containing a locating portion; and

the locating portion extending into the second part when the second part is molded in shape.

2. The backlight module locating device as claimed in claim 1, wherein the first part relates to a metal back plate, a grounding member, a metal reflection layer or a solid substance.

3. The backlight module locating device as claimed in claim 1, wherein the second part relates to a plastic frame, and a light guide plate or a diffuser is mounted on the plastic frame.

4. The backlight module locating device as claimed in claim 1, wherein the second part relates to a lamp fixation holder made in an annular shape to receive insertion of a lamp, and a diffuser is mounted on the lamp fixation holder.

5. A backlight module locating device includes a first part and a second part;

the first part contacting a molding material of the second part before the molding material is cured; and

both of the first and second parts are secured to each other and made in an integrated part when the molding material is solidified.

6. The backlight module locating device as claimed in claim 5, wherein the first part relates to a metal back plate, a grounding member, a metal reflection layer or a solid substance.

7. The backlight module locating device as claimed in claim 5, wherein the second part relates to a plastic frame, and a light guide plate or a diffuser is mounted on the plastic frame.

8. The backlight module locating device as claimed in claim 5, wherein the second part relates to a lamp fixation holder made in an annular shape to receive insertion of a lamp, and a diffuser is mounted on the lamp fixation holder.

9. A backlight module locating method includes the following steps:

providing a first part disposed with a locating portion;

providing a molding area for the second part, and the molding area being defined by an area formed upon both of a first and a second molds are closed up to each other;

placing the first part in the molding area through the locating portion;

injecting a molding material to cover up the locating portion; and

extending the locating portion into the second part upon the second part is molded in shape to make both of the first and the second parts to be secured to each other in position.

10. The backlight module locating method as claimed in claim 9, wherein the first part relates to a metal back plate, a grounding member, a metal reflection layer or a solid substance.

11. The backlight module locating method as claimed in claim 9, wherein the second part relates to a plastic frame, a light guide plate or a diffuser is mounted on the plastic frame;

or the second part relates to a lamp fixation holder made in an annular shape to receive insertion of a lamp, and a diffuser is mounted on the lamp fixation holder.

12. A backlight module locating method includes the following steps:

providing a first part;

providing a molding area for the second part, and the molding area being defined by an area formed upon both of a first and a second molds are closed up to each other;

injecting a molding material and having one side of the first part to contact the molding material before the molding material is cured; and

allowing the molding material to cool down and get solidified for both of the first and the second parts to be secured to each other in position and become an integrated part.

13. The backlight module locating method as claimed in claim 12, wherein the first part relates to a metal back plate, a grounding member, a metal reflection layer or a solid substance.

14. The backlight module locating method as claimed in claim 12, wherein the second part relates to a plastic frame, and a light guide plate or a diffuser is mounted on the plastic frame.

15. The backlight module locating method as claimed in claim 12, wherein the second part relates to a lamp fixation holder made in an annular shape to receive insertion of a lamp, and a diffuser is mounted on the lamp fixation holder.

16. A backlight module locating method for forming an integrated part construction for a first part and a second part using two different types of molding materials respectively injected in sequence into a molding area.

17. The backlight module locating method as claimed in claim 16, wherein the first part relates to a metal back plate, a grounding member, a metal reflection layer or a solid substance.

18. The backlight module locating method as claimed in claim 16, wherein the second part relates to a plastic frame, a light guide plate or a diffuser is mounted on the plastic frame;

or the second part relates to a lamp fixation holder made in an annular shape to receive insertion of a lamp, and a diffuser is mounted on the lamp fixation holder.

19. The backlight module locating method as claimed in claim 16, wherein two different types of molding materials are contained in their respective feeding cylinders to be injected through two nozzles into a molding area.

20. The backlight module locating method as claimed in claim 16, wherein the molding area contains a first pre-molding area and a second pre-molding area to respectively provide for two different types of molding materials to be respectively molded in shape.