DISPLAY MODULE AND METHOD FOR FIXING

• US 20110255036A1
• Filed: 02/10/2006
• Published: 10/20/2011
• Est. Priority Date: 02/10/2006
• Status: Active Grant

• Current Assignee: Nokia Technologies Oy (Nokia Corporation)
• Original Assignee: Nokia Corporation
• Inventors: Aaltonen, Antero
• Granted Patent: US 8,189,133 B2
• Time in Patent Office: Days
• US Class Current: 349/96
• 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 2202/28 Adhesive materials or arrangements
• CPC Class Codes: G06F 1/1607 Arrangements to support accessories mechanically attached to the display housing G06F1/1603, G06F1/1605 take precedence
• CPC Class Codes: G06F 1/1609 to support filters or lenses
• CPC Class Codes: H04M 1/0266 for a display module assembly

Abstract

A display module (12) adapted to be received in a module frame (27,34), the display module (12) comprising front and rear substrates (13,14). The rear substrate (14) of the display module (12) is extended in its principal plane to provide a ledge (26), which exposes the inner face (17) of the rear substrate (14) such that the display module (12) may be secured in the module frame (27,34) by a fixing between the inner face (17) of the rear substrate (14) and a face of the module frame (27,34).

Claims

1. A display module (12) adapted to be received in a module frame (27,34), the display module (12) comprising a front substrate (13) and a rear substrate (14), wherein the rear substrate (14) of the display module (12) extends along its principal plane beyond the perimeter of the front substrate (14) to provide a ledge (26).

2. A display module (12) according to claim 1 wherein the rear substrate (14) has an inner face (17) and the display module (12) further includes a mounting point (30) on the inner face (17) of the ledge (26) and a fixing, the fixing being made between the mounting point (30) and a face of the module frame (27,34).

3. A display module (12) according to claim 1 wherein the rear substrate (14) has an end face (29) and the display module (12) further includes a mounting point (31) on the end face (29) of the ledge (26) and a fixing, the fixing being made between the mounting point (31) and a face of the module frame (27,34).

4. A display module (12) according to claim 1 wherein the rear substrate (14) has an outer face (20) and the display module (12) further includes a mounting point (32) on the outer face (20) of the ledge (26) and a fixing, the fixing being made between the mounting point (32) and a face of the module frame (27,34).

5. A display module (12) according to claim 1 wherein the front substrate (13) has an outer face (19) and the display module (12) is received in a carrier product (28) having an external surface, wherein the outer face (19) of the front substrate (13) lies flush with the external surface of the carrier product (28).

6. A display module (12) according to claim 1 wherein the front substrate (13) has an inner face (16), the rear substrate (14) has an inner face (17) and the display module (12) further includes electrically conductive material, the conductive material being applied to the inner face (16,17) of each substrate (13,14) to provide a series of parallel, conductive ridges on the inner face (16,17) of each substrate (13,14).

7. A display module (12) according to claim 6 wherein the substrates (13,14) are aligned such that the direction of the conductive ridges on the inner face (16) of the front substrate (13) is perpendicular to the direction of the conductive ridges on the inner face of the rear substrate (14).

8. A display module (12) according to claim 6 further including a plurality of integrated circuits and a Printed Circuit Board (PCB) (23), wherein the integrated circuits are adapted to control a flow of charge through the conductive material and the integrated circuits are connected to the PCB (25).

9. A display module (12) according to claim 6 wherein the display module (12) comprises a Liquid Crystal Display (LCD) module further including polarizing filters (21,22,35) and liquid crystal material (15), the liquid crystal material being held in a sealed cavity between the substrates (13,14).

10. An LCD module (12) according to claim 9 wherein the composition of the polarizing layers (21,22,35) includes Polymethylmethacrylate (PMMA).

11. An LCD module (12) according to claim 9 including a lightguide (18), wherein the module (12) is illuminated from the rear by light scattered from the lightguide (18).

12. An LCD module (12) according to claim 9 wherein the rear substrate (14) has an outer face (20), the front substrate (13) has an outer face (19) and the polarizing filters (21,22,35) are applied to the outer faces (19,20) of the front and rear substrates (13,14) to filter incident electromagnetic radiation.

13. An LCD module (12) according to claim 12 wherein the polarizing layer (21,35) on the outer face (19) of the front substrate (13) has an outer face (23) and the LCD module (12) is received in a carrier product (28) having an external surface, the outer face (23) of the polarizing layer (21,35) lying flush with the external surface of the carrier product (28).

14. An LCD module (12) according to claim 12 wherein the polarizing layer (35) on the outer face (19) of the front substrate (13) extends along its principal plane to cover a surface of the module frame (27,34).

15. An LCD module (12) according to claim 12 wherein the substrates (13,14) are aligned such that the polarizing plane of the polarizing filter (21,35) applied to the face (19) of the front substrate (13) is perpendicular to the polarizing plane of the polarizing filter (22) applied to the face (20) of the rear substrate (14).

16. An LCD module (12) according to claim 9 wherein a polarization filter (21,22,35) is applied to the outer face (19,20) of each substrate (13,14) such that the polarization plane of the polarization filter (21,22,35) corresponds with the direction of the conductive ridges on the inner face (16,17) of the substrate (13,14).

17. An LCD module (12) according to claim 9 wherein the liquid crystal material (15) includes nematic liquid crystals.

18. An LCD module (12) according to claim 9 further including an array of Thin Film Transistors (TFTs), wherein the LCD is an active matrix LCD.

19. An LCD module (12) according to claim 9 wherein the LCD is a passive matrix LCD.

20. A display module (12) according to claim 1 wherein the substrates (13,14) comprise panels of plastics material.

21. A carrier product (28) including a display module (12) according to claim 1.

22. A mobile telephone (28) including a display module (12) according to claim 1.

30. A method according to claim 23 wherein the display module (12) comprises an LCD module according to claim 1.

23. A method of fixing a display module (12) to a module frame (27,34), the display module (12) comprising a front substrate (13) and a rear substrate (14), wherein the rear substrate (14) extends along its principal plane to provide a ledge (26) and the ledge provides mounting points (30-32), the method comprising:

fixing an inner face (17) of the ledge (26) to a face of the module frame (27,34) from a mounting point (30).

24. A method according to claim 23 including fixing an end face (29) of the ledge (26) to a face of the module frame (27,34) from a mounting point (31).

25. A method according to claim 23 including fixing an outer face (20) of the ledge (26) to a face of the module frame (27,34) from a mounting point (32).

26. A method according to claim 23 including fixing the module frame (27,34) to a carrier product (28).

27. A method according to claim 23 including fixing the ledge (26) to the module frame (27,34) with a layer of adhesive.

28. A method according to claim 23 including fixing the ledge (26) to the module frame (27,34) with a layer of double-sided tape.

29. A method according to claim 23 including fixing the ledge (26) to the module frame (27,34) using a gasket.