Display module and method for fixing

• US 8,189,133 B2
• Filed: 02/10/2006
• Issued: 05/29/2012
• Est. Priority Date: 02/10/2006
• Status: Active Grant

• Current Assignee: Nokia Technologies Oy (Nokia Corporation)
• Original Assignee: Nokia Corporation
• Inventors: Aaltonen, Antero
• Primary Examiner(s): DUONG, THOI V
• Application Number:
  US12/278,425
• Publication Number:
  US 20110255036A1
• Time in Patent Office: 2,300 Days
• Field of Search: 349/58, 349/65, 349/96, 349/150, 349/158, 349/139, 349/187, 362/631, 362/97.1, 362/97.2, 362632-634, 445/24, 445/25
• US Class Current: 349/58
• 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. An apparatus comprising:

a display module comprising a front substrate and a rear substrate, the front substrate comprising an outer face, wherein the rear substrate of the display module extends along its principal plane beyond the perimeter of the front substrate to provide a ledge comprising an inner face; and

a module frame configured to receive the display module and hold the display module in place at least partially via at least one fixing between the module frame and the inner face of the ledge, wherein

the apparatus is configured to be held in a carrier product, comprising an external surface, and wherein when the apparatus is held in the carrier product the external surface of the carrier product is substantially flush with the outer face of the front substrate.

2. An apparatus according to claim 1 wherein the display module further includes a mounting point on the inner face of the ledge and a fixing between that mounting point and a face of the module frame.

3. An apparatus according to claim 1 wherein the rear substrate has an end face and the display module further includes a mounting point on the end face of the ledge and a fixing between that mounting point and a face of the module frame.

4. An apparatus according to claim 1 wherein the rear substrate has an outer face and the display module further includes a mounting point on the outer face of the ledge and a fixing between that mounting point and a face of the module frame.

5. An apparatus according to claim 1 wherein the front substrate has an inner face, the rear substrate has an inner face and the display module further includes electrically conductive material, the conductive material being applied to the inner face of each substrate to provide a series of parallel, conductive ridges on the inner face of each substrate.

6. An apparatus according to claim 5 wherein the substrates are aligned such that the direction of the conductive ridges on the inner face of the front substrate is perpendicular to the direction of the conductive ridges on the inner face of the rear substrate.

7. An apparatus according to claim 5 further including a plurality of integrated circuits and a printed circuit board, wherein the integrated circuits are adapted to control a flow of charge through the conductive material and the integrated circuits are connected to the printed circuit board.

8. An apparatus according to claim 5 wherein the display module comprises a liquid crystal display module further including polarizing filters and liquid crystal material, the liquid crystal material being held in a sealed cavity between the substrates.

9. An apparatus according to claim 8 wherein the composition of the polarizing layers includes Polymethylmethacrylate.

10. An apparatus according to claim 8 including a lightguide, wherein the liquid crystal display module is configured to be illuminated from the rear by light scattered from the lightguide (18).

11. An apparatus according to claim 8 wherein the rear substrate has an outer face and the polarizing filters are applied to the outer faces of the front and rear substrates to filter incident electromagnetic radiation.

12. An apparatus according to claim 11 wherein the polarizing layer on the outer face of the front substrate extends along its principal plane to cover a surface of the module frame.

13. An apparatus according to claim 11 wherein the substrates are aligned such that the polarizing plane of the polarizing filter applied to the face of the front substrate is perpendicular to the polarizing plane of the polarizing filter applied to the face of the rear substrate.

14. An apparatus according to claim 8 wherein a polarization filter is applied to the outer face of each substrate such that the polarization plane of the polarization filter corresponds with the direction of the conductive ridges on the inner face of the substrate.

15. An apparatus according to claim 8 wherein the liquid crystal material includes nematic liquid crystals.

16. An apparatus according to claim 8 further including an array of thin film transistors, wherein the liquid crystal display module is an active matrix liquid crystal display module.

17. An apparatus according to claim 8 wherein the liquid crystal display module is a passive matrix liquid crystal display module.

18. An apparatus according to claim 1 wherein the substrates comprise panels of plastics material.

19. A carrier product including an apparatus according to claim 1.

20. A mobile telephone including an apparatus according to claim 1.

21. An apparatus according to claim 1, wherein the fixing is made directly between the module frame and the inner face of the ledge.

22. An apparatus according to claim 1, wherein when the apparatus is held in the carrier product the external surface of the carrier product is substantially flush with the outer face of the front substrate at a point of the external surface of the carrier product closest to the outer face of the front substrate.

23. A method comprisinqe:

fixing a display module to a module frame the display module comprising a front substrate and a rear substrate, the front substrate comprising an outer face, wherein the rear substrate extends along its principal plane to provide a ledge, the method further comprising;

fixing an inner face of the ledge to a face of the module frame, wherein the apparatus is configured to be held in a carrier product, comprising an external surface, and wherein when the apparatus is held in the carrier product the external surface of the carrier product is substantially flush with the outer face of the front substrate.

24. A method according to claim 23 further comprising:

fixing an end face of the ledge to a face of the module frame.

25. A method according to claim 23 further comprising:

fixing an outer face of the ledge to a face of the module frame.

26. A method according to claim 23 further comprising:

fixing the module frame to a the carrier product.

27. A method according to claim 23 wherein the inner face of the ledge is fixed to the module frame with a layer of adhesive.

28. A method according to claim 23 wherein the inner face of the ledge is fixed to the module frame with a layer of double-sided tape.

29. A method according to claim 23 wherein the inner face of the ledge is fixed to the module frame using a gasket.

30. A method according to claim 23 wherein the display module is a liquid crystal display module.