Portable Device and Method of Manufacturing A Display Device

• US 20120327007A1
• Filed: 09/05/2012
• Published: 12/27/2012
• Est. Priority Date: 07/31/2008
• Status: Active Grant

• Current Assignee: Panasonic Intellectual Property Corporation of America (Panasonic Holdings Corporation)
• Original Assignee: Japan Display Incorporated
• Inventors: OOHIRA, Eiji
• Granted Patent: US 9,035,893 B2
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G02F 1/13332 Front frames
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G02F 1/133528 Polarisers
• CPC Class Codes: G02F 1/133531 characterised by the arrangement of polariser or analyser axes
• CPC Class Codes: G02F 1/1339 Gaskets; Spacers; Sealing of cells
• CPC Class Codes: G02F 1/134363 for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS]
• CPC Class Codes: G02F 1/13439 characterised by their electrical, optical, physical properties; materials therefor; method of making
• CPC Class Codes: G02F 1/1345 Conductors connecting electrodes to cell terminals
• CPC Class Codes: G02F 1/13452 Conductors connecting driver circuitry and terminals of panels
• CPC Class Codes: G02F 2202/28 Adhesive materials or arrangements
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/044 by capacitive means
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes
• CPC Class Codes: Y10T 156/10 Methods of surface bonding and/or assembly therefor

Abstract

A portable device and method of manufacturing a display device includes a display panel having a glass substrate and a polarizer adhered to the glass substrate, a touch panel which is made of resin material and adhered to the polarizer of the display panel by a first adhesive material, and a front window which is made of glass and adhered to the touch panel by a second adhesive material. One of the first adhesive material and the second adhesive material is an adhesive sheet, and an other of the first adhesive material and the second adhesive material is an ultraviolet-curing adhesive material.

Claims

1. A portable device comprising:

a display panel having a glass substrate and a polarizer adhered to the glass substrate;

a touch panel which is made of a resin material and adhered to the polarizer of the display panel by a first adhesive material; and

a front window which is made of glass and adhered to the touch panel by a second adhesive material,

wherein one of the first adhesive material and the second is an adhesive material sheet, and an other of the first adhesive material and the second adhesive material is an ultraviolet-curing adhesive material.

2. A portable device according to claim 1, wherein the first adhesive material has an adhesive strength different from an adhesive strength of the second adhesive material.

3. A portable device according to claim 2, wherein the adhesive strength of the second adhesive material is greater than the adhesive strength of the first adhesive material.

4. A portable device according to claim 1, wherein the first adhesive material is the ultraviolet-curing adhesive material and the second adhesive material is the adhesive sheet.

5. A portable device according to claim 4, wherein an adhesive strength of the adhesive sheet of the second adhesive material is sufficient to adhere an elastic layer to a rigid layer while straightening the elastic layer having a warp.

6. A portable device according to claim 5, wherein the front window is at least part of the rigid layer and the touch panel is at least part of the elastic layer.

7. A portable device comprising:

a display panel having a glass substrate and a polarizer adhered to the glass substrate;

a touch panel which is made of a resin material and adhered to the polarizer of the display panel by a first adhesive material; and

a front window which is made of glass and adhered to the touch panel by a second adhesive material,

wherein the first adhesive material is an ultraviolet-curing adhesive material, and the second adhesive material is an adhesive sheet.

8. The portable device according to claim 7, wherein an adhesive strength of the second adhesive material is greater than an adhesive strength of the fixed adhesive material.

9. The portable device according to claim 8, wherein the adhesive strength of the adhesive sheet of the second adhesive material is sufficient to adhere an elastic layer to a rigid layer while straightening the elastic layer having a warp.

10. A method of manufacturing a display device comprising the steps of:

providing a display panel having a glass substrate and a polarizer adhered to the glass substrate, and a touch panel which is made of a resin material, and a front window which is made of a glass,

adhering the touch panel to the front window by an adhesive sheet, and

adhering the touch panel which is adhered to the front window to the polarizer of the display panel by an ultraviolet-curing adhesive material.

11. A method according to claim 10, wherein the step of providing the display panel, the touch panel and the front window is a first step, the step of adhering the touch panel to the front window by an adhesive sheet is a second step, and the step of adhering the touch panel to the polarizer of the display panel by the ultraviolet-curing adhesive material is a third step carried out in the above order.

12. A method according to claim 11, wherein the adhesive sheet has an adhesive strength greater than an adhesive strength of the ultraviolet-curing adhesive material.