Touch-panel display device

• US 9,874,967 B2
• Filed: 05/14/2015
• Issued: 01/23/2018
• Est. Priority Date: 05/15/2014
• Status: Active Grant

• Current Assignee: TPK Touch Solutions (Xiamen) Inc. (TPK Holding Co., Ltd.)
• Original Assignee: TPK Touch Solutions (Xiamen) Inc. (TPK Holding Co., Ltd.)
• Inventors: Wu, Xiaoyan, Ye, Huilin, Yu, Jing, Chiu, Tsung-Ke
• Primary Examiner(s): Marinelli, Patrick F
• Application Number:
  US14/712,875
• Publication Number:
  US 20150331515A1
• Time in Patent Office: 985 Days
• Field of Search: None
• CPC Class Codes: B32B 17/06 comprising glass as the main or only constituent of a layer, next to another layer of a specific material
• CPC Class Codes: B32B 17/1055 characterized by the resin layer, i.e. interlayer
• CPC Class Codes: B32B 2457/202 LCD, i.e. liquid crystal displays
• CPC Class Codes: B32B 2457/206 Organic displays, e.g. OLED
• CPC Class Codes: B32B 2457/208 Touch screens
• CPC Class Codes: B32B 27/08 of synthetic resin
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G02F 1/133528 Polarisers
• 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 3/042 by opto-electronic means
• CPC Class Codes: G06F 3/0445 using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
• CPC Class Codes: G09G 3/3208 organic, e.g. using organic light-emitting diodes [OLED]
• CPC Class Codes: G09G 3/36 using liquid crystals

Abstract

The present disclosure provides a touch-panel display device. The touch-panel display device comprises a substrate, a display module, a sensing module and a function layer. The substrate includes a first surface and a second surface on opposite sides of the substrate, respectively. The display module is proximal to the first surface of the substrate, and the sensing module is disposed between the display module and the substrate. The function layer, disposed on either the first surface or the second surface of the substrate, is configured to polarize light emitted from the display module towards the substrate.

Claims

1. A touch-panel display device, comprising:

a substrate having a first surface and a second surface diametrically opposite the first surface, wherein the substrate is divided into a viewable area and a non-viewable area distinct from the viewable area;

a masking layer that is directly in contact with the first surface of the substrate;

a first sensing electrode layer disposed directly on a first carrier substrate;

a first adhesive layer disposed between the substrate and the first carrier substrate, wherein the first adhesive layer is directly in contact with a sidewall and a bottom surface of the masking layer

a second adhesive layer that is directly in contact with the first sensing electrode layer;

a second sensing electrode layer in contact with the second adhesive layer;

a second carrier substrate that is directly in contact with the second sensing electrode layer;

a display module;

a third adhesive layer disposed directly between the display module and the second carrier substrate; and

a function layer in contact with the second surface of the substrate, wherein;

the function layer comprises a transmissive polymer film impregnated with a dichroic material; and

polarization of the function layer diminishes light reflected from sensing electrodes, disposed within the first sensing electrode layer and the second sensing electrode layer, concealing the sensing electrodes from the viewable area.

2. The touch-panel display device of claim 1, wherein:

the display module comprises a liquid crystal module comprising a liquid crystal layer and a first polarizer configured to polarize light incident upon the liquid crystal layer, and

a polarization direction of the first polarizer is orthogonal to a polarization direction of the function layer.

3. The touch-panel display device of claim 1, wherein the function layer only covers the viewable area.

4. The touch-panel display device of claim 1, wherein the function layer covers the viewable area and extends into the non-viewable area.

5. The touch-panel display device of claim 4, wherein the function layer extends a length of 0.1 millimeter (mm) to 0.2 mm from the viewable area into the non-viewable area of the substrate.

6. The touch-panel display device of claim 1, wherein the function layer covers the viewable area and the non-viewable area of the substrate.

7. The touch-panel display device of claim 1, further comprising a coating, wherein the coating comprises one of an anti-split (AS) film, an anti-glare (AG) film, an anti-reflection (AR) film or an anti-fingerprint (AF) film.

8. The touch-panel display device of claim 1, wherein the substrate comprises an optically transmissive material selected from glass, polymethyl methacrylate (PMMA), polyvinyl chloride (PVC), polypropylene (PP), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polycarbonate (PC) and polystyrene (PS).

9. The touch-panel display device of claim 1, wherein at least one of the first sensing electrode layer or the second sensing electrode layer comprises a material selected from one of metal oxides, nanometals, carbon nanotubes and graphene.

10. The touch-panel display device of claim 1, wherein the first carrier substrate comprises an optically transmissive material selected from glass, polymethyl methacrylate (PMMA), polyvinyl chloride (PVC), polypropylene (PP), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polycarbonate (PC) and polystyrene (PS).

11. The touch-panel display device of claim 1, wherein the second carrier substrate comprises an optically transmissive material selected from glass, polymethyl methacrylate (PMMA), polyvinyl chloride (PVC), polypropylene (PP), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polycarbonate (PC) and polystyrene (PS).

12. The touch-panel display device of claim 11, wherein the first carrier substrate comprises an optically transmissive material selected from glass, polymethyl methacrylate (PMMA), polyvinyl chloride (PVC), polypropylene (PP), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polycarbonate (PC) and polystyrene (PS).