Touch panel-integrated reflection type lcd device and electronic device

• US 20040080483A1
• Filed: 12/29/2003
• Published: 04/29/2004
• Est. Priority Date: 12/28/2000
• Status: Abandoned Application

• Current Assignee: Nokia Corporation
• Original Assignee: Nokia Corporation
• Inventors: Chosa, Yoshitaka
• Application Number:
  US10/451,927
• Publication Number:
  US 20040080483A1
• Time in Patent Office: Days
• US Class Current: 345/104
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G02F 1/133616 Front illuminating devices
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display

Abstract

A touch panel integrated type reflective LCD unit has a touch panel body A having a light transmitting property and an electrode, a front light guide body C having irregularities x for light reflection on its surface, and a reflective LCD body D, and is integrally constructed by sequentially laminating the touch panel body A, the front light guide body C and the reflective LCD body D into a multi-layer structure. In the touch panel integrated type reflective LCD unit, a coating layer B for covering the irregularities x for light reflection of the front light guide body C is sandwiched between the touch panel body A and the front light guide body C.

Claims

1. A touch panel integrated type reflective LCD unit comprising:

a touch panel body having a light transmitting property and an electrode,

a front light guide body having irregularities for light reflection on its surface, and

a reflective LCD body,

wherein the touch panel body, the front light guide body, and the reflective LCD body are laminated in sequence into a integrated structure,

wherein a coating layer for covering the irregularities for light reflection of the front light guide body is sandwiched between said touch panel body and said front light guide body.

2. A touch panel integrated type reflective LCD unit according to claim 1, wherein said coating layer is formed to be laminated without forming a space with respect to said touch panel body.

3. A touch panel integrated type reflective LCD unit according to claim 1 or 2, wherein a material constituting said coating layer is formed as a material having a refractive index different from that of said front light guide body.

4. A touch panel integrated type reflective LCD unit according to any one of claims 1 to 3, wherein said coating layer is formed as an ultraviolet protective layer.

5. An electronic apparatus having a screen display unit, said screen display unit is constructed by applying a touch panel integrated type reflective LCD unit according to any one of claims 1 to 4.