Touch screen

• US 20050012722A1
• Filed: 12/31/2003
• Published: 01/20/2005
• Est. Priority Date: 07/18/2003
• Status: Abandoned Application

• Current Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Original Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Inventors: Chon, Hwa-Su
• Application Number:
  US10/750,661
• Publication Number:
  US 20050012722A1
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G02F 1/133502 Antiglare, refractive index matching layers
• CPC Class Codes: G02F 1/13363 Birefringent elements, e.g. for optical compensation
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display

Abstract

A touch screen improved with reflection rate of light, wherein a retardation film at a touch panel is laminated with special ink in multiple layers to pass through an anti-reflection treatment for reduction of reflection rate of light glaring on eyes caused by diffused reflection of light and for improvement of permeability rate of light coming from an LCD mounted thereunder, thereby optimizing a brightness of the touch screen.

Claims

1. A touch screen improved with reflection rate of light comprising:

a touch panel including an upper structure formed as a lamination of a polarizing film, a retardation film and a first glass plate, a lower structure formed as a lamination of a second glass plate and a retardation film, conductor coating layers each arranged on an opposing surface of the upper and lower structure, and transparent ink sealed in a space between the conductor coating layers; and

an LCD mounted under the touch panel,

wherein the touch panel is laminated with an anti-reflection (AR) film applied with anti-reflection treatment.

2. The touch screen as defined in claim 1, wherein the AR film is laminated to a surface under the retardation film of the lower structure.