TOUCH SCREEN-INTEGRATED LIQUID CRYSTAL DISPLAY

• US 20110248936A1
• Filed: 07/09/2010
• Published: 10/13/2011
• Est. Priority Date: 04/08/2010
• Status: Abandoned Application

• Current Assignee: Samsung Electro-Mechanics Co., Ltd. (Samsung Group)
• Original Assignee: Samsung Electro-Mechanics Co., Ltd. (Samsung Group)
• Inventors: JIN, Yong Hyun, OH, Yong Soo, LEE, Jong Young, KIM, Sang Hwa
• Application Number:
  US12/833,572
• Publication Number:
  US 20110248936A1
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• 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: G06F 3/045 using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact
• CPC Class Codes: H04N 5/66 Transforming electric information into light information scanning details H04N3/00

Abstract

Disclosed herein is a touch screen-integrated liquid crystal display, including: a backlight unit emitting light; a first polarizing plate disposed on the backlight unit; a liquid crystal panel disposed on the first polarizing plate and creating an image using the light emitted from the backlight unit; a touch screen disposed on the liquid crystal panel; a cholesteric liquid crystal plate disposed on the touch screen; a phase difference plate disposed on the cholesteric liquid crystal plate; and a second polarizing plate disposed on the phase difference plate.

Claims

1. A touch screen-integrated liquid crystal display, comprising:

a backlight unit emitting light;

a first polarizing plate disposed on the backlight unit;

a liquid crystal panel disposed on the first polarizing plate and creating an image using the light emitted from the backlight unit;

a touch screen disposed on the liquid crystal panel;

a cholesteric liquid crystal plate disposed on the touch screen;

a phase difference plate disposed on the cholesteric liquid crystal plate; and

a second polarizing plate disposed on the phase difference plate.

2. The touch screen-integrated liquid crystal display according to claim 1, further comprising:

a diffusion sheet disposed between the liquid crystal panel and the touch screen.

3. The touch screen-integrated liquid crystal display according to claim 1, further comprising:

a protective film disposed on the second polarizing plate.

4. The touch screen-integrated liquid crystal display according to claim 1, wherein an upper substrate of the liquid crystal panel and a lower substrate of the touch screen are formed into one substrate.

5. The touch screen-integrated liquid crystal display according to claim 1, wherein the cholesteric liquid crystal plate is formed by coating cholesteric liquid crystal between the upper substrate of the touch screen and the phase difference plate.