WIDE VIEWING IN-PLANE SWITCHING MODE LIQUID CRYSTAL DISPLAY

• Main Authors: AHN, GI HWAN, OH, YU MI
• Format: Patent
• Language: English; Korean
• Published: 15.04.2013
• Subjects: DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

PURPOSE: An in-plane switching mode liquid crystal display device is provided to reduce the light leakage of an inclined surface. CONSTITUTION: In an upper polarizing plate(20), the light emitted from a backlight unit(40) passes through a liquid crystal cell(30), a first second phase difference layer(21), a second phase difference layer(22), and a polarizer(23). In a lower polarizing plate(10), the light emitted from the backlight unit passes through a second protection film(13), a polarizer(12), and a third phase difference layer(11). The first phase difference layer has normal dispersion and flat dispersion properties. [Reference numerals] (10) Lower polarizing plate; (11) Phase difference layer; (12,23) Polarizer; (13,24) Protection film; (20) Upper polarizing plate; (21) First phase difference layer; (22) Second phase difference layer; (30) Liquid crystal cell; (AA) IPS liquid crystal cell;