Liquid crystal panel and liquid crystal display

• Main Authors: KINJOU, NAOTAKA, HAYASHI, DAISUKE, NISHIBE, TAKESHI, ISHIDA, HIDEKI, KITAGAWA, TAKEHARU
• Format: Patent
• Language: English; French; German
• Published: 09.01.2008
• 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

The present invention provides a liquid crystal panel having a high contrast ratio in the front direction. The liquid crystal panel includes a first polarizing plate (51), a second polarizing plate (52), and a liquid crystal cell (10), in which the first polarizing plate is arranged on a display surface side and the second polarizing plate is arranged on a back surface side of the liquid crystal cell. The first polarizing plate includes a first polarizer (21) and a first retardation layer (31) arranged between the first polarizer and the liquid crystal cell. The second polarizing plate includes a second polarizer (22) and a second retardation layer (32) arranged between the second polarizer and the liquid crystal cell. An index ellipsoid of the first retardation layer satisfies nx>ny‰¥nz, and an index ellipsoid of the second retardation layer satisfies nx=ny>nz. The transmittance of the second polarizing plate is greater than that of the first polarizing plate.