Liquid crystal display apparatus having high definition

• Main Authors: OH-IDE TOSHIO, HIGA MASAKATSU
• Format: Patent
• Language: English
• Published: 15.05.2001
• Edition: 7
• 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 LOGIC ELEMENTS; OPTICS; PHYSICS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

A liquid crystal display apparatus includes first and second transparent substrates having optical anisotropy, a super twisted nematic liquid crystal body including liquid crystal molecules, an orientation device configured to urge the liquid crystal molecules to orient in a first direction in the inner surface of the first transparent substrate and in a second direction in the inner surface of the second transparent substrate, at least one phase retarder plate and at least one polarizing plate, wherein an angle between an absorption axis of the at least one polarizing plate and a direction of the largest refraction index of the at least one phase retarder plate adjacent to the at least one polarizing plate is 45°±22.5°, an angle between an absorption axis of the at least one polarizing plate and an orientation direction of the liquid crystal molecules in the inner surface of the second substrates adjacent to the polarizing plate is 45°±22.5°, a retardation value of the first and second substrates is less than 50 nm, an angle between a direction of the largest refraction index of the first substrate and an orientation direction of the liquid crystal molecules in the inner surface of the first substrate is within the range of -40° to 40°, and an angle between a direction of the largest refraction index of the second substrate and an orientation direction of the liquid crystal molecules in the inner surface of the second substrate is within a range of 50° to 130°.