LIQUID CRYSTAL DISPLAY FOR MITIGATING DETERIORATION OF CONTRAST

• Main Authors: MORITA, SATOSHI, YOSHIDA, KOUJI, TANAKA, SHINICHIRO, ATARASHIYA, TAKAO
• Format: Patent
• Language: English; Korean
• Published: 21.02.2005
• 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

PURPOSE: An LCD(Liquid Crystal Display) is provided to mitigate the deterioration of contrast caused by reflection of external light due to a black matrix by producing a phase difference between incident light and projected light of the LCD. CONSTITUTION: An LCD includes a liquid crystal layer(4) interposed between a pair of substrates(2,3) and polarizers(6,8) arranged on the sides of the substrates opposite to the liquid crystal layer. The LCD further includes a metal layer for reflecting light and a reflected light prevention member(5) for preventing the light reflected by the metal layer from being projected to a display plane from the corresponding polarizer. The metal layer is formed on the substrate of a display plane. The reflected light prevention member is disposed between the substrate of the display plane and the corresponding polarizer. The reflected light prevention member uses a quarter wave plate or a combination of a half wave plate and a quarter wave plate.