PROTECTIVE COVER FOR LIQUID CRYSTAL DISPLAY

• Main Authors: TSUCHIYA MASAO, DOI KUNIHIKO
• Format: Patent
• Language: English
• Published: 17.02.2011
• 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

PROBLEM TO BE SOLVED: To provide a thin and light-weight protective cover for liquid crystal display device improved in abrasion resistance, which has functions of protecting a liquid crystal display device and converting linearly polarized light from liquid crystal display into circularly polarized light or elliptically polarized light, in order to prevent an image on a screen from being obscured even when a user of a liquid crystal display device observes the screen with polarizing spectacles on. SOLUTION: The protective cover for liquid crystal display for protecting the display screen of a liquid crystal display device including a polarizing plate on an observation side has a polymethyl methacrylate resin layer on at least one surface of a polycarbonate resin layer, and changes the linearly polarized light projected from a liquid crystal display device into the circularly polarized light or elliptically polarized light. COPYRIGHT: (C)2011,JPO&INPIT