LIGHTING SYSTEM AND LIQUID CRYSTAL DISPLAY APPARATUS

• Main Authors: SHIMAZAKI KATSUSUKE, SHIBAZAKI TOSHISHIGE, SUGITA TATSUYA, ARATANI SUKEKAZU
• Format: Patent
• Language: English
• Published: 02.04.2009
• Subjects: BASIC ELECTRIC ELEMENTS; BLASTING; 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; ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; FREQUENCY-CHANGING; FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF; HEATING; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21Sand F21V, RELATING TO THEFORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THELIGHT EMITTED; LIGHTING; MECHANICAL ENGINEERING; NON-LINEAR OPTICS; NON-PORTABLE LIGHTING DEVICES; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; SEMICONDUCTOR DEVICES; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR; SYSTEMS THEREOF; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS; WEAPONS

PROBLEM TO BE SOLVED: To prevent the light use efficiency of a liquid crystal display apparatus from deterioration, which is caused by light loss arisen after the passage of the lenses to control light directionality. SOLUTION: Provided is a lighting system 50 for the liquid crystal display apparatus having a plurality of transmission parts 72 arranged two-dimensionally, the lighting system having a plurality of aspherical lenses 8, each of which is installed in response to each of the plurality of the transmission parts 72 and concentrates light for each of a plurality of the transmission parts 72; a plurality of light emission parts R1 installed in response to each focal point position of the plurality of aspherical lenses 8; and an electroluminescence layer 4 including a non-light emission region R2 disposed between the plurality of light emission parts R1. Each of the plurality of the aspherical lenses 8 respectively has an inner side lens surface including an intersection with an optical axis AX and an outer side lens surface surrounding the inner side lens surface, a curvature of the outer side lens surface being smaller than that of the inner side lens surface. COPYRIGHT: (C)2009,JPO&INPIT