LIGHTING SYSTEM, LIQUID CRYSTAL DISPLAY DEVICE AND ELECTRONIC EQUIPMENT

• Main Authors: MOMOSE YOICHI, URANO NOBUTAKA
• Format: Patent
• Language: English
• Published: 04.02.2013
• Subjects: 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; FREQUENCY-CHANGING; 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 ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; SYSTEMS THEREOF; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS; WEAPONS

PROBLEM TO BE SOLVED: To provide: a lighting system that needs fewer waste material portion even when a plurality of light guide plates having a projection portion and a concave portion for positioning are cut out from a large plate material; a liquid crystal display device having the lighting system; and an electronic equipment having the liquid crystal display device.SOLUTION: In a light guide plate 80 used for the liquid crystal display device and the lighting system, a concave portion 803a is installed at the side end face 803 on one side X1 in X axis direction and a projection portion 804b is formed at the side end face 804 on the other side X2 in the X axis direction, thereby, by using the concave portion 803a and the projection portion 804b, the light guide plate 80 can be positioned at a prescribed position of a frame body 9. The concave portion 803a and the projection portion 804b are formed at positions where they face each other in the X axis direction, and the dimensions of the projection portion 804b are equal to or smaller than the dimensions of the concave portion 803a.