LIGHTING APPARATUS, DISPLAY DEVICE AND ELECTRONIC EQUIPMENT

• Main Authors: FURUKAWA TOKUMASA, OKUYAMA KENTARO
• Format: Patent
• Language: English
• Published: 02.05.2013
• 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; ELECTRIC HEATING; ELECTRIC LIGHTING 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; 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 provide a lighting apparatus that can utilize backlight, and a display device as well as an electronic equipment equipped with the apparatus.SOLUTION: The display device includes a display panel and the lighting apparatus for illuminating the display panel. The lighting apparatus includes a light guide plate having a light source at its side face, a diffusion modulation element can modulating between a first state of diffusing light from the light source and a second state of transmitting incident light from a backside to a front side, and a reflective modulation element can modulating between a third state of reflecting transmitted diffusion light of the diffusion modulation element to a front side and a fourth state of transmitting the incident light from the backside to a front side, in that order from a display panel side.