OPTICAL SHEET, ILLUMINATION DEVICE USING THE SAME, AND DISPLAY

PROBLEM TO BE SOLVED: To propose an optical sheet which is thin, causes no wrinkle caused by heat from a backlight, and has excellent light-converging function and high transmission performance, and to propose a backlight unit and a display using the optical sheet. SOLUTION: The optical sheet is use...

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Bibliographische Detailangaben
1. Verfasser:	SAKAI NATSUKA
Format:	Patent
Sprache:	eng
Schlagworte:	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 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 ELEMENTS, SYSTEMS, OR APPARATUS 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
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To propose an optical sheet which is thin, causes no wrinkle caused by heat from a backlight, and has excellent light-converging function and high transmission performance, and to propose a backlight unit and a display using the optical sheet. SOLUTION: The optical sheet is used to control an illumination light path of a backlight unit for a display. In addition, at the end part on the plane of the optical sheet, there exists an area in which the coefficient of linear expansion of the optical sheet at 80°C is larger than its coefficient of linear expansion at its center part at 80°C. COPYRIGHT: (C)2010,JPO&INPIT