OPTICAL SHEET, BACKLIGHT UNIT USING THE SAME AND DISPLAY DEVICE

PROBLEM TO BE SOLVED: To efficiently take out light from a light source and to suppress luminance unevenness in an optical sheet, a backlight unit using the same and a display device. SOLUTION: The optical sheet 21 used for the display device 100 has a lens part 6a in which an array-like lens surfac...

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Bibliographische Detailangaben
1. Verfasser:	FUKUNAGA SATOHIRO
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 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 TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To efficiently take out light from a light source and to suppress luminance unevenness in an optical sheet, a backlight unit using the same and a display device. SOLUTION: The optical sheet 21 used for the display device 100 has a lens part 6a in which an array-like lens surface 6b is formed on one sheet surface of a main body sheet 6 and a light shielding pattern for forming an optical aperture for transmitting incident light at the opposite position of the lens part 6a and the light shielding pattern is constituted of a light reflection layer 5 having an incident side reflection surface for forming an incident side aperture 6e on the other sheet surface of the main body sheet 6 and a side reflection surface arranged so as to expand width of an optical aperture toward the lens part 6a in the sheet thickness direction from the incident side aperture 6e. COPYRIGHT: (C)2008,JPO&INPIT