Surface emitting device and liquid crystal display

To provide source images is increased to enhance the uniformity of luminance distribution. A surface emitting device includes: a diffusing sheet constituting a light exiting surface; a reflector disposed opposite to the diffusing sheet; light sources disposed between the diffusing sheet and the refl...

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Bibliographische Detailangaben
Hauptverfasser:	HOSHI MITSUNARI, OBATA KEI
Format:	Patent
Sprache:	eng
Schlagworte:	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 NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Beschreibung
Zusammenfassung:	To provide source images is increased to enhance the uniformity of luminance distribution. A surface emitting device includes: a diffusing sheet constituting a light exiting surface; a reflector disposed opposite to the diffusing sheet; light sources disposed between the diffusing sheet and the reflector; and a prism sheet (light-source-image division sheet) disposed between the diffusing sheet and the light sources. The prism sheet has linear protrusions on the front surface thereof, and a flat portion parallel to the sheet surface between the adjacent linear protrusions. This generates light-source images through the flat portions in addition to the divided light-source images through the linear protrusions 16a to increase the number of light-source images, thereby improving luminance uniformity.