COVERLAY FILM HAVING WHITE REFLECTION LAYER

PROBLEM TO BE SOLVED: To provide a light source device which is used for a liquid crystal display device and has little loss of light emitted from LED, and to provide a coverlay film which is desirably used for the light source device. SOLUTION: The coverlay film having a white reflection layer 14 w...

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Bibliographische Detailangaben
Hauptverfasser:	MACHIDA HIDEAKI, YONENAGA OSAMU, OKUZAWA RYOZO, IIZUKA TAKAYUKI
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS BLASTING CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS 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 SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY 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 MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS MECHANICAL ENGINEERING NON-LINEAR OPTICS NON-PORTABLE LIGHTING DEVICES OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PHYSICS PRINTED CIRCUITS SEMICONDUCTOR DEVICES 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 provide a light source device which is used for a liquid crystal display device and has little loss of light emitted from LED, and to provide a coverlay film which is desirably used for the light source device. SOLUTION: The coverlay film having a white reflection layer 14 with a reflection factor of ≥50% is stuck by thermal compression onto a flexible circuit board having a conductive circuit 9, and a light-emitting element such as LED 7 is mounted on the conductive circuit by soldering in the light source device. Light from the light-emitting element is reflected by a surface reflection layer of the coverlay film, and is efficiently input to a light guide plate without light absorption in the coverlay film and the flexible circuit board. COPYRIGHT: (C)2011,JPO&INPIT