광학 부재 그리고 그 광학 부재를 사용한 백라이트 유닛 및 화상 표시 장치

• Main Authors: MORISHIMA RYOTA, KISHI ATSUSHI, HATTORI DAISUKE, YOSHIKAWA TAKAHIRO
• Format: Patent
• Language: Korean
• Published: 02.12.2022
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; BLASTING; CHEMISTRY; 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; DYES; 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; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-LINEAR OPTICS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; NON-PORTABLE LIGHTING DEVICES; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PAINTS; PHYSICS; POLISHES; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR; SYSTEMS THEREOF; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; USE OF MATERIALS AS ADHESIVES; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS; WEAPONS

휘도의 균일성이 우수한 광학 부재가 제공된다. 본 발명의 광학 부재는, 광원으로부터의 광이 입사되는 단면과, 입사된 광을 출사하는 출사면과, 출사면과 반대측의 면에 형성된 광 취출 패턴을 갖는 도광판과 ; 도광판에 양면 점착 필름을 개재하여 첩합된 반사판 ; 을 구비한다. 양면 점착 필름은, 도광판 측에서부터 순서대로, 제 1 점착제층과 저굴절률층과 제 2 점착제층을 갖는다. 이 광학 부재에 있어서는, 도광판의 외연은 양면 점착 필름의 외연보다 외측에 위치하고, 양면 점착 필름의 외연은 광 취출 패턴의 외연보다 외측에 위치하고 있다. There is provided an optical member that can achieve a backlight unit excellent in brightness uniformity. The optical member includes: a light guide plate having an end surface that light from a light source enters, an emitting surface from which the entered light is emitted, and a light extraction pattern arranged on a surface opposite to the emitting surface; and a reflective plate bonded to the light guide plate via a double-sided pressure-sensitive adhesive film. An outer edge of the light guide plate is positioned outside an outer edge of the double-sided pressure-sensitive adhesive film, and the outer edge of the double-sided pressure-sensitive adhesive film is positioned outside an outer edge of the light extraction pattern.