LIQUID CRYSTAL DISPLAY DEVICE

• Main Authors: SAKURAI YASUSHI, OHIRA EIJI
• Format: Patent
• Language: English; Japanese
• Published: 13.04.2015
• Subjects: 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; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-LINEAR OPTICS; NON-PORTABLE LIGHTING DEVICES; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; SYSTEMS THEREOF; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS; WEAPONS

PROBLEM TO BE SOLVED: To stably hold light source elements in a state where the light source elements are caused to face ends of light guide plates in liquid crystal display devices storing the light source elements mounted in a flexible wiring substrate in a storage recess part.SOLUTION: A liquid crystal display device has a liquid crystal display panel LCP and backlight, in which the backlight has: a light guide plate LGP; a plurality of light source element LEDs that are mounted on a flexible wiring substrate FPC; a backlight frame MFR that has a storage recess part COP formed; and a reflection sheet RS. The plurality of light source element LEDs are accommodated in the storage recess part COP, and the reflection sheet RS is not located between the flexible wiring substrate FPC and the light guide plate LGP, and the flexible wiring substrate FPC is adhered to a rear surface of the light guide plate LGP via an adhesion layer AD3. The adhesion layer AD3 is disposed in an area where, in a planar viewing, the adhesion layer does not face a light emission part of the light source element LED. 【課題】フレキシブル配線基板に実装された光源素子を収容凹部に収容した液晶表示装置において、光源素子を導光板の端部に対向させた状態で安定的に保持する。【解決手段】液晶表示パネルＬＣＰと、バックライトユニットとを有し、前記バックライトユニットは、導光板ＬＧＰと、フレキシブル配線基板ＦＰＣ上に実装された複数の光源素子ＬＥＤと、収容凹部ＣＯＰが形成されたバックライトフレームＭＦＲと、反射シートＲＳとを有する液晶表示装置において、前記複数の光源素子ＬＥＤは前記収容凹部ＣＯＰに収容され、前記反射シートＲＳは前記フレキシブル配線基板ＦＰＣと前記導光板ＬＧＰとの間には位置せず、前記フレキシブル配線基板ＦＰＣは前記導光板ＬＧＰの背面に接着層ＡＤ３を介して接着され、前記接着層ＡＤ３は、平面的に見て前記光源素子ＬＥＤの発光部と対向しない領域に配置されている。【選択図】 図１４