ILLUMINATION DEVICE, DISPLAY DEVICE, AND TELEVISION RECEIVING DEVICE

• Main Authors: HARADA MASANOBU, MATSUI KEITARO
• Format: Patent
• Language: English; Japanese
• Published: 13.12.2018
• 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; FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-LINEAR OPTICS; NON-PORTABLE LIGHTING DEVICES; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR; SYSTEMS THEREOF; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS; WEAPONS

To provide an illumination device, a display device, and a television receiving device that prevent occurrence of color unevenness.SOLUTION: In a liquid crystal display device 10, a backlight unit (lighting device) 12 includes LEDs (light source) 17, a light guide plate 19 including a light entry end surface 19b on at least a part of an outer peripheral end surface where light from the LED 17 enters and a light output plate surface 19a on a plate surface where light is output, and a wavelength conversion sheet (wavelength conversion member) 20 disposed so as to overlap the light output plate surface 19a of the light guide plate 19 and containing a phosphor for wavelength-converting the light from the LEDs 17, wherein the wavelength conversion sheet 20 includes an increased phosphor portion 27 wherein at least a part of an outer peripheral side portion 20OP has a phosphor content per unit area that is greater than that in a central portion 20IP.SELECTED DRAWING: Figure 2 【課題】色ムラの発生を抑制する、照明装置、表示装置、及びテレビ受信装置を提供する。【解決手段】液晶表示装置１０において、バックライト装置（照明装置）１２は、ＬＥＤ（光源）１７と、外周端面の少なくとも一部にＬＥＤ１７からの光が入射される入光端面１９ｂと、板面に光を出射させる出光板面１９ａを有する導光板１９と、導光板１９の出光板面１９ａに重なる形で配されＬＥＤ１７からの光を波長変換する蛍光体を含有する波長変換シート（波長変換部材）２０であって、外周側部分２０ＯＰの少なくとも一部が中央側部分２０ＩＰよりも単位面積当たりの蛍光体の含有量が多くなる多蛍光体部２７を有する。【選択図】図２