DISPLAY DEVICE AND TELEVISION RECEPTION DEVICE

• Main Author: YOKOTA TADASHI
• Format: Patent
• Language: English; Japanese
• Published: 05.11.2015
• Subjects: ADVERTISING; BASIC ELECTRIC ELEMENTS; BLASTING; CRYPTOGRAPHY; 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; DISPLAY; DISPLAYING; EDUCATION; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; FREQUENCY-CHANGING; FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF; HEATING; LABELS OR NAME-PLATES; LIGHTING; MECHANICAL ENGINEERING; NON-LINEAR OPTICS; NON-PORTABLE LIGHTING DEVICES; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; PICTORIAL COMMUNICATION, e.g. TELEVISION; SEALS; SEMICONDUCTOR DEVICES; SIGNS; 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

PROBLEM TO BE SOLVED: To improve color reproducibility while suppressing a decrease in luminance.SOLUTION: A liquid crystal display device 10 includes: LEDs 17 which emit blue light having a light emission spectrum of less than 25 nm in half-value width at a peak wavelength of 440 nm±2 nm to 450 nm±2 nm, green light having a light emission spectrum of less than 52 nm in half-value width at a peak wavelength of 525 nm±2 nm to 540 nm±2 nm, and red light having a light emission spectrum of less than 40 nm in half-value width at a peak wavelength of 620 nm±2 nm to 645 nm±2 nm; and color filters 29 having a blue coloration part 29B which has a transmission spectrum of less than 100 nm in half-value width at a peak wavelength of 440 nm to 461.5 nm, a green coloration part 29G which has a transmission spectrum of less than 90 nm in half-value width at a peak wavelength of 510 nm to 533.5 nm, and a red coloration part 29R which has a transmission spectrum at the half-value of a peak wavelength of 580 nm or larger. 【課題】輝度低下を抑制しつつ、色再現性を向上させる。【解決手段】液晶表示装置１０は、ピーク波長が４４０ｎｍ?２ｎｍ〜４５０ｎｍ?２ｎｍの範囲で半値幅が２５ｎｍ未満の発光スペクトルの青色光と、ピーク波長が５２５ｎｍ?２ｎｍ〜５４０ｎｍ?２ｎｍの範囲のピークで半値幅が５２ｎｍ未満の発光スペクトルの緑色光と、ピーク波長が６２０ｎｍ?２ｎｍ〜６４５ｎｍ?２ｎｍの範囲で半値幅が４０ｎｍ未満の発光スペクトルの赤色光とを発するＬＥＤ１７と、ピーク波長が４４０ｎｍ〜４６１．５ｎｍの範囲で半値幅が１００ｎｍ未満の透過スペクトルを有する青色着色部２９Ｂと、ピーク波長が５１０ｎｍ〜５３３．５ｎｍの範囲で半値幅が９０ｎｍ未満の透過スペクトルを有する緑色着色部２９Ｇと、ピークの半値の波長が５８０ｎｍ以上の透過スペクトルを有する赤色着色部２９Ｒとを備えるカラーフィルタ２９と、を備える。【選択図】図１３