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1. (WO2018225463) UPPER-SIDE LIGHT DIFFUSER SHEET AND BACKLIGHT UNIT EQUIPPED WITH SAME
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Pub. No.:
WO/2018/225463
International Application No.:
PCT/JP2018/018661
Publication Date:
13.12.2018
International Filing Date:
15.05.2018
IPC:
G02B 5/02
(2006.01) ,
F21S 2/00
(2016.01) ,
G02F 1/13357
(2006.01) ,
F21Y 115/10
(2016.01)
G
PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
5
Optical elements other than lenses
02
Diffusing elements; Afocal elements
F
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
21
LIGHTING
S
NON-PORTABLE LIGHTING DEVICES OR SYSTEMS THEREOF
2
Systems of lighting devices, not provided for in main groups F21S4/-F21S10/119
[IPC code unknown for ERROR IPC Code incorrect: invalid subgroup (0=>999999)!][IPC code unknown for F21Y 115/10]
Applicants:
恵和株式会社 KEIWA INC.
[JP/JP]; 東京都中央区日本橋茅場町二丁目10番5号 10-5, Nihonbashi-Kayabacho 2-chome, Chuo-ku, Tokyo 1030025, JP
Inventors:
野中 忠幸 NONAKA, Tadayuki
; --
宮本 佳奈 MIYAMOTO, Kana
; --
前田 裕己 MAEDA Hiromi
; --
Agent:
特許業務法人 有古特許事務所 PATENT CORPORATE BODY ARCO PATENT OFFICE
; 兵庫県神戸市中央区東町123番地の1 貿易ビル3階 3rd Fl., Bo-eki Bldg., 123-1, Higashimachi, Chuo-ku, Kobe-shi, Hyogo 6500031, JP
Priority Data:
2017-111848
06.06.2017
JP
Title
(EN)
UPPER-SIDE LIGHT DIFFUSER SHEET AND BACKLIGHT UNIT EQUIPPED WITH SAME
(FR)
FEUILLE DE DIFFUSEUR DE LUMIÈRE CÔTÉ SUPÉRIEUR ET UNITÉ DE RÉTROÉCLAIRAGE ÉQUIPÉE DE CELLE-CI
(JA)
上用光拡散シートおよびそれを備えたバックライトユニット
Abstract:
(EN)
An upper-side light diffuser sheet is provided on the front surface of a prism sheet in a backlight unit of a liquid crystal display device, the upper-side light diffuser sheet having a base layer and a light-diffusing layer stacked on the front surface of the base layer. The light-diffusing layer includes a resin matrix and resin beads diffused in the resin matrix. The resin beads include a first resin bead group having an average particle diameter D50 of 1.9 µm to 3.3 µm and a second resin bead group having an average particle diameter D50 greater than the average particle diameter D50 of the first resin bead group. The mass ratio of the second resin bead group is 30% to 50% of the entire resin beads. The coating amount of the light-diffusing layer is greater than 1.7 g/m
2
and less than 3.0 g/m
2
.
(FR)
L'invention concerne une feuille de diffuseur de lumière côté supérieur disposée sur la surface avant d'une feuille de prisme dans une unité de rétroéclairage d'un dispositif d'affichage à cristaux liquides, la feuille de diffuseur de lumière côté supérieur ayant une couche de base et une couche de diffusion de lumière empilée sur la surface avant de la couche de base. La couche de diffusion de lumière comprend une matrice en résine et des billes de résine diffusées dans la matrice en résine. Les billes de résine comprennent un premier groupe de billes de résine ayant un diamètre de particule moyen D50 de 1,9 µm à 3,3 µm et un second groupe de billes de résine ayant un diamètre de particule moyen D50 supérieur au diamètre de particule moyen D50 du premier groupe de billes de résine. Le rapport en masse du second groupe de billes de résine est de 30 % à 50 % de la totalité des billes de résine. La quantité de revêtement de la couche de diffusion de lumière est supérieure à 1,7 g/m
2
et inférieure à 3,0 g/m
2
.
(JA)
液晶表示装置のバックライトユニットにおけるプリズムシートの表面側に配設される上用光拡散シートであって、基材層と、基材層の表面側に積層される光拡散層とを備え、光拡散層は、樹脂マトリックスと、樹脂マトリックス中に分散する樹脂ビーズとを有し、樹脂ビーズは、平均粒子径D50が1.9μm以上3.3μm以下の第1樹脂ビーズ群と、第1樹脂ビーズ群の平均粒子径D50より大きい平均粒子径D50を有する第2樹脂ビーズ群とを含み、樹脂ビーズ全体に占める第2樹脂ビーズ群の質量比率が、30%以上50%以下であり、光拡散層の塗工量が、1.7g/m
2
より大きく3.0g/m
2
より小さい。
Designated States:
AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language:
Japanese (
JA
)
Filing Language:
Japanese (
JA
)