View angle controlling sheet and liquid crystal display apparatus using the same

(19)

(11)

EP 1 659 441 A8

(12)	CORRECTED EUROPEAN PATENT APPLICATION
	Note: Bibliography reflects the latest situation

(15)	Correction information:
	Corrected version no 1 (W1 A1)

(48)	Corrigendum issued on:
	02.08.2006 Bulletin 2006/31

(43)	Date of publication:
	24.05.2006 Bulletin 2006/21

(21)	Application number: 05257105.6

(22)	Date of filing: 17.11.2005

(51)

International Patent Classification (IPC):

G02F 1/1335^(2006.01)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
	Designated Extension States:
	AL BA HR MK YU

(30)

Priority:

18.11.2004 JP 2004333919
16.09.2005 JP 2005270966

(71)	Applicant: DAI NIPPON PRINTING CO., LTD.
	Tokyo-to, 162-8001 (JP)

(72)	Inventors:
	Amemiya, Hiroyuki, c/o Dai Nippon Printing Co. Ltd Shinjuku-ku Tokyo-to 162-8001 (JP) Watanabe, Osamu, c/o Dai Nippon Printing Co., Ltd. Shinjuku-ku Tokyo-to 162-8001 (JP) Ichikawa, Nobuhiko, c/o Dai Nippon Printing Co Ltd Shinjuku-ku Tokyo-to 162-8001 (JP)

(74)	Representative: Hatt, Anna Louise
	Beck Greener Fulwood House 12 Fulwood Place London WC1V 6HR London WC1V 6HR (GB)

(54)	View angle controlling sheet and liquid crystal display apparatus using the same

(57) The present invention is to provide a view angle controlling sheet to be disposed between the light source and the display panel of a liquid crystal display apparatus, effective for limiting the light beam output angle. A view angle controlling sheet (S1) to be disposed between the light source (54) and the liquid crystal panel (52) of a liquid crystal display apparatus (50), wherein the view angle controlling sheet (S1) has lens parts (12,12,···) having a trapezoidal cross sectional shape arranged by a predetermined interval and the wedge parts (14,14,···) between the adjacent lens parts (12,12,···) is filled with a light absorbing material such that the wedge part (14) has the top end (18) disposed to the observer side and the bottom surface (17) to the light source side and with the premise that the angle formed by the slant face portion of the wedge part (14) and the normal of the light output plane is θ, θ is in a range of 3° ≤ θ ≤ 15°.