公开(公告)号：EP2453265A4

公开(公告)日：2017-12-13

申请号：EP10797083

申请日：2010-07-02

Applicant: DAINIPPON PRINTING CO LTD

Inventor： KASHIWAGI TSUYOSHI ,  OSAWA FUTOSHI

IPC: G02B5/00 ,  B29D11/00 ,  F21S2/00 ,  F21V3/04 ,  G02B5/20 ,  G02F1/1335 ,  G09F9/00

CPC classification number: G02B5/201 ,  B29D11/0074 ,  G02B2207/123

Abstract: The present invention provides a method for manufacturing optical sheet having an improved appearance, optical sheet, and an image display device having the optical sheet. The method for manufacturing optical sheet having a plurality of layers in which at least one layer is an optical functional sheet layer comprises: light-transmissive portions configured to be arranged in a row along the surface of a base material layer; and light-absorbing portions arranged between the light-transmissive portions, the method comprising the steps of: forming the light-transmissive portions on one side of the base material layer; and forming the light-absorbing portions repeatedly by filling a binder made of a resin in which light-absorbing particles are dispersed in the gaps between the light-transmissive portions and curing the binder, wherein at least the last step of the repeating step for forming the light-absorbing portions is carried out so that the density of the light-absorbing particles contained in the binder is lower than the density of the same at the first step for forming the light-absorbing portion. The optical sheet is produced by the method; and the image display device is provided with the optical sheet.

公开(公告)号：EP0882998A4

公开(公告)日：1999-04-14

申请号：EP97913455

申请日：1997-11-27

Applicant: DAINIPPON PRINTING CO LTD

Inventor： OSAWA FUTOSHI ,  GOTO MASAHIRO

IPC: B29D11/00 ,  G02B3/00 ,  G02B3/08 ,  G03B21/60 ,  G03B21/62 ,  B05D5/06 ,  G02B5/02

CPC classification number: G03B21/625 ,  B29D11/00 ,  B29D11/00278 ,  G02B3/08

Abstract: The material cost and the facility cost can be lowered, the lens portion of a molded product includes no bubble, continuous production is possible by using a mold, the productivity is improved, and the cost is lowered by the reduction of molds. A resin composition for lens sheets is applied to a mold with multiple nozzles spaced in a direction generally perpendicular to the application direction along the mold, and a base member is placed on the resin composition applied to the mold. A projection sheet is also disclosed.