JP4784496B2 - 集光性シート貼合光拡散板 - Google Patents
集光性シート貼合光拡散板 Download PDFInfo
- Publication number
- JP4784496B2 JP4784496B2 JP2006321457A JP2006321457A JP4784496B2 JP 4784496 B2 JP4784496 B2 JP 4784496B2 JP 2006321457 A JP2006321457 A JP 2006321457A JP 2006321457 A JP2006321457 A JP 2006321457A JP 4784496 B2 JP4784496 B2 JP 4784496B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- condensing sheet
- bonded
- diffusion plate
- adhesive layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0273—Diffusing elements; Afocal elements characterized by the use
- G02B5/0278—Diffusing elements; Afocal elements characterized by the use used in transmission
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
- G02B5/0221—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures the surface having an irregular structure
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
- G02B5/0231—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures the surface having microprismatic or micropyramidal shape
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/0006—Arrays
- G02B3/0012—Arrays characterised by the manufacturing method
- G02B3/0031—Replication or moulding, e.g. hot embossing, UV-casting, injection moulding
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
- G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Optical Elements Other Than Lenses (AREA)
- Planar Illumination Modules (AREA)
Description
前記片面(2a)には凹凸が設けられ、
前記粘着剤層(3)が前記凹凸の底部(2a1)に接触しないように、前記集光性シート(4)が前記片面(2a)に貼合されている
ことを特徴とする集光性シート貼合光拡散板(1)を提供するものである。
本発明の集光性シート貼合光拡散板(1)を構成する光拡散板(2)としては通常、透明材料中に光拡散剤が分散された板状の成形体が用いられる。
マット面状である場合、凹凸の十点平均粗さ(Rz)は通常5μm〜100μmである。
片面(2a)がランダムな凹凸からなるマット面状の光拡散板(2)に、無色透明な粘着剤層(3)を介して、集光性シート〔市販の液晶ディスプレイ装置(8)を構成するバックライト装置(6)に組み込まれて使用されていたもので、ポリエステルフィルム(厚み150μm)の片面に頂角(α)90°、深さ25μmのV溝がピッチ50μmで形成されたもの。〕(4)を貼合して、集光性シート貼合光拡散板(1)を得た。光拡散板の片面(2a)に設けたマット面の凹凸の十点平均粗さ(Rz)は、JIS B0601:2001に従い測定したところ、25.3μmであった。
片面(2a)がランダムな凹凸からなるマット面状の光拡散板(2)に、無色透明な粘着剤層(3)を介して、実施例1で用いたと同じ集光性シート(4)を貼合して、集光性シート貼合光拡散板(1)を得た。光拡散板の片面(2a)に設けたマット面の凹凸の十点平均粗さ(Rz)は、JIS B0601:2001に従い測定したところ、1.79μmであった。この集光性シート貼合光拡散板(1)は、片面の凹凸の底部(2a1)が粘着剤層(3)と接触しており、空隙(9)は殆ど存在せず、空隙(9)の全面積(S9)は、集光性シート貼合光拡散板(1)の全面積(S1)の1%未満であった。
3:粘着剤層 4:集光性シート 5:光源 6:バックライト装置
7:液晶セル 8:直下型液晶ディスプレイ装置 9:空隙
L:光
Claims (3)
- 光拡散板の片面に粘着剤層を介して集光性シートが貼合されてなり、
前記片面には凹凸が設けられ、
前記粘着剤層が前記凹凸の底部に接触しないように、前記集光性シートが前記片面に貼合されていることを特徴とする集光性シート貼合光拡散板。 - 請求項1に記載の集光性シート貼合光拡散板および該集光性シート貼合光拡散板の背面側に配置された光源を備え、
集光性シート貼合光拡散板は前記集光性シートが前面側となるように配置されているバックライト装置。 - 請求項2に記載のバックライト装置および該バックライト装置の前面側に配置された液晶セルを備えた直下型液晶ディスプレイ装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006321457A JP4784496B2 (ja) | 2006-11-29 | 2006-11-29 | 集光性シート貼合光拡散板 |
TW097117688A TW200946967A (en) | 2006-11-29 | 2008-05-14 | Light collecting sheet-laminated light diffuser plate |
US12/127,183 US20090129059A1 (en) | 2006-11-29 | 2008-05-27 | Light collecting sheet-laminated light diffuser plate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006321457A JP4784496B2 (ja) | 2006-11-29 | 2006-11-29 | 集光性シート貼合光拡散板 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2008134514A JP2008134514A (ja) | 2008-06-12 |
JP4784496B2 true JP4784496B2 (ja) | 2011-10-05 |
Family
ID=39559390
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006321457A Expired - Fee Related JP4784496B2 (ja) | 2006-11-29 | 2006-11-29 | 集光性シート貼合光拡散板 |
Country Status (3)
Country | Link |
---|---|
US (1) | US20090129059A1 (ja) |
JP (1) | JP4784496B2 (ja) |
TW (1) | TW200946967A (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008139736A (ja) * | 2006-12-05 | 2008-06-19 | Sumitomo Chemical Co Ltd | 光拡散板 |
US8545062B2 (en) * | 2009-12-08 | 2013-10-01 | Industrial Technology Research Institute | Light uniformization structure and light emitting module |
US20110134646A1 (en) * | 2009-12-08 | 2011-06-09 | Industrial Technology Research Institute | Light uniformization structure and light emitting module |
JP2011215352A (ja) * | 2010-03-31 | 2011-10-27 | Sony Corp | 光学シート積層体、照明装置および表示装置 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TW200523503A (en) * | 2003-09-29 | 2005-07-16 | Sony Corp | Backlight, light guiding plate, method for manufacturing diffusion plate and light guiding plate, and liquid crystal display device |
US7446827B2 (en) * | 2004-10-15 | 2008-11-04 | 3M Innovative Properties Company | Direct-lit liquid crystal displays with laminated diffuser plates |
JP2007065120A (ja) * | 2005-08-30 | 2007-03-15 | Funai Electric Co Ltd | 液晶モジュールの直下型バックライト装置 |
-
2006
- 2006-11-29 JP JP2006321457A patent/JP4784496B2/ja not_active Expired - Fee Related
-
2008
- 2008-05-14 TW TW097117688A patent/TW200946967A/zh unknown
- 2008-05-27 US US12/127,183 patent/US20090129059A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
US20090129059A1 (en) | 2009-05-21 |
JP2008134514A (ja) | 2008-06-12 |
TW200946967A (en) | 2009-11-16 |
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