WO2011000636A1 - Lichtleiterplatte mit eingebetteten störstellen und verfahren zu dessen herstellung - Google Patents
Lichtleiterplatte mit eingebetteten störstellen und verfahren zu dessen herstellung Download PDFInfo
- Publication number
- WO2011000636A1 WO2011000636A1 PCT/EP2010/057108 EP2010057108W WO2011000636A1 WO 2011000636 A1 WO2011000636 A1 WO 2011000636A1 EP 2010057108 W EP2010057108 W EP 2010057108W WO 2011000636 A1 WO2011000636 A1 WO 2011000636A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- light
- plate
- film
- printing
- light guide
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0051—Diffusing sheet or layer
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0065—Manufacturing aspects; Material aspects
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—Cooling
- B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
- B29C48/914—Cooling of flat articles, e.g. using specially adapted supporting means cooling drums
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0055—Reflecting element, sheet or layer
Definitions
- Light guide plates which are illuminated at their edges and which emit the light fed in at the edges over at least one of the two perpendicular to the edges surfaces, are widely used for the backlighting of LCD screens, as well as signs and billboards, (see see Fig. 1)
- Light source (4) can leave the light guide plate (1) by overcoming the total reflection on the surfaces again, the light beams must be selectively deflected in the light guide.
- a common method for the deflection of the light rays is that at least one of the two surfaces of the light guide plate is provided with optical defects, which redirect or scatter incident light, so that the
- Total reflection can be overcome.
- impurities (2) roughening of the surface, engraving of the surface or printing of the surface, e.g. with a dot matrix used.
- Light guide plates with printed optical defects have the disadvantage that the optical defects can be damaged, for example, by mechanical action. This causes the task of the light guide, on the edge irradiated light evenly over the surfaces again, can no longer be met.
- Light guide plates with optical defects according to the prior art very expensive. After the production of the transparent plates, these must first be cut to size and then printed before the light guide plate can finally be finished by polishing and possibly mirroring. In particular, the printing of the plates must e.g. Cost-intensive screen printing process and is thus already very expensive equipment.
- a light guide plate for use in LCD screens according to the prior art is shown in Fig.l.
- EP 1492981 describes printed light-conducting bodies which are described from a transparent plate and a print applied thereon for outdoor applications. From EP 656548 light guide are known, the
- EP 1022129 discloses light-guiding bodies comprising a particle-free, light-conducting layer
- ISA / EP equipped layer which has a thickness in the range of 10 to 1500 microns, comprises barium sulfate particles.
- the light is passed over the PMMA layer, wherein the decoupling takes place through the diffuse layer.
- the light extraction can hardly be controlled because only the light is scattered normal to the propagation direction, which is the boundary layer to the diffused layer
- a low brightness of the light source of the light guide according to EP 1022129 leads to a high sensitivity
- the object of the invention is to provide a novel light guide plate, more precisely, a novel device for transporting light, as it is used as backlighting in LCD monitors application, with respect to the prior art improved properties.
- the object of the invention is also to protect the scattered or deflection of the light printed optical defects (2) so that their damage is prevented.
- Another object of the invention is to make the above-described typical production process for light guide plates more efficient and economical. Other tasks not explicitly mentioned emerge from the overall context of the following description, claims and examples.
- This device is composed of one or more light sources (4), a plate (1) and a
- the device according to the invention additionally has a foil (5) for protecting the printing.
- the printing (2) between the plate (1) and the film (5).
- the printing (2) is thereby completely enclosed by the plate (1) and the film (5).
- This has the advantage that the printing (2) is protected against abrasion as well as against external influences such as moisture, chemicals or weathering.
- the following are the terms light guide plate and
- Apparatus used for transporting light synonymously and denotes the entire apparatus consisting of the
- Extrusion manufactured component (1) of the light guide circumscribes.
- the plates can also be made by a cast casting process (Continuous Cast).
- Continuous Cast Continuous Cast
- impurity and printing are used below.
- the plate (1) consists of a transparent plastic, preferably made of acrylic glass, polycarbonate or a
- the plate (1) has a thickness between 1 mm and 20 mm, preferably between 2 mm and 10 mm, particularly preferably between 4 mm and 8 mm.
- acrylic glass is the acrylic glass commercially available under the trade name PLEXIGLAS® from Evonik Röhm GmbH & Co. KG.
- edges (3) of the plate are illuminated by means of the light source (s) (4) and are therefore in the function of a light introduction surface.
- the light is emitted again via at least one of the two surfaces perpendicular to the edges, the light exit surface.
- Light exit surface here indicates an area of the
- Light guide which is suitable to emit light.
- the light introduction surface is in turn able to receive light into the light guide plate, so that the light-conducting layer can distribute the introduced light over the entire light exit surface.
- the impurities lead to a decoupling of the light, so that light over the entire
- the printing (2) is preferably a
- Dot matrix or a line pattern When used as a component of the light guide plate, this dot matrix serves to generate impurities, in particular it serves to deflect or scatter the light. Through an optimized Pressure can provide a uniform illumination of the
- a film is understood to mean a shape that is flexible enough for it to be rolled up under normal conditions.
- a plate is understood to mean a form which can not be rolled up under normal conditions. Plates in the sense of this writing are usually so thick that they are in the attempt of the
- the films preferably consist of poly (meth) acrylate.
- poly (meth) acrylate is understood as meaning homopolymers or copolymers of methacrylates and / or acrylates.
- the constituents of the printing which perform the function of a light-scattering printing pattern, are freely selectable according to the invention and limited solely by the respective printing method.
- a second important aspect of the present invention is the method for producing light guide plates having a thickness between 1 mm and 20 mm, preferably between 2 mm and 10 mm, preferably between 4 mm and 8 mm.
- the method according to the invention is significantly more time and cost-efficient to carry out and additionally leads to protection for the printing. This is achieved by first printing the optical defects (2) on a film (5). Then the film (5) is laminated with the printing pattern in the manner of the entire surface of the plate that the optical defects (2) between the plate and the film
- Manufacturing process first applied to the film.
- the flexibility with regard to the printing method to be used is significantly higher.
- the printing in the form of a
- Mass printing method such as the roll gravure applied to a suitable film (5). This printed film is then laminated inline onto the photoconductive substrate during the manufacturing process of the photoconductive substrate (FIG. 3).
- Glass temperature can be well connected to the film.
- the print (2) is between the plate (1) and the film (5).
- the laminate is on another, optionally also cooled roller (D)
- the cooled laminate of plate, printing and film can be cut after cooling and further refined.
- the edges can be polished.
- the edge surfaces, which are not provided with a light source, according to the prior art can be additionally provided reflective. This equipment can be done for example by reflective tapes. Furthermore, a reflective lacquer can be applied to these edge surfaces.
- the edges of the prior art are equipped with one or more lighting units. The light sources can be used for better irradiation of the
- Devices according to the invention for transporting light are preferably used as backlighting in LCD screens
- the ink used was a white, acrylate binder-based ink.
- the printed film of PMMA with a width of 1400 mm and a length of 1000 m was fed to a 4-roll calender and with the extrudate in the calender in the third
- Adhesion between the plate and the unprinted area of the film and the adhesion between the plate and the printed area of the film are determined. Both the connection plate and unprinted area of the film as well as the connection plate and
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Nonlinear Science (AREA)
- Mechanical Engineering (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Planar Illumination Modules (AREA)
- Laminated Bodies (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012518058A JP2012531720A (ja) | 2009-06-29 | 2010-05-25 | 埋設された障害箇所を備える導光板及び該導光板を製造する方法 |
BRPI1011914A BRPI1011914A2 (pt) | 2009-06-29 | 2010-05-25 | placa guia de luz com impurezas embutidas e método para a produção das mesmas. |
US13/319,479 US9201186B2 (en) | 2009-06-29 | 2010-05-25 | Light guide plate having embedded impurities and method for the production thereof |
EP10723083A EP2449413A1 (de) | 2009-06-29 | 2010-05-25 | Lichtleiterplatte mit eingebetteten störstellen und verfahren zu dessen herstellung |
CN201080027040.5A CN102460245B (zh) | 2009-06-29 | 2010-05-25 | 具有嵌入的杂质区的导光板及其制备方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009027288A DE102009027288A1 (de) | 2009-06-29 | 2009-06-29 | Lichtleitplatte mit eingebetteten lichtstreuenden Störstellen und Verfahren zu dessen Herstellung |
DE102009027288.7 | 2009-06-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011000636A1 true WO2011000636A1 (de) | 2011-01-06 |
Family
ID=42628601
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2010/057108 WO2011000636A1 (de) | 2009-06-29 | 2010-05-25 | Lichtleiterplatte mit eingebetteten störstellen und verfahren zu dessen herstellung |
Country Status (9)
Country | Link |
---|---|
US (1) | US9201186B2 (de) |
EP (1) | EP2449413A1 (de) |
JP (1) | JP2012531720A (de) |
KR (1) | KR20120102496A (de) |
CN (1) | CN102460245B (de) |
BR (1) | BRPI1011914A2 (de) |
DE (1) | DE102009027288A1 (de) |
TW (1) | TW201116776A (de) |
WO (1) | WO2011000636A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019145269A1 (en) | 2018-01-24 | 2019-08-01 | Evonik Röhm Gmbh | Light emitting element |
DE102022128196A1 (de) | 2022-10-25 | 2024-04-25 | Heinz Fritz GmbH | Verfahren zum Übertragen eines Musters auf einen Körper, Körper und Gießanordnung |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010062900A1 (de) | 2010-12-13 | 2012-06-14 | Evonik Röhm Gmbh | Verfahren zur Herstellung von Lichtleitkörpern und deren Verwendung in Beleuchtungseinheit |
EP3025092B1 (de) | 2013-07-22 | 2017-05-17 | Evonik Röhm GmbH | Lichtleitplatte und verfahren zu deren herstellung |
US9869169B2 (en) | 2013-12-12 | 2018-01-16 | Husky Oil Operations Limited | Method to maintain reservoir pressure during hydrocarbon recovery operations using electrical heating means with or without injection of non-condensable gases |
JP6459110B2 (ja) * | 2014-03-13 | 2019-01-30 | パナソニックIpマネジメント株式会社 | 導光部材の製造方法 |
EP3002508A1 (de) | 2014-09-30 | 2016-04-06 | Evonik Röhm GmbH | Lichtverbundsystem für die Verwendung in ultradünnen Leuchten und Back Light Units |
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US6104455A (en) * | 1997-08-27 | 2000-08-15 | Dai Nippon Printing Co., Ltd. | Back light device and liquid crystal display apparatus |
US20010030861A1 (en) * | 1996-02-01 | 2001-10-18 | Mitsubishi Rayon Co., Ltd. | Surface light source device, and liquid crystal display device, sign display apparatus and traffic sign display apparatus using the surface light source device |
EP2023039A1 (de) * | 2007-08-08 | 2009-02-11 | Rohm and Haas Denmark Finance A/S | Dünnlichtleiterplatte und Herstellungsverfahren dafür |
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JPH06195757A (ja) * | 1992-12-21 | 1994-07-15 | Toppan Printing Co Ltd | 光学式記録媒体の製造方法 |
JPH06309911A (ja) | 1993-04-19 | 1994-11-04 | Meitaku Syst:Kk | エッジライトパネル及びその製造方法 |
DE9318362U1 (de) | 1993-12-01 | 1994-02-03 | Roehm Gmbh | Gleichmäßig ausgeleuchtete Lichtleiterplatten |
TW464784B (en) * | 1996-12-06 | 2001-11-21 | Alps Electric Co Ltd | Liquid crystal display device |
FR2782829B1 (fr) | 1998-08-26 | 2000-11-10 | Editions Publicite Excelsior | Panneaux d'affichage lumineux |
IT1307920B1 (it) | 1999-01-22 | 2001-11-29 | Atochem Elf Sa | Compositi diffondenti la luce. |
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TWI295388B (de) * | 2001-03-28 | 2008-04-01 | Au Optronics Corp | |
DE10156068A1 (de) | 2001-11-16 | 2003-05-28 | Roehm Gmbh | Lichtleitkörper sowie Verfahren zu dessen Herstellung |
DE10222250A1 (de) | 2002-05-16 | 2003-11-27 | Roehm Gmbh | Verbesserte Lichtleitkörper sowie Verfahren zu dessen Herstellung |
TWI255370B (en) * | 2003-02-27 | 2006-05-21 | Hon Hai Prec Ind Co Ltd | Light guide plate used for liquid crystal display |
CN100419530C (zh) * | 2003-10-11 | 2008-09-17 | 鸿富锦精密工业(深圳)有限公司 | 面光源装置及液晶显示器 |
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DE102010062900A1 (de) | 2010-12-13 | 2012-06-14 | Evonik Röhm Gmbh | Verfahren zur Herstellung von Lichtleitkörpern und deren Verwendung in Beleuchtungseinheit |
-
2009
- 2009-06-29 DE DE102009027288A patent/DE102009027288A1/de not_active Withdrawn
-
2010
- 2010-05-25 US US13/319,479 patent/US9201186B2/en not_active Expired - Fee Related
- 2010-05-25 WO PCT/EP2010/057108 patent/WO2011000636A1/de active Application Filing
- 2010-05-25 BR BRPI1011914A patent/BRPI1011914A2/pt not_active IP Right Cessation
- 2010-05-25 EP EP10723083A patent/EP2449413A1/de not_active Withdrawn
- 2010-05-25 JP JP2012518058A patent/JP2012531720A/ja active Pending
- 2010-05-25 KR KR1020117031325A patent/KR20120102496A/ko not_active Application Discontinuation
- 2010-05-25 CN CN201080027040.5A patent/CN102460245B/zh not_active Expired - Fee Related
- 2010-06-24 TW TW099120638A patent/TW201116776A/zh unknown
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US20010030861A1 (en) * | 1996-02-01 | 2001-10-18 | Mitsubishi Rayon Co., Ltd. | Surface light source device, and liquid crystal display device, sign display apparatus and traffic sign display apparatus using the surface light source device |
US6104455A (en) * | 1997-08-27 | 2000-08-15 | Dai Nippon Printing Co., Ltd. | Back light device and liquid crystal display apparatus |
EP2023039A1 (de) * | 2007-08-08 | 2009-02-11 | Rohm and Haas Denmark Finance A/S | Dünnlichtleiterplatte und Herstellungsverfahren dafür |
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Title |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019145269A1 (en) | 2018-01-24 | 2019-08-01 | Evonik Röhm Gmbh | Light emitting element |
DE102022128196A1 (de) | 2022-10-25 | 2024-04-25 | Heinz Fritz GmbH | Verfahren zum Übertragen eines Musters auf einen Körper, Körper und Gießanordnung |
EP4360848A1 (de) | 2022-10-25 | 2024-05-01 | Heinz Fritz GmbH | Verfahren zum aufprägen eines musters auf einen körper, körper und giessanordnung |
Also Published As
Publication number | Publication date |
---|---|
US9201186B2 (en) | 2015-12-01 |
US20120067512A1 (en) | 2012-03-22 |
JP2012531720A (ja) | 2012-12-10 |
KR20120102496A (ko) | 2012-09-18 |
DE102009027288A1 (de) | 2010-12-30 |
EP2449413A1 (de) | 2012-05-09 |
CN102460245A (zh) | 2012-05-16 |
BRPI1011914A2 (pt) | 2016-04-19 |
CN102460245B (zh) | 2016-05-25 |
TW201116776A (en) | 2011-05-16 |
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