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WO2004001705A1 - Afficheur a guide de lumiere en panneau plat et procede de fabrication - Google Patents

Afficheur a guide de lumiere en panneau plat et procede de fabrication Download PDF

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Publication number
WO2004001705A1
WO2004001705A1 PCT/CN2003/000464 CN0300464W WO2004001705A1 WO 2004001705 A1 WO2004001705 A1 WO 2004001705A1 CN 0300464 W CN0300464 W CN 0300464W WO 2004001705 A1 WO2004001705 A1 WO 2004001705A1
Authority
WO
WIPO (PCT)
Prior art keywords
light guide
guide plate
light
led
optical
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.)
Ceased
Application number
PCT/CN2003/000464
Other languages
English (en)
Chinese (zh)
Inventor
Jinggui Lu
Jian Lu
Qiang Wu
Xuemei Lu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from CNB021237611A external-priority patent/CN1182501C/zh
Priority claimed from CNB021237603A external-priority patent/CN1169100C/zh
Priority claimed from CNB02123762XA external-priority patent/CN1165880C/zh
Application filed by Individual filed Critical Individual
Priority to AU2003242217A priority Critical patent/AU2003242217A1/en
Publication of WO2004001705A1 publication Critical patent/WO2004001705A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/20—Illuminated signs; Luminous advertising with luminescent surfaces or parts

Definitions

  • the present invention relates to a flat panel display device using a light emitting diode as a light source and a manufacturing method thereof.
  • LED materials such as ultra-high-brightness green, blue, and red light have made major breakthroughs and rapid development at home and abroad, and have been called new photoelectron light sources by domestic and foreign experts.
  • Single crystal LED light-emitting chips are usually 0.2 X 0.2-0.3 X 0.3 mm 2 , which are very small point light sources.
  • external packaging to change the light intensity distribution, such as lens packaging and matrix injection molding modules made of plastic injection molded frames.
  • the display icon of the above display module and the operating point of the LED chip basically correspond to each other. It is difficult to change from a point light source to a surface light source, which affects the development of the LED to a flat and thin shape.
  • Another type of flat panel display product uses a fluorescent lamp display board. The icon groove processed by the display board makes the illumination light source reflect an indistinct contrast display, or the text is pasted into a non-luminous color film and the contour is carved The rough lines appear on the rough surface to show the scattered light outline of the light source.
  • the above flat panel display products all have the disadvantages of high power consumption of fluorescent lamps, low lifespan, and low light output efficiency for displaying icons.
  • the present invention is an organic combination of geometrical optics principles of optical materials and semiconductor light-emitting devices, which enables high-performance LEDs to be successfully converted from point light sources to high-efficiency thin surface light source displays.
  • the flat panel light guide display of the present invention utilizes the principle that light is transmitted from one medium to another. At the interface, the principle of refraction or reflection will occur due to different angles of incidence.
  • the light guide plate composed of a single optical material or a composite optical material, A group of cylindrical lens top cavities are made on one or more sides, and the LED light emitting tubes that are oriented in parallel with the two sides of the light guide plate are packaged in the cavity.
  • the LED light emitting tube is not provided around the light guide plate, and a metal reflective film is provided.
  • the light guide plate may be a single material layer of organic polymethyl methacrylate (PmmA), polycarbonate (PC), or the substrate may be polymethyl methacrylate (PmmA)
  • the surface is made of polycarbonate (PC) or coated with a silicone abrasion-resistant thin layer, and the inorganic optical sheet glass and the organic substrate can also be compounded on the surface.
  • an epoxy-type optical resin glue is injected between a light guide substrate and a prefabricated cylindrical cavity of a lens and an LED.
  • a flat light guide display wherein the light guide plate corresponds to different LED edge light sources and has different matching thicknesses.
  • the LED component light sources are ⁇ 2, ⁇ 3, and ⁇ 5, respectively, 3mm, 5mm, and 6-8mm are selected. Or light guide plate with a thickness of 8mm or more.
  • a flat light guide display the device is composed of a light guide plate and a double-sided metal encapsulation shell.
  • the two sides of the light guide plate are rough astigmatism layer or rough astigmatism icon.
  • the light guide plate is packaged on the front and back sides.
  • an icon window is embossed on the front cover and the back cover of the double-sided metal encapsulation shell, and the icon-shaped window and the rough scattered light emitting layer on the light guide plate may be single-sided or double-sided.
  • the windows of the front and rear panels are filled with a sealing layer of an optical resin material by hot extrusion or filled with a transparent protective film on the surface of the front cover and the back cover of the double-sided metal encapsulation shell.
  • the light guide plate is formed by a plurality of shapes corresponding to the fixing grooves of the fixing frame, and is respectively fixed in the fixing grooves of the fixing frame, arranged in an arrangement; the periphery of each light guide plate A plurality of cylindrical lens top concave holes are prefabricated on the upper and lower sides or on one side, and an LED light-emitting tube is built in.
  • the front surface of the light guide plate is a rough astigmatism layer, and the astigmatism layer is covered with a metal sheet window cover or reflective light for displaying icons Window film, the window cover or window film is also placed in the fixing groove of the fixing frame, and its surface is flush with the slot of the fixing frame; the window cover or window film is provided with an icon-shaped window, The window part is sealed by thermal extrusion or transparent film of the optical resin material; the surface of the window cover or reflective window film and the fixing frame is covered with a light-transmitting protective film, and the back of the fixing frame is inserted into the Attach a rear cover.
  • a method for preparing a flat-panel display a light guide plate composed of a single organic material polymethylmethacrylate PmmA or polycarbonate PC, or a composite layer structure of the two materials; the light guide plate meets the requirements of optical mirror surface It is made in a mold; the icon-shaped dotted line interlaced rough astigmatism surface is made on the surface layer of the light guide plate; the icon-shaped rough astigmatism surface is coated with the luminous paint prepared according to the following method; the preparation of the luminous paint Step: Mix the medium temperature curing agent and the low molecular weight optical epoxy resin which is liquid at room temperature according to the equivalent value of epoxy value and amine value.
  • colorless optical glass particles or pure quartz particles in the luminescent coating account for 30% -70% of the weight of the mixture, and the balance is a low molecular weight optical epoxy resin with a medium temperature curing agent;
  • An epoxy-type optical resin glue is injected into the preformed cylindrical cavity of the lens, and the LED chip and the current limiting resistor are assembled therein, ensuring that the LED chip is directed parallel to both sides of the light guide plate, and the temperature is 50 ° C-70 ° C. 3 hours curing; Soldering to connect the above LED components; Bare component connection wires are coated with insulation cold-dry paint; the LED components are aged for 8 hours at the specified current, and the preparation is completed.
  • optical glass particles are preferably as follows: heavy crown glass ZK501, ZK506, ZK509 in crown glass; F503, F504, F506c selected from fire glass
  • the method for manufacturing a flat panel light guide display as described above has a low molecular weight epoxy resin molecular weight range: 300-400, and an epoxy value range: E0.38-E0.54.
  • the LED light output of the flat panel light guide display of the present invention has high directivity, so that most of its light emission meets the surface of the light guide plate, so that the incident surface is larger than the critical angle of total reflection, thereby generating air specular reflection and improving light guide efficiency;
  • the luminous paint is combined with the light guide plate through resin to produce a highly efficient scattered light luminous paint, with high luminous output efficiency, high luminous brightness, and clear and clear display performance;
  • the display icon of the present invention can uniformly and brightly emit light over a large area; the present invention can be appropriately selected Formulated into monochrome, multi-color and LED light guide displays.
  • FIG. 1 is a cross-sectional view of a flat panel light guide display according to the present invention.
  • FIG. 2 is a schematic diagram of a front structure of a flat panel light guide display according to the present invention.
  • 3 is a light transmission distribution diagram of the LED chip of the flat panel light guide display in the light guide plate after passing through the lens;
  • FIG. 4 is a sectional plan view of a plan view of a second embodiment of a flat panel light guide display according to the present invention.
  • FIGS. 5 and 6 are front and side sectional views of FIG. 4;
  • FIG. 7 is a front view of a third embodiment of the flat panel light guide display according to the present invention.
  • FIGS. 8 and 9 are a side sectional view and a bottom sectional view of FIG. 7;
  • FIG. 10 is a front view of the back cover structure of FIG. 7;
  • FIG. 11 is a front view of the structure of the sheet metal window cover or reflective window film of FIG. 7.
  • Luminous display astigmatism and luminous coating 3.
  • Transparent light guide substrate 4.
  • Front cover window and packaging material 16. Rough light diffusion layer on the front side of the light guide plate
  • Transparent protective film made of nylon material 18.
  • Metal sheet window cover or reflective window film made of nylon material 18.
  • the surface of the substrate mold requires an optical mirror surface
  • the astigmatism part of the icon is the point and line staggered astigmatism surface produced by the surface layer of the light guide plate through a molding process; 3.
  • Abrasion-resistant coating can be prepared on the surface of the light guide plate such as PmmA material, that is, sprayed silicone resin.
  • the light guide plate can also be made of PmmA substrate and PC material on the surface.
  • the LED is composed of three primary colors of red, blue and green mixed on a light guide plate.
  • the light guide plate light-emitting coating can be selected without pigment.
  • the control of various light-emitting colors of the light-emitting display is completed by the driving circuit through the gating combination of the LEDs of each color.
  • Liquid low-molecular-weight optical epoxy resin at room temperature such as: 634 # (international brand EPon834), E42 model with epoxy value 0.38-0.45; domestic 6101 # (international brand ⁇ 839), epoxy value 0.41-0.47 E44 model; domestic brand 618 # (international brand Epon828) E51 model with epoxy value of 0.48-0.54, and medium temperature curing agent (such as: 593 #, xylylenediamine produced by Shanghai Resin Factory), press the ring The oxygen value and the amine value are mixed in an equivalent ratio.
  • the LED devices and current-limiting resistors are tested in advance to meet the specifications
  • the light guide substrate is prefabricated with a cylindrical cavity on the top of the lens and injected with epoxy-type optical resin glue to ensure the optical coupling and matching between the LED chip and the light guide plate and the high efficiency transmission effect of the light guide plate; 4. Assemble LED and current limiting resistor;
  • the surface of the bare component connection line is coated with insulation cold-dry paint
  • the finished product is qualified and put into storage.
  • the colorless optical glass particles (50 ⁇ ) are mixed with a low molecular weight optical epoxy resin (E44) with a medium temperature curing agent.
  • the colorless optical glass particles account for 30% of the weight of the composition, and the balance is the medium temperature. Curing agent of low molecular weight optical epoxy resin.
  • the colorless optical glass particles (20 ⁇ m) are mixed with a low molecular weight optical epoxy resin (E42) with a medium temperature curing agent.
  • the colorless optical glass particles make up 50% of the weight of the composition, and the balance is medium temperature. Curing agent of low molecular weight optical epoxy resin.
  • the colorless optical glass particles (100 ⁇ ) are mixed with a low-molecular-weight optical epoxy resin (E51) added with a medium-temperature curing agent.
  • the colorless optical glass particles account for 70% of the weight of the composition, and the balance is added with intermediate temperature.
  • Curing agent of low molecular weight optical epoxy resin
  • the thickness of the light guide plate matches the size of the LED: ⁇ 3 LED with 5mm thickness light guide plate, ⁇ 5 LED with 6-8mm thick light guide plate, ⁇ 2 LED with 3mm Thick light guide.
  • the light guide plate can be a single material layer of organic material polymethyl methacrylate (PmmA) or polycarbonate (PC), or the substrate can be
  • the surface is PC or coated with silicone wear-resistant thin layer, and inorganic optical sheet glass can also be coated Glass and organic substrate are compounded on the surface.
  • the top concave holes of the cylindrical lens are prefabricated on both sides, and the light-emitting diode is embedded therein, and an epoxy-type optical resin glue is injected to ensure the optical coupling between the LED chip and the light guide plate and the efficient transmission of the optical plate.
  • a light-emitting tube can be coated with a reflective film on the opposite side. On one or both sides of the light guide plate, rough diffusing layers 12, 16 are injected through a mold.
  • a metal envelope is made according to the size of the light guide plate.
  • the metal envelope is composed of a front cover and a back cover, and they are tightly fitted in a plug-in form to play a role of packaging the light guide plate. Icon-shaped windows are cut on the front cover and back cover by die stamping or plasma numerical control, and the windows can be sealed by hot extrusion or filling with high tenacity white or color film nylon or high density polyvinyl chloride.
  • the metal envelope can be made of thin metal plates such as aluminum, iron, and steel.
  • the rear cover can be 0.4-0.6 mm smaller than the front cover, which is convenient for matching and assembly.
  • the outer surface of the metal envelope can be sprayed with a layer of paint.
  • the device can be made into a thickness of 0.6-1.0 cm, which can be directly mounted on the wall without destroying the building structure. It can display illuminated display cards on one or both sides, and is especially suitable for hanging in the air.
  • the light guide plate can be a single organic PmmA or PC material, or the substrate is PmmA, the surface is PC or coated with a silicone wear-resistant thin layer, and the inorganic optical sheet glass and The organic substrate is compounded on the surface.
  • the top concave holes of the cylindrical lens are prefabricated on both sides, and the light-emitting diodes are embedded therein, and epoxy-type optical resin glue is injected. If the LED light emitting tube is provided on one side, a reflective film can be applied on the opposite side.
  • a rough light diffusion layer 20 is injected through a film, and the rough light diffusion layer 20 can be formed into a prism-shaped unevenness by staggered lines.
  • the fixed frame is made into a set of grooves corresponding to the shape of the light guide plate, and the prefabricated light guide plate unit parts are placed in the corresponding grooves respectively, and the LED component leads are connected and led out of the frame.
  • a rear cover is placed in the fixing frame clamping slot on the rear side of the light guide plate, and its connection surface is sealed with glue.
  • the above-mentioned frame 22 and the light guide plate combined product are combined with a 0.5-1.0 mm thick metal sheet cover or reflective film 18 with an icon window to form a required vehicle number plate or other display plate.
  • the light guide plate is placed in the groove of the fixed frame, and its rough astigmatism surface 20 is slightly at the mouth of the groove. After the metal sheet or the reflective film 18 is pasted, the light guide plate is flush with the mouth of the groove. Paste metal sheets or reflective films 18 that represent different icons to assemble different number plates. After the above process is completed, a light-transmitting protective layer can be adhered to the outermost layer.
  • the fixing frame 22 may be made of ABS plastic through injection molding, or may be made of a metal material.
  • the rear cover 21 may be injection-molded from ABS plastic, or may be punched from a 1.0-1.2mm aluminum plate.
  • a stiffener structure may be provided on the rear cover, as shown in FIG. 10.
  • the metal sheet window plate can be used without Rust steel is 0.5mm thick or aluminum is 1.0mm thick, made by die stamping.
  • the protective light-transmitting layer 17 may be a nylon film or a high-density polyvinyl chloride film.
  • the LED component light source matches the light guide substrate: ⁇ 3 LED with 5mm thickness light guide plate, ⁇ 5 LED with 6-8mm thickness light guide plate, ⁇ 2 LED with 3mm thickness light guide plate, LED large size 12 ⁇ , in the chip Lead ball welding.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Planar Illumination Modules (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)

Abstract

La présente invention concerne un afficheur à guide de lumière en panneau plat et le procédé de fabrication correspondant. Cet afficheur en panneau plat comporte une feuille guide de lumière, un groupe de cavités autour de la feuille guide de lumière, dans lesquelles sont disposées des diodes électroluminescentes, des diodes électroluminescentes, une couche superficielle astigmatique appliquée sur la face de la feuille guide de lumière et elle-même revêtue d'une peinture luminescente. La présente invention convient à la fabrication d'afficheurs à guides de lumière monochromes, d'afficheurs à guides de lumière polychrome, ou d'afficheurs à guides de lumière à diodes électroluminescentes.
PCT/CN2003/000464 2002-06-24 2003-06-16 Afficheur a guide de lumiere en panneau plat et procede de fabrication Ceased WO2004001705A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003242217A AU2003242217A1 (en) 2002-06-24 2003-06-16 Flat plate light guide display and manufacturing method for the same

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
CNB021237611A CN1182501C (zh) 2002-06-24 2002-06-24 全彩色平板光导显示器的制备方法
CN02123762.X 2002-06-24
CNB021237603A CN1169100C (zh) 2002-06-24 2002-06-24 组件组合集成型led光导显示器
CN02123760.3 2002-06-24
CNB02123762XA CN1165880C (zh) 2002-06-24 2002-06-24 金属包封组合集成型led显示器
CN02123761.1 2002-06-24

Publications (1)

Publication Number Publication Date
WO2004001705A1 true WO2004001705A1 (fr) 2003-12-31

Family

ID=30003413

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2003/000464 Ceased WO2004001705A1 (fr) 2002-06-24 2003-06-16 Afficheur a guide de lumiere en panneau plat et procede de fabrication

Country Status (2)

Country Link
AU (1) AU2003242217A1 (fr)
WO (1) WO2004001705A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007029551A1 (fr) * 2005-09-08 2007-03-15 Konica Minolta Holdings, Inc. Transistor à film mince organique, corps de base pour transistor à film mince organique et procédé de fabrication du transistor à film mince organique
US7482623B2 (en) 2004-03-22 2009-01-27 Seiko Epson Corporation Organic semiconductor film and organic semiconductor device
WO2009004597A3 (fr) * 2007-07-05 2009-09-24 Udayan Kanade Source de lumière linéaire multicolore
US11999290B2 (en) 2020-09-11 2024-06-04 Shanghai Yanfeng Jinqiao Automotive Trim Systems Co. Ltd. Component for vehicle interior

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4603496A (en) * 1985-02-04 1986-08-05 Adaptive Micro Systems, Inc. Electronic display with lens matrix
JPH09152840A (ja) * 1995-11-29 1997-06-10 Sanesu:Kk サイン・記号・絵等の表示部の照明装置
CN2399794Y (zh) * 1999-11-12 2000-10-04 李志煌 发光二极管投射式亮光看板
US6249375B1 (en) * 1998-01-19 2001-06-19 Swarco Futurit Verkehrssignal Systeme Ges M.B.H. Optical element for traffic signs, display panels or the like
CN2490671Y (zh) * 2001-07-13 2002-05-08 王浩垒 电子发光广告牌

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4603496A (en) * 1985-02-04 1986-08-05 Adaptive Micro Systems, Inc. Electronic display with lens matrix
JPH09152840A (ja) * 1995-11-29 1997-06-10 Sanesu:Kk サイン・記号・絵等の表示部の照明装置
US6249375B1 (en) * 1998-01-19 2001-06-19 Swarco Futurit Verkehrssignal Systeme Ges M.B.H. Optical element for traffic signs, display panels or the like
CN2399794Y (zh) * 1999-11-12 2000-10-04 李志煌 发光二极管投射式亮光看板
CN2490671Y (zh) * 2001-07-13 2002-05-08 王浩垒 电子发光广告牌

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7482623B2 (en) 2004-03-22 2009-01-27 Seiko Epson Corporation Organic semiconductor film and organic semiconductor device
WO2007029551A1 (fr) * 2005-09-08 2007-03-15 Konica Minolta Holdings, Inc. Transistor à film mince organique, corps de base pour transistor à film mince organique et procédé de fabrication du transistor à film mince organique
WO2009004597A3 (fr) * 2007-07-05 2009-09-24 Udayan Kanade Source de lumière linéaire multicolore
US8333494B2 (en) 2007-07-05 2012-12-18 I2Ic Corporation Multicolored linear light source
US11999290B2 (en) 2020-09-11 2024-06-04 Shanghai Yanfeng Jinqiao Automotive Trim Systems Co. Ltd. Component for vehicle interior

Also Published As

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