CN104122618A - Composite light guide plate and manufacturing method thereof - Google Patents
Composite light guide plate and manufacturing method thereof Download PDFInfo
- Publication number
- CN104122618A CN104122618A CN201310155036.2A CN201310155036A CN104122618A CN 104122618 A CN104122618 A CN 104122618A CN 201310155036 A CN201310155036 A CN 201310155036A CN 104122618 A CN104122618 A CN 104122618A
- Authority
- CN
- China
- Prior art keywords
- photic zone
- microstructure
- tabula rasa
- extrusion
- base 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.)
- Pending
Links
Landscapes
- Laminated Bodies (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
A composite light guide plate comprises a matrix layer, a first euphotic layer and a second euphotic layer, wherein the first euphotic layer and the second euphotic layer form on two opposite sides of the matrix layer. The first euphotic layer and the second euphotic layer are made of polystyrene. The matrix layer is made of polycarbonate, wherein polymethyl methacrylate micron particles are uniformly dispersed on the polycarbonate. The polymethyl methacrylate micron particles are served as diffusion particles. The invention also provides a manufacturing method of the composite light guide plate.
Description
Technical field
The present invention relates to a kind of composite guide tabula rasa and preparation method thereof.
Background technology
Along with the slimming trend of panel of LCD, the light guide plate in backlight module also reduces gradually.But in the time that the thickness of light guide plate and the length-width-ratio example of light guide plate are dwindled, light guide plate ejection forming technique will face great challenge.Main cause is that to be limited to the die cavity degree of depth of mould too small, relatively large-area size will cause the difficult ejaculation of plastics filling to complete, and crossing thin finished product thickness also will make cooling velocity accelerate, cannot suitably use pressure holding function, microstructure is difficult to be transferred to completely light guide plate surface especially simultaneously, therefore, be difficult for utilizing injection molding parameter to adjust to obtain large-sized light guide plate.
Make for above-mentioned reasons large scale TV machine light guide plate batch production technique, all adopt in plastic extrusion (Extrusion) mode as main.One side surface of light guide plate is provided with the microstructure for spreading, and opposite side surface is conventionally provided with prism microstructure and uses a slice prismatic lens to save.But, if the one side of light guide plate needs to be set as prism microstructure, just the light of light guide plate outgoing cannot pass through atomization processing in advance, in the time that light source leaves prism, easily cause bright blanking bar.
Summary of the invention
In view of this, be necessary to provide a kind of composite guide tabula rasa and method for making, to address the above problem.
A kind of composite guide tabula rasa, comprise base layer and be formed at the first photic zone and second photic zone of the relative both sides of base layer, described the first photic zone and the second photic zone adopt polystyrene to make, described base layer adopts the dispersed polycarbonate that has polymethylmethacrylate micro particles to make, and described polymethylmethacrylate micro particles is as diffusion particle.
A kind of method for making of composite guide tabula rasa, comprise step: adopt co-extrusion signature die head to extrude and comprise the first photic zone, base layer and the second euphotic three laminar substrates, described base layer is sandwiched between described the first photic zone and the second photic zone, described the first photic zone and the second photic zone adopt polystyrene to make, and described base layer adopts the dispersed polycarbonate that has polymethylmethacrylate micro particles to make; And form diffusion microstructure and prism microstructure in two surface rollings of described three laminar substrates.
In the technical program, form respectively and be diffused as structure and prism microstructure in the both side surface of composite guide tabula rasa, thereby ensure that composite guide tabula rasa can play diffusing light and the axially effect of light harvesting, and adopt the dispersed polycarbonate (PC) that has polymethylmethacrylate (PMMA) micro particles to make base layer, described composite guide tabula rasa can play again the effect of atomization light.In the technical program, because polymethylmethacrylate water absorptivity is high, polymethylmethacrylate is directly outside exposed as light guide panel material, easily because water suction causes distortion.And the water absorptivity of polystyrene is poor, be formed on polystyrene as photic zone and include polymethyl acrylate and make base layer both sides, can prevent that the composite guide tabula rasa forming is because water suction produces deformation.
Brief description of the drawings
The diagrammatic cross-section of the composite guide tabula rasa that Fig. 1 provides for the technical program.
The schematic diagram of the composite guide tabula rasa manufacturing process that Fig. 2 provides for the technical program.
Main element symbol description
| Composite guide tabula rasa | 100 |
| Base layer | 110 |
| Polymethylmethacrylate micro particles | 111 |
| Exiting surface | 101 |
| Bottom surface | 102 |
| The first photic zone | 120 |
| The second photic zone | 130 |
| Prism microstructure | 103 |
| Diffusion microstructure | 104 |
| Three laminar substrates | 10 |
| Co-extrusion is given as security die head | 20 |
| The first hopper | 31 |
| The second hopper | 32 |
| The first screw rod | 41 |
| The second screw rod | 42 |
| Feed pipe | 43 |
| The first figure roller | 51 |
| Second graph roller | 52 |
| The first microstructure graph | 511 |
| The second microstructure graph | 521 |
| Smooth roller | 53 |
Following embodiment further illustrates the present invention in connection with above-mentioned accompanying drawing.
Embodiment
Below in conjunction with accompanying drawing, the method for making of composite guide tabula rasa provided by the invention and described composite guide tabula rasa is further described in detail.
Refer to Fig. 1, the composite guide tabula rasa 100 that the technical program embodiment provides comprises base layer 110 and is formed at the first photic zone 120 and second photic zone 130 of base layer 110 relative both sides.
Described base layer 110 is located between the first photic zone 120 and the second photic zone 130, and described the first photic zone 120 and the second photic zone 130 adopt polystyrene (PS) to make.Base layer 110 adopts the dispersed polycarbonate (PC) that has polymethylmethacrylate (PMMA) micro particles 111 to make.The particle diameter of described polymethylmethacrylate micro particles 111 is 0.5 micron to 50 microns.Polymethylmethacrylate micro particles is as diffusion particle, so that light is carried out to multi-angle diffusion.Be understandable that, also can adopt other micro particles as diffusion particle, as silicon dioxide etc.
Described composite guide tabula rasa 100 is roughly tabular, and it has relative exiting surface 101 and bottom surface 102.Described exiting surface 101 is the surface away from base layer 110 of the first photic zone 120, and described bottom surface 102 is the surface of the second photic zone 130 away from base layer 110.Be formed with prism microstructure 103 in exiting surface 101 1 sides, be formed with diffusion microstructure 104 in bottom surface 102 1 sides.In the present embodiment, prism microstructure 103 is the tapered protrusion of the setting of multiple spaces and array arrangement, and diffusion microstructure 104 is the hemispherical groove of the setting of multiple intervals and array arrangement.Be understandable that, the shape of prism microstructure 103 and diffusion microstructure 104 can be set according to actual needs.
In the technical program, form respectively and be diffused as structure and prism microstructure in the both side surface of composite guide tabula rasa, thereby ensure that composite guide tabula rasa can play diffusing light and the axially effect of light harvesting, and adopt the dispersed polycarbonate (PC) that has polymethylmethacrylate (PMMA) micro particles to make base layer, described composite guide tabula rasa can play again the effect of atomization light.
In the technical program, because polymethylmethacrylate water absorptivity is high, polymethylmethacrylate is directly outside exposed as light guide panel material, easily because water suction causes distortion.And the water absorptivity of polystyrene is poor, be formed on polystyrene as photic zone and include polymethyl acrylate and make base layer both sides, can prevent that the composite guide tabula rasa forming is because water suction produces deformation.
See also Fig. 2, the technical program also provides a kind of method for making of described composite guide tabula rasa 100, comprises step:
The first step, adopts co-extrusion to give as security die head 20(Stacked Type Die) extrude three laminar substrates 10 that comprise the first photic zone 120, base layer 110 and the second photic zone 130.
Particularly, the co-extrusion adopting in the present embodiment is given as security die head and is given as security die head for piling up formula side direction charging co-extrusion.Described co-extrusion is given as security die head 20 and is interconnected with the first hopper 31 and the second hopper 32 respectively.The in-built material polystyrene that is useful on moulding the first photic zone 120 and the second photic zone 130 of described the first hopper 31.The in-built dispersed polycarbonate that has polymethylmethacrylate micro particles that is useful on moulding base layer 110 of described the second hopper 32.Described the first hopper 31 and co-extrusion are given as security between die head 20 and are provided with the first screw rod 41, and described the first screw rod 41, for heating being about to enter the polystyrene that co-extrusion gives as security die head 20, makes its thawing to squeeze signature.Described the first screw rod 41 injects co-extrusion by two feed pipes 43 by polystyrene material and gives as security die head 20, to form respectively the first photic zone 120 and the second photic zone 130.Described the second hopper 32 and co-extrusion are given as security between die head 20 and are provided with the second screw rod 42, described the second screw rod 42 heats for the dispersed polycarbonate that has polymethylmethacrylate micro particles of giving as security die head 20 to being about to enter co-extrusion, polycarbonate is melted to squeeze signature, and polymethylmethacrylate remain solid particle state.
After giving as security die head 20 and extrude by co-extrusion, obtain comprising three laminar substrates 10 of the first photic zone 120, base layer 110 and the second photic zone 130.
Second step, forms diffusion microstructure 104 and prism microstructure 103 in two surface rollings of described three laminar substrates 10.
In the present embodiment, adopt the first figure roller 51 and second graph roller 52 to carry out roll extrusion to three laminar substrates 10.Described the first figure roller 51, second graph roller 52 are cylindrical and are arranged in parallel.The surface of described the first figure roller 51 and second graph roller 52 is provided with microstructure graph.Described the first figure roller 51 surfaces are provided with first microstructure graph 511 corresponding with spreading microstructure 104.Described second graph roller 52 surfaces are provided with second microstructure graph 521 corresponding with prism microstructure 103.The width in the space between described the first figure roller 51 and second graph roller 52 equates with the thickness of described composite guide tabula rasa 100.
The first figure roller 51 and second graph roller 52 are arranged at the below of co-extrusion signature die head 20, and the space between described co-extrusion signature die head 20 and the first figure roller 51 and second graph roller 52 is facing each other.Described three laminar substrates 10 enter in the space between the first figure roller 51 and second graph roller 52, the first figure roller 51 and second graph roller 52 relatively rotate, three laminar substrates 10 are pushed and heated, thereby form respectively diffusion microstructure 104 and prism microstructure 103 two apparent surfaces of three laminar substrates 10.
Be understandable that, away from a side of the first figure roller 51, smooth roller 53 be set at second graph roller 52.Three laminar substrates 10 that are all formed with microstructure by two apparent surfaces between the first figure roller 51 and second graph roller 52 are sent between second graph roller 52 and smooth roller 53 by second graph roller 52.Control smooth roller 53 in lower temperature, make to form three laminar substrate 10 cooling curings of microstructure.
In described the first figure roller 51, second graph roller 52 and smooth roller 53, be provided with temperature control water route (not shown), for controlling the temperature of described the first figure roller 51, second graph roller 52 and smooth roller 53.In the time carrying out moulding, can control the first figure roller 51 and second graph roller 52 and there is higher temperature, thereby make three laminar substrates 10 of sheet be easy to form microstructure in softening state.
Be understandable that, the first figure roller 51 surfaces can adopt laser or ultraprecise Carving Machining to form to diffusion microstructure 104 graphs of a correspondence, prism microstructure 103 graphs of a correspondence on described second graph roller 52 surfaces can adopt diamond cutter cutting to form groove and form.
The 3rd step, cuts described three laminar substrates 10 that are formed with diffusion microstructure 104 and prism microstructure 103, obtains composite guide tabula rasa 100.
According to actual needs, three laminar substrates 10 that are formed with diffusion microstructure 104 and prism microstructure 103 are cut into predetermined size, obtain composite guide tabula rasa 100.
The method for making of the composite guide tabula rasa 100 that the technical program provides, the mode of giving as security by co-extrusion forms three laminar substrates of the coated base layer of two-layer photic zone, and adopts the mode of roll extrusion to form diffusion microstructure and prism microstructure on the surface of described three laminar substrates.The composite guide tabula rasa that the technical program provides has the simple advantage of manufacture craft.
Be understandable that, those skilled in the art also can do other and change in spirit of the present invention, within all should being included in the present invention's scope required for protection.
Claims (10)
1. a composite guide tabula rasa, comprise base layer and be formed at the first photic zone and second photic zone of the relative both sides of base layer, described the first photic zone and the second photic zone adopt polystyrene to make, described base layer adopts the dispersed polycarbonate that has polymethylmethacrylate micro particles to make, and described polymethylmethacrylate micro particles is as diffusion particle.
2. composite guide tabula rasa as claimed in claim 1, is characterized in that, described composite guide tabula rasa has exiting surface, and described exiting surface is the surface of the first photic zone away from described base layer, and described exiting surface one side is formed with prism microstructure.
3. composite guide tabula rasa as claimed in claim 2, is characterized in that, described prism microstructure is the tapered protrusion of the setting of multiple spaces and array arrangement.
4. composite guide tabula rasa as claimed in claim 2, is characterized in that, described composite guide tabula rasa has the bottom surface relative with described exiting surface, and described bottom surface is the surface of the second photic zone away from described base layer, and described bottom surface one side is formed with diffusion microstructure.
5. composite guide tabula rasa as claimed in claim 4, is characterized in that, described diffusion microstructure is the hemispherical groove of the setting of multiple intervals and array arrangement.
6. composite guide tabula rasa as claimed in claim 1, is characterized in that, the particle diameter of described polymethylmethacrylate micro particles is 0.5 micron to 50 microns.
7. a method for making for composite guide tabula rasa, comprises step:
Adopt co-extrusion signature die head to extrude and comprise the first photic zone, base layer and the second euphotic three laminar substrates, described base layer is sandwiched between described the first photic zone and the second photic zone, described the first photic zone and the second photic zone adopt polystyrene to make, and described base layer adopts the dispersed polycarbonate that has polymethylmethacrylate micro particles to make; And
Two surface rollings at described three laminar substrates form diffusion microstructure and prism microstructure.
8. the method for making of composite guide tabula rasa as claimed in claim 7, it is characterized in that, the described co-extrusion adopting is given as security die head and is given as security die head for piling up formula side direction charging co-extrusion, described co-extrusion is given as security die head and is interconnected with the first hopper and the second hopper respectively, in-built moulding the first photic zone and the second euphotic material polystyrene of being useful on of described the first hopper, the in-built dispersed polycarbonate that has polymethylmethacrylate micro particles that is useful on moulding base layer of described the second hopper, described the first hopper and co-extrusion are given as security between die head and are provided with the first screw rod, described the first screw rod heats for the polystyrene of giving as security die head to being about to enter co-extrusion, make its thawing to squeeze, described the first screw rod injects co-extrusion by two feed pipes by polystyrene material and gives as security die head, to form respectively the first photic zone and the second photic zone, described the second hopper and co-extrusion are given as security between die head and are provided with the second screw rod, described the second screw rod heats for the dispersed polycarbonate that has polymethylmethacrylate micro particles of giving as security die head to being about to enter co-extrusion, polycarbonate is melted to squeeze signature, and polymethylmethacrylate remains solid particle state, to form described base layer.
9. the method for making of composite guide tabula rasa as claimed in claim 7, it is characterized in that, adopt the first shaping roller and the second shaping roller to carry out roll extrusion to three laminar substrates and form diffusion microstructure and prism microstructure, described the first figure roller surface is provided with first microstructure graph corresponding with spreading microstructure, and described second graph roller surface is provided with second microstructure graph corresponding with prism microstructure.
10. the method for making of composite guide tabula rasa as claimed in claim 7, is characterized in that, described method for making also comprises the step that three laminar substrates of two surface rollings formation diffusion microstructures and prism microstructure are cut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310155036.2A CN104122618A (en) | 2013-04-29 | 2013-04-29 | Composite light guide plate and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310155036.2A CN104122618A (en) | 2013-04-29 | 2013-04-29 | Composite light guide plate and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104122618A true CN104122618A (en) | 2014-10-29 |
Family
ID=51768099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310155036.2A Pending CN104122618A (en) | 2013-04-29 | 2013-04-29 | Composite light guide plate and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104122618A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105109168A (en) * | 2015-09-16 | 2015-12-02 | 梁志勇 | Manufacturing method of LED light guide plate provided with textures |
| CN105974512A (en) * | 2016-06-06 | 2016-09-28 | 广州创维平面显示科技有限公司 | Light guide plate, backlight module, display device and manufacture method for light guide plate |
| CN106226862A (en) * | 2016-09-07 | 2016-12-14 | 东莞市鑫聚光电科技股份有限公司 | A kind of composite light guide plate |
| CN107870387A (en) * | 2016-09-28 | 2018-04-03 | 福建正德光电科技有限公司 | A kind of mixing material with guide-lighting performance |
| CN108333664A (en) * | 2018-01-18 | 2018-07-27 | 苏州三鑫时代新材料股份有限公司 | A kind of preparation method and its equipment of the light guide plate containing optics site and reflecting layer |
| CN108688121A (en) * | 2018-06-22 | 2018-10-23 | 合肥泰沃达智能装备有限公司 | A kind of composite light guide plate substrate heat extrusion formation equipment and its processing method |
| CN108790226A (en) * | 2018-06-22 | 2018-11-13 | 合肥泰沃达智能装备有限公司 | A kind of MULTILAYER COMPOSITE light guide plate processing substrate |
| CN108973175A (en) * | 2018-06-22 | 2018-12-11 | 合肥泰沃达智能装备有限公司 | A kind of composite light guide plate substrate processing equipment |
| CN110879431A (en) * | 2019-12-07 | 2020-03-13 | 广东欧迪明光电科技股份有限公司 | Brightening composite diffuser plate and manufacturing process thereof |
| WO2020177780A3 (en) * | 2019-09-16 | 2020-10-29 | 南京贝迪电子有限公司 | Composite prism light guide film production apparatus |
| CN114311866A (en) * | 2020-10-09 | 2022-04-12 | Oppo广东移动通信有限公司 | Shell of electronic equipment, preparation method of shell, preparation method of composite board and electronic equipment |
-
2013
- 2013-04-29 CN CN201310155036.2A patent/CN104122618A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105109168A (en) * | 2015-09-16 | 2015-12-02 | 梁志勇 | Manufacturing method of LED light guide plate provided with textures |
| CN105974512A (en) * | 2016-06-06 | 2016-09-28 | 广州创维平面显示科技有限公司 | Light guide plate, backlight module, display device and manufacture method for light guide plate |
| CN106226862A (en) * | 2016-09-07 | 2016-12-14 | 东莞市鑫聚光电科技股份有限公司 | A kind of composite light guide plate |
| CN107870387A (en) * | 2016-09-28 | 2018-04-03 | 福建正德光电科技有限公司 | A kind of mixing material with guide-lighting performance |
| CN108333664A (en) * | 2018-01-18 | 2018-07-27 | 苏州三鑫时代新材料股份有限公司 | A kind of preparation method and its equipment of the light guide plate containing optics site and reflecting layer |
| CN108688121A (en) * | 2018-06-22 | 2018-10-23 | 合肥泰沃达智能装备有限公司 | A kind of composite light guide plate substrate heat extrusion formation equipment and its processing method |
| CN108790226A (en) * | 2018-06-22 | 2018-11-13 | 合肥泰沃达智能装备有限公司 | A kind of MULTILAYER COMPOSITE light guide plate processing substrate |
| CN108973175A (en) * | 2018-06-22 | 2018-12-11 | 合肥泰沃达智能装备有限公司 | A kind of composite light guide plate substrate processing equipment |
| WO2020177780A3 (en) * | 2019-09-16 | 2020-10-29 | 南京贝迪电子有限公司 | Composite prism light guide film production apparatus |
| CN110879431A (en) * | 2019-12-07 | 2020-03-13 | 广东欧迪明光电科技股份有限公司 | Brightening composite diffuser plate and manufacturing process thereof |
| CN114311866A (en) * | 2020-10-09 | 2022-04-12 | Oppo广东移动通信有限公司 | Shell of electronic equipment, preparation method of shell, preparation method of composite board and electronic equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104122618A (en) | Composite light guide plate and manufacturing method thereof | |
| CN101261338B (en) | Method for making light guide board | |
| TWI647088B (en) | Device for manufacturing thickness uneven film and method for manufacturing thickness uneven film | |
| CN103913798B (en) | Light guide plate, backlight module, display device and method for manufacturing light guide plate | |
| CN103862618B (en) | Method and jig for manufacturing light guide plate and related light guide plate | |
| CN102029712B (en) | Optical sheet manufacturing apparatus and optical sheet manufacturing method | |
| CN101439582A (en) | Method for manufacturing light conducting plate | |
| JP4677460B2 (en) | Method for manufacturing light guide plate | |
| CN101602254A (en) | Asymmetrical beam diffused component and its manufacture method | |
| CN104076431A (en) | Composite light guide plate, composite light guide plate manufacturing method and manufacturing device thereof | |
| CN1827350A (en) | Device and method for manufacturing panel with embossing on surface | |
| TW201441035A (en) | Composite light guiding plate and method for manufacturing same | |
| JP5754749B2 (en) | Microstructure forming method | |
| JP2011098479A (en) | Method for manufacturing optical sheet having rugged shape on surface | |
| EP3049225B1 (en) | Dual-sided structured film articles | |
| EP3633436B1 (en) | Method for manufacturing stereoscopic image forming device, and stereoscopic image forming device | |
| TWI586518B (en) | Apparatus and method of manufacturing optical device with patterned micro-structure | |
| CN102582087B (en) | Manufacturing facility and manufacturing method of flat panel display backlight function modules | |
| KR20110044148A (en) | Method for producing resin sheet transferring surface shape | |
| CN101526640B (en) | Light guide plate and method for manufacturing same | |
| CN100378526C (en) | Device for forming wedge plate | |
| TWI237594B (en) | Wedge board forming device | |
| JP2007137058A (en) | Method of manufacturing embossed sheet | |
| CN105729841A (en) | Machining method for light guide boards | |
| CN1389335A (en) | Pearl grain plastic board and its production process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141029 |