CN110879431A - Brightening composite diffuser plate and manufacturing process thereof - Google Patents
Brightening composite diffuser plate and manufacturing process thereof Download PDFInfo
- Publication number
- CN110879431A CN110879431A CN201911245976.4A CN201911245976A CN110879431A CN 110879431 A CN110879431 A CN 110879431A CN 201911245976 A CN201911245976 A CN 201911245976A CN 110879431 A CN110879431 A CN 110879431A
- Authority
- CN
- China
- Prior art keywords
- formula
- parts
- layer
- brightening
- diffuser plate
- 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
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0268—Diffusing elements; Afocal elements characterized by the fabrication or manufacturing method
-
- 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
-
- 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
Abstract
The invention discloses a brightening composite diffuser plate and a manufacturing process thereof, wherein the brightening composite diffuser plate comprises a formula A and a formula B, wherein the formula A comprises the following components: 100 parts of GPPS raw material; 3 parts of master batch containing organic silicon; the formula B comprises: 100 parts of GPPS raw material, 30 parts of master batch containing organic silicon and 5-10 parts of proper amount of inorganic dispersing agent master batch. When designing a roller, the upper roller is designed into a prism array, and the lower roller is designed into a micro-lens array which mutually corresponds; and a composite extrusion process is adopted, so that the overall brightening effect is improved, but the diffuse reflection, refraction and scattering functions are not reduced, the high-quality requirements of the LED lighting and TV backlight modules in the market are met, and the enterprise cost is further reduced.
Description
Technical Field
The invention relates to the field of composite diffuser plates, in particular to a brightening composite diffuser plate and a manufacturing process thereof.
Background
The light diffusion plate is characterized in that a physical phenomenon of refraction, reflection and scattering is generated when light meets two media with different refractive indexes (densities) in the traveling path by a chemical or physical means, an inorganic or organic light diffusion agent is added into a base material such as PMMA, PC, PS, PP and the like, or the light is artificially adjusted through an array arrangement of micro-feature structures on the surface of the base material, so that the light is refracted, reflected and scattered in different directions, the traveling path of the light is changed, the incident light is fully dispersed to generate an optical diffusion effect, and a point light source emitted by an LED is changed into a surface light source and is generally widely applied to TV backlight modules and LED illumination.
Because the price advantage of PS (polystyrene) raw materials in all base materials is obvious, most of the base materials of the light diffusion plate used in the market at present are polystyrene, but the surface hardness of the polystyrene is not high, the phenomena of scratching, edge melting, cracking and the like are easily caused in the processing and carrying processes, the transmittance is low, and the effect is relatively poor when the TV is displayed in a backlight mode.
Most of the light diffusion plates on the market at present are formed by monomer extrusion, and in the prior art, different amounts of organic silicon diffusion agents and inorganic diffusion agents are added into GPPS to adjust the light transmittance and haze of the diffusion plate. The light transmittance and the haze of the diffusion plate with a single-layer structure are difficult to be simultaneously improved, so that the diffusion plate can only meet the requirement of common LED illumination. And the direct type high-fog high-transmittance requirement of the LED illumination trend and the market demand of diffuse reflection of the surface brightening effect of the TV backlight module are difficult to meet.
Disclosure of Invention
The present invention is directed to a brightness enhancing composite diffuser plate and a manufacturing process thereof, which solves the above problems.
In order to achieve the purpose, the invention provides the following technical scheme: a brightening composite diffuser plate and its making technology, including formula A and formula B, formula A includes: 100 parts of GPPS raw material; 3 parts of master batch containing organic silicon; the formula B comprises: 100 parts of GPPS raw material, 30 parts of master batch containing organic silicon and 5-10 parts of proper amount of inorganic dispersing agent master batch.
A manufacturing process of a brightening composite diffuser plate comprises the following specific steps:
the method comprises the following steps: producing by using double-screw composite co-extrusion equipment, selecting a screw of a main machine to feed the intermediate layer of the base material, and selecting a screw of an auxiliary machine to feed the diffusion layer and the lower brightening layer;
step two: the design of the roll lines of the middle roller and the rear roller, wherein the middle roller is used as a diffusion layer and is designed into a lens array, and the rear roller is used as a brightening layer and is designed into a prism array;
step three: stirring the material of the formula A by a No. 1 stirrer for 30 minutes, pumping the material into a main machine hopper, stirring the material of the formula B by a No. 2 stirrer for 30 minutes, pumping the material into an auxiliary machine hopper, regulating the rotating speed of an auxiliary machine screw and the rotating speed of a metering pump to control the thickness of the layer to be 10-15% of the thickness of the plate, and then extruding the diffusion plate which is formed by compounding and co-extruding the main machine screw and the auxiliary machine screw.
As a preferred technical solution of the present invention, the lens layer of the diffusion layer includes a plurality of hemispherical convex mirrors, adjacent convex mirrors are in edge contact, the brightness enhancement layer includes a plurality of prisms, adjacent prisms are in edge contact, the width of the prism is twice the width of the convex mirror, and one prism is aligned with two corresponding convex mirrors.
As a preferred embodiment of the present invention, the light emitted from the side of the prism enters the upper convex mirror, and the light is prevented from directly emitting from the gap between the convex mirrors.
The invention has the beneficial effects that: when designing a roller, the upper roller is designed into a prism array, and the lower roller is designed into a micro-lens array which mutually corresponds; and a composite extrusion process is adopted, so that the overall brightening effect is improved, but the diffuse reflection, refraction and scattering functions are not reduced, the high-quality requirements of the LED lighting and TV backlight modules in the market are met, and the enterprise cost is further reduced.
Detailed Description
The following detailed description of the preferred embodiments of the present invention is provided to enable those skilled in the art to more readily understand the advantages and features of the present invention and to clearly define the scope of the invention.
Example (b): the invention provides a technical scheme that: a brightening composite diffuser plate and its making technology, including formula A and formula B, formula A includes: 100 parts of GPPS raw material; 3 parts of master batch containing organic silicon; the formula B comprises: 100 parts of GPPS raw material, 30 parts of master batch containing organic silicon and 5-10 parts of proper amount of inorganic dispersing agent master batch.
A manufacturing process of a brightening composite diffuser plate comprises the following specific steps:
the method comprises the following steps: producing by using double-screw composite co-extrusion equipment, selecting a screw of a main machine to feed the intermediate layer of the base material, and selecting a screw of an auxiliary machine to feed the diffusion layer and the lower brightening layer;
step two: the design of the roll lines of the middle roller and the rear roller, wherein the middle roller is used as a diffusion layer and is designed into a lens array, and the rear roller is used as a brightening layer and is designed into a prism array;
step three: stirring the material of the formula A by a No. 1 stirrer for 30 minutes, pumping the material into a main machine hopper, stirring the material of the formula B by a No. 2 stirrer for 30 minutes, pumping the material into an auxiliary machine hopper, regulating the rotating speed of an auxiliary machine screw and the rotating speed of a metering pump to control the thickness of the layer to be 10-15% of the thickness of the plate, and then extruding the diffusion plate which is formed by compounding and co-extruding the main machine screw and the auxiliary machine screw.
Density of the obtained diffusion plate Material<1.06g/cm3(ii) a The total light transmittance is more than or equal to 60 percent; the haze is more than or equal to 93 percent; using a double-screw and three-in-one composite co-extrusion die head: the main machine screw is used for supplying a substrate middle layer, the auxiliary machine screw is used for supplying an upper diffusion layer and a lower brightening layer to be extruded through a composite co-extrusion die head, and the thickness of the control layer accounts for 10-15% of the thickness of the plate by adjusting the rotating speed of the auxiliary machine screw and the rotating speed of a metering pump; the method comprises the following steps of (1) designing reasonably designed roll grains of a middle roll and a rear roll, wherein the middle roll is used as a diffusion layer and is designed into a lens array; the rear roller is used as a brightening layer and is designed into a prism array; the lens layer of the diffusion layer comprises a plurality of hemispherical convex lenses, the edges of the adjacent convex lenses are in contact, the prism layer of the brightening layer comprises a plurality of prisms, the edges of the adjacent prisms are also in contact, the width of each prism is twice of the width of each convex lens, and one prism is aligned with the two corresponding convex lenses. The light emitted from the side edge of each prism enters the convex lens on the upper layer, so that the light is prevented from being directly emitted from the gap between the convex lenses, the convergence effect of the brightening diffusion plate on the light is ensured, the brightness is improved, the included angle between the prisms is increased as much as possible, and the visual angle is improved; the reasonable combination formula is used: host recipe (middle layer): 100 parts of GPPS raw material and 3 parts of master batch containing organic silicon; auxiliary formula (diffusion layer and brightening layer): 100 parts of GPPS raw material, 30 parts of master batch containing organic silicon and 5-10 parts of proper amount of inorganic dispersing agent master batch; the thickness of the upper layer and the lower layer is only 10-15 of the total thickness; therefore, the addition proportion of the organic silicon diffusant is more than that of monomer extrusion, the haze of the organic silicon diffusant is increased under the condition that the light transmittance is met, and the shielding property of a light source is enhanced; the production cost of enterprises is also reduced invisibly; the double-screw (main screw and auxiliary screw) composite co-extrusion production line is used for extrusion and composite molding, a proper formula is adjusted, and a proper light diffusant is added into the diffusion layer and the brightening layer, so that the haze and the light transmittance are met, the light source can be well shielded, and the like, and the cost is further saved for enterprisesAnd meets the high requirement of the light diffusion plate on high transmittance and high fog in the current market.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (4)
1. A brightening composite diffuser plate comprises a formula A and a formula B, and is characterized in that: the formula A comprises: 100 parts of GPPS raw material; 3 parts of master batch containing organic silicon; the formula B comprises: 100 parts of GPPS raw material, 30 parts of master batch containing organic silicon and 5-10 parts of proper amount of inorganic dispersing agent master batch.
2. A process for making a brightness enhancing composite diffuser plate as recited in claim 1, wherein: the method comprises the following specific steps:
the method comprises the following steps: producing by using double-screw composite co-extrusion equipment, selecting a screw of a main machine to feed the intermediate layer of the base material, and selecting a screw of an auxiliary machine to feed the diffusion layer and the lower brightening layer;
step two: the design of the roll lines of the middle roller and the rear roller, wherein the middle roller is used as a diffusion layer and is designed into a lens array, and the rear roller is used as a brightening layer and is designed into a prism array;
step three: stirring the material of the formula A by a No. 1 stirrer for 30 minutes, pumping the material into a main machine hopper, stirring the material of the formula B by a No. 2 stirrer for 30 minutes, pumping the material into an auxiliary machine hopper, regulating the rotating speed of an auxiliary machine screw and the rotating speed of a metering pump to control the thickness of the layer to be 10-15% of the thickness of the plate, and then extruding the diffusion plate which is formed by compounding and co-extruding the main machine screw and the auxiliary machine screw.
3. A process for making a brightness enhancing composite diffuser plate as recited in claim 2, wherein: the lens layer of the diffusion layer comprises a plurality of hemispherical convex lenses, the edges of the adjacent convex lenses are in contact, the brightening layer comprises a plurality of prisms, the edges of the adjacent prisms are in contact, the width of each prism is twice the width of each convex lens, and one prism is aligned with the two corresponding convex lenses.
4. A process for making a brightness enhancing composite diffuser plate as recited in claim 2, wherein: the light emitted from the side edge of the prism enters the convex lens on the upper layer, and the light is prevented from being directly emitted from a gap between the convex lenses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911245976.4A CN110879431A (en) | 2019-12-07 | 2019-12-07 | Brightening composite diffuser plate and manufacturing process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911245976.4A CN110879431A (en) | 2019-12-07 | 2019-12-07 | Brightening composite diffuser plate and manufacturing process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110879431A true CN110879431A (en) | 2020-03-13 |
Family
ID=69730129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911245976.4A Pending CN110879431A (en) | 2019-12-07 | 2019-12-07 | Brightening composite diffuser plate and manufacturing process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110879431A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113504591A (en) * | 2021-07-08 | 2021-10-15 | 江西盛汇光学科技协同创新有限公司 | Diffusion brightening composite optical membrane and preparation method thereof |
| CN116257022A (en) * | 2022-12-01 | 2023-06-13 | 南京贝迪新材料科技股份有限公司 | Intelligent control method and system for color gamut performance in quantum dot diffusion plate production process |
| CN116257022B (en) * | 2022-12-01 | 2024-05-10 | 南京贝迪新材料科技股份有限公司 | Intelligent control method and system for color gamut performance in quantum dot diffusion plate production process |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103707486A (en) * | 2013-12-30 | 2014-04-09 | 南京诚盟机械有限公司 | Multifunctional adjustable twin-screw extruder unit |
| CN104122618A (en) * | 2013-04-29 | 2014-10-29 | 鸿富锦精密工业（深圳）有限公司 | Composite light guide plate and manufacturing method thereof |
| CN105034309A (en) * | 2015-08-27 | 2015-11-11 | 常州市联丰光电科技有限公司 | Co-rotating twin-screw compound extruder for producing light diffusion plates and production process thereof |
| CN105175916A (en) * | 2015-08-27 | 2015-12-23 | 常州市联丰光电科技有限公司 | Production technology for composite co-extrusion PS diffuser plate |
-
2019
- 2019-12-07 CN CN201911245976.4A patent/CN110879431A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104122618A (en) * | 2013-04-29 | 2014-10-29 | 鸿富锦精密工业（深圳）有限公司 | Composite light guide plate and manufacturing method thereof |
| CN103707486A (en) * | 2013-12-30 | 2014-04-09 | 南京诚盟机械有限公司 | Multifunctional adjustable twin-screw extruder unit |
| CN105034309A (en) * | 2015-08-27 | 2015-11-11 | 常州市联丰光电科技有限公司 | Co-rotating twin-screw compound extruder for producing light diffusion plates and production process thereof |
| CN105175916A (en) * | 2015-08-27 | 2015-12-23 | 常州市联丰光电科技有限公司 | Production technology for composite co-extrusion PS diffuser plate |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113504591A (en) * | 2021-07-08 | 2021-10-15 | 江西盛汇光学科技协同创新有限公司 | Diffusion brightening composite optical membrane and preparation method thereof |
| CN116257022A (en) * | 2022-12-01 | 2023-06-13 | 南京贝迪新材料科技股份有限公司 | Intelligent control method and system for color gamut performance in quantum dot diffusion plate production process |
| CN116257022B (en) * | 2022-12-01 | 2024-05-10 | 南京贝迪新材料科技股份有限公司 | Intelligent control method and system for color gamut performance in quantum dot diffusion plate production process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8851735B2 (en) | Uniform reflective light-guide apparatus, and backlight module and LCD device having the same | |
| US7503674B2 (en) | High-brightness diffusion plate with trapezoid lens | |
| CN101457906B (en) | Backlight unit | |
| CN101310213B (en) | Light diffusion plate for liquid crystal display | |
| WO2006137459A1 (en) | Light diffusing plate and lighting device using it | |
| CN103185912B (en) | Microstructure light guide plate and side light type backlight module | |
| CN101836037A (en) | Surface light source | |
| CN104375226B (en) | A kind of diffusion type blast reflectance coating and back lighting device | |
| CN106681056A (en) | Backlight module containing quantum-dot diffusion plate | |
| CN102620193A (en) | Sectional light emitting diode (LED) backlight module and liquid crystal display device | |
| CN102096128A (en) | Three-layer composite high-performance optical diffusion film and preparation method thereof | |
| CN103389531A (en) | Reflecting film manufacturing method and backlight module | |
| CN110879431A (en) | Brightening composite diffuser plate and manufacturing process thereof | |
| EP3457182B1 (en) | Film applied in display screen, display screen, and terminal | |
| CN102620219A (en) | Backlight module and liquid crystal display device | |
| CN105182455B (en) | The production method of diffuser plate | |
| CN102096127B (en) | Three-layer composite type anti-scrape high-performance optical diffusion film and preparation method thereof | |
| US8425067B2 (en) | Composite diffuser structure and backlight module | |
| CN101408629A (en) | Backlight module unit and prism lens | |
| CN113176623B (en) | Light diffusion plate with multiple refractive indexes and synthesis method thereof | |
| CN207181734U (en) | The multi-functional clad plate of superelevation light transmission rate high diffusivity | |
| CN105549135A (en) | Bright enhancement film and preparation method thereof, and display device comprising bright enhancement film | |
| CN205910360U (en) | Optical function board | |
| CN102096129B (en) | Three-layer compound antistatic high-performance optical diffusion membrane and preparation method thereof | |
| KR101068635B1 (en) | High brightness diffussion film improved engraving proportion and Preparing thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200313 |
|
| RJ01 | Rejection of invention patent application after publication |