CN209167575U - A kind of multilayered structure optical diffusion sheet - Google Patents
A kind of multilayered structure optical diffusion sheet Download PDFInfo
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- CN209167575U CN209167575U CN201822105991.6U CN201822105991U CN209167575U CN 209167575 U CN209167575 U CN 209167575U CN 201822105991 U CN201822105991 U CN 201822105991U CN 209167575 U CN209167575 U CN 209167575U
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Abstract
The utility model discloses a kind of multilayered structure optical diffusion sheets, belong to diffusion sheet technical field.The utility model includes basal layer and working lining, and the basal layer is one layer of parallel flat, and the working lining is made of the material layer of two layers or two layers or more different refractivity；Wherein, at least one layer of micro-structure, the upper surface of top layer's working lining are smooth between each working lining.The optical diffusion sheet light of the utility model homogenizes that direction is controllable, and the micro-structure reflected to light can preferably protect micro-structure in the inside of even mating plate, avoid damaging micro-structure in use to influence using effect.The utility model can adjust the scattering angle of optical scattering piece by adjusting refractive index difference degree, microstructure appearance and arrangement of micro-structure two sides working lining etc..
Description
Technical field
The utility model relates to diffusion sheet technical field, in particular to a kind of multilayered structure optical diffusion sheet.
Background technique
Diffusion sheet (Diffuser) is used to dissipate light, provides a uniform area source, thus in laser lighting, LED
Light field is homogenized is used widely in FPD.
At present there are two types of the main Types of diffusion sheet:
One is bead type, it is to will differ from the particle blending of substrate refractive index in substrate as scattering particles, is made
Refraction, reflection and scattering constantly occur in the different medium of two refractive index when by scattering layer for light, are generated with this
The effect of optics diffusion, however this mode, will be inevitably present absorption of the diffusion particle to light, cause the efficiency of light energy utilization
It is low, and the dispersal direction of light is difficult to control.
Another kind is pattern pressing type, it is to form the micro-structure of diffusible light in membrane surface, surface topography can be divided into
Machine pattern, regular morphology and undaform pattern, wherein the production of undaform pattern generallys use needed for laser processing method marking
Mode determines that pattern changes by controlling intensity and the beam size of laser energy, and such diffusion sheet efficiency is higher,
But due to realizing light diffusion by surface micro-structure, so the problems such as being easy to appear Micro-architecture deterioration in use process, shadow
Ring diffusion sheet effect.
How both the above diffusion sheet is overcome the problems, such as, developing the new diffusion sheet of one kind is the technology hardly possible for needing to capture at present
Topic.
Utility model content
In order to make up for the deficiencies of the prior art, the utility model provides a kind of multilayered structure optical diffusion sheet.
The technical solution of the utility model are as follows:
A kind of multilayered structure optical diffusion sheet, including basal layer and working lining, the basal layer are one layer of parallel flat, institute
Working lining is stated to be made of the material layer of two layers or two layers or more different refractivity；Wherein, between each working lining at least one layer it is micro-
Structure, the upper surface of top layer's working lining is smooth.
Preferably, the micro-structure is to be repeated cyclically structure or random distribution structure.
Preferably, the basal layer with a thickness of 0.1 ~ 10mm.
Preferably, working lining with a thickness of 10 μm ~ 250 μm.More have a choosing, working lining with a thickness of 40 μm ~
120μm。
Preferably, the micro-structure is lenticule pattern.
Further, the radius of curvature in the microstructure level direction is 20 μm ~ 200 μm, the radius of curvature of vertical direction
It is 20 μm ~ 200 μm.
It is furthermore preferred that the radius of curvature in the microstructure level direction is 40 μm ~ 150 μm, the radius of curvature of vertical direction
It is 40 μm ~ 150 μm.40 μm ~ 150 μm of radius of curvature micro-structure can be carved by single-point diamond or the works such as laser direct-writing
Skill is relatively easy to process, and the control to incident beam angle may be implemented in conjunction with the refractive index apolegamy of micro-structure.
Preferably, the micro-structure repetition period in the horizontal direction is 10 μm ~ 180 μm, in vertical direction
Repetition period is 10 μm ~ 180 μm.
More there is choosing, the micro-structure repetition period in the horizontal direction is 30 μm ~ 80 μm, in the repetition week of vertical direction
Phase is 30 μm ~ 80 μm.
It, can be with more flexible to horizontal and vertical by control micro-structure curvature in the repetition period both horizontally and vertically
Histogram to diffusion angle individually controlled.
Preferably, the basal layer is glassy layer, plastic layer, quartz layer or sapphire layer.
Preferably, each working lining is the different acrylic uv-curable glue material layer of refractive index, epoxies
Ultra-violet curing substratum transparent or polycarbonate-based thermoplastic material layer.
In the utility model, basal layer only plays a supporting role in protection, as long as transparent rigid material, as glass,
Plastics, quartz, sapphire etc.；Working layer is the transparent material for being easy to micro-structure forming, such as acrylic uv-curable glue, ring
Oxygen class ultra-violet curing transparent adhesive tape, polycarbonate-based thermoplastic material etc..
Preferably, diffusion angle is 1 ° ~ 150 °.More there is choosing, diffusion angle is 12 ° ~ 50 °.This is practical
Novel has the beneficial effect that
1, the micro-structure between each working lining of the utility model (more refractive index materials) is reflected different from bead type substrate
Scattering particles is mixed into rate material, forming the refraction of light, reflection and scattering to light using scattering particles in bead type
Homogenize, practical light homogenizes that direction is uncontrollable, and the micro-structure between the working lining in the utility model is to be pre-designed
Processing only carries out refraction to light to change direction by micro-structure between inner refractive index material layer, therefore the light side of homogenizing
To controllable.
2, for the micro-structure that the utility model is used to reflect light in the inside of even mating plate, being different from pattern pressing type will be micro-
Structure is processed on diffusion sheet surface, and the utility model can preferably protect micro-structure, avoid damaging in use
Bad micro-structure is to influence using effect.
3, the optical diffusion sheet of the utility model passes through the refractive index difference using micro-structure two layers of material layer in working lining
It realizes the diffusion to light, and adjusts optical scattering piece by adjusting refractive index difference degree, microstructure appearance and arrangement etc.
Scattering angle.
4, the utility model proposes diffusion sheet on two surfaces be all flat and smooth structure, and pattern pressing type diffusion sheet has one
A face is micro-structure face, and the diffusion sheet of the utility model being capable of the easier cleaning for carrying out surface in contrast.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of structural schematic diagram of the utility model optical scattering piece；
Fig. 2 is the top view of optical scattering piece in Fig. 1；
Fig. 3 is the horizontal cross-sectional view of optical scattering piece in Fig. 1；
Fig. 4 is the vertical direction sectional view of optical scattering piece in Fig. 1；
Fig. 5 is that the multiplexing of the utility model optical scattering piece makees schematic diagram of a layer structure.
Specific embodiment
Embodiment 1
As shown in Figure 1, Figure 2, Figure 3, Figure 4, a kind of multilayered structure optical diffusion sheet, by 1 first working lining 2 of basal layer and
Two working linings 3 are constituted.
Wherein, basal layer 1 be one layer of parallel flat, do not have optical texture, be mainly used for diffusion sheet provide protection and
Support.The lower surface of basal layer 1 is the bottom surface of entire optical diffusion sheet, the following table of the upper surface of basal layer 1 and the first working lining 2
Face is connected.
First working lining 2 is made of with the second working lining 3 material of different refractivity.The upper surface of first working lining 2 with
The lower surface of second working lining 3 is connected, and there are micro-structures between the first working lining 2 and the second working lining 3.Second working lining 3
Upper surface is smooth.
In the present embodiment,
Basal layer uses 100 millimeters of diameter, the K9 glass of 0.3 millimeter of thickness；
The acrylic uv-curable glue that refractive index is 1.46 is coated in basal layer glass surface, and 50 microns of thickness, as the
One working lining 2；
Regular array array lenticule pattern, micro-structure water are processed on 2 surface of the first working lining using laser writing technology
Square to radius of curvature R 1 and vertical direction radius of curvature R 2 be 80 microns, micro-structure in the horizontal direction repetition period T1 and hang down
Histogram to repetition period T2 be 50 microns；
In 100 microns of 2 surface coating thickness of the first working lining, another model acrylic ultra-violet curing that refractive index is 1.59
Glue, i.e. the second working lining 3 after this layer of solidification glue is solidified by uv-exposure.
The multilayered structure optical diffusion sheet completes, and surveys its performance using wavelength 532nm parallel beam incident and (is shown in Table
1)。
Embodiment 2
As shown in Figure 1, Figure 2, Figure 3, Figure 4, a kind of multilayered structure optical diffusion sheet, by 1 first working lining 2 of basal layer and
Two working linings 3 are constituted.
Wherein, basal layer 1 be one layer of parallel flat, do not have optical texture, be mainly used for diffusion sheet provide protection and
Support.The lower surface of basal layer 1 is the bottom surface of entire optical diffusion sheet, the following table of the upper surface of basal layer 1 and the first working lining 2
Face is connected.
First working lining 2 is made of with the second working lining 3 material of different refractivity.The upper surface of first working lining 2 with
The lower surface of second working lining 3 is connected, and there are micro-structures between the first working lining 2 and the second working lining 3.Second working lining 3
Upper surface is smooth.
In the present embodiment,
Basal layer uses 100 millimeters of diameter, the K9 glass of 0.3 millimeter of thickness；
The acrylic uv-curable glue that refractive index is 1.46 is coated in basal layer glass surface, and 50 microns of thickness, as the
One working lining 2；
Regular array array lenticule pattern, micro-structure water are processed on 2 surface of the first working lining using laser writing technology
It square is 40 microns to radius of curvature R 1, vertical direction radius of curvature R 2 is 100 microns, micro-structure repetition period in the horizontal direction
T1 and vertical direction repetition period T2 is 50 microns；
In 100 microns of 2 surface coating thickness of the first working lining, another model acrylic ultra-violet curing that refractive index is 1.59
Glue, i.e. the second working lining 3 after this layer of solidification glue is solidified by uv-exposure.
The multilayered structure optical diffusion sheet completes, and surveys its performance using wavelength 532nm parallel beam incident and (is shown in Table
1)。
Embodiment 3
As shown in Figure 1, Figure 2, Figure 3, Figure 4, a kind of multilayered structure optical diffusion sheet, by 1 first working lining 2 of basal layer and
Two working linings 3 are constituted.
Wherein, basal layer 1 be one layer of parallel flat, do not have optical texture, be mainly used for diffusion sheet provide protection and
Support.The lower surface of basal layer 1 is the bottom surface of entire optical diffusion sheet, the following table of the upper surface of basal layer 1 and the first working lining 2
Face is connected.
First working lining 2 is made of with the second working lining 3 material of different refractivity.The upper surface of first working lining 2 with
The lower surface of second working lining 3 is connected, and there are micro-structures between the first working lining 2 and the second working lining 3.Second working lining 3
Upper surface is smooth.
In the present embodiment,
Basal layer uses 100 millimeters of diameter, the K9 glass of 0.3 millimeter of thickness；
The acrylic uv-curable glue that refractive index is 1.46 is coated in basal layer glass surface, and 50 microns of thickness, as the
One working lining 2；
Regular array array lenticule pattern, micro-structure water are processed on 2 surface of the first working lining using laser writing technology
Square to radius of curvature R 1 be 120 microns, vertical direction radius of curvature R 2 be 100 microns, micro-structure repeats week in the horizontal direction
Phase T1 and vertical direction repetition period T2 is 50 microns；
In 100 microns of 2 surface coating thickness of the first working lining, another model acrylic ultra-violet curing that refractive index is 1.59
Glue, i.e. the second working lining 3 after this layer of solidification glue is solidified by uv-exposure.
The multilayered structure optical diffusion sheet completes, and surveys its performance using wavelength 532nm parallel beam incident and (is shown in Table
1)。
Embodiment 4
As shown in Figure 1, Figure 2, Figure 3, Figure 4, a kind of multilayered structure optical diffusion sheet, by 1 first working lining 2 of basal layer and
Two working linings 3 are constituted.
Wherein, basal layer 1 be one layer of parallel flat, do not have optical texture, be mainly used for diffusion sheet provide protection and
Support.The lower surface of basal layer 1 is the bottom surface of entire optical diffusion sheet, the following table of the upper surface of basal layer 1 and the first working lining 2
Face is connected.
First working lining 2 is made of with the second working lining 3 material of different refractivity.The upper surface of first working lining 2 with
The lower surface of second working lining 3 is connected, and there are micro-structures between the first working lining 2 and the second working lining 3.Second working lining 3
Upper surface is smooth.
In the present embodiment,
Basal layer uses 100 millimeters of diameter, the K9 glass of 0.3 millimeter of thickness；
The acrylic uv-curable glue that refractive index is 1.46 is coated in basal layer glass surface, and 50 microns of thickness, as the
One working lining 2；
Regular array array lenticule pattern, micro-structure water are processed on 2 surface of the first working lining using laser writing technology
It square is 80 microns to radius of curvature R 1, vertical direction radius of curvature R 2 is 80 microns, micro-structure repetition period in the horizontal direction
T1 is 50 microns, and vertical direction repetition period T2 is 30 microns；
In 100 microns of 2 surface coating thickness of the first working lining, another model acrylic ultra-violet curing that refractive index is 1.59
Glue, i.e. the second working lining 3 after this layer of solidification glue is solidified by uv-exposure.
The multilayered structure optical diffusion sheet completes, and surveys its performance using wavelength 532nm parallel beam incident and (is shown in Table
1)。
Embodiment 5
As shown in Figure 1, Figure 2, Figure 3, Figure 4, a kind of multilayered structure optical diffusion sheet, by 1 first working lining 2 of basal layer and
Two working linings 3 are constituted.
Wherein, basal layer 1 be one layer of parallel flat, do not have optical texture, be mainly used for diffusion sheet provide protection and
Support.The lower surface of basal layer 1 is the bottom surface of entire optical diffusion sheet, the following table of the upper surface of basal layer 1 and the first working lining 2
Face is connected.
First working lining 2 is made of with the second working lining 3 material of different refractivity.The upper surface of first working lining 2 with
The lower surface of second working lining 3 is connected, and there are micro-structures between the first working lining 2 and the second working lining 3.Second working lining 3
Upper surface is smooth.
In the present embodiment,
Basal layer uses 100 millimeters of diameter, the K9 glass of 0.3 millimeter of thickness；
The acrylic uv-curable glue that refractive index is 1.46 is coated in basal layer glass surface, and 50 microns of thickness, as the
One working lining 2；
Regular array array lenticule pattern, micro-structure water are processed on 2 surface of the first working lining using laser writing technology
It square is 80 microns to radius of curvature R 1, vertical direction radius of curvature R 2 is 80 microns, micro-structure repetition period in the horizontal direction
T1 is 40 microns, and vertical direction repetition period T2 is 30 microns；
In 100 microns of 2 surface coating thickness of the first working lining, another model acrylic ultra-violet curing that refractive index is 1.59
Glue, i.e. the second working lining 3 after this layer of solidification glue is solidified by uv-exposure.
The multilayered structure optical diffusion sheet completes, and surveys its performance using wavelength 532nm parallel beam incident and (is shown in Table
1)。
Embodiment 6
As shown in Figure 1, Figure 2, Figure 3, Figure 4, a kind of multilayered structure optical diffusion sheet, by 1 first working lining 2 of basal layer and
Two working linings 3 are constituted.
Wherein, basal layer 1 be one layer of parallel flat, do not have optical texture, be mainly used for diffusion sheet provide protection and
Support.The lower surface of basal layer 1 is the bottom surface of entire optical diffusion sheet, the following table of the upper surface of basal layer 1 and the first working lining 2
Face is connected.
First working lining 2 is made of with the second working lining 3 material of different refractivity.The upper surface of first working lining 2 with
The lower surface of second working lining 3 is connected, and there are micro-structures between the first working lining 2 and the second working lining 3.Second working lining 3
Upper surface is smooth.
In the present embodiment,
Basal layer uses 100 millimeters of diameter, the K9 glass of 0.3 millimeter of thickness；
The acrylic uv-curable glue that refractive index is 1.51 is coated in basal layer glass surface, and 50 microns of thickness, as the
One working lining 2；
Regular array array lenticule pattern, micro-structure water are processed on 2 surface of the first working lining using laser writing technology
It square is 80 microns to radius of curvature R 1, vertical direction radius of curvature R 2 is 80 microns, micro-structure repetition period in the horizontal direction
T1 and vertical direction repetition period T2 is 50 microns；
In 100 microns of 2 surface coating thickness of the first working lining, another model acrylic ultra-violet curing that refractive index is 1.59
Glue, i.e. the second working lining 3 after this layer of solidification glue is solidified by uv-exposure.
The multilayered structure optical diffusion sheet completes, and surveys its performance using wavelength 532nm parallel beam incident and (is shown in Table
1)。
Embodiment 7
As shown in Figure 1, Figure 2, Figure 3, Figure 4, a kind of multilayered structure optical diffusion sheet, by 1 first working lining 2 of basal layer and
Two working linings 3 are constituted.
Wherein, basal layer 1 be one layer of parallel flat, do not have optical texture, be mainly used for diffusion sheet provide protection and
Support.The lower surface of basal layer 1 is the bottom surface of entire optical diffusion sheet, the following table of the upper surface of basal layer 1 and the first working lining 2
Face is connected.
First working lining 2 is made of with the second working lining 3 material of different refractivity.The upper surface of first working lining 2 with
The lower surface of second working lining 3 is connected, and there are micro-structures between the first working lining 2 and the second working lining 3.Second working lining 3
Upper surface is smooth.
In the present embodiment,
Basal layer uses 100 millimeters of diameter, the K9 glass of 0.3 millimeter of thickness；
The acrylic uv-curable glue that refractive index is 1.46 is coated in basal layer glass surface, and 50 microns of thickness, as the
One working lining 2；
Regular array array lenticule pattern, micro-structure water are processed on 2 surface of the first working lining using laser writing technology
It square is 80 microns to radius of curvature R 1, vertical direction radius of curvature R 2 is 80 microns, micro-structure repetition period in the horizontal direction
T1 and vertical direction repetition period T2 is 50 microns；
In 100 microns of 2 surface coating thickness of the first working lining, another model acrylic ultra-violet curing that refractive index is 1.67
Glue, i.e. the second working lining 3 after this layer of solidification glue is solidified by uv-exposure.
The multilayered structure optical diffusion sheet completes, and surveys its performance using wavelength 532nm parallel beam incident and (is shown in Table
1)。
Embodiment 8
As shown in figure 5, a kind of more working lining feature optical diffusion sheets, by basal layer 1, the first working lining 2, the second working lining
3, third working lining 4 and the 4th working lining 5 are constituted.
Wherein, basal layer 1 be one layer of parallel flat, do not have optical texture, be mainly used for diffusion sheet provide protection and
Support.The lower surface of basal layer 1 is the bottom surface of entire optical diffusion sheet, the following table of the upper surface of basal layer 1 and the first working lining 2
Face is connected.
First working lining 2 is made of with the second working lining 3 material of different refractivity.The upper surface of first working lining 2 with
The lower surface of second working lining 3 is connected, and there are micro-structures between the first working lining 2 and the second working lining 3.Second working lining 3
Upper surface is smooth.
The upper surface of second working lining 3 is connected with the lower surface of third working lining 4.Third working lining 4 and the 4th working lining 5
It is made of the material of different refractivity.The upper surface of third working lining 4 is connected with the lower surface of the 4th working lining 5, third work
There are micro-structures between layer 4 and the 4th working lining 5.The upper surface of 4th working lining 5 is smooth.
In the present embodiment,
Basal layer uses 100 millimeters of diameter, the K9 glass of 0.3 millimeter of thickness；
The acrylic uv-curable glue that refractive index is 1.46 is coated in basal layer glass surface, and 50 microns of thickness, as the
One working lining 2；
Regular array array lenticule pattern, micro-structure water are processed on 2 surface of the first working lining using laser writing technology
Square to radius of curvature R 1 and vertical direction radius of curvature R 2 be 80 microns, micro-structure in the horizontal direction repetition period T1 and hang down
Histogram to repetition period T2 be 50 microns；
In 100 microns of 2 surface coating thickness of the first working lining, another model acrylic ultra-violet curing that refractive index is 1.59
Glue, i.e. the second working lining 3 after this layer of solidification glue is solidified by uv-exposure.
The acrylic uv-curable glue that refractive index is 1.46 is coated in 3 surface of the second working lining, and 50 microns of thickness, as the
Three working linings 4；
Regular array array lenticule pattern, micro-structure water are processed on 4 surface of third working lining using laser writing technology
It square is 80 microns to radius of curvature R 1, vertical direction radius of curvature R 2 is 80 microns, micro-structure repetition period in the horizontal direction
T1 is 40 microns, and vertical direction repetition period T2 is 30 microns；
In 100 microns of 4 surface coating thickness of third working lining, another model acrylic ultra-violet curing that refractive index is 1.67
Glue, i.e. the 4th working lining 5 after this layer of solidification glue is solidified by uv-exposure.
The multilayered structure optical diffusion sheet completes, and surveys its performance using wavelength 532nm parallel beam incident and (is shown in Table
1)。
Each embodiment optical diffusion sheet performance test table of table 1
As shown in Table 1, the utility model can be by changing micro-structure between the first working lining 2 and the second working lining 3
The refringence of radius of curvature, repetition period and the first working lining 2 and the second working lining 3 realizes different outgoing to modulate
Light dispersion angle.
In the utility model, basal layer 1 only plays a supporting role in protection, and other than using the models glass such as K9, can also make
With other transparent rigid materials, such as plastics, quartz, sapphire；Working layer other than using acrylic uv-curable glue,
Other can also be used to be easy to micro-structure forming transparent material, such as epoxies uv-curable glue, polycarbonate-based thermoplastic material.
The utility model is flexibly easy-to-use, can protect to workspace micro-structure, avoids damaging in use
Bad micro-structure is to influence using effect.
The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above.Current row
The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments
Only illustrate the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model is also
It will have various changes and improvements, these various changes and improvements fall within the scope of the claimed invention.The utility model
Claimed range is defined by the appending claims and its equivalent thereof.
Claims (10)
1. a kind of multilayered structure optical diffusion sheet, including basal layer and working lining, it is characterised in that: the basal layer is one layer flat
Row plate, the working lining are made of the material layer of two layers or two layers or more different refractivity；Wherein, between each working lining at least
There is one layer of micro-structure, the upper surface of top layer's working lining is smooth.
2. multilayered structure optical diffusion sheet as described in claim 1, it is characterised in that: the micro-structure is to be repeated cyclically structure
Or random distribution structure.
3. multilayered structure optical diffusion sheet as described in claim 1, it is characterised in that: the basal layer with a thickness of 0.1 ~
10mm。
4. multilayered structure optical diffusion sheet as claimed in claim 1 or 3, it is characterised in that: working lining with a thickness of 10 μm ~ 250
μm。
5. multilayered structure optical diffusion sheet as described in claim 1, it is characterised in that: the micro-structure is lenticule pattern.
6. multilayered structure optical diffusion sheet as claimed in claim 5, it is characterised in that: the curvature in the microstructure level direction half
Diameter is 20 μm ~ 200 μm, and the radius of curvature of vertical direction is 20 μm ~ 200 μm.
7. the multilayered structure optical diffusion sheet as described in claim 1 or 5, it is characterised in that: the micro-structure is in the horizontal direction
Repetition period is 10 μm ~ 180 μm, is 10 μm ~ 180 μm in the repetition period of vertical direction.
8. multilayered structure optical diffusion sheet as described in claim 1, it is characterised in that: the basal layer be glassy layer, plastic layer,
Quartz layer or sapphire layer.
9. multilayered structure optical diffusion sheet as described in claim 1, it is characterised in that: each working lining is that refractive index is different
Acrylic uv-curable glue material layer, epoxies ultra-violet curing substratum transparent or polycarbonate-based thermoplastic material layer.
10. multilayered structure optical diffusion sheet as described in claim 1, it is characterised in that: its diffusion angle is 1 ° ~ 150 °.
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| CN109407187A (en) * | 2018-12-15 | 2019-03-01 | 上海鲲游光电科技有限公司 | A kind of multilayered structure optical diffusion sheet |
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| CN109407187A (en) * | 2018-12-15 | 2019-03-01 | 上海鲲游光电科技有限公司 | A kind of multilayered structure optical diffusion sheet |
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| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Huang He Inventor after: Lin Tao Inventor after: Lou Xinye Inventor after: Li Qing Inventor before: Huang He Inventor before: Lin Tao Inventor before: Wu Xingkun Inventor before: Lou Xinye Inventor before: Li Qing |