CN116224478B - Peep-proof film and display device - Google Patents
Peep-proof film and display device Download PDFInfo
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- CN116224478B CN116224478B CN202310513772.4A CN202310513772A CN116224478B CN 116224478 B CN116224478 B CN 116224478B CN 202310513772 A CN202310513772 A CN 202310513772A CN 116224478 B CN116224478 B CN 116224478B
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- 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
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/04—Prisms
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
Abstract
The invention discloses an anti-peeping film and a display device, and relates to the technical field of display. Wherein, this peep-proof membrane and display device includes: a first transparent substrate; the second transparent substrate is arranged opposite to the first transparent substrate; the third transparent substrate is arranged on the second transparent substrate at one side far away from the first transparent substrate; a prism film, one side of which is connected with the first transparent substrate, and the other side of which extends from the first transparent substrate to a direction approaching the second transparent substrate; a plurality of first shading units; a plurality of second shading units; a plurality of third shading units. The invention solves the problems that the prior peep-proof film microstructure design needs high depth-to-width ratio, so that the microstructure is very difficult in the hot-pressing transfer printing or photo-curing transfer printing process, has serious transfer printing rate or demolding problem, causes high cost of transfer printing material or mold surface treatment, or causes slow transfer printing speed, and is unfavorable for industrial roll-to-roll production efficiency.
Description
Technical Field
The invention relates to the technical field of display, in particular to a peep-proof film and a display device.
Background
At present, the design of the peep-proof film mainly uses a microstructure grating to limit the visible angle of light after penetrating through the film.
In order to achieve a good peep-proof angle, the existing peep-proof film needs high depth-to-width ratio, often reaches 10-30, and the microstructure is very difficult to transfer in the hot-press transfer printing or photo-curing transfer printing process, has serious transfer printing rate or demolding problem, causes the cost of transfer printing material or mold surface treatment to be high, or causes the transfer printing speed to be slow, is unfavorable for the problem of industrial roll-to-roll production efficiency, and has not been proposed an effective solution at present.
Disclosure of Invention
The invention aims to: a privacy film and a display device are provided to solve the above problems in the prior art.
The technical scheme is as follows: a privacy film comprising: a first transparent substrate; the second transparent substrate is arranged opposite to the first transparent substrate; the third transparent substrate is arranged on the second transparent substrate at one side far away from the first transparent substrate; a prism film, one side of which is connected with the first transparent substrate, and the other side of which extends from the first transparent substrate to a direction approaching the second transparent substrate; the first shading units are arranged on the second transparent substrate close to one side of the prism film at intervals; the second light shielding units are arranged between the second transparent base material and the third transparent base material at intervals and are respectively arranged above the first light shielding units in a one-to-one correspondence manner; the plurality of third light shielding units are arranged on the third transparent base material far away from one side of the second transparent base material at intervals and are respectively arranged above the plurality of second light shielding units in a one-to-one correspondence manner; the first light shielding unit, the second light shielding unit and the third light shielding unit are arranged in a center axis symmetry mode;
the width of the first light shielding unit is A1, the width of the second light shielding unit is A2, and the width of the third light shielding unit is A3, wherein the ratio interval of the width A3 of the third light shielding unit to the width A2 of the second light shielding unit is: the ratio relation between the width A1 of the first shading unit and the width A2 of the second shading unit is that the ratio relation is that the ratio is more than or equal to 0.95 and less than or equal to 1.1: a2 And is more than or equal to 2A1.
Preferably, a first adhesive layer is provided between the second transparent substrate and the prism film.
Preferably, a second adhesive layer is provided between the second transparent substrate and the third transparent substrate.
Preferably, the width of the first light shielding unit is A1 and the thickness of the second transparent substrate is C1, where a ratio interval of the thickness C1 of the second transparent substrate to the width A1 of the first light shielding unit is: C1/A1 is less than or equal to 5.
Preferably, the width A1 of the first light shielding unit is 5-10 μm, the width A2 of the second light shielding unit is 10-25 μm, and the width A3 of the third light shielding unit is 9.5-25 μm.
Preferably, a first light transmitting unit is formed between adjacent first light shielding units, a second light transmitting unit is formed between adjacent second light shielding units, and a third light transmitting unit is formed between adjacent third light shielding units.
Preferably, the width of the first light transmitting unit is B, and the ratio interval of the width B of the first light transmitting unit to the width A1 of the first light shielding unit is B/A1 < 10.
Preferably, the thickness of the third transparent substrate is C2, and the ratio of the thickness C2 of the third transparent substrate to the thickness C1 of the second transparent substrate is: C2/C1 is less than or equal to 2.
In order to solve the above problems, the invention also discloses a display device, which comprises a display panel and the peep-proof film in any embodiment, wherein the peep-proof film is arranged at one side of the display panel.
The beneficial effects are that: in this application embodiment, adopt the mode of addding prism membrane and a plurality of light-shielding unit, through being provided with multilayer light-shielding unit in prism membrane top, reached the purpose of convergence big visual angle light intensity, control visual angle and peep-proof, thereby realized avoiding using the technical effect of high aspect ratio microstructure, and then solved current peep-proof membrane in order to reach good peep-proof angle, the microstructure design all needs high aspect ratio, often reach 10-30, such microstructure is all very difficult in hot pressing transfer printing or photocuring transfer printing, there is serious transfer rate or drawing of patterns problem, cause transfer material or mould surface treatment's cost to be expensive, or make transfer printing speed slow, be unfavorable for industrial roll-to-roll production efficiency's technical problem.
Drawings
FIG. 1 is a schematic view of the planar structure of a privacy film of the present invention;
fig. 2 is a schematic plan view of another embodiment of the privacy film of the present invention;
FIG. 3 is a schematic view of the privacy film of the present invention in light path blocking;
FIG. 4 is a graph of prismatic film intensity versus angular trend;
FIG. 5 is a schematic diagram of an embodiment of the present invention;
FIG. 6 is a schematic diagram of a second embodiment of the present invention;
FIG. 7 is a schematic view of a third embodiment of the present invention;
FIG. 8 is a schematic diagram of a fourth embodiment of the present invention;
FIG. 9 is a schematic diagram of a fifth embodiment of the present invention;
FIG. 10 is a schematic view of a sixth embodiment of the present invention;
FIG. 11 is a schematic diagram of a seventh embodiment of the present invention;
FIG. 12 is a schematic view of an eighth construction of an embodiment of the present invention;
FIG. 13 is a schematic view of a ninth embodiment of the present invention;
FIG. 14 is a schematic view of a tenth construction of an embodiment of the present invention;
FIG. 15 is a schematic view of an eleventh embodiment of the present invention;
FIG. 16 is a schematic view showing a twelve structures of an embodiment of the present invention;
FIG. 17 is a schematic view of a thirteenth embodiment of the present invention;
FIG. 18 is a schematic diagram of a fourteen-structure embodiment of the invention;
FIG. 19 is a schematic diagram of a fifteen-piece construction of an embodiment of the present invention;
FIG. 20 is a schematic view showing the structure of comparative example 1 of the present invention;
FIG. 21 is a schematic view showing the structure of comparative example 2 of the present invention;
FIG. 22 is a schematic view showing the structure of comparative example 3 of the present invention;
FIG. 23 is a schematic structural view of comparative example 4 of the present invention;
fig. 24 is a schematic structural view of comparative example 5 of the present invention.
The reference numerals are: 10. a first transparent substrate; 20. a second transparent substrate; 30. a third transparent substrate; 40. a prism film; 50. a first light shielding unit; 60. a second light shielding unit; 70. a third light shielding unit; 80. a first adhesive layer; 90. a second adhesive layer; 100. a first light transmitting unit; 110. a second light transmitting unit; 120. and a third light transmitting unit.
Detailed Description
In order to make the present application solution better understood by those skilled in the art, the following description will be made in detail and with reference to the accompanying drawings in the embodiments of the present application, it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the embodiments of the present application described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Furthermore, the terms "mounted," "configured," "provided," "connected," "coupled," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in fig. 1-2, the present application relates to a privacy film and a display device. The privacy film includes: a first transparent substrate 10; a second transparent substrate 20 disposed opposite to the first transparent substrate 10; a third transparent substrate 30 disposed on the second transparent substrate 20 at a side far from the first transparent substrate 10; the first transparent substrate 10, the second transparent substrate 20 and the third transparent substrate 30 are bonded together through lamination, so that a peep-proof film main body frame rudiment is formed, other various components are conveniently added on the peep-proof film main body frame rudiment, and the effect of various functions is further realized. Preferably, the materials of the first transparent substrate 10, the second transparent substrate 20 and the third transparent substrate 30 include, but are not limited to, any one of PMMA, TAC, PET, COP, PP, TPU or PE; the effect of flexible selection can be achieved.
A prism film 40 having one side connected to the first transparent substrate 10 and the other side extending from the first transparent substrate 10 in a direction approaching the second transparent substrate 20; fixedly disposing the prism film 40 between the first transparent substrate 10 and the second transparent substrate 20 in a predetermined direction by means including, but not limited to, adhesive bonding; in the present application, the structural characteristics of the prism film 40 can be well utilized by vertically placing the prism film.
Specifically, the prism film 40 has a convergent viewing angle and increases the light intensity in the front viewing direction due to its structural characteristics, and generally, the brightness of the front viewing angle can be increased by more than 40%, and the convergent effect of the viewing angle is 20-35 degrees on each of the left and right sides when the prism is placed vertically, and the actual number is determined by the apex angle of the prism and the refractive index of the prism resin material, so that the light intensity penetrating through the angle above the range of angle is rapidly attenuated. As shown in FIG. 4, the prism structure films made of the materials with refractive indexes of 1.55 (I)/1.59 (II) are respectively vertically arranged to measure the light intensity trend diagrams of different visual angles.
A plurality of first light shielding units 50 disposed on the second transparent substrate 20 adjacent to one side of the prism film 40 at intervals; through being provided with a plurality of first light shielding unit 50 at the interval between prism film 40 and second transparent substrate 20, can realize prescribing a limit to the range of light to realize restricting the range angle of light into in predetermineeing, and then be convenient for follow-up other parts carry out the regulation effect of angle restriction. The material of the first light shielding unit 50 includes, but is not limited to, a light shielding material, and can be used for limiting and blocking incident light; the material of the first light shielding unit 50 is preferably opaque material such as black ink, gray ink, or white ink. Preferably, the plurality of first light shielding units 50 are arranged at equal intervals; the effect of uniformly adjusting the incident light can be achieved, thereby ensuring a good light path limiting effect. Further, the plurality of first light shielding units 50 are manufactured by inkjet printing.
The second light shielding units 60 are arranged between the second transparent substrate 20 and the third transparent substrate 30 at intervals, and are respectively arranged above the first light shielding units 50 in a one-to-one correspondence manner; by arranging a plurality of second light shielding units 60 at intervals between the second transparent base material 20 and the third transparent base material 30 and correspondingly arranging the plurality of first light shielding units 50 respectively, light rays with the angles of more than 20 degrees and about 35-40 degrees can be blocked, so that the angles of the light rays are further restrained; the material of the second light shielding unit 60 includes, but is not limited to, a light shielding material, and can achieve both limitation and blocking of incident light; the material of the second light shielding unit 60 is preferably opaque material such as black ink, gray ink, or white ink. Preferably, the plurality of second light shielding units 60 are arranged at equal intervals; the effect of uniform adjustment of the light can be achieved, thereby ensuring a good light path limiting effect. Further, the plurality of second light shielding units 60 are manufactured by inkjet printing.
The third light shielding units 70 are arranged on the third transparent substrate 30 far from the second transparent substrate 20 at intervals, and are respectively arranged above the second light shielding units 60 in a one-to-one correspondence manner; through being provided with a plurality of third light shielding unit 70 at the upper surface interval of third transparent substrate 30, and respectively with a plurality of second light shielding unit 60 corresponding setting, can realize further restriction to light, can block near 20 degrees light promptly to adjust the visual angle to required scope, and then realize good peep-proof effect. The material of the second light shielding unit 60 includes, but is not limited to, a light shielding material, and can achieve both limitation and blocking of incident light; the material of the third light shielding unit 70 is preferably opaque material such as black ink, gray ink, or white ink. Preferably, a plurality of third light shielding units 70 are arranged at equal intervals; the effect of uniform adjustment of the light can be achieved, thereby ensuring a good light path limiting effect. Further, the plurality of third light shielding units 70 are manufactured by inkjet printing.
Wherein the first light shielding unit 50, the second light shielding unit 60 and the third light shielding unit 70 are axially symmetrically arranged; by arranging the first light shielding unit 50, the second light shielding unit 60 and the third light shielding unit 70 from bottom to top, and arranging the corresponding three light shielding units in the vertical direction as a group, a mode of axisymmetric arrangement is adopted, so that adjustment and control on a plurality of angles of light rays can be realized, and the consistency and uniformity of light ray adjustment are ensured.
Specifically, the light shielding units disposed on the plurality of substrates above the prism film 40 can further converge the light intensity of the large viewing angle, thereby achieving the peep-proof effect. As shown in fig. 3, the half-intensity angle of the prism film 40 is 20-35 degrees, and the light intensity is reduced to be very small after the half-intensity angle exceeds 40 degrees, so that three layers of light shielding units are utilized, namely, the positions (1)/(2)/(3) in the figure are respectively utilized, firstly, the angle of the incident light is adjusted and controlled by a plurality of first light shielding units 50, and the first light shielding units 50 can not allow the light to pass through, so that the light can only pass through the adjacent light transmission areas, and the light can pass through according to the preset angle, thereby realizing the effect of restraining the light and further limiting the incident light range; secondly, the light is blocked by a plurality of second shading units 60, and the light with the angle of more than 20 degrees and about 35-40 degrees is blocked, so that the effects of re-restraining the light and controlling the angle are realized; finally, the light rays are blocked by the plurality of third shading units 70, and the light rays near 20 degrees are blocked, so that the effects of re-restraining the light rays and controlling the angles again are realized, and the required peep-proof angle with the visual angle of A degrees is further obtained. Meanwhile, as the bottom layer is of a prism structure, the product which passes through the angle A is bright and is higher than the product which does not use the prism structure. According to the above principle, by adjusting the sizes of the first light shielding unit 50, the second light shielding unit 60 and the third light shielding unit 70, it is possible to conveniently control a desired viewing angle, thereby achieving a good feedback effect; meanwhile, by adopting the structural form of the anti-peeping device, a good anti-peeping effect can be achieved, and a microstructure with a high depth-to-width ratio can be avoided, so that the difficulty and the production cost of a subsequent process are reduced, and the production efficiency is improved.
From the above description, it can be seen that the following technical effects are achieved:
in this embodiment of the present application, the manner of adding the prism film 40 and the plurality of light shielding units is adopted, through being provided with the multilayer light shielding units above the prism film 40, the purpose of converging the light intensity of a large viewing angle, controlling the viewing angle and preventing peeping is achieved, thereby the technical effect of avoiding using the microstructure with high aspect ratio is achieved, and further the technical problem that the existing peeping-proof film needs high aspect ratio for achieving a good peeping-proof angle, the microstructure design is often up to 10-30, such microstructure is very difficult in the hot-pressing transfer printing or photo-curing transfer printing process, has serious transfer printing rate or demolding problem, causes the cost of transfer printing materials or mold surface treatment to be expensive, or causes the transfer printing speed to be slow, and is unfavorable for the industrial roll-to-roll production efficiency.
Further, a first adhesive layer 80 is disposed between the second transparent substrate 20 and the prism film 40; by being provided with the first adhesive layer 80, a good adhesion and lamination effect can be achieved, thereby achieving a good fixed connection effect. Preferably, the first adhesive layer 80 is a liquid optical adhesive, an optical water adhesive or LOCA, and has good fluidity, is insensitive to ink thickness, and has good gap filling property.
Further, a second adhesive layer 90 is disposed between the second transparent substrate 20 and the third transparent substrate 30; through being provided with second tie coat 90, can realize good adhesion laminating effect to realize good fixed connection effect. Preferably, the second adhesive layer 90 is a liquid optical adhesive, an optical water adhesive or LOCA, and has good fluidity, is insensitive to ink thickness, and has good gap filling property.
Further, the thickness of the first adhesive layer 80 and the second adhesive layer 90 is 4-6 μm; can ensure under the prerequisite of firm connection, can also reduce the quantity of glue used, also can reduce the glue to the interference of light regulation to improve the precision of light control. Preferably, the thickness of the first adhesive layer 80 and the second adhesive layer 90 is 5 μm; good substrate bonding effect and effect of reducing interference to the optical path can be achieved.
Further, the width A1 of the first light shielding unit 50 is smaller than the width A2 of the second light shielding unit 60, and the width A2 of the second light shielding unit 60 is greater than or equal to the width A3 of the third light shielding unit 70; through setting up the light shielding unit of multiple width respectively, can realize adjusting the effect to light a plurality of angles respectively to realize nimble effect of adjusting and controlling light angle. Further, the width A1 of the first light shielding unit 50 is 5-10 μm, the width A2 of the second light shielding unit 60 is 10-25 μm, and the width A3 of the third light shielding unit 70 is 9.5-25 μm; through setting up the width in above-mentioned interval, can realize adjusting half side visual angle's effect to adjust to required visual angle according to the user demand.
Further, the width of the first light shielding unit 50 is A1, the width of the second light shielding unit 60 is A2, and the width of the third light shielding unit 70 is A3, wherein the ratio interval of the width A3 of the third light shielding unit 70 to the width A2 of the second light shielding unit 60 is: the ratio of the width A1 of the first light shielding unit 50 to the width A2 of the second light shielding unit 60 is 0.95-1/A3-2-1: a2 Not less than 2A1; through adopting above-mentioned proportional relation formula with the width relation of A1, A2 and A3, can obtain good peep-proof angle, through adjusting one of them width numerical value, other two numerical values also take place the proportion change simultaneously to realize the effect of light exit angle adjustment, and then realize setting to required light angle according to the demand of use occasion.
Further, a first light transmitting unit 100 is formed between adjacent first light shielding units 50, a second light transmitting unit 110 is formed between adjacent second light shielding units 60, and a third light transmitting unit 120 is formed between adjacent third light shielding units 70; good light penetration effect can be realized, and meanwhile, light can pass through according to a preset position. Further, the width B of the first light-transmitting unit 100 is 35-40 μm; the effect of penetration of the incident light in this interval can be achieved.
Further, the ratio of the width B of the first light-transmitting unit 100 to the width A1 of the first light-shielding unit 50 is B/A1 < 10; good effect of the angle constraint of the incident light can be achieved, thereby obtaining the incident light of a desired range.
Further, the width of the first light shielding unit 50 is A1 and the thickness of the second transparent substrate 20 is C1, wherein the ratio of the thickness C1 of the second transparent substrate 20 to the width A1 of the first light shielding unit 50 is: C1/A1 is less than or equal to 5; further, the thickness of the third transparent substrate 30 is C2, and the ratio of the thickness C2 of the third transparent substrate 30 to the thickness C1 of the second transparent substrate 20 is: C2/C1 is less than or equal to 2; the light path can be constrained, so that the accuracy of the angle of the emergent light is ensured.
Further, the thicknesses of the first adhesive layer 80, the second adhesive layer 90, and the third light shielding unit 70 are less than 10 μm; good light passing effect can be ensured and light loss can be reduced. Preferably, the thicknesses of the first adhesive layer 80, the second adhesive layer 90, and the third light shielding unit 70 are 5 μm.
The specific examples are further described:
examples
As shown in fig. 1, a third light shielding unit 70, a third transparent substrate 30, a second light shielding unit 60, a second transparent substrate 20, a first light shielding unit 50, a prism film 40 and a first transparent substrate 10 are sequentially arranged from top to bottom, wherein the first light shielding unit 50, the second light shielding unit 60 and the third light shielding unit 70 are arranged in a axisymmetric manner, and the thicknesses of the first adhesive layer 80, the second adhesive layer 90 and the third light shielding unit 70 are all 5 μm;
the width A1 of the first light shielding unit 50 is 5 μm, the width A2 of the second light shielding unit 60 is 10 μm, the width A3 of the third light shielding unit 70 is 9.5 μm, the width B of the first light transmitting unit 100 is 50 μm, the thickness C1 of the second transparent substrate 20 is 25 μm, the thickness C2 of the third transparent substrate 30 is 50 μm, and the final half-side viewing angle θ is about 28 degrees after the incident light is adjusted by the prism film 40 and the plurality of light shielding units.
Examples
As shown in fig. 6, embodiment 2 is different from embodiment 1 in that the width A3 of the third light shielding unit 70 is 11 μm, and the final half-side viewing angle θ is about 27.6 degrees after the incident light is adjusted by the prism film 40 and the plurality of light shielding units.
Examples
As shown in fig. 7, embodiment 3 is different from embodiment 1 in that the width A3 of the third light shielding unit 70 is 10 μm, and the final half-side viewing angle θ is about 27.8 degrees after the incident light is adjusted by the prism film 40 and the plurality of light shielding units.
Examples
As shown in fig. 8, embodiment 4 is different from embodiment 1 in that the width A2 of the second light shielding unit 60 is 20 μm, the width A3 of the third light shielding unit 70 is 19 μm, and the final half-side viewing angle θ is about 25.5 degrees after the incident light is adjusted by the prism film 40 and the plurality of light shielding units.
Examples
As shown in fig. 9, embodiment 5 is different from embodiment 1 in that the width A2 of the second light shielding unit 60 is 20 μm, the width A3 of the third light shielding unit 70 is 22 μm, and the final half-side viewing angle θ is about 24.8 degrees after the incident light is adjusted by the prism film 40 and the plurality of light shielding units.
Examples
As shown in fig. 10, embodiment 6 is different from embodiment 1 in that the width A2 of the second light shielding unit 60 is 20 μm, the width A3 of the third light shielding unit 70 is 20 μm, and the final half-side viewing angle θ is about 25.3 degrees after the incident light is adjusted by the prism film 40 and the plurality of light shielding units.
Examples
As shown in fig. 11, embodiment 7 is different from embodiment 1 in that the width A2 of the second light shielding unit 60 is 20 μm, the width A3 of the third light shielding unit 70 is 20 μm, the width B of the first light transmitting unit 100 is 35 μm, the thickness C1 of the second transparent substrate 20 and the thickness C2 of the third transparent substrate 30 are 23 μm, at this time, the final half-side viewing angle θ of the incident light after being adjusted by the prism film 40 and the plurality of light shielding units is about 24.3 degrees, the light has good constraint and peep-proof effects, and no light leakage or other conditions at other angles occur.
Examples
As shown in fig. 12, embodiment 8 is different from embodiment 1 in that the width A1 of the first light shielding unit 50 is 7.5 μm, the width A2 of the second light shielding unit 60 is 15 μm, and the width A3 of the third light shielding unit 70 is 14.25 μm, and the final half-side viewing angle θ of the incident light is about 27.4 degrees after the incident light is adjusted by the prism film 40 and the plurality of light shielding units.
Examples
As shown in fig. 13, embodiment 9 is different from embodiment 1 in that the width A1 of the first light shielding unit 50 is 7.5 μm, the width A2 of the second light shielding unit 60 is 15 μm, and the width A3 of the third light shielding unit 70 is 16.5 μm, and the final half-side viewing angle θ of the incident light is about 26.8 degrees after the incident light is adjusted by the prism film 40 and the plurality of light shielding units.
Examples
As shown in fig. 14, embodiment 10 is different from embodiment 1 in that the width A1 of the first light shielding unit 50 is 7.5 μm, the width A2 of the second light shielding unit 60 is 15 μm, and the width A3 of the third light shielding unit 70 is 15.5 μm, and the final half-side viewing angle θ of the incident light is about 27.1 degrees after the incident light is adjusted by the prism film 40 and the plurality of light shielding units.
Examples
As shown in fig. 15, embodiment 15 is different from embodiment 1 in that the width A1 of the first light shielding unit 50 is 10 μm, the width A2 of the second light shielding unit 60 is 20 μm, the width A3 of the third light shielding unit 70 is 19 μm, the width B of the first light transmitting unit 100 is 50 μm, the thickness C1 of the second transparent substrate 20 and the thickness C2 of the third transparent substrate 30 are 50 μm, and the final half-side viewing angle θ is about 21.6 degrees after the incident light is adjusted by the prism film 40 and the plurality of light shielding units.
Examples
As shown in fig. 16, embodiment 16 is different from embodiment 1 in that the width A1 of the first light shielding unit 50 is 10 μm, the width A2 of the second light shielding unit 60 is 20 μm, the width A3 of the third light shielding unit 70 is 22 μm, the width B of the first light transmitting unit 100 is 50 μm, the thickness C1 of the second transparent substrate 20 and the thickness C2 of the third transparent substrate 30 are 50 μm, and the final half-side viewing angle θ is about 20.9 degrees after the incident light is adjusted by the prism film 40 and the plurality of light shielding units.
Examples
As shown in fig. 17, embodiment 17 is different from embodiment 1 in that the width A1 of the first light shielding unit 50 is 10 μm, the width A2 of the second light shielding unit 60 is 20 μm, the width A3 of the third light shielding unit 70 is 20.5 μm, the width B of the first light transmitting unit 100 is 50 μm, the thickness C1 of the second transparent substrate 20 and the thickness C2 of the third transparent substrate 30 are 50 μm, and the final half-side viewing angle θ is about 21.3 degrees after the incident light is adjusted by the prism film 40 and the plurality of light shielding units.
Examples
As shown in fig. 18, embodiment 18 is different from embodiment 1 in that the width A1 of the first light shielding unit 50 is 10 μm, the width A2 of the second light shielding unit 60 is 20 μm, the width A3 of the third light shielding unit 70 is 20 μm, the width B of the first light transmitting unit 100 is 35 μm, the thickness C1 of the second transparent substrate 20 and the thickness C2 of the third transparent substrate 30 are 23 μm, and the final half-side viewing angle θ is about 26.2 degrees after the incident light is adjusted by the prism film 40 and the plurality of light shielding units.
Examples
As shown in fig. 19, embodiment 19 is different from embodiment 1 in that the width A1 of the first light shielding unit 50 is 10 μm, the width A2 of the second light shielding unit 60 is 25 μm, the width A3 of the third light shielding unit 70 is 25 μm, the width B of the first light transmitting unit 100 is 40 μm, the thickness C1 of the second transparent substrate 20 and the thickness C2 of the third transparent substrate 30 are 23 μm, and the final half-side viewing angle θ is about 28 degrees after the incident light is adjusted by the prism film 40 and the plurality of light shielding units.
Comparative example 1
As shown in fig. 13, the comparative example 1 is different from the example 1 in that the width A2 of the second light shielding unit 60 is 23 μm, the width A3 of the third light shielding unit 70 is 20 μm, the width B of the first light transmitting unit 100 is 35 μm, and the thickness C1 of the second transparent substrate 20 is 50 μm, and the final half-side viewing angle θ is about 13.4 degrees after the incident light is adjusted by the prism film 40 and the plurality of light shielding units.
Comparative example 2
As shown in fig. 14, the comparative example 2 is different from the example 1 in that the width A2 of the second light shielding unit 60 is 25 μm, the width A3 of the third light shielding unit 70 is 23 μm, the width B of the first light transmitting unit 100 is 40 μm, and the thickness C1 of the second transparent substrate 20 is 50 μm, and the final half-side viewing angle θ is about 15.1 degrees after the incident light is adjusted by the prism film 40 and the plurality of light shielding units.
Comparative example 3
As shown in fig. 15, the comparative example 3 is different from the example 1 in that the width A2 of the second light shielding unit 60 is 20 μm, the width A3 of the third light shielding unit 70 is 15 μm, the width B of the first light transmitting unit 100 is 35 μm, the thickness C1 of the second transparent substrate 20 is 50 μm, the thickness C2 of the third transparent substrate 30 is 23 μm, and the final half-side viewing angle θ is about 18.8 degrees after the incident light is adjusted by the prism film 40 and the plurality of light shielding units.
Comparative example 4
As shown in fig. 12, the comparative example 4 is different from the example 1 in that the width A2 of the second light shielding unit 60 is 20 μm, the width A3 of the third light shielding unit 70 is 20 μm, the width B of the first light transmitting unit 100 is 30 μm, the thickness C1 of the second transparent substrate 20 and the thickness C2 of the third transparent substrate 30 are 50 μm, and the final half-side viewing angle θ is about 11 degrees after the incident light is adjusted by the prism film 40 and the plurality of light shielding units.
Comparative example 5
As shown in fig. 13, the comparative example 5 is different from the example 1 in that the width A2 of the second light shielding unit 60 is 25 μm, the width A3 of the third light shielding unit 70 is 25 μm, the width B of the first light transmitting unit 100 is 40 μm, the thickness C1 of the second transparent substrate 20 is 50 μm, and the thickness C2 of the third transparent substrate 30 is 23 μm, and the final half-side viewing angle θ is about 18.8 degrees after the incident light is adjusted by the prism film 40 and the plurality of light shielding units.
The results of each example and comparative example are shown in table 1:
from the above test results, it can be seen that: 1. when the ratio relation in the invention is satisfied, the peep-proof effect of the peep-proof film is normal, and no abnormal problem exists.
2. When C1/A1 is not less than or equal to 5, θ is small but accompanied by a large-angle light leakage phenomenon.
The application also relates to a display device, which comprises a display panel and a peep-proof film arranged on one side of the display panel, wherein the peep-proof film is the peep-proof film.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the specific details of the above embodiments, and various equivalent changes can be made to the technical solutions of the present invention within the scope of the technical concept of the present invention, and these equivalent changes all fall within the scope of the present invention.
Claims (9)
1. Peep-proof film, its characterized in that includes:
a first transparent substrate (10);
a second transparent substrate (20) disposed opposite to the first transparent substrate (10);
a third transparent substrate (30) disposed on the second transparent substrate (20) on a side remote from the first transparent substrate (10);
a prism film (40) having one side connected to the first transparent substrate (10) and the other side extending from the first transparent substrate (10) in a direction approaching the second transparent substrate (20);
a plurality of first light shielding units (50) which are arranged on the second transparent base material (20) close to one side of the prism film (40) at intervals;
the second light shielding units (60) are arranged between the second transparent base material (20) and the third transparent base material (30) at intervals and are respectively and correspondingly arranged above the first light shielding units (50) one by one; a kind of electronic device with high-pressure air-conditioning system
The third light shielding units (70) are arranged on the third transparent base material (30) far away from one side of the second transparent base material (20) at intervals and are respectively and correspondingly arranged above the second light shielding units (60) one by one;
wherein the first light shielding unit (50), the second light shielding unit (60) and the third light shielding unit (70) are arranged in a axisymmetric manner;
the width of the first light shielding unit (50) is A1, the width of the second light shielding unit (60) is A2, the width of the third light shielding unit (70) is A3, and the ratio interval of the width A3 of the third light shielding unit (70) to the width A2 of the second light shielding unit (60) is: the ratio relation between the width A1 of the first light shielding unit (50) and the width A2 of the second light shielding unit (60) is that: a2 And is more than or equal to 2A1.
2. The privacy film of claim 1, wherein a first adhesive layer (80) is disposed between the second transparent substrate (20) and the prismatic film (40).
3. The privacy film of claim 2, wherein a second adhesive layer (90) is disposed between the second transparent substrate (20) and the third transparent substrate (30).
4. The privacy film of claim 1, wherein the first light shielding element (50) has a width A1 and the second transparent substrate (20) has a thickness C1, wherein the ratio of the thickness C1 of the second transparent substrate (20) to the width A1 of the first light shielding element (50) is in the range: C1/A1 is less than or equal to 5.
5. The privacy film of claim 1, wherein the width A1 of the first light shielding element (50) is 5-10 μm, the width A2 of the second light shielding element (60) is 10-25 μm, and the width A3 of the third light shielding element (70) is 9.5-25 μm.
6. The privacy film of claim 1, wherein a first light transmissive unit (100) is formed between adjacent first light shielding units (50), a second light transmissive unit (110) is formed between adjacent second light shielding units (60), and a third light transmissive unit (120) is formed between adjacent third light shielding units (70).
7. The privacy film of claim 6, wherein the width of the first light-transmitting unit (100) is B, and the ratio of the width B of the first light-transmitting unit (100) to the width A1 of the first light-shielding unit (50) is B/A1 < 10.
8. The privacy film of claim 4, wherein the thickness of the third transparent substrate (30) is C2, and the ratio of the thickness C2 of the third transparent substrate (30) to the thickness C1 of the second transparent substrate (20) is: C2/C1 is less than or equal to 2.
9. A display device, comprising a display panel and a peep-proof film arranged on one side of the display panel, wherein the peep-proof film is as set forth in any one of claims 1 to 8.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310513772.4A CN116224478B (en) | 2023-05-09 | 2023-05-09 | Peep-proof film and display device |
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| CN202310513772.4A CN116224478B (en) | 2023-05-09 | 2023-05-09 | Peep-proof film and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2003337224A (en) * | 2002-03-15 | 2003-11-28 | Sony Corp | Polarization beam conversion element, its manufacturing method and liquid crystal display device |
| KR20130078786A (en) * | 2011-12-30 | 2013-07-10 | 코오롱인더스트리 주식회사 | Composite optical sheet |
| CN104656180A (en) * | 2015-03-18 | 2015-05-27 | 京东方科技集团股份有限公司 | Polaroid, preparation method of polaroid and display device |
| CN210864100U (en) * | 2019-07-31 | 2020-06-26 | 北京京东方光电科技有限公司 | Peep-proof module and display device |
| CN110568641B (en) * | 2019-09-25 | 2022-02-22 | 京东方科技集团股份有限公司 | Peep-proof display device and peep-proof direction adjusting method thereof |
| CN212694100U (en) * | 2020-08-06 | 2021-03-12 | 昆山龙腾光电股份有限公司 | Peep-proof film and display device |
| CN115494667B (en) * | 2022-09-05 | 2024-04-12 | 武汉华星光电技术有限公司 | Peep-proof film and display device |
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