CN112965228B - Peep-proof film, display panel and display device - Google Patents
Peep-proof film, display panel and display device Download PDFInfo
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- CN112965228B CN112965228B CN202110297994.8A CN202110297994A CN112965228B CN 112965228 B CN112965228 B CN 112965228B CN 202110297994 A CN202110297994 A CN 202110297994A CN 112965228 B CN112965228 B CN 112965228B
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- 239000002131 composite material Substances 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims description 14
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 239000007769 metal material Substances 0.000 claims description 6
- 238000000605 extraction Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 8
- 239000012528 membrane Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 208000008918 voyeurism Diseases 0.000 description 2
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B17/00—Systems with reflecting surfaces, with or without refracting elements
- G02B17/004—Systems comprising a plurality of reflections between two or more surfaces, e.g. cells, resonators
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/12—Reflex reflectors
- G02B5/122—Reflex reflectors cube corner, trihedral or triple reflector type
- G02B5/124—Reflex reflectors cube corner, trihedral or triple reflector type plural reflecting elements forming part of a unitary plate or sheet
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Abstract
The invention relates to the technical field of display, and discloses a peep-proof film, a display panel and a display device, wherein the peep-proof film comprises a composite microstructure layer, the composite microstructure layer comprises a grating structure, the grating structure comprises a plurality of light-emitting channels, and the periphery sides of the light-emitting channels are provided with a first inner wall and a second inner wall which are oppositely arranged; the first inner wall is provided with a plurality of first microstructure bulges facing the second inner wall, the second inner wall is provided with a plurality of second microstructure bulges facing the first inner wall, the first microstructure bulges are provided with first reflection inclined planes facing the light inlet side of the light outlet channel, and the second microstructure bulges are provided with second reflection inclined planes which are deviated from the light inlet side of the light outlet channel and are opposite to the first reflection inclined planes; relative to a plane perpendicular to the axial lead of the light outlet channel, the included angle between the first reflection inclined plane and the plane is larger than that between the second reflection inclined plane and the plane. The peep-proof film can play a good peep-proof role, effectively improves the light utilization rate, improves the light extraction rate and improves the display brightness.
Description
Technical Field
The invention relates to the technical field of display, in particular to a peep-proof film, a display panel and a display device.
Background
Present peep-proof shows product, no matter directly increase the peep-proof membrane material on the product is shaded, still adopt other peep-proof means, all adopt the material that can block light, if nanometer black grating etc. restrict the angle that jets out of light, however, to present peep-proof membrane material, the light of following the backlight outgoing can be divided into two parts, partly jets out to the module surface, the visual part of people's eye promptly, partly is absorbed by the material that plays the peep-proof function in the peep-proof membrane material, in view of partly light by reflection and absorptive loss, present peep-proof means can lead to module luminance to reduce about 40%, lead to unable satisfying customer's demand.
Disclosure of Invention
The invention discloses a peep-proof film, a display panel and a display device.
In order to achieve the purpose, the invention provides the following technical scheme:
a privacy film comprising:
the composite microstructure layer comprises a grating structure, the grating structure comprises a plurality of first gratings which are sequentially arranged, a light-emitting channel corresponding to the sub-pixels in the row direction of the display panel is formed between every two adjacent first gratings, and the peripheral side of the light-emitting channel is provided with a first inner wall and a second inner wall which are oppositely arranged; the first inner wall is provided with a plurality of first microstructure bulges which are arranged along the extension direction of the axis of the light outlet channel towards the second inner wall, the second inner wall is provided with a plurality of second microstructure bulges which are arranged along the extension direction of the axis of the light outlet channel towards the first inner wall, the first microstructure bulges are provided with a first reflection inclined plane which faces the light inlet side of the light outlet channel, the second microstructure bulges are provided with a second reflection inclined plane which deviates from the light inlet side of the light outlet channel and is opposite to the first reflection inclined plane, and the second reflection inclined plane is matched with the first reflection inclined plane and forms a light reflection channel so as to emit light;
relative to a plane perpendicular to an axial lead of the light outlet channel, an included angle between the first reflection inclined plane and the plane is larger than an included angle between the second reflection inclined plane and the plane.
The peep-proof film comprises a composite microstructure layer, the composite microstructure layer comprises a grating structure, the grating structure comprises a plurality of first gratings which are sequentially arranged, light-emitting channels which correspond to sub-pixels in the row direction of a display panel one by one are formed between every two adjacent first gratings, a first inner wall and a second inner wall which are oppositely arranged are arranged on the peripheral side of each light-emitting channel, a plurality of first microstructure bulges which are arranged along the extending direction of the axial lead of the light-emitting channels are arranged on the surface of the first inner wall, the first microstructure bulges can be in a strip shape, the first microstructure bulges can extend along the direction which is parallel to the light-in surface of the grating structure and vertical to the light-emitting channels, and the first microstructure bulges are provided with first reflecting inclined surfaces facing the light-in side of the light-emitting channels; the surface of the second inner wall is provided with a plurality of second microstructure bulges arranged along the extending direction of the axial lead of the light-emitting channel, the first microstructure bulges are micron-sized bulges, the second microstructure bulges can be strip-shaped, the second microstructure bulges can extend along the direction parallel to the light-in surface of the grating structure and perpendicular to the light-emitting channel, the second microstructure bulges are provided with second reflection inclined surfaces deviating from the light-in side of the light-emitting channel, the second microstructure bulges are micron-sized bulges, the second reflection inclined surfaces face the light-emitting side of the light-emitting channel and are opposite to the first reflection inclined surfaces, the first reflection inclined surfaces and the second reflection inclined surfaces are matched, light entering from the light-in side can be emitted after being reflected by the first reflection inclined surfaces and the second reflection inclined surfaces, the light utilization rate is improved, the light-emitting rate is improved, the display brightness of the display panel can be effectively improved, and relative to a plane perpendicular to the light-emitting channel, the included angle between the first reflection inclined surfaces and the plane is larger than that between the second reflection inclined surfaces and the plane, the angle when light is emitted can be reduced, and the light-emitting effect is achieved.
The included angle between the first reflection inclined plane and the plane is an angle formed between the first reflection inclined plane and the plane, which is smaller than or equal to 90 °; the included angle between the second reflecting inclined plane and the plane is an angle which is formed between the second reflecting inclined plane and the plane and is less than or equal to 90 degrees.
Therefore, in the peep-proof film, the light reflection channel is formed by utilizing the matching reflection of the first reflection inclined plane and the second reflection inclined plane, so that a good peep-proof effect can be achieved, the light utilization rate can be effectively improved, the light extraction rate is improved, and the display brightness is improved.
Optionally, the grating structure further includes a plurality of second gratings arranged in sequence, the second gratings intersect with the first gratings, and sub light-emitting channels corresponding to sub pixels of the display panel one to one are formed between the second gratings and the first gratings; the peripheral side of the sub light-emitting channel further comprises a third inner wall and a fourth inner wall which are oppositely arranged, the third inner wall faces the surface of the fourth inner wall and the first inner wall faces the surface of the second inner wall has the same structure, and the fourth inner wall faces the surface of the third inner wall and the second inner wall faces the surface of the first inner wall has the same structure.
Optionally, a first total reflection layer is formed on a surface of the first reflection inclined plane.
Optionally, a second total reflection layer is formed on a surface of the second reflection inclined plane.
Optionally, an included angle between the first reflection inclined plane and the plane is greater than or equal to 30 ° and less than or equal to 80 °.
Optionally, an included angle between the second reflection inclined plane and the plane is greater than or equal to 20 ° and less than or equal to 80 °.
Optionally, the material of the first total reflection layer comprises a reflective metal material; and/or the material of the second total reflection layer comprises a reflective metal material.
Optionally, the privacy film further includes a reverse prism layer disposed on the light exit side of the composite microstructure layer.
The invention also provides a display panel which comprises any one of the peep-proof films provided by the technical scheme.
The invention also provides a display device which comprises any one display panel provided by the technical scheme.
Drawings
Fig. 1 is a schematic structural diagram of a peep-proof membrane provided in an embodiment of the present invention;
fig. 2 is a schematic partial structure diagram of a composite microstructure layer according to an embodiment of the present invention;
fig. 3 is a schematic diagram of light reflection of a first reflection slope and a second reflection slope in a composite microstructure layer according to an embodiment of the present invention;
an icon: 1-a composite microstructure layer; 2-an inverse prism layer; 11-a grating structure; 12-a light-emitting channel; 13-a first inner wall; 13-a second inner wall; 131-first microstructure protrusions; 141-second microstructure projections; 1311 — a first reflective slope; 1411-second reflective slope.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, 2, and 3, embodiments of the present invention provide a privacy film comprising: the display panel comprises a composite microstructure layer 1, wherein the composite microstructure layer 1 comprises a grating structure 11, the grating structure 11 comprises a plurality of first gratings which are sequentially arranged, a light-emitting channel 12 corresponding to a sub-pixel in the row direction of the display panel is formed between every two adjacent first gratings, and the peripheral side of the light-emitting channel 12 is provided with a first inner wall 13 and a second inner wall 14 which are oppositely arranged; the first inner wall 13 has a plurality of first microstructure protrusions 131 arranged along the extending direction of the axis of the light-emitting channel 12 facing the second inner wall 14, the second inner wall 14 has a plurality of first microstructure protrusions 141 arranged along the extending direction of the axis of the light-emitting channel 12 facing the first inner wall 13, the first microstructure protrusions 131 have a first reflection inclined surface 1311 facing the light-incident side of the light-emitting channel 12, the first microstructure protrusions 141 have a second reflection inclined surface 1411 facing the first reflection inclined surface 1311 and deviating from the light-incident side of the light-emitting channel 12, and the second reflection inclined surface 1411 cooperates with the first reflection inclined surface 1311 to form a light reflection channel for emitting light; relative to a plane perpendicular to the axis of the light-emitting channel 12, the included angle between the first reflecting inclined plane 1311 and the plane is larger than the included angle between the second reflecting inclined plane 1411 and the plane.
The peep-proof film comprises a composite microstructure layer 1, wherein the composite microstructure layer 1 comprises a grating structure 11, the grating structure 11 comprises a plurality of first gratings which are sequentially arranged, light-emitting channels 12 which correspond to sub-pixels in the row direction of a display panel one by one are formed between every two adjacent first gratings, a first inner wall 13 and a second inner wall 14 which are oppositely arranged are arranged on the peripheral side of each light-emitting channel 12, a plurality of first microstructure protrusions 131 which are arranged along the extension direction of the axial lead of the light-emitting channels 12 are arranged on the surface of the first inner wall 13, the first microstructure protrusions 131 can be in a strip shape, the first microstructure protrusions 131 can extend along the direction which is parallel to the light-in surface of the grating structure 11 and is vertical to the light-emitting channels 12, and the first microstructure protrusions 131 are provided with first reflection inclined surfaces 1311 which face the light-in side of the light-emitting channels 12; the surface of the second inner wall 14 is provided with a plurality of first microstructure protrusions 141 arranged along the extending direction of the axis line of the light-emitting channel 12, the first microstructure protrusions 131 are micron-sized protrusions, the first microstructure protrusions 141 may be strip-shaped, and the first microstructure protrusions 141 may extend in a direction parallel to the light-incident surface of the grating structure 11 and perpendicular to the light-emitting channel 12, the first microstructure protrusions 141 have a second reflection slope 1411 deviating from the light-incident side of the light-emitting channel 12, the first microstructure protrusions 141 are micron-sized protrusions, the second reflection slope 1411 faces the light-emitting side of the light-emitting channel 12 and is opposite to the first reflection slope 1311, the first reflection slope 1311 and the second reflection slope 1 cooperate to emit light after being reflected by the first reflection slope 1311 and the second reflection slope 1411, so as to improve the light utilization rate, effectively improve the display brightness of the display panel, and, relative to a plane perpendicular to the light-emitting channel 12, an included angle a between the first reflection slope 1311 and the plane is greater than an included angle b between the second reflection slope and the plane, when the light-emitting slope is a normal of the reflection slope, an incident angle of the light-emitting structure is small as shown in the incident angle of the grating structure, when the incident angle of the emergent light-emitting slope, the incident angle of the light-emitting structure is small as shown in the incident angle of the second reflection slope, and the incident angle of the grating structure, and the incident angle of the incident light-emitting grating structure is small incident angle of the incident angle.
The angle between the first reflecting inclined plane 1311 and the plane is an angle formed by the first reflecting inclined plane 1311 and the plane, which is not more than 90 °; the angle between the second reflecting slope 1411 and the plane is an angle formed between the second reflecting slope 1411 and the plane, which is less than or equal to 90 °.
Therefore, in the privacy film, the light reflection channel is formed by the cooperative reflection of the first reflection slope 1311 and the second reflection slope 1411, so that a good privacy effect can be achieved, the light utilization rate can be effectively improved, the light extraction rate can be improved, and the display brightness can be improved.
Specifically, the grating structure further comprises a plurality of second gratings which are sequentially arranged, the second gratings are intersected with the first gratings, and sub light-emitting channels which are in one-to-one correspondence with sub pixels of the display panel are formed between the second gratings and the first gratings; the peripheral sides of the sub light-emitting channels further comprise a third inner wall and a fourth inner wall which are oppositely arranged, the surface of the third inner wall facing the fourth inner wall is the same as the surface of the first inner wall facing the second inner wall in structure, and the surface of the fourth inner wall facing the third inner wall is the same as the surface of the second inner wall facing the first inner wall in structure. Specifically, the sub-pixels are rectangular, the sub-light-emitting channels formed may be rectangular, four side walls surrounding the side of the sub-light-emitting channels are provided, and then two pairs of opposing inner walls, where one pair of inner walls extending in the row direction is formed by a first grating, and is a first inner wall and a second inner wall, and the inner walls extending in the column direction are formed by a second grating, and are a third inner wall and a fourth inner wall, where a structure of a surface of the third inner wall is the same as a structure of a surface of the first inner wall, a structure of a surface of the fourth inner wall is the same as a structure of a surface of the second inner wall, and then the third inner wall has a first reflection slope facing the light-entering side of the sub-light-emitting channels, and a second reflection slope is formed on the fourth inner wall, and is formed on the fourth inner wall and deviates from the light-entering side of the light-emitting channels and is opposite to the first reflection slope on the third inner wall, and a cooperation between the third inner wall and the fourth inner wall can also have an anti-peeping effect, and have an improved light utilization ratio, and an improved anti-peeping effect, and an improved display panel in the display direction.
Specifically, in the privacy film, the first total reflection layer is formed on the surface of the first reflection inclined plane 1311, and the first total reflection layer is disposed on the surface of the first reflection inclined plane 1311, so that the light reflection efficiency can be improved, the light utilization rate can be further improved, and the light extraction rate can be improved. Specifically, a film layer may be additionally disposed on the surface of the first reflective inclined plane 1311 to form the first total reflection layer, or the surface of the first reflective inclined plane 1311 may be directly prepared to form a total reflection surface, so that the surface portion of the first reflective inclined plane 1311 forms the first total reflection layer; the formation of the first total reflection layer may be specifically set according to actual requirements, and this embodiment is not limited.
Specifically, in the privacy film, a second total reflection layer is formed on the surface of the second reflection slope 1411. The second total reflection layer is disposed on the surface of the second reflection inclined plane 1411, so that the light reflection efficiency can be improved, the light utilization rate can be further improved, and the light extraction rate can be improved. Specifically, a film layer may be additionally disposed on the surface of the second reflective inclined plane 1411 to form the second total reflection layer, or the surface of the second reflective inclined plane 1411 may be directly prepared to form a total reflection surface, so that the surface portion of the second reflective inclined plane 1411 forms the second total reflection layer; the formation of the second total reflection layer may be specifically set according to actual requirements, and this embodiment is not limited.
Specifically, in the privacy film, an included angle between the first reflection inclined plane 1311 and the plane is greater than or equal to 30 ° and less than or equal to 80 °; the included angle between the second reflecting slope 1411 and the plane is greater than or equal to 20 ° and less than or equal to 80 °. The inclined angles of the first reflecting inclined plane 1311 and the second reflecting inclined plane 1411 are selected in a proper range, so that the light utilization rate can be better improved, and the light extraction efficiency is improved; specifically, the included angle of the first reflection inclined surface 1311 and the plane may be set to 40 °, 45 °, 50 °, 55 °, or 60 °; the included angle between the second reflection inclined plane 1411 and the plane is set to be 35 °, 40 °, 45 °, 50 ° or 55 °, and as long as the included angle between the first reflection inclined plane 1311 and the plane is greater than the included angle between the second reflection inclined plane 1411 and the plane, the matching of the included angle between the first reflection inclined plane 1311 and the plane and the included angle between the second reflection inclined plane 1411 and the plane may be set according to requirements, which is not limited in this embodiment.
Specifically, in the privacy film, the material of the first total reflection layer includes a reflective metal material; and/or the material of the second total reflection layer includes a reflective metal material, and the material of the first total reflection layer and the material of the second total reflection layer may also be other total reflection materials, which is not limited in this embodiment.
Specifically, the peep-proof film further comprises a reverse prism layer 2 arranged on the light-emitting side of the composite microstructure layer 1. The surface of the light-emitting side of the composite microstructure layer 1 is provided with the inverse prism layer 2 which can be matched with the composite microstructure layer 1, so that better light-emitting effect is achieved, and the peep-proof effect is improved.
The invention also provides a display panel which comprises any one of the peep-proof films provided by the embodiments. The peep-proof film is attached to the light-emitting surface of the display panel, so that a good peep-proof effect can be achieved, the peep-proof film has a high light utilization rate, the light-emitting rate is improved, and the display brightness is favorably improved.
The invention also provides a display device which comprises any one of the display panels provided in the above embodiments.
It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A privacy film, comprising:
the composite microstructure layer comprises a grating structure, the grating structure comprises a plurality of first gratings which are sequentially arranged, a light-emitting channel corresponding to the sub-pixels in the row direction of the display panel is formed between every two adjacent first gratings, the vertical section of the light-emitting channel is rectangular, and the periphery of the light-emitting channel is provided with a first inner wall and a second inner wall which are oppositely arranged; the first inner wall is provided with a plurality of first microstructure bulges which are arranged along the extension direction of the axial lead of the light outlet channel towards the second inner wall, the second inner wall is provided with a plurality of second microstructure bulges which are arranged along the extension direction of the axial lead of the light outlet channel towards the first inner wall, the first microstructure bulges are provided with first reflection inclined planes which are arranged towards the light inlet side of the light outlet channel, the second microstructure bulges are provided with second reflection inclined planes which are deviated from the light inlet side of the light outlet channel and are opposite to the first reflection inclined planes, and the second reflection inclined planes are matched with the first reflection inclined planes and form a light reflection channel so as to enable light to be emitted;
relative to a plane perpendicular to an axial lead of the light outlet channel, an included angle between the first reflection inclined plane and the plane is larger than an included angle between the second reflection inclined plane and the plane.
2. The privacy film of claim 1, wherein the grating structure further comprises a plurality of second gratings arranged in sequence, the second gratings intersect with the first gratings, and sub light-emitting channels corresponding to sub-pixels of the display panel one to one are formed between the second gratings and the first gratings; the peripheral side of the sub light-emitting channel further comprises a third inner wall and a fourth inner wall which are oppositely arranged, the third inner wall faces the surface of the fourth inner wall and the first inner wall faces the surface of the second inner wall has the same structure, and the fourth inner wall faces the surface of the third inner wall and the second inner wall faces the surface of the first inner wall has the same structure.
3. The privacy film of claim 1, wherein a first total reflection layer is formed on a surface of the first reflection slope.
4. The privacy film of claim 3, wherein a second total reflection layer is formed on the surface of the second reflective slope.
5. The privacy film of claim 1, wherein the first reflective slope makes an angle with the plane of 30 ° or more and 80 ° or less.
6. The privacy film of claim 1, wherein the second reflective slope makes an angle with the plane of 20 ° or more and 80 ° or less.
7. The privacy film of claim 4, wherein the material of the first total reflection layer comprises a reflective metal material; and/or the material of the second total reflection layer comprises a reflective metal material.
8. The privacy film of claim 1, further comprising a reverse prism layer disposed on the light exit side of the composite microstructure layer.
9. A display panel comprising the privacy film of any one of claims 1-8.
10. A display device comprising the display panel according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110297994.8A CN112965228B (en) | 2021-03-19 | 2021-03-19 | Peep-proof film, display panel and display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110297994.8A CN112965228B (en) | 2021-03-19 | 2021-03-19 | Peep-proof film, display panel and display device |
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| Publication Number | Publication Date |
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| CN112965228A CN112965228A (en) | 2021-06-15 |
| CN112965228B true CN112965228B (en) | 2023-01-31 |
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| CN202110297994.8A Active CN112965228B (en) | 2021-03-19 | 2021-03-19 | Peep-proof film, display panel and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113871549B (en) | 2021-09-24 | 2022-11-08 | 深圳市华星光电半导体显示技术有限公司 | OLED display panel |
| CN114859452B (en) * | 2022-05-23 | 2024-04-09 | 昆山国显光电有限公司 | Peep-proof assembly, display module and manufacturing method of display module |
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