CN210323675U - Peep-proof adhesive film, peep-proof polaroid and display panel - Google Patents
Peep-proof adhesive film, peep-proof polaroid and display panel Download PDFInfo
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- CN210323675U CN210323675U CN201921061038.4U CN201921061038U CN210323675U CN 210323675 U CN210323675 U CN 210323675U CN 201921061038 U CN201921061038 U CN 201921061038U CN 210323675 U CN210323675 U CN 210323675U
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Abstract
The embodiment of the utility model discloses peep-proof pad pasting, peep-proof polaroid and display panel. The peep-proof polaroid comprises a polarizing layer, a protective layer attached to the surface of the polarizing layer, an adhesive layer and a peep-proof module, wherein the peep-proof module is positioned above the polarizing layer; the peep-proof module comprises a prism structure, and the prism structure is used for gathering light penetrating through the prism structure so as to realize peep-proof. The embodiment of the utility model provides a have better narrow visual angle effect and better peep-proof effect, and have more extensive applicable environment, still effective under the low light level environment.
Description
Technical Field
The utility model relates to a show technical field, in particular to peep-proof pad pasting, peep-proof polaroid and display panel.
Background
A Liquid Crystal Display (LCD) has advantages of good picture quality, small size, light weight, low driving voltage, low power consumption, no radiation, and relatively low manufacturing cost, and is dominant in the field of flat panel displays.
With the continuous progress of the liquid crystal display technology, the viewing angle of the display has been widened from about 120 ° to over 160 °, and people want to effectively protect business confidentiality and personal privacy while enjoying visual experience brought by a large viewing angle, so as to avoid business loss or embarrassment caused by the leakage of screen information. Therefore, the liquid crystal display device is often required to have a peep-proof function to ensure information privacy. At present, there are several ways to realize peep prevention of a display device.
The first method is realized by attaching a shutter shielding film on a display screen, and the viewing angle can be reduced by shielding the screen by using the shutter shielding film. However, this method has a relatively complicated structure and reduces the brightness of the screen.
The second is to use a material that has its own light absorbing properties to achieve privacy. The peep-proof effect of the mode is often poor, and the cost is higher.
The third is to apply a vertical electric field to liquid crystal molecules using a viewing angle control electrode on one side of a color filter substrate (CF) to realize a narrow viewing angle. This peep-proof technique has a relatively complicated structure and a relatively high cost.
Therefore, a peep-proof display product with a simple structure is needed in the market at present.
SUMMERY OF THE UTILITY MODEL
In view of the above problem, an object of the present invention is to provide a peep-proof adhesive film, a peep-proof polarizer and a display panel, thereby providing a peep-proof structure with simple structure and good peep-proof effect.
According to the utility model discloses an aspect provides a peep-proof pad pasting, including peep-proof module, the viscose layer that top-down set gradually and peel off when the peep-proof pad pasting is laminated from the type rete, peep-proof module includes the prism structure, the prism structure is used for the light gathering that will see through it to realize the peep-proof.
According to another aspect of the present invention, there is provided a peep-proof polarizer, comprising a polarizing layer, a protective layer attached to the surface of the polarizing layer, an adhesive layer, and a peep-proof module, wherein the peep-proof module is located above the polarizing layer; the peep-proof module comprises a prism structure, and the prism structure is used for gathering light penetrating through the prism structure so as to realize peep-proof.
Preferably, the privacy module is located above the polarizing layer.
Preferably, the privacy module comprises: the prism lamella, the prism lamella includes the prism structure, wherein, the prism structure includes a plurality of sub-prisms, the width of sub-prism cross section reduces from bottom to top in proper order.
Preferably, the sub-prisms are micro triangular prisms, and a plurality of the micro triangular prisms are arranged in parallel.
Preferably, the prism sheet layer includes: the first prism sheet comprises a plurality of miniature triangular prisms which are arranged on the surface of the first prism sheet and are arranged in parallel along a first direction; and the second prism sheet is positioned below the first prism sheet and comprises a plurality of miniature triangular prisms which are arranged on the surface of the second prism sheet and are arranged in parallel along a second direction.
Preferably, the prism sheet layer includes: the first prism group is positioned on the upper surface of the prism sheet layer and comprises a plurality of miniature triangular prisms which are arranged in parallel along a first direction; and the second prism group is positioned on the lower surface of the prism sheet layer and comprises a plurality of miniature triangular prisms which are arranged in parallel along a second direction.
Preferably, the privacy module comprises: and the diffusion layer is positioned on the surface of the prism structure and used for shielding the prism structure.
Preferably, the privacy module comprises: and the protective layer is positioned on the surface of the peep-proof module and used for protecting the peep-proof module.
According to another aspect of the present invention, there is provided a display panel including the privacy polarizer as described above.
According to the utility model discloses peep-proof pad pasting, peep-proof polaroid and display panel utilize prism structure's spotlight principle, gather the light that sees through it, make the light shrink in littleer visual angle, the embodiment of the utility model provides a have better narrow visual angle effect and better peep-proof effect, and have more extensive applicable environment, still effective under the low light level environment.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:
fig. 1 shows a schematic cross-sectional view of a display panel according to an embodiment of the invention;
fig. 2 shows a schematic cross-sectional view of a privacy polarizer according to another embodiment of the present invention;
fig. 3 shows a schematic perspective view of a privacy polarizer according to another embodiment of the present invention;
fig. 4 shows a schematic diagram of an optical path of light through a prism layer of a privacy polarizer according to another embodiment of the present invention;
fig. 5 shows a schematic perspective view of a display panel according to another embodiment of the present invention;
fig. 6 shows a schematic cross-sectional view of a privacy film according to another embodiment of the present invention;
description of the reference numerals
11-lower polarizer 12-liquid crystal layer 13-upper polarizer 14-prism layer
131-release film layer 132-adhesive layer 133-protective layer 134-polarizing layer
15-diffusion layer 16-protective film 141-first prism sheet 142-second prism sheet
17-backlight module
Detailed Description
Various embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Like elements in the various figures are denoted by the same or similar reference numerals. For purposes of clarity, the various features in the drawings are not necessarily drawn to scale. Moreover, certain well-known elements may not be shown in the figures.
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. Numerous specific details of the invention, such as structure, materials, dimensions, processing techniques and techniques of components, are set forth in the following description in order to provide a more thorough understanding of the invention. However, as will be understood by those skilled in the art, the present invention may be practiced without these specific details.
It will be understood that when a layer, region or layer is referred to as being "on" or "over" another layer, region or layer in describing the structure of the component, it can be directly on the other layer, region or layer or intervening layers or regions may also be present. Also, if the component is turned over, one layer or region may be "under" or "beneath" another layer or region.
Fig. 1 shows a schematic cross-sectional view of a display panel according to an embodiment of the present invention. As shown in fig. 1, the display panel includes a lower polarizer 11, a liquid crystal layer 12, an upper polarizer 13, and a prism layer 14, which are sequentially stacked from bottom to top.
The lower polarizer 11 and the upper polarizer 13 are for transmitting polarized light of a specific direction. The directions of polarized light allowed to pass through by the lower polarizer 11 and the upper polarizer 13 are perpendicular to each other. The liquid crystal layer 12 serves to change the arrangement of liquid crystal molecules in the presence of an electric field to control the polarization direction of polarized light transmitted therethrough. The light sequentially passes through the lower polarizer 11, the liquid crystal layer 12, and the upper polarizer 13 to perform display of an image.
The prism layer 14 is located above the upper polarizer 13, the prism layer 14 includes a plurality of micro triangular prism structures arranged in parallel, and the prism layer 14 (micro triangular prism structures) has a light condensing effect. The light passing through the upper polarizer 13 enters the prism layer 14 at a certain divergence angle, and is condensed by the prism layer 14, so that the light is contracted within a smaller viewing angle, and the peep-proof effect is realized.
The above is only a simple description of the display panel according to an embodiment of the present invention, and the specific display panel may be at least one display panel selected from a group consisting of an stn (super featured chemical) display, a gf (glass Film color) display, a tft (thin Film transistor) display, a tfd (thin Film diode) display, and an oled (organic light emitting display).
Fig. 2 shows a schematic cross-sectional view of a privacy polarizer according to another embodiment of the present invention. As shown in fig. 2, the privacy polarizer includes an upper polarizer 13, a prism layer 14, a diffusion layer 15, and a protective film 16, which are sequentially stacked from bottom to top. The upper polarizer 13 is an optical film formed by compounding multiple layers of polymer materials and having a function of generating polarized light, and includes a release film layer 131, an adhesive layer 132, a protective layer 133, and a polarizing layer 134 stacked in sequence from bottom to top.
The polarizing layer 134 is also called a polarizing original film, is a main part of the upper polarizer 13, and is made of, for example, a PVA (polyvinyl alcohol) film by dyeing and stretching. The polarizing layer 134 affects the polarizing performance, transmittance, color tone, optical durability, and the like of the upper polarizer 13.
The protective layer 133 is located under the polarizing layer 134 and directly attached to the polarizing layer 134. The protective layer 133 serves to insulate moisture and air and protect the polarizing layer 134. The protective layer 133 is, for example, a TAC (cellulose triacetate) film, and has good transparency and optical uniformity.
The adhesive layer 132 is located between the protective layer 133 and the release film layer 131, and is used for bonding the release film layer 131 on the protective layer 133. The adhesive layer 132 affects the adhesion performance and the mounting processability of the upper polarizer 13, and the adhesive layer 132 is a pressure sensitive adhesive, for example.
The release film layer 131, also called a release film, is located below the adhesive layer 132 to protect the adhesive layer 132. The release film layer 131 is, for example, a PET (ethylene terephthalate) film coated with a silicon coating on one side.
The release film layer 131 is peeled off during the manufacturing process. After the release film layer 131 is peeled off, the adhesive layer 132 is adhered to other layers, for example, a liquid crystal layer.
The prism layer 14 is located above the upper polarizer 13, specifically, above the polarizing layer 134, and is used for condensing light to reduce a viewing angle, thereby achieving a privacy effect.
A diffusion layer (Coating)15 is located above the prism layer 14 for shielding the prism layer 14 and ensuring a clear picture.
The protective film 16 is located above the diffusion layer 15 and is used to protect the privacy polarizer.
In a preferred embodiment of the present invention, the protective layer 133 has two layers, respectively located on the upper and lower surfaces of the polarizing layer 134, for protecting the polarizing layer 134.
In a preferred embodiment of the present invention, the lower polarizer 11 is an optical film formed by compounding multiple layers of polymer materials and having a function of generating polarized light, and includes a protective layer, a polarizing layer, a protective layer, an adhesive layer, and a release film layer stacked in sequence from bottom to top. The release film layer is peeled off in the manufacturing process. After the release film layer is peeled off, the adhesive layer is adhered to other layers, for example, the liquid crystal layer.
It should be noted that the prismatic structure of the prismatic layer 14 may be of different shapes. Specifically, the prism structure includes a plurality of sub-prisms whose cross-sectional widths decrease from bottom to top. The prismatic structure may be any shape that satisfies the cross-sectional width relationship described above. Preferably, the cross-section of the sub-prisms of the prism structure is triangular in shape (i.e., the sub-prisms are micro triangular prisms). Preferably, the cross section of the sub-prisms is shaped as an isosceles triangle, and the base of the isosceles triangle is located at the lowest.
Fig. 3 shows a schematic perspective view of a privacy polarizer according to another embodiment of the present invention. As shown in fig. 3, the privacy polarizer includes an upper polarizer 13, a prism layer 14, and a diffusion layer 15, which are sequentially stacked from bottom to top. The prism layer 14 includes a first prism sheet 141 and a second prism sheet 142.
The upper polarizer 13 is used to transmit polarized light in a specific direction.
The prism layer 14 is located above the upper polarizer 13, and is used for condensing light to reduce a viewing angle, so as to achieve a peep-proof effect. The prism layer 14 includes a first prism sheet 141 and a second prism sheet 142.
The second prism sheet 142 is located above the upper polarizer 13 and includes a plurality of micro triangular prism structures arranged in parallel. Alternatively, the arrangement direction of the micro triangular prism structures is parallel or perpendicular to the polarization direction of the polarized light allowed to pass through by the upper polarizer 13.
The first prism sheet 141 is located above the second prism sheet 142 and includes a plurality of micro triangular prism structures arranged in parallel. Alternatively, the arrangement direction of the micro triangular prism structures on the first prism sheet 141 is perpendicular to the arrangement direction of the micro triangular prism structures on the second prism sheet 142.
A diffusion layer (Coating)15 is located above the prism layer 14 for shielding the prism layer 14 and ensuring a clear picture.
In a preferred embodiment of the present invention, the micro triangular prism structure may be located on an upper surface or a lower surface of the prism sheet. For example, the micro triangular prism structure of the first prism sheet 141 is located on the lower surface of the first prism sheet 141; the micro triangular prism structure of the second prism sheet 142 is located on the upper surface of the second prism sheet 142.
It should be noted that the prism layer 14 may include a plurality of prism sheets, each having prism structures arranged in different directions to achieve privacy in different directions.
Preferably, the prism layer 14 includes a prism structure arranged in a specific direction to achieve privacy in a specific direction (a direction parallel and/or perpendicular to the polarization direction of polarized light that the polarizer allows to transmit).
Preferably, at least two prism sheet layers are included in the prism layer 14, and privacy in the first direction and the second direction is achieved. Wherein the first direction and the second direction are perpendicular to each other.
In a preferred embodiment of the present invention, the privacy polarizer includes a prism sheet. The prism sheet has an upper surface including a plurality of micro triangular prism structures arranged in parallel in a first direction, and a lower surface including a plurality of micro triangular prism structures arranged in parallel in a second direction. Wherein the first direction and the second direction are perpendicular to each other.
Fig. 4 shows a schematic diagram of a light path of light through a privacy polarizer prism layer according to another embodiment of the present invention. As shown in fig. 4, after the light rays with a certain divergence angle are collected by the prism layer, the light rays are contracted in a smaller viewing angle.
The backlight module 17 of the display panel serves as a backlight source for providing backlight. The backlight passes through a polarizer, a liquid crystal layer, and the like, and then enters the prism layer 14 at a certain divergent angle. Light rays that enter the prism layer 14 at different angles are refracted and/or reflected, respectively. Specifically, the prism layer 14 includes a plurality of micro triangular prism structures arranged in parallel. By utilizing the prism structure, light rays in all directions are integrated towards a central visual angle through optical principles such as refraction, total reflection, light accumulation and the like, and the control of the visual angle and the improvement of the panel brightness are realized.
The miniature triangular prism structure can be designed differently according to specific conditions, and the miniature triangular prism can have different section shapes.
According to the utility model discloses an on the other hand provides a display panel, including as before peep-proof polaroid, have the peep-proof effect. The display panel can be a mobile phone, a computer and the like.
Fig. 5 is a schematic perspective view of a display panel according to another embodiment of the present invention. As shown in fig. 5, the display panel includes a backlight module 17, a lower polarizer 11, a liquid crystal layer 12, an upper polarizer 13, a prism layer 14, and a diffusion layer 15, which are sequentially disposed from bottom to top.
The backlight module 17 serves as a backlight source for providing backlight. The backlight passes through the lower polarizer 11, the liquid crystal layer 12, the upper polarizer 13, and the like, and display light for image display is obtained. After the display light is gathered by the prism layer 14, the display light is contracted within a smaller visual angle, and the peep-proof effect is realized. The collected display light is emitted through the diffusion layer 15 and the like.
According to another aspect of the present invention, a peep-proof adhesive film is provided. The peep-proof adhesive film can be attached to a conventional display screen, and the peep-proof effect is achieved. The conventional display screen can be a mobile phone screen, a computer display screen and the like. Alternatively, the privacy module of the privacy film may be a privacy structure as previously described.
Fig. 6 shows a schematic cross-sectional view of a privacy film according to another embodiment of the present invention. As shown in fig. 6, the privacy adhesive film includes a release film layer 131, an adhesive layer 132, a protective layer 133, a prism layer 14, a diffusion layer 15, and a protective film 16, which are stacked in this order from bottom to top.
The utility model discloses peep-proof pad pasting is when attached, at first peels off peep-proof pad pasting bottom from type rete 131, exposes viscose layer 132, then, directly bonds the viscose layer 132 of peep-proof pad pasting on the display screen on the polaroid keep away from liquid crystal layer one side on the surface, accomplishes the attached of peep-proof pad pasting.
According to the utility model discloses an embodiment provides a peep-proof polaroid, include: a polarizing layer for transmitting polarized light in a specific direction; the protective layer is attached to the surface of the polarizing layer and used for protecting the polarizing layer; the adhesive layer is positioned below the polarizing layer and used for adhering the polarizer; the release film layer is positioned below the adhesive layer and used for protecting the adhesive layer; and the peep-proof module is positioned above the polarizing layer and comprises a prism structure, the prism structure is used for gathering light penetrating through the prism structure to realize peep-proof, and the release film layer is peeled off when the polarizing plate is bonded. Alternatively, the privacy module may be a privacy structure as previously described.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
In accordance with the embodiments of the present invention as set forth above, these embodiments are not exhaustive and do not limit the invention to the precise embodiments described. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical application, to thereby enable others skilled in the art to best utilize the invention and its various embodiments with various modifications as are suited to the particular use contemplated. The present invention is limited only by the claims and their full scope and equivalents.
Claims (10)
1. A peep-proof adhesive film comprises a peep-proof module, an adhesive layer and a release film layer which is peeled off when the peep-proof adhesive film is adhered from top to bottom in sequence, and is characterized in that,
the peep-proof module comprises a prism structure, and the prism structure is used for gathering light penetrating through the prism structure so as to realize peep-proof.
2. A peep-proof polaroid comprises a polarizing layer, a protective layer attached to the surface of the polarizing layer, an adhesive layer and a peep-proof module,
the peep-proof module comprises a prism structure, and the prism structure is used for gathering light penetrating through the prism structure so as to realize peep-proof.
3. The privacy polarizer of claim 2, wherein the privacy module is located above the polarizing layer.
4. The privacy polarizer of claim 2, wherein the privacy module comprises:
a prismatic sheet layer comprising the prismatic structures,
the prism structure comprises a plurality of sub-prisms, and the widths of the cross sections of the sub-prisms are sequentially reduced from bottom to top.
5. The privacy polarizer of claim 4, wherein the sub-prisms are micro triangular prisms, and a plurality of the micro triangular prisms are arranged in parallel.
6. The privacy polarizer of claim 5, wherein the prism sheet layer comprises:
the first prism sheet comprises a plurality of miniature triangular prisms which are arranged on the surface of the first prism sheet and are arranged in parallel along a first direction; and
and the second prism sheet is positioned below the first prism sheet and comprises a plurality of miniature triangular prisms which are arranged on the surface of the second prism sheet and are arranged in parallel along a second direction.
7. The privacy polarizer of claim 5, wherein the prism sheet layer comprises:
the first prism group is positioned on the upper surface of the prism sheet layer and comprises a plurality of miniature triangular prisms which are arranged in parallel along a first direction; and
and the second prism group is positioned on the lower surface of the prism sheet layer and comprises a plurality of miniature triangular prisms which are arranged in parallel along a second direction.
8. The privacy polarizer of claim 2, wherein the privacy module comprises:
and the diffusion layer is positioned on the surface of the prism structure and used for shielding the prism structure.
9. The privacy polarizer of claim 2, wherein the privacy module comprises:
and the protective layer is positioned on the surface of the peep-proof module and used for protecting the peep-proof module.
10. A display panel comprising the privacy polarizer of any one of claims 2 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921061038.4U CN210323675U (en) | 2019-07-09 | 2019-07-09 | Peep-proof adhesive film, peep-proof polaroid and display panel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921061038.4U CN210323675U (en) | 2019-07-09 | 2019-07-09 | Peep-proof adhesive film, peep-proof polaroid and display panel |
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| CN210323675U true CN210323675U (en) | 2020-04-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114355498A (en) * | 2021-12-29 | 2022-04-15 | 中航华东光电有限公司 | Peep-proof brightening polarizer and method for improving peep-proof and brightening performance of display |
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2019
- 2019-07-09 CN CN201921061038.4U patent/CN210323675U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114355498A (en) * | 2021-12-29 | 2022-04-15 | 中航华东光电有限公司 | Peep-proof brightening polarizer and method for improving peep-proof and brightening performance of display |
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