CN114296171A - Polarizer and display device - Google Patents
Polarizer and display device Download PDFInfo
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- CN114296171A CN114296171A CN202111617603.2A CN202111617603A CN114296171A CN 114296171 A CN114296171 A CN 114296171A CN 202111617603 A CN202111617603 A CN 202111617603A CN 114296171 A CN114296171 A CN 114296171A
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Abstract
The application discloses polaroid and display device belongs to and shows technical field. The polarizing sheet disclosed in the present application includes a linearly polarizing film including a first region and a second region surrounding the first region; the first area is provided with a plurality of openings, and the proportion of the openings in the first area in the unit area is gradually reduced in the direction from the center of the first area to the edge of the first area, so that the average light transmittance of the linear polarizing film in the unit area is gradually reduced. The plurality of openings can enable more light rays to penetrate through the first area, and when the polaroid is subsequently applied to the display device, the camera assembly can be arranged corresponding to the first area, so that the light inlet quantity of the camera assembly is improved. And the average light transmittance of the linear polarizing film in a unit area gradually decreases from the center of the first region to the outside, so that the light transmittance of the portion of the first region closer to the second region is closer to the second region, thereby reducing the display difference of the display device corresponding to the first region and the second region.
Description
Technical Field
The application relates to the technical field of display, in particular to a polarizer and a display device.
Background
With the increasing requirements of display devices on screen occupation ratio, the technology of full-screen is gradually developed, and in order to realize full-screen, the display device needs to arrange the camera assembly below the screen body. When the camera assembly is closed, the screen body above the camera assembly displays normally, and when the camera assembly is started, the screen body above the camera assembly needs to ensure enough light entering amount. The display device is usually provided with a polarizer above the screen body to reduce the negative influence of ambient light on the display effect. However, the transmittance of the polarizer is low, and in order to improve the shooting quality of the camera assembly, the transmittance of the polarizer in the area corresponding to the camera assembly needs to be improved, and meanwhile, the problem of display difference between the transparent area corresponding to the screen body and the peripheral display area needs to be solved.
Disclosure of Invention
The technical problem that this application mainly solved provides a polaroid and display device, can reduce the demonstration difference between this printing opacity region and the peripheral display area when improving the regional luminousness of the screen body corresponding to camera subassembly.
In order to solve the technical problem, the application adopts a technical scheme that: providing a polarizer comprising a linear polarizing film comprising a first region and a second region surrounding the first region;
the first region is provided with a plurality of openings, and in the direction from the center of the first region to the edge of the first region, the proportion of the opening regions in the first region in a unit area is gradually reduced, so that the average light transmittance of the linear polarizing film in the unit area is gradually reduced.
Wherein the aperture of the open pore is gradually reduced in a direction from the center of the first region to the edge of the first region.
Wherein, in the direction from the center of the first area to the edge of the first area, the arrangement density of the open pores is gradually increased.
Wherein, one of the plurality of openings corresponds to the geometric center of the first region, and the other openings of the plurality of openings are arranged in a plurality of circles which gradually expand outwards by taking the geometric center as a circle center, and the openings on the same circle have the same aperture.
Wherein, in the direction from the center of the first area to the edge of the first area, the aperture difference of two adjacent open pores is 10-30%.
Wherein the apertures of the plurality of openings are the same, and the arrangement density of the openings is gradually reduced in the direction from the center of the first region to the edge of the first region.
Wherein, the orthographic projection shape of the opening on the plane of the polarizer is circular or regular polygon.
The polarizer further comprises a first supporting film, a second supporting film and a phase difference film, wherein the first supporting film and the second supporting film are respectively positioned on the two opposite side surfaces of the linear polarizing film, and the phase difference film is positioned on one side surface of the first supporting film, which is far away from the linear polarizing film;
wherein the plurality of openings penetrate the first support film, the second support film, and the phase difference film.
In order to solve the above technical problem, another technical solution adopted by the present application is: provided is a display device including:
the polarizer of the technical scheme;
the screen body is positioned on one side of the polaroid;
the camera assembly is positioned on one side, deviating from the polaroid, of the screen body, and the camera assembly corresponds to the first area.
Wherein the display device further comprises:
the antireflection film is positioned on one side of the polarizer, which is far away from the screen body;
preferably, the display device further comprises a cover plate, the cover plate is located on one side of the polarizer, which is away from the screen body, and the light transmittance of the cover plate is greater than 90%.
The beneficial effect of this application is: in contrast to the case of the prior art, the present application provides a polarizing sheet including a linearly polarizing film including a first region and a second region surrounding the first region; the first area is provided with a plurality of openings, and the proportion of the openings in the first area in the unit area is gradually reduced in the direction from the center of the first area to the edge of the first area, so that the average light transmittance of the linear polarizing film in the unit area is gradually reduced. The first area of the linear polarizing film is provided with a plurality of openings, so that more light can penetrate through the first area, and the camera assembly can be arranged corresponding to the first area when the polarizer is applied to the display device subsequently, so that the light inlet quantity of the camera assembly can be improved. Further, the average light transmittance of the linear polarizing film per unit area gradually decreases from the center of the first region to the outside, so that the light transmittance becomes closer to the second region in a portion of the first region closer to the second region, thereby making it possible to reduce the display difference of the display device corresponding to the first region and the second region.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts. Wherein:
FIG. 1 is a schematic structural diagram of an embodiment of a polarizer of the present application;
FIG. 2 is an enlarged schematic view of a first area of FIG. 1;
FIG. 3 is a schematic cross-sectional view taken along the line A-A in FIG. 1;
FIG. 4 is a schematic structural diagram of another embodiment of a polarizer of the present application;
FIG. 5 is a schematic structural diagram of another embodiment of a polarizer of the present application;
FIG. 6 is a schematic structural diagram of another embodiment of a polarizer of the present application;
FIG. 7 is a schematic structural diagram of another embodiment of a polarizer of the present application;
fig. 8 is a schematic structural diagram of an embodiment of a display device according to the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments that can be obtained by a person skilled in the art without making any inventive step based on the embodiments in the present application belong to the protection scope of the present application.
Referring to fig. 1 to 3, fig. 1 is a schematic structural diagram of an embodiment of a polarizer of the present application, fig. 2 is an enlarged schematic view of a first area in fig. 1, fig. 3 is a schematic cross-sectional diagram of a direction a-a in fig. 1, a polarizer 100 in the present embodiment includes a linear polarizing film 11, and further includes a first support film 12, a second support film 13, and a phase difference film 14, the first support film 12 and the second support film 13 are respectively located on two opposite side surfaces of the linear polarizing film 11, and the phase difference film 14 is located on one side surface of the first support film 12 away from the linear polarizing film 11. The multiple films in the polarizer 100 are stacked and shielded from each other in fig. 1, so that only the line polarizing film 11 is indicated in fig. 1.
The material of the linear polarizing film 11 includes polyvinyl alcohol (PVA), which is a main functional film layer of the polarizer 100 for generating a polarization effect, and is used to convert external natural light into linearly polarized light, the material of the first support film 12 and the second support film 13 includes Triacetylcellulose (TAC), which is used to make the polarizer 100 have structural stability, the material of the phase difference film 14 includes Cyclic Olefin Polymer (COP), which is used to turn the linearly polarized light into circularly polarized light, the circularly polarized light is reflected by a screen body disposed below the polarizer 100 and then becomes circularly polarized light with an opposite rotation direction, and after passing through the phase difference film 14, the circularly polarized light becomes another linearly polarized light with a vibration direction perpendicular to the polarization direction of the linearly polarized light, which cannot penetrate through the linear polarizing film 11, thereby reducing adverse effect of the external light on the display effect of the screen body.
Specifically, the linear polarizing film 11 includes a first area 111 and a second area 112 surrounding the first area 111. In this embodiment, the first region 111 is provided in a circular shape, and in other embodiments, the first region may be provided in other regular or irregular shapes such as a square shape, an oval shape, and a drop shape, which is not limited in this application.
The first region 111 is provided with a plurality of openings 113, and in a direction from the center of the first region 111 to the edge of the first region 111, the proportion of the opening regions in the first region 111 per unit area is gradually reduced, so that the average light transmittance of the linear polarizing film 11 per unit area is gradually reduced. For clarity, the opening 113 is not shown in the first region 111 in fig. 1, and an orthogonal projection shape of the opening 113 in the plane of the polarizer 100 in fig. 2 is a circle, and in other embodiments, the opening 113 may be a regular polygon or other shapes, which is not limited in this application. When the polarizer 100 is irradiated by external light, the openings 113 allow more light to pass through the polarizer corresponding to the first region 111, so as to increase the transmittance of the polarizer corresponding to the first region 111.
When the external light irradiates the second region 112 of the linear polarizing film 11, a polarization effect is generated, so that the transmittance of the second region 112 is low. The plurality of openings 113 of the first region 111 correspond to a depolarized region formed in the first region 111, and the external light can completely pass through the openings 113, but the non-opened regions between adjacent openings 113 in the first region 111 still have a polarization effect. In the present embodiment, the proportion of the open area in the unit area in the first area 111 gradually decreases from the center of the first area 111 to the outside, so that the average light transmittance of the linear polarizing film 11 in the unit area gradually decreases, and the polarization effect is closer to the second area 112.
Specifically, as shown in fig. 2, the present embodiment is disposed in the direction from the center of the first region 111 to the edge of the first region 111, and the aperture diameter of the opening hole 113 gradually becomes smaller, so that the proportion of the opening hole region in the first region 111 per unit area gradually decreases, thereby achieving a gradual decrease in the average light transmittance of the linear polarizing film 11 per unit area. Preferably, the arrangement density of the openings 113 in the direction is gradually increased, that is, the number of the openings 113 in a unit area is gradually increased, so that the area occupied by the openings 113 is increased as much as possible, that is, the light transmittance is increased, on the premise that the average light transmittance in the direction is gradually decreased.
Of course, in other embodiments, the arrangement density of the openings 113 may also be kept constant or gradually decreased in the direction from the center of the first region 111 to the edge of the first region 111, and it can also be achieved that the proportion of the opening regions in the first region 111 is gradually decreased in a unit area, so that the average light transmittance of the linear polarizing film 11 in the unit area is gradually decreased, as shown in fig. 4, fig. 4 is a schematic structural diagram of another embodiment of the polarizer of the present application, and only the first region is schematically shown.
When the polarizer 100 is applied to a display device, the camera assembly can be disposed corresponding to the first area 111, so that the light entering amount of the camera assembly can be increased, and the display difference between the first area 111 and the second area 112 corresponding to the display device can be reduced.
In addition, in the present embodiment, the plurality of openings 113 are only located on the linear polarizing film 11, and when the polarizer 100 is manufactured, the plurality of openings 113 may be formed on the linear polarizing film 11, and then other film layers may be attached.
In one embodiment, please refer to fig. 5 in combination with fig. 1, and fig. 5 is a schematic structural diagram of another embodiment of the polarizer of the present application, in which only the first region is schematically shown. The structure of the polarizer 100 in this embodiment is the same as that in the above embodiment, except that in this embodiment, one of the openings 113 corresponds to the geometric center C of the first region 111, and the other openings 113 in the plurality of openings 113 are arranged in a plurality of circles with the geometric center C as a center, and the openings 113 located on the same circle have the same aperture. The dotted lines in fig. 5 indicate the plurality of circles. From the geometric center C to the outside, the aperture diameters of the openings 113 located on different circumferences are gradually reduced, so that the proportion of the opening area in the first area 111 per unit area is gradually reduced, thereby achieving that the average light transmittance of the linear polarizing film 11 per unit area is gradually reduced. Here, the apertures of the openings 113 provided on the same circumference are the same, and are not absolutely equal, but are within 10% of each other.
Preferably, as many apertures 113 are provided on each circumference as possible to increase light transmission and thereby increase the amount of light subsequently entering the camera assembly. Meanwhile, in the direction from the center of the first region 111 to the edge of the first region 111, the aperture of two adjacent openings 113 differs by 10% -30%, for example, 10%, 15%, 20%, 25%, 30%, etc., i.e., the opening 113 on the dotted line circumference near the center has an aperture of about 10% -30% compared with the opening 113 on the dotted line circumference near the edge. The proportion of the open area in the unit area in the first area 111 is gradually reduced from the center to the outside, so that the average light transmittance of the first area 111 in the unit area is gradually reduced, and the display difference between the first area 111 and the second area 112 can be reduced when the polarizer is applied to a display device in the following.
Of course, in other embodiments, more openings with appropriate apertures may be disposed in the non-opening areas between adjacent openings 113 in the first area 111 of each of the above embodiments to obtain a greater light transmittance, and only the average light transmittance of the first area 111 in a unit area needs to be gradually reduced from the center to the outside.
In one embodiment, please refer to fig. 6 in combination with fig. 1, and fig. 6 is a schematic structural diagram of another embodiment of the polarizer of the present application, in which only the first region is schematically shown. In the present embodiment, the apertures of the plurality of openings 113 provided in the first region 111 are the same, and the arrangement density of the openings 113 gradually decreases in the direction from the center of the first region 111 to the edge of the first region 111. Here, the plurality of openings 113 are provided to have the same aperture, and are not absolutely equal but have a difference of 10%.
As shown in fig. 6, the arrangement of the plurality of openings 113 can increase the external light transmitted through the first region 111, and the closer to the center of the first region 111, the denser the arrangement of the openings 113 is, the closer to the edge of the first region 111, the sparser the arrangement of the openings 113 is, that is, from the center of the first region 111 to the outside, the proportion of the opening regions is gradually reduced, so that the light transmittance is gradually reduced, the polarization effect is gradually increased, and the openings are closer to the second region 112 at the periphery of the first region 111, thereby reducing the display difference between the first region 111 and the second region 112 by using the polarizer in the display device.
In one embodiment, please refer to fig. 7 in conjunction with fig. 1-3, fig. 7 is a schematic structural diagram of another embodiment of the polarizer of the present application, in which the polarizer 200 includes a linear polarization film 21, and further includes a first support film 22, a second support film 23 and a phase difference film 24, the first support film 22 and the second support film 23 are respectively located on two opposite side surfaces of the linear polarization film 21, and the phase difference film 24 is located on one side surface of the first support film 22 away from the linear polarization film 21.
Wherein the linear polarizing film 21 includes a first region 211 and a second region 212 surrounding the first region 211. And the first region 211 is provided with a plurality of openings (not shown), in a direction from the center of the first region 211 to the edge of the first region 211, a proportion of the opening regions in the first region 211 per unit area is gradually decreased, so that the average transmittance of the linear polarizing film 21 per unit area is gradually decreased. Further, the plurality of openings penetrate the first support film 22, the second support film 23, and the retardation film 24.
Specifically, the plurality of openings may be formed by etching or punching after the layers of the polarizer 200 are stacked, so that the openings simultaneously penetrate all the layers.
The arrangement and the aperture arrangement of the openings may be the same as those of the above embodiments, for example, in the case of keeping the aperture of the openings the same, the arrangement density of the openings is gradually decreased from the center of the first region 211 to the outside, or the aperture of the openings is gradually decreased from the center of the first region 211 to the outside. On one hand, the embodiment can increase the transmittance of the external light passing through the polarizer 200 through the opening, and on the other hand, the embodiment can reduce the display difference between the first region 211 and the second region 212 by using the polarizer in the display device by realizing that the average transmittance of the linear polarizing film 21 in a unit area is gradually reduced in the direction from the center of the first region 211 to the edge of the first region 211.
The external light in the above embodiments refers to visible light, that is, visible light can pass through the openings in the above embodiments, which is beneficial for imaging by a camera assembly in a display device.
Based on the same inventive concept, the present application provides a display device, please refer to fig. 8, fig. 8 is a schematic structural diagram of an embodiment of the display device of the present application, and the display device includes the polarizer 10, the screen body 20, and the camera assembly 30 according to any one of the above embodiments. The screen body 20 is located on one side of the polarizer 10, the camera assembly 30 is located on one side of the screen body 20 away from the polarizer 10, and the camera assembly 30 is disposed corresponding to a first area (not labeled) of the polarizer 10. The camera assembly 30 in the display device provided by the application belongs to the arrangement mode of the camera under the screen, when shooting is needed, more light is needed to penetrate through the polaroid 10 and the screen body 20 corresponding to the first area and enter the camera assembly 30, when shooting is not needed, the screen body corresponding to the first area and the second area needs to play a display function, and the polaroid 10 is used for reducing the adverse effect of the external light on the display function.
The first region of the polarizer 10 is provided with a plurality of openings (not shown) so that more external light can enter the camera assembly 30 through the polarizer 10 and the screen body 20, thereby increasing the light incident amount of the camera assembly 30 and improving the shooting quality. In addition, in the present embodiment, in the direction from the center to the edge of the first region, the plurality of holes are arranged such that the proportion of the hole area in the unit area in the first region is gradually decreased, so that the average light transmittance in the unit area is gradually decreased, that is, the closer the first region is to the second region, the closer the polarization effect of the polarizer 10 is to the second region, so that the camera assembly 30 does not operate, and when both the first region and the second region are used for displaying, the display difference between the first region and the second region is decreased, so as to improve the display effect.
While the plurality of holes are schematically illustrated in FIG. 8 through the various layers of the polarizer 10, in other embodiments, the plurality of holes may be disposed only on the linear polarizing film therein.
Further, the display device of the present application further includes a cover plate 40 and an antireflection film 50, wherein the cover plate 40 and the antireflection film 50 are located on one side of the polarizer 10 away from the screen body 20, and the antireflection film 50 is set to be one layer or multiple layers and can be disposed on one side or two sides of the cover plate 40, wherein the light transmittance of the cover plate is greater than 90%, so as to further increase the light incident amount of the camera assembly 30 and improve the shooting effect. In this embodiment, cover plate 40 is coated with a single layer or multiple layers of antireflection films 50 of different wavelengths. Fig. 8 schematically shows two antireflection films 50 on both sides of the cover 40.
The above description is only for the purpose of illustrating embodiments of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application or are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.
Claims (10)
1. A polarizer comprising a linear polarizing film, the linear polarizing film comprising a first region and a second region surrounding the first region;
the first region is provided with a plurality of openings, and in the direction from the center of the first region to the edge of the first region, the proportion of the opening regions in the first region in a unit area is gradually reduced, so that the average light transmittance of the linear polarizing film in the unit area is gradually reduced.
2. The polarizer according to claim 1, wherein the aperture of the opening is gradually smaller in a direction from the center of the first region to the edge of the first region.
3. The polarizer according to claim 2, wherein the arrangement density of the holes is gradually increased in a direction from the center of the first region to the edge of the first region.
4. The polarizer of claim 3, wherein one of the plurality of openings corresponds to a geometric center of the first region, and other openings of the plurality of openings are arranged in a plurality of circles with the geometric center as a center and gradually expanding outward, and the openings on the same circle have the same aperture.
5. The polarizer according to any of claims 2 to 4, wherein the aperture of two adjacent openings in the direction from the center of the first region to the edge of the first region differs by 10% to 30%.
6. The polarizer according to claim 1, wherein the apertures of the plurality of holes are the same, and the arrangement density of the holes becomes gradually smaller in a direction from the center of the first region to the edge of the first region.
7. The polarizer of claim 1, wherein the orthographic shape of the opening on the plane of the polarizer is circular or regular polygon.
8. The polarizer according to claim 1, further comprising a first support film, a second support film and a phase difference film, the first support film and the second support film being respectively located on opposite side surfaces of the linear polarizing film, the phase difference film being located on a side surface of the first support film facing away from the linear polarizing film;
wherein the plurality of openings penetrate the first support film, the second support film, and the phase difference film.
9. A display device, comprising:
the polarizer of any of claims 1 to 8;
the screen body is positioned on one side of the polaroid;
the camera assembly is positioned on one side, deviating from the polaroid, of the screen body, and the camera assembly corresponds to the first area.
10. The display device according to claim 9, further comprising:
the antireflection film is positioned on one side of the polarizer, which is far away from the screen body;
preferably, the display device further comprises a cover plate, the cover plate is located on one side of the polarizer, which is away from the screen body, and the light transmittance of the cover plate is greater than 90%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111617603.2A CN114296171A (en) | 2021-12-27 | 2021-12-27 | Polarizer and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111617603.2A CN114296171A (en) | 2021-12-27 | 2021-12-27 | Polarizer and display device |
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| CN114296171A true CN114296171A (en) | 2022-04-08 |
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| CN202111617603.2A Pending CN114296171A (en) | 2021-12-27 | 2021-12-27 | Polarizer and display device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114779518A (en) * | 2022-04-25 | 2022-07-22 | 惠科股份有限公司 | Display device and electronic apparatus |
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