CN213581654U - Wide-viewing-angle film, display panel and display device - Google Patents
Wide-viewing-angle film, display panel and display device Download PDFInfo
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- CN213581654U CN213581654U CN202022462251.5U CN202022462251U CN213581654U CN 213581654 U CN213581654 U CN 213581654U CN 202022462251 U CN202022462251 U CN 202022462251U CN 213581654 U CN213581654 U CN 213581654U
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- 239000000758 substrate Substances 0.000 claims abstract description 54
- 239000000945 filler Substances 0.000 claims abstract description 29
- 210000004087 cornea Anatomy 0.000 claims description 25
- 239000010410 layer Substances 0.000 claims description 21
- 239000011521 glass Substances 0.000 claims description 14
- 239000011241 protective layer Substances 0.000 claims description 6
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 5
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 5
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- -1 polyethylene terephthalate Polymers 0.000 claims description 2
- 238000010023 transfer printing Methods 0.000 claims description 2
- 239000012780 transparent material Substances 0.000 claims description 2
- 230000000007 visual effect Effects 0.000 description 15
- 239000012528 membrane Substances 0.000 description 8
- 239000003292 glue Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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Abstract
The utility model provides a wide viewing angle film, which comprises a substrate and a refraction layer covering the surface of the substrate; the refraction layer comprises convex structures and fillers, and the convex structures are arranged on the surface of the substrate and used for refracting light rays incident from one side of the substrate so as to increase the emergent angle of the light rays; the filler is filled in gaps among the convex structures and used for protecting the convex structures. By attaching the wide viewing angle film to the display panel, the viewing angle of the display panel can be effectively increased.
Description
Technical Field
The utility model relates to a show technical field, especially relate to a wide visual angle membrane, display panel and display device.
Background
Teaching equipment with a display screen such as an intelligent flat plate is often equipped in a teaching classroom nowadays to better show teaching contents, interact with students, and the display screen of the teaching equipment such as the intelligent flat plate is used for writing in the classroom, so that the traditional blackboard writing is gradually replaced. However, most of the existing display screens are liquid crystal display screens, backlight light sources of the existing display screens are emitted outwards at an angle close to a vertical screen, and the visual angle is small, so that only students facing the display screens can clearly see blackboard writing on the display screens, and the students on two sides of the display screens are often difficult to clearly see the content on the display screens, so that the application of the display screens in teaching classes is greatly limited.
SUMMERY OF THE UTILITY MODEL
The utility model provides a wide vision membrane, display panel and display device can effectively increase display screen's visual angle.
In order to achieve the technical effects, the embodiment of the utility model discloses following technical scheme:
in a first aspect, there is provided a wide viewing angle cornea, the wide viewing angle cornea comprising:
the refraction layer covers the surface of the substrate;
the refraction layer comprises convex structures and fillers, and the convex structures are arranged on the surface of the substrate and used for refracting light rays incident from one side of the substrate so as to increase the emergent angle of the light rays;
the filler is filled in gaps among the convex structures and used for protecting the convex structures.
In a second aspect, there is provided a display panel comprising a panel glass, and a sensor, the display panel further comprising a wide viewing film as described above;
the panel glass is attached to the refraction layer of the wide-view film;
the sensor is attached to a substrate of wide view cornea.
In a third aspect, a display device is provided, which comprises the display panel provided in the second aspect.
The embodiment of the utility model provides a technical scheme can include following beneficial effect:
the utility model provides a wide cornea of looking at, wide visual angle membrane include substrate and cover and the refraction layer on substrate surface, and the refraction layer is including arranging in substrate surface's protruding structure to and be located the filler that the gap between the protruding structure is used for protecting protruding structure, refracts the light of inciding from substrate one side through the protruding structure in the wide visual angle membrane, has increased the angle of light from wide visual angle membrane outgoing. By attaching the wide viewing angle film to the display panel, the viewing angle of the display panel can be effectively increased.
Drawings
Fig. 1 is an application scenario of the present invention.
Fig. 2 illustrates a wide viewing angle cornea in accordance with an exemplary embodiment of the present invention.
Fig. 3 illustrates a bump structure according to an exemplary embodiment of the present invention.
Fig. 4 is a schematic diagram of the wide view cornea provided by the present invention.
Fig. 5 is a diagram of a wide viewing angle cornea in accordance with another exemplary embodiment of the present invention.
Fig. 6 is a display panel according to an exemplary embodiment of the present invention.
Fig. 7 illustrates a viewing angle of a display panel according to an exemplary embodiment of the present invention.
Fig. 8 is a diagram illustrating a display device according to an exemplary embodiment of the present invention.
Detailed Description
In order to make the technical solutions in the embodiments of the present invention better understood and make the above objects, features and advantages of the embodiments of the present invention more obvious and understandable, the embodiments of the present invention are described in further detail with reference to the accompanying drawings.
See fig. 1, for the application scenario of the present invention. Teaching equipment with a display screen is gradually used for replacing a blackboard to display teaching contents such as blackboard writing in a teaching classroom. The display screen has a visual angle, the color of the picture can not be distorted within the visual angle range, and students can clearly see the content on the display screen. However, students beyond the visual angle can only see the contents of a part of the display screen area, and the contents of some display screen areas cannot be seen clearly due to picture distortion. This is very disadvantageous for students sitting on both sides of a classroom to study in class.
In order to solve the problem that the visual angle of above-mentioned display screen can't satisfy the classroom teaching demand, the utility model provides a wide cornea of looking is shown in fig. 2, wide cornea 200 specifically includes: a substrate 210 and a refraction layer 220 covering the surface of the substrate 210;
the refraction layer 220 includes convex structures 221 and fillers 222, where the convex structures 221 are arranged on the surface of the substrate 210, and are used for refracting light incident from one side of the substrate 210 to increase the emergent angle of the light, it should be noted that the convex structures shown in fig. 2 are only an exemplary example, and the shape of the convex structures in the present application is not limited to the shape shown in the drawings;
the filler 222 is filled in the gaps between the protruding structures 221 to protect the protruding structures 221.
The utility model provides a wide cornea of looking can be through the protruding structure in the wide visual angle membrane to the light of inciding from substrate one side refraction, has increased the angle that light was followed wide cornea of looking outgoing. Through laminating this wide visual angle membrane on display panel, can effectively increase display panel's visual angle, and in this visual angle, the colour temperature, colour gamut, the accurate distribution of colour of light are even, have effectively reduced the total reflection.
In one embodiment, the substrate 210 may provide strength to support the wide viewing angle film 200. The surface of the substrate 210 is equidistantly arranged with a plurality of convex structures 221. Optionally, the height of the protruding structures 221 is 15-25 μm, and the pitch is 15-25 μm. For example, in some embodiments, the protruding structures 211 are 20 μm high and 20 μm apart, and are arranged on the surface of the substrate 210 at equal intervals.
In addition, the shape of the cross section of the protrusion structures 221 perpendicular to the substrate surface direction may be any regular or irregular shape, as shown in fig. 3, and may be a trapezoid, a triangle, a semicircle, a rectangle, and the like. In order to uniformly distribute light rays at different emission angles, i.e. to avoid light rays from being gathered at certain emission angles and to have high light intensity, the cross section of the convex structure 221 perpendicular to the surface direction of the substrate can be designed to be trapezoidal, and the included angle between the waist and the lower bottom of the trapezoid is 65 +/-10 degrees. Besides regular shape, the cross section of the protruding structure 221 perpendicular to the substrate surface direction may also be irregular shape, and those skilled in the art can design the protruding structure 221 into different shapes according to actual needs, which is not limited herein.
The filler 222 is filled in the gaps between the protruding structures 221 to protect the protruding structures 221. The wide viewing angle film 200 is subject to collision and extrusion during transportation or when the screen glass is attached, and the filler 222 can play a role of buffering during transportation and attachment of the wide viewing angle film, so that the internal structure of the wide viewing angle film is not damaged, and especially the shape of the convex structure is prevented from being deformed due to extrusion collision. In some embodiments, the filler may be OCA glue, and when the wide viewing angle film is used for a display panel, the filler of the wide viewing angle film may be attached to the glass panel of the display panel without using an additional adhesive to attach the two.
Upon incidence on the wide viewing angle cornea 200, light interacts with the wide viewing angle film to cause reflection, absorption, and transmission. To reduce light reflection and absorption and increase light transmission, the material of each portion of the wide viewing film 200 may be transparent or at least partially transparent. In some embodiments, the substrate 210, the raised structures 221, and the filler 222 can be made of transparent materials to enhance the transmission of light through the wide viewing angle cornea. In addition, the wide viewing film 200 may be colorless and transparent in order to transmit the whole band of visible light of the light; or may be colored translucent, such as blue translucent, depending on the need to reject certain bands of light, such as blue light, which is harmful to the human eye.
In some embodiments, in order to ensure that the exit angle of the light exiting from the wide viewing film is increased, the refractive indices of the structures of the wide viewing film 220 may have the following relationship: the refractive index of the protruding structures 221 is smaller than that of the substrate 210, and the refractive index of the fillers 222 is larger than that of the protruding structures 221. The light incident on the wide viewing film from the substrate side is transmitted through the substrate 210, the convex structures 221, and the filler 222, and the exit angle of the light exiting from the wide viewing film is increased. Of course, the above is only an exemplary example, and in actual design, the refractive index of the base material, the filler and the protrusion structure in the wide view cornea may also satisfy other conditions as long as the light emergent angle can be increased after passing through the wide view cornea, and the present invention is not limited herein.
In order to satisfy the above-mentioned relationship between refractive indexes of the structures and to satisfy the requirement that the wide viewing angle film 200 should be at least partially transparent, in one embodiment, the substrate 210 may be selected from PET (polyethylene terephthalate); the protruding structure 221 may be made of uv-curable glue; the filler 222 may be an optically clear double-sided adhesive tape, such as OCA tape. The refraction layer 220 can be printed on the substrate 210 by thermal transfer printing, and the thickness of the wide viewing film 200 is about 25-40 μm.
Referring to fig. 4, the schematic diagram of the wide viewing angle film of the present invention for increasing the light exit angle is shown. The wide viewing angle film 400 includes a substrate 410, and a refractive layer 420 covering a surface of the substrate 410. The refractive layer 420 includes a convex structure 421 and a filler 422. The cross section of the protruding structures 421 perpendicular to the substrate surface direction is in a trapezoidal shape with a height of 20 μm, and the protruding structures are equidistantly arranged on the substrate 410 surface at a pitch of 20 μm. The substrate 410 is PET (refractive index n is about 1.57); the protruding structure is ultraviolet curing glue (the refractive index n is 1.4-1.5); the filler is OCA glue (the refractive index n is 1.5-1.6). The incident light is incident on the substrate 410 from air (refractive index n is 1.0), and is refracted at the interface between the substrate 410 and air, and since the refractive index of the substrate 410 is greater than that of air, the light is deflected in a direction close to the normal (the dotted line in the figure, perpendicular to the interface between the substrate 410 and air) according to the law of refraction, and the angle of refraction is smaller than the angle of incidence. Similarly, when light enters the protrusion structure 421 from the substrate 410, since the refractive index of the substrate 410 is greater than that of the protrusion structure 421, the light is deflected in the direction away from the normal, and the refraction angle is greater than that of the lightThe angle of incidence. The light incident on the protrusion 421 partially exits from the top of the trapezoid, as shown by light 1 in fig. 4, and partially exits from the waist of the trapezoid, as shown by light 2 in fig. 4. Wherein, for the light ray 1 exiting from the top of the trapezoid, since the normal of the interface of the convex structure 421 and the filler 422 is vertical, it follows the law of refraction n1·sinθ1＝n2·sinθ2The propagation direction of the light ray after passing through the wide viewing angle film 400 is unchanged, and the angle of the light ray exiting from the wide viewing angle film 400 is equal to the angle of the light ray when the light ray enters. For the light ray 2 exiting from the waist of the trapezoid, since the normal of the interface between the protruding structure 421 and the filler 422 is non-vertical, the refracted light ray is further deflected to the right as shown in fig. 4. When the light exits from the filler 422 to the air, the light is deflected in a direction away from the normal line because the refractive index of the air is smaller than that of the filler, and further deflected to the right. Therefore, the propagation direction of the light after passing through the wide viewing angle film 400 changes, and the angle between the light emitted from the wide viewing angle film 400 and the normal perpendicular to the wide viewing angle film is larger than the angle between the light entering the wide viewing angle film and the normal. For the convex structures with different shapes, such as triangle, semicircle, rectangle, etc., the principle of increasing the light exit angle is similar to the above process, and is not repeated herein.
The utility model provides a pair of wide cornea of looking can be through the protruding structure in the wide visual angle membrane to the light of inciding from substrate one side refraction, has increased the angle that light was followed wide cornea of looking outgoing. By attaching the wide viewing angle film to the display panel, the viewing angle of the display panel can be effectively increased.
In order to protect the wide-viewing film from damage to its internal structure during transportation, the wide-viewing film 500 further includes a protective layer 530, as shown in fig. 5. The protective layer covers the surface of the refractive layer 520 and is used for protecting the refractive layer 520. The wide viewing angle cornea 500 may be used with the protective layer 530 removed. In an embodiment, the protective layer can be PET, also can be other materials that have certain mechanical strength, can play the cushioning effect of moving away to avoid possible earthquakes, and the material of protective layer 520 can be selected according to actual need to the technical staff in this field, the utility model discloses do not do the restriction here.
Based on the wide viewing film, the present invention further provides a display panel, as shown in fig. 6, the display panel 600 includes a sensor 610, a wide viewing film 620, and a panel glass 630. Wherein the sensor 610 is attached to the substrate of the wide viewing angle film 620, and the panel glass is attached to the refractive layer of the wide viewing angle film. In some embodiments, the filler of the wide viewing angle film 620 is OCA glue, so that the sensor 610 can be attached to the substrate of the wide viewing angle film 620 through OCA glue, and the panel glass can be directly attached to the refractive layer of the wide viewing angle film through the filler without adding an additional layer of OCA glue. By attaching the wide viewing angle film to the display panel, the viewing angle of the display panel can be effectively increased. In some embodiments, when the cross-section of the convex structure in the wide viewing film 620 perpendicular to the substrate surface is trapezoidal, as shown in fig. 7, the viewing angle of the display panel with the wide viewing film 620 can be increased to ± 55 °, and the color temperature, color gamut, and color quasi-distribution of the light rays are uniform within the viewing angle.
In addition, in some embodiments, before the panel glass 630 is attached to the wide viewing angle film 620, the panel glass may be further subjected to a back screen printing process, a front side spraying process with an AG coating, an AF coating, and the like, so as to achieve the effects of fingerprint resistance and scratch resistance. The display panel obtained by bonding the panel glass 630 processed through the above-mentioned processing steps to the wide viewing angle film 620 can effectively increase the viewing angle and reduce the total reflection. The panel glass can be processed by conventional means according to actual needs by those skilled in the art, and the processing procedure of the panel glass does not limit the scope of protection of the present application.
Based on the wide viewing film, the present invention further provides a display device, as shown in fig. 8, the display device includes a power board, a main board, and a display panel as in the above embodiments. By adding the wide-viewing-angle film to the display panel, the viewing angle of the display device is effectively increased.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the specification disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (11)
1. A wide viewing angle cornea, the wide viewing angle film comprising:
the refraction layer covers the surface of the substrate;
the refraction layer comprises convex structures and fillers, and the convex structures are arranged on the surface of the substrate and used for refracting light rays incident from one side of the substrate so as to increase the emergent angle of the light rays;
the filler is filled in gaps among the convex structures and used for protecting the convex structures.
2. The wide viewing cornea of claim 1, wherein the raised structures are equally spaced on the surface of the substrate.
3. The wide viewing cornea of claim 2, wherein the spacing between the raised structures is 15-25 μ ι η and the height of the raised structures is 15-25 μ ι η.
4. The wide viewing cornea of claim 1, wherein the substrate, the raised structures, and the filler are transparent materials.
5. The wide viewing cornea of claim 1, wherein the refractive index of the raised structures is less than the refractive index of the substrate, and the refractive index of the filler is greater than the refractive index of the raised structures.
6. The wide viewing cornea of claim 1, wherein a cross-section of said raised structures perpendicular to said substrate surface is trapezoidal in shape.
7. The wide viewing angle film of claim 1, wherein the substrate is polyethylene terephthalate, the protrusion structure is an ultraviolet curing adhesive, and the filler is an optically transparent double-sided adhesive.
8. The wide viewing film of claim 1, wherein the refractive layer is printed on the substrate by thermal transfer printing.
9. The wide viewing film of any one of claims 1-8, further comprising a protective layer covering the surface of the refractive layer for protecting the refractive layer.
10. A display panel comprising a panel glass, and a sensor, wherein the display panel further comprises the wide viewing film of any one of claims 1-9;
the panel glass is attached to the refraction layer of the wide-view film;
the sensor is attached to a substrate of wide view cornea.
11. A display device characterized in that the display device comprises the display panel according to claim 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022462251.5U CN213581654U (en) | 2020-10-29 | 2020-10-29 | Wide-viewing-angle film, display panel and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022462251.5U CN213581654U (en) | 2020-10-29 | 2020-10-29 | Wide-viewing-angle film, display panel and display device |
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| Publication Number | Publication Date |
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| CN213581654U true CN213581654U (en) | 2021-06-29 |
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| CN202022462251.5U Active CN213581654U (en) | 2020-10-29 | 2020-10-29 | Wide-viewing-angle film, display panel and display device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114023901A (en) * | 2021-10-27 | 2022-02-08 | 深圳市华星光电半导体显示技术有限公司 | Thin film packaging structure, preparation method thereof and display panel |
| CN114551759A (en) * | 2022-02-15 | 2022-05-27 | 深圳市华星光电半导体显示技术有限公司 | Cover plate structure, display module and preparation method thereof |
| WO2023124993A1 (en) * | 2021-12-29 | 2023-07-06 | 宁波激智科技股份有限公司 | Optical functional thin film |
-
2020
- 2020-10-29 CN CN202022462251.5U patent/CN213581654U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114023901A (en) * | 2021-10-27 | 2022-02-08 | 深圳市华星光电半导体显示技术有限公司 | Thin film packaging structure, preparation method thereof and display panel |
| WO2023124993A1 (en) * | 2021-12-29 | 2023-07-06 | 宁波激智科技股份有限公司 | Optical functional thin film |
| GB2626697A (en) * | 2021-12-29 | 2024-07-31 | Ningbo Exciton Tech Co Ltd | Optical functional thin film |
| CN114551759A (en) * | 2022-02-15 | 2022-05-27 | 深圳市华星光电半导体显示技术有限公司 | Cover plate structure, display module and preparation method thereof |
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