CN213845322U - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN213845322U CN213845322U CN202023092114.3U CN202023092114U CN213845322U CN 213845322 U CN213845322 U CN 213845322U CN 202023092114 U CN202023092114 U CN 202023092114U CN 213845322 U CN213845322 U CN 213845322U
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Abstract
The utility model discloses a display panel and a display device, wherein the display panel comprises a substrate and a display function layer, the display function layer is arranged on the substrate, and the display panel also comprises an antireflection film and a photoluminescence layer; the photoluminescent layer is arranged on one side of the substrate opposite to the display functional layer, or the photoluminescent layer is arranged on the display functional layer; the antireflection film is arranged on one side, far away from the display function layer, of the photoluminescence layer and is used for increasing the transmittance of light. According to the technical scheme, the antireflection film and the photoluminescent layer are arranged, the photoluminescent layer can compensate light rays with specific wavelengths absorbed or reflected by the material, and the chromatic aberration of an object on the other side of the display panel observed by a user is reduced. Meanwhile, the transmittance of light rays is further increased by the antireflection film, and the antireflection film can reinforce not only light emitted by the photoluminescent layer, but also light emitted by the ambient light and the display functional layer.
Description
Technical Field
The utility model relates to a show technical field, especially relate to a display panel and display device.
Background
With the development of display technology, various new technologies are emerging, and the transparent display technology is receiving more and more attention due to the characteristic of the transparent display panel and its unique application. The OLED display panel has the self-luminous characteristic, so that the OLED display panel has more possibilities on transparent display, but due to the material limitation of the transparent OLED display panel, the transmittance of 100% cannot be formed, and how to improve the transmittance of the transparent display panel is the direction of the panel which needs to be optimized for a long time.
The ambient light belongs to mixed color light, and the use of glue when different membranous layers and sheets in the display panel are pasted can cause inevitable loss to the light that sees through, further causes the whole transmittance of display panel to descend. Meanwhile, different materials have different absorptances for light with different wavelengths, for example, OC material (organic insulating photoresist) has different absorptances for RGB three-color wavelengths, and the loss of blue color is the largest, so the whole color of the display panel is yellow.
For the article placed behind the display panel, a user observes the article in front of the display panel, and finds that the article has color difference, namely, the existing transparent display panel cannot completely display the original color of the article, namely, the appearance is not transparent enough, so that the display effect in the practical application scene is reduced.
SUMMERY OF THE UTILITY MODEL
Therefore, it is desirable to provide a display panel and a display device, which solve the problem of poor transmittance of the display panel.
In order to achieve the above object, this embodiment provides a display panel, which includes a substrate and a display functional layer, where the display functional layer is disposed on the substrate, and the display panel further includes an antireflection film and a photoluminescent layer;
the photoluminescent layer is arranged on one side of the substrate opposite to the display functional layer, or the photoluminescent layer is arranged on the display functional layer;
the antireflection film is arranged on one side, far away from the display function layer, of the photoluminescence layer and is used for increasing the transmittance of light.
Further, the packaging structure also comprises a packaging cover plate;
the display function layer is provided with the packaging cover plate;
the photoluminescent layer is arranged between the display function layer and the packaging cover plate, or the photoluminescent layer is arranged on one side, far away from the display function layer, of the packaging cover plate.
Further, the device also comprises a protective cover plate;
the packaging cover plate is provided with the protection cover plate;
the photoluminescent layer is arranged between the packaging cover plate and the protective cover plate, or the photoluminescent layer is arranged on one side of the protective cover plate, which is opposite to the packaging cover plate.
Furthermore, an antireflection film is arranged on one side, opposite to the packaging cover plate, of the protection cover plate, and an antireflection film is also arranged on one side, opposite to the display function layer, of the substrate.
Further, the photoluminescent layer is any one of a long afterglow fluorescent coating, a fluorescent film and fluorescent glass.
Furthermore, a white space antireflection area is also included;
the white-left anti-reflection area is arranged on the substrate and is positioned on one side of the display function layer.
Furthermore, a space is reserved between the projection of the photoluminescent layer and the projection of the white light-reflecting area, and the direction of the projection is perpendicular to the substrate.
Further, the projection of the display function layer is located within the projection of the photoluminescent layer, the direction of the projection being perpendicular to the substrate.
Further, the display panel is an OLED display panel.
The present embodiment further provides a display device including the display panel according to any one of the above embodiments.
Different from the prior art, the technical scheme is that the antireflection film and the photoluminescent layer are arranged, the photoluminescent layer can compensate light rays with specific wavelengths absorbed or reflected by the material, and the chromatic aberration of an object on the other side of the display panel observed by a user is reduced. Meanwhile, the transmittance of light rays is further increased by the antireflection film, and the antireflection film can reinforce not only light emitted by the photoluminescent layer, but also light emitted by the ambient light and the display functional layer. The technical scheme greatly optimizes the light transmission effect of the transparent display panel, reduces the color difference of the object, and ensures that the user can still clearly see the color of the object through the display panel even if the user is on one side of the display panel and the object is on the other side of the display panel.
Drawings
Fig. 1 is a schematic cross-sectional view of the display panel in this embodiment;
FIG. 2 is a schematic cross-sectional view illustrating a structure of the photoluminescent layer in this embodiment with a gap between the projection of the photoluminescent layer and the projection of the left-white anti-reflection region;
FIG. 3 is a schematic cross-sectional view illustrating a functional display area according to the present embodiment;
FIG. 4 is a characteristic diagram of the different long-afterglow fluorescent coatings of the present embodiment;
fig. 5 is a schematic structural diagram of a user viewing an object through a display panel in the embodiment.
Description of reference numerals:
1. a substrate;
2. a display functional layer;
21. a thin film transistor array;
22. a pixel light emitting layer;
3. a photoluminescent layer;
4. an anti-reflection film;
41. a first antireflection film;
42. a second antireflection film;
5. packaging the cover plate;
6. a protective cover plate;
7. leaving a white anti-reflection area.
Detailed Description
To explain technical contents, structural features, and objects and effects of the technical solutions in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.
Referring to fig. 1 to 5, the present embodiment provides a display panel, which includes a substrate 1 and a display functional layer 2, where the display functional layer 2 is disposed on the substrate 1, the display functional layer 2 includes a pixel light emitting layer 22, a thin film transistor array 21, a driving trace, and the like, and the display functional layer 2 is used to implement a display function of the display panel. The problem that the color of the display panel has chromatic aberration due to the fact that the film layer of the display panel can cause loss to the transmitted light is solved. The display panel further comprises an antireflection film 4 and a photoluminescent layer 3. The photoluminescent layer 3 is provided on the side of the substrate 1 opposite to the display functional layer 2, or the photoluminescent layer 3 is provided on the display functional layer 2, although the photoluminescent layer 3 may be provided on both the side of the substrate 1 opposite to the display functional layer 2 and on the display functional layer 2. The projection of the display functional layer 2 is located within the projection of the photoluminescent layer 3, the direction of the projection being perpendicular to the substrate 1. The photoluminescent layer 3 will emit light and the photoluminescent layer 3 can compensate for light of a specific wavelength that is absorbed or reflected by the material. The antireflection film 4 is arranged on one side of the photoluminescent layer 3, which is far away from the display functional layer 2, and the antireflection film 4 is used for increasing the transmittance of light rays.
According to the technical scheme, the antireflection film and the photoluminescent layer are arranged, the photoluminescent layer can compensate light rays with specific wavelengths absorbed or reflected by the material, and the chromatic aberration of an object on the other side of the display panel observed by a user is reduced. Meanwhile, the transmittance of light rays is further increased by the antireflection film, and the antireflection film can reinforce not only light emitted by the photoluminescent layer, but also light emitted by the ambient light and the display functional layer. The technical scheme greatly optimizes the light transmission effect of the transparent display panel, reduces the color difference of the object, and ensures that the user can clearly see the color of the object through the display panel even if the user is on one side of the display panel and the object is on the other side of the display panel, and the structure is shown in fig. 5.
In this embodiment, in order to protect the display function layer and prevent the electrical performance degradation caused by the corrosion of the circuit of the display function layer by the impurities in the air, a package cover plate 5 is further included, and the structure is as shown in fig. 1. The pixel light emitting layer 22 is provided with the package cover 5. The packaging cover plate 5 plays a role in fixing and sealing the display function layer, and therefore the stability of the display function layer is guaranteed. Because of the addition of the encapsulating cover 5, the photoluminescent layer is provided between the pixel luminescent layer 22 (i.e. a part of the display functional layer) and the encapsulating cover 5, or on the side of the encapsulating cover 5 remote from the pixel luminescent layer 22. Of course, a photoluminescent layer may be disposed between the pixel light emitting layer 22 and the package cover 5 on a side of the package cover 5 away from the pixel light emitting layer 22 to increase the compensation for light.
In this embodiment, in order to further protect the display function layer, the package cover plate, and the like, a protective cover plate 6 is further included, and the structure is as shown in fig. 1. The packaging cover plate is provided with the protection cover plate 6. The photoluminescent layer 3 is arranged between the package cover plate and the protective cover plate 6, and the structure is as shown in fig. 1, or the photoluminescent layer is arranged on one side of the protective cover plate 6 opposite to the package cover plate. Of course, a photoluminescent layer may be disposed between the encapsulation cover plate and the protection cover plate 6 and on the protection cover plate 6 at a side opposite to the encapsulation cover plate to increase the compensation for light.
In a further embodiment, because the display panel is provided with the substrate and the protective cover plate, one side of the protective cover plate, which is opposite to the encapsulation cover plate, is provided with an antireflection film, and one side of the substrate, which is opposite to the display function layer, is also provided with an antireflection film. Certainly, one side of the protective cover plate opposite to the packaging cover plate and one side of the substrate opposite to the display function layer are both provided with one antireflection film, and the display panel can greatly improve the transmittance of light rays only by the two antireflection films. The antireflection film may be a single-layer antireflection film or a multilayer antireflection film.
To summarize the above, the antireflection film disposed on the substrate on the side opposite to the display function layer may be referred to as a first antireflection film 41, and the antireflection film disposed on the protective cover on the side opposite to the package cover may be referred to as a second antireflection film 42. A substrate is disposed on the first antireflection film 41, a display function layer is disposed on the substrate, an encapsulation cover plate is disposed on the display function layer, a protection cover plate is disposed on the encapsulation cover plate, and a second antireflection film 42 is disposed on the protection cover plate. Then, the photoluminescent layer may be disposed between the first antireflection film and the substrate, between the display functional layer and the encapsulation cover plate, between the encapsulation cover plate and the protection cover plate, or between the protection cover plate and the second antireflection film. Fig. 1 and 2 only show that the photoluminescent layer is disposed between the package cover plate and the protective cover plate, and the photoluminescent layers at the rest positions are not shown in the drawings.
In this embodiment, the photoluminescent layer is any one of a long persistence fluorescent coating, a fluorescent thin film, and a fluorescent glass. The fluorescent film and the fluorescent glass may be photoluminescent materials. It should be noted that the long persistence phosphor coating (alternatively referred to as a long persistence phosphor) is a photoluminescent material, which is a substance that absorbs energy and continues to emit light after excitation ceases. The long afterglow fluorescent coating can be aluminate base long afterglow luminescent material, silicate base long afterglow luminescent material, oxysulfide base long afterglow luminescent material, titanate base long afterglow luminescent material, phosphate base long afterglow luminescent material, organic long afterglow luminescent material, rare earth doped long afterglow luminescent material, etc. It should be noted that, the main emission peak can be determined according to the light transmittance test of the display panel. Referring to fig. 4, for example: based on SrAl2O4Eu, Dy long afterglow fluorescent coating has main emission peak 520nm, which emits green light for over 60 hr; based on Zn3Ga2Ge2O10Cr, which mainly emits red light and emits light for more than 360 hours, has a main emission peak of 700nm (nanometers).
In this embodiment, in order to achieve the transparent effect of the display panel, a white-left anti-reflection region 7 is further included, and the structure is as shown in fig. 1. The white-left antireflection region 7 is arranged on the substrate, and the white-left antireflection region 7 is positioned on one side of the display function layer. The part of the white-left anti-reflection region 7 which is not provided with light-shielding components such as transistors and the like is arranged as far as possible, so that light passing through the white-left anti-reflection region 7 can not be blocked, and a user can observe an object on the other surface of the display panel.
Preferably, in order not to affect the light transmission of the white light-leaving anti-reflection region, a space is provided between the projection of the photoluminescent layer and the white light-leaving anti-reflection region, the direction of the projection is perpendicular to the substrate, and the structure is shown in fig. 2. Originally, the photoluminescent layers and the white-left anti-reflection regions are different layers, so that the white-left anti-reflection region is also arranged between two adjacent photoluminescent layers, and the structure is shown in fig. 2.
Of course, the photoluminescent layer may be provided over the entire surface, and the structure is shown in fig. 1. But it is most reasonable to have a photo-luminescent layer on the opaque tft array 21 and the driving traces.
In this embodiment, the display panel is an OLED display panel, and the OLED display panel is made by a transparent process, so that the OLED display panel is transparent.
The display panel is divided into sub-pixels of multiple colors, the photoluminescent layer is also divided into a plurality of luminescent regions, each sub-pixel corresponds to one luminescent region, and one luminescent region can emit light of the color of the corresponding sub-pixel. For example: the sub-pixel emits red light, and then the light emitting region corresponding to the sub-pixel can emit red light; a sub-pixel emits blue light, and the light emitting region corresponding to the sub-pixel may emit blue light. Since the light emitting regions in the photoluminescent layers of different colors emit light of different colors, color display can be achieved regardless of whether the ambient light is sufficient or insufficient.
Please refer to fig. 3, the Thin Film Transistor array 21 includes a Thin Film Transistor (TFT) including a gate electrode, an active layer, a drain electrode, a source electrode, and the like, and the TFT is used as a switch to drive the liquid crystal pixel to achieve the characteristics of high speed, high brightness, and high contrast. The pixel emission layer 22 serves as a sub-pixel of the display panel for emitting different types of light, such as red light, green light, and blue light.
The embodiment provides a display device, which can be any product or component with a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, and the like. The display device comprises the display panel in any one of the above embodiments.
It should be noted that, although the above embodiments have been described herein, the scope of the present invention is not limited thereby. Therefore, based on the innovative concept of the present invention, the changes and modifications of the embodiments described herein, or the equivalent structure or equivalent process changes made by the contents of the specification and the drawings of the present invention, directly or indirectly apply the above technical solutions to other related technical fields, all included in the protection scope of the present invention.
Claims (10)
1. A display panel comprises a substrate and a display function layer, wherein the display function layer is arranged on the substrate, and the display panel is characterized by also comprising an antireflection film and a photoluminescent layer;
the photoluminescent layer is arranged on one side of the substrate opposite to the display functional layer, or the photoluminescent layer is arranged on the display functional layer;
the antireflection film is arranged on one side, far away from the display function layer, of the photoluminescence layer and is used for increasing the transmittance of light.
2. The display panel according to claim 1, further comprising an encapsulating cover;
the display function layer is provided with the packaging cover plate;
the photoluminescent layer is arranged between the display function layer and the packaging cover plate, or the photoluminescent layer is arranged on one side, far away from the display function layer, of the packaging cover plate.
3. The display panel according to claim 2, further comprising a protective cover plate;
the packaging cover plate is provided with the protection cover plate;
the photoluminescent layer is arranged between the packaging cover plate and the protective cover plate, or the photoluminescent layer is arranged on one side of the protective cover plate, which is opposite to the packaging cover plate.
4. The display panel according to claim 3, wherein an antireflection film is disposed on a side of the protective cover plate opposite to the encapsulation cover plate, and an antireflection film is disposed on a side of the substrate opposite to the display function layer.
5. The display panel according to claim 1, 2 or 3, wherein the photoluminescent layer is any one of a long persistence fluorescent coating, a fluorescent thin film, and a fluorescent glass.
6. The display panel according to claim 1, further comprising a white-left anti-reflection region;
the white-left anti-reflection area is arranged on the substrate and is positioned on one side of the display function layer.
7. The display panel according to claim 6, wherein a projection of the photoluminescent layer is spaced from a projection of the white space antireflection region, and the direction of the projection is perpendicular to the substrate.
8. A display panel as claimed in claim 1 characterized in that the projection of the display functional layer is located within the projection of the photoluminescent layer, the direction of the projection being perpendicular to the substrate.
9. The display panel according to claim 1, wherein the display panel is an OLED display panel.
10. A display device comprising the display panel according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023092114.3U CN213845322U (en) | 2020-12-21 | 2020-12-21 | Display panel and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023092114.3U CN213845322U (en) | 2020-12-21 | 2020-12-21 | Display panel and display device |
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| Publication Number | Publication Date |
|---|---|
| CN213845322U true CN213845322U (en) | 2021-07-30 |
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| CN202023092114.3U Active CN213845322U (en) | 2020-12-21 | 2020-12-21 | Display panel and display device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114583082A (en) * | 2022-02-24 | 2022-06-03 | 深圳市华星光电半导体显示技术有限公司 | Display panel, manufacturing method thereof and display device |
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2020
- 2020-12-21 CN CN202023092114.3U patent/CN213845322U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114583082A (en) * | 2022-02-24 | 2022-06-03 | 深圳市华星光电半导体显示技术有限公司 | Display panel, manufacturing method thereof and display device |
| CN114583082B (en) * | 2022-02-24 | 2023-12-01 | 深圳市华星光电半导体显示技术有限公司 | Display panel, manufacturing method thereof and display device |
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