CN108987450A - Display panel and display device - Google Patents
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- CN108987450A CN108987450A CN201810847582.5A CN201810847582A CN108987450A CN 108987450 A CN108987450 A CN 108987450A CN 201810847582 A CN201810847582 A CN 201810847582A CN 108987450 A CN108987450 A CN 108987450A
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
- H10K59/353—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels characterised by the geometrical arrangement of the RGB subpixels
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
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Abstract
The application discloses a display panel and a display device, wherein the display panel comprises a substrate base plate; the light-emitting element comprises a first electrode and a second electrode which are mutually overlapped, and the second electrode is positioned on one side of the first electrode, which is far away from the substrate; the display panel comprises a first light-emitting element and a second light-emitting element which have different light-emitting colors, and in the direction perpendicular to the surface of the substrate base plate, the distance D1 between the first electrode of the first light-emitting element and the substrate base plate and the distance D2 between the first electrode of the second light-emitting element and the substrate base plate satisfy the following conditions: d1 > D2. The display panel and the display device provided by the embodiment of the application can effectively compensate the color cast problem of the light-emitting elements with different emergent light colors, and provide a better white balance display effect under a large visual angle or during curved surface display.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a display panel and a display device including the display panel.
Background
With the continuous development of display technologies, the requirements of consumers on display screens are continuously improved, various display layers are not grouped, and rapid development is achieved, for example, display screens such as liquid crystal display screens and organic light emitting display screens, and on the basis, display technologies such as 3D display, touch display technology, curved display, ultrahigh resolution display and peep-proof display are continuously emerging to meet the requirements of consumers.
For a full-color organic light emitting display panel, which includes a plurality of light emitting elements with different light emitting colors, however, because human eyes have different perceptibility to light with different colors, when observing under a large viewing angle, the light emitting efficiency of light with different colors changes differently, which results in a color cast phenomenon on a display picture under the large viewing angle, especially for a curved panel, the color cast phenomenon in a bending area is more serious than that in a normal display area because the viewing angle of the bending area is different from that in the normal display area, and therefore, how to solve the color cast phenomenon of the display panel under the large viewing angle, especially the color cast phenomenon in the bending area of the curved display screen, is a problem to be solved urgently in the field.
Disclosure of Invention
In view of the above, the present invention provides a display panel and a display device including the same, so as to solve the color shift problem of the display panel under a large viewing angle, especially the color shift problem of the curved display screen bending area, and provide a good display effect.
An aspect of an embodiment of the present invention provides a display panel, where the display panel includes an array substrate; the light-emitting element comprises a first electrode and a second electrode which are mutually overlapped, and the second electrode is positioned on one side of the first electrode, which is far away from the substrate; the display panel comprises a first light-emitting element and a second light-emitting element which have different light-emitting colors, and in the direction perpendicular to the surface of the substrate base plate, the distance D1 between the first electrode of the first light-emitting element and the substrate base plate and the distance D2 between the first electrode of the second light-emitting element and the substrate base plate satisfy the following conditions: d1 > D2.
Another aspect of the embodiments of the present invention provides a display device, including the display panel described above.
As can be seen from the above description, the display panel and the display device provided in the embodiments of the present invention, wherein the display panel includes the first light emitting element and the second light emitting element with different light colors, and a distance from the first electrode of the first light emitting element to the substrate is greater than a distance from the second light emitting element to the substrate, that is, a position of the first light emitting element relative to the substrate is higher than a position of the second light emitting element relative to the substrate, so that by setting a difference between positions of the two light emitting elements with different light colors relative to the substrate, light emitted by the light emitting element with a light emitting efficiency that varies greatly with a viewing angle can be compensated according to a variation of the light emitting efficiency of the light with the different light colors varying with the viewing angle, and a phenomenon that the display panel generates a picture distortion under a large viewing angle or under a bending condition can be avoided.
Drawings
Fig. 1 is a partial cross-sectional view of a display panel according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a display panel according to an embodiment of the present invention;
FIG. 3 is a partial schematic view of a display panel according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of another display panel provided in an embodiment of the invention;
fig. 5 is a schematic diagram of a display device according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, the present invention is further described with reference to the accompanying drawings and examples.
It should be noted that in the following description, specific details are set forth in order to provide a thorough understanding of the present invention. The invention can be implemented in a number of ways different from those described herein and similar generalizations can be made by those skilled in the art without departing from the spirit of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
Referring to fig. 1, fig. 1 is a partial cross-sectional view of a display panel according to an embodiment of the present invention, wherein the display panel 10 includes a substrate 100; a light emitting element including a first electrode 110 and a second electrode 120 overlapping each other, the second electrode 120 being located on a side of the first electrode 110 away from the substrate 100; the display panel comprises a first light-emitting element 101 and a second light-emitting element 102 which have different light-emitting colors, and in a direction perpendicular to the surface of the substrate 100, a distance D1 between a first electrode 110 of the first light-emitting element 101 and the substrate 100 and a distance D2 between the first electrode 110 of the second light-emitting element 102 and the substrate 100 satisfy that: d1 > D2.
It should be noted that the display panel 10 provided in the embodiment of the present invention may be an organic light emitting display panel, in this case, the light emitting element may be an organic light emitting element, the organic light emitting element may include an anode and a cathode that are oppositely disposed, and an organic light emitting layer and an organic functional layer that are located between the anode and the cathode, the anode may be the first electrode 110, the cathode may be the second electrode 120, and the organic functional layer may be an electron transport layer, an electron injection layer, a hole transport layer, a hole injection layer, or the like, and may also include other auxiliary functional film layers. In addition, the display panel may also be other types of display panels, such as a quantum dot light emitting display panel, a nano-chip light emitting display panel, and the like, and accordingly, the light emitting element may be a quantum dot light emitting element or a nano-chip light emitting element, and the like, which is not limited in this embodiment.
In addition, in this embodiment, as shown in fig. 1, the display panel 10 further includes a driving element 111 for controlling the light-to-dark conversion of the light emitting element, which is not described in detail in this embodiment.
Here, the mechanism of the above-mentioned structure for compensating the color shift phenomenon is explained, because the first light emitting device 101 and the second light emitting device 102 have different light emitting colors and different color specific sensitivities in human eyes, for example, the specific sensitivity of green light in human eyes is larger than the specific sensitivity of red light and blue light in human eyes, and further, because the light emitted by the light emitting devices reaches the air through other film layers in the display panel and then enters human eyes, a process of propagating from the optically dense medium (panel film layer) to the optically thinner medium (air) is experienced, and according to the law of refraction, when the light is transmitted from the optically dense medium to the optically thinner medium, the refraction angle is larger than the incident angle, and when the incident angle is larger than a certain angle, the total reflection occurs to part of the light, thereby causing the light emitting efficiency to decrease, and according to the reason that the specific sensitivities of the different colors in human eyes are different, the loss of light of different colors is reflected differently in the human eye, e.g. less green drop, but a significant deviation of the red and blue colors, which results in a greenish color at large viewing angles, therefore, in order to improve the color shift phenomenon, in the embodiment of the invention, the position of the first light emitting element 101 with respect to the substrate is raised, thus, at a large viewing angle, since the positions of the first light emitting element 101 and the second light emitting element 102 are different with respect to the human eye, that is, when the areas of the first light emitting element 101 and the second light emitting element 102 are the same, the first light emitting element 101 is seen larger by human eyes, and thus, if the color shift phenomenon of the first light emitting element 101 at a large viewing angle is severe, it can be set by its position relative to the human eye, so that its display area in the human eye is larger, thereby compensating the light loss of the film under a large visual angle and still obtaining better white balance under the large visual angle.
As can be seen from the above description, in the display panel and the display device provided in the embodiments of the present invention, the display panel includes the first light emitting element and the second light emitting element, which have different light emitting colors, and in a direction perpendicular to the surface of the substrate, a distance between the first electrode of the first light emitting element and the substrate is greater than a distance between the first electrode of the second light emitting element and the substrate.
Alternatively, referring to fig. 2, fig. 2 is a schematic diagram of a display panel according to an embodiment of the present invention, the display panel 10 includes a bending region 200 and a non-bending region 201, and the first light emitting device 101 and the second light emitting device 102 are located in the bending region 200, so that when the display panel is bent, the observation visual angle of the bending area is different from that of the non-bending area, the change of the observation visual angle of the bending area can cause the change of the light emitting efficiency of the light emitting elements with different light emitting colors in the bending area, the variation of the light emitting efficiency of the light emitting elements with different light emitting colors is different according to the colors, so that the color cast of the bending area is more likely to occur than that of the non-bending area, therefore, in the present embodiment, the first light emitting device 101 and the second light emitting device 102 are disposed in the bending region 200, therefore, the color cast phenomenon in the bending area can be compensated, and the normal display of pictures in the bending area is ensured.
Optionally, in this embodiment, the light emitting color of the first light emitting element 101 is red or blue, and the light emitting color of the second light emitting element 102 is green, as described above, because green has a larger specific visual sensation in human eyes, and the light loss relative to red and blue is smaller at a large viewing angle, therefore, in this embodiment, the first light emitting element 101 is configured as a red or blue light emitting element, so that the distance from human eyes is greater than the distance from green light emitting elements to human eyes, thereby compensating the loss of red or blue light, and enabling the display panel to reach a better white balance state at a large viewing angle. In particular, in the embodiment, the light emitting color of the first light emitting device 101 is red, and the light emitting color of the second light emitting device 102 is green, because the light loss of the red light emitting device is most obvious at a large viewing angle and the light loss of the green light emitting device is less obvious at a large viewing angle when the areas of the light emitting devices are equal, the light loss of the red light emitting device is compensated by the above structural design.
In addition, with continued reference to fig. 1, the display panel further includes a third light emitting element 103, the color of light emitted from the third light emitting element 103 is different from the color of light emitted from the first light emitting element 101 and the second light emitting element 102, and the distance D3 between the first electrode 110 of the third light emitting element 103 and the substrate 100 satisfies: d2 is more than or equal to D3 and less than D1. Generally, in a display panel, to achieve a final white balance, it is necessary to include light emitting elements of at least three different light emitting colors, such as red/green/blue, red/green/blue/white, or red/green/blue/yellow, etc., in this embodiment, by setting the size relationship among D1, D2, and D3, the problem of color shift of the light emitting elements of various light emitting colors is compensated, as shown in fig. 1, which is the case of D2 < D1, and D2 ═ D3, in other embodiments of this embodiment, referring to fig. 3, fig. 3 is a partial schematic diagram of a display panel provided by an embodiment of the present invention, wherein important structures related to this embodiment are exemplarily drawn, and other structures are omitted, but should not be understood as a limitation to a specific structure of this embodiment, wherein, d3 < D2 < D1, namely the positions of the light-emitting elements of the three different emergent light colors relative to the substrate are different, so that the adjustment can be better realized through the respective color cast condition of each color.
Further, in the above embodiment, it is optional that the light emitting color of the first light emitting element 101 is red, the light emitting color of the second light emitting element 102 is blue, and the light emitting color of the third light emitting element is green, because as described above, when the areas of the light emitting elements are the same, the light loss of the red light emitting element is the largest, and then the light loss is blue, and then the light loss is green again, so that according to the foregoing mechanism, the positions of the green light emitting element, the blue light emitting element, and the red light emitting element with respect to the substrate 100 are sequentially increased, thereby performing adjustment and compensation according to the color shift problem of each color light emitting element.
In the present embodiment, with continuing reference to fig. 3, further, the distance D3 between the first electrode 110 of the third light emitting element 103 and the substrate 100 further satisfies: D2-D3 > D1-D2, that is, the difference between the positions of the first light emitting element 101 and the second light emitting element 102 relative to the substrate 100 is smaller than the difference between the positions of the second light emitting element 102 and the third light emitting element 103 relative to the substrate 100, because, according to the common knowledge in the art, the light loss of the blue light emitting element and the red light emitting element is more serious than that of the green light emitting element and the red light emitting element is more serious than that of the blue light emitting element at a large viewing angle, the difference between the distances of the red light emitting element and the blue light emitting element from the substrate is smaller than that of the blue light emitting element from the substrate, so that the light emitting elements with three different light emitting colors can be compensated.
In addition, with continuing reference to fig. 3, optionally, in this embodiment, the light emitting area S1 of the first light emitting element 101 and the light emitting area S2 of the second light emitting element 102 satisfy: s1 > S2. Because the distance from the first light-emitting element 101 to the substrate 100 is greater than the distance from the second light-emitting element 102 to the substrate 100, and the light loss of the first light-emitting element 101 at a large viewing angle is more serious than the light loss of the second light-emitting element 102 at a large viewing angle, in addition to the above compensation method, the light-emitting area of the first light-emitting element 101 may be set to be greater than the light-emitting area of the second light-emitting element 102, so that the area reflected by the first light-emitting element 101 in human eyes is larger, thereby further compensating the color cast problem at a large viewing angle.
The above embodiment is provided under the condition that the color shift phenomena of the first light emitting element 101 and the second light emitting element 102 under a large viewing angle are different greatly, if the color shift phenomena of the first light emitting element 101 and the second light emitting element 102 under a large viewing angle are different slightly, the requirement can be met only by setting the respective position relations of the first light emitting element 101 and the second light emitting element 102 relative to the substrate 100, the light emitting areas of the first light emitting element 101 and the second light emitting element 101 can be set to be equal, even under a certain condition, the light emitting area S2 of the second light emitting element 102 needs to be set to be larger than the light emitting area S1 of the first light emitting element 101, so that the color shift phenomena of the first light emitting element 101 and the second light emitting element under.
In addition, in this embodiment, as shown in fig. 1, the display panel 10 includes the pixel defining layer 130, the pixel defining layer 130 includes opening regions 1301, and a spacer region 1302 located between the opening regions, the light emitting element is located in the opening region 1301, the first light emitting element 101 is disposed adjacent to the second light emitting element 102, the spacer region 1302 of the pixel defining layer 130 between the first light emitting element 101 and the second light emitting element 102 includes a first region 1302a and a second region 1302b, and a distance H1 between a surface of the first region 1302a and the substrate base plate 100 is greater than a distance H2 between a surface of the second region 1302b and the substrate base plate 100. This is because, after the first electrode 110 of the first light emitting element 101 is raised from the position of the substrate 100, in order to ensure normal display of the display panel, the position of the spacer 1302a of the pixel defining layer 130 around the first light emitting element 101 is also raised accordingly, and thus, a step difference occurs on the pixel defining layer 130 between the first light emitting element 101 and the second light emitting element 102.
In another embodiment of this embodiment, the spacer region 1302b of the pixel defining layer 130 around the second light emitting element 102 may be thickened to be flush with the spacer region 1302a of the pixel defining layer 130 around the first light emitting element 101, so that normal display of the display panel may be ensured.
Optionally, in this embodiment, as shown in fig. 1, the display panel 10 further includes a flat layer 140 located between the substrate 100 and the first electrode 110, a first flat layer 1401 is located between the first light emitting element 101 and the second light emitting element 102 and the substrate 100, and a second flat layer 1402 is further located between the first light emitting element 101 and the first flat layer 1401, because the distance between the first electrode 110 of the first light emitting element 101 and the substrate 100 is greater than the distance between the first electrode 110 of the second light emitting element 102 and the substrate 100, in this embodiment, the structure is implemented by setting different thicknesses of the flat layers, the second flat layer 1402 is further disposed on the first flat layer 1401, and then the first electrode 110 of the first light emitting element 101 is further disposed, so as to achieve the purpose of raising the first light emitting element 101, the material of the first flat layer 1401 may be the same as the material of the second flat layer 1402, it may also be different, and this embodiment is not described in detail herein.
In this embodiment, it should be further described that, optionally, the first electrode 110 may include a reflective layer, the second electrode 120 is a semitransparent electrode, and the display panel 10 emits light from the first electrode 110 toward the second electrode 120, so that by setting the direction of the first electrode 110 toward the second electrode 120 as the light emitting direction, the area reflected by the first light emitting element 101 in human eyes is larger, thereby ensuring that the above structure can improve the color shift. Specifically, the first electrode 110 may be an anode, and includes a first conductive layer, a second conductive layer, and a reflective layer located between the first conductive layer and the second conductive layer, where the first conductive layer and the second conductive layer may be transparent layers, and the material may be indium tin oxide, indium zinc oxide, or the like, or may be other materials, and the reflective layer may be silver, or may be other materials with reflective properties. The second electrode 120 may have a one-layer structure, and the material of the second electrode may be silver or magnesium-silver alloy, and the second electrode 120 may also have a two-layer structure, where one layer is silver or magnesium-silver alloy, and another layer is further disposed on a side close to the first electrode 110, and the material of the second electrode may be a rare earth metal simple substance or an alkaline earth metal simple substance, and specifically may be Yb, Sm, and the like.
In addition, optionally, in this embodiment, referring to fig. 4, fig. 4 is a schematic diagram of another display panel provided by the embodiment of the present invention, wherein the bending region 200 includes an edge bending region 210 and a central bending region 220, the edge bending region 210 is located between the non-bending region 201 and the central bending region 220, and a distance between the first electrode 110 of the first light emitting element 101 in the central bending region 220 and the substrate base plate 100 is greater than a distance between the first electrode 110 of the first light emitting element 101 in the edge bending region 210 and the substrate base plate 100. As shown in the display panel bending region in fig. 4, the edge bending region 210 starts to bend gradually, and the bending degree of the display panel gradually increases from the edge bending region 210 to the center bending region 220, so that the viewing angle of the light emitting element of the center bending region 220 relative to the observer is larger than that of the edge bending region, and therefore, the color shift phenomenon is more obvious, and therefore, the distance from the first electrode 110 of the first light emitting element 101 of the center bending region 220 to the substrate 100 is larger than that from the first electrode 110 of the first light emitting element 101 of the edge bending region 210 to the substrate 100 in this embodiment, so as to adjust the color shift problem of the edge bending region 210 and the center bending region 220, respectively, and each region in the bending region can achieve a better white balance display effect.
Further, in the present embodiment, in the bending region 200, the distance between the first electrode 110 of the first light emitting element 101 and the substrate gradually increases from the edge bending region 210 to the center bending region 220, and as described above, the bending degree in the bending region gradually increases from the edge bending region 210 to the center bending region 220, so that the color shift problem of each region in the bending region 200 can be further adjusted by such limitation, and the white balance display effect in the bending region is further ensured.
In another aspect of the embodiments of the present invention, referring to fig. 5, fig. 5 is a schematic diagram of a display device according to an embodiment of the present invention, where a display device 20 includes a display panel 10, the display panel 10 is a display panel described in any of the above embodiments, the display device 20 may be a display device such as a mobile phone, a notebook computer, a television, an intelligent wearable display device, and the like, and the display device using the display panel described in the embodiment of the present invention is not limited in this embodiment.
As can be seen from the above description, the display panel and the display device provided in the embodiments of the present invention, wherein the display panel includes the first light emitting element and the second light emitting element with different light colors, and a distance from the first electrode of the first light emitting element to the substrate is greater than a distance from the second light emitting element to the substrate, that is, a position of the first light emitting element relative to the substrate is higher than a position of the second light emitting element relative to the substrate, so that by setting a difference between positions of the two light emitting elements with different light colors relative to the substrate, light emitted by the light emitting element with a light emitting efficiency that changes greatly with a viewing angle can be compensated according to a change situation of the light emitting efficiency of the light with the different light colors along with the viewing angle, and a phenomenon of image distortion of the display panel under a large viewing angle or under a bending situation can be avoided.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (13)
1. A display panel, comprising
A substrate base plate;
the light-emitting element comprises a first electrode and a second electrode which are overlapped with each other, and the second electrode is positioned on one side of the first electrode, which is far away from the substrate base plate; wherein,
the display panel comprises a first light-emitting element and a second light-emitting element which have different light-emitting colors, and in a direction perpendicular to the surface of the substrate, a distance D1 between the first electrode of the first light-emitting element and the substrate and a distance D2 between the first electrode of the second light-emitting element and the substrate satisfy that: d1 > D2.
2. The display panel according to claim 1, wherein the display panel comprises a bending region and a non-bending region, and the first light-emitting element and the second light-emitting element are located in the bending region.
3. The display panel according to claim 1, wherein the first light-emitting element emits light in a red or blue color, and the second light-emitting element emits light in a green color.
4. The display panel according to claim 1, wherein the display panel further comprises a third light-emitting element having a light emission color different from that of each of the first and second light-emitting elements, and wherein
A distance D3 between the first electrode of the third light-emitting element and the base substrate satisfies: d2 is more than or equal to D3 and less than D1.
5. The display panel according to claim 4, wherein the first light-emitting element emits light in a red color, the second light-emitting element emits light in a blue color, and the third light-emitting element emits light in a green color.
6. The display panel according to claim 4 or 5, wherein a distance D3 between the first electrode of the third light-emitting element and the base substrate satisfies:
D2-D3＞D1-D2。
7. the display panel according to claim 1, wherein a light-emitting area S1 of the first light-emitting element and a light-emitting area S2 of the second light-emitting element satisfy: s1 > S2.
8. The display panel according to claim 1, wherein the display panel comprises a pixel defining layer including opening regions at which the light emitting elements are located, and a spacer region located between the opening regions;
the first light emitting element and the second light emitting element are disposed adjacent to each other, the spacer of the pixel defining layer between the first light emitting element and the second light emitting element includes a first region and a second region, and a distance between a surface of the first region and the substrate base plate is greater than a distance between a surface of the second region and the substrate base plate.
9. The display panel according to claim 1, wherein the display panel comprises a planarization layer between the substrate base and the first electrode, wherein a first planarization layer is included between the first and second light-emitting elements and the substrate base, and wherein a second planarization layer is further included between the first light-emitting element and the first planarization layer.
10. The display panel according to claim 1, wherein the first electrode comprises a reflective layer, wherein the second electrode is a translucent electrode, and wherein the display panel emits light from the first electrode toward the second electrode.
11. The display panel according to claim 2, wherein the bending region comprises an edge bending region and a central bending region, the edge bending region is located between the non-bending region and the central bending region, and a distance between the first electrode of the first light-emitting element in the central bending region and the substrate base plate is greater than a distance between the first electrode of the first light-emitting element in the edge bending region and the substrate base plate.
12. The display panel according to claim 11, wherein a distance between the first electrode of the first light-emitting element and the substrate base plate in the bent region gradually increases from the edge bent region to the center bent region.
13. A display device characterized by comprising the display panel according to any one of claims 1 to 12.
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| CN110137371A (en) * | 2019-05-08 | 2019-08-16 | 上海天马有机发光显示技术有限公司 | Display panel and display device |
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| CN110337722A (en) * | 2019-05-24 | 2019-10-15 | 京东方科技集团股份有限公司 | Organic electroluminescence display panel, color shift improvement and preparation method, and display device |
| CN110379934A (en) * | 2019-07-12 | 2019-10-25 | 昆山国显光电有限公司 | A kind of display panel and display device |
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| CN111969024A (en) * | 2020-08-28 | 2020-11-20 | 京东方科技集团股份有限公司 | OLED display panel, display device and display panel preparation method |
| CN112397629A (en) * | 2019-08-12 | 2021-02-23 | 深圳光峰科技股份有限公司 | Light emitting member, display panel and display device |
| CN112542500A (en) * | 2020-12-03 | 2021-03-23 | 武汉华星光电半导体显示技术有限公司 | Display panel and manufacturing method thereof |
| CN113113452A (en) * | 2021-03-17 | 2021-07-13 | 武汉华星光电半导体显示技术有限公司 | Display panel and preparation method thereof |
| US20230042855A1 (en) * | 2021-08-09 | 2023-02-09 | Samsung Display Co., Ltd. | Display device and method of fabricating the same |
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