CN114843326B - display panel - Google Patents
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- CN114843326B CN114843326B CN202210448830.5A CN202210448830A CN114843326B CN 114843326 B CN114843326 B CN 114843326B CN 202210448830 A CN202210448830 A CN 202210448830A CN 114843326 B CN114843326 B CN 114843326B
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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
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
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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
- H10K50/84—Passivation; Containers; Encapsulations
- H10K50/844—Encapsulations
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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
- H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
- H10K50/865—Arrangements for improving contrast, e.g. preventing reflection of ambient light comprising light absorbing layers, e.g. light-blocking layers
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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
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/122—Pixel-defining structures or layers, e.g. banks
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
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Abstract
The application discloses a display panel, which is provided with a plane display area and a curved surface display area positioned at the periphery of the plane display area, and comprises: the display substrate comprises a plurality of pixel units which are arranged in the plane display area and the curved surface display area in an array manner, and each pixel unit comprises at least three sub-pixel units with different colors which are arranged at intervals; the packaging layer is arranged in the light emitting direction of the display substrate and comprises a first inorganic packaging layer, a first organic packaging layer and a second inorganic packaging layer which are sequentially stacked along the light emitting direction far away from the display substrate; wherein the thickness of the first organic encapsulation layer in the curved display area is smaller than the thickness of the first organic encapsulation layer in the planar display area. The brightness attenuation of the curved surface display area can be effectively slowed down, so that the brightness difference between the plane display area and the curved surface display area is reduced, and the display effect is improved.
Description
Technical Field
The application relates to the technical field of display, in particular to a display panel.
Background
In recent years, more and more flagship machines or high-end machines in the market adopt the design of a curved surface screen, on one hand, the curved surface screen is full of science and technology, on the other hand, the mobile phone tends to have no frame design, and the mobile phone is favored by a plurality of consumers. However, in practice, excessively curved glass designs have some impact on screen reading, although some improvement in curvature can be achieved by improving the curvature. However, such curved screen or "waterfall" cell phones have a common problem: after the screen is lightened, obvious black shadows can appear in the curved surface areas on two sides, namely, the brightness of the curved surface areas is lower than that of the plane areas. This is because when the user is looking at the mobile phone screen, the curved glass is not illuminated at the angle of 0 degrees but at a larger angle, and the large angle causes the luminance attenuation due to the microcavity effect, so that the curved region is darker in luminance, resulting in poor picture display effect.
Accordingly, there is an urgent need for improvement in view of the drawbacks existing in the prior art.
Disclosure of Invention
The application aims to provide a display panel, which solves the problem that the brightness of a curved surface area in the existing display panel is attenuated, so that the brightness of a plane area is different from the brightness of the curved surface area.
The embodiment of the application provides a display panel which is provided with a plane display area and a curved surface display area positioned at the periphery of the plane display area, and the display panel comprises: the display substrate comprises a plurality of pixel units which are arranged in the plane display area and the curved surface display area in an array manner, and each pixel unit comprises at least three sub-pixel units with different colors which are arranged at intervals; the packaging layer is arranged in the light emitting direction of the display substrate and comprises a first inorganic packaging layer, a first organic packaging layer and a second inorganic packaging layer which are sequentially stacked along the light emitting direction far away from the display substrate; wherein the thickness of the first organic encapsulation layer in the curved display area is smaller than the thickness of the first organic encapsulation layer in the planar display area.
Optionally, in some embodiments of the present application, a thickness of the encapsulation layer located in the curved display area is the same as a thickness of the encapsulation layer located in the flat display area; wherein the thickness of the second inorganic encapsulation layer in the curved display area is greater than the thickness of the second inorganic encapsulation layer in the planar display area.
Optionally, in some embodiments of the present application, a thickness of the first organic encapsulation layer located in the curved display area is 1/3 to 5/6 of a thickness of the first organic encapsulation layer located in the flat display area.
Optionally, in some embodiments of the present application, a thickness of the first organic encapsulation layer located within the flat display region ranges between 8 μm and 15 μm; wherein the thickness of the first organic encapsulation layer in the curved display area is between 2 μm and 8 μm smaller than the thickness of the first organic encapsulation layer in the planar display area.
Optionally, in some embodiments of the present application, the display substrate further includes: a substrate base; the pixel definition layer is arranged on the substrate and provided with a plurality of pixel openings; the first inorganic packaging layer covers the pixel defining layer and a plurality of sub-pixel units positioned in the pixel opening.
Optionally, in some embodiments of the present application, the flat display area includes a display transition area, and the display transition area is adjacent to the curved display area and is staggered from the pixel opening in a thickness direction of the display panel; in the display transition region, the thickness of the first organic encapsulation layer gradually decreases in a direction approaching the curved display region.
Optionally, in some embodiments of the present application, the display panel further includes: the shading layer is arranged on one side of the second inorganic packaging layer far away from the first organic packaging layer, and openings are formed in positions corresponding to the sub-pixel units; each color resistance unit comprises at least three sub-color resistance units with different colors which are arranged at intervals, and the sub-color resistance units are correspondingly arranged in the opening; a flat layer covering the light shielding layer and the plurality of color resistance units; and each sub-color resistance unit has the same color as the sub-pixel units correspondingly arranged.
Optionally, in some embodiments of the present application, a sum of thicknesses of the encapsulation layer and the flat layer located in the curved display area is the same as a sum of thicknesses of the encapsulation layer and the flat layer located in the flat display area; wherein the thickness of the flat layer in the curved display area is greater than the thickness of the flat layer in the flat display area.
Optionally, in some embodiments of the present application, an orthographic projection of each sub-color resistance unit on the display substrate covers the sub-pixel units disposed corresponding thereto.
Alternatively, in some embodiments of the present application, the materials of the pixel defining layer and the light shielding layer include a black organic material.
In summary, an embodiment of the present application provides a display panel having a flat display area and a curved display area, the display panel including: the display substrate comprises a plurality of pixel units which are arranged in the plane display area and the curved surface display area in an array manner, and each pixel unit comprises at least three sub-pixel units with different colors which are arranged at intervals; the packaging layer is arranged in the light emitting direction of the display substrate and comprises a first inorganic packaging layer, a first organic packaging layer and a second inorganic packaging layer which are sequentially stacked along the light emitting direction far away from the display substrate; wherein the thickness of the first organic encapsulation layer in the curved display area is smaller than the thickness of the first organic encapsulation layer in the planar display area. The brightness attenuation of the curved surface display area can be effectively slowed down, so that the brightness difference between the plane display area and the curved surface display area is reduced, and the display effect is improved. The plane display area comprises a display transition area, wherein the display transition area is adjacent to the curved surface display area and is staggered with the pixel opening in the thickness direction of the display panel; the influence of brightness change on the display of the pixel units can be reduced to the greatest extent, and the display effect is further improved.
In addition, since the thickness of the first organic encapsulation layer in the curved display area is smaller than that of the first organic encapsulation layer in the flat display area, in order to ensure that the sum of the thicknesses of the encapsulation layer and the flat layer in the curved display area is the same as the sum of the thicknesses of the encapsulation layer and the flat layer in the flat display area, the thickness of the second inorganic encapsulation layer or the flat layer in the curved display area is increased, so that the thickness uniformity of the encapsulation layer can be realized, the brightness attenuation problem of the curved display area is alleviated, the flatness of the display panel is ensured, and the display effect is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic plan view of a display panel according to an embodiment of the application;
FIG. 2 is a schematic plan view of a display panel according to an embodiment of the application;
FIG. 3 is a schematic cross-sectional view of a display panel according to an embodiment of the application;
fig. 4 is a schematic cross-sectional view of a display panel according to an embodiment of the application.
The main reference numerals illustrate:
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to fall within the scope of the application. Furthermore, it should be understood that the detailed description is presented herein for purposes of illustration and description only, and is not intended to limit the application. In the present application, unless otherwise indicated, terms such as "upper", "lower", "left" and "right" may be directions of actual use or working states of the apparatus, may refer to directions of the drawings in the drawings, or may refer to two directions opposite to each other; while "inner" and "outer" are for the outline of the device.
Specifically, referring to fig. 1 to 3, an embodiment of the present application provides a display panel 10, which has a flat display area 101 and a curved display area 102 located at a peripheral side of the flat display area 101. As shown in fig. 1, the display panel 10 may be a hyperboloid display panel; as shown in fig. 2, the display panel 10 may be a four-curved display panel. As shown in fig. 3, the display panel 10 includes: a display substrate 100, including a plurality of pixel units 110 arranged in an array in the flat display area 101 and the curved display area 102, where each pixel unit 110 includes at least three sub-pixel units 111 of different colors arranged at intervals; the encapsulation layer 120 is disposed in the light emitting direction of the display substrate 110, and includes a first inorganic encapsulation layer 121, a first organic encapsulation layer 122, and a second inorganic encapsulation layer 123 that are sequentially stacked along the light emitting direction away from the display substrate 100; wherein the thickness of the first organic encapsulation layer 122 located in the curved display area 102 is smaller than the thickness of the first organic encapsulation layer 122 located in the flat display area 101. In the display process of the display panel 10, the influence of the thickness of the organic film layer on the brightness thereof is relatively large, and since the thickness of the first organic encapsulation layer 122 is relatively large compared with other film layers in the display panel 10, reducing the thickness of the first organic encapsulation layer 122 can improve the display brightness, in this embodiment, the thickness of the first organic encapsulation layer 122 located in the curved display area 102 is reduced, the brightness of the curved display area 102 can be improved, the difference between the curved display area 102 and the planar display area 101 in the light-emitting angle is compensated by the increase of the brightness, the brightness attenuation problem of the curved display area 102 is alleviated, and the effect of balancing the display brightness is achieved.
In the present application, the materials of the first inorganic encapsulation layer 121 and the second inorganic encapsulation layer 123 include, but are not limited to, silicon nitride, silicon oxide, or silicon oxynitride; the material of the first organic encapsulation layer 122 includes, but is not limited to, polyacrylate.
In an embodiment, the thickness of the encapsulation layer 120 in the curved display area 102 is the same as the thickness of the encapsulation layer 120 in the flat display area 101; wherein the thickness of the second inorganic encapsulation layer 123 located in the curved display area 102 is greater than the thickness of the second inorganic encapsulation layer 123 located in the flat display area 101. Since the thickness of the first organic encapsulation layer 122 in the curved display area 102 is smaller than the thickness of the first organic encapsulation layer 122 in the flat display area 101, in order to ensure that the thickness of the encapsulation layer 120 is the same, the thickness of the second inorganic encapsulation layer 123 in the curved display area 102 is increased, so that the thickness uniformity of the encapsulation layer 120 can be realized, the problem of brightness attenuation in the curved display area 102 is alleviated, the flatness of the display panel 10 is ensured, and the display effect is improved.
In the present application, the thickness of the first organic encapsulation layer 122 in the curved display area 102 is 1/3 to 5/6 of the thickness of the first organic encapsulation layer 122 in the flat display area 101. That is, there is a certain ratio between the thickness of the first organic encapsulation layer 122 in the curved display area 102 and the thickness of the first organic encapsulation layer 122 in the flat display area 101, and within this ratio range, the brightness enhancement of the curved display area 102 can compensate the difference between the curved display area 102 and the flat display area 101 in the light-emitting angle, so as to alleviate the brightness attenuation problem of the curved display area 102. In one embodiment, the thickness of the first organic encapsulation layer 122 in the flat display area 101 ranges from 8 μm to 15 μm; wherein the thickness of the first organic encapsulation layer 122 located in the curved display area 102 is between 2 μm and 8 μm smaller than the thickness of the first organic encapsulation layer 122 located in the flat display area 101. Preferably, the thickness of the first organic encapsulation layer 122 located within the flat display area 101 is 8 μm, 9 μm, 10 μm, 11 μm, 12 μm, 13 μm or 14 μm; wherein the thickness of the first organic encapsulation layer 122 located in the curved display region 102 is 2 μm, 3 μm, 4 μm, 5 μm, 6 μm, 7 μm or 8 μm smaller than the thickness of the first organic encapsulation layer 122 located in the flat display region 101. For example: when the thickness of the first organic encapsulation layer 122 located in the flat display region 101 is 12 μm, the thickness of the first organic encapsulation layer 122 located in the curved display region 102 is 4 μm, 5 μm, 6 μm, 7 μm, 8 μm, 9 μm or 10 μm.
In the present application, the display substrate 100 further includes a substrate 130 and a pixel defining layer 140; the pixel defining layer 140 is disposed on the substrate 130 and has a plurality of pixel openings 141; the sub-pixel units 111 are respectively disposed in the pixel openings 141, and the first inorganic encapsulation layer 121 covers the pixel defining layer 140 and the sub-pixel units 111 disposed in the pixel openings 141. The flat display area 101 includes a display transition area 103, where the display transition area 103 is adjacent to the curved display area 102 and is staggered from the pixel opening 141 in the thickness direction of the display panel 10; in the display transition region 103, the thickness of the first organic encapsulation layer 122 gradually decreases in a direction approaching the curved display region 102. That is, the thickness of the first organic encapsulation layer 122 is not suddenly reduced, but is uniformly reduced before the flat display area 101 is bent toward the curved display area 102. On the one hand, the difference in brightness between the flat display area 101 and the curved display area 102 is reduced; on the other hand, the difference in brightness variation between the flat display area 101 and the curved display area 102 is reduced, that is, the boundary of the difference in brightness is weakened, thereby achieving the effect of display brightness balance. In addition, the display transition area 103 is staggered from the pixel opening 141 in the thickness direction of the display panel 10, so that the influence of brightness variation on the display of the pixel unit 110 can be reduced to the maximum extent, and the display effect can be improved visually. It is understood that the sub-pixel unit 111 is formed in the pixel opening 141 by vapor deposition or ink jet printing, and includes a red sub-pixel unit, a green sub-pixel unit, and a blue sub-pixel unit.
As can be appreciated, the substrate 130 includes: a substrate, a shading layer, a buffer layer, an active layer, a gate insulating layer, a gate electrode, an interlayer insulating layer, a source/drain electrode, a passivation layer and the like. For example: specifically, the shading layer is arranged on the substrate, the buffer layer covers the shading layer and the substrate, the active layer is arranged on the buffer layer, the gate insulating layer is arranged on the active layer, the gate is arranged on the gate insulating layer, the interlayer insulating layer covers the gate and the active layer, the source/drain electrode is connected with the active layer through a via hole on the interlayer insulating layer, and the passivation layer covers the source/drain electrode and the interlayer insulating layer. The substrate may be a flexible substrate, a glass substrate or a flexible substrate, and the preparation materials of the flexible substrate include but are not limited to polyimide and polyethylene terephthalate. The shading layer can effectively reduce the influence of ambient light on the performance of each device in the thin film transistor. The buffer layer is used for heat preservation and is any one of a silicon nitride layer, a silicon oxide layer or a laminated layer of silicon nitride and silicon oxide. The active layer is used for conducting carriers, and the preparation material of the active layer can be polycrystalline silicon, monocrystalline silicon or oxide semiconductor. The gate insulating layer is any one of a silicon nitride layer, a silicon oxide layer, or an overlapped layer of silicon nitride and silicon oxide. The preparation material of the grid electrode comprises at least one of molybdenum, aluminum, titanium, chromium and copper. The interlayer insulating layer is used for insulating the source/drain electrode and the grid electrode from other conductive layers.
Specifically, referring to fig. 4, in an embodiment, the display panel 10 further includes: a light shielding layer 150, a plurality of color resist units 160, and a planarization layer 170. The light shielding layer 150 is disposed on a side of the second inorganic encapsulation layer 123 away from the first organic encapsulation layer 122, and openings 151 are disposed at positions corresponding to the sub-pixel units 111; each color resistance unit 160 comprises at least three sub-color resistance units 161 with different colors which are arranged at intervals, and the sub-color resistance units 161 are correspondingly arranged in the opening 151; the planarization layer 170 covers the light shielding layer 150 and the plurality of color resist units 160; wherein each sub-color resistance unit 161 has the same color as the corresponding sub-pixel unit 111. The light shielding layer 150 and the plurality of color blocking units 160 can replace the conventional polarizer, and are used for reducing the reflection light of the ambient light on the surface of the display panel 10 and the light generated by the pixel units 110. The color resist unit 160 includes: a red sub-color resistance unit, a green sub-color resistance unit and a blue sub-color resistance unit; the red sub-color resistance unit is arranged corresponding to the red sub-pixel unit, the green sub-color resistance unit is arranged corresponding to the green sub-pixel unit, and the blue sub-color resistance unit is arranged corresponding to the blue sub-pixel unit. That is, the red sub-color resistance unit is located above the red sub-pixel unit, the green sub-color resistance unit is located above the green sub-pixel unit, the blue sub-color resistance unit is located above the blue sub-pixel unit, and the light shielding layer 150 is located above the pixel defining layer 140, so that the contrast ratio of the display panel 10 can be improved.
In one embodiment, the sum of the thicknesses of the encapsulation layer 120 and the flat layer 170 in the curved display area 102 is the same as the sum of the thicknesses of the encapsulation layer 120 and the flat layer 170 in the flat display area 101; wherein the thickness of the flat layer 170 in the curved display area 102 is greater than the thickness of the flat layer 170 in the flat display area 101. Since the thickness of the first organic encapsulation layer 122 in the curved display area 102 is smaller than the thickness of the first organic encapsulation layer 122 in the flat display area 101, in order to ensure that the sum of the thicknesses of the encapsulation layer 120 and the flat layer 170 in the curved display area 102 is the same as the sum of the thicknesses of the encapsulation layer 120 and the flat layer 170 in the flat display area 101, the thickness of the flat layer 170 in the curved display area 102 is increased, so that the thickness uniformity of the encapsulation layer 120 can be realized, the brightness attenuation problem of the curved display area 102 is alleviated, the flatness of the display panel 10 is ensured, and the display effect is improved.
In an embodiment, the front projection of each sub-color resist unit 161 on the display substrate 100 covers the sub-pixel units 111 disposed corresponding thereto. That is, the area of the red sub-color resistance unit is larger than the area of the red sub-pixel unit, the area of the green sub-color resistance unit is larger than the area of the green sub-pixel unit, and the area of the blue sub-color resistance unit is larger than the area of the blue sub-pixel unit. This arrangement can increase the viewing angle of the display panel 10, reduce the luminance degradation of the red, green, and blue sub-pixel units, and increase the transmittance thereof.
In the present application, the materials of the pixel defining layer 140 and the light shielding layer 150 include black organic materials such as cellulose ethyl ester acid, poly (p-phenylene ether), polyimide, polycarbonate, epoxy, phenoxy resin, polyethersulfone, polyacrylate, etc., and black particles such as carbon black, oxides of copper, cobalt, manganese, chromium, titanium, etc., and composite oxide particles thereof. By providing the pixel defining layer 140 in the display panel 10 to absorb incident light incident into the display panel 10, the light extraction efficiency of the display panel 10 is not reduced while the display panel 10 has good contrast when displaying under strong ambient light.
Specifically, the display panel 10 of the present application can be applied to any product or component having a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, and the like. Those skilled in the art should understand that other essential components of the display panel 10 are not described herein, and should not be construed as limiting the application.
In summary, an embodiment of the present application provides a display panel 10 having a flat display area 101 and a curved display area 102, where the display panel 10 includes: a display substrate 100, including a plurality of pixel units 110 arranged in an array in the flat display area 101 and the curved display area 102, where each pixel unit 110 includes at least three sub-pixel units 111 of different colors arranged at intervals; the encapsulation layer 120 is disposed in the light emitting direction of the display substrate 110, and includes a first inorganic encapsulation layer 121, a first organic encapsulation layer 122, and a second inorganic encapsulation layer 123 that are sequentially stacked along the light emitting direction away from the display substrate 100; wherein the thickness of the first organic encapsulation layer 122 located in the curved display area 102 is smaller than the thickness of the first organic encapsulation layer 122 located in the flat display area 101. The brightness attenuation of the curved display area 102 can be effectively slowed down, so that the brightness difference between the flat display area 101 and the curved display area 102 is reduced, and the display effect is improved. The flat display area 101 includes a display transition area 103, where the display transition area 103 is adjacent to the curved display area 102 and is staggered from the pixel opening 141 in the thickness direction of the display panel 10; the influence of the brightness variation on the display of the pixel unit 110 can be reduced to the maximum extent, and the display effect is further improved.
In addition, since the thickness of the first organic encapsulation layer 122 located in the curved display area 102 is smaller than the thickness of the first organic encapsulation layer 122 located in the flat display area 101, in order to ensure that the sum of the thicknesses of the encapsulation layer 120 and the flat layer 170 located in the curved display area 102 is the same as the sum of the thicknesses of the encapsulation layer 120 and the flat layer 170 located in the flat display area 101, the thickness of the second inorganic encapsulation layer 123 or the flat layer 170 located in the curved display area 102 is increased, so that the thickness uniformity of the encapsulation layer 120 can be realized, the brightness attenuation problem of the curved display area 102 can be alleviated, the flatness of the display panel 10 can be ensured, and the display effect can be improved.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.
The foregoing has outlined the detailed description of the embodiments of the present application, and the detailed description of the principles and embodiments of the present application is provided herein by way of example only to facilitate the understanding of the method and core concepts of the present application; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present application, the present description should not be construed as limiting the present application.
Claims (9)
1. A display panel having a flat display area and a curved display area located on a peripheral side of the flat display area, the display panel comprising:
the display substrate comprises a plurality of pixel units which are arranged in the plane display area and the curved surface display area in an array manner, and each pixel unit comprises at least three sub-pixel units with different colors which are arranged at intervals;
the packaging layer is arranged in the light emitting direction of the display substrate and comprises a first inorganic packaging layer, a first organic packaging layer and a second inorganic packaging layer which are sequentially stacked along the light emitting direction far away from the display substrate; wherein the method comprises the steps of
The thickness of the first organic encapsulation layer in the curved display area is smaller than that of the first organic encapsulation layer in the planar display area;
wherein the thickness of the encapsulation layer in the curved display area is the same as the thickness of the encapsulation layer in the planar display area; the thickness of the second inorganic encapsulation layer in the curved display area is greater than that of the second inorganic encapsulation layer in the planar display area.
2. The display panel of claim 1, wherein a thickness of the first organic encapsulation layer located in the curved display area is 1/3 to 5/6 of a thickness of the first organic encapsulation layer located in the flat display area.
3. The display panel of claim 1, wherein a thickness of the first organic encapsulation layer within the flat display region ranges from 8 μm to 15 μm; wherein the method comprises the steps of
The thickness of the first organic encapsulation layer in the curved display area is 2-8 μm smaller than that of the first organic encapsulation layer in the planar display area.
4. The display panel of claim 1, wherein the display substrate further comprises:
a substrate base;
the pixel definition layer is arranged on the substrate and provided with a plurality of pixel openings; wherein the method comprises the steps of
The sub-pixel units are respectively arranged in the pixel openings, and the first inorganic packaging layer covers the pixel definition layer and a plurality of sub-pixel units positioned in the pixel openings.
5. The display panel of claim 4, wherein the flat display region includes a display transition region adjacent to the curved display region and offset from the pixel openings in a thickness direction of the display panel;
in the display transition region, the thickness of the first organic encapsulation layer gradually decreases in a direction approaching the curved display region.
6. The display panel of claim 4, wherein the display panel further comprises:
the shading layer is arranged on one side of the second inorganic packaging layer far away from the first organic packaging layer, and openings are formed in positions corresponding to the sub-pixel units;
each color resistance unit comprises at least three sub-color resistance units with different colors which are arranged at intervals, and the sub-color resistance units are correspondingly arranged in the opening;
a flat layer covering the light shielding layer and the plurality of color resistance units; wherein the method comprises the steps of
And each sub-color resistance unit has the same color as the sub-pixel units correspondingly arranged.
7. The display panel of claim 6, wherein a sum of thicknesses of the encapsulation layer and the flat layer in the curved display area is the same as a sum of thicknesses of the encapsulation layer and the flat layer in the flat display area; wherein the method comprises the steps of
The thickness of the flat layer in the curved display area is greater than that of the flat layer in the planar display area.
8. The display panel of claim 6, wherein the front projection of each sub-color resist unit on the display substrate covers the sub-pixel units disposed corresponding thereto.
9. The display panel of claim 6, wherein the materials of the pixel defining layer and the light shielding layer comprise black organic materials.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210448830.5A CN114843326B (en) | 2022-04-26 | 2022-04-26 | display panel |
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| CN202210448830.5A CN114843326B (en) | 2022-04-26 | 2022-04-26 | display panel |
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| CN114843326B true CN114843326B (en) | 2023-09-29 |
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