CN111668281A - OLED display panel and OLED display device - Google Patents
OLED display panel and OLED display device Download PDFInfo
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- CN111668281A CN111668281A CN202010626258.8A CN202010626258A CN111668281A CN 111668281 A CN111668281 A CN 111668281A CN 202010626258 A CN202010626258 A CN 202010626258A CN 111668281 A CN111668281 A CN 111668281A
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- 239000000758 substrate Substances 0.000 claims abstract description 63
- 239000010410 layer Substances 0.000 claims description 351
- 230000003287 optical effect Effects 0.000 claims description 61
- 239000000463 material Substances 0.000 claims description 43
- 238000005538 encapsulation Methods 0.000 claims description 35
- 239000012044 organic layer Substances 0.000 claims description 32
- 238000005452 bending Methods 0.000 claims description 28
- 230000001681 protective effect Effects 0.000 claims description 13
- 238000004806 packaging method and process Methods 0.000 claims description 8
- 239000011368 organic material Substances 0.000 claims description 6
- 229910010272 inorganic material Inorganic materials 0.000 claims description 5
- 239000011147 inorganic material Substances 0.000 claims description 5
- 229920001621 AMOLED Polymers 0.000 abstract description 13
- 239000012141 concentrate Substances 0.000 abstract description 5
- 238000006116 polymerization reaction Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 6
- 238000002834 transmittance Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000007641 inkjet printing Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
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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
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/12—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body
- H01L27/1214—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
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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
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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
- H10K50/85—Arrangements for extracting light from the devices
- H10K50/858—Arrangements for extracting light from the devices comprising refractive means, e.g. lenses
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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
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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 embodiment of the application provides an OLED display panel and OLED display device, this OLED display panel is through at the display area edge, the direction of keeping away from the substrate at optics improves the layer sets up the colour cast and improves the layer, and make the refracting index of colour cast improvement layer be greater than the refracting index of optics and improve the layer, and make colour cast improve the layer at OLED display panel and protection apron equipment back, the direction of orientation substrate is crooked, thereby make the colour cast improve the layer and can the polymerization light, make light can concentrate more, thereby reduce colour cast, it buckles to the edge region to have alleviated current AMOLED display device and have existed, lead to the technical problem of colour cast.
Description
Technical Field
The application relates to the technical field of display, in particular to an OLED display panel and an OLED display device.
Background
An Active-matrix Organic Light Emitting Diode (AMOLED) display device is widely used due to its excellent performance such as high contrast, wide viewing angle, and being bendable, and fig. 1 is an AMOLED display panel in the prior art, where in order to implement a full-screen display, a non-display area at the edge of a display area is made smaller by bending the non-display area, so as to implement the full-screen display, but when bending the non-display area of the display panel, the display area may also be bent to some extent, so as to cause color shift when viewing the display panel, as shown in fig. 2, as the bending angle of the bending area increases, which is equivalent to the increase of the viewing angle, the color shift becomes more serious.
Therefore, the conventional AMOLED display device has the technical problem of color cast caused by bending the edge area.
Disclosure of Invention
The embodiment of the application provides an OLED display panel and an OLED display device, which are used for relieving the technical problem that the color cast is caused by bending an edge area of an existing AMOLED display device.
The embodiment of the present application provides an OLED display panel, which includes:
a substrate;
a driving circuit layer disposed on the substrate;
the light-emitting material layer is arranged on the driving circuit layer;
an optical improvement layer disposed on the luminescent material layer;
the packaging layer is arranged on the optical improvement layer;
the OLED display panel comprises a substrate, an optical improvement layer, a color shift improvement layer, a protection cover plate and an OLED display panel, wherein the optical improvement layer is arranged in the edge area of the display area and far away from the substrate, the color shift improvement layer is arranged in the direction of the substrate, the refractive index of the color shift improvement layer is larger than that of the optical improvement layer, and after the OLED display panel is assembled with the protection cover plate, the color shift improvement layer is located in a bending area and bends towards the direction of the substrate.
In some embodiments, the color shift improving layer is disposed between the encapsulation layer and the optical improvement layer.
In some embodiments, the encapsulation layer includes a first inorganic layer, an organic layer disposed on the first inorganic layer, and a second inorganic layer disposed on the organic layer, the color shift improving layer being disposed between the first inorganic layer and the organic layer.
In some embodiments, the thickness of the color shift improving layer ranges from equal to one third to one half of the thickness of the organic layer.
In some embodiments, the encapsulation layer includes a first inorganic layer, an organic layer disposed on the first inorganic layer, and a second inorganic layer disposed on the organic layer, the color shift improving layer being disposed between the organic layer and the second inorganic layer.
In some embodiments, the color shift improving layer is disposed in a direction of the encapsulation layer away from the optical improving layer.
In some embodiments, the material of the color shift improving layer includes one of an organic material and an inorganic material.
In some embodiments, the color shift improving layer is disposed around the OLED display panel, and a projected area of the color shift improving layer on the substrate is smaller than a projected area of the light emitting material layer on the substrate.
In some embodiments, the OLED display panel includes pixel units, and a width of the color shift improving layer on one side of the OLED display panel is greater than or equal to a sum of widths of two adjacent pixel units.
Meanwhile, an embodiment of the present application provides an OLED display device, which includes an OLED display panel and a cover plate, where the cover plate is bent at an edge area of a display area, and the OLED display panel includes:
a substrate;
a driving circuit layer disposed on the substrate;
the light-emitting material layer is arranged on the driving circuit layer;
an optical improvement layer disposed on the luminescent material layer;
the packaging layer is arranged on the optical improvement layer;
in the edge region of the display area, a color shift improving layer is arranged in the direction of the optical improving layer far away from the substrate, the refractive index of the color shift improving layer is larger than that of the optical improving layer, and the color shift improving layer is located in the bending area and is bent towards the substrate.
Has the advantages that: the embodiment of the application provides an OLED display panel and an OLED display device, the OLED display panel comprises a substrate, a driving circuit layer, a light-emitting material layer, an optical improvement layer and an encapsulation layer, the driving circuit layer is arranged on the substrate, the light-emitting material layer is arranged on the driving circuit layer, the optical improvement layer is arranged on the light-emitting material layer, the encapsulation layer is arranged on the optical improvement layer, a color cast improvement layer is arranged in the edge area of a display area in the direction that the optical improvement layer is far away from the substrate, the refractive index of the color cast improvement layer is larger than that of the optical improvement layer, and after the OLED display panel is assembled with a protective cover plate, the color cast improvement layer is positioned in a bending area and is bent towards the direction of the substrate; through at the display area edge, the direction of keeping away from the substrate at optics improves the layer sets up the colour cast and improves the layer, and make the refracting index of colour cast improve the layer be greater than the refracting index of optics and improve the layer, and make colour cast improve the layer and assemble the back at OLED display panel and protection apron, the direction of orientation substrate is crooked, thereby make colour cast improve the layer can the polymerization light, make light can concentrate more, thereby reduce colour cast, it buckles to the edge region to have alleviated current AMOLED display device, lead to the technical problem of colour cast.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic diagram of a conventional OLED display panel.
Fig. 2 is a schematic diagram of color shift of a conventional OLED display panel.
Fig. 3 is a first schematic view of an OLED display panel according to an embodiment of the present disclosure.
Fig. 4 is a second schematic view of an OLED display panel according to an embodiment of the present application.
Fig. 5 is a third schematic view of an OLED display panel according to an embodiment of the present application.
Fig. 6 is a fourth schematic view of an OLED display panel according to an embodiment of the present application.
Fig. 7 is a fifth schematic view of an OLED display panel according to an embodiment of the present application.
Fig. 8 is a schematic diagram illustrating a principle of improving color shift of an OLED display panel according to an embodiment of the present application.
Fig. 9 is a schematic view of an OLED display device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
The AMOLED display device is used for solving the technical problem that the edge area is bent to cause color cast in the existing AMOLED display device.
As shown in fig. 1, the conventional OLED display panel includes a substrate 11, a thin film transistor 12, a light emitting layer 13, an optical improvement layer 14, and an encapsulation layer 15, where the encapsulation layer 15 includes a first encapsulation layer 151, a second encapsulation layer 152, and a third encapsulation layer 153, in order to implement a narrow frame and a full screen of a display device, a non-display region of the OLED display panel is bent, so that the non-display region at an edge of the display region of the OLED display panel is smaller or not, thereby implementing the full screen, but the bending of the non-display region also causes the bending of the display region, so that when the OLED display panel is viewed, it is equivalent to viewing the OLED display panel at a large viewing angle, as shown in fig. 2, in order to view the OLED display panel at the same angle, the display effect of the OLED display panel at different bending angles is achieved, in fig. 2, (a) when the OLED display panel is not bent, and when the OLED display panel is viewed, the display region of the OLED display panel 1 is a normal display region 101, fig. 2 (b) shows that when the non-display region of the OLED display panel is bent by 30 degrees, the display region of the OLED display panel 1 includes a normal display region 101 and a color shift region 102, fig. 2 (c) shows that when the non-display region of the OLED display panel is bent by 60 degrees, the display region of the OLED display panel 1 includes a normal display region 101 and a color shift region 102, and fig. 2 (d) shows that when the non-display region of the OLED display panel is bent by 80 degrees, the display region of the OLED display panel 1 includes a normal display region 101 and a color shift region 102, as can be seen from fig. 2, when the OLED display panel is bent, the OLED display panel may have color shift, and as the bending angle increases, the color shift may be more serious, that is, the existing AMOLED display device has a technical problem of color shift caused by bending an edge region.
As shown in fig. 3, an embodiment of the present application provides an OLED display panel, including:
a substrate 21;
a driver circuit layer 22 disposed on the substrate 21;
a light emitting material layer 23 disposed on the driving circuit layer 22;
an optical improvement layer 24 disposed on the luminescent material layer 23;
an encapsulation layer 25 disposed on the optical improvement layer 24;
in the edge region 271 of the display area 27, the color shift improving layer 26 is disposed in a direction of the optical improving layer 24 away from the substrate 21, a refractive index of the color shift improving layer 26 is greater than a refractive index of the optical improving layer 24, and after the OLED display panel is assembled with the protective cover plate, the color shift improving layer 26 is located in a bending region and is bent toward the substrate 21.
The embodiment of the application provides an OLED display panel, which comprises a substrate, a driving circuit layer, a light-emitting material layer, an optical improvement layer and an encapsulation layer, wherein the driving circuit layer is arranged on the substrate, the light-emitting material layer is arranged on the driving circuit layer, the optical improvement layer is arranged on the light-emitting material layer, the encapsulation layer is arranged on the optical improvement layer, a color cast improvement layer is arranged on the edge area of a display area in the direction of the optical improvement layer far away from the substrate, the refractive index of the color cast improvement layer is larger than that of the optical improvement layer, and after the OLED display panel is assembled with a protective cover plate, the color cast improvement layer is positioned in a bending area and is bent towards the substrate; through at the display area edge, the direction of keeping away from the substrate at optics improves the layer sets up the colour cast and improves the layer, and make the refracting index of colour cast improve the layer be greater than the refracting index of optics and improve the layer, and make colour cast improve the layer and assemble the back at OLED display panel and protection apron, the direction of orientation substrate is crooked, thereby make colour cast improve the layer can the polymerization light, make light can concentrate more, thereby reduce colour cast, it buckles to the edge region to have alleviated current AMOLED display device, lead to the technical problem of colour cast.
In an embodiment, as shown in fig. 3, the color shift improving layer 26 is disposed between the encapsulating layer 25 and the optical improving layer 24, and when the color shift improving layer is disposed, the color shift improving layer is disposed between the optical improving layer and the encapsulating layer, so that light emitted from the light-emitting material layer can converge after passing through the color shift improving layer after passing through the optical improving layer, and thus the light can converge toward the middle region of the display area without diverging to the outside of the display area, thereby alleviating divergence of the light due to bending of the display area, and thus converging the light.
In one embodiment, as shown in fig. 4, the encapsulation layer 25 includes a first inorganic layer 251, an organic layer 252 and a second inorganic layer 253, the organic layer 252 is disposed on the first inorganic layer 251, the second inorganic layer 253 is disposed on the organic layer 252, and the color shift improving layer 26 is disposed between the first inorganic layer 251 and the organic layer 252, when the color shift improving layer is disposed, the color shift improving layer may be disposed in the encapsulation layer, so that light can still pass through the color shift improving layer after passing through the optical improving layer and the first inorganic layer, and the color shift improving layer polymerizes light in an edge region of the display area, thereby preventing light divergence in the edge region of the display area, and thus making the display effect of the edge region of the display area consistent with that of other regions of the display area, and preventing color shift of the OLED display panel.
In one embodiment, the thickness of the color shift improving layer is in a range from one third to one half of the thickness of the organic layer, when the color shift improving layer is disposed in the encapsulation layer, the width of the organic layer is larger than the width of the color shift improving layer to avoid the color shift improving layer from exerting a bad influence on the encapsulation performance of the encapsulation layer, and the outer wall of the color shift improving layer is not in contact with the inner wall of the organic layer to avoid the color shift improving layer from influencing the encapsulation performance of the encapsulation layer, and at the same time, the refraction of the color shift improving layer and the integrity of the organic layer are comprehensively considered in the thickness setting, so that the thickness of the color shift improving layer is in a range from one third to one half of the thickness of the organic layer, and thus the color shift improving layer can improve the color shift of the OLED display panel without damaging the bending property of the organic layer, thereby ensuring the encapsulation performance of the encapsulation layer, considering that the thickness of the organic layer corresponding to the color shift improving layer decreases, the flexibility of the encapsulation layer may be affected, and the material of the color shift improving layer may also be a flexible material, so as to avoid the flexibility of the encapsulation layer from being affected.
In one embodiment, as shown in fig. 5, the encapsulation layer 25 includes a first inorganic layer 251, an organic layer 252 and a second inorganic layer 253, the organic layer 252 is disposed on the first inorganic layer 251, the second inorganic layer 253 is disposed on the organic layer 252, and the color shift improving layer 26 is disposed between the organic layer 252 and the second inorganic layer 253, when the color shift improving layer is disposed in the encapsulation layer, the color shift improving layer can be disposed between the organic layer and the second inorganic layer, so that after the light passes through the optical improving layer, the first inorganic layer and the organic layer, the light at the edge region of the display region is converged by the color shift improving layer to the other region of the display region when the light passes through the color shift improving layer, thereby the display effect at the edge region of the display region is consistent with the display effect at the other region of the display region, and the display effect of the display region is consistent, thereby improving the color cast problem of the OLED display panel.
In one embodiment, as shown in fig. 6, the color shift improving layer 26 is disposed in a direction of the encapsulating layer 25 away from the optical improving layer 24, when the color shift improving layer is arranged, the color shift improving layer can be arranged outside the packaging layer, after the light passes through the optical improving layer and the packaging layer, the light can be polymerized by the color shift improving layer when the light passes through the color shift improving layer, thereby making the display effect of the edge area of the display area consistent with that of the other areas of the display area, thereby improving color shift, and at the same time, when the width of the color shift improving layer is set, the color shift improving layer can extend to the non-display area in consideration of the fact that the angle of light rays passing through the packaging layer is increased relative to the light rays passing through the light ray improving layer, so that the light rays emitted out of the display area return to the edge area of the display area after passing through the color shift improving layer, thereby improving color shift.
In one embodiment, the material of the color shift improving layer includes one of an organic material and an inorganic material, and when the material of the color shift improving layer is selected, in order to avoid the influence of the color shift improving layer on the light transmittance of the OLED display panel, a material with higher light transmittance is selected as the material of the color shift improving layer, and meanwhile, in consideration of different arrangement positions of the color shift improving layer, the material of the color shift improving layer may be one of an organic material and an inorganic material, for example, when the color shift improving layer is arranged between the first inorganic layer and the organic layer, the material of the color shift improving layer may be an organic material, and when the color shift improving layer is arranged on the optical improving layer, the material of the color shift improving layer may be an organic material or an inorganic material; specifically, the material of the color shift improving layer includes colorless polyimide, silicon nitride, and titanium dioxide.
In an embodiment, as shown in fig. 7, the color shift improving layer 26 is disposed around the OLED display panel 2, and a projection area of the color shift improving layer 26 on the substrate is smaller than a projection area of the light emitting material layer on the substrate, and the color shift improving layer is disposed around the OLED display panel, so that when there is a bend around the OLED display panel, light can penetrate through the color shift improving layer, thereby improving color shift, and considering that the color shift phenomenon does not occur in the middle area of the display area, the color shift improving layer may not be disposed in the middle area of the display area, thereby avoiding affecting the light transmittance of the OLED display panel as much as possible, and simultaneously avoiding affecting the thickness of the display panel.
In one embodiment, the OLED display panel includes pixel units, and the width of the color shift improving layer on one side of the OLED display panel is greater than or equal to the sum of the widths of two adjacent pixel units; when the width of the color shift improving layer is set, the width of the color shift improving layer does not need to be set to be large, the light transmittance of the OLED display panel is prevented from being influenced by the color shift improving layer, and the thickness of the display panel is prevented from being influenced by the whole layer of the color shift improving layer, so that the color shift improving layer is only set for the edge area of the display area, specifically, for example, light rays emitted by two adjacent pixel units in the edge area of one side of the display area can be diffused to a non-display area, the width of the color shift improving layer can be equal to or larger than the sum of the widths of the two adjacent pixel units, and the light rays of the pixel units can penetrate through the color shift improving layer, so that the light rays are converged to the edge area of the display area by the color shift improving layer, and the color shift of the OLED.
In one embodiment, the refractive index of the color shift improving layer is greater than 2, and the high refractive index of the color shift improving layer is utilized to converge light, so that the light in the edge area of the display area is polymerized, and the color shift of the OLED display panel is improved.
As shown in fig. 8, the edge region of the display panel 2 is provided with a color shift improving layer, the incident light 301 emitted from the light-emitting material layer is refracted by the color shift improving layer 26 to emit an emergent light 303, the normal is 302, and as can be seen from fig. 8, the light is converged toward the middle region of the display region after passing through the color shift improving layer, so that the light is prevented from being dispersed to the non-display region, and the color shift of the OLED display panel is improved.
In one embodiment, the color shift improving layer protrudes in a direction away from the substrate, and the thickness of the middle area of the color shift improving layer is greater than the thicknesses of the two side areas of the color shift improving layer, so that the thickness of the middle area of the color shift improving layer is set to be greater than the thicknesses of the two side areas of the color shift improving layer, and the color shift improving layer can further polymerize light while the refractive index of the color shift improving layer is greater, thereby further preventing the light from diffusing out of the display area, and improving the color shift of the OLED display panel.
In one embodiment, the optical improvement layer includes a common electrode layer and a cover layer, and the color shift is improved by the optical improvement layer while the color shift is improved by the color shift improvement layer.
In one embodiment, the color shift improving layer may be formed by evaporation, plasma enhanced chemical vapor deposition, inkjet printing, or atomic layer vapor deposition.
In one embodiment, the driving circuit layer includes a buffer layer, an active layer, a first gate insulating layer, a first metal layer, a second gate insulating layer, a second metal layer, an interlayer insulating layer, a source drain layer, a planarization layer, and a pixel electrode layer.
As shown in fig. 9, an embodiment of the present application provides an OLED display device including an OLED display panel and a protective cover plate 4, the protective cover plate 4 being bent at an edge region of a display area, the OLED display panel including:
a substrate 21;
a driver circuit layer 22 disposed on the substrate 21;
a light emitting material layer 23 disposed on the driving circuit layer 22;
an optical improvement layer 24 disposed on the luminescent material layer 23;
an encapsulation layer 25 disposed on the optical improvement layer 24;
in the edge region 271 of the display area 27, a color shift improving layer 26 is disposed in a direction of the optical improving layer 24 away from the substrate 21, a refractive index of the color shift improving layer 26 is greater than a refractive index of the optical improving layer 24, and the color shift improving layer 26 is located in a bending region and is bent toward the substrate 21.
Embodiments of the present application provide an OLED display device including an OLED display panel and a protective cover plate, the protective cover plate is bent at the edge region of the display region, the OLED display panel comprises a substrate, a driving circuit layer, a light emitting material layer, an optical improvement layer and an encapsulation layer, the driving circuit layer is disposed on the substrate, the light emitting material layer is disposed on the driving circuit layer, the optical improvement layer is arranged on the luminescent material layer, the packaging layer is arranged on the optical improvement layer, wherein, in the edge region of the display region, a color shift improving layer is arranged in the direction of the optical improving layer far away from the substrate, the refractive index of the color shift improving layer is larger than that of the optical improving layer, after the OLED display panel and the protective cover plate are assembled, the color cast improving layer is located in the bending area and is bent towards the substrate; through at the display area edge, the direction of keeping away from the substrate at optics improves the layer sets up the colour cast and improves the layer, and make the refracting index of colour cast improve the layer be greater than the refracting index of optics and improve the layer, and make colour cast improve the layer and assemble the back at OLED display panel and protection apron, the direction of orientation substrate is crooked, thereby make colour cast improve the layer can the polymerization light, make light can concentrate more, thereby reduce colour cast, it buckles to the edge region to have alleviated current AMOLED display device, lead to the technical problem of colour cast.
It should be noted that the bending of the protective cover plate is not shown in fig. 9, and the bending of the OLED display panel is also not shown, but in practice, the OLED display panel and the protective cover plate are both bent to form a bending region, and the bending region includes an edge region of the display panel, such as the bent OLED display panel in fig. 8, and the corresponding color shift improving layer is also located in the bending region and is bent toward the substrate, so as to correspondingly converge the light.
According to the above embodiment:
the embodiment of the application provides an OLED display panel and an OLED display device, the OLED display panel comprises a substrate, a driving circuit layer, a light-emitting material layer, an optical improvement layer and an encapsulation layer, the driving circuit layer is arranged on the substrate, the light-emitting material layer is arranged on the driving circuit layer, the optical improvement layer is arranged on the light-emitting material layer, the encapsulation layer is arranged on the optical improvement layer, a color cast improvement layer is arranged in the edge area of a display area in the direction that the optical improvement layer is far away from the substrate, the refractive index of the color cast improvement layer is larger than that of the optical improvement layer, and after the OLED display panel is assembled with a protective cover plate, the color cast improvement layer is positioned in a bending area and is bent towards the direction of the substrate; through at the display area edge, the direction of keeping away from the substrate at optics improves the layer sets up the colour cast and improves the layer, and make the refracting index of colour cast improve the layer be greater than the refracting index of optics and improve the layer, and make colour cast improve the layer and assemble the back at OLED display panel and protection apron, the direction of orientation substrate is crooked, thereby make colour cast improve the layer can the polymerization light, make light can concentrate more, thereby reduce colour cast, it buckles to the edge region to have alleviated current AMOLED display device, lead to the technical problem of colour cast.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The OLED display panel and the OLED display device provided in the embodiments of the present application are described in detail above, and specific examples are applied herein to explain the principles and embodiments of the present application, and the description of the embodiments above is only used to help understand the technical solutions and core ideas of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.
Claims (10)
1. An OLED display panel, comprising:
a substrate;
a driving circuit layer disposed on the substrate;
the light-emitting material layer is arranged on the driving circuit layer;
an optical improvement layer disposed on the luminescent material layer;
the packaging layer is arranged on the optical improvement layer;
the OLED display panel comprises a substrate, an optical improvement layer, a color shift improvement layer, a protection cover plate and an OLED display panel, wherein the optical improvement layer is arranged in the edge area of the display area and far away from the substrate, the color shift improvement layer is arranged in the direction of the substrate, the refractive index of the color shift improvement layer is larger than that of the optical improvement layer, and after the OLED display panel is assembled with the protection cover plate, the color shift improvement layer is located in a bending area and bends towards the direction of the substrate.
2. The OLED display panel of claim 1, wherein the color shift improving layer is disposed between the encapsulation layer and the optical improvement layer.
3. The OLED display panel of claim 1, wherein the encapsulation layer includes a first inorganic layer, an organic layer disposed on the first inorganic layer, and a second inorganic layer disposed on the organic layer, the color shift improving layer being disposed between the first inorganic layer and the organic layer.
4. The OLED display panel of claim 3, wherein the thickness of the color shift improving layer ranges from one third to one half of the thickness of the organic layer.
5. The OLED display panel of claim 1, wherein the encapsulation layer includes a first inorganic layer, an organic layer disposed on the first inorganic layer, and a second inorganic layer disposed on the organic layer, the color shift improving layer being disposed between the organic layer and the second inorganic layer.
6. The OLED display panel of claim 1, wherein the color shift improving layer is disposed in a direction of the encapsulation layer away from the optical improving layer.
7. The OLED display panel of claim 1, wherein the material of the color shift improving layer includes one of an organic material and an inorganic material.
8. The OLED display panel of claim 1, wherein the color shift improving layer is disposed around the OLED display panel and a projected area of the color shift improving layer on the substrate is smaller than a projected area of the light emitting material layer on the substrate.
9. The OLED display panel of claim 8, wherein the OLED display panel includes pixel cells, and a width of the color shift-improving layer at one side of the OLED display panel is greater than or equal to a sum of widths of two adjacent pixel cells.
10. An OLED display device comprising an OLED display panel and a protective cover plate, the protective cover plate being bent at an edge area of a display region, the OLED display panel comprising:
a substrate;
a driving circuit layer disposed on the substrate;
the light-emitting material layer is arranged on the driving circuit layer;
an optical improvement layer disposed on the luminescent material layer;
the packaging layer is arranged on the optical improvement layer;
in the edge region of the display area, a color shift improving layer is arranged in the direction of the optical improving layer far away from the substrate, the refractive index of the color shift improving layer is larger than that of the optical improving layer, and the color shift improving layer is located in the bending area and is bent towards the substrate.
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