WO2023087386A1 - Oled显示面板和oled显示装置 - Google Patents

Oled显示面板和oled显示装置 Download PDF

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Publication number
WO2023087386A1
WO2023087386A1 PCT/CN2021/134262 CN2021134262W WO2023087386A1 WO 2023087386 A1 WO2023087386 A1 WO 2023087386A1 CN 2021134262 W CN2021134262 W CN 2021134262W WO 2023087386 A1 WO2023087386 A1 WO 2023087386A1
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Prior art keywords
area
organic layer
layer
thickness
light
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PCT/CN2021/134262
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English (en)
French (fr)
Inventor
万之君
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惠州华星光电显示有限公司
深圳市华星光电半导体显示技术有限公司
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Application filed by 惠州华星光电显示有限公司, 深圳市华星光电半导体显示技术有限公司 filed Critical 惠州华星光电显示有限公司
Priority to US17/620,101 priority Critical patent/US20240032389A1/en
Publication of WO2023087386A1 publication Critical patent/WO2023087386A1/zh

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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
    • H10K59/80—Constructional details
    • H10K59/87—Passivation; Containers; Encapsulations
    • H10K59/873—Encapsulations
    • 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
    • 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
    • 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
    • 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
    • H10K59/352—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels the areas of the RGB subpixels being different
    • 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
    • H10K59/80—Constructional details
    • H10K59/875—Arrangements for extracting light from the devices
    • H10K59/879—Arrangements for extracting light from the devices comprising refractive means, e.g. lenses
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K2102/00—Constructional details relating to the organic devices covered by this subclass
    • H10K2102/301—Details of OLEDs
    • H10K2102/302—Details of OLEDs of OLED structures
    • H10K2102/3023—Direction of light emission
    • H10K2102/3026—Top emission
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K2102/00—Constructional details relating to the organic devices covered by this subclass
    • H10K2102/301—Details of OLEDs
    • H10K2102/351—Thickness
    • 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

Definitions

  • the present application relates to the field of display technology, in particular to an OLED display panel and an OLED display device.
  • OLED Organic Light-Emitting Diode (organic light-emitting diode) display devices are widely used due to their advantages such as self-illumination and flexibility.
  • the top-emitting OLED display device has more advantages than the bottom-emitting OLED display device because it does not affect the circuit design, has lower operating voltage at the same brightness, longer device life, and lower power consumption.
  • the OLED display device there are two problems: one is that when the light is emitted, part of the light with a large incident angle will be totally reflected and cannot be emitted, resulting in a decrease in light output efficiency; the other is that the top-emitting OLED display device has a strong microcavity effect.
  • the light emitted from different directions has different optical paths, resulting in different microcavity effects, which can easily cause chromatic aberration, resulting in poor brightness.
  • the light extraction layer is arranged on the OLED device in the prior art, the light extraction layer can only solve the problem of reduced light extraction efficiency, but cannot solve the technical problems of chromatic aberration and uneven brightness.
  • the existing OLED display device has the technical problem of uneven brightness of the OLED display device caused by different optical paths of light rays from different directions.
  • Embodiments of the present application provide an OLED display panel and an OLED display device, which are used to alleviate the technical problem of uneven brightness of OLED display devices caused by different optical paths of light rays from different directions in existing OLED display devices.
  • An embodiment of the present application provides an OLED display panel, and the OLED display panel includes:
  • a driving circuit layer disposed on one side of the substrate
  • a light-emitting functional layer disposed on a side of the driving circuit layer away from the substrate;
  • An encapsulation layer disposed on a side of the light-emitting functional layer away from the driving circuit layer;
  • the OLED display panel includes a display area and a non-display area
  • the encapsulation layer includes an organic layer
  • the thickness of the part of the organic layer located in the middle area of the display area is greater than that of the organic layer located in the display area. The thickness of the part of the edge area.
  • the thickness of the organic layer decreases gradually from the middle area of the display area to the edge area of the display area.
  • the display area includes a light-emitting area and a non-light-emitting area, and the thickness of the part of the organic layer located in the light-emitting area is greater than the thickness of the part of the organic layer located in the non-light-emitting area.
  • the thickness of the part of the organic layer located in the middle region of the light emitting region is greater than the thickness of the part of the organic layer located in the edge region of the light emitting region.
  • the OLED display panel includes red sub-pixels, green sub-pixels and blue sub-pixels, the shape of the organic layer corresponding to the red sub-pixel is the same as the shape of the organic layer corresponding to the green sub-pixel Differently, the shape of the organic layer at the position corresponding to the green sub-pixel is different from the shape of the organic layer at the position corresponding to the blue sub-pixel.
  • the encapsulation layer further includes a first inorganic layer and a second inorganic layer, the first inorganic layer is disposed between the organic layer and the light-emitting functional layer, and the second inorganic layer is disposed On the side of the organic layer away from the first inorganic layer, each region of the first inorganic layer has the same thickness, and each region of the second inorganic layer has the same thickness.
  • the surface of the organic layer in contact with the first inorganic layer is a plane
  • the organic layer is on the side in contact with the second inorganic layer
  • the organic layer located in the middle region of the light emitting region The height of the layer is greater than the height of the region located at the edge of the light-emitting region.
  • the edge region includes a first edge region and a second edge region located on both sides of the middle region, the thickness of the organic layer decreases from the middle region to the first edge region, so The thickness of the organic layer decreases gradually from the middle region to the second edge region.
  • the edge region includes a third edge region, a fourth edge region, a fifth edge region and a sixth edge region located around the middle region, and the thickness of the organic layer extends from the middle region to The third edge area decreases gradually, the thickness of the organic layer decreases from the middle area to the fourth edge area, the thickness of the organic layer decreases from the middle area to the fifth edge area, the The thickness of the organic layer decreases from the middle region to the sixth edge region.
  • the refractive index of the first inorganic layer is smaller than the refractive index of the organic layer, and the refractive index of the organic layer is smaller than the refractive index of the second inorganic layer.
  • the OLED display panel further includes a protective film, the protective film is disposed on the side of the second inorganic layer away from the organic layer, the protective layer is located in the middle area of the light emitting region
  • the thickness of the part is less than the thickness of the part of the protective layer located in the edge area of the light emitting area, and the thickness of the part of the protective layer located in the edge area of the light emitting area is less than the thickness of the part of the protective layer located in the non-light emitting area.
  • the thickness of the section of the zone is less than the thickness of the part of the protective layer located in the edge area of the light emitting area.
  • the OLED display panel further includes a protective film, the protective film is disposed on a side of the second inorganic layer away from the organic layer, and the thickness of each region of the protective film is equal.
  • the encapsulation layer further includes a first inorganic layer and a second inorganic layer, the first inorganic layer is disposed between the organic layer and the light-emitting functional layer, and the second inorganic layer is disposed On the side of the organic layer away from the first inorganic layer, each area of the first inorganic layer has the same thickness, and the thickness of the second inorganic layer located in the middle area of the light emitting area is less than the thickness of the second inorganic layer.
  • the thickness of the part of the second inorganic layer located at the edge region of the light emitting region, and the thickness of the part of the second inorganic layer located at the edge region of the light emitting region is smaller than the thickness of the part of the second inorganic layer located at the edge region of the light emitting region The thickness of the section of the zone.
  • an embodiment of the present application provides an OLED display device
  • the OLED display device includes an OLED display panel and electronic components
  • the OLED display panel includes:
  • a driving circuit layer disposed on one side of the substrate
  • a light-emitting functional layer disposed on a side of the driving circuit layer away from the substrate;
  • An encapsulation layer disposed on a side of the light-emitting functional layer away from the driving circuit layer;
  • the OLED display panel includes a display area and a non-display area
  • the encapsulation layer includes an organic layer
  • the thickness of the part of the organic layer located in the middle area of the display area is greater than that of the organic layer located in the display area. The thickness of the part of the edge area.
  • the thickness of the organic layer decreases gradually from the middle area of the display area to the edge area of the display area.
  • the display area includes a light-emitting area and a non-light-emitting area, and the thickness of the part of the organic layer located in the light-emitting area is greater than the thickness of the part of the organic layer located in the non-light-emitting area.
  • the thickness of the part of the organic layer located in the middle region of the light emitting region is greater than the thickness of the part of the organic layer located in the edge region of the light emitting region.
  • the OLED display panel includes red sub-pixels, green sub-pixels and blue sub-pixels, the shape of the organic layer corresponding to the red sub-pixel is the same as the shape of the organic layer corresponding to the green sub-pixel Differently, the shape of the organic layer at the position corresponding to the green sub-pixel is different from the shape of the organic layer at the position corresponding to the blue sub-pixel.
  • the encapsulation layer further includes a first inorganic layer and a second inorganic layer, the first inorganic layer is disposed between the organic layer and the light-emitting functional layer, and the second inorganic layer is disposed On the side of the organic layer away from the first inorganic layer, each region of the first inorganic layer has the same thickness, and each region of the second inorganic layer has the same thickness.
  • the surface of the organic layer in contact with the first inorganic layer is a plane
  • the organic layer is on the side in contact with the second inorganic layer
  • the organic layer located in the middle region of the light emitting region The height of the layer is greater than the height of the region located at the edge of the light-emitting region.
  • the edge region includes a first edge region and a second edge region located on both sides of the middle region, the thickness of the organic layer decreases from the middle region to the first edge region, so The thickness of the organic layer decreases gradually from the middle region to the second edge region.
  • the present application provides an OLED display panel and an OLED display device;
  • the OLED display panel includes a substrate, a driving circuit layer, a light-emitting functional layer and a packaging layer, the driving circuit layer is arranged on one side of the substrate, and the light-emitting functional layer is arranged on the driving circuit layer
  • the encapsulation layer is arranged on the side of the light-emitting functional layer away from the driving circuit layer, wherein the OLED display panel includes a display area and a non-display area, the encapsulation layer includes an organic layer, and the organic layer is located in the middle area of the display area. The thickness of the part is greater than the thickness of the part of the organic layer located in the edge region of the display area.
  • This application designs the organic layer in the encapsulation layer so that the thickness of the part of the organic layer located in the middle area of the display area is greater than the thickness of the part of the organic layer located in the edge area of the display area, so that there is no need for a light extraction layer.
  • the improvement of the light extraction efficiency is achieved, and the thickness of the OLED display panel is reduced.
  • the gap between the optical path in the middle area of the display area and the optical path in the edge area of the display area is reduced, which alleviates the problem. Even the problem of different optical paths of light rays in different directions of the OLED display device is eliminated, the chromatic aberration in different directions is reduced or even eliminated, and the problem of uneven brightness is avoided.
  • FIG. 1 is a schematic diagram of a first type of OLED display panel provided by an embodiment of the present application.
  • FIG. 2 is a second schematic diagram of an OLED display panel provided by an embodiment of the present application.
  • FIG. 3 is a third schematic diagram of an OLED display panel provided by an embodiment of the present application.
  • FIG. 4 is a schematic diagram of a first type of light-emitting area provided by an embodiment of the present application.
  • FIG. 5 is a second schematic diagram of the light emitting area provided by the embodiment of the present application.
  • FIG. 6 is a schematic diagram of an OLED display device provided by an embodiment of the present application.
  • the embodiments of the present application aim at the technical problem of uneven brightness of the OLED display device caused by the different optical paths of light rays in different directions in the existing OLED display device, and provide an OLED display panel and an OLED display device to alleviate the technical problem .
  • an embodiment of the present application provides an OLED display panel
  • the OLED display panel 1 includes:
  • a driving circuit layer 12 disposed on one side of the substrate 11;
  • a light-emitting functional layer 13 disposed on a side of the driving circuit layer 12 away from the substrate 11;
  • the encapsulation layer 14 is disposed on the side of the light-emitting functional layer 13 away from the driving circuit layer 12;
  • the OLED display panel 1 includes a display area 151 and a non-display area 152
  • the encapsulation layer 14 includes an organic layer 142
  • the thickness L1 of the part of the organic layer 142 located in the middle area of the display area 151 is greater than the The thickness L2 of the portion of the organic layer 142 located at the edge region of the display area 151 .
  • An embodiment of the present application provides an OLED display panel.
  • the organic layer in the encapsulation layer is designed so that the thickness of the organic layer located in the middle area of the display area is greater than the thickness of the organic layer located in the edge area of the display area. Partial thickness, no light extraction layer is needed, and the light extraction efficiency is improved through the organic layer, which reduces the thickness of the OLED display panel.
  • the optical distance in the middle area of the display area alleviates or even eliminates the problem of different optical paths of light rays in different directions of the OLED display device, reduces or even eliminates the color difference in different directions, and avoids the problem of uneven brightness.
  • the middle area and the edge area refer to the area division in the general definition.
  • the display area can be divided into three sequentially from the non-display area near one side to the non-display area near the other side. area, the area between two areas close to the non-display area is the middle area, and the two areas close to the non-display area are the edge areas.
  • the middle area and the edge area are equally divided, that is, the middle area and each edge Whether the areas are equal or not is not limited here.
  • the display area is divided into three areas from left to right.
  • the area of the middle area can be equal to the area of the edge areas on both sides, but the area of the middle area can also be larger than that of the two sides.
  • the area of the edge region can be equal to the area of the edge areas on both sides.
  • the thickness of the organic layer decreases gradually from the middle area of the display area to the non-display area. That is, by making the thickness of the organic layer gradually decrease from the middle area to the non-display area, so that from a large viewing angle (after passing through multiple film layers, the light may be emitted from the edge of the non-display area, so the large viewing angle includes the edge area of the display area and also includes the non-display area.
  • the gap between the optical path of the light emitted in the area) and the light in the middle area is narrowed, which can avoid the problem of uneven brightness caused by the optical path difference of the light in different directions.
  • the organic layer can be designed as a curved surface extending from the middle area to both sides, thereby reducing the optical path difference of light rays in different directions and reducing chromatic aberration; and for small-sized display devices, the light of the surrounding light
  • the optical path difference between the optical path of the OLED display device and the optical path of the middle area will cause obvious chromatic aberration.
  • the organic layer can be designed as a spherical surface extending from the middle area to the surrounding area, so that the optical path of the light around the OLED display device is the same as that of the OLED display device.
  • the distance between the light paths of the light in the middle area of the display device is narrowed, so that uneven brightness and chromatic aberration are reduced.
  • the non-display area can be an arc with the same radian as the display area, or the non-display area can be flat, but the thickness of the non-display area is smaller than the thickness of the display area, thereby reducing the size of the display area.
  • the thickness of the organic layer 142 decreases gradually from the middle area of the display area 151 to the edge area of the display area 151 . That is, the display area of the display panel can be made to appear as a curved surface, and the thickness of the organic layer is gradually reduced from the middle area to the edge, thereby improving the color difference and uneven brightness of the display device.
  • the display region 151 includes a light-emitting region 21 and a non-light-emitting region 22, and the thickness L5 of the part of the organic layer 142 located in the light-emitting region 21 is greater than that of the organic layer 142 is located at the thickness L3 of the portion of the non-light-emitting region 22 .
  • the optical path difference of light rays in different directions in each light-emitting area can be reduced, and the difference between each light-emitting area can be avoided.
  • the optical path difference of the light in the direction causes color shift in each light-emitting pixel or light-emitting sub-pixel, thereby improving the technical problems of color difference and uneven brightness of the display device.
  • the light-emitting area generally refers to the light-emitting area of the sub-pixel, so the arrangement at the pixel level is not involved here, but the embodiment of the present application is not limited thereto, and the above-mentioned arrangement can also be used for the arrangement at the pixel level.
  • the thickness of the organic layer at the position corresponding to the pixel is made greater than the thickness of the organic layer at the position between the pixels, which will not be repeated here.
  • the thickness L5 of the part of the organic layer 142 located in the middle region of the light emitting region 21 is greater than the thickness L5 of the part of the organic layer 142 located in the edge region of the light emitting region 21 The thickness L4.
  • the thickness of the organic layer in the middle region of the light emitting region greater than the thickness of the organic layer in the edge region of the light emitting region, the difference between the optical path of the light in the middle region of the light emitting region and the light path in the edge region of the light emitting region is reduced, Then the brightness and color of light emitted from a single sub-pixel are the same at all angles, thereby avoiding the problems of uneven brightness or color difference.
  • the OLED display panel 1 includes a red sub-pixel 231, a green sub-pixel 232, and a blue sub-pixel 233, and the red sub-pixel 231 corresponds to the position 211 of the organic layer 142.
  • the shape is the same as the shape of the organic layer 142 corresponding to the position 212 of the green sub-pixel 232, and the shape of the organic layer 142 corresponding to the position 212 of the green sub-pixel 232 is the same as that of the organic layer 142 corresponding to the position 213 of the blue sub-pixel 233. same shape.
  • each light-emitting sub-pixel When arranging the organic layer, corresponding design is carried out for each light-emitting sub-pixel, so that the organic layer of each light-emitting sub-pixel can present a shape whose thickness decreases from the middle to both sides, thereby improving the brightness of each light-emitting sub-pixel Unevenness and chromatic aberration problems.
  • red light-emitting devices, green light-emitting devices and blue light-emitting devices refer to red sub-pixels, green sub-pixels and blue sub-pixels respectively, but in practice red sub-pixels refer to All the film layers that make the red light-emitting device emit light, the green sub-pixel refers to all the film layers that can make the green light-emitting device emit light, and the blue sub-pixel refers to all the film layers that can make the blue light-emitting device emit light.
  • the foregoing embodiments have been described in detail by taking the same shape of sub-pixels of different colors as an example.
  • the luminous sub-pixels of different colors will be designed with different shapes and different thicknesses. Therefore, the corresponding luminous sub-pixels of different colors can be Design the organic layer.
  • the OLED display panel includes red sub-pixels, green sub-pixels and blue sub-pixels, and the shape of the organic layer corresponding to the red sub-pixel is the same as that of the organic layer corresponding to the green sub-pixel.
  • the shapes are different, and the shape of the organic layer corresponding to the green sub-pixel is different from the shape of the organic layer corresponding to the blue sub-pixel. That is, sub-pixels of different shapes and sizes can be designed accordingly, so that uneven brightness and color difference of different sub-pixels can be correspondingly improved.
  • the encapsulation layer 14 further includes a first inorganic layer 141 and a second inorganic layer 143, and the first inorganic layer 141 is disposed between the organic layer 142 and the light emitting layer. Between the functional layers 13, the second inorganic layer 143 is disposed on the side of the organic layer 142 away from the first inorganic layer 141, the thickness of each region of the first inorganic layer 141 is equal, and the second Each region of the inorganic layer 143 has the same thickness.
  • the process of the first inorganic layer and the second inorganic layer is not changed, and the first inorganic layer and the second inorganic layer are respectively formed on the light-emitting functional layer and the organic layer.
  • the second inorganic layer reduces the difficulty of the process. Therefore, the second inorganic layer will appear as a curved surface on the organic layer, and the optical path difference of light rays in different directions can be reduced through this structure, so as to avoid the problems of uneven brightness and chromatic aberration.
  • the surface of the organic layer in contact with the first inorganic layer is a plane
  • the organic layer is on the side in contact with the second inorganic layer
  • the height of the organic layer located in the middle region of the light emitting region greater than the height of the edge region located in the light-emitting region. That is, when arranging the first inorganic layer, the first inorganic layer is kept in a planar arrangement, while the organic layer is arranged at different heights by the side away from the first inorganic layer, so as to realize the setting of the thickness of different regions of the organic layer.
  • the above-mentioned embodiments have been described in detail by taking the surface in contact with the first inorganic layer and the organic layer as a plane, but the embodiments of the present application are not limited thereto.
  • the surface in contact with the first inorganic layer and the organic layer is a curved surface, and through the first inorganic layer Grooves are formed, and the organic layer forms protrusions.
  • the organic layer is formed as a curved surface on the side away from the first inorganic layer, so that the thickness of the organic layer in the middle area of the light-emitting area is greater than the thickness of the edge area of the light-emitting area, and greater than Thickness in the non-luminous region.
  • the organic layer can be set as a curved surface, so that the thickness of the organic layer is successively reduced, thereby improving The problem of uneven brightness and chromatic aberration caused by the optical path difference of light rays in different directions.
  • the edge region includes a first edge region 214 and a second edge region 216 located on both sides of the middle region 215, and the thickness of the organic layer 142 ranges from The middle region 215 decreases gradually toward the first edge region 214 , and the thickness of the organic layer 142 decreases gradually from the middle region 215 to the second edge region 216 .
  • the optical path of the light is from the middle of the light-emitting area As the area increases toward the edge areas on both sides, the optical path difference of light rays in different directions can be reduced to avoid the problems of uneven brightness and chromatic aberration.
  • the edge region includes a third edge region 217, a fourth edge region 218, a fifth edge region 219 and a sixth edge region located around the middle region 221.
  • region 220 the thickness of the organic layer 142 decreases gradually from the middle region 221 to the third edge region 217, and the thickness of the organic layer 142 decreases gradually from the middle region 221 to the fourth edge region 218, so The thickness of the organic layer 142 decreases from the middle region 221 to the fifth edge region 219 , and the thickness of the organic layer 142 decreases from the middle region 221 to the sixth edge region 220 .
  • the optical path of the light is from The middle area of the light-emitting area increases toward the surrounding edge area, which can reduce the optical path difference of light rays in different directions, and avoid the problems of uneven brightness and chromatic aberration.
  • the refractive index of the first inorganic layer is smaller than that of the organic layer, and the refractive index of the organic layer is smaller than that of the second inorganic layer.
  • the OLED display panel 1 further includes a protective film 16 disposed on a side of the second inorganic layer 143 away from the organic layer 142 .
  • a protective film 16 By setting a protective film, the encapsulation layer is protected and the intrusion of water and oxygen is blocked.
  • the OLED display panel further includes a protective film, the protective film is disposed on a side of the second inorganic layer away from the organic layer, and the thickness of each region of the protective film is equal.
  • the thickness of the protective film can be kept consistent, but since the product is molded, it will be covered by the protective glass, which can eliminate the unevenness of the OLED display panel. Therefore, the surface of the protective layer of the OLED display panel can be set is uneven.
  • the OLED display panel further includes a protective film, the protective film is disposed on the side of the second inorganic layer away from the organic layer, and the protective layer is located in the middle area of the light emitting region
  • the thickness of the part of the protective layer is less than the thickness of the part of the protective layer located in the edge area of the light emitting area, and the thickness of the part of the protective layer located in the edge area of the light emitting area is less than the thickness of the part of the protective layer located in the non- The thickness of the portion of the light emitting area.
  • the thickness of the protective layer By correspondingly designing the thickness of the protective layer according to the setting of the organic layer, the thickness of the part of the protective layer located in the middle area of the light-emitting area is reduced, or the thickness of the part of the protective layer located in the edge area of the light-emitting area is increased, so that The thicknesses of the different regions of the protective layer and the thicknesses of the corresponding regions of the organic layer are arranged oppositely, so that the OLED display panel can remain flat after the protective film is provided.
  • the surface of the protective film on a side away from the second inorganic layer is a plane. That is, when the protective film is provided, the protective layer is formed on the second inorganic layer, and the side of the protective film away from the second inorganic layer is set as a plane, so that after the protective film is formed, the OLED display panel has a flat surface.
  • the encapsulation layer further includes a first inorganic layer and a second inorganic layer, the first inorganic layer is disposed between the organic layer and the light-emitting functional layer, and the second inorganic layer It is arranged on the side of the organic layer away from the first inorganic layer, the thickness of each region of the first inorganic layer is equal, and the thickness of the part of the second inorganic layer located in the middle region of the light emitting region is less than The thickness of the part of the second inorganic layer located in the edge area of the light emitting area, and the thickness of the part of the second inorganic layer located in the edge area of the light emitting area is smaller than the thickness of the part of the second inorganic layer located in the edge area of the light emitting area.
  • the thickness of the section of the zone By reducing the thickness of the part of the second inorganic layer located in the middle region of the light emitting region, or increasing the thickness of the part of the second inorganic layer located in the edge region of the light emitting region, the second inorganic layer can reduce or even eliminate the curvature, Therefore, the second inorganic layer is kept flat, so that the OLED display panel is planarized.
  • the surface of the second inorganic layer away from the organic layer can be made flat, and the OLED display panel can be kept flat by setting the second inorganic layer to be flat.
  • the problem of uneven brightness and color difference caused by the optical path difference of light rays in different directions cannot be solved by the existing OLED display panel with a light extraction layer.
  • the organic layer By designing the organic layer, Using the organic layer to replace the light extraction layer can also solve the problems of uneven brightness and chromatic aberration caused by the optical path difference of light rays in different directions.
  • the thickness of different regions of the light extraction layer is set to be different to solve the brightness unevenness and color difference caused by the optical path difference of light in different directions, since the application is designed for the organic layer, the reduction The thickness of the OLED display panel is reduced.
  • the encapsulation layer structure in some OLED display panels is a multi-layered structure of inorganic layer/organic layer/inorganic layer/organic layer/inorganic layer, and the multi-layer organic layer can be correspondingly Design, the inorganic layer is designed correspondingly, and the specific design is based on reducing the optical path difference of light rays in different directions, which will not be repeated here.
  • the transmittance of the organic layer is greater than 90%, and the refractive index of the organic layer is greater than 1.7.
  • the material of the organic layer includes at least one of acrylic resin and epoxy resin.
  • the organic layer in order to realize the design of the organic layer in the present application, can be formed by coating or inkjet printing, specifically, after forming a film by coating or inkjet printing, it can be placed by flow or Pre-cure after heating or ultraviolet light irradiation, so that the annual increase of the pre-cured film layer, and then carry out the embossing process to realize the optical curved surface design of the organic layer, and finally form the organic layer by heat curing or ultraviolet light curing.
  • the viscosity can be less than 50 cPa.s, and the resin is pre-cured.
  • the viscosity can be made to be 40,000 to 200,000 cPa.s, so that it is easier to take out the resin during coating or inkjet printing.
  • the viscosity is increased to avoid The resin shifts or falls off, which improves the film-forming effect.
  • the arc when forming the organic layer, in order to reduce the difficulty of the process, the arc can be extended to the non-light-emitting area or the non-display area; in order to improve the effect of improving the color difference and uneven brightness, the corresponding arc can be designed in each sub-pixel.
  • the driving circuit layer 12 includes an active layer 121, a first gate insulating layer 122, a first metal layer 123, a second gate insulating layer 124, a second metal layer 125 , an interlayer insulating layer 126 , a source-drain layer 127 and a planarization layer 128 .
  • the light emitting functional layer 13 includes a pixel electrode layer 131 , a pixel definition layer 132 , a light emitting material layer 133 and a common electrode layer 134 .
  • an embodiment of the present application provides an OLED display device, as shown in FIG. 2 and FIG. 6 , the OLED display device includes an OLED display panel and electronic components 31, and the OLED display panel includes:
  • a driving circuit layer 12 disposed on one side of the substrate 11;
  • a light-emitting functional layer 13 disposed on a side of the driving circuit layer 12 away from the substrate 11;
  • the encapsulation layer 14 is disposed on the side of the light-emitting functional layer 13 away from the driving circuit layer 12;
  • the OLED display panel 1 includes a display area 151 and a non-display area 152
  • the encapsulation layer 14 includes an organic layer 142
  • the thickness L1 of the part of the organic layer 142 located in the middle area of the display area 151 is greater than the The thickness L2 of the portion of the organic layer 142 located at the edge region of the display area 151 .
  • An embodiment of the present application provides an OLED display device.
  • the OLED display device includes an OLED display panel and electronic components.
  • the OLED display panel designs the organic layer in the encapsulation layer so that the organic layer is located in the middle area of the display area. If the thickness is greater than the thickness of the part of the organic layer located at the edge of the display area, the light extraction layer is not needed, and the light extraction efficiency is improved through the organic layer, which reduces the thickness of the OLED display panel.
  • the thickness of the organic layer by changing the thickness of the organic layer, it makes The gap between the optical path located in the middle area of the display area and the optical path located in the edge area of the display area is reduced, which alleviates or even eliminates the problem of different optical paths of light rays in different directions in OLED display devices, and reduces or even eliminates the problem of different optical paths in different directions.
  • the chromatic aberration avoids the problem of uneven brightness.
  • the thickness of the organic layer decreases gradually from the middle area of the display area to the edge area of the display area.
  • the display area includes a light-emitting area and a non-light-emitting area, and the thickness of the part of the organic layer located in the light-emitting area is greater than that of the organic layer located in the non-light-emitting area. the thickness of the part.
  • the thickness of the part of the organic layer located in the middle region of the light emitting region is greater than the thickness of the part of the organic layer located in the edge region of the light emitting region.
  • the OLED display panel includes red sub-pixels, green sub-pixels and blue sub-pixels, and the shape of the organic layer corresponding to the red sub-pixel is the same as that of the green sub-pixel.
  • the shapes of the organic layers at the corresponding positions are different, and the shape of the organic layer at the corresponding position of the green sub-pixel is different from the shape of the organic layer at the corresponding position of the blue sub-pixel.
  • the encapsulation layer further includes a first inorganic layer and a second inorganic layer, the first inorganic layer is disposed between the organic layer and the light-emitting functional layer, The second inorganic layer is disposed on a side of the organic layer away from the first inorganic layer, and the thicknesses of each region of the first inorganic layer are equal, and the thickness of each region of the second inorganic layer is equal.
  • the surface of the organic layer in contact with the first inorganic layer is a plane, and the organic layer is located on the side of the second inorganic layer in contact with the The height of the organic layer in the middle area of the light emitting area is greater than that in the edge area of the light emitting area.
  • the edge region includes a first edge region and a second edge region located on both sides of the middle region, and the thickness of the organic layer is from the middle region to the The first edge region decreases, and the thickness of the organic layer decreases from the middle region to the second edge region.
  • the edge region includes a third edge region, a fourth edge region, a fifth edge region and a sixth edge region located around the middle region, and the organic layer
  • the thickness of the organic layer decreases from the middle area to the third edge area
  • the thickness of the organic layer decreases from the middle area to the fourth edge area
  • the thickness of the organic layer goes from the middle area to the third edge area.
  • the fifth edge area decreases gradually
  • the thickness of the organic layer decreases from the middle area to the sixth edge area.
  • Embodiments of the present application provide an OLED display panel and an OLED display device.
  • the OLED display panel includes a substrate, a driving circuit layer, a light-emitting functional layer, and a packaging layer.
  • the driving circuit layer is disposed on the substrate side, and the light-emitting functional layer is disposed on the driving
  • the side of the circuit layer away from the substrate, the encapsulation layer is arranged on the side of the light-emitting functional layer away from the driving circuit layer, wherein the OLED display panel includes a display area and a non-display area, the encapsulation layer includes an organic layer, and the organic layer is located in the middle of the display area
  • the thickness of the part of the region is greater than the thickness of the part of the organic layer located in the edge region of the display region.
  • This application designs the organic layer in the encapsulation layer so that the thickness of the part of the organic layer located in the middle area of the display area is greater than the thickness of the part of the organic layer located in the edge area of the display area, so that there is no need for a light extraction layer.
  • the improvement of the light extraction efficiency is achieved, and the thickness of the OLED display panel is reduced.
  • the gap between the optical path in the middle area of the display area and the optical path in the edge area of the display area is reduced, which alleviates the problem. Even the problem of different optical paths of light rays in different directions of the OLED display device is eliminated, the chromatic aberration in different directions is reduced or even eliminated, and the problem of uneven brightness is avoided.

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Abstract

一种OLED显示面板（1）和OLED显示装置，OLED显示面板（1）通过使有机层（142）位于显示区（151）的中间区域的部分的厚度，大于有机层（142）位于显示区（151）的边缘区域的部分的厚度，缩小了显示区（151）的中间区域与边缘区域的光程差，缓解甚至消除了OLED显示器件的不同方向的光线的光程不同的问题。

Description

OLED显示面板和OLED显示装置 技术领域
本申请涉及显示技术领域，尤其是涉及一种OLED显示面板和OLED显示装置。
 背景技术
OLED（Organic Light-Emitting Diode，有机发光二极管）显示器件由于自发光、可实现柔性等优点被广泛应用。而顶发光型OLED显示器件由于不影响线路设计、在相同亮度下工作电压更低、器件使用寿命更长、功耗更低，相较于底发光型OLED显示器件更具优势。在OLED显示器件中，会存在两个问题：一是在出光时，部分入射角大的光会发生全反射导致无法射出，造成出光效率降低，二是顶发光OLED显示器件具有强微腔效应，不同方向射出的光由于光程不同，导致微腔效应不同，极易产生色差，导致亮度不佳的问题。即使现有技术中采用光取出层设置在OLED器件上，但该光取出层仅能解决出光效率降低的问题，无法解决色差和亮度不均的技术问题。
所以，现有OLED显示器件存在不同方向的光线的光程不同所导致的OLED显示器件的亮度不均的技术问题。
 技术问题
本申请实施例提供一种OLED显示面板和OLED显示装置，用以缓解现有OLED显示器件存在不同方向的光线的光程不同所导致的OLED显示器件的亮度不均的技术问题。
 技术解决方案
为解决上述问题，本申请提供的技术方案如下：
本申请实施例提供一种OLED显示面板，该OLED显示面板包括：
衬底；
驱动电路层，设置于所述衬底一侧；
发光功能层，设置于所述驱动电路层远离所述衬底的一侧；
封装层，设置于所述发光功能层远离所述驱动电路层的一侧；
其中，所述OLED显示面板包括显示区和非显示区，所述封装层包括有机层，所述有机层位于所述显示区的中间区域的部分的厚度，大于所述有机层位于所述显示区的边缘区域的部分的厚度。
在一些实施例中，所述有机层从所述显示区的中间区域向所述显示区的边缘区域的厚度递减。
在一些实施例中，所述显示区包括发光区和非发光区，所述有机层位于所述发光区的部分的厚度，大于所述有机层位于所述非发光区的部分的厚度。
在一些实施例中，所述有机层位于所述发光区的中间区域的部分的厚度，大于所述有机层位于所述发光区的边缘区域的部分的厚度。
在一些实施例中，所述OLED显示面板包括红色子像素、绿色子像素和蓝色子像素，所述红色子像素对应位置的有机层的形状与所述绿色子像素对应位置的有机层的形状不同，所述绿色子像素对应位置的有机层的形状与所述蓝色子像素对应位置的有机层的形状不同。
在一些实施例中，所述封装层还包括第一无机层和第二无机层，所述第一无机层设置于所述有机层与所述发光功能层之间，所述第二无机层设置于所述有机层远离所述第一无机层的一侧，所述第一无机层的各个区域的厚度相等，所述第二无机层的各个区域的厚度相等。
在一些实施例中，所述有机层与所述第一无机层接触的表面为平面，所述有机层在与所述第二无机层接触的一侧，位于所述发光区的中间区域的有机层的高度，大于位于所述发光区的边缘区域的高度。
在一些实施例中，所述边缘区域包括位于所述中间区域两侧的第一边缘区域和第二边缘区域，所述有机层的厚度从所述中间区域向所述第一边缘区域递减，所述有机层的厚度从所述中间区域向所述第二边缘区域递减。
在一些实施例中，所述边缘区域包括位于所述中间区域四周的第三边缘区域、第四边缘区域、第五边缘区域和第六边缘区域，所述有机层的厚度从所述中间区域向所述第三边缘区域递减，所述有机层的厚度从所述中间区域向所述第四边缘区域递减，所述有机层的厚度从所述中间区域向所述第五边缘区域递减，所述有机层的厚度从所述中间区域向所述第六边缘区域递减。
在一些实施例中，所述第一无机层的折射率小于所述有机层的折射率，所述有机层的折射率小于所述第二无机层的折射率。
在一些实施例中，所述OLED显示面板还包括保护膜，所述保护膜设置于所述第二无机层远离所述有机层的一侧，所述保护层位于所述发光区的中间区域的部分的厚度，小于所述保护层位于所述发光区的边缘区域的部分的厚度，且所述保护层位于所述发光区的边缘区域的部分的厚度，小于所述保护层位于所述非发光区的部分的厚度。
在一些实施例中，所述OLED显示面板还包括保护膜，所述保护膜设置于所述第二无机层远离所述有机层的一侧，且所述保护膜的各个区域的厚度相等。
在一些实施例中，所述封装层还包括第一无机层和第二无机层，所述第一无机层设置于所述有机层与所述发光功能层之间，所述第二无机层设置于所述有机层远离所述第一无机层的一侧，所述第一无机层的各个区域的厚度相等，所述第二无机层位于所述发光区的中间区域的部分的厚度，小于所述第二无机层位于所述发光区的边缘区域的部分的厚度，且所述第二无机层位于所述发光区的边缘区域的部分的厚度，小于所述第二无机层位于所述非发光区的部分的厚度。
同时，本申请实施例提供一种OLED显示装置，该OLED显示装置包括OLED显示面板和电子元件，所述OLED显示面板包括：
衬底；
驱动电路层，设置于所述衬底一侧；
发光功能层，设置于所述驱动电路层远离所述衬底的一侧；
封装层，设置于所述发光功能层远离所述驱动电路层的一侧；
其中，所述OLED显示面板包括显示区和非显示区，所述封装层包括有机层，所述有机层位于所述显示区的中间区域的部分的厚度，大于所述有机层位于所述显示区的边缘区域的部分的厚度。
在一些实施例中，所述有机层从所述显示区的中间区域向所述显示区的边缘区域的厚度递减。
在一些实施例中，所述显示区包括发光区和非发光区，所述有机层位于所述发光区的部分的厚度，大于所述有机层位于所述非发光区的部分的厚度。
在一些实施例中，所述有机层位于所述发光区的中间区域的部分的厚度，大于所述有机层位于所述发光区的边缘区域的部分的厚度。
在一些实施例中，所述OLED显示面板包括红色子像素、绿色子像素和蓝色子像素，所述红色子像素对应位置的有机层的形状与所述绿色子像素对应位置的有机层的形状不同，所述绿色子像素对应位置的有机层的形状与所述蓝色子像素对应位置的有机层的形状不同。
在一些实施例中，所述封装层还包括第一无机层和第二无机层，所述第一无机层设置于所述有机层与所述发光功能层之间，所述第二无机层设置于所述有机层远离所述第一无机层的一侧，所述第一无机层的各个区域的厚度相等，所述第二无机层的各个区域的厚度相等。
在一些实施例中，所述有机层与所述第一无机层接触的表面为平面，所述有机层在与所述第二无机层接触的一侧，位于所述发光区的中间区域的有机层的高度，大于位于所述发光区的边缘区域的高度。
在一些实施例中，所述边缘区域包括位于所述中间区域两侧的第一边缘区域和第二边缘区域，所述有机层的厚度从所述中间区域向所述第一边缘区域递减，所述有机层的厚度从所述中间区域向所述第二边缘区域递减。
 有益效果
本申请提供一种OLED显示面板和OLED显示装置；该OLED显示面板包括衬底、驱动电路层、发光功能层和封装层，驱动电路层设置于衬底一侧，发光功能层设置于驱动电路层远离衬底的一侧，封装层设置于发光功能层远离驱动电路层的一侧，其中，OLED显示面板包括显示区和非显示区，封装层包括有机层，有机层位于显示区的中间区域的部分的厚度，大于有机层位于显示区的边缘区域的部分的厚度。本申请通过对封装层中的有机层进行设计，使有机层位于显示区的中间区域的部分的厚度，大于有机层位于显示区的边缘区域的部分的厚度，则无需光取出层，通过有机层实现出光效率的提升，减小了OLED显示面板的厚度，同时，通过改变有机层的厚度，使得位于显示区的中间区域的光程与位于显示区的边缘区域的光程的差距缩小，则缓解甚至消除了OLED显示器件的不同方向的光线的光程不同的问题，减小甚至消除了不同方向的色差，避免出现亮度不均的问题。
 附图说明
下面结合附图，通过对本申请的具体实施方式详细描述，将使本申请的技术方案及其它有益效果显而易见。
图1为本申请实施例提供的OLED显示面板的第一种示意图。
图2为本申请实施例提供的OLED显示面板的第二种示意图。
图3为本申请实施例提供的OLED显示面板的第三种示意图。
图4为本申请实施例提供的发光区的第一种示意图。
图5为本申请实施例提供的发光区的第二种示意图。
图6为本申请实施例提供的OLED显示装置的示意图。
 本发明的实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述。显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
本申请实施例针对现有OLED显示器件存在不同方向的光线的光程不同所导致的OLED显示器件的亮度不均的技术问题，提供一种OLED显示面板和OLED显示装置，用以缓解该技术问题。
如图1、图2所示，本申请实施例提供一种OLED显示面板，该OLED显示面板1包括：
衬底11；
驱动电路层12，设置于所述衬底11一侧；
发光功能层13，设置于所述驱动电路层12远离所述衬底11的一侧；
封装层14，设置于所述发光功能层13远离所述驱动电路层12的一侧；
其中，所述OLED显示面板1包括显示区151和非显示区152，所述封装层14包括有机层142，所述有机层142位于所述显示区151的中间区域的部分的厚度L1，大于所述有机层142位于所述显示区151的边缘区域的部分的厚度L2。
本申请实施例提供一种OLED显示面板，该OLED显示面板通过对封装层中的有机层进行设计，使有机层位于显示区的中间区域的部分的厚度，大于有机层位于显示区的边缘区域的部分的厚度，则无需光取出层，通过有机层实现出光效率的提升，减小了OLED显示面板的厚度，同时，通过改变有机层的厚度，使得位于显示区的中间区域的光程与位于显示区的边缘区域的光程的差距缩小，则缓解甚至消除了OLED显示器件的不同方向的光线的光程不同的问题，减小甚至消除了不同方向的色差，避免出现亮度不均的问题。
需要说明的是，在本申请实施例中，中间区域和边缘区域指代一般定义上的区域划分，例如显示区可以从靠近一侧非显示区至靠近另一侧非显示区依次分割为三个区域，则位于两个靠近非显示区的区域之间的区域为中间区域，而靠近非显示区的两个区域为边缘区域，至于中间区域和边缘区域是否等分，即中间区域与每一个边缘区域的面积是否相等，在此不进行限定，例如显示区划分为从左至右的三个区域，中间区域可以与两侧的边缘区域的面积相等，但中间区域的面积也可以大于两侧的边缘区域的面积。
具体的，所述有机层的厚度从所述显示区的中间区域向所述非显示区递减。即通过使有机层的厚度从中间区域向非显示区递减，使得从大视角（在经过多个膜层后光线可能从非显示区边缘射出，所以大视角包括显示区的边缘区域也包括非显示区）发出的光线的光程与中间区域的光线的光程的差距缩小，则可以避免不同方向的光线的光程差导致出现亮度不均的问题。
具体的，在确定显示区的边缘区域时，这对大尺寸显示器件，主要由左右两侧的光线的光程与中间区域的光程的差距过大，导致显示器件出现亮度不均、色差等问题，因此，可以将有机层设计为一个从中间区域向两侧延伸的弧面，从而缩小不同方向的光线的光程差，减小色差；而对于小尺寸的显示器件，四周的光线的光程与中间区域的光程的光程差均会导致色差明显的问题，因此，可以将有机层设计为一个从中间区域向四周延伸的球面，使OLED显示器件的四周的光线的光程与OLED显示器件的中间区域的光线的光程的差距缩小，缓解亮度不均、减小色差。
具体的，对于非显示区的设计，可以使非显示区为一个与显示区相同弧度的弧面，也可以使非显示区为平面，但使得非显示区的厚度小于显示区的厚度，从而缩小不同方向的光线的光程层。
在一种实施例中，如图1所示，所述有机层142从所述显示区151的中间区域向所述显示区151的边缘区域的厚度递减。即可以使得显示面板的显示区呈现为弧面，使有机层的厚度从中间区域向边缘递减，从而改善显示器件的色差和亮度不均。
针对整面设计有机层仍然会导致单个像素或者单个子像素的不同方向的光线的光程差不同的问题。在一种实施例中，如图3所示，所述显示区151包括发光区21和非发光区22，所述有机层142位于所述发光区21的部分的厚度L5，大于所述有机层142位于所述非发光区22的部分的厚度L3。通过对发光区和非发光区进行设计，使得有机层位于发光区的厚度大于位于非发光区的厚度，则可以缩小每个发光区的不同方向的光线的光程差，避免各个发光区的不同方向的光线的光程差导致各个发光像素或者发光子像素出现色偏，从而改善显示器件的色差和亮度不均的技术问题。
具体的，上述实施例以发光区和非发光区的有机层的设置方式进行了详细说明。而发光区一般指代子像素的发光区域，因此此处未涉及到像素层面的设置方式，但本申请实施例不限于此，对于像素层面的设置方式也可以采用上述设置。例如，使对应像素位置的有机层的厚度大于位于像素之间的位置的有机层的厚度，在此不再赘述。
针对仅对发光区和非发光区的有机层进行设计仍然存在单个子像素的不同方向的光线的光程差不同的问题。在一种实施例中，如图2所示，所述有机层142位于所述发光区21的中间区域的部分的厚度L5，大于所述有机层142位于所述发光区21的边缘区域的部分的厚度L4。通过使得发光区的中间区域的有机层的厚度大于发光区的边缘区域的有机层的厚度，使得位于发光区的中间区域的光线的光程与位于发光区的边缘区域的光程的差距缩小，则从单个子像素发出的光线在各个角度的亮度和色彩均是相同的，从而避免出现亮度不均或者色差的问题。
需要说明的是，本实施例中的中间区域和边缘区域的含义仍然可以采用上述实施例中所作出的解释中的具体指代意义，在此不再赘述。
在一种实施例中，如图3所示，所述OLED显示面板1包括红色子像素231、绿色子像素232和蓝色子像素233，所述红色子像素231对应位置211的有机层142的形状与所述绿色子像素232对应位置212的有机层142的形状相同，所述绿色子像素232对应位置212的有机层142的形状与所述蓝色子像素233对应位置213的有机层142的形状相同。在设置有机层时，针对各个发光子像素进行相应的设计，使得每个发光子像素的有机层均能呈现为从中间向两侧的厚度减小的形状，从而改善每个发光子像素的亮度不均和色差问题。
需要说明的是，为了便于说明，在图3中以红色发光器件、绿色发光器件和蓝色发光器件分别指代红色子像素、绿色子像素和蓝色子像素，但实际中红色子像素指能够使红色发光器件发光的所有膜层，绿色子像素指能够使绿色发光器件发光的所有膜层，蓝色子像素指能够使蓝色发光器件发光的所有膜层。
上述实施例以不同颜色的子像素的形状相同为例进行了详细说明。但在实际设计中，考虑到部分显示器件为了提高发光寿命，提高分辨率，会将不同颜色的发光子像素设计为不同的形状和不同的厚度，因此，可以根据不同颜色的发光子像素相应的设计有机层。
在一种实施例中，所述OLED显示面板包括红色子像素、绿色子像素和蓝色子像素，所述红色子像素对应位置的有机层的形状与所述绿色子像素对应位置的有机层的形状不同，所述绿色子像素对应位置的有机层的形状与所述蓝色子像素对应位置的有机层的形状不同。即针对不同形状、不同尺寸的子像素，可以对其进行相应的设计，从而相应的改善不同子像素的亮度不均和色差。
在一种实施例中，如图2所示，所述封装层14还包括第一无机层141和第二无机层143，所述第一无机层141设置于所述有机层142与所述发光功能层13之间，所述第二无机层143设置于所述有机层142远离所述第一无机层141的一侧，所述第一无机层141的各个区域的厚度相等，所述第二无机层143的各个区域的厚度相等。在设置封装层时，对于第一无机层和第二无机层的设置方式，不改变第一无机层和第二无机层的工艺，分别在发光功能层和有机层上形成第一无机层和第二无机层，降低工艺难度，因此，第二无机层会在有机层上呈现为曲面形状，且通过该结构缩小不同方向的光线的光程差，避免呈现亮度不均和色差的问题。
具体的，所述有机层与所述第一无机层接触的表面为平面，所述有机层在所述第二无机层接触的一侧，位于所述发光区的中间区域的有机层的高度，大于位于所述发光区的边缘区域的高度。即在设置第一无机层时，使第一无机层保持为平面设置，而有机层通过远离第一无机层的一侧设置为不同高度，从而实现对有机层的不同区域的厚度的设置。
上述实施例以第一无机层和有机层接触的表面为平面进行了详细说明，但本申请实施例不限于此，例如，第一无机层与有机层接触的表面为曲面，通过第一无机层形成凹槽，有机层形成凸起，同时，有机层在远离第一无机层的一侧形成为曲面，实现有机层在发光区的中间区域的厚度大于在发光区的边缘区域的厚度，且大于位于非发光区的厚度。
针对光线在从发光区射出时，光线的光程从发光区的中间区域至发光区的边缘区域依次减小，则可以通过将有机层设置为曲面，使得有机层的厚度依次减小，从而改善不同方向的光线的光程差所导致的亮度不均和色差的问题。
在一种实施例中，如图3、图4所示，所述边缘区域包括位于所述中间区域215两侧的第一边缘区域214和第二边缘区域216，所述有机层142的厚度从所述中间区域215向所述第一边缘区域214递减，所述有机层142的厚度从所述中间区域215向所述第二边缘区域216递减。针对亮度不均和色差主要由两侧的光线与中间的光线的光程的不同导致，通过将有机层的厚度从中间区域向两侧的边缘区域递减，使得光线的光程从发光区的中间区域向两侧的边缘区域递增，则可以缩小不同的方向的光线的光程差，避免出现亮度不均和色差的问题。
在一种实施例中，如图3、图5所示，所述边缘区域包括位于所述中间区域221四周的第三边缘区域217、第四边缘区域218、第五边缘区域219和第六边缘区域220，所述有机层142的厚度从所述中间区域221向所述第三边缘区域217递减，所述有机层142的厚度从所述中间区域221向所述第四边缘区域218递减，所述有机层142的厚度从所述中间区域221向所述第五边缘区域219递减，所述有机层142的厚度从所述中间区域221向所述第六边缘区域220递减。针对亮度不均和色差由发光区的四周的边缘区域的光线与中间区域的光线的光程的不同导致，通过将有机层的厚度从中间区域向四周的边缘区域递减，使得光线的光程从发光区的中间区域向四周的边缘区域递增，则可以缩小不同的方向的光线的光程差，避免出现亮度不均和色差的问题。
在一种实施例中，所述第一无机层的折射率小于所述有机层的折射率，所述有机层的折射率小于所述第二无机层的折射率。通过使得第一无机层至第二无机层的折射率依次增大，从而增大光线的透过率。
在一种实施例中，如图2所示，所述OLED显示面板1还包括保护膜16，所述保护膜16设置于所述第二无机层143远离所述有机层142的一侧。通过设置保护膜，对封装层进行保护，并阻挡水氧的入侵。
在一种实施例中，所述OLED显示面板还包括保护膜，所述保护膜设置于所述第二无机层远离所述有机层的一侧，且所述保护膜的各个区域的厚度相等。在设置保护膜时，可以使保护膜的厚度保持一致，但由于在产品成型时，会通过保护玻璃覆盖，能够消除OLED显示面板的不平坦，因此，可以将OLED显示面板的保护层的表面设置为不平坦。
针对封装层中的有机层的不同区域的厚度不同会导致OLED显示器件不平坦的问题。在一种实施例中，所述OLED显示面板还包括保护膜，所述保护膜设置于所述第二无机层远离所述有机层的一侧，所述保护层位于所述发光区的中间区域的部分的厚度，小于所述保护层位于所述发光区的边缘区域的部分的厚度，且所述保护层位于所述发光区的边缘区域的部分的厚度，小于所述保护层位于所述非发光区的部分的厚度。通过将保护层的厚度依照有机层的设置进行相应的设计，将保护层位于发光区的中间区域的部分的厚度减小，或者将保护层位于发光区的边缘区域的部分的厚度增大，使得保护层的不同区域的厚度与有机层的对应区域的厚度具有相反的设置方式，从而使得在设置保护膜后，OLED显示面板能够保持平坦。
在一种实施例中，所述保护膜远离所述第二无机层的一侧的表面为平面。即在设置保护膜时，在第二无机层上形成保护层，通过将保护膜远离第二无机层的一侧设置为平面，使得在形成保护膜后，OLED显示面板为平坦表面。
针对不设置保护膜时，第二无机层的厚度一致会导致OLED显示面板不平坦的问题。在一种实施例中，所述封装层还包括第一无机层和第二无机层，所述第一无机层设置于所述有机层与所述发光功能层之间，所述第二无机层设置于所述有机层远离所述第一无机层的一侧，所述第一无机层的各个区域的厚度相等，所述第二无机层位于所述发光区的中间区域的部分的厚度，小于所述第二无机层位于所述发光的边缘区域的部分的厚度，且所述第二无机层位于所述发光区的边缘区域的部分的厚度，小于所述第二无机层位于所述非发光区的部分的厚度。通过将第二无机层位于发光区的中间区域的部分的厚度减小，或者将第二无机层位于发光区的边缘区域的部分的厚度增大，使得第二无机层能够降低弧度甚至消除弧度，从而使得第二无机层保持平坦，使得OLED显示面板呈现平坦化。
具体的，可以使第二无机层远离所述有机层的一侧的表面为平面，通过将第二无机层设置为平面，从而使OLED显示面板保持平整。
本申请实施例提供的OLED显示面板中，针对现有设置光取出层的OLED显示面板无法解决不同方向的光线的光程差所导致的亮度不均和色差的问题，通过对有机层进行设计，使有机层取代光取出层，同时还可以解决不同方向的光线的光程差所导致的亮度不均和色差的问题。而相较于将光取出层的不同区域的厚度设置为不同以解决不同方向的光线的光程差所导致的亮度不均和色差的OLED显示面板，由于本申请是对有机层进行设计，减小了OLED显示面板的厚度。
上述实施例以封装层结构为第一无机层、有机层和第二无机层为例进行了详细说明。但本申请实施例不限于此，例如一些OLED显示面板中的封装层结构为无机层/有机层/无机层/有机层/无机层多层层叠的结构，则可以对多层有机层进行相应的设计，相应的对无机层进行设计，具体以缩小不同方向的光线的光程差为准进行设计，在此不再赘述。
在一种实施例中，有机层的透过率大于90%，所述有机层的折射率大于1.7。
在一种实施例中，所述有机层的材料包括丙烯酸树脂和环氧树脂中的至少一种。
在一种实施例中，为了实现本申请中有机层的设计，可以通过涂布或者喷墨打印的方式形成该有机层，具体可以通过涂布或者喷墨打印成膜后，通过流平静置或者加热或者紫外光照射后预固化，使得预固化后膜层的年度增加，然后进行压印工艺，实现有机层的光学弧面设计，最终通过热固化或者紫外光固化形成有机层。
具体的，对树脂的浓度或者添加剂进行调节，使得在对树脂进行涂布或者喷墨打印时，树脂呈现低粘度状态，具体可以使粘度小于50厘帕.秒，在对树脂进行预固化后进行压印工艺前，年度上升至较高年度，具体可以使粘度为40000至200000厘帕.秒，从而使得在涂布或者喷墨打印时较易取出树脂，在预固化后，增大粘度，避免树脂出现移位或者脱落，提高成膜效果。
具体的，在形成有机层时，为了降低工艺难度，可以使得弧度延伸至非发光区或者非显示区；为了提高色差和亮度不均的改善效果，可以在各个子像素设计对应的弧度。
在一种实施例中，如图2所示，所述驱动电路层12包括有源层121、第一栅极绝缘层122、第一金属层123、第二栅极绝缘层124、第二金属层125、层间绝缘层126、源漏极层127和平坦化层128。
在一种实施例中，如图2所示，所述发光功能层13包括像素电极层131、像素定义层132、发光材料层133和公共电极层134。
同时，本申请实施例提供一种OLED显示装置，如图2、图6所示，该OLED显示装置包括OLED显示面板和电子元件31，所述OLED显示面板包括：
衬底11；
驱动电路层12，设置于所述衬底11一侧；
发光功能层13，设置于所述驱动电路层12远离所述衬底11的一侧；
封装层14，设置于所述发光功能层13远离所述驱动电路层12的一侧；
其中，所述OLED显示面板1包括显示区151和非显示区152，所述封装层14包括有机层142，所述有机层142位于所述显示区151的中间区域的部分的厚度L1，大于所述有机层142位于所述显示区151的边缘区域的部分的厚度L2。
本申请实施例提供一种OLED显示装置，该OLED显示装置包括OLED显示面板和电子元件，该OLED显示面板通过对封装层中的有机层进行设计，使有机层位于显示区的中间区域的部分的厚度，大于有机层位于显示区的边缘区域的部分的厚度，则无需光取出层，通过有机层实现出光效率的提升，减小了OLED显示面板的厚度，同时，通过改变有机层的厚度，使得位于显示区的中间区域的光程与位于显示区的边缘区域的光程的差距缩小，则缓解甚至消除了OLED显示器件的不同方向的光线的光程不同的问题，减小甚至消除了不同方向的色差，避免出现亮度不均的问题。
在一种实施例中，在OLED显示装置中，所述有机层从所述显示区的中间区域向所述显示区的边缘区域的厚度递减。
在一种实施例中，在OLED显示装置中，所述显示区包括发光区和非发光区，所述有机层位于所述发光区的部分的厚度，大于所述有机层位于所述非发光区的部分的厚度。
在一种实施例中，在OLED显示装置中，所述有机层位于所述发光区的中间区域的部分的厚度，大于所述有机层位于所述发光区的边缘区域的部分的厚度。
在一种实施例中，在OLED显示装置中，所述OLED显示面板包括红色子像素、绿色子像素和蓝色子像素，所述红色子像素对应位置的有机层的形状与所述绿色子像素对应位置的有机层的形状不同，所述绿色子像素对应位置的有机层的形状与所述蓝色子像素对应位置的有机层的形状不同。
在一种实施例中，在OLED显示装置中，所述封装层还包括第一无机层和第二无机层，所述第一无机层设置于所述有机层与所述发光功能层之间，所述第二无机层设置于所述有机层远离所述第一无机层的一侧，所述第一无机层的各个区域的厚度相等，所述第二无机层的各个区域的厚度相等。
在一种实施例中，在OLED显示装置中，所述有机层与所述第一无机层接触的表面为平面，所述有机层在与所述第二无机层接触的一侧，位于所述发光区的中间区域的有机层的高度，大于位于所述发光区的边缘区域的高度。
在一种实施例中，在OLED显示装置中，所述边缘区域包括位于所述中间区域两侧的第一边缘区域和第二边缘区域，所述有机层的厚度从所述中间区域向所述第一边缘区域递减，所述有机层的厚度从所述中间区域向所述第二边缘区域递减。
在一种实施例中，在OLED显示装置中，所述边缘区域包括位于所述中间区域四周的第三边缘区域、第四边缘区域、第五边缘区域和第六边缘区域，所述有机层的厚度从所述中间区域向所述第三边缘区域递减，所述有机层的厚度从所述中间区域向所述第四边缘区域递减，所述有机层的厚度从所述中间区域向所述第五边缘区域递减，所述有机层的厚度从所述中间区域向所述第六边缘区域递减。
根据以上实施例可知：
本申请实施例提供一种OLED显示面板和OLED显示装置，该OLED显示面板包括衬底、驱动电路层、发光功能层和封装层，驱动电路层设置于衬底一侧，发光功能层设置于驱动电路层远离衬底的一侧，封装层设置于发光功能层远离驱动电路层的一侧，其中，OLED显示面板包括显示区和非显示区，封装层包括有机层，有机层位于显示区的中间区域的部分的厚度，大于有机层位于显示区的边缘区域的部分的厚度。本申请通过对封装层中的有机层进行设计，使有机层位于显示区的中间区域的部分的厚度，大于有机层位于显示区的边缘区域的部分的厚度，则无需光取出层，通过有机层实现出光效率的提升，减小了OLED显示面板的厚度，同时，通过改变有机层的厚度，使得位于显示区的中间区域的光程与位于显示区的边缘区域的光程的差距缩小，则缓解甚至消除了OLED显示器件的不同方向的光线的光程不同的问题，减小甚至消除了不同方向的色差，避免出现亮度不均的问题。
在上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述的部分，可以参见其他实施例的相关描述。
以上对本申请实施例所提供的一种OLED显示面板和OLED显示装置进行了详细介绍，本文中应用了具体个例对本申请的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本申请的技术方案及其核心思想；本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例的技术方案的范围。

Claims (20)

  1. 一种OLED显示面板，其包括：
    衬底；
    驱动电路层，设置于所述衬底一侧；
    发光功能层，设置于所述驱动电路层远离所述衬底的一侧；
    封装层，设置于所述发光功能层远离所述驱动电路层的一侧；
    其中，所述OLED显示面板包括显示区和非显示区，所述封装层包括有机层，所述有机层位于所述显示区的中间区域的部分的厚度，大于所述有机层位于所述显示区的边缘区域的部分的厚度。
  2. 如权利要求1所述的OLED显示面板，其中，所述有机层从所述显示区的中间区域向所述显示区的边缘区域的厚度递减。
  3. 如权利要求1所述的OLED显示面板，其中，所述显示区包括发光区和非发光区，所述有机层位于所述发光区的部分的厚度，大于所述有机层位于所述非发光区的部分的厚度。
  4. 如权利要求3所述的OLED显示面板，其中，所述有机层位于所述发光区的中间区域的部分的厚度，大于所述有机层位于所述发光区的边缘区域的部分的厚度。
  5. 如权利要求4所述的OLED显示面板，其中，所述OLED显示面板包括红色子像素、绿色子像素和蓝色子像素，所述红色子像素对应位置的有机层的形状与所述绿色子像素对应位置的有机层的形状不同，所述绿色子像素对应位置的有机层的形状与所述蓝色子像素对应位置的有机层的形状不同。
  6. 如权利要求4所述的OLED显示面板，其中，所述封装层还包括第一无机层和第二无机层，所述第一无机层设置于所述有机层与所述发光功能层之间，所述第二无机层设置于所述有机层远离所述第一无机层的一侧，所述第一无机层的各个区域的厚度相等，所述第二无机层的各个区域的厚度相等。
  7. 如权利要求6所述的OLED显示面板，其中，所述有机层与所述第一无机层接触的表面为平面，所述有机层在与所述第二无机层接触的一侧，位于所述发光区的中间区域的有机层的高度，大于位于所述发光区的边缘区域的高度。
  8. 如权利要求7所述的OLED显示面板，其中，所述边缘区域包括位于所述中间区域两侧的第一边缘区域和第二边缘区域，所述有机层的厚度从所述中间区域向所述第一边缘区域递减，所述有机层的厚度从所述中间区域向所述第二边缘区域递减。
  9. 如权利要求7所述的OLED显示面板，其中，所述边缘区域包括位于所述中间区域四周的第三边缘区域、第四边缘区域、第五边缘区域和第六边缘区域，所述有机层的厚度从所述中间区域向所述第三边缘区域递减，所述有机层的厚度从所述中间区域向所述第四边缘区域递减，所述有机层的厚度从所述中间区域向所述第五边缘区域递减，所述有机层的厚度从所述中间区域向所述第六边缘区域递减。
  10. 如权利要求6所述的OLED显示面板，其中，所述第一无机层的折射率小于所述有机层的折射率，所述有机层的折射率小于所述第二无机层的折射率。
  11. 如权利要求10所述的OLED显示面板，其中，所述OLED显示面板还包括保护膜，所述保护膜设置于所述第二无机层远离所述有机层的一侧，且所述保护膜的各个区域的厚度相等。
  12. 如权利要求4所述的OLED显示面板，其中，所述封装层还包括第一无机层和第二无机层，所述第一无机层设置于所述有机层与所述发光功能层之间，所述第二无机层设置于所述有机层远离所述第一无机层的一侧，所述第一无机层的各个区域的厚度相等，所述第二无机层位于所述发光区的中间区域的部分的厚度，小于所述第二无机层位于所述发光区的边缘区域的部分的厚度，且所述第二无机层位于所述发光区的边缘区域的部分的厚度，小于所述第二无机层位于所述非发光区的部分的厚度。
  13. 一种OLED显示装置，其包括OLED显示面板和电子元件，所述OLED显示面板包括：
    衬底；
    驱动电路层，设置于所述衬底一侧；
    发光功能层，设置于所述驱动电路层远离所述衬底的一侧；
    封装层，设置于所述发光功能层远离所述驱动电路层的一侧；
    其中，所述OLED显示面板包括显示区和非显示区，所述封装层包括有机层，所述有机层位于所述显示区的中间区域的部分的厚度，大于所述有机层位于所述显示区的边缘区域的部分的厚度。
  14. 如权利要求13所述的OLED显示装置，其中，所述有机层从所述显示区的中间区域向所述显示区的边缘区域的厚度递减。
  15. 如权利要求13所述的OLED显示装置，其中，所述显示区包括发光区和非发光区，所述有机层位于所述发光区的部分的厚度，大于所述有机层位于所述非发光区的部分的厚度。
  16. 如权利要求15所述的OLED显示装置，其中，所述有机层位于所述发光区的中间区域的部分的厚度，大于所述有机层位于所述发光区的边缘区域的部分的厚度。
  17. 如权利要求16所述的OLED显示装置，其中，所述OLED显示面板包括红色子像素、绿色子像素和蓝色子像素，所述红色子像素对应位置的有机层的形状与所述绿色子像素对应位置的有机层的形状不同，所述绿色子像素对应位置的有机层的形状与所述蓝色子像素对应位置的有机层的形状不同。
  18. 如权利要求16所述的OLED显示装置，其中，所述封装层还包括第一无机层和第二无机层，所述第一无机层设置于所述有机层与所述发光功能层之间，所述第二无机层设置于所述有机层远离所述第一无机层的一侧，所述第一无机层的各个区域的厚度相等，所述第二无机层的各个区域的厚度相等。
  19. 如权利要求18所述的OLED显示装置，其中，所述有机层与所述第一无机层接触的表面为平面，所述有机层在与所述第二无机层接触的一侧，位于所述发光区的中间区域的有机层的高度，大于位于所述发光区的边缘区域的高度。
  20. 如权利要求19所述的OLED显示装置，其中，所述边缘区域包括位于所述中间区域两侧的第一边缘区域和第二边缘区域，所述有机层的厚度从所述中间区域向所述第一边缘区域递减，所述有机层的厚度从所述中间区域向所述第二边缘区域递减。
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