WO2022236858A1 - 显示面板及显示装置 - Google Patents

显示面板及显示装置 Download PDF

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Publication number
WO2022236858A1
WO2022236858A1 PCT/CN2021/094652 CN2021094652W WO2022236858A1 WO 2022236858 A1 WO2022236858 A1 WO 2022236858A1 CN 2021094652 W CN2021094652 W CN 2021094652W WO 2022236858 A1 WO2022236858 A1 WO 2022236858A1
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WO
WIPO (PCT)
Prior art keywords
light
enhancing
pixel defining
defining structure
emitting
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PCT/CN2021/094652
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English (en)
French (fr)
Inventor
王芳
Original Assignee
武汉华星光电技术有限公司
武汉华星光电半导体显示技术有限公司
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Application filed by 武汉华星光电技术有限公司, 武汉华星光电半导体显示技术有限公司 filed Critical 武汉华星光电技术有限公司
Priority to US17/419,348 priority Critical patent/US20220367579A1/en
Publication of WO2022236858A1 publication Critical patent/WO2022236858A1/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
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H10K59/122—Pixel-defining structures or layers, e.g. banks

Definitions

  • the present application relates to the field of display technology, in particular to a display panel and a display device.
  • Organic light emitting diodes have been favored by the market in recent years because they can be fabricated on flexible substrates.
  • the development of OLED can be said to have entered the second explosive stage.
  • the phosphorescence system used in the light-emitting parts of the red and green sub-pixels Its theoretical internal quantum efficiency can reach 100%; the light-emitting part of the blue sub-pixel still adopts the traditional blue fluorescent structure, and the theoretical internal quantum efficiency is only 25% because the fluorescent material can only use 25% of singlet excitons. %, since only 25% of the singlet excitons can be utilized, the low efficiency and high power consumption of the blue fluorescent structure have been the bottleneck problems hindering the development of OLED displays.
  • Embodiments of the present invention provide a display panel and a display device, which can solve the problems of low luminous efficiency and high power consumption of the current display panel.
  • An embodiment of the present application provides a display panel, including:
  • a pixel definition layer located on one side of the array substrate, the pixel definition layer includes a plurality of pixel definition structures
  • a light-emitting functional layer including a plurality of light-emitting parts arranged in the pixel defining structure, the plurality of light-emitting parts including a first light-emitting part, a second light-emitting part and a third light-emitting part, the light emitted by the first light-emitting part
  • the quantum efficiency is lower than the quantum efficiency of the light emitted by the second light emitting part and the third light emitting part;
  • the plurality of pixel defining structures include a first pixel defining structure, and the first light-emitting part is disposed in the first pixel defining structure; the first pixel defining structure includes a light enhancing material, and the first pixel defining structure Under the excitation of the light emitted by the light emitting part, the light enhancing material can emit light having the same color as the light emitted by the first light emitting part.
  • the light enhancing material is nanocrystalline particles.
  • the first pixel defining structure includes:
  • a first light intensifying part disposed adjacent to the first light emitting part
  • a first light-transmitting part located on a side of the first light-intensifying part away from the first light-emitting part;
  • the first light enhancing part includes the light enhancing material.
  • both the first light enhancing part and the first light transmitting part include a transparent substrate
  • the light enhancing material is doped in the transparent base material of the first light enhancing part.
  • the first light enhancement part further includes microstructures.
  • the pixel defining structure further includes a second pixel defining structure and a third pixel defining structure respectively corresponding to the second light emitting part and the third light emitting part, and the second pixel defining structure includes A second light enhancement part adjacent to the second light emitting part, the third pixel defining structure includes a third light enhancement part adjacent to the third light emitting part, the second light enhancement part and the third light enhancement part Light enhancing materials are arranged in the reinforcing parts;
  • the particle diameter of the light enhancing material in the second light enhancing part and the third light enhancing part is larger than the particle diameter of the light enhancing material in the first light enhancing part.
  • the light emitting colors of the first light emitting part, the second light emitting part and the third light emitting part are blue, green and red respectively.
  • the particle size of the light enhancing material in the first light enhancing part, the second light enhancing part and the third light enhancing part increases sequentially.
  • the particle size interval of the light enhancing material in the third light enhancing part is larger than the particle size range of the light enhancing material in the first light enhancing part and the second light enhancing part.
  • the embodiment of the present application also provides a display device, which includes a display panel, and the display panel includes:
  • a pixel definition layer located on one side of the array substrate, the pixel definition layer includes a plurality of pixel definition structures
  • a light-emitting functional layer including a plurality of light-emitting parts arranged in the pixel defining structure, the plurality of light-emitting parts including a first light-emitting part, a second light-emitting part and a third light-emitting part, the light emitted by the first light-emitting part
  • the quantum efficiency is lower than the quantum efficiency of the light emitted by the second light emitting part and the third light emitting part;
  • the plurality of pixel defining structures include a first pixel defining structure, and the first light-emitting part is disposed in the first pixel defining structure; the first pixel defining structure includes a light enhancing material, and the first pixel defining structure Under the excitation of the light emitted by the light emitting part, the light enhancing material can emit light having the same color as the light emitted by the first light emitting part.
  • the light enhancing material is nanocrystalline particles.
  • the first pixel defining structure includes:
  • a first light intensifying part disposed adjacent to the first light emitting part
  • a first light-transmitting part located on a side of the first light-intensifying part away from the first light-emitting part;
  • the first light enhancing part includes the light enhancing material.
  • both the first light enhancing part and the first light transmitting part include a transparent substrate
  • the light enhancing material is doped in the transparent base material of the first light enhancing part.
  • the first light enhancement part further includes microstructures.
  • the pixel defining structure further includes a second pixel defining structure and a third pixel defining structure respectively corresponding to the second light emitting part and the third light emitting part, and the second pixel defining structure includes A second light enhancement part adjacent to the second light emitting part, the third pixel defining structure includes a third light enhancement part adjacent to the third light emitting part, the second light enhancement part and the third light enhancement part Light enhancing materials are arranged in the reinforcing parts;
  • the particle diameter of the light enhancing material in the second light enhancing part and the third light enhancing part is larger than the particle diameter of the light enhancing material in the first light enhancing part.
  • the light emitting colors of the first light emitting part, the second light emitting part and the third light emitting part are blue, green and red respectively.
  • the particle size of the light enhancing material in the first light enhancing part, the second light enhancing part and the third light enhancing part increases sequentially.
  • the particle size interval of the light enhancing material in the third light enhancing part is larger than the particle size range of the light enhancing material in the first light enhancing part and the second light enhancing part.
  • the light enhancing material in the pixel definition structure corresponding to at least part of the light emitting part, can emit light of the same color as the light emitted by the light emitting part when excited by the light emitted by the light emitting part. light, thereby reducing the absorption of light by at least part of the pixel defining layer, improving the light extraction efficiency of the display panel, and reducing the power consumption of the display panel.
  • FIG. 1 is a schematic diagram of a display panel shown in Embodiment 1 of the present application.
  • FIG. 2 is a schematic plan view of a microstructure shown in Embodiment 1 of the present application.
  • FIG. 3 is a schematic plan view of another microstructure shown in Embodiment 1 of the present application.
  • FIG. 4 is a schematic diagram of a display panel shown in Embodiment 2 of the present application.
  • orientation words such as “up” and “down” usually refer to up and down in the actual use or working state of the device, specifically the direction of the drawing in the drawings ; while “inside” and “outside” refer to the outline of the device.
  • Display panels generally include sub-pixels of multiple colors, such as red sub-pixels, green sub-pixels, blue sub-pixels, etc.
  • the light-emitting parts of different color sub-pixels are based on light-emitting systems, materials, structures, etc. There may be differences in quantum efficiency, that is, the photoelectric conversion ability of some light emitting parts is strong, and the photoelectric conversion ability of some light emitting parts is weak, which in turn causes the problems of low light extraction efficiency and high power consumption of the display panel.
  • the present application provides a display panel.
  • a light-enhancing material is arranged in at least part of the pixel-defining structure corresponding to the light-emitting part, and the light-enhancing material can emit light similar to The light emitting part emits light with the same light color, thereby reducing the absorption of light by at least part of the pixel defining layer, improving the light extraction efficiency of the display panel, and reducing the power consumption of the display panel.
  • the display panel 100 includes an array substrate 10 and a plurality of sub-pixels (sub-pixels) disposed on the array substrate 10, such as a plurality of first sub-pixels, a plurality of second sub-pixels and A plurality of third sub-pixels, each first sub-pixel, each second sub-pixel and each third sub-pixel are respectively provided with a first light emitting part 41, a second light emitting part 42 and a third light emitting part emitting light of different wavelength bands.
  • Light emitting part 43 is disposed on the array substrate 10 and a plurality of sub-pixels (sub-pixels) disposed on the array substrate 10, such as a plurality of first sub-pixels, a plurality of second sub-pixels and A plurality of third sub-pixels, each first sub-pixel, each second sub-pixel and each third sub-pixel are respectively provided with a first light emitting part 41, a second light emitting part 42 and a third light emitting part emitting light of different wavelength bands.
  • Light emitting part 43
  • the array substrate 10 includes, for example, a base substrate, a thin-film transistor (Thin-film transistor) disposed on the base substrate transistor, TFT) layer.
  • the array substrate 10 may also include film layers such as a planarization layer and a passivation layer, which are not limited herein.
  • the substrate substrate can be a rigid substrate or a flexible substrate, for example, made of such as glass material, metal material or including polyethylene terephthalate (PET), polyethylene naphthalate (PEN) or polyimide (PI) and other plastic materials suitable for forming.
  • PET polyethylene terephthalate
  • PEN polyethylene naphthalate
  • PI polyimide
  • a layer structure such as a buffer layer may be formed on the base substrate.
  • the buffer layer may be formed on the entire surface of the base substrate, or may be formed by patterning.
  • the buffer layer may include PET, PEN, polyacrylate and/or polyimide and other suitable materials, and form a layered structure in the form of single-layer or multi-layer stacking.
  • the buffer layer may also be formed of silicon oxide or silicon nitride, or may be a composite layer including an organic material and/or an inorganic material.
  • a thin film transistor in the thin film transistor layer may include a semiconductor layer, a gate electrode, a source electrode, and a drain electrode.
  • the semiconductor layer may be formed of an amorphous silicon layer, a metal oxide, or a polysilicon layer, or may be formed of an organic semiconductor material.
  • the semiconductor layer includes a channel region and source and drain regions doped with dopants.
  • an electrode via hole (not shown) may be formed in the planarization layer to expose the drain electrode of the TFT.
  • each sub-pixel may include an anode, a cathode, a light emitting portion disposed between the anode and the cathode, and a pixel defining structure surrounding the light emitting portion.
  • the sub-pixel may be at least one of a blue sub-pixel, a green sub-pixel and a red sub-pixel.
  • the first sub-pixel is a blue sub-pixel
  • the second sub-pixel is a green sub-pixel
  • the third sub-pixel is a red sub-pixel; that is, the first light-emitting part 41 and the second light-emitting part 42 and the third light emitting part 43 are blue, green and red respectively.
  • the anode in the sub-pixel is formed by, for example, the first electrode layer 20 disposed on the array substrate 10 , and the first electrode layer 20 is electrically connected to the drain electrode of the TFT through the electrode through hole in the planar layer.
  • a pixel defining layer 30 is further disposed on the array substrate 10, the pixel defining layer 30 is specifically disposed on the first electrode layer 20, and includes a plurality of pixel defining structures, and the plurality of pixel defining structures include a first pixel defining structure 31 .
  • the second pixel defining structure 32 and the third pixel defining structure 33 are formed from a single material layer or a composite material layer of a suitable organic material such as polyacrylate and polyimide.
  • the pixel-defining structure may include a transparent substrate formed of polyimide, and the light transmittance of the transparent substrate is greater than 0 and less than 100%.
  • the array substrate 10 is further provided with a light emitting functional layer 40, the light emitting functional layer 40 is specifically arranged on the pixel defining layer 30, and the light emitting functional layer 40 includes a plurality of light emitting parts correspondingly arranged in the plurality of pixel defining structures , the light emitting part includes the first light emitting part 41, the second light emitting part 42 and the third light emitting part 43, the first light emitting part 41 is correspondingly arranged in the first pixel defining structure 31, and the second light emitting part 42 is correspondingly arranged in In the second pixel defining structure 32 , the third light emitting portion 43 is correspondingly disposed in the third pixel defining structure 33 .
  • the quantum efficiency of the first light emitting part 41 is lower than the quantum efficiency of the second light emitting part 42 and the third light emitting part 43
  • the quantum efficiency of the second light emitting part 42 and the third light emitting part 43 can be the same or different
  • the The first pixel defining structure 31 includes a light enhancing material, and the light enhancing material is not disposed in the second pixel defining structure 32 and the third pixel defining structure 33 .
  • the light enhancing material can emit light with the same color as the light emitted by the first light emitting part 41, thereby reducing the impact of the first pixel defining structure 31 on the first light emitting part.
  • the absorption of the light emitted by 41 increases the light output of the first sub-pixel, thereby improving the light extraction efficiency of the display panel 100 .
  • the light-enhancing part containing the light-enhancing material can also be provided with only In the first pixel-defining structure and the second pixel-defining structure, or when the quantum efficiency of the first light-emitting portion and the third light-emitting portion is lower than the quantum efficiency of the second light-emitting portion, the light-enhancing portion including the light-enhancing material can also be only It is arranged in the first pixel defining structure and the third pixel defining structure.
  • the light enhancing material is nanocrystalline particles.
  • the nanocrystalline particles match the wavelength band of light emitted by the first light-emitting part 41 in the first sub-pixel (for example, plasmon resonance can be generated between the physical size of the nanocrystalline particles and the wavelength band of the above-mentioned light, and correspondingly different nanoparticles
  • the physical size of the light is different with the wavelength bands of light emitted by different light-emitting parts), so that under the excitation of the light emitted by the first light-emitting part 41, it can emit light of the same color as the light emitted by the first light-emitting part 41 light, thereby reducing the absorption effect of the transparent substrate of the first pixel defining structure 31 on the light emitted by the first light-emitting portion 41 , increasing the light output of the first sub-pixel, and further improving the light extraction efficiency of the display panel 100 .
  • the application does not limit the specific material of the light-enhancing material, and other materials that can emit the same light as the light-emitting color of the light-emitting part under the excitation of the light-emitting part belong to the protection of this application. category.
  • the first pixel defining structure 31 includes: a first light enhancement part 311, which is adjacent to the first light emitting part 41, and the thickness w of the first light enhancement part 311 is greater than 0 ⁇ m and less than or equal to 0.5 ⁇ m;
  • the light-transmitting portion 312 is located on a side of the first light-enhancing portion 311 away from the first light-emitting portion 41 ; wherein, the first light-enhancing portion 311 includes the light-enhancing material.
  • the light-enhancing material is not provided in the first light-transmitting portion 312 , so as to avoid interference light generated when external ambient light irradiates the first light-transmitting portion 312 area of the first pixel defining structure 31 , thereby affecting The display effect of the display panel 100 .
  • the second pixel defining structure 32 includes a second light-transmitting portion 322 adjacent to the second light emitting portion 42;
  • the third pixel defining structure 33 includes a third light-transmitting portion 332 adjacent to the third light-emitting portion 43 .
  • first light enhancing part 311 and the first light transmitting part 312 both include a transparent substrate, such as a polyimide material, wherein the light enhancing material is doped in the first light enhancing part 311 transparent substrate.
  • the second light-transmitting portion 322 of the second pixel-defining structure 32 and the third light-transmitting portion 332 of the third pixel-defining structure 33 both include the transparent substrate, and the transparent substrates located in different regions in the pixel-defining layer material and the light-enhancing material in the transparent base material are integrally molded.
  • the light-enhancing material is arranged in the transparent base material of the first light-enhancing part 311 by doping, so that the first light-enhancing part 311 and the first light-transmitting part 312 form an integrated structure to improve light enhancement.
  • the stability of the material ensures the bonding quality of the film layers of the first light enhancing part 311 and the first light emitting part 41 and avoids peeling off of the film layers.
  • the present application does not limit the combination of the first light enhancement part 311 and the first light transmission part 312.
  • the first light enhancement part 311 is, for example, an independent film formed of the light enhancement material.
  • the independent film layer is coated on the sidewall of the first light-transmitting portion 312 formed of a transparent substrate and close to the first light-emitting portion 41 by means of inkjet printing.
  • the specific process may be: after forming the entire surface of the light-enhancing material coating with a thickness w greater than 0 and less than 0.5 ⁇ m on the transparent substrate, the first light-transmitting layer of the first light-emitting part 41 is etched away by using a yellow light process.
  • the light-enhancing material coating on the area other than the sidewall of the portion 312 is used to avoid interfering with the generation of light and affecting the work function between the anode and the light-emitting portion.
  • the first light enhancing portion 311 includes a microstructure 51 , and the first light enhancing portion 311 forms a patterned microstructure 51 so that the first light enhancing portion 311
  • the effect of improving the light extraction efficiency of a sub-pixel can be effectively controlled, so that the light output of the first sub-pixel is limited, and the display effect of each sub-pixel of the display panel 100 is improved and balanced.
  • the microstructure 51 is, for example, a plurality of light enhancement strips 511 arranged at intervals, and the transparent substrate is filled between each light enhancement strip 511; or the microstructure 51 is a plurality of island-shaped light enhancement units arranged at intervals. 512 , the transparent substrate is filled between adjacent light enhancement units 512 .
  • the cathode in the sub-pixel is, for example, formed by a second electrode layer (not shown) disposed on the array substrate 10, the second electrode layer is disposed on the light-emitting functional layer 40, and the second electrode layer is, for example, formed by evaporation Formed in a manner, and cover the first light emitting part 41 , the second light emitting part 42 and the third light emitting part 43 correspondingly.
  • an encapsulation structure (not shown) is also formed on the second electrode layer. It is easy to understand that since the functional film layer of the sub-pixel, especially the light-emitting functional layer 40 is an organic light-emitting material, it is very sensitive to external environments such as water vapor and oxygen. If the light-emitting functional layer 40 in the display panel 100 is exposed to water vapor In an environment of oxygen or oxygen, the performance of the display panel 100 will drop sharply or be completely damaged.
  • the encapsulation structure can block air and water vapor for the sub-pixels, thereby ensuring the reliability of the display panel 100 .
  • the encapsulation structure may be a one-layer or multi-layer structure, may be an organic film layer or an inorganic film layer, or may be a laminated structure of an organic film layer and an inorganic film layer.
  • the encapsulation layer may include two inorganic film layers and an organic film layer between the two inorganic film layers.
  • the embodiment of the present application further provides a display device, including the display panel 100 described above.
  • the display panel 100 includes an array substrate 10 and a plurality of sub-pixels (sub-pixels) disposed on the array substrate 10, such as a plurality of first sub-pixels, a plurality of second sub-pixels and A plurality of third sub-pixels, each first sub-pixel, each second sub-pixel and each third sub-pixel are respectively provided with a first light emitting part 41, a second light emitting part 42 and a third light emitting part emitting light of different wavelength bands.
  • Light emitting part 43 is disposed on the array substrate 10 and a plurality of sub-pixels (sub-pixels) disposed on the array substrate 10, such as a plurality of first sub-pixels, a plurality of second sub-pixels and A plurality of third sub-pixels, each first sub-pixel, each second sub-pixel and each third sub-pixel are respectively provided with a first light emitting part 41, a second light emitting part 42 and a third light emitting part emitting light of different wavelength bands.
  • Light emitting part 43
  • the specific film layer structure of the display panel 100 is similar to that of the first embodiment. For the same parts, this embodiment will not repeat them here.
  • the second pixel defining structure 32 includes The second light enhancing portion 321 and the second light transmitting portion 322 located on the side of the second light enhancing portion 321 away from the second light emitting portion 42 are provided;
  • the third pixel defining structure 33 includes the third light emitting portion 43 The third light intensifying part 331 adjacent to the third light intensifying part 331 and the third light transmitting part 332 located on the side of the third light intensifying part 331 away from the third light emitting part 43, wherein the second light intensifying part 321 and the third light intensifying part 321
  • the light enhancing material is provided in the reinforcing part 331, the light reinforcing material is not provided in the second light transmitting part 322 and the third light transmitting part 332, and the second light reinforcing part 321 and the third light enhancing
  • the particle size of the light enhancing material in the portion 331 is larger than
  • first pixel defining structure 31 , the second pixel defining structure 32 and the third pixel defining structure 33 all include a transparent substrate, and corresponding to the first light enhancing part 311 , the second light enhancing part 321 and the second pixel defining structure 33
  • the transparent substrates of the three light enhancing parts 331 are all doped with the light enhancing material.
  • the light enhancing material is arranged in the transparent base material of the first light enhancing part 311, the second light enhancing part 321 and the third light enhancing part 331 by doping, so that the first light enhancing part 311, the second light enhancing part 321 and the third light enhancing part 331
  • the first light-transmitting part 312, the second light-intensifying part 321, the second light-transmitting part 322, the third light-enhancing part 331, and the third light-transmitting part 332 form an integrated structure, which improves the stability of the light-enhancing material and ensures light enhancement.
  • the film layer bonding quality of the part and the light emitting part is not limit the combination of the light-enhancing part and the light-transmitting part.
  • the light-enhancing part is, for example, an independent film layer formed by the light-enhancing material, and the independent film layer is formed by inkjet
  • the method of printing is coated on the side wall of the light-transmitting part formed by the transparent substrate and close to the light-emitting part.
  • the specific process may be: after forming the entire surface of the light-enhancing material coating with a thickness w greater than 0 and less than 0.5 ⁇ m on the transparent substrate, the first transparent part 312 and the second transparent part 312 are etched away by using a yellow light process.
  • the light-enhancing material coating on areas other than the sidewalls of the light portion 322 and the third light-transmitting portion 332 is used to avoid interfering with the generation of light and affecting the work function between the anode and the light-emitting portion.
  • both the second light enhancement part 321 and the third light enhancement part 331 include a microstructure, and the first light enhancement part 311 may not include the microstructure, because the microstructure can adjust the light extraction of the subpixel by the light enhancement part.
  • the improvement effect of efficiency in this embodiment, the microstructure can specifically reduce the improvement effect of the light enhancement part on the light extraction efficiency of the sub-pixel, so as to balance the light extraction efficiency of each sub-pixel and ensure the display effect of the display panel 100 .
  • it can also be achieved by making the thickness of the second light enhancing part 321 and the third light strengthening part 331 thinner than the thickness of the first light strengthening part 311, and this embodiment will not discuss the specific details again. repeat.
  • the particle size of the light enhancing material in the first light enhancing part 311 is the smallest; the particle size of the light enhancing material in the second light enhancing part 321 is next; the light enhancing material in the third light enhancing part 331 the largest particle size.
  • the particle size range of the light enhancing material in the third light enhancing part 331 is larger than the particle size range of the light enhancing material in the first light enhancing part 311 and the second light enhancing part 321 . Since the light emitting colors of the first light emitting part 41 , the second light emitting part 42 and the third light emitting part 43 are blue, green and red respectively.
  • the particle size interval of the light enhancing material in the third light enhancing part 331 corresponding to the third light emitting part 43 whose light emission color is red to the largest, the red light of the fixed wavelength band emitted by the third light emitting part 43 can pass through the After being absorbed by the third light intensifying part 331, a red light band with a wider wavelength range is excited to enhance the CIE (International Commission on Illumination) effect of the red sub-pixel.
  • the embodiment of the present application further provides a display device, including the display panel 100 described above.

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Abstract

一种显示面板（100）及显示装置，显示面板（100）包括：阵列基板（10）；像素限定层（30）；发光功能层（40），第一发光部（41）、第二发光部（42）和第三发光部（43），第一发光部（41）具有更低的量子效率；像素限定结构包括第一像素限定结构（31），第一像素限定结构（31）包括光增强材料，在第一发光部（41）发出的光的激发下，光增强材料能够发出与第一发光部（41）发出的光颜色相同的光。

Description

显示面板及显示装置 技术领域
本申请涉及显示技术领域，具体涉及一种显示面板及显示装置。
 背景技术
有机发光二极管（organic light emitting diode；OLED）由于可制备在柔性衬底上，近几年备受市场青睐。
中小尺寸方面，随着折叠手机的到来，OLED的发展可谓进入二次爆发阶段。但是，目前手机面板最常用的红（R）、绿（G）、蓝（B）三原色像素并置（side-by-side pixelation）体系中，红、绿子像素的发光部采用的磷光体系，其理论内量子效率可达到100%；蓝色子像素的发光部仍然采用的是传统蓝色荧光结构，该荧光材料由于只能利用25％的单线态激子而使得理论内量子效率仅为25％，由于只能利用25％的单线态激子，蓝光荧光结构部分的效率低和功耗大一直是阻碍OLED显示发展的瓶颈问题。
 技术问题
本发明实施例提供一种显示面板及显示装置，可以解决目前的显示面板发光效率低、功耗大的问题。
 技术解决方案
本申请实施例提供一种显示面板，包括：
阵列基板；
像素限定层，位于所述阵列基板的一侧，所述像素限定层包括多个像素限定结构；
发光功能层，包括设置于所述像素限定结构内的多个发光部，所述多个发光部包括第一发光部、第二发光部和第三发光部，所述第一发光部发出的光的量子效率低于所述第二发光部和第三发光部发出的光的量子效率；
其中，所述多个像素限定结构包括第一像素限定结构，所述第一发光部设置在所述第一像素限定结构内；所述第一像素限定结构包括光增强材料，在所述第一发光部发出的光的激发下，所述光增强材料能够发出与所述第一发光部发出的光颜色相同的光。
可选的，所述光增强材料为纳米晶粒子。
可选的，所述第一像素限定结构包括：
第一光增强部，与所述第一发光部邻接设置；
第一透光部，位于所述第一光增强部的远离所述第一发光部的一侧；
其中，所述第一光增强部包括所述光增强材料。
可选的，所述第一光增强部和所述第一透光部均包括透明基材；
其中，所述光增强材料掺杂在所述第一光增强部的透明基材中。
可选的，所述第一光增强部还包括微结构。
可选的，所述像素限定结构还包括分别与所述第二发光部和第三发光部对应设置的第二像素限定结构和第三像素限定结构，所述第二像素限定结构包括与所述第二发光部邻接设置的第二光增强部，所述第三像素限定结构包括与所述第三发光部邻接设置的第三光增强部，所述第二光增强部和所述第三光增强部中均设置有光增强材料；
其中，所述第二光增强部和所述第三光增强部中的光增强材料的粒径大于所述第一光增强部中的光增强材料的粒径。
可选的，所述第一发光部、第二发光部和第三发光部的发光颜色分别为蓝色、绿色和红色。
可选的，所述第一光增强部、所述第二光增强部和所述第三光增强部中的光增强材料的粒径依次增大。
可选的，所述第三光增强部中的光增强材料的粒径区间大于所述第一光增强部和所述第二光增强部中的光增强材料的粒径区间。
可选的，所述第一光增强部、所述第二光增强部和所述第三光增强部中的光增强材料的粒径区间分别为a、b和c，其中，a=（0，2】；b=（2，3】；c=【5，8】。
本申请实施例还提供一种显示装置，其中，包括显示面板，所述显示面板包括：
阵列基板；
像素限定层，位于所述阵列基板的一侧，所述像素限定层包括多个像素限定结构；
发光功能层，包括设置于所述像素限定结构内的多个发光部，所述多个发光部包括第一发光部、第二发光部和第三发光部，所述第一发光部发出的光的量子效率低于所述第二发光部和第三发光部发出的光的量子效率；
其中，所述多个像素限定结构包括第一像素限定结构，所述第一发光部设置在所述第一像素限定结构内；所述第一像素限定结构包括光增强材料，在所述第一发光部发出的光的激发下，所述光增强材料能够发出与所述第一发光部发出的光颜色相同的光。
可选的，所述光增强材料为纳米晶粒子。
可选的，所述第一像素限定结构包括：
第一光增强部，与所述第一发光部邻接设置；
第一透光部，位于所述第一光增强部的远离所述第一发光部的一侧；
其中，所述第一光增强部包括所述光增强材料。
可选的，所述第一光增强部和所述第一透光部均包括透明基材；
其中，所述光增强材料掺杂在所述第一光增强部的透明基材中。
可选的，所述第一光增强部还包括微结构。
可选的，所述像素限定结构还包括分别与所述第二发光部和第三发光部对应设置的第二像素限定结构和第三像素限定结构，所述第二像素限定结构包括与所述第二发光部邻接设置的第二光增强部，所述第三像素限定结构包括与所述第三发光部邻接设置的第三光增强部，所述第二光增强部和所述第三光增强部中均设置有光增强材料；
其中，所述第二光增强部和所述第三光增强部中的光增强材料的粒径大于所述第一光增强部中的光增强材料的粒径。
可选的，所述第一发光部、第二发光部和第三发光部的发光颜色分别为蓝色、绿色和红色。
可选的，所述第一光增强部、所述第二光增强部和所述第三光增强部中的光增强材料的粒径依次增大。
可选的，所述第三光增强部中的光增强材料的粒径区间大于所述第一光增强部和所述第二光增强部中的光增强材料的粒径区间。
可选的，所述第一光增强部、所述第二光增强部和所述第三光增强部中的光增强材料的粒径区间分别为a、b和c，其中，a=（0，2】；b=（2，3】；c=【5，8】。
 有益效果
本申请提供的显示面板，通过在至少部分发光部对应的像素限定结构中设置光增强材料，在该发光部发出的光的激发下，该光增强材料能够发出与该发光部发出的光颜色相同的光，从而能够减少至少部分像素限定层对光的吸收，提升显示面板的光取出效率，降低显示面板的功耗。
 附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本申请实施例一所示出的一显示面板的示意图。
图2是本申请实施例一所示出的一微结构的平面示意图。
图3是本申请实施例一所示出的另一微结构的平面示意图。
图4是本申请实施例二所示出的一显示面板的示意图。
 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。此外，应当理解的是，此处所描述的具体实施方式仅用于说明和解释本申请，并不用于限制本申请。在本申请中，在未作相反说明的情况下，使用的方位词如“上”和“下”通常是指装置实际使用或工作状态下的上和下，具体为附图中的图面方向；而“内”和“外”则是针对装置的轮廓而言的。
下文的公开提供了许多不同的实施方式或例子用来实现本申请的不同结构。为了简化本申请的公开，下文中对特定例子的部件和设置进行描述。当然，它们仅仅为示例，并且目的不在于限制本申请。此外，本申请可以在不同例子中重复参考数字和/或参考字母，这种重复是为了简化和清楚的目的，其本身不指示所讨论各种实施方式和/或设置之间的关系。此外，本申请提供了的各种特定的工艺和材料的例子，但是本领域普通技术人员可以意识到其他工艺的应用和/或其他材料的使用。以下分别进行详细说明，需说明的是，以下实施例的描述顺序不作为对实施例优选顺序的限定。
显示面板一般会包括多种颜色的子像素，例如红色子像素、绿色子像素、蓝色子像素等，现有的显示面板中，不同颜色子像素的发光部基于发光体系、材料、结构等方面的不同，可能存在量子效率上的差异，即部分发光部的光电转换能力较强，部分发光部的光电转化能力较弱，进而造成显示面板的光取出效率较低，功耗较大的问题。
针对上述问题，本申请提供了一种显示面板，该显示面板在至少部分发光部对应的像素限定结构中设置光增强材料，在该发光部发出的光的激发下，该光增强材料能够发出与该发光部发出的光颜色相同的光，从而能够减少至少部分像素限定层对光的吸收，提升显示面板的光取出效率，降低显示面板的功耗。
实施例一
参照图1，本实施例中，该显示面板100包括阵列基板10和设置在该阵列基板10上的多个子像素（sub-pixel），如多个第一子像素、多个第二子像素及多个第三子像素，每个第一子像素、每个第二子像素及每个第三子像素中分别设置有发射不同波段光线的第一发光部41、第二发光部42和第三发光部43。
本实施例中，该阵列基板10例如包括衬底基板、设置于衬底基板的薄膜晶体管（Thin-film transistor，TFT）层。当然，该阵列基板10例如还可以包括平坦化层、钝化层等膜层，在此不作限定。
衬底基板可以为刚性基板或柔性基板，例如由诸如玻璃材料、金属材料或包括聚对苯二甲酸乙二醇酯（PET）、聚萘二甲酸乙二醇酯（PEN）或聚酰亚胺（PI）等的塑胶材料中合适的材料形成。
在形成TFT之前，可以在衬底基板上形成诸如缓冲层等层结构。缓冲层可以形成在衬底基板的整个表面上，也可以通过被图案化来形成。缓冲层可以包括PET、PEN、聚丙烯酸酯和/或聚酰亚胺等材料中合适的材料，以单层或多层堆叠的形式形成层状结构。缓冲层还可以由氧化硅或氮化硅形成，或者可以为包括有机材料和/或无机材料的复合层。
薄膜晶体管层中的薄膜晶体管可以包括半导体层、栅电极、源电极和漏电极。半导体层可以由非晶硅层、金属氧化物或多晶硅层形成，或者可以由有机半导体材料形成。在一个实施例中，半导体层包括沟道区和掺杂有掺杂剂的源区与漏区。
由于薄膜晶体管具有复杂的层结构，因此有必要在薄膜晶体管上形成平坦化层，以便形成足够平坦的顶表面。在形成平坦化层后，可以在平坦化层中形成电极通孔（未示出），以暴露TFT的漏电极。
本实施例中，每个子像素可以包括阳极、阴极、设置于该阳极和阴极之间的发光部及围设于发光部外围的像素限定结构。该子像素可以为蓝色子像素、绿色子像素及红色子像素中的至少一种。在本实施例中，该第一子像素为蓝色子像素，该第二子像素为绿色子像素，该第三子像素为红色子像素；也即该第一发光部41、第二发光部42和第三发光部43的发光颜色分别为蓝色、绿色和红色。
子像素中的阳极例如由设置于该阵列基板10上的第一电极层20形成，该第一电极层20通过平坦层中的电极通孔与TFT的漏电极电性连接。
该阵列基板10上例如还设置有像素限定层30，该像素限定层30具体设置在该第一电极层20上，并包括多个像素限定结构，该多个像素限定结构包括第一像素限定结构31、第二像素限定结构32和第三像素限定结构33。该像素限定结构由诸如聚丙烯酸酯和聚酰亚胺等材料中合适的有机材料的单一材料层或复合材料层形成。本实施例中，该像素限定结构可以包括由聚酰亚胺形成的透明基材，该透明基材的透光率大于0，小于100%。
该阵列基板10上例如还设置有发光功能层40，该发光功能层40具体设置在该像素限定层30上，该发光功能层40包括对应设置在该多个像素限定结构内的多个发光部，该发光部包括该第一发光部41、第二发光部42和第三发光部43，该第一发光部41对应设置于该第一像素限定结构31内，该第二发光部42对应设置于该第二像素限定结构32内，该第三发光部43对应设置于该第三像素限定结构33内。
其中，该第一发光部41的量子效率低于该第二发光部42和第三发光部43的量子效率，该第二发光部42和第三发光部43的量子效率可以相同或不同，该第一像素限定结构31包括光增强材料，该第二像素限定结构32和该第三像素限定结构33中未设置该光增强材料。在该第一发光部41发出的光的激发下，该光增强材料能够发出与该第一发光部41发出的光颜色相同的光，从而降低该第一像素限定结构31对该第一发光部41发出的光线的吸收作用，提升第一子像素的出光量，进而提升该显示面板100的光提取效率。需要说明的是，在本申请的其他实施例中，当第一发光部和第二发光部的量子效率低于第三发光部的量子效率时，包含光增强材料的光增强部还可以仅设置于第一像素限定结构和第二像素限定结构中，或当第一发光部和第三发光部的量子效率低于第二发光部的量子效率时，包含光增强材料的光增强部还可以仅设置于第一像素限定结构和第三像素限定结构中。
进一步的，该光增强材料为纳米晶粒子。该纳米晶粒子与该第一子像素中的第一发光部41所发射光线的波段匹配（如可使得纳米晶粒子的物理尺寸与上述光线的波段之间能够产生等离子共振，相应的不同纳米颗粒的物理尺寸就随着不同发光部发射光线的波段不同而有所区别），从而能够在该第一发光部41发出的光的激发下，发出与该第一发光部41发出的光颜色相同的光，从而降低该第一像素限定结构31的透明基材对该第一发光部41发出的光线的吸收作用，提升第一子像素的出光量，进而提升该显示面板100的光提取效率。具体的，该第一发光部41的发光颜色为蓝色，由于蓝光具有一定的波长区间，对应的，该第一像素限定结构31中的纳米晶粒子的粒径区间为a，a=（0，2】，即该第一发光部41中的纳米晶粒子具有多种不同的粒径，以分别对应该第一发光部41蓝光的各个波长区间，在提升光提取效率的同时保证显示面板100的色准度。当然，本申请对该光增强材料的具体材质并不做限定，其他能够在发光部所发光的激发下发出与该发光部发光颜色相同的光的材料均属于本申请所保护的范畴。
进一步的，该第一像素限定结构31包括：第一光增强部311，与该第一发光部41邻接设置，该第一光增强部311的厚度w大于0μm，且小于等于0.5μm；第一透光部312，位于该第一光增强部311的远离该第一发光部41的一侧；其中，该第一光增强部311包括该光增强材料。具体的，该第一透光部312中例如未设置该光增强材料，从而能够避免外界环境光照射到该第一像素限定结构31的该第一透光部312区域时产生干扰光，从而影响显示面板100的显示效果。该第二像素限定结构32和第三像素限定结构33中由于未设置光增强材料，因此，该第二像素限定结构32包括与该第二发光部42邻接设置的第二透光部322；该第三像素限定结构33包括与该第三发光部43邻接设置的第三透光部332。
进一步的，该第一光增强部311、第一透光部312均包括透明基材，该透明基材例如为聚酰亚胺材质，其中，该光增强材料掺杂在该第一光增强部311的透明基材中。该第二像素限定结构32的该第二透光部322和该第三像素限定结构33的该第三透光部332均包括该透明基材，并且该像素限定层中位于不同区域的透明基材及该透明基材中的光增强材料一体成型制作。本申请通过将该光增强材料采用掺杂的方式设置在第一光增强部311的透明基材中，使该第一光增强部311与第一透光部312形成一体式结构，提升光增强材料的稳定性，保证该第一光增强部311与该第一发光部41的膜层结合质量，避免膜层剥离。当然，本申请并不对该第一光增强部311和第一透光部312的结合方式进行限制，在其他实施例中，该第一光增强部311例如为由该光增强材料形成的独立膜层，该独立膜层通过喷墨打印的方式涂布在由透明基材形成的靠近该第一发光部41的第一透光部312的侧壁上。具体过程可以是：在该透明基材上形成厚度w大于0且小于0.5μm的整面的光增强材料涂层后，利用黄光工艺刻蚀掉除该第一发光部41的第一透光部312的侧壁以外区域的光增强材料涂层，以避免干扰光的产生和影响阳极与发光部之间的功函。
进一步的，参照图2和图3，该第一光增强部311包括微结构51，通过使该第一光增强部311形成图案化的微结构51，使得该第一光增强部311对该第一子像素光提取效率的提升效果能够被有效控制，从而有限度的该第一子像素的出光量，提升并均衡显示面板100各子像素的显示效果。具体的，该微结构51例如为多个间隔设置的光增强条511，各个光增强条511之间填充有该透明基材；或该微结构51为多个间隔设置的岛状的光增强单元512，相邻的光增强单元512之间填充有该透明基材。
子像素中的阴极例如由设置于该阵列基板10上的第二电极层（未示出）形成，该第二电极层设置于该发光功能层40上，该第二电极层例如通过蒸镀的方式形成，并对应覆盖该第一发光部41、第二发光部42和第三发光部43。
该第二电极层上例如还形成有封装结构（未示出）。容易理解的是，由于子像素的功能膜层，尤其是发光功能层40为有机发光材料，其对水汽和氧气等外部环境十分敏感，如果将显示面板100中的发光功能层40暴露在有水汽或氧气的环境中，会造成显示面板100的性能急剧下降或者完全损坏。封装结构能够为子像素阻挡空气及水汽，从而保证显示面板100的可靠性。可以理解的是，封装结构可以是一层或多层结构，可以是有机膜层或无机膜层，亦可是有机膜层和无机膜层的叠层结构。例如，一些实施例中，封装层可包括两层无机膜层及一层位于两层无机膜层之间的有机膜层。
另一方面，本申请实施例还提供了一种显示装置，包括上述任一项的显示面板100。
实施例二
参照图4，本实施例中，该显示面板100包括阵列基板10和设置在该阵列基板10上的多个子像素（sub-pixel），如多个第一子像素、多个第二子像素及多个第三子像素，每个第一子像素、每个第二子像素及每个第三子像素中分别设置有发射不同波段光线的第一发光部41、第二发光部42和第三发光部43。
该显示面板100的具体膜层结构与实施例一相类似，对于相同的部分，本实施例在此不再赘述，不同的是，该第二像素限定结构32包括与该第二发光部42邻接设置的第二光增强部321和位于该第二光增强部321的远离该第二发光部42一侧的第二透光部322；该第三像素限定结构33包括与该第三发光部43邻接设置的第三光增强部331和位于该第三光增强部331的远离该第三发光部43一侧的第三透光部332，其中，该第二光增强部321和该第三光增强部331中均设置有该光增强材料，该第二透光部322和该第三透光部332中均未设置有该光增强材料，该第二光增强部321和该第三光增强部331中的光增强材料的粒径大于该第一光增强部311中的光增强材料的粒径，该光增强材料例如为纳米晶离子。通过在显示面板100的各个像素限定结构中设置光增强部，能够整体提升显示面板的光提取效率，改善显示效果。
进一步的，该第一像素限定结构31、该第二像素限定结构32和第三像素限定结构33均包括透明基材，并在对应该第一光增强部311、第二光增强部321和第三光增强部331的透明基材中均掺杂有该光增强材料。本申请通过将该光增强材料采用掺杂的方式设置在第一光增强部311、第二光增强部321和第三光增强部331的透明基材中，使该第一光增强部311、第一透光部312、第二光增强部321、第二透光部322、第三光增强部331、第三透光部332形成一体式结构，提升光增强材料的稳定性，保证光增强部与发光部的膜层结合质量。当然，本申请并不对该光增强部和透光部的结合方式进行限制，在其他实施例中，该光增强部例如为由该光增强材料形成的独立膜层，该独立膜层通过喷墨打印的方式涂布在由透明基材形成的靠近该发光部的透光部的侧壁上。具体过程可以是：在该透明基材上形成厚度w大于0且小于0.5μm的整面的光增强材料涂层后，利用黄光工艺刻蚀掉除该第一透光部312、第二透光部322和第三透光部332的侧壁以外区域的光增强材料涂层，以避免干扰光的产生和影响阳极与发光部之间的功函。
进一步的，该第二光增强部321和第三光增强部331均包括微结构，该第一光增强部311可以不包括该微结构，由于该微结构能够调节光增强部对子像素光提取效率的提升效果，本实施例中该微结构具体可以是降低该光增强部对该子像素光提取效率的提升效果，从而能够均衡各子像素的光提取效率，保证显示面板100的显示效果。当然，为达到上述目的，还可以通过使该第二光增强部321和第三光增强部331的厚度薄于该第一光增强部311的厚度的方式实现，本实施例对具体细节不再赘述。
进一步的，该第一光增强部311中的光增强材料的粒径最小；该第二光增强部321中的光增强材料的粒径次之；该第三光增强部331中的光增强材料的粒径最大。
进一步的，该第三光增强部331中的光增强材料的粒径区间大于该第一光增强部311和该第二光增强部321中的光增强材料的粒径区间。由于该第一发光部41、第二发光部42和第三发光部43的发光颜色分别为蓝色、绿色和红色。本申请通过将发光颜色为红色的第三发光部43对应的第三光增强部331中的光增强材料的粒径区间设置的最大，能够使第三发光部43发出的固定波段的红光经过该第三光增强部331的吸收后，激发出波长范围更广的红光波段，起到提升红色子像素CIE（International Commission on Illumination）效果的作用。具体的，该第一光增强部311、该第二光增强部321和该第三光增强部331中的光增强材料的粒径区间分别为a、b和c，其中，a=（0，2】；b=（2，3】；c=【5，8】。
另一方面，本申请实施例还提供了一种显示装置，包括上述任一项的显示面板100。
以上对本申请实施例所提供的一种显示面板进行了详细介绍，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方法及其核心思想；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. 一种显示面板，其中，包括：
    阵列基板；
    像素限定层，位于所述阵列基板的一侧，所述像素限定层包括多个像素限定结构；
    发光功能层，包括设置于所述像素限定结构内的多个发光部，所述多个发光部包括第一发光部、第二发光部和第三发光部，所述第一发光部发出的光的量子效率低于所述第二发光部和第三发光部发出的光的量子效率；
    其中，所述多个像素限定结构包括第一像素限定结构，所述第一发光部设置在所述第一像素限定结构内；所述第一像素限定结构包括光增强材料，在所述第一发光部发出的光的激发下，所述光增强材料能够发出与所述第一发光部发出的光颜色相同的光。
  2. 根据权利要求1所述的显示面板，其中，所述光增强材料为纳米晶粒子。
  3. 根据权利要求1所述的显示面板，其中，所述第一像素限定结构包括：
    第一光增强部，与所述第一发光部邻接设置；
    第一透光部，位于所述第一光增强部的远离所述第一发光部的一侧；
    其中，所述第一光增强部包括所述光增强材料。
  4. 根据权利要求3所述的显示面板，其中，所述第一光增强部和所述第一透光部均包括透明基材；
    其中，所述光增强材料掺杂在所述第一光增强部的透明基材中。
  5. 根据权利要求4所述的显示面板，其中，所述第一光增强部还包括微结构。
  6. 根据权利要求1所述的显示面板，其中，所述像素限定结构还包括分别与所述第二发光部和第三发光部对应设置的第二像素限定结构和第三像素限定结构，所述第二像素限定结构包括与所述第二发光部邻接设置的第二光增强部，所述第三像素限定结构包括与所述第三发光部邻接设置的第三光增强部，所述第二光增强部和所述第三光增强部中均设置有光增强材料；
    其中，所述第二光增强部和所述第三光增强部中的光增强材料的粒径大于所述第一光增强部中的光增强材料的粒径。
  7. 根据权利要求6所述的显示面板，其中，所述第一发光部、第二发光部和第三发光部的发光颜色分别为蓝色、绿色和红色。
  8. 根据权利要求7所述的显示面板，其中，所述第一光增强部、所述第二光增强部和所述第三光增强部中的光增强材料的粒径依次增大。
  9. 根据权利要求8所述的显示面板，其中，所述第三光增强部中的光增强材料的粒径区间大于所述第一光增强部和所述第二光增强部中的光增强材料的粒径区间。
  10. 根据权利要求9所述的显示面板，其中，定义所述第一光增强部、所述第二光增强部和所述第三光增强部中的光增强材料的粒径区间分别为a、b和c，其中，a=（0，2】；b=（2，3】；c=【5，8】。
  11. 一种显示装置，其中，包括显示面板，所述显示面板包括：
    阵列基板；
    像素限定层，位于所述阵列基板的一侧，所述像素限定层包括多个像素限定结构；
    发光功能层，包括设置于所述像素限定结构内的多个发光部，所述多个发光部包括第一发光部、第二发光部和第三发光部，所述第一发光部发出的光的量子效率低于所述第二发光部和第三发光部发出的光的量子效率；
    其中，所述多个像素限定结构包括第一像素限定结构，所述第一发光部设置在所述第一像素限定结构内；所述第一像素限定结构包括光增强材料，在所述第一发光部发出的光的激发下，所述光增强材料能够发出与所述第一发光部发出的光颜色相同的光。
  12. 根据权利要求11所述的显示装置，其中，所述光增强材料为纳米晶粒子。
  13. 根据权利要求11所述的显示装置，其中，所述第一像素限定结构包括：
    第一光增强部，与所述第一发光部邻接设置；
    第一透光部，位于所述第一光增强部的远离所述第一发光部的一侧；
    其中，所述第一光增强部包括所述光增强材料。
  14. 根据权利要求13所述的显示装置，其中，所述第一光增强部和所述第一透光部均包括透明基材；
    其中，所述光增强材料掺杂在所述第一光增强部的透明基材中。
  15. 根据权利要求14所述的显示装置，其中，所述第一光增强部还包括微结构。
  16. 根据权利要求11所述的显示装置，其中，所述像素限定结构还包括分别与所述第二发光部和第三发光部对应设置的第二像素限定结构和第三像素限定结构，所述第二像素限定结构包括与所述第二发光部邻接设置的第二光增强部，所述第三像素限定结构包括与所述第三发光部邻接设置的第三光增强部，所述第二光增强部和所述第三光增强部中均设置有光增强材料；
    其中，所述第二光增强部和所述第三光增强部中的光增强材料的粒径大于所述第一光增强部中的光增强材料的粒径。
  17. 根据权利要求16所述的显示装置，其中，所述第一发光部、第二发光部和第三发光部的发光颜色分别为蓝色、绿色和红色。
  18. 根据权利要求17所述的显示装置，其中，所述第一光增强部、所述第二光增强部和所述第三光增强部中的光增强材料的粒径依次增大。
  19. 根据权利要求18所述的显示装置，其中，所述第三光增强部中的光增强材料的粒径区间大于所述第一光增强部和所述第二光增强部中的光增强材料的粒径区间。
  20. 根据权利要求19所述的显示装置，其中，定义所述第一光增强部、所述第二光增强部和所述第三光增强部中的光增强材料的粒径区间分别为a、b和c，其中，a=（0，2】；b=（2，3】；c=【5，8】。
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