WO2022246689A1 - 阵列基板和显示装置 - Google Patents

阵列基板和显示装置 Download PDF

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Publication number
WO2022246689A1
WO2022246689A1 PCT/CN2021/096060 CN2021096060W WO2022246689A1 WO 2022246689 A1 WO2022246689 A1 WO 2022246689A1 CN 2021096060 W CN2021096060 W CN 2021096060W WO 2022246689 A1 WO2022246689 A1 WO 2022246689A1
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WIPO (PCT)
Prior art keywords
light
base
array substrate
emitting devices
emitting device
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PCT/CN2021/096060
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English (en)
French (fr)
Inventor
樊星
李鑫
韩城
李彦松
Original Assignee
京东方科技集团股份有限公司
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Application filed by 京东方科技集团股份有限公司 filed Critical 京东方科技集团股份有限公司
Priority to PCT/CN2021/096060 priority Critical patent/WO2022246689A1/zh
Priority to CN202180001283.XA priority patent/CN115700047A/zh
Priority to US17/772,245 priority patent/US20240147803A1/en
Publication of WO2022246689A1 publication Critical patent/WO2022246689A1/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
    • H10K59/353—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels characterised by the geometrical arrangement of the RGB subpixels
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K77/00—Constructional details of devices covered by this subclass and not covered by groups H10K10/80, H10K30/80, H10K50/80 or H10K59/80
    • H10K77/10—Substrates, e.g. flexible substrates
    • 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
    • H10K59/124—Insulating layers formed between TFT elements and OLED elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
    • H01L21/77—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate
    • 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
    • H10K2102/311—Flexible OLED
    • 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 disclosure belongs to the field of display technology, and in particular relates to an array substrate and a display device.
  • OLED Organic Light-Emitting Diode
  • the metal cathode and the reflective anode at the bottom form a resonant cavity (microcavity structure), and the light of the wavelength satisfying the resonance condition will be strengthened due to constructive interference.
  • the distance between the light passing through the metal cathode and the reflective anode at the bottom will change accordingly, that is to say, the paths of light passing through are different under different viewing angles, resulting in differences in brightness and chromaticity under different viewing angles. Therefore, the current top-emitting organic electroluminescent devices have a serious problem of angular misalignment.
  • the present disclosure aims to solve at least one of the technical problems existing in the prior art, and provides an array substrate and a display device.
  • an array substrate which includes:
  • At least one adjustment part is arranged on the base, and the adjustment part has a first cross-section along a direction perpendicular to the base; the first cross-section includes a top edge and a bottom edge and connects the first side edge and the second edge Two side edges; wherein, the bottom edge is closer to the base than the top edge, and the orthographic projection of the top edge on the base is located within the orthographic projection of the bottom edge on the base; At least one of the first side and the second side is stepped;
  • a buffer layer arranged on the side of the adjustment part away from the base
  • a plurality of light-emitting devices arranged on the side of the buffer layer away from the substrate, the light-emitting devices include a first electrode, a light-emitting layer, and a second electrode arranged in sequence along the direction away from the substrate; and at least part of the light-emitting devices
  • the orthographic projection of the first electrode on the substrate covers at least one orthographic projection of the adjustment portion on the substrate.
  • both the first side and the second side are stepped, and take a straight line passing through the midpoint of the top side and the bottom side as the axis of symmetry, the first side and the second side
  • the second side is arranged symmetrically.
  • the first adjusting portion includes sub-adjusting structures arranged in layers along a direction away from the base, and the area of each of the sub-adjusting structures decreases sequentially along a direction away from the base.
  • the number of layers of the sub-regulation structure is 2 layers.
  • the material of the sub-regulation structure includes inorganic materials.
  • the plurality of light-emitting devices form a plurality of pixel units, and the light-emitting devices in each of the pixel units include red light-emitting devices, green light-emitting devices, and blue light-emitting devices;
  • An electrode is orthographically projected on the base to cover at least one of the adjustment parts.
  • At least part of the first electrode of the light-emitting device covers a plurality of the regulating parts arranged at intervals.
  • the array substrate is divided into a flat area and a bent area; at least a part of the first electrode of the light emitting device located in the bent area covers at least one of the adjustment parts in an orthographic projection on the substrate.
  • the material of the buffer layer is an organic material.
  • an embodiment of the present disclosure provides a display device, which includes the above-mentioned array substrate.
  • FIG. 1 is a schematic diagram of light output from an exemplary array substrate
  • FIG. 2 is a schematic structural diagram of an array substrate provided by an embodiment of the present disclosure
  • FIG. 3 is a schematic diagram of a cross-sectional structure of the blue light-emitting device shown in FIG. 2 along the D-D direction;
  • FIG. 4 is a schematic structural diagram of another array substrate provided by an embodiment of the present disclosure.
  • FIG. 5 is a schematic diagram of a cross-sectional structure of the blue light-emitting device shown in FIG. 4 along the D-D direction;
  • Fig. 6 is a schematic cross-sectional structure diagram of another blue light-emitting device shown in Fig. 2 along the D-D direction;
  • FIG. 7 is a schematic structural diagram of an array substrate provided by an embodiment of the present disclosure.
  • the light-emitting device includes but is not limited to an organic electroluminescent device OLED, and the light-emitting device is an OLED as an example for description below.
  • the OLED includes a first electrode, an organic functional layer and a second electrode arranged in sequence along a direction away from the substrate.
  • the first electrode can be the anode of the light-emitting device, and it can adopt a metal material with better conductivity sandwiched between two layers of indium tin oxide (ITO).
  • ITO indium tin oxide
  • the metal material can be aluminum (Al), silver (Ag) , any one of titanium (Ti), molybdenum (Mo), or an alloy of any of the above-mentioned materials.
  • the organic functional layer may include a light-emitting layer, and the material of the light-emitting layer includes small molecular organic materials or polymer molecular organic materials, which may be fluorescent light-emitting materials or phosphorescent light-emitting materials, which may emit red light, green light, blue light, or white light, etc. and, according to different actual needs, in different examples, the organic functional layer may further include functional layers such as an electron injection layer, an electron transport layer, a hole injection layer, and a hole transport layer.
  • the second electrode covers the organic functional layer, and its polarity can be opposite to that of the first electrode, and can be the cathode of the light-emitting device.
  • the cathode can be lithium (Li), aluminum (Al), magnesium (Mg), silver (Ag) ) and other metal materials, or an alloy of any of the above-mentioned materials.
  • OLEDs are classified into top emission type and bottom emission type according to the emission direction of light.
  • the light of the bottom-emitting OLED is emitted through the substrate side, and the cathode of the OLED with this structure usually uses a metal material as the reflective electrode.
  • the light of the top-emission OLED is emitted from the cathode.
  • the cathode of the OLED with this structure can also use metal materials, it needs to evaporate a thinner metal material as the cathode so that the light can be emitted from the cathode.
  • the anode of the OLED with this structure can be a reflective anode, or a reflective layer can be provided on the side of the anode close to the substrate, so that light can be emitted through the cathode.
  • the OLEDs in the following embodiments are described by taking a top-emitting OLED with a reflective anode as an example.
  • FIG. 1 is a schematic diagram of light output from an exemplary array substrate.
  • the array substrate includes a base and a plurality of pixel units arranged on the base, and each pixel unit includes a plurality of OLEDs.
  • the pixel unit includes a blue OLED, a green OLED and a red OLED as an example for illustration.
  • the anode, cathode and light-emitting layer of each OLED together form a microcavity structure. In this microcavity structure, the light emitted by the light-emitting layer will be reflected back and forth in the microcavity multiple times, and finally emitted from the light-emitting side of the anode.
  • the direction of the light emitted from the light emitting side of the anode of each OLED device is almost in the vertical direction, and the amount of light emitted in the non-vertical direction is small.
  • the brightness of the light emitted by the blue OLED decays faster with the increase of the viewing angle, that is, the non-vertical direction of the blue OLED emits the least amount of light. Therefore, the light emitted by the green OLED, the red OLED, and the blue OLED in the pixel units at different positions has a certain color shift after light mixing.
  • FIG. 2 is a schematic structural diagram of an array substrate provided by an embodiment of the present disclosure.
  • the array substrate includes A plurality of pixel units arranged in an array, each pixel unit A includes a green light-emitting device G, a red light-emitting device R and a blue light-emitting device B.
  • each pixel unit A includes one red light emitting device R, two green light emitting devices G and one blue light emitting device B.
  • the number of the red light emitting device R, the green light emitting device G and the blue light emitting device B in each pixel unit may also be one.
  • FIG. 1 is a schematic structural diagram of an array substrate provided by an embodiment of the present disclosure.
  • the array substrate includes A plurality of pixel units arranged in an array, each pixel unit A includes a green light-emitting device G, a red light-emitting device R and a blue light-emitting device B.
  • each pixel unit A includes one red light emitting device R, two green light emitting devices
  • FIG. 3 is a schematic cross-sectional structure diagram of the blue light emitting device shown in FIG. 2 along the D-D direction.
  • the adjusting part 32 is arranged on the base 31
  • the buffer layer 33 is arranged on the side of the adjusting part 32 away from the base 31
  • the anode 34 of the blue light-emitting device is arranged on the side of the buffer layer 33 away from the base 31
  • the orthographic projection of the anode 34 of the blue light-emitting device on the substrate 31 covers the orthographic projection of the adjustment portion 32 on the substrate.
  • the red light-emitting device R includes but not limited to an organic electroluminescent device OLED
  • the green light-emitting device G includes but not limited to an organic electroluminescent device OLED
  • the blue light-emitting device B includes but not limited to an organic electroluminescent device OLED
  • the red light-emitting device R, the green light-emitting device G and the blue light-emitting device B are all OLEDs as an example for illustration.
  • the adjustment portion 32 has a first cross-section along a direction perpendicular to the base 31, the first cross-section includes a top edge and a bottom edge, a first side edge and a second side edge, wherein the bottom edge is closer to the top edge than the top edge. It is close to the base 31 , and the orthographic projection of the top edge on the base 31 is within the orthographic projection of the bottom edge on the base 31 , and at least one of the first side and the second side is stepped.
  • the anode of the blue light-emitting device B formed on the adjustment part 32 not only has a flat top surface (the area shown by P1 in FIG. 3 ), but also has a stepped top surface.
  • the two sides of the first cross-section of the adjustment portion 32 are both step-shaped as an example for illustration. Of course, as long as at least one side of the adjustment portion 32 is stepped, it is within the protection scope of the present disclosure.
  • the first side and the second side of the first cross-section of the regulating portion 32 are arranged symmetrically with a line passing through the midpoint of the top side and the bottom side as the axis of symmetry, and the first Both the side and the second side are stepped and have the same shape.
  • the first side and the second side of the adjustment part 32 symmetrically with the straight line passing through the midpoint of the top side and the bottom side as the symmetry axis, it is ensured that The light output is uniform, thus ensuring the uniformity of the display.
  • FIG. 4 is a schematic structural view of another array substrate provided by an embodiment of the present disclosure.
  • the array substrate includes a plurality of The pixel units A are arranged, and each pixel unit includes a green light emitting device G, a red light emitting device R and a blue light emitting device B.
  • each pixel unit A includes one red light emitting device R, two green light emitting devices G and one blue light emitting device B.
  • the number of the red light emitting device R, the green light emitting device G and the blue light emitting device B in each pixel unit may also be one.
  • FIG. 5 is a schematic cross-sectional structure diagram of the blue light emitting device B shown in FIG. 4 along the D-D direction.
  • any blue light-emitting device B of the array substrate is provided with two adjustment parts on the side close to the substrate 51, denoted by the first adjustment part 52 and the second adjustment part 52' respectively.
  • the buffer layer 53 The anode 54 of the blue light-emitting device B is arranged on the side of the buffer layer 53 away from the substrate, and the anode 54 of the blue light-emitting device B is placed on the substrate.
  • the orthographic projection on 51 covers the orthographic projections of the first adjustment part 52 and the second adjustment part 52 ′ on the substrate 51 .
  • the first adjusting part 52 and the second adjusting part 52' are arranged at intervals and have the same structure.
  • Both the first adjusting part 52 and the second adjusting part 52' have a first section along a direction perpendicular to the base 51, and the first section includes a top Side and base and first side and second side, wherein, the base is closer to the base 51 than the top, and the orthographic projection of the top on the base 51 is located in the orthographic projection of the base on the base 51, the first The one side and the second side are arranged symmetrically with the straight line passing through the midpoint of the top side and the bottom side as the axis of symmetry, and both the first side and the second side are stepped.
  • the adjustment part (52, 52') is provided in the array substrate, and the side of the first section of the adjustment part (52, 52') is stepped, the anode of the blue light emitting device B is adjusting Gentle slopes are formed on the stepped sides of the portion (52, 52′), thereby increasing the amount of blue light emitted by the anode of the blue light-emitting device B in a non-vertical direction, thereby improving the matching of viewing angle characteristics with red and green light, and solving the problem The problem of white light color cast is solved.
  • the area ratio of the anode slope region P2 can be effectively increased, so that a finer white light color shift can be achieved. adjust.
  • the embodiment of the present disclosure is described by setting two adjustment parts (52, 52') under the blue light emitting device B as an example.
  • a plurality of adjustment parts are provided to improve color shift, for example, three or four adjustment parts may be provided under the blue light-emitting device B.
  • FIG. When multiple adjustment parts are arranged under the blue light-emitting device B, the distance between each adjustment part is the same, and the size and shape of each adjustment part are the same, so as to ensure the uniformity of display.
  • one or more adjustment parts can be provided under the blue light emitting device B and the red light emitting device R at the same time, by designing the number of steps of the stepped sides of the adjustment parts under the blue light emitting device B and the red light emitting device R, As well as the width and height of each step, the amount of reflection of non-perpendicular light is adjusted, thereby improving the brightness ratio of the green, red, and blue light-emitting devices, thereby improving the display effect.
  • the adjustment part of the array substrate includes a plurality of sub-adjustment structures stacked in sequence along the direction away from the base, and the area of each sub-adjustment structure decreases sequentially along the direction away from the base, so the sub-adjustment structure can be adjusted along the direction away from the base.
  • the directions are sequentially stacked to form an adjustment portion with stepped sides, so that the anodes of the light-emitting devices formed on the adjustment portion can form gentle slopes at the two sides of the adjustment portion with stepped sides.
  • FIG. 6 is a schematic cross-sectional structure diagram of another blue light-emitting device B shown in FIG. 2 along the D-D direction.
  • the adjusting part 62 includes a first sub-adjusting structure 621 and a second sub-adjusting structure 622, wherein the first sub-adjusting structure 621 is arranged on the base 61, and the second sub-adjusting structure 622 is arranged on the first sub-adjusting structure 622.
  • the structure 621 faces away from the side of the base 61 , and the area of the first sub-adjustment structure 621 is larger than that of the second sub-adjustment structure 622 , so that at least one side of the first section of the adjustment portion 62 is stepped.
  • a buffer layer 63 is provided on the side of the adjustment part 62 facing away from the substrate 61 , and an anode 64 of the blue light emitting device B is provided on the side of the buffer layer 63 facing away from the substrate 61 .
  • the materials of the first sub-regulation structure 621 and the second sub-regulation structure 622 are selected from inorganic materials. In this case, by selecting inorganic materials, the first sub-regulation structure 621 and the second sub-regulation structure The thickness of the structure 622 is made very thin, thereby reducing the thickness of the array substrate.
  • the etching patterns of the first sub-regulation structure 621 and the second sub-regulation structure 622 can be optimized in detail by designing an exposure mask, and the process is dry etching or wet etching.
  • the material of buffer layer 63 selects organic material, in this case, by selecting inorganic material to make, can control the shape of buffer layer 63 more easily, be convenient to make buffer layer 63 form at the adjustment part 62 place that side is stepped Gentle slope, and by selecting organic materials, the buffer layer 63 above the adjustment part can be prevented from breaking, and the tip discharge of the adjustment part 62 can be prevented.
  • the manufacturing method of the buffer layer 63 includes but not limited to PECVD, gluing, etching and other methods.
  • the shape of the anode 64 in this embodiment can be realized by adjusting the thickness, width and edge angle of the first sub-regulation structure 621, the second sub-regulation structure 622 and the buffer layer 63, realizing the anode flat area P1 and the anode slope area P2 range adjustment.
  • the first sub-adjustment structure 621 and the second sub-adjustment structure 622 form the adjustment portion 62 with stepped sides, the reflection amount of non-perpendicular light can be adjusted, and the light intensity in each pixel unit can be improved.
  • the brightness ratio of different color light-emitting devices improves the display effect.
  • this embodiment is described by taking the material of the sub-regulation structure as an inorganic material and the material of the buffer layer as an example.
  • the materials of the sub-regulation structure and the buffer layer can also be other types of materials. No more examples are given here.
  • the embodiment of the present disclosure is described by taking the adjustment part as an example including two sub-regulation structures.
  • more sub-regulation structures can be provided to form the adjustment part according to the situation.
  • the area of the sub-regulation structures of each layer can be adjusted. and thickness to achieve different non-perpendicular light output, which will not be illustrated here one by one.
  • FIG. 7 is a schematic structural diagram of an array substrate provided by an embodiment of the present disclosure. As shown in FIG. 7, the array substrate is divided into a flat area Q1 and a bent area Q2, and a flat area Q1 and a bent area Q2. A plurality of light-emitting devices are arranged inside, and the anodes of at least part of the light-emitting devices located in the bending area Q2 cover at least one adjustment part in an orthographic projection on the substrate, that is, a side edge is provided under any anode of the light-emitting device in the bending area Q2. Stepped adjustment section.
  • the array substrate shown in FIG. 7 is used for a mobile phone with a waterfall screen.
  • the array substrate includes a flat area Q1 for the middle of the screen and a bending area Q2 arranged at the edge of the screen.
  • a plurality of light emitting devices are provided, including but not limited to green light emitting devices, red light emitting devices and blue light emitting devices.
  • one or more adjustment parts with stepped sides may be provided under the anode of the blue light-emitting device in the bending region Q2, and no adjustment part is provided in the flat region Q1.
  • the front display area of the screen can be changed without changing the adjustment part.
  • the non-perpendicular amount of light reflected by the anode of the blue light-emitting device in the bending area Q2 can be increased, thereby improving the brightness ratio of different color light-emitting devices in the bending area Q2 and improving the display effect.
  • an embodiment of the present disclosure provides a display device, which includes the array substrate provided in any one of the above embodiments.
  • the display device may be an electronic device with a display panel, such as a mobile phone, a tablet computer, an electronic watch, a sports bracelet, a notebook computer, etc., including a waterfall screen and a folding screen.
  • a display panel such as a mobile phone, a tablet computer, an electronic watch, a sports bracelet, a notebook computer, etc., including a waterfall screen and a folding screen.

Abstract

本公开提供一种阵列基板和显示装置，属于显示技术领域。本公开的阵列基板包括：包括阵列基板，其包括：基底；至少一个调节部，设置在基底上，调节部具有沿垂直于基底方向的第一截面；第一截面包括顶边和底边以及第一侧边和第二侧边；其中，底边相较顶边更靠近基底，且顶边在基底上的正投影位于底边在基底的正投影内；第一侧边和第二侧边中的至少一者呈阶梯状；缓冲层，设置在调节部背离基底的一侧；多个发光器件，设置在缓冲层背离基底的一侧，发光器件包括沿背离基底方向依次设置的第一电极、发光层、第二电极；且至少部分发光器件的第一电极在基底上的正投影至少覆盖一个调节部在基底上的正投影。

Description

阵列基板和显示装置 技术领域
本公开属于显示技术领域，具体涉及一种阵列基板和显示装置。
背景技术
有机发光二极管(Organic Light-Emitting Diode，OLED)，作为显示器件时具有宽视角、响应快、色域宽等优点，是下一代显示技术主流发展趋势。
但是，由于顶发光有机电致发光器件结构中，金属阴极与底部的反射阳极形成了谐振腔(微腔结构)，满足谐振条件的波长的光会由于相长干涉而得到加强，随着可视角的变化，光线经过金属阴极与底部的反射阳极之间的距离会随之改变，也就是说，不同视角下光线经过的路径不同，导致不同视角下的亮度和色度差异。因此，目前的顶发光有机电致发光器件存在严重的视角色偏的问题。
发明内容
本公开旨在至少解决现有技术中存在的技术问题之一，提供一种阵列基板和显示装置。
第一方面，本公开实施例提供一种阵列基板，其包括：
基底；
至少一个调节部，设置在所述基底上，所述调节部具有沿垂直于所述基底方向的第一截面；所述第一截面包括顶边和底边以及连接所述第一侧边和第二侧边；其中，所述底边相较所述顶边更靠近所述基底，且所述顶边在所述基底上的正投影位于所述底边在所述基底的正投影内；所述第一侧边和所述第二侧边中的至少一者呈阶梯状；
缓冲层，设置在所述调节部背离所述基底的一侧；
多个发光器件，设置在所述缓冲层背离所述基底的一侧，所述发光器件包括沿背离基底方向依次设置的第一电极、发光层、第二电极；且至少部分所述发光器件的所述第一电极在所述基底上的正投影至少覆盖一个所述调节部在所述基底上的正投影。
可选地，所述第一侧边和所述第二侧边均呈阶梯状，且以贯穿所述顶边和所述底边中点的直线为对称轴，所述第一侧边和所述第二侧边呈对称设置。
可选地，所述第调节部包括沿背离所述基底方向依次叠层设置的子调节结构，且各所述子调节结构的面积沿背离所述基底方向依次减小。
可选地，所述子调节结构的层数为2层。
可选地，所述子调节结构的材料包括无机材料。
可选地，所述多个发光器件形成多个像素单元，每个所述像素单元中的所述发光器件包括红色发光器件、绿色发光器件和蓝色发光器件；所述蓝色发光器件的第一电极在所述基底上正投影覆盖至少一个所述调节部。
可选地，至少部分所述发光器件的第一电极覆盖多个间隔设置所述调节部。
可选地，所述阵列基板划分为平坦区和弯折区；位于所述弯折区的至少部分所述发光器件的第一电极在所述基底上正投影覆盖至少一个所述调节部。
可选地，所述缓冲层的材料为有机材料。
第二方面，本公开实施例提供一种显示装置，其包括上述的阵列基板。
附图说明
图1为一种示例性的阵列基板的出光示意图；
图2为本公开实施例提供的一种阵列基板的结构示意图；
图3为图2所示的蓝色发光器件沿D-D方向的剖面结构示意图；
图4为本公开实施例提供的另一种阵列基板的结构示意图；
图5为图4所示的蓝色发光器件沿D-D方向的剖面结构示意图；
图6为图2所示的另一种蓝色发光器件沿D-D方向的剖面结构示意图；
图7为本公开实施例提供的一种阵列基板的结构示意图。
具体实施方式
为使本领域技术人员更好地理解本公开的技术方案，下面结合附图和具体实施方式对本公开作进一步详细描述。
除非另外定义，本公开使用的技术术语或者科学术语应当为本公开所属领域内具有一般技能的人士所理解的通常意义。本公开中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的组成部分。同样，“一个”、“一”或者“该”等类似词语也不表示数量限制，而是表示存在至少一个。“包括”或者“包含”等类似的词语意指出现该词前面的元件或者物件涵盖出现在该词后面列举的元件或者物件及其等同，而不排除其他元件或者物件。“连接”或者“相连”等类似的词语并非限定于物理的或者机械的连接，而是可以包括电性的连接，不管是直接的还是间接的。“上”、“下”、“左”、“右”等仅用于表示相对位置关系，当被描述对象的绝对位置改善后，则该相对位置关系也可能相应地改善。
在对本公开实施例描述之前，首先对本公开实施例中所采用的发光器件进行说明。在本公开实施例中发光器件包括但不限于有机电致发光器件OLED，以下均以发光器件为OLED为例说明。OLED包括沿着背离基底的方向依次设置的第一电极、有机功能层和第二电极。其中，第一电极可以为发光器件的阳极，其可以采用两层氧化铟锡(ITO)之间夹导电率较好的金属材料，例如，其金属材料可以为铝(Al)、银(Ag)、钛(Ti)、钼(Mo) 中的任意一种，或者上述任意多种材料的合金。有机功能层可以包括发光层，该发光层的材料包括小分子有机材料或聚合物分子有机材料，可以为荧光发光材料或磷光发光材料，可以发红光、绿光、蓝光，或可以发白光等；并且，根据实际不同需要，在不同的示例中，有机功能层还可以进一步包括电子注入层、电子传输层、空穴注入层、空穴传输层等功能层。第二电极覆盖有机功能层，其极性可以与第一电极的极性相反，可以为发光器件的阴极，此阴极可为锂(Li)、铝(Al)、镁(Mg)、银(Ag)等金属材料中的任意一种，或者上述任意多种材料的合金制作而成。
OLED按照光的出射方向分为顶发射型和底发射型。其中，底发射型的OLED的光经由基底一侧射出，该种结构的OLED的阴极通常采用金属材料，作为反射电极。顶发射型的OLED的光则是由阴极射出，该种结构的OLED的阴极虽然也可以采用金属材料，但需要蒸镀较薄的金属材料作为阴极，以使光线可以从阴极射出，相应的，该种结构的OLED的阳极可以是反射阳极，也可以是在阳极靠近基底的一侧设置反射层，以使光线经由阴极射出。下述实施例中的OLED均是以采用顶发射型的OLED，且阳极为反射阳极为例进行说明。
图1为一种示例性的阵列基板的出光示意图，如图1所示，阵列基板包括基底，设置在基底上的多个像素单元，每个像素单元均包括多个OLED。其中，在下述描述中以像素单元包括蓝光OLED、绿光OLED和红光OLED为例进行说明。每个OLED的阳极、阴极和发光层三者共同组成一个微腔结构，在这个微腔结构中，发光层发出的光会在微腔中来回多次反射，最终从阳极的出光侧射出。以基底所在平面为基准，各OLED器件的阳极出光侧射出的光的方向几乎都是垂直方向，非垂直方向的出光量少。蓝光OLED所发出的光的亮度相较红色OLED或者绿色OLED所发出的光的亮度而言，随着可视角的增大衰减的更快，也即蓝色OLED的非垂直方向的出光量最少，因 此，导致不同位置的像素单元中绿光OLED、红光OLED、蓝光OLED三者发出的光在混光后出现一定的色偏。
为解决上述技术问题，在本公开实施例中提供如下技术方案：
需要说明的是，下述各实施中的附图中仅示出了发光器件的阳极结构，发光层和阴极结构并没有示意出，但本领域技术人员应该知道在基底上依次形成发光器件的阳极、有机功能层和阴极均是已知的现有技术，在此不再一一描述。
第一方面，本公开实施例提供的一种阵列基板，图2为本公开实施例提供的一种阵列基板的结构示意图，如图2所示，该阵列基板包括设置在基底(图中未示出)上的多个呈阵列排布的像素单元，每个像素单元A均包括绿色发光器件G、红色发光器件R和蓝色发光器件B。例如：每个像素单元A中包括1个红色发光器件R、2个绿色发光器件G和1个蓝色发光器件B。当然，每个像素单元中的红色发光器件R、绿色发光器件G和蓝色发光器件B的数量也可以均为1个。图3为图2所示的蓝色发光器件沿D-D方向的剖面结构示意图。如图3所示，调节部32设置在基底31上，缓冲层33设置在调节部32背离基底31的一侧，蓝色发光器件的阳极34设置在缓冲层33背离基底31的一侧，并且蓝色发光器件的阳极34在基底31上的正投影覆盖调节部32在基底上的正投影。
需要说明的是，红色发光器件R包括但不限于有机电致发光器件OLED，绿色发光器件G包括但不限于有机电致发光器件OLED，蓝色发光器件B包括但不限于有机电致发光器件OLED，本实施例中以红色发光器件R、绿色发光器件G和蓝色发光器件B均为OLED为例说明。
在本实施例中，调节部32具有沿垂直于基底31方向的第一截面，第一截面包括顶边和底边以及第一侧边和第二侧边，其中，底边相较顶边更靠近基底31，且顶边在基底31上的正投影位于底边在基底31的正投影内，并且 第一侧边和第二侧边中的至少一者呈阶梯状。在该种情况下，以基底31为参考平面，形成在调节部32上的蓝色发光器件B的阳极不仅包括具有平坦的顶面(图3中P1所示的区域)，而且还具有阶梯状的侧面(图3中P2所示的区域)，通过设计阶梯状侧面的阶梯数量，以及各个阶梯的宽度和高度，对非垂直光的反射量进行调节，从而改善各个像素单元中的不同颜色发光器件的亮度比，进而提高显示效果。
需要说明的是，图3中是以调节部32的第一截面的两个侧边均呈阶梯状为例进行说明的。当然，只要调节部32的中的至少一个侧边呈阶梯状即在本公开的保护范围内。
在一些实施例中，如图3所示，调节部32的第一截面的第一侧边和第二侧边以贯穿顶边和底边中点的直线为对称轴呈对称设置，并且第一侧边和第二侧边均呈阶梯状，且形貌相同。在本公开实施例中，通过将调节部32的第一侧边和第二侧边以贯穿顶边和底边中点的直线为对称轴呈对称设置，保证了调节部32侧面各个位置所反射的出光量均一，从而保证了显示的均一性。
在一些实施例中，图4为本公开实施例提供的另一种阵列基板的结构示意图，如图4所示，该阵列基板包括设置在基底(图中未示出)上的多个呈阵列排布的像素单元A，每个像素单元均包括绿色发光器件G、红色发光器件R和蓝色发光器件B。例如：每个像素单元A中包括1个红色发光器件R、2个绿色发光器件G和1个蓝色发光器件B。当然，每个像素单元中的红色发光器件R、绿色发光器件G和蓝色发光器件B的数量也可以均为1个。图5为图4所示的蓝色发光器件B沿D-D方向的剖面结构示意图。如图5所示，该阵列基板的任一蓝色发光器件B靠近基底51的一侧均设置有两个调节部，分别用第一调节部52和第二调节部52′表示，缓冲层53设置在第一调节部52和第二调节部52′背离基底的一侧；蓝色发光器件B的阳极54设置在缓 冲层53背离基底的一侧，并且蓝色发光器件B的阳极54在基底51上的正投影覆盖第一调节部52和第二调节部52′在基底51上的正投影。其中，第一调节部52和第二调节部52′间隔设置且结构相同，第一调节部52和第二调节部52′均具有沿垂直于基底51方向的第一截面，第一截面包括顶边和底边以及第一侧边和第二侧边，其中，底边相较顶边更靠近基底51，且顶边在基底51上的正投影位于底边在基底51的正投影内，第一侧边和第二侧边以贯穿顶边和底边中点的直线为对称轴呈对称设置，并且第一侧边和第二侧边均呈阶梯状。
在本实施例中，由于阵列基板中设置有调节部(52，52′)，且调节部(52，52′)的第一截面的侧边呈阶梯状，因此蓝光发光器件B的阳极在调节部(52，52′)呈阶梯状的侧边处形成缓坡，从而增加了蓝光发光器件B的阳极反射出的非垂直方向的蓝光出光量，进而改善了与红绿光的视角特性匹配，解决了白光色偏的问题。另外，通过在蓝色发光器件B的阳极的下方设置多个间隔设置调节部(52，52′)，可以有效增加阳极坡面区域P2的面积占比，因此可实现更为精细地白光色偏调节。
需要说明的是，本公开实施例是以蓝色发光器件B下设置两个调节部(52，52′)为例进行说明，可以理解的是，还可以根据具体情况在蓝色发光器件B下设置多个调节部以改善色偏，例如，可以在蓝色发光器件B下设置三个或者四个调节部。当蓝色发光器件B下设置多个调节部时，各个调节部之间的间距相同，且各个调节部的尺寸和形状相同，以保证显示的均一性。
还要说明的是，上述各实施例是以蓝色发光器件B下方设置一个或者多个调节部为例进行说明的，当然，本领域技术人员还可以根据需要有将一个或者多个调节部设置在任意颜色的OLED的阳极下方，将一个或者多个调节部设置在任意颜色的OLED的阳极下方均在本公开的保护范围之内。
示例的，例如可以在同时在蓝色发光器件B和红色发光器件R下方设 置一个或者多个调节部，通过设计蓝色发光器件B和红色发光器件R下方调节部的阶梯状侧面的阶梯数量，以及各个阶梯的宽度和高度，对非垂直光的反射量进行调节，从而改善绿红蓝三种发光器件的亮度比，进而提高显示效果。
在一些实施例中，阵列基板的调节部包括沿背离基底方向依次叠层设置的多个子调节结构，且各子调节结构的面积沿背离基底方向依次减小，因此可通过子调节结构沿背离基底方向依次叠层设置形成侧边呈阶梯状的调节部，进而可使生成在调节部上的发光器件的阳极在调节部呈阶梯状的两个侧边处形成缓坡。
示例的，图6为图2所示的另一种蓝色发光器件B沿D-D方向的剖面结构示意图。如图6所示，调节部62包括第一子调节结构621和第二子调节结构622，其中，第一子调节结构621设置在基底61上，第二子调节结构622设置在第一子调节结构621背离基底61的一侧，并且第一子调节结构621的面积大于所述第二子调节结构622的面积，以实现调节部62的第一截面的至少一个侧边呈阶梯状。调节部62背离基底61的一侧设置有缓冲层63，缓冲层63背离基底61的一侧设置有蓝光发光器件B的阳极64。在本实施例中，第一子调节结构621和第二子调节结构622的材料均选用无机材料，在该种情况下，通过选用无机材料，可以将第一子调节结构621和第二子调节结构622的厚度做得很薄，进而减少了阵列基板的厚度。第一子调节结构621和第二子调节结构622的刻蚀图案可以通过设计曝光Mask进行细节优化，工艺为干刻或者湿刻。
例如：缓冲层63的材料选用有机材料，在该种情况下，通过选用无机材料制作，能够更容易控制缓冲层63的形状，便于使缓冲层63在侧边呈阶梯状的调节部62处形成缓坡，并且通过选用有机材料，可防止调节部上方处的缓冲层63发生断裂，防止了调节部62的尖端放电。缓冲层63的制作 的方法包括但不限于PECVD、涂胶、刻蚀等方式。本实施例中的阳极64的形状可通过调节第一子调节结构621、第二子调节结构622以及缓冲层63的厚度、宽度和边缘角度来实现，实现了阳极平坦区P1和阳极坡面区P2的范围调节。在本实施例中，通过使第一子调节结构621和第二子调节结构622形成侧边呈阶梯状的调节部62，实现了对非垂直光的反射量进行调节，改善各个像素单元中的不同颜色发光器件的亮度比，提高了显示效果。
需要说明的是，本实施例是以子调节结构的材料为无机材料、缓冲层的材料为有机材料为例进行说明的，当然，子调节结构和缓冲层的材料还可以为其他类型的材料，在此不再一一举例说明。
另外，本公开实施例是以调节部包含两个子调节结构为例进行说明的，当然，还可以根据情况设置更多个子调节结构形成调节部，此时，可以调节各层的子调节结构的面积和厚度，实现不同的非垂直出光量，在此也不再一一举例说明。
在一些实施例中，图7为本公开实施例提供的一种阵列基板的结构示意图，如图7所示，阵列基板划分为平坦区Q1和弯折区Q2，平坦区Q1和弯折区Q2内设置有多个发光器件，位于弯折区Q2的至少部分发光器件的阳极在基底上正投影覆盖至少一个调节部，即在弯折区Q2的任意的发光器件的阳极下方设置有侧边呈阶梯状的调节部。
示例的，例如，图7所示的阵列基板用于瀑布屏手机，阵列基板包括用于屏幕中间的平坦区Q1以及设置在屏幕边缘的弯折区Q2，在平坦区Q1和弯折区Q2内设置有多个发光器件，发光器件包括但不限于绿色发光器件、红色发光器件和蓝色发光器件。在本实施例中，可在弯折区Q2的蓝色发光器件的阳极下方设置有一个或多个侧边呈阶梯状的调节部，在平坦区内Q1不设置调节部。由于在弯折区Q2的蓝色发光器件的阳极下方设置一个或多个侧边呈阶梯状的调节部，在平坦区Q1内不设置调节部，因此，可在不改 变屏幕正面显示区域的情况下，可使弯折区Q2中蓝色发光器件阳极反射的非垂直方向出光量增加，进而改善了弯折区Q2内不同颜色发光器件的亮度比，提高了显示效果。
第二方面，本公开实施例提供一种显示装置，该显示装置包括如上述任一实施例提供的阵列基板。该显示装置可以为含有瀑布屏、折叠屏等的手机、平板电脑、电子手表、运动手环、笔记本电脑等具有显示面板的电子设备。该显示装置具有的技术效果可参考上述对阵列基板的技术效果的论述，在此不再赘述。
可以理解的是，以上实施方式仅仅是为了说明本公开的原理而采用的示例性实施方式，然而本公开并不局限于此。对于本领域内的普通技术人员而言，在不脱离本公开的精神和实质的情况下，可以做出各种变型和改进，这些变型和改进也视为本公开的保护范围。

Claims (10)

  1. 一种阵列基板，其包括：
    基底；
    至少一个调节部，设置在所述基底上，所述调节部具有沿垂直于所述基底方向的第一截面；所述第一截面包括顶边和底边以及第一侧边和第二侧边；其中，所述底边相较所述顶边更靠近所述基底，且所述顶边在所述基底上的正投影位于所述底边在所述基底的正投影内；所述第一侧边和所述第二侧边中的至少一者呈阶梯状；
    缓冲层，设置在所述调节部背离所述基底的一侧；
    多个发光器件，设置在所述缓冲层背离所述基底的一侧，所述发光器件包括沿背离基底方向依次设置的第一电极、发光层、第二电极；且至少部分所述发光器件的所述第一电极在所述基底上的正投影至少覆盖一个所述调节部在所述基底上的正投影。
  2. 根据权利要求1所述的阵列基板，其中，所述第一侧边和所述第二侧边均呈阶梯状，且以贯穿所述顶边和所述底边中点的直线为对称轴，所述第一侧边和所述第二侧边呈对称设置。
  3. 根据权利要求1或2所述的阵列基板，其中，所述调节部包括沿背离所述基底方向依次叠层设置的子调节结构，且各所述子调节结构的面积沿背离所述基底方向依次减小。
  4. 根据权利要求3所述的阵列基板，其中，所述子调节结构的层数为2层。
  5. 根据权利要求3或4所述的阵列基板，其中，所述子调节结构的材料包括无机材料。
  6. 根据权利要求1-5中任一项所述的阵列基板，其中，所述多个发光器件形成多个像素单元，每个所述像素单元中的所述发光器件包括红色发光器件、绿色发光器件和蓝色发光器件；所述蓝色发光器件的第一电极在所述 基底上正投影覆盖至少一个所述调节部。
  7. 根据权利要求1-5中任一项所述的阵列基板，其中，至少部分所述发光器件的第一电极覆盖多个间隔设置的所述调节部。
  8. 根据权利要求1-5中任一项所述的阵列基板，其中，所述阵列基板划分为平坦区和弯折区；位于所述弯折区的至少部分所述发光器件的第一电极在所述基底上正投影覆盖至少一个所述调节部。
  9. 根据权利要求1-5中任一项所述的阵列基板，其中，所述缓冲层的材料为有机材料。
  10. 一种显示装置，其包括权利要求1-9中任一项所述的阵列基板。
PCT/CN2021/096060 2021-05-26 2021-05-26 阵列基板和显示装置 WO2022246689A1 (zh)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202330954U (zh) * 2011-11-23 2012-07-11 京东方科技集团股份有限公司 双视场液晶显示器和双视场电致发光显示器
CN108598122A (zh) * 2018-04-28 2018-09-28 京东方科技集团股份有限公司 显示基板及其制作方法、显示装置
CN112531129A (zh) * 2020-11-30 2021-03-19 京东方科技集团股份有限公司 显示基板及其制作方法、显示装置
CN214225625U (zh) * 2021-02-24 2021-09-17 昆山龙腾光电股份有限公司 一种显示装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202330954U (zh) * 2011-11-23 2012-07-11 京东方科技集团股份有限公司 双视场液晶显示器和双视场电致发光显示器
CN108598122A (zh) * 2018-04-28 2018-09-28 京东方科技集团股份有限公司 显示基板及其制作方法、显示装置
CN112531129A (zh) * 2020-11-30 2021-03-19 京东方科技集团股份有限公司 显示基板及其制作方法、显示装置
CN214225625U (zh) * 2021-02-24 2021-09-17 昆山龙腾光电股份有限公司 一种显示装置

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