WO2020029625A1 - 显示面板、显示装置以及显示面板的制作方法 - Google Patents
显示面板、显示装置以及显示面板的制作方法 Download PDFInfo
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- WO2020029625A1 WO2020029625A1 PCT/CN2019/085808 CN2019085808W WO2020029625A1 WO 2020029625 A1 WO2020029625 A1 WO 2020029625A1 CN 2019085808 W CN2019085808 W CN 2019085808W WO 2020029625 A1 WO2020029625 A1 WO 2020029625A1
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/122—Pixel-defining structures or layers, e.g. banks
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
- H10K50/844—Encapsulations
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- 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
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- 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
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- 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
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/121—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
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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
- H10K59/352—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels the areas of the RGB subpixels being different
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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
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
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- 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
- H10K77/111—Flexible substrates
Definitions
- the present disclosure relates to the field of display technology, and in particular, to an OLED display panel, a display device, and a method for manufacturing an OLED display panel.
- OLED Organic Light Emitting Diode
- OLED Organic Light Emitting Diode
- an embodiment of the present disclosure provides a display panel including: a display panel body; and a packaging layer, the packaging layer being disposed on the display panel body. From the center position of the display panel to the edge position of the display panel, the thickness of the packaging layer is increasing.
- the thickness of the encapsulation layer is increasing from a central position of the display panel to a plurality of points in an edge position direction of the display panel.
- the display panel body includes a base substrate, and one or more pixel units located on the base substrate.
- the display panel further includes a pixel definition layer, and the thickness of the pixel definition layer is increasing from the center position of the display panel to the edge position of the display panel. .
- the thickness of the pixel definition layer is increasing.
- the display panel further includes a spacer disposed on the pixel definition layer, and is arranged in a direction from a center position of the display panel to an edge position of the display panel.
- the thickness of the spacers on the pixel definition layer is equal or increasing.
- the spacers provided on the pixel definition layer is equal or increasing.
- the display panel further includes a base substrate and a pixel unit located on the base substrate, and the encapsulation layer covers the pixel unit and is horizontal at the display panel.
- a difference between thicknesses of combination layers of adjacent pixel units is ⁇ h 1 ;
- the combination layer includes the pixel definition layer and the spacer
- H 0 is the thickness of the combination layer of the pixel unit on the center line of the display panel perpendicular to the horizontal direction
- H n- 1 is the thickness of the combined layer of the pixel unit at the edge position in the horizontal direction of the display panel
- n is the number of pixel units in the horizontal direction of the display panel.
- the display panel further includes a base substrate and a pixel unit located on the base substrate, the packaging layer covers the pixel unit, and the display panel is vertical.
- the difference between the thicknesses of the combined layers of the adjacent pixel units is ⁇ h 2 ;
- the combination layer includes a pixel definition layer and the spacer
- H 0 is a thickness of the combination layer of the pixel unit on the center line of the display panel parallel to the horizontal direction
- H m-1 is The thickness of the combination layer of the pixel units at the edge position in the vertical direction of the display panel
- m is the number of pixel units in the vertical direction of the display panel.
- the value of ⁇ h 1 or ⁇ h 2 ranges from 5um to 20um.
- the center position is a pixel unit on the display panel, or a group of pixel units on the display panel.
- the thickness of the encapsulation layer covered on the group of pixel units at the center position is the same.
- the display panel is an OLED display panel.
- an embodiment of the present disclosure also provides an OLED display device including the display panel described in the first aspect.
- an embodiment of the present disclosure further provides a method for manufacturing an OLED display panel as described in the first aspect, including: fabricating an encapsulation layer such that it is moved from a center position of the display panel to a In the direction of the edge position of the display panel, the thickness of the packaging layer is increasing.
- the thickness of the encapsulation layer is increasing from a central position of the display panel to a plurality of points in an edge position direction of the display panel.
- the manufacturing method before the step of fabricating the packaging layer, further includes: fabricating a pixel definition layer so that the position from the center position of the display panel to the edge position of the display panel In the direction, the thickness of the pixel definition layer is increasing.
- the thickness of the pixel definition layer is increasing.
- the manufacturing method further includes: manufacturing a spacer on the pixel definition layer,
- the thickness of the spacers disposed on the pixel definition layer is equal to or increasing from the center position of the display panel to the edge position of the display panel.
- the spacers provided on the pixel definition layer is equal or increasing.
- FIG. 1A is a schematic diagram of a viewing angle change when a viewer watches a large-screen display panel (flat screen) in the related art
- FIG. 1B is a schematic diagram of a viewing angle change when a viewer watches a large-screen display panel (curved screen) in the related art
- FIG. 2 is a schematic structural diagram of an OLED display panel according to an embodiment of the present disclosure
- FIG. 3 is a schematic structural diagram of a part of an OLED display panel in an A-A cross section in FIG. 2;
- FIG. 4 is a schematic structural diagram of a part of an OLED display panel provided by an embodiment of the present disclosure.
- FIG. 5 is a schematic diagram of a viewing angle change when a viewer watches an OLED display panel provided by an embodiment of the present disclosure
- FIG. 6 is one of the flowcharts of a method for manufacturing an OLED display panel according to an embodiment of the present disclosure.
- FIG. 7 is a second flowchart of a method for manufacturing an OLED display panel according to an embodiment of the present disclosure.
- FIG. 1A and FIG. 1B are schematic diagrams of changes in viewing angle when a viewer watches a large-screen display panel in the related art.
- FIG. 1A shows a flat screen
- FIG. 1B shows a curved screen.
- the wavelength observed by the observer will shift, causing the viewer to see the center position and edge position color of the display panel Inconsistent, seriously affecting the viewing experience.
- an embodiment of the present disclosure provides an OLED display panel, which can effectively suppress the blue shift of the position of the light emitting peak pixels at the edges of the display panel.
- FIG. 2 is a schematic structural diagram of an OLED display panel according to an embodiment of the present disclosure.
- FIG. 3 is a schematic structural view of a part of the OLED display panel in the A-A cross section in FIG. 2.
- an embodiment of the present disclosure provides an OLED display panel including: a substrate substrate 1, a pixel unit 2 located on the substrate substrate 1, and a cover on the pixel unit 2. ⁇ ⁇ ⁇ 3 ⁇ The encapsulation layer 3.
- the thickness of the packaging layer 3 on the pixel unit 2 is increasing. That is, the thickness of the encapsulation layer 3 on the pixel unit 2 becomes thicker in the direction from the center position of the display panel to the edge position of the display panel.
- the thickness of the encapsulation layer 3 on the pixel unit 2 is increasing, that is, from the center position of the display panel to the edge position of the display panel, the thickness of the encapsulation layer has an increasing trend, and some adjacent pixel units are covered.
- the thickness of the encapsulation layer can be equal.
- the thickness of the encapsulation layer 3 covered on the pixel unit 2 at the center position of the display panel is the smallest. From the center position of the display panel to the edge position of the display panel, the encapsulation layer on the pixel unit 2 is the smallest.
- the thickness of 3 is sequentially increased in preset increments.
- the preset increment may be set to satisfy a linear, exponential, logarithmic, square, or square root relationship as required.
- the center position of the display panel is the position of the display panel passing through the center point of the display panel and perpendicular to the horizontal direction (such as I2 in FIG. 2).
- the thickness of the encapsulation layer 3 covered by the pixel unit 2 at the center position is the smallest, and the thickness of the encapsulation layer 3 covered by the pixel unit 2 at the edge position of the display panel is the largest.
- the encapsulation layer 3 is implemented using Thin-Film Encapsulation (TFE) technology.
- the center point of the display panel is not limited to the geometric center of the display panel, and the center line point of the display panel may be any point within a preset range of the geometric center of the display panel.
- the center point of the display panel can also be selected as the geometric center point of the display panel such as the center of gravity and the center of the circle.
- the center position may be one pixel unit 2 on the display panel or a group of pixel units 2 on the display panel.
- the center position of the display panel is the position of the display panel passing through the display panel center point a and parallel to the horizontal direction (such as I1 in FIG. 2).
- the thickness of the encapsulation layer 3 covered by the pixel unit 2 located at the center position is the smallest, and the pixel unit 2 located at the edge position of the display panel The thickness of the overlying encapsulation layer 3 is the largest.
- the center position of the display panel is the position where the straight line passing through the display panel center point and parallel to the vertical direction is located.
- the thickness of the encapsulation layer 3 covered by the pixel unit 2 at the center position is the smallest, and the thickness of the encapsulation layer 3 covered by the pixel unit 2 at the edge position of the display panel is the smallest. Maximum thickness.
- the thickness of the encapsulation layer 3 covered on each pixel unit 2 at the center position is the same.
- the center position may also be the center point of the display panel.
- the thickness of the encapsulation layer 3 on the pixel unit 2 is increasing in a direction radiating toward the edge of the display panel with the center position as a starting point.
- the thickness of the encapsulation layer 3 on the pixel unit 2 is increasing, increasing.
- the resonance cavity of the pixel unit 2 at the edge position of the display panel is long, which gradually increases the wavelength of the peak of the light emission spectrum of the organic light emitting diode, thereby effectively suppressing the blue shift phenomenon of the position of the light emission peak of the edge of the display panel.
- the display panel further includes a pixel definition layer 4 from a center position of the display panel to an edge position of the display panel.
- the thickness of the pixel definition layer 4 is increasing. Since the encapsulation layer 3 needs to completely cover the pixel definition layer 4 (the encapsulation layer 3 needs to cover the top of the pixel definition layer 4), the larger the thickness of the pixel definition layer 4, the larger the thickness of the encapsulation layer 3 also needs to be. The thickness is associated with the thickness of the pixel definition layer 4.
- FIG. 4 is a schematic plan view of a portion of a pixel unit.
- the pixel definition layer 4 is used to define the light emitting element 21, and reference numeral 41 is an opening of the pixel definition layer.
- the thickness of the pixel definition layer 4 of the pixel unit 2 at the center position of the display panel is the smallest. From the center position of the display panel to the edge position of the display panel, the thickness of the pixel definition layer 4 on the pixel unit 2 can be increased in preset increments. Increasing in sequence, so that the thickness of the encapsulation layer 3 covering the pixel unit 2 can be sequentially increased in accordance with a preset increment.
- the center position of the display panel is the position of a straight line passing through the display panel center point and perpendicular to the horizontal direction.
- the pixel definition layer 4 covered by the pixel unit 2 at the center position has the smallest thickness
- the pixel definition layer 4 of the pixel unit 2 at the edge position of the display panel has the largest thickness.
- the center position of the display panel is the position of the display panel that passes through the center point of the display panel and is parallel to the horizontal direction.
- the pixel definition layer 4 covered by the pixel unit 2 at the center position has the smallest thickness
- the pixel definition layer of the pixel unit 2 at the edge position of the display panel 4 has the largest thickness.
- the OLED display panel further includes a spacer 5 disposed on the pixel definition layer 4 from the center position of the display panel to the edge position of the display panel.
- the thickness of the spacers 5 disposed on the pixel defining layer 4 is equal or increasing.
- the thickness of the encapsulation layer 3 covering the pixel unit 2 is related to the thickness of the pixel definition layer 4.
- the thickness of the encapsulation layer 3 covering the pixel unit 2 is related to the thickness of the pixel definition layer 4 and the thickness of the spacers 5.
- the pixel unit 2 at the lowest position of the encapsulation layer only shows the pixel-defining layer 4.
- the pixel-defining layer 4 at this position may also cover the spacer 5.
- FIG. 5 it is a schematic diagram of a viewing angle change when a viewer watches an OLED display panel provided by an embodiment of the present disclosure.
- ⁇ h is a thickness difference between the combined layer on the pixel unit 2 at the center position and the combined layer on the pixel unit 2 at the edge position.
- the combination layer includes a pixel definition layer 4 and the spacer 5. Accordingly, the light-emitting center in FIG. 5 is the pixel unit.
- the thickness of the packaging layer 3 on the pixel unit 2 is increasing.
- a difference in thickness of a combination layer of the adjacent pixel units 2 is ⁇ h 1 ;
- the combination layer includes a pixel definition layer 4 and the spacer 5
- H 0 is a thickness of the combination layer of the pixel unit 2 on the center line of the display panel perpendicular to the horizontal direction
- H n -1 is the thickness of the combined layer of the pixel unit 2 at the edge position in the horizontal direction of the display panel
- n is the number of pixel units 2 in the horizontal direction of the display panel.
- the center line of the display panel that is perpendicular to the horizontal direction is a straight line that is perpendicular to the horizontal direction and passes through the center point of the display panel.
- the difference in thickness between the combined layers of adjacent pixel units 2 located on the same horizontal line is ⁇ h 1 .
- the thicknesses of the combined layers of the pixel units 2 located on the same vertical line are equal to reduce manufacturing complexity.
- a difference in thickness of a combination layer of the adjacent pixel units 2 is ⁇ h 2 ;
- the combination layer includes a pixel definition layer 4 and the spacer 5
- H 0 is a thickness of the combination layer of the pixel unit 2 on the center line of the display panel parallel to the horizontal direction
- H m -1 is the thickness of the combined layer of the pixel unit 2 at the edge position in the vertical direction of the display panel
- m is the number of pixel units 2 in the vertical direction of the display panel.
- the center line of the display panel parallel to the horizontal direction is a straight line parallel to the horizontal direction and passing through the center point of the display panel.
- the difference between the thicknesses of the combined layers of the adjacent pixel units 2 located on the same vertical line is ⁇ h 2 .
- the thicknesses of the combined layers of the pixel units 2 located on the same horizontal line are equal to reduce manufacturing complexity.
- L is related to the length of the optical cavity
- ⁇ is the observation angle
- ⁇ is the light emission wavelength of the organic light emitting device
- p is a positive integer.
- the thickness of the combined layer can be calculated, and then ⁇ h 1 or ⁇ h 2 can be calculated according to the combined layer thickness of the pixel unit 2 at the center and edge positions.
- the range of ⁇ h 1 or ⁇ h 2 is 5um-20um.
- the thickness of the combination layer increases from the center position to the edge position.
- the viewing angle ⁇ is constant, increasing the length of the optical cavity can cause the wavelength of resonance to move red. Therefore, the thickness of the encapsulation layer 3 which gradually increases from the center position to the edge position can achieve the purpose of suppressing the blue shift of the light emission peak of the edge pixels of the OLED display panel.
- an embodiment of the present disclosure also provides an OLED display device including the OLED display panel in the above embodiment.
- an embodiment of the present disclosure further provides a method for manufacturing an OLED display panel, including:
- an encapsulation layer 3 is fabricated so that the thickness of the encapsulation layer 3 is increasing from the center position of the display panel to the edge position of the display panel.
- a pixel unit 2 may be fabricated on the base substrate 1, and then an encapsulation layer 3 may be covered on the pixel unit 2 so as to move from the center position of the display panel to the edge position of the display panel.
- the thickness of the encapsulation layer 3 on the pixel unit 2 is increasing.
- the packaging layer 3 is manufactured so that the thickness of the packaging layer 3 is increasing from the center position of the display panel to the edge position of the display panel. , Can achieve the purpose of suppressing the blue-shift of the pixel peak of the edge of the OLED display panel.
- the method before step 101, the method further includes:
- a pixel definition layer 4 is manufactured so that the thickness of the pixel definition layer 4 is increasing from the center position of the display panel to the edge position of the display panel. Since the encapsulation layer 3 covered on the pixel unit 2 has a certain fluidity, the thickness of the pixel definition layer 4 in the pixel unit 2 can play an important supporting role on the thickness of the encapsulation layer 3 covered on the pixel unit 2. From the center position of the display panel to the edge position of the display panel, the thickness of the pixel definition layer 4 of the pixel unit 2 is increasing, so that the thickness of the encapsulation layer 3 covering the pixel unit 2 is increasing.
- the manufacturing method further includes step 101b:
- Photolithographic spacers 5 are formed on the pixel definition layer 4 so that the photolithography provided on the pixel definition layer 4 is from the center position of the display panel to the edge position of the display panel.
- the thickness of the spacers 5 is equal or increasing.
- the thickness of the encapsulation layer 3 covering the pixel unit 2 is related to the thickness of the pixel definition layer 4.
- the thickness of the encapsulation layer 3 covering the pixel unit 2 is related to the thickness of the pixel definition layer 4 and the thickness of the spacers 5. 5 will also support the encapsulation layer 3.
- the thickness of the encapsulation layer 3 covering the pixel unit 2 is determined by the thickness of both the pixel definition layer 4 and the spacer 5 to increase the resonant cavity length of the pixel unit 2 where the display panel is located at the edge position To gradually increase the wavelength of the peak of the light emission spectrum of the organic light emitting diode, thereby suppressing the blue shift of the position of the light emission peak of the pixel on the edge of the display panel.
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Abstract
一种OLED显示面板、显示装置及OLED显示面板的制作方法。该显示面板包括:显示面板本体以及封装层(3),所述封装层(3)设置在所述显示面板本体之上。从所述显示面板的中心位置向所述显示面板的边缘位置方向上,所述封装层(3)的厚度呈递增趋势。
Description
相关申请的交叉引用
本申请主张在2018年8月6日在中国提交的中国专利申请号No.201810886384.X的优先权,其全部内容通过引用包含于此。
本公开文本涉及显示技术领域,尤其涉及一种OLED显示面板、显示装置及OLED显示面板的制作方法。
OLED(Organic Light Emitting Diode,有机发光二极管)显示装置由于具有自发光、无需背光模组、对比度以及清晰度高、视角宽、全固化、适用于挠曲性面板、温度特性好、低功耗、响应速度快以及制造成本低等一系列优异特性,已经成为新一代平面显示装置的重点发展方向之一,因此日益受到越来越多的关注。
目前,OLED已经应用于移动手机并迅速得到产品的普及,应用OLED的电视也已经逐渐开始畅销。但应用OLED的电视在显示技术上的缺陷在于,当观看者视角由大屏显示面板的零视角中心向观测角度逐渐增大的边缘位置变化时,观测者观测到的波长会发生偏移,导致观看者会看见显示面板的中心位置与边缘位置颜色不一致,严重影响观看体验。
发明内容
在第一个方面中,本公开文本实施例提供了一种显示面板,包括:显示面板本体;以及封装层,所述封装层设置在所述显示面板本体之上。从所述显示面板的中心位置向所述显示面板的边缘位置方向上,所述封装层的厚度呈递增趋势。
根据本公开文本的一些可选实施例,从所述显示面板的中心位置向所述显示面板的边缘位置方向上的多个点处,所述封装层的厚度呈递增趋势。
根据本公开文本的一些可选实施例,所述显示面板本体包括衬底基板、以及位于所述衬底基板上的一个或多个像素单元。
根据本公开文本的一些可选实施例,所述显示面板还包括像素定义层,从所述显示面板的中心位置向所述显示面板的边缘位置方向上,所述像素定义层的厚度呈递增趋势。
根据本公开文本的一些可选实施例,从所述显示面板的中心位置向所述显示面板的边缘位置方向上的多个点处,所述像素定义层的厚度呈递增趋势。
根据本公开文本的一些可选实施例,所述显示面板还包括设置在所述像素定义层上的隔垫物,从所述显示面板的中心位置向所述显示面板的边缘位置方向上,设置在所述像素定义层上的所述隔垫物的厚度相等或呈递增趋势。
根据本公开文本的一些可选实施例,从所述显示面板的中心位置向所述显示面板的边缘位置方向上的多个点处,设置在所述像素定义层上的所述隔垫物的厚度相等或呈递增趋势。
根据本公开文本的一些可选实施例,所述显示面板还包括衬底基板以及位于所述衬底基板上的像素单元,所述封装层覆盖在所述像素单元上,在所述显示面板水平方向上,相邻所述像素单元的组合层的厚度之差为Δh
1;
Δh
1=|H
0-H
n-1|/2n
其中,所述组合层包括所述像素定义层和所述隔垫物,H
0为所述显示面板垂直于水平方向的中心线上的所述像素单元的所述组合层的厚度,H
n-1为所述显示面板水平方向上的边缘位置的所述像素单元的所述组合层的厚度,n为所述显示面板水平方向上的像素单元个数。
根据本公开文本的一些可选实施例,所述显示面板还包括衬底基板以及位于所述衬底基板上的像素单元,所述封装层覆盖在所述像素单元上,在所述显示面板竖直方向上,相邻所述像素单元的组合层的厚度之差为Δh
2;
Δh
2=|H
0-H
m-1|/2n
其中,所述组合层包括像素定义层和所述隔垫物,H
0为所述显示面板平行于水平方向的中心线上的所述像素单元的所述组合层的厚度,H
m-1为所述显示面板竖直方向上的边缘位置的所述像素单元的所述组合层的厚度,m为所述显示面板竖直方向上的像素单元个数。
根据本公开文本的一些可选实施例,Δh
1或Δh
2的取值范围为5um-20um。
根据本公开文本的一些可选实施例,所述中心位置是所述显示面板上的一个像素单元,或者是所述显示面板上的一组像素单元。
根据本公开文本的一些可选实施例,所述中心位置上的一组像素单元上覆盖的封装层的厚度相同。
根据本公开文本的一些可选实施例,所述显示面板是OLED显示面板。
在第二个方面中,本公开文本实施例还提供了一种OLED显示装置,包括在第一个方面中所述的显示面板。
在第二个方面中,本公开文本实施例还提供了一种如第一个方面中所述的OLED显示面板的制造方法,包括:制作封装层,使得从所述显示面板的中心位置向所述显示面板的边缘位置方向上,所述封装层的厚度呈递增趋势。
根据本公开文本的一些可选实施例,从所述显示面板的中心位置向所述显示面板的边缘位置方向上的多个点处,所述封装层的厚度呈递增趋势。
根据本公开文本的一些可选实施例,在所述制作封装层的步骤之前,所述制造方法还包括:制作像素定义层,使得从所述显示面板的中心位置向所述显示面板的边缘位置方向上,所述像素定义层的厚度呈递增趋势。
根据本公开文本的一些可选实施例,从所述显示面板的中心位置向所述显示面板的边缘位置方向上的多个点处,所述像素定义层的厚度呈递增趋势。
根据本公开文本的一些可选实施例,在所述制作像素定义层的步骤之后,所述制作封装层的步骤之前,所述制造方法还包括:在所述像素定义层上制作隔垫物,使得从所述显示面板的中心位置向所述显示面板的边缘位置方向上,设置在所述像素定义层上的所述隔垫物的厚度相等或呈递增趋势。
根据本公开文本的一些可选实施例,从所述显示面板的中心位置向所述显示面板的边缘位置方向上的多个点处,设置在所述像素定义层上的所述隔垫物的厚度相等或呈递增趋势。
为了更清楚地说明本公开文本实施例或相关技术中的技术方案,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 的附图仅仅是本公开文本的一些实施例,对于本领域普通技术人员来讲,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1A为相关技术中观看者观看大屏显示面板(平面屏)时视角变化的示意图;
图1B为相关技术中观看者观看大屏显示面板(曲面屏)时视角变化的示意图;
图2是本公开文本实施例提供的OLED显示面板的一结构示意图;
图3是图2中的A-A截面的部分OLED显示面板结构示意图;
图4是本公开文本实施例提供的OLED显示面板的部分结构示意图;
图5是观看者观看本公开文本实施例提供的OLED显示面板时视角变化的示意图;
图6是本公开文本实施例提供的一种OLED显示面板的制造方法的流程图之一;以及
图7是本公开文本实施例提供的一种OLED显示面板的制造方法的流程图之二。
为使本公开文本要解决的技术问题、技术方案和优点更加清楚,下面将结合附图及具体实施例进行详细描述。
图1A和图1B为相关技术中观看者观看大屏显示面板时视角变化的示意图。图1A所示为平面屏,图1B所示为曲面屏。当观看者视角由大屏显示面板的零视角中心向观测角度逐渐增大的边缘位置变化时,观测者观测到的波长会发生偏移,导致观看者会看见显示面板的中心位置与边缘位置颜色不一致,严重影响观看体验。基于此问题,本公开文本实施例提供一种OLED显示面板,可有效抑制显示面板边缘像素发光峰位置蓝移的现象。
图2是本公开文本实施例提供的OLED显示面板结构示意图。图3是图2中的A-A截面的部分OLED显示面板结构示意图。如图2、图3所示,本公开文本实施例提供一种OLED显示面板,包括:衬底基板1、位于所述衬底基板1上的像素单元2、以及覆盖在所述像素单元2上的封装层3。此外, 从所述显示面板的中心位置向所述显示面板的边缘位置方向上,所述像素单元2上的所述封装层3的厚度呈递增趋势。也就是说,所述像素单元2上的所述封装层3的厚度在从所述显示面板的中心位置向所述显示面板的边缘位置方向上越来越厚。
像素单元2上的封装层3的厚度呈递增趋势,即从所述显示面板的中心位置向所述显示面板的边缘位置方向上,封装层的厚度有增加的趋势,部分相邻像素单元上覆盖的封装层厚度可以相等。根据本公开文本一个可选实施例,显示面板中心位置处的像素单元2上覆盖的封装层3的厚度最小,从显示面板中心位置向显示面板的边缘位置方向上,像素单元2上的封装层3的厚度按照预设的增量依次增加。例如,该预设的增量可以根据需要被设置为满足线性、指数、对数、平方、或平方根等关系。例如,在显示面板的水平方向上,显示面板的中心位置为显示面板的经过显示面板中心点且与水平方向垂直的直线所在的位置(如图2中的I2)。同一水平线上的像素单元2中,中心位置处的像素单元2覆盖的封装层3的厚度最小,显示面板边缘位置处的像素单元2上覆盖的封装层3的厚度最大。封装层3采用薄膜封装(Thin-Film Encapsulation,简称TFE)技术实现。
在本实施例中,显示面板的中心点不局限于显示面板的几何中心,显示面板的中线点可为显示面板几何中心的预设范围内的任意点。另外,显示面板的中心点还可以被选择为重心、圆心等显示面板的几何中心点。另外,中心位置可为显示面板上的一个像素单元2,也可为显示面板上的一组像素单元2。
另外,在显示面板的竖直方向上,显示面板的中心位置为显示面板的经过显示面板中心点a且平行于水平方向的直线(如图2中的I1)所在的位置。对于同一竖直线(即与水平方向垂直的直线)上的多个像素单元2中,位于中心位置处的像素单元2覆盖的封装层3的厚度最小,位于显示面板边缘位置处的像素单元2上覆盖的封装层3的厚度最大。
同理,在显示面板的水平方向上,显示面板的中心位置为显示面板的经过显示面板中心点且平行于垂直方向的直线所在的位置。同一水平线(即与垂直方向垂直的直线)上的像素单元2中,中心位置处的像素单元2覆盖的 封装层3的厚度最小,显示面板边缘位置处的像素单元2上覆盖的封装层3的厚度最大。
根据本公开文本一个可选实施例,中心位置上的各像素单元2上覆盖的封装层3的厚度相同。
根据本公开文本一个可选实施例,中心位置也可为显示面板的中心点。此时,以中心位置为起点,向显示面板的边缘辐射的方向上,所述像素单元2上的所述封装层3的厚度呈递增趋势。
本公开文本实施例中的OLED显示面板,从所述显示面板的中心位置向所述显示面板的边缘位置方向上,所述像素单元2上的所述封装层3的厚度呈递增趋势,增加了显示面板位于边缘位置的像素单元2的共振腔长,使有机发光二极管的发光光谱峰值的波长逐渐增大,从而有效地抑制显示面板边缘像素发光峰位置蓝移的现象。
进一步的,如图3和图4所示,在本公开文本一个实施例中,上述显示面板还包括像素定义层4,从所述显示面板的中心位置向所述显示面板的边缘位置方向上,像素定义层4的厚度呈递增趋势。由于封装层3需要完全覆盖像素定义层4(封装层3需要覆盖像素定义层4的顶部),因此,像素定义层4的厚度越大,封装层3的厚度也需要越大,封装层3的厚度与像素定义层4的厚度相关联。
如图4所示,图4中为部分像素单元的俯视结构示意图。其中,像素定义层4用于限定发光元件21,标号41为像素定义层的开孔。
显示面板中心位置处的像素单元2的像素定义层4的厚度最小,从显示面板中心位置向显示面板的边缘位置方向上,像素单元2上的像素定义层4的厚度可按照预设的增量依次增加,从而使得覆盖在像素单元2上的封装层3的厚度可按照预设的增量依次增加。例如,在显示面板的水平方向上,显示面板的中心位置为显示面板的经过显示面板中心点且与水平方向垂直的直线所在的位置。同一水平线上的像素单元2中,中心位置处的像素单元2覆盖的像素定义层4的厚度最小,显示面板边缘位置处的像素单元2的像素定义层4的厚度最大。
另外,在显示面板的竖直方向上,显示面板的中心位置为显示面板的经 过显示面板中心点且平行于水平方向的直线所在的位置。同一竖直线(即与水平方向垂直的直线)上的像素单元2中,中心位置处的像素单元2覆盖的像素定义层4的厚度最小,显示面板边缘位置处的像素单元2的像素定义层4的厚度最大。
进一步的,在本公开文本另一个实施例中,OLED显示面板还包括设置在所述像素定义层4上的隔垫物5,从所述显示面板的中心位置向所述显示面板的边缘位置方向上,设置在所述像素定义层4上的所述隔垫物5的厚度相等或呈递增趋势。
当各像素定义层4上设置的隔垫物5的厚度相等时,覆盖在像素单元2上的封装层3的厚度跟像素定义层4的厚度相关联。当各像素定义层4上设置的隔垫物5的厚度不相等时,覆盖在像素单元2上的封装层3的厚度由像素定义层4的厚度和隔垫物5的厚度相关联。如图2所示,封装层最低处的像素单元2只示出了像素限定层4,该位置处的像素限定层4还可覆盖隔垫物5。
如图5所示,为观看者观看本公开文本实施例提供的OLED显示面板时视角变化的示意图。其中,Δh为中心位置处像素单元2上的组合层与边缘位置处像素单元2上的组合层之间的厚度差。这里,作为一个非限定示例,组合层包括像素定义层4和所述隔垫物5。相应的,图5中的发光中心即为像素单元。
所述显示面板的中心位置向所述显示面板的边缘位置方向上,所述像素单元2上的所述封装层3的厚度呈递增趋势。
进一步的,在本公开文本的又一个实施例中,在所述显示面板水平方向上,相邻所述像素单元2的组合层的厚度之差为Δh
1;
Δh
1=|H
0-H
n-1|/2n
其中,所述组合层包括像素定义层4和所述隔垫物5,H
0为所述显示面板垂直于水平方向的中心线上的所述像素单元2的所述组合层的厚度,H
n-1为所述显示面板水平方向上的边缘位置的所述像素单元2的所述组合层的厚度,n为所述显示面板水平方向上的像素单元2的数目。
具体的,显示面板垂直于水平方向的中心线即垂直于水平方向且通过显 示面板中心点的直线。位于同一水平线上的相邻像素单元2的组合层的厚度之差为Δh
1。根据本公开文本一个可选实施例,位于同一竖直线上的各像素单元2的组合层的厚度相等,以减小制作复杂度。
进一步的,在本公开文本一个实施例中,在所述显示面板竖直方向上,相邻所述像素单元2的组合层的厚度之差为Δh
2;
Δh
2=|H
0-H
m-1|/2n
其中,所述组合层包括像素定义层4和所述隔垫物5,H
0为所述显示面板平行于水平方向的中心线上的所述像素单元2的所述组合层的厚度,H
m-1为所述显示面板竖直方向上的边缘位置的所述像素单元2的所述组合层的厚度,m为所述显示面板竖直方向上的像素单元2的数目。
具体的,显示面板平行于水平方向的中心线即平行于水平方向且通过显示面板中心点的直线。此时,位于同一竖直线上的相邻像素单元2的组合层的厚度之差为Δh
2。根据本公开文本一个可选实施例,位于同一水平线上的各像素单元2的组合层的厚度相等,以减小制作复杂度。
一般的,显示面板的尺寸为55inch到110inch,假设观测距离为5-7米,根据公式Lcosα=pλ,其中,L跟光学腔长有关,α为观测角度,λ为有机发光器件的发光波长,p为正整数,通过像素单元2的光学腔长,可计算获得组合层的厚度,然后根据中心位置与边缘位置的像素单元2的组合层厚度,可计算获得Δh
1或Δh
2。根据本公开文本一个可选实施例,Δh
1或Δh
2的范围为5um-20um。
本公开文本实施例提供的OLED显示面板,组合层的厚度由中心位置向边缘位置递增。当观看角度α不变时,增加光学腔长可以使得共振的波长红移动,因此从中心位置向边缘位置逐渐增加的封装层3的厚度可以达到抑制OLED显示面板边缘像素发光峰蓝移的目的。
另外,本公开文本实施例还提供一种OLED显示装置,包括上述实施例中的OLED显示面板。
如图6所示,本公开文本实施例还提供一种OLED显示面板的制造方法,包括:
步骤101,制作封装层3,使得从所述显示面板的中心位置向所述显示面 板的边缘位置方向上,所述封装层3的厚度呈递增趋势。
在本步骤之前,可在衬底基板1上制作像素单元2,然后在所述像素单元2上覆盖封装层3,使得从所述显示面板的中心位置向所述显示面板的边缘位置方向上,所述像素单元2上的所述封装层3的厚度呈递增趋势。
根据本公开文本实施例提供的OLED显示面板的制造方法,制作封装层3,使得从所述显示面板的中心位置向所述显示面板的边缘位置方向上,所述封装层3的厚度呈递增趋势,可以达到抑制OLED显示面板边缘像素发光峰蓝移的目的。
进一步的,如图7所示,在本公开文本一个实施例中,在步骤101之前,还包括:
步骤101a,制作像素定义层4,使得从所述显示面板的中心位置向所述显示面板的边缘位置方向上,像素定义层4的厚度呈递增趋势。由于覆盖在像素单元2上的封装层3具有一定的流动性,像素单元2中像素定义层4的厚度可对覆盖在像素单元2上的封装层3的厚度起到重要的支撑作用。从显示面板的中心位置向显示面板的边缘位置方向上,像素单元2的像素定义层4的厚度呈递增趋势,可使得覆盖在像素单元2上的封装层3的厚度呈递增趋势。
进一步的,如图7所示,在步骤101a之后,在步骤101之前,所述制造方法还包括步骤101b:
在所述像素定义层4上制作光刻隔垫物5,使得从所述显示面板的中心位置向所述显示面板的边缘位置方向上,设置在所述像素定义层4上的所述光刻隔垫物5的厚度相等或呈递增趋势。
当各像素定义层4上设置的隔垫物5的厚度相等时,覆盖在像素单元2上的封装层3的厚度跟像素定义层4的厚度有关。当各像素定义层4上设置的隔垫物5的厚度不相等时,覆盖在像素单元2上的封装层3的厚度由像素定义层4的厚度和隔垫物5的厚度有关,隔垫物5也会对封装层3起到支撑作用。
在本实施例中,通过像素定义层4和隔垫物5两者的厚度来决定覆盖在像素单元2上的封装层3的厚度,以增加显示面板位于边缘位置的像素单元 2的共振腔长,使有机发光二极管的发光光谱峰值的波长逐渐增大,从而抑制显示面板边缘像素发光峰位置蓝移的现象。
以上所述是本公开文本的一些可选实施方式,应当指出,对于本技术领域的普通技术人员来说,在不脱离本公开文本所述原理的前提下,还可以作出若干改进和润饰,这些改进和润饰也应视为本公开文本的保护范围。
Claims (20)
- 一种显示面板,包括:显示面板本体;以及封装层,所述封装层设置在所述显示面板本体之上,其中,从所述显示面板的中心位置向所述显示面板的边缘位置方向上,所述封装层的厚度呈递增趋势。
- 根据权利要求1所述的显示面板,其中,从所述显示面板的中心位置向所述显示面板的边缘位置方向上的多个点处,所述封装层的厚度呈递增趋势。
- 根据权利要求1或2所述的显示面板,其中,所述显示面板本体包括衬底基板、以及位于所述衬底基板上的一个或多个像素单元。
- 根据权利要求1至3中任一项所述的显示面板,其中,所述显示面板还包括像素定义层,从所述显示面板的中心位置向所述显示面板的边缘位置方向上,所述像素定义层的厚度呈递增趋势。
- 根据权利要求4所述的显示面板,其中,从所述显示面板的中心位置向所述显示面板的边缘位置方向上的多个点处,所述像素定义层的厚度呈递增趋势。
- 根据权利要求4或5所述的显示面板,其中,所述显示面板还包括设置在所述像素定义层上的隔垫物,从所述显示面板的中心位置向所述显示面板的边缘位置方向上,设置在所述像素定义层上的所述隔垫物的厚度相等或呈递增趋势。
- 根据权利要求6所述的显示面板,其中,从所述显示面板的中心位置向所述显示面板的边缘位置方向上的多个点处,设置在所述像素定义层上的所述隔垫物的厚度相等或呈递增趋势。
- 根据权利要求6或7所述的显示面板,其中,所述显示面板还包括衬底基板以及位于所述衬底基板上的像素单元,所述封装层覆盖在所述像素单元上,在所述显示面板水平方向上,相邻所述像素单元的组合层的厚度之差为Δh 1;Δh 1=|H 0-H n-1|/2n其中,所述组合层包括所述像素定义层和所述隔垫物,H 0为所述显示面板垂直于水平方向的中心线上的所述像素单元的所述组合层的厚度,H n-1为所述显示面板水平方向上的边缘位置的所述像素单元的所述组合层的厚度,n为所述显示面板水平方向上的像素单元个数。
- 根据权利要求6或7所述的显示面板,其中,所述显示面板还包括衬底基板以及位于所述衬底基板上的像素单元,所述封装层覆盖在所述像素单元上,在所述显示面板竖直方向上,相邻所述像素单元的组合层的厚度之差为Δh 2;Δh 2=|H 0-H m-1|/2n其中,所述组合层包括像素定义层和所述隔垫物,H 0为所述显示面板平行于水平方向的中心线上的所述像素单元的所述组合层的厚度,H m-1为所述显示面板竖直方向上的边缘位置的所述像素单元的所述组合层的厚度,m为所述显示面板竖直方向上的像素单元个数。
- 根据权利要求8或9所述的显示面板,其中,Δh 1或Δh 2的取值范围为5um-20um。
- 根据权利要求1至10中任一项所述的显示面板,其中,所述中心位置是所述显示面板上的一个像素单元,或者是所述显示面板上的一组像素单元。
- 根据权利要求11所述的显示面板,其中,所述中心位置上的一组像素单元上覆盖的封装层的厚度相同。
- 根据权利要求1至12中任一项所述的显示面板,其中,所述显示面板是OLED显示面板。
- 一种OLED显示装置,包括权利要求1至13中任一项所述的显示面板。
- 一种权利要求1至13中任一项所述的OLED显示面板的制造方法,包括:制作封装层,使得从所述显示面板的中心位置向所述显示面板的边缘位置方向上,所述封装层的厚度呈递增趋势。
- 根据权利要求15所述的制造方法,其中,从所述显示面板的中心位置向所述显示面板的边缘位置方向上的多个点处,所述封装层的厚度呈递增趋势。
- 根据权利要求15所述的制造方法,其中,在所述制作封装层的步骤之前,所述制造方法还包括:制作像素定义层,使得从所述显示面板的中心位置向所述显示面板的边缘位置方向上,所述像素定义层的厚度呈递增趋势。
- 根据权利要求17所述的制造方法,其中,从所述显示面板的中心位置向所述显示面板的边缘位置方向上的多个点处,所述像素定义层的厚度呈递增趋势。
- 根据权利要求17或18所述的制造方法,其中,在所述制作像素定义层的步骤之后,所述制作封装层的步骤之前,所述制造方法还包括:在所述像素定义层上制作隔垫物,使得从所述显示面板的中心位置向所述显示面板的边缘位置方向上,设置在所述像素定义层上的所述隔垫物的厚度相等或呈递增趋势。
- 根据权利要求19所述的制造方法,其中,从所述显示面板的中心位置向所述显示面板的边缘位置方向上的多个点处,设置在所述像素定义层上的所述隔垫物的厚度相等或呈递增趋势。
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| JP2020561925A JP7392239B2 (ja) | 2018-08-06 | 2019-05-07 | 表示パネル、表示装置及び表示パネルの作製方法 |
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| CN109830183B (zh) * | 2019-02-21 | 2021-06-18 | 上海天马有机发光显示技术有限公司 | 一种显示面板和显示装置 |
| CN110379934B (zh) * | 2019-07-12 | 2023-06-30 | 昆山国显光电有限公司 | 一种显示面板及显示装置 |
| CN110718639A (zh) * | 2019-09-25 | 2020-01-21 | 武汉华星光电半导体显示技术有限公司 | 显示面板及显示装置 |
| CN112038507B (zh) * | 2020-09-21 | 2023-04-25 | 云谷(固安)科技有限公司 | 显示面板的成型方法、显示面板及显示装置 |
| CN114695793B (zh) * | 2022-03-24 | 2025-11-21 | 广州华星光电半导体显示技术有限公司 | 显示面板 |
| CN116030720B (zh) * | 2022-12-30 | 2026-04-14 | 联想(北京)有限公司 | 显示装置、显示装置的安装方法及电子设备 |
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| JP7392239B2 (ja) | 2023-12-06 |
| CN109004013B (zh) | 2021-01-26 |
| US11075360B2 (en) | 2021-07-27 |
| US20200274095A1 (en) | 2020-08-27 |
| EP3836241A4 (en) | 2022-05-04 |
| CN109004013A (zh) | 2018-12-14 |
| EP3836241A1 (en) | 2021-06-16 |
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