WO2019033554A1 - 一种有机发光二极管显示器 - Google Patents

一种有机发光二极管显示器 Download PDF

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Publication number
WO2019033554A1
WO2019033554A1 PCT/CN2017/107828 CN2017107828W WO2019033554A1 WO 2019033554 A1 WO2019033554 A1 WO 2019033554A1 CN 2017107828 W CN2017107828 W CN 2017107828W WO 2019033554 A1 WO2019033554 A1 WO 2019033554A1
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WIPO (PCT)
Prior art keywords
cathode
voltage supply
layer
pixel column
emitting diode
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PCT/CN2017/107828
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English (en)
French (fr)
Inventor
曾维静
韩佰祥
Original Assignee
深圳市华星光电半导体显示技术有限公司
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Application filed by 深圳市华星光电半导体显示技术有限公司 filed Critical 深圳市华星光电半导体显示技术有限公司
Priority to US15/577,247 priority Critical patent/US10529944B2/en
Publication of WO2019033554A1 publication Critical patent/WO2019033554A1/zh

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Classifications

    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10OLED displays
    • H10K59/12Active-matrix OLED [AMOLED] displays
    • H10K59/121Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10OLED displays
    • H10K59/12Active-matrix OLED [AMOLED] displays
    • H10K59/122Pixel-defining structures or layers, e.g. banks
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10KORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10OLED displays
    • H10K59/12Active-matrix OLED [AMOLED] displays
    • H10K59/131Interconnections, e.g. wiring lines or terminals

Definitions

  • the present invention relates to the field of display technologies, and in particular, to an organic light emitting diode display.
  • OLED display panel with self-illumination, high brightness, wide viewing angle, high contrast, flexibility, low energy consumption, etc., is widely used in mobile phone screens, computer monitors, full color TVs and other products.
  • OLED display panel is self-illuminating
  • the OLED component is composed, and the organic light emitting diode is a current driving component, and the brightness of the panel is determined by the current passing through the OLED component.
  • OLED cathode is susceptible to IR drop The effect of (pressure drop) causes the current flowing through the OLED element to decrease, thereby affecting the display brightness; the larger the current, the more the brightness is reduced.
  • the existing The cathode layer 11 of the OLED panel is a whole layer structure, and the cathode layer 11 is input with the same cathode voltage VSS. That is, all pixels share a cathode, so the brightness of the pixel is affected by the overall current of the panel, which is affected by the full-surface current IR drop, that is, the IR drop of the existing panel is the same. Therefore, leading to the actual The gamma adjustment differs from the brightness of the panel, resulting in a color cast of the panel.
  • an organic light emitting diode display including:
  • the cathode layer includes a plurality of cathode lines, the cathode lines being spaced apart, wherein the organic light emitting diode display has a plurality of pixel columns; the cathode lines and the pixels Column correspondence;
  • the pixels in the same pixel column have the same color, and the cathode lines corresponding to the pixel columns of different colors are respectively connected to different cathode voltages;
  • the OLED display further includes a voltage supply module for providing a cathode voltage, the cathode line being coupled to the voltage supply module.
  • one end of the cathode line is connected to the voltage supply module.
  • both ends of the cathode line are connected to the voltage supply module.
  • the voltage supply module includes a first voltage supply unit for providing a first cathode voltage, a second voltage supply unit for providing a second cathode voltage, and a third voltage supply unit for providing a third cathode voltage;
  • the pixel column includes a red pixel column, a green pixel column, and a blue pixel column, and a cathode line corresponding to the red pixel column is connected to the first voltage supply unit, and a cathode line corresponding to the green pixel column and the first The two voltage supply units are connected, and the cathode line corresponding to the blue pixel column is connected to the third voltage supply unit.
  • the cathode line is formed by an evaporation process.
  • the OLED display further includes a switch array layer, the switch array layer being under the anode layer, and the switch array layer including a plurality of switching elements.
  • the OLED display further includes an encapsulation layer on the cathode layer.
  • the type of the organic light emitting diode display is a top emission type or a bottom emission type.
  • the invention provides an organic light emitting diode display, comprising:
  • the cathode layer includes a plurality of cathode lines, wherein the organic light emitting diode display has a plurality of pixel columns; the cathode lines correspond to the pixel columns;
  • the pixels in the same pixel column have the same color, and the cathode lines corresponding to the pixel columns of different colors are respectively connected to different cathode voltages.
  • the OLED display further includes a voltage supply module for providing a cathode voltage, the cathode line being coupled to the voltage supply module.
  • one end of the cathode line is connected to the voltage supply module.
  • both ends of the cathode line are connected to the voltage supply module.
  • the voltage supply module includes a first voltage supply unit for providing a first cathode voltage, a second voltage supply unit for providing a second cathode voltage, and a third voltage supply unit for providing a third cathode voltage;
  • the pixel column includes a red pixel column, a green pixel column, and a blue pixel column, and a cathode line corresponding to the red pixel column is connected to the first voltage supply unit, and a cathode line corresponding to the green pixel column and the first The two voltage supply units are connected, and the cathode line corresponding to the blue pixel column is connected to the third voltage supply unit.
  • the cathode lines are spaced apart from each other.
  • the cathode line is formed by an evaporation process.
  • the OLED display further includes a switch array layer, the switch array layer being under the anode layer, and the switch array layer including a plurality of switching elements.
  • the OLED display further includes an encapsulation layer on the cathode layer.
  • the type of the organic light emitting diode display is a top emission type or a bottom emission type.
  • the organic light emitting diode display of the invention By dividing the entire cathode layer into a plurality of cathode lines, the cathode lines correspond to the pixel columns, and the cathode lines corresponding to the pixel columns of different colors input different cathode voltages, thereby facilitating adjustment of the brightness of the panel to avoid color shift.
  • FIG. 1 is a schematic structural view of a cathode layer of a conventional organic light emitting diode display
  • FIG. 2 is a schematic structural view of a cathode layer of an organic light emitting diode display according to an embodiment of the invention
  • FIG 3 is a schematic structural view of a cathode layer of an organic light emitting diode display according to another embodiment of the present invention.
  • the organic light emitting diode display of the present invention has a plurality of pixel columns, and the pixels in the same pixel column have the same color, wherein the pixel columns include a red pixel column, a green pixel column, and a blue pixel column.
  • a cross-sectional structure of an organic light emitting diode display of the present invention includes an anode layer, an organic layer, and a cathode layer, the organic layer being on the anode layer, and the cathode layer being on the organic layer.
  • the cathode layer comprises a plurality of cathode lines 21-23
  • the cathode lines 21-23 Corresponding to the pixel column. That is, a column line is correspondingly arranged for each column of pixels.
  • the cathode lines are spaced apart, that is, the adjacent two cathode lines are spaced apart to input an independent cathode voltage.
  • the cathode line 21 corresponds to a red pixel column
  • the cathode line 22 corresponds to a green pixel column
  • the cathode line 23 Corresponds to the blue pixel column.
  • the cathode lines corresponding to the pixel columns of different colors are respectively connected to different cathode voltages.
  • the cathode line 21 corresponding to the red pixel column is connected to the first cathode voltage VSS1.
  • the cathode line 22 corresponding to the green pixel column is connected to the second cathode voltage VSS2.
  • the cathode line 23 corresponding to the blue pixel column is connected to the third cathode voltage VSS3.
  • the cathode line is formed by a mask evaporation process on the cathode material.
  • the organic light emitting diode display of the present invention further includes a voltage supply module 30, and the voltage supply module 30 Used to provide the cathode voltage.
  • the voltage supply module 30 includes a first voltage supply unit 31, a second voltage supply unit 32, and a third voltage supply unit 33.
  • the first voltage supply unit 31 For providing a first cathode voltage VSS1
  • the second voltage supply unit 32 is for supplying a second cathode voltage VSS2
  • the third voltage supply unit 33 is for providing a third cathode voltage VSS3 .
  • One end of the cathode line 21-23 is connected to the voltage supply module 30.
  • one end of the cathode line 21 corresponding to the red pixel column is connected to the first voltage supply unit 31 to access the first cathode voltage. VSS1.
  • One end of the cathode line 22 corresponding to the green pixel column is connected to the second voltage supply unit 32 to access the second cathode voltage VSS2.
  • the cathode line corresponding to the blue pixel column 23 One end is connected to the third voltage supply unit 33 to access the third cathode voltage VSS3.
  • the OLED display further includes a switch array layer, the switch array layer being under the anode layer, the switch array layer including a plurality of switching elements.
  • the OLED display further includes an encapsulation layer on the cathode layer.
  • the type of the organic light emitting diode display is a top emission type or a bottom emission type.
  • the pixel column may further include at least one of a white pixel column or a yellow pixel column.
  • the cathode line is also not limited to the cathode line described above.
  • the cathode layer of the entire layer is divided into a plurality of cathode lines, and corresponding Vss are input to the cathode lines corresponding to the pixel columns of different colors.
  • the brightness collected by the gamma adjustment of the panel brightness corresponds to the brightness actually illuminated by the panel, thereby avoiding chromatic aberration.
  • the organic light emitting diode display of the present invention has a plurality of pixel columns, the pixels of the same pixel column having the same color, wherein the pixel columns include a red pixel column, a green pixel column, and a blue pixel column.
  • the pixel columns include a red pixel column, a green pixel column, and a blue pixel column.
  • a white pixel column or a yellow pixel column can also be included.
  • a cross-sectional structure of an organic light emitting diode display of the present invention includes an anode layer, an organic layer, and a cathode layer, the organic layer being on the anode layer, and the cathode layer being on the organic layer.
  • the cathode layer comprises a plurality of cathode lines 21-23
  • the cathode lines 21-23 Corresponding to the pixel column. That is, a column line is correspondingly arranged for each column of pixels.
  • the cathode lines are spaced apart, that is, the adjacent two cathode lines are spaced apart to input an independent cathode voltage.
  • the cathode line 21 corresponds to a red pixel column
  • the cathode line 22 corresponds to a green pixel column
  • the cathode line 23 Corresponds to the blue pixel column.
  • the cathode lines corresponding to the pixel columns of different colors are respectively connected to different cathode voltages.
  • the cathode line 21 corresponding to the red pixel column is connected to the first cathode voltage VSS1.
  • the cathode line 22 corresponding to the green pixel column is connected to the second cathode voltage VSS2.
  • the cathode line 23 corresponding to the blue pixel column is connected to the third cathode voltage VSS3.
  • the cathode line is formed by a mask evaporation process on the cathode material.
  • the organic light emitting diode display of the present invention further includes a voltage supply module 30, and the voltage supply module 30 Used to provide the cathode voltage.
  • the voltage supply module 30 includes a first voltage supply unit 31, a second voltage supply unit 32, and a third voltage supply unit 33.
  • the first voltage supply unit 31 For providing a first cathode voltage VSS1
  • the second voltage supply unit 32 is for supplying a second cathode voltage VSS2
  • the third voltage supply unit 33 is for providing a third cathode voltage VSS3 .
  • Both ends of the cathode line 21-23 are connected to the voltage supply module 30.
  • both ends of the cathode line 21-23 are connected to the voltage supply module 30. Connected.
  • the upper and lower ends of the cathode line 21 corresponding to the red pixel column are connected to the first voltage supply unit 31 to access the first cathode voltage VSS1.
  • the cathode line corresponding to the green pixel column 22 Both the upper and lower ends are connected to the second voltage supply unit 32 to access the second cathode voltage VSS2.
  • the upper and lower ends of the cathode line 23 corresponding to the blue pixel column are all connected to the third voltage supply unit 33. Connect to connect to the third cathode voltage VSS3.
  • the OLED display further includes a switch array layer, the switch array layer being under the anode layer, the switch array layer including a plurality of switching elements.
  • the OLED display further includes an encapsulation layer on the cathode layer.
  • the type of the organic light emitting diode display is a top emission type or a bottom emission type.
  • the IR drop can be further reduced on the basis of the previous embodiment. To better prevent color shifts.
  • the organic light emitting diode display of the invention By dividing the entire cathode layer into a plurality of cathode lines, the cathode lines correspond to the pixel columns, and the cathode lines corresponding to the pixel columns of different colors input different cathode voltages, thereby facilitating adjustment of the brightness of the panel to avoid color shift.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Electroluminescent Light Sources (AREA)
  • Control Of El Displays (AREA)

Abstract

一种有机发光二极管显示器,该有机发光二极管显示器包括:阳极层;有机层,位于阳极层上;阴极层,位于有机层上;阴极层包括多条阴极线(21-23),其中有机发光二极管显示器具有多个像素列;阴极线(21-23)与像素列对应;同一像素列中的像素的颜色相同,不同颜色的像素列对应的阴极线(21-23)分别接入不同的阴极电压。

Description

一种有机发光二极管显示器 技术领域
本发明涉及显示技术领域,特别是涉及一种有机发光二极管显示器。
背景技术
有机发光二极管( Organic Light-Emitting Diode , OLED )显示面板,具备自发光、高亮度、宽视角、高对比度、可挠曲、低能耗等特性,因此被广泛应用在手机屏幕、电脑显示器、全彩电视等产品中。 OLED 显示面板由自发光的 OLED 元件组成,且有机发光二极管为电流驱动元件,面板的亮度由经过 OLED 元件的电流决定。 OLED 阴极容易受到 IR drop (压降)的影响,使得流过 OLED 元件的电流降低,从而影响显示亮度;电流越大,亮度降低越多。
面板亮度的 gamma 调节,需要收集不同颜色不同灰阶电压下的亮度,然后再进行对应灰阶的划分,即不同颜色的灰阶划分是由对应颜色像素的 IR drop 决定的。然而如图 1 所示,现有 OLED 面板的阴极层 11 为整层结构,该阴极层 11 输入同一个阴极电压 VSS ,也即所有像素都共用一个阴极,因此像素的亮度会受到面板整体电流的影响,受整面电流 IR drop 影响,也即现有面板的 IR drop 都相同。因此,导致实际 gamma 调节和面板的亮度产生差异,从而使得面板产生色偏。
因此,有必要提供一种有机发光二极管显示器,以解决现有技术所存在的问题。
技术问题
本发明的目的在于提供一种有机发光二极管显示器,能够避免显示器出现色偏。
技术解决方案
为解决上述技术问题,本发明提供一种有机发光二极管显示器, 其包括:
阳极层;
有机层,位于所述阳极层上;
阴极层,位于所述有机层上;所述阴极层包括多条阴极线,所述阴极线之间间隔设置,其中所述有机发光二极管显示器具有多个像素列;所述阴极线与所述像素列对应;
同一像素列中的像素的颜色相同,不同颜色的像素列对应的阴极线分别接入不同的阴极电压;
所述有机发光二极管显示器还包括电压提供模块,所述电压提供模块用于提供阴极电压,所述阴极线与所述电压提供模块连接。
在本发明的有机发光二极管显示器中, 所述阴极线的一端与所述电压提供模块连接。
在本发明的有机发光二极管显示器中, 所述阴极线的两端都与所述电压提供模块连接。
在本发明的有机发光二极管显示器中, 所述电压提供模块包括用于提供第一阴极电压的第一电压提供单元、用于提供第二阴极电压的第二电压提供单元以及用于提供第三阴极电压的第三电压提供单元;
所述像素列包括红色像素列、绿色像素列、蓝色像素列,所述红色像素列对应的阴极线与所述第一电压提供单元连接,所述绿色像素列对应的阴极线与所述第二电压提供单元连接,所述蓝色像素列对应的阴极线与所述第三电压提供单元连接。
在本发明的有机发光二极管显示器中, 所述阴极线是通过蒸镀工艺形成的。
在本发明的有机发光二极管显示器中, 所述有机发光二极管显示器还包括开关阵列层,所述开关阵列层位于所述阳极层下,所述开关阵列层包括多个开关元件。
在本发明的有机发光二极管显示器中, 所述有机发光二极管显示器还包括封装层,所述封装层位于所述阴极层上。
在本发明的有机发光二极管显示器中, 所述有机发光二极管显示器的类型为顶发射型或者底发射型。
本发明提供一种有机发光二极管显示器, 其包括:
阳极层;
有机层,位于所述阳极层上;
阴极层,位于所述有机层上;所述阴极层包括多条阴极线,其中所述有机发光二极管显示器具有多个像素列;所述阴极线与所述像素列对应;
同一像素列中的像素的颜色相同,不同颜色的像素列对应的阴极线分别接入不同的阴极电压。
在本发明的有机发光二极管显示器中, 所述有机发光二极管显示器还包括电压提供模块,所述电压提供模块用于提供阴极电压,所述阴极线与所述电压提供模块连接。
在本发明的有机发光二极管显示器中, 所述阴极线的一端与所述电压提供模块连接。
在本发明的有机发光二极管显示器中, 所述阴极线的两端都与所述电压提供模块连接。
在本发明的有机发光二极管显示器中, 所述电压提供模块包括用于提供第一阴极电压的第一电压提供单元、用于提供第二阴极电压的第二电压提供单元以及用于提供第三阴极电压的第三电压提供单元;
所述像素列包括红色像素列、绿色像素列、蓝色像素列,所述红色像素列对应的阴极线与所述第一电压提供单元连接,所述绿色像素列对应的阴极线与所述第二电压提供单元连接,所述蓝色像素列对应的阴极线与所述第三电压提供单元连接。
在本发明的有机发光二极管显示器中, 所述阴极线之间间隔设置。
在本发明的有机发光二极管显示器中, 所述阴极线是通过蒸镀工艺形成的。
在本发明的有机发光二极管显示器中, 所述有机发光二极管显示器还包括开关阵列层,所述开关阵列层位于所述阳极层下,所述开关阵列层包括多个开关元件。
在本发明的有机发光二极管显示器中, 所述有机发光二极管显示器还包括封装层,所述封装层位于所述阴极层上。
在本发明的有机发光二极管显示器中, 所述有机发光二极管显示器的类型为顶发射型或者底发射型。
有益效果
本发明的有机发光二极管显示器, 通过将整层阴极层划分为多条阴极线,阴极线与像素列对应,不同颜色的像素列对应的阴极线输入不同的阴极电压,从而便于对面板的亮度进行调节,避免出现色偏。
附图说明
图 1 为现有的有机发光二极管显示器的阴极层的结构示意图;
图 2 为本发明一实施例的有机发光二极管显示器的阴极层的结构示意图;
图 3 为本发明另一实施例的有机发光二极管显示器的阴极层的结构示意图。
本发明的最佳实施方式
以下各实施例的说明是参考附加的图式,用以例示本发明可用以实施的特定实施例。本发明所提到的方向用语,例如「上」、「下」、「前」、「后」、「左」、「右」、「内」、「外」、「侧面」等,仅是参考附加图式的方向。因此,使用的方向用语是用以说明及理解本发明,而非用以限制本发明。在图中,结构相似的单元是以相同标号表示。
在一实施例中,本发明的有机发光二极管显示器具有多个像素列,同一像素列中的像素的颜色相同,其中所述像素列包括红色像素列、绿色像素列以及蓝色像素列。
本发明的有机发光二极管显示器的剖面结构包括阳极层、有机层、阴极层,所述有机层位于所述阳极层上,所述阴极层位于所述有机层上。
如图 2 所示,其中所述阴极层包括多条阴极线 21-23 ,所述阴极线 21-23 与所述像素列对应。也即每列像素对应设置一条阴极线。其中所述阴极线之间间隔设置,也即相邻两条阴极线之间间隔设置,以便输入独立的阴极电压。
在一实施方式中,该阴极线 21 与红色像素列对应,该阴极线 22 与绿色像素列对应,该阴极线 23 与蓝色像素列对应。且不同颜色的像素列对应的阴极线分别接入不同的阴极电压。比如,所述红色像素列对应的阴极线 21 的接入第一阴极电压 VSS1 。所述绿色像素列对应的阴极线 22 接入第二阴极电压 VSS2 。所述蓝色像素列对应的阴极线 23 接入第三阴极电压 VSS3 。
所述阴极线是通过对阴极材料进行 mask 蒸镀工艺形成的。
本发明的有机发光二极管显示器还包括电压提供模块 30 ,所述电压提供模块 30 用于提供阴极电压。其中该电压提供模块 30 包括第一电压提供单元 31 、第二电压提供单元 32 以及第三电压提供单元 33 。该第一电压提供单元 31 用于提供第一阴极电压 VSS1 、该第二电压提供单元 32 用于提供第二阴极电压 VSS2 、该第三电压提供单元 33 用于提供第三阴极电压 VSS3 。
其中所述阴极线 21-23 的一端与所述电压提供模块 30 连接。
比如,所述红色像素列对应的阴极线 21 的一端与所述第一电压提供单元 31 连接,以接入第一阴极电压 VSS1 。所述绿色像素列对应的阴极线 22 的一端与所述第二电压提供单元 32 连接,以接入第二阴极电压 VSS2 。所述蓝色像素列对应的阴极线 23 的一端与所述第三电压提供单元 33 连接,以接入第三阴极电压 VSS3 。
所述有机发光二极管显示器还包括开关阵列层,所述开关阵列层位于所述阳极层下方,所述开关阵列层包括多个开关元件。
所述有机发光二极管显示器还包括封装层,所述封装层位于所述阴极层上。
所述有机发光二极管显示器的类型为顶发射型或者底发射型。
当然可以理解的,该像素列还可以包括白色像素列或者黄色像素列中的至少一种。该阴极线也不局限于上述的阴极线。
由于通过将整层的阴极层划分为多条阴极线,并向不同颜色的像素列对应的阴极线输入对应的 Vss ,使面板亮度的 gamma 调节时收集的亮度与面板实际点亮的亮度对应,从而避免色差的产生。
在另一实施例中,本发明的有机发光二极管显示器具有多个像素列,同一像素列中的像素的颜色相同,其中所述像素列包括红色像素列、绿色像素列以及蓝色像素列。当然可以理解的,还可以包括白色像素列或者黄色像素列中的至少一种。
本发明的有机发光二极管显示器的剖面结构包括阳极层、有机层、阴极层,所述有机层位于所述阳极层上,所述阴极层位于所述有机层上。
如图 3 所示,其中所述阴极层包括多条阴极线 21-23 ,所述阴极线 21-23 与所述像素列对应。也即每列像素对应设置一条阴极线。其中所述阴极线之间间隔设置,也即相邻两条阴极线之间间隔设置,以便输入独立的阴极电压。
具体地,该阴极线 21 与红色像素列对应,该阴极线 22 与绿色像素列对应,该阴极线 23 与蓝色像素列对应。且不同颜色的像素列对应的阴极线分别接入不同的阴极电压。比如,所述红色像素列对应的阴极线 21 的接入第一阴极电压 VSS1 。所述绿色像素列对应的阴极线 22 接入第二阴极电压 VSS2 。所述蓝色像素列对应的阴极线 23 接入第三阴极电压 VSS3 。
其中所述阴极线是通过对阴极材料进行 mask 蒸镀工艺形成的。
本发明的有机发光二极管显示器还包括电压提供模块 30 ,所述电压提供模块 30 用于提供阴极电压。其中该电压提供模块 30 包括第一电压提供单元 31 、第二电压提供单元 32 以及第三电压提供单元 33 。该第一电压提供单元 31 用于提供第一阴极电压 VSS1 、该第二电压提供单元 32 用于提供第二阴极电压 VSS2 、该第三电压提供单元 33 用于提供第三阴极电压 VSS3 。
所述阴极线 21-23 的两端都与所述电压提供模块 30 连接。
其中,如图 3 所示,所述阴极线 21-23 的两端都与所述电压提供模块 30 连接。其中,所述红色像素列对应的阴极线 21 的上下端都与所述第一电压提供单元 31 连接,以接入第一阴极电压 VSS1 。所述绿色像素列对应的阴极线 22 的上下端都与所述第二电压提供单元 32 连接,以接入第二阴极电压 VSS2 。所述蓝色像素列对应的阴极线 23 的上下端都与所述第三电压提供单元 33 连接,以接入第三阴极电压 VSS3 。
所述有机发光二极管显示器还包括开关阵列层,所述开关阵列层位于所述阳极层下方,所述开关阵列层包括多个开关元件。
所述有机发光二极管显示器还包括封装层,所述封装层位于所述阴极层上。
所述有机发光二极管显示器的类型为顶发射型或者底发射型。
由于本实施例中的阴极线的上下端同时输入阴极电压,在上一实施例的基础上,可以进一步减小 IR drop ,从而更好地防止出现色偏。
本发明的有机发光二极管显示器, 通过将整层阴极层划分为多条阴极线,阴极线与像素列对应,不同颜色的像素列对应的阴极线输入不同的阴极电压,从而便于对面板的亮度进行调节,避免出现色偏。
综上所述,虽然本发明已以优选实施例揭露如上,但上述优选实施例并非用以限制本发明,本领域的普通技术人员,在不脱离本发明的精神和范围内,均可作各种更动与润饰,因此本发明的保护范围以权利要求界定的范围为准。

Claims (18)

  1. 一种有机发光二极管显示器,其包括:
    阳极层;
    有机层,位于所述阳极层上;
    阴极层,位于所述有机层上;所述阴极层包括多条阴极线,所述阴极线之间间隔设置,其中所述有机发光二极管显示器具有多个像素列;所述阴极线与所述像素列对应;
    同一像素列中的像素的颜色相同,不同颜色的像素列对应的阴极线分别接入不同的阴极电压;
    所述有机发光二极管显示器还包括电压提供模块,所述电压提供模块用于提供阴极电压,所述阴极线与所述电压提供模块连接。
  2. 如权利要求 1 所述的有机发光二极管显示器,其中所述阴极线的一端与所述电压提供模块连接。
  3. 如权利要求 1 所述的有机发光二极管显示器,其中所述阴极线的两端都与所述电压提供模块连接。
  4. 如权利要求 1 所述的有机发光二极管显示器,其中所述电压提供模块包括用于提供第一阴极电压的第一电压提供单元、用于提供第二阴极电压的第二电压提供单元以及用于提供第三阴极电压的第三电压提供单元;
    所述像素列包括红色像素列、绿色像素列、蓝色像素列,所述红色像素列对应的阴极线与所述第一电压提供单元连接,所述绿色像素列对应的阴极线与所述第二电压提供单元连接,所述蓝色像素列对应的阴极线与所述第三电压提供单元连接。
  5. 如权利要求 1 所述的有机发光二极管显示器,其中所述阴极线是通过蒸镀工艺形成的。
  6. 如权利要求 1 所述的有机发光二极管显示器,其中
    所述有机发光二极管显示器还包括开关阵列层,所述开关阵列层位于所述阳极层下,所述开关阵列层包括多个开关元件。
  7. 如权利要求 1 所述的有机发光二极管显示器,其中
    所述有机发光二极管显示器还包括封装层,所述封装层位于所述阴极层上。
  8. 如权利要求 1 所述的有机发光二极管显示器,其中所述有机发光二极管显示器的类型为顶发射型或者底发射型。
  9. 一种有机发光二极管显示器,其包括:
    阳极层;
    有机层,位于所述阳极层上;
    阴极层,位于所述有机层上;所述阴极层包括多条阴极线,其中所述有机发光二极管显示器具有多个像素列;所述阴极线与所述像素列对应;
    同一像素列中的像素的颜色相同,不同颜色的像素列对应的阴极线分别接入不同的阴极电压。
  10. 如权利要求 9 所述的有机发光二极管显示器,其中所述有机发光二极管显示器还包括电压提供模块,所述电压提供模块用于提供阴极电压,所述阴极线与所述电压提供模块连接。
  11. 如权利要求 10 所述的有机发光二极管显示器,其中所述阴极线的一端与所述电压提供模块连接。
  12. 如权利要求 10 所述的有机发光二极管显示器,其中所述阴极线的两端都与所述电压提供模块连接。
  13. 如权利要求 10 所述的有机发光二极管显示器,其中所述电压提供模块包括用于提供第一阴极电压的第一电压提供单元、用于提供第二阴极电压的第二电压提供单元以及用于提供第三阴极电压的第三电压提供单元;
    所述像素列包括红色像素列、绿色像素列、蓝色像素列,所述红色像素列对应的阴极线与所述第一电压提供单元连接,所述绿色像素列对应的阴极线与所述第二电压提供单元连接,所述蓝色像素列对应的阴极线与所述第三电压提供单元连接。
  14. 如权利要求 9 所述的有机发光二极管显示器,其中所述阴极线之间间隔设置。
  15. 如权利要求 9 所述的有机发光二极管显示器,其中所述阴极线是通过蒸镀工艺形成的。
  16. 如权利要求 9 所述的有机发光二极管显示器,其中
    所述有机发光二极管显示器还包括开关阵列层,所述开关阵列层位于所述阳极层下,所述开关阵列层包括多个开关元件。
  17. 如权利要求 9 所述的有机发光二极管显示器,其中
    所述有机发光二极管显示器还包括封装层,所述封装层位于所述阴极层上。
  18. 如权利要求 9 所述的有机发光二极管显示器,其中所述有机发光二极管显示器的类型为顶发射型或者底发射型。
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