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WO2015096343A1 - 有源矩阵有机发光二极管显示基板、显示装置 - Google Patents

有源矩阵有机发光二极管显示基板、显示装置 Download PDF

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Publication number
WO2015096343A1
WO2015096343A1 PCT/CN2014/076618 CN2014076618W WO2015096343A1 WO 2015096343 A1 WO2015096343 A1 WO 2015096343A1 CN 2014076618 W CN2014076618 W CN 2014076618W WO 2015096343 A1 WO2015096343 A1 WO 2015096343A1
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WIPO (PCT)
Prior art keywords
power signal
organic light
emitting diode
active matrix
light emitting
Prior art date
Application number
PCT/CN2014/076618
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English (en)
French (fr)
Inventor
陈俊生
Original Assignee
京东方科技集团股份有限公司
鄂尔多斯市源盛光电有限责任公司
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Application filed by 京东方科技集团股份有限公司, 鄂尔多斯市源盛光电有限责任公司 filed Critical 京东方科技集团股份有限公司
Priority to US14/422,854 priority Critical patent/US9356088B2/en
Publication of WO2015096343A1 publication Critical patent/WO2015096343A1/zh

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control 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
    • G09G3/22—Control 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
    • G09G3/30—Control 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
    • G09G3/32—Control 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]
    • G09G3/3208—Control 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]
    • G09G3/3225—Control 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] using an active matrix
    • 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
    • H10K59/131—Interconnections, e.g. wiring lines or terminals
    • H10K59/1315—Interconnections, e.g. wiring lines or terminals comprising structures specially adapted for lowering the resistance
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0421—Structural details of the set of electrodes
    • G09G2300/0426—Layout of electrodes and connections
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen

Definitions

  • the present invention relates to the field of display technologies, and in particular, to an active matrix organic light emitting diode display substrate and a display device including the active matrix organic light emitting diode display substrate. Background technique
  • an equivalent circuit of a pixel unit of an active matrix organic light-emitting display in the prior art includes: a switch tube M1, a drive tube M2, a storage capacitor C1, and an organic light-emitting diode D1.
  • the switch M1 is turned on when the gate is gated by the scan signal Vscan(n), and the data signal Vdata is introduced.
  • the driving transistor M2 operates in the saturation region, and its gate-source voltage Vgs (that is, the data signal Vdata) determines the magnitude of the current flowing through it, thereby providing a stable current for the organic light-emitting diode D1.
  • VDD is the power supply voltage
  • VDD provides the energy required for the organic light emitting diode D1 to emit light
  • VDD affects the luminance of the organic light emitting diode D1.
  • the function of the storage capacitor C1 is to maintain the stability of the gate voltage of the driving transistor M2 within one frame time.
  • threshold compensation circuits may be added to compensate for the threshold drift of the driving transistor M2 so that the current flowing through the driving transistor M2 is not affected by the drift of the threshold voltage.
  • FIG. 3 is a schematic cross-sectional view of a pixel of an active matrix organic light emitting diode display panel, including a substrate substrate 1, a buffer layer 4 on the substrate substrate 1, and an active layer on the buffer layer 4. a layer 6, a second insulating layer 5 on the active layer 6, a layer on the second insulating layer 5 including the gate electrode 9 and the signal trace region 15, located in the package a third insulating layer 7 on the layer of the gate electrode 9 and the signal wiring region 15, and a source 8, a drain 10 and a power signal connection line 22 on the third insulating layer 7, the power signal connection line in the figure 22 may be connected to the thin film transistor as needed, the source 8 and the drain 10 of the thin film transistor are connected to the active layer 6 through via holes, 11 represents a planarization layer, and 12 represents an anode of the organic light emitting diode, which passes through the via and the drain 10 is connected, 14 represents an organic light-emitting layer, and 13 represents a pixel defining layer.
  • the object of the present invention is to solve the problem that the VDD trace causes a relatively large voltage drop in the prior art, thereby causing a difference in driving voltage of the OLED device and uneven brightness of the panel display, and providing a panel with a smaller voltage drop of the VDD signal.
  • An active matrix organic light emitting diode display substrate having a more uniform brightness is displayed.
  • the technical solution adopted to solve the technical problem to be solved by the present invention is an active matrix organic light emitting diode display substrate comprising a substrate substrate and a plurality of pixel structures arranged in a matrix on the substrate substrate, further comprising, for each The pixel structure provides a power signal structure of a power signal, and the power signal structure includes a power signal electrode of a layer structure.
  • the power signal structure includes the power signal electrode of the planar structure, the resistance of the power signal structure is reduced, and the voltage drop of the VDD is correspondingly reduced, so that the difference of the driving voltage of the organic light emitting diode is small, and the brightness of the display panel is ensured. Uniformity.
  • the power signal structure further includes a power signal connection line, and the power signal connection line is connected in parallel with the power signal electrode.
  • Power signal cable and The parallel connection of the power signal electrodes further reduces the voltage drop of the supply voltage VDD.
  • each of the plurality of pixel structures includes a thin film transistor for driving an organic light emitting diode, the power signal connection line is disposed in the same layer as the gate of the thin film transistor, and the power signal electrode is located at the On the surface of the substrate.
  • the power signal connection line and the gate of the thin film transistor are arranged in the same layer to simplify the manufacturing process, and can be completed by one time; the power signal electrode is disposed on the surface of the base substrate, and the area of the power signal electrode can be increased as much as possible to avoid Excessive openings.
  • each of the plurality of pixel structures includes a thin film transistor for driving an organic light emitting diode
  • the power signal connection line is disposed in the same layer as the source and the drain of the thin film transistor, the power signal The electrodes are located on a surface of the base substrate.
  • the power signal connection line and the source and the drain of the thin film transistor are disposed in the same layer to simplify the manufacturing process, and can be completed in one time; the power signal electrode is disposed on the surface of the base substrate, and the power signal electrode can be increased as much as possible. Area, avoid excessive openings.
  • the projection of the power signal electrode and the active layer of the thin film transistor on the substrate does not overlap each other. This prevents the supply voltage signal from inducing an induced charge on the active layer, thereby affecting the control of the thin film transistor.
  • the active matrix organic light emitting diode display substrate further includes a signal trace region, and the projections of the power signal electrode and the signal trace region on the substrate substrate do not overlap each other. This prevents the supply voltage signal from adversely affecting the signal trace area.
  • the power signal connection line is connected to the power signal electrode through a via.
  • the anode of the organic light emitting diode is connected to the drain of the thin film transistor.
  • Another object of the present invention is to provide a display device comprising any of the above-described active matrix organic light emitting diode display substrates.
  • the power signal structure includes a power signal electrode of a planar structure
  • the resistance of the power signal structure is lowered.
  • the voltage drop of VDD is lowered, so that the difference in driving voltage of the organic light emitting diode is small, and the uniformity of display brightness of the display panel is ensured.
  • 1 is an equivalent circuit diagram of a pixel unit of an active matrix organic light emitting diode display substrate in the prior art.
  • FIG. 2 is a schematic diagram of a VDD trace of an active matrix organic light emitting diode display substrate in the prior art.
  • FIG 3 is a schematic cross-sectional view showing a single pixel of an active matrix organic light emitting diode display substrate in the prior art.
  • FIG. 4 is a schematic cross-sectional view showing a single pixel of an active matrix organic light emitting diode display substrate according to Embodiment 1 of the present invention, wherein a power signal connection line is disposed in the same layer as a source/drain, a power signal electrode and a thin film transistor The projections of the active layers on the base substrate do not overlap each other.
  • FIG. 5 is a cross-sectional view showing a single pixel of another active matrix OLED display substrate according to Embodiment 1 of the present invention, wherein a power signal connection line is disposed in the same layer as the gate, and a power signal electrode and a signal wiring area are provided.
  • the projections on the base substrate do not overlap each other.
  • Fig. 6 is a top plan view showing an active matrix organic light emitting diode display substrate according to Embodiment 1 of the present invention. detailed description
  • the present embodiment provides an active matrix organic light emitting diode display substrate including a substrate substrate 1 and a plurality of matrix arrays on the substrate substrate 1. a pixel structure, further comprising a power signal structure for providing a power signal for each pixel structure, the power signal structure including A power signal electrode 21 of a layered structure.
  • planar structure means that the power signal electrode 21 is a separate layer in each pixel structure. It should be understood that when the thin film transistor and the planar power signal electrode 21 that need to input the power signal are located at different layers, a via hole may be disposed above the power signal electrode 21 according to a specific application, and a thin film transistor and a power source that input a power signal are required.
  • the signal electrodes 21 are connected by lap joints.
  • the power signal structure includes a power signal electrode 21 of a layered structure
  • the signal structure is connected with respect to the linear structure in the prior art (for example, the wiring 16 in the periphery of the pixel in FIG. 2, and the power signal in the pixel in FIG. Line 22) reduces the resistance of the power signal structure, and accordingly reduces the voltage drop of VDD, so that the difference in driving voltage of the organic light emitting diode is small, and the uniformity of display brightness of the display panel is ensured.
  • the power signal structure further includes a power signal connection line 22, and the power signal connection line 22 is connected in parallel with the power signal electrode 21.
  • the parallel connection of the power signal connection line 22 to the power signal electrode 21 further reduces the voltage drop of the power supply voltage.
  • the power signal electrode 21 is connected to the power signal connection line 22 via a hole, and the power signal is transmitted to other functional layers of the pixel structure, for example, to the source 8.
  • top gate type TFT is exemplified in Fig. 4 and Fig. 5, the bottom gate type TFT can also be used in the embodiment.
  • the active matrix organic light emitting diode display substrate in this embodiment may be a top emission type or a bottom emission type.
  • the power signal electrode 21 since the power signal electrode 21 is usually metallic, the light transmission may be affected. Therefore, the active matrix organic light emitting diode display substrate in this embodiment is preferably a top emission type, especially if the power signal electrode 21 is reflective. Made of metal, it also eliminates the need for a separate reflective layer.
  • the power signal electrode 21 is disposed on the base substrate 1.
  • the first insulating layer 3 is further disposed between the power signal electrode 21 and the buffer layer 4. It should be understood that the power signal electrode 21 is provided. It can also be placed at other locations on the active matrix OLED display substrate.
  • the power signal electrode 21 is directly disposed on the surface of the base substrate 1, and thus is convenient to manufacture, and is electrically compared with the position where the power signal electrode 21 is formed in the central portion of the active matrix organic light emitting diode display substrate.
  • the source signal electrode 21 is directly disposed on the surface of the base substrate 1, fewer openings are required, and a large conductive area is easily formed, which is advantageous for further reducing the electric resistance.
  • the power signal connection line 22 of the power signal structure can be disposed at any position of the active matrix organic light emitting diode display substrate as needed. It should be understood that in order to save steps and shorten the process during fabrication, the power signal connection line 22 may be disposed in the same layer as the other metal layers of the active matrix organic light emitting diode display substrate. Preferably, as shown in Fig. 5, the power signal connection line 22 is disposed in the same layer as the gate.
  • Each of the pixel structures includes a source 8 and a drain 10, and preferably, a power signal connection 22 is connected to the source 8. It should be understood that since the structure of the active matrix organic light emitting diode display substrate is different, the internal wiring may be different, and thus the power signal connection line 22 may be connected to other lines or structures as needed.
  • the power signal connection line 22 is disposed in the same layer as the source/drain and is connected to the source 8.
  • the power signal electrode 21 is disposed on the surface of the base substrate 1, and is connected to the power signal connecting line 22 through the via.
  • the power signal electrode 21 has a planar structure, that is, the power signal electrode 21 can cover the entire base substrate 1, as shown in FIG. 6, the lower portion of the display region 18 is covered with the power signal electrode 21 (due to the displayed region 18). The occlusion can only see the edge portion), so there is no need to set a trace between the pixels 17 (for example, the trace 16 in Fig. 2).
  • the resistance of the power signal structure can be further reduced, thereby contributing to lowering the voltage drop of VDD.
  • the first insulating layer 3 when the first insulating layer 3 is thin, in order to prevent the power supply voltage signal from affecting the control of the thin film transistor, for example, generating an induced charge in the active layer 6, thereby affecting the control of the thin film transistor by the gate 9, it is necessary to make the power supply
  • the projections of the signal electrodes 21 and the active layers of the thin film transistors on the substrate substrate do not overlap each other.
  • the active matrix organic light emitting diode display substrate further includes an anode 12 of the organic light emitting diode connected to the drain 10 of the thin film transistor, and a signal wiring region 15 disposed in the same layer as the gate of the thin film transistor.
  • the actual signal of the signal trace area 15 may be a gate line signal or a data line signal or the like.
  • the projections of the power signal electrode 21 and the signal wiring region 15 on the substrate substrate do not overlap each other.
  • the embodiment provides a display device comprising any of the above-described active matrix organic light emitting diode display substrates. It is to be understood that the above embodiments are merely exemplary embodiments employed to explain the principles of the invention, but the invention is not limited thereto. Various modifications and improvements can be made by those skilled in the art without departing from the spirit and scope of the invention. These modifications and improvements are also considered to be within the scope of the invention.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Electroluminescent Light Sources (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

一种有源矩阵有机发光二极管显示基板和显示装置。显示基板包括衬底基板（1）和位于衬底基板（1）上呈矩阵排列的多个像素结构，以及为多个像素结构中的每一个提供电源信号的电源信号结构。电源信号结构包括一层面状结构的电源信号电极（21）。通过将电源信号结构设计成包括面状结构的电源信号电极（21），降低了电源信号结构的电阻，相应地降低了VDD的压降，从而导致有机发光二极管的驱动电压差异较小，保证了显示亮度的均一性。

Description

有源矩阵有机发光二极管显示基板、 显示装置 技术领域
本发明属于显示技术领域， 具体涉及有源矩阵有机发光二极 管显示基板和包括该有源矩阵有机发光二极管显示基板的显示装 置。 背景技术
有机发光显示器（ Organic Light-Emitting Display, OLED )的 驱动方法可分为被动矩阵式 (Passive Matrix , ΡΜ)和主动矩阵式 (Active Matrix, AM)两种。 而与被动矩阵式驱动相比， 主动矩阵 式驱动具有显示信息量大、 功耗低、 器件寿命长、 画面对比度高 等优点。 如图 1 所示， 现有技术中的一种主动矩阵式有机发光显 示器的像素单元的等效电路包括： 开关管 Ml、 驱动管 M2、 存储 电容 C1以及有机发光二极管 Dl。 其中， 开关管 Ml在栅极被扫 描信号 Vscan(n)选通时打开， 引入数据信号 Vdata。 驱动管 M2— 般工作在饱和区， 其栅源电压 Vgs (也就是数据信号 Vdata )决定 了流过其的电流的大小，进而为有机发光二极管 D1提供了稳定的 电流。 其中， VDD为电源电压， 提供有机发光二极管 D1发光所 需要的能源，也就是说 VDD影响有机发光二极管 D1的发光亮度。 而存储电容 C1的作用是在一帧的时间内维持驱动管 M2的栅极电 压的稳定。
当然， 也可以附加其它阔值补偿电路， 用于补偿驱动晶体管 M2的阔值漂移， 使得流过驱动管 M2的电流不受其阔值电压漂移 的影响。
如图 3所示为一种有源矩阵有机发光二极管显示面板的像素 的截面结构示意图， 包括衬底基板 1、位于衬底基板 1上的緩冲层 4、 位于緩冲层 4上的有源层 6、 位于有源层 6上的第二绝缘层 5、 位于第二绝缘层 5上的包括栅极 9和信号走线区 15的层、位于包 括栅极 9和信号走线区 15的层上的第三绝缘层 7、 以及位于第三 绝缘层 7上的源极 8、 漏极 10和电源信号连接线 22, 图中的电源 信号连接线 22可根据需要与薄膜晶体管连接， 薄膜晶体管的源极 8和漏极 10通过过孔与有源层 6连接， 11代表平坦化层， 12代表 有机发光二极管的阳极， 其通过过孔与漏极 10连接， 14代表有机 发光层， 以及 13代表像素界定层。
如图 2所示， 根据目前的设计， 所有的像素（图 2中的 "。 ，， 代表省略的像素 17 )都是通过显示区域 18外围和内部的 VDD走 线 16连接在一起， 但是随着分辨率的提高， 每个像素 17会越来 越小， 故当 VDD走线 16变得非常细且非常长的时候， 依然会造 成比较大的压降， 导致不同像素单元的 VDD的电压有差异， 从而 导致有机发光二极管 D1的驱动电压有差异，严重时可能会导致面 板显示亮度不均一。 发明内容
本发明的目的是解决现有技术中 VDD 走线造成比较大的压 降从而产生 OLED器件的驱动电压有差异、 面板显示亮度不均一 的问题， 提供一种能够实现 VDD信号压降更小、 面板显示亮度更 均一的有源矩阵有机发光二极管显示基板。
解决本发明所要解决的技术问题所采用的技术方案是一种有 源矩阵有机发光二极管显示基板， 包括衬底基板和位于衬底基板 上呈矩阵排列的多个像素结构， 还包括， 为每个所述像素结构提 供电源信号的电源信号结构， 所述电源信号结构包括一层面状结 构的电源信号电极。
由于电源信号结构包括面状结构的电源信号电极， 因此降低 了电源信号结构的电阻， 相应地降低了 VDD的压降， 从而使得有 机发光二极管的驱动电压差异较小， 保证了显示面板显示亮度的 均一性。
较佳地， 所述电源信号结构还包括电源信号连接线， 所述电 源信号连接线与所述电源信号电极并联连接。 电源信号连接线与 所述电源信号电极的并联进一步降低了电源电压 VDD的压降。 较佳地， 所述多个像素结构中的每一个包括用于驱动有机发 光二极管的薄膜晶体管， 所述电源信号连接线与所述薄膜晶体管 的栅极同层设置， 所述电源信号电极位于所述衬底基板的表面上。 其中， 电源信号连接线与薄膜晶体管的栅极同层设置能简化制作 工艺， 可通过一次制作完成； 电源信号电极设于衬底基板的表面 上， 能够尽量地增大电源信号电极的面积， 避免过多的开口。
较佳地， 所述多个像素结构中的每一个包括用于驱动有机发 光二极管的薄膜晶体管， 所述电源信号连接线与所述薄膜晶体管 的源极和漏极同层设置， 所述电源信号电极位于所述衬底基板的 表面上。 其中， 电源信号连接线与薄膜晶体管的源极和漏极同层 设置能简化制作工艺， 可通过一次制作完成； 电源信号电极设于 衬底基板的表面上， 能够尽量地增大电源信号电极的面积， 避免 过多的开口。
较佳地， 所述电源信号电极与所述薄膜晶体管的有源层在所 述衬底基板上的投影互不重叠。 这样能避免电源电压信号对有源 层产生感应电荷， 从而影响对薄膜晶体管的控制。
较佳地， 所述有源矩阵有机发光二极管显示基板还包括信号 走线区， 所述电源信号电极与所述信号走线区在所述衬底基板上 的投影互不重叠。 这样能避免电源电压信号对信号走线区产生不 良影响。
较佳地， 所述电源信号连接线与所述电源信号电极通过过孔 连接。
较佳地， 有机发光二极管的阳极与所述薄膜晶体管的漏极连 接。
本发明的另一个目的是提供一种显示装置， 其包括上述任一 种有源矩阵有机发光二极管显示基板。
根据本发明的有源矩阵有机发光二极管显示基板及包括该有 源矩阵有机发光二极管显示基板的显示装置， 由于电源信号结构 包括面状结构的电源信号电极， 因此降低了电源信号结构的电阻， 相应地降低了 VDD的压降，从而使得有机发光二极管的驱动电压 差异较小， 保证了显示面板显示亮度的均一性。 附图说明
图 1为现有技术中的一种有源矩阵有机发光二极管显示基板 的像素单元的等效电路示意图。
图 2为现有技术中的一种有源矩阵有机发光二极管显示基板 的 VDD走线的示意图。
图 3为现有技术中的一种有源矩阵有机发光二极管显示基板 的单个像素的剖面示意图。
图 4为根据本发明的实施例 1的一种有源矩阵有机发光二极 管显示基板的单个像素的剖面示意图， 其中， 电源信号连接线与 源 /漏极同层设置， 电源信号电极与薄膜晶体管的有源层在衬底基 板上的投影互不重叠。
图 5为根据本发明的实施例 1的另一种有源矩阵有机发光二 极管显示基板的单个像素的剖面示意图， 其中， 电源信号连接线 与栅极同层设置， 电源信号电极与信号走线区在衬底基板上的投 影互不重叠。
图 6为根据本发明的实施例 1的有源矩阵有机发光二极管显 示基板的俯视示意图。 具体实施方式
为使本领域技术人员更好地理解本发明的技术方案， 下面结 合附图和具体实施方式对本发明作进一步详细描述。 实施例 1
如图 4和图 5所示， 本实施例提供一种有源矩阵有机发光二 极管显示基板， 该有源矩阵有机发光二极管显示基板包括衬底基 板 1和位于衬底基板 1上呈矩阵排列的多个像素结构， 还包括为 每个像素结构提供电源信号的电源信号结构， 电源信号结构包括 一层面状结构的电源信号电极 21。 这里的 "面状结构" 指电源信 号电极 21在每个像素结构中为独立的一层。 应当理解的是， 当需 要输入电源信号的薄膜晶体管与面状电源信号电极 21位于不同层 时， 也可根据具体应用情况在电源信号电极 21上方设置过孔， 需 要输入电源信号的薄膜晶体管与电源信号电极 21通过该过孔搭接 连接。
由于电源信号结构包括一层面状结构的电源信号电极 21 , 因 此相对于现有技术中的线状的结构 （例如， 图 2 中像素外围的走 线 16、 图 3中的像素中的电源信号连接线 22 ) , 降低了电源信号 结构的电阻， 相应地降低了 VDD的压降， 从而使得有机发光二极 管的驱动电压差异较小， 保证了显示面板显示亮度的均一性。
优选地， 电源信号结构还包括电源信号连接线 22, 电源信号 连接线 22与电源信号电极 21并联连接。 电源信号连接线 22与电 源信号电极 21的并联进一步降低了电源电压的压降。
优选地， 电源信号电极 21经过孔与电源信号连接线 22连接， 将电源信号传递给像素结构的其它功能层， 例如， 可以传递给源 极 8。
应当理解是， 图中 4和图 5中虽以顶栅型 TFT为例， 但本实 施例也可采用底栅型 TFT。
此外， 本实施例中的有源矩阵有机发光二极管显示基板可以 是顶发射型或底发射型。 但是， 由于电源信号电极 21通常是金属 的， 可能会影响透光， 所以本实施例中的有源矩阵有机发光二极 管显示基板优选为顶发射型， 尤其是， 如果电源信号电极 21采用 可反光的金属制造， 还可省去单独的反光层。
如图 4至图 6所示， 电源信号电极 21设置于衬底基板 1上， 电源信号电极 21与緩冲层 4之间还设置有第一绝缘层 3 , 应当理 解的是， 电源信号电极 21也可以设置在有源矩阵有机发光二极管 显示基板的其它位置。 本实施例中该电源信号电极 21直接设置在 衬底基板 1的表面上， 因此制作方便， 并且与将电源信号电极 21 制作在有源矩阵有机发光二极管显示基板的中部位置相比， 将电 源信号电极 21 直接设置在衬底基板 1 的表面上时所需的开孔较 少， 容易形成较大导电面积， 有利于进一步降低电阻。
优选地， 电源信号结构的电源信号连接线 22可以根据需要设 置在有源矩阵有机发光二极管显示基板的任意位置。 应当理解的 是， 为了在制作时可以节省步骤、 缩短工艺， 电源信号连接线 22 可以与有源矩阵有机发光二极管显示基板的其它金属层同层设 置。 优选地， 如图 5所示， 电源信号连接线 22与栅极同层设置。
每个像素结构包括源极 8和漏极 10, 优选地， 电源信号连接 线 22与源极 8连接。 应当理解的是， 由于有源矩阵有机发光二极 管显示基板的结构类型不同， 内部的布线也可不相同， 因此电源 信号连接线 22也可以根据需要与其它线路或结构连接。
如图 4所示， 优选地， 电源信号连接线 22与源 /漏极同层设 置， 并与源极 8连接。 电源信号电极 21设置在衬底基板 1的表面 上， 并通过过孔与电源信号连接线 22连接。
由于电源信号电极 21 为面状结构， 也就是说电源信号电极 21可以铺满整个衬底基板 1 , 如图 6所示， 显示区域 18的下方铺 满了电源信号电极 21(由于被显示区域 18遮挡所以只能看到边缘 部分） ， 因此各像素 17之间不用再设置走线（例如， 图 2中的走 线 16 ) 。
由于电源信号电极 21的导电面积大， 相应地电阻较小， 所以 电源信号结构的电阻能够进一步地降低， 从而更有利于降低 VDD 的压降。
优选地， 当第一绝缘层 3较薄时， 为了防止电源电压信号影 响对薄膜晶体管的控制， 例如， 在有源层 6产生感应电荷， 从而 影响栅极 9对薄膜晶体管的控制， 需要使电源信号电极 21与薄膜 晶体管的有源层在衬底基板上的投影互不重叠。
优选地， 有源矩阵有机发光二极管显示基板还包括与薄膜晶 体管的漏极 10连接的有机发光二极管的阳极 12、以及与薄膜晶体 管的栅极同层设置的信号走线区 15。 应当理解的是， 根据有源矩 阵有机发光二极管显示基板的不同应用， 施加到每个像素结构中 的信号走线区 15的实际信号可以是栅线信号或数据线信号等。 优选地， 为了避免对信号走线区 15中的信号的影响， 电源信 号电极 21与信号走线区 15在衬底基板上的投影互不重叠。
可以理解的是， 上述有源矩阵有机发光二极管显示基板的各 功能层的制备方法属于现有技术范畴， 在此不再——赘述。 实施例 2
本实施例提供一种显示装置， 该显示装置包括上述的任意一 种有源矩阵有机发光二极管显示基板。 可以理解的是， 以上实施方式仅仅是为了说明本发明的原理 而采用的示例性实施方式， 然而本发明并不局限于此。 对于本领 域内的普通技术人员而言， 在不脱离本发明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发明的 保护范围。

Claims

权 利 要 求 书
1.一种有源矩阵有机发光二极管显示基板， 包括衬底基板和 位于所述衬底基板上呈矩阵排列的多个像素结构， 其特征在于， 还包括为所述多个所述像素结构中的每一个提供电源信号的电源 信号结构， 所述电源信号结构包括一层面状结构的电源信号电极。
2. 如权利要求 1所述的有源矩阵有机发光二极管显示基板， 其特征在于， 所述电源信号电极位于所述衬底基板的表面上。
3.如权利要求 1或 2所述的有源矩阵有机发光二极管显示基 板， 所述电源信号结构还包括电源信号连接线， 所述电源信号连 接线与所述电源信号电极并联连接。
4.如权利要求 3 所述的有源矩阵有机发光二极管显示基板， 其特征在于， 所述多个像素结构中的每一个都包括用于驱动有机 发光二极管的薄膜晶体管， 所述电源信号连接线与所述薄膜晶体 管的栅极同层设置。
5.如权利要求 3 所述的有源矩阵有机发光二极管显示基板， 其特征在于， 所述多个像素结构中的每一个都包括用于驱动有机 发光二极管的薄膜晶体管， 所述电源信号连接线与所述薄膜晶体 管的源极和漏极同层设置。
6.如权利要求 4或 5所述的有源矩阵有机发光二极管显示基 板， 其特征在于， 所述电源信号电极与所述薄膜晶体管的有源层 在所述衬底基板上的投影互不重叠。
7.如权利要求 4或 5所述的有源矩阵有机发光二极管显示基 板， 其特征在于， 所述显示基板还包括信号走线区， 所述电源信 号电极与所述信号走线区在所述衬底基板上的投影互不重叠。
8.如权利要求 4或 5所述的有源矩阵有机发光二极管显示基 板， 其特征在于， 所述电源信号连接线与所述电源信号电极通过 过孔连接。
9.如权利要求 4或 5所述的有源矩阵有机发光二极管显示基 板， 其特征在于， 所述有机发光二极管的阳极与所述薄膜晶体管 的漏极连接。
10.—种显示装置， 其特征在于， 包括如权利要求 1-9中任一 项所述的有源矩阵有机发光二极管显示基板。
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111613657A (zh) * 2020-05-28 2020-09-01 维沃移动通信有限公司 显示基板、显示器件及移动终端

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103745985B (zh) 2013-12-27 2015-03-18 京东方科技集团股份有限公司 一种有源矩阵有机发光二极管显示基板、显示装置
US9397124B2 (en) * 2014-12-03 2016-07-19 Apple Inc. Organic light-emitting diode display with double gate transistors
CN104916660B (zh) * 2015-04-20 2018-04-20 京东方科技集团股份有限公司 柔性显示面板及显示装置
US9781800B2 (en) * 2015-05-21 2017-10-03 Infineon Technologies Ag Driving several light sources
CN105810693A (zh) * 2016-04-27 2016-07-27 京东方科技集团股份有限公司 阵列基板及其制作方法、显示装置
CN106024845B (zh) * 2016-08-01 2019-02-26 深圳市华星光电技术有限公司 一种有机发光二极管显示器及其制作方法
CN106206670B (zh) * 2016-08-31 2019-06-07 深圳市华星光电技术有限公司 Amoled显示装置及其阵列基板
CN107871757B (zh) * 2016-09-23 2020-04-14 京东方科技集团股份有限公司 有机发光二极管阵列基板及其制备方法、显示装置
KR102457251B1 (ko) 2017-03-31 2022-10-21 삼성디스플레이 주식회사 유기 발광 표시 장치
CN107195660B (zh) * 2017-05-27 2020-01-07 上海天马有机发光显示技术有限公司 有机发光显示面板及显示装置
CN109390351B (zh) * 2017-08-02 2021-01-22 京东方科技集团股份有限公司 布线结构及其制备方法、oled阵列基板、显示装置
KR102518854B1 (ko) * 2018-04-05 2023-04-10 삼성디스플레이 주식회사 표시 장치
CN108695370B (zh) * 2018-05-21 2021-10-22 京东方科技集团股份有限公司 Oled基板及制作方法、显示装置
CN109065590B (zh) * 2018-08-09 2020-12-04 京东方科技集团股份有限公司 有机发光显示基板及其制作方法、有机发光显示装置
CN109147654A (zh) * 2018-10-30 2019-01-04 京东方科技集团股份有限公司 显示基板及显示装置
WO2020160092A1 (en) * 2019-02-01 2020-08-06 Lam Research Corporation Ion beam etching with gas treatment and pulsing
CN110021654B (zh) * 2019-04-24 2021-11-09 京东方科技集团股份有限公司 一种显示基板及其制作方法、显示装置
CN110137228B (zh) * 2019-05-14 2021-06-01 昆山国显光电有限公司 一种显示面板及显示设备
CN110289270B (zh) 2019-06-28 2021-10-26 京东方科技集团股份有限公司 阵列基板及其制造方法、显示装置
CN113658958B (zh) * 2021-01-28 2023-05-05 深圳市华星光电半导体显示技术有限公司 显示面板及其制备方法
CN112928195B (zh) * 2021-01-29 2022-12-02 京东方科技集团股份有限公司 发光基板和制备发光基板的方法、显示装置
CN117501843A (zh) * 2022-05-31 2024-02-02 京东方科技集团股份有限公司 显示模组、显示装置及平坦化工艺
CN115719747B (zh) * 2022-10-31 2023-10-20 惠科股份有限公司 驱动基板及显示装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1430287A (zh) * 2001-12-14 2003-07-16 三星Sdi株式会社 具有面板的平板显示器件及其制造方法
CN1822738A (zh) * 2005-01-20 2006-08-23 精工爱普生株式会社 电光学装置及其制造方法、以及电子仪器
CN102916037A (zh) * 2012-10-12 2013-02-06 京东方科技集团股份有限公司 一种有源矩阵有机电致发光显示器件及显示装置
CN102916036A (zh) * 2012-10-12 2013-02-06 京东方科技集团股份有限公司 一种有源矩阵有机电致发光显示器件及显示装置
CN103745985A (zh) * 2013-12-27 2014-04-23 京东方科技集团股份有限公司 一种有源矩阵有机发光二极管显示基板、显示装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1430287A (zh) * 2001-12-14 2003-07-16 三星Sdi株式会社 具有面板的平板显示器件及其制造方法
CN1822738A (zh) * 2005-01-20 2006-08-23 精工爱普生株式会社 电光学装置及其制造方法、以及电子仪器
CN102916037A (zh) * 2012-10-12 2013-02-06 京东方科技集团股份有限公司 一种有源矩阵有机电致发光显示器件及显示装置
CN102916036A (zh) * 2012-10-12 2013-02-06 京东方科技集团股份有限公司 一种有源矩阵有机电致发光显示器件及显示装置
CN103745985A (zh) * 2013-12-27 2014-04-23 京东方科技集团股份有限公司 一种有源矩阵有机发光二极管显示基板、显示装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111613657A (zh) * 2020-05-28 2020-09-01 维沃移动通信有限公司 显示基板、显示器件及移动终端
CN111613657B (zh) * 2020-05-28 2023-12-12 维沃移动通信有限公司 显示基板、显示器件及移动终端

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