WO2019010759A1 - 一种oled显示面板及oled显示器 - Google Patents

一种oled显示面板及oled显示器 Download PDF

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Publication number
WO2019010759A1
WO2019010759A1 PCT/CN2017/098443 CN2017098443W WO2019010759A1 WO 2019010759 A1 WO2019010759 A1 WO 2019010759A1 CN 2017098443 W CN2017098443 W CN 2017098443W WO 2019010759 A1 WO2019010759 A1 WO 2019010759A1
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WIPO (PCT)
Prior art keywords
cathode
switching element
array substrate
oled display
oled
Prior art date
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Ceased
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PCT/CN2017/098443
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English (en)
French (fr)
Inventor
石龙强
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Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Priority to US15/557,100 priority Critical patent/US10522607B2/en
Publication of WO2019010759A1 publication Critical patent/WO2019010759A1/zh
Anticipated expiration legal-status Critical
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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

Definitions

  • the present invention relates to the field of display technologies, and in particular, to an OLED display panel and an OLED display.
  • OLED Organic Light Emitting Diode
  • OLED has the characteristics of self-illumination, low power consumption, fast response speed, high contrast, wide viewing angle, etc. Therefore, OLED has a wide range of application scenarios in the field of display technology.
  • FIG. 1 is a schematic structural diagram of an embodiment of a conventional OLED display panel.
  • the OLED display panel includes an array substrate 10 and a cathode 12.
  • the cathode 12 is generally a planar electrode disposed corresponding to the array substrate 10.
  • the cathode voltage signal VSS provided by the low-voltage DC power source is sequentially transmitted through the array substrate 10 and the conductive material 14 to Cathode 12, in turn, causes cathode 12 to obtain a corresponding cathode potential.
  • the inventors of the present invention found in the long-term development process that since the cathode 12 is a monolithic electrode, the cathode 12 has a high electrical resistance, which increases the voltage drop of the OLED (IR). Drop), which causes the brightness of the OLED display to decrease, which seriously affects the normal display of the OLED.
  • the technical problem to be solved by the present invention is to provide an OLED display panel and an OLED display capable of reducing cathode resistance.
  • an OLED display panel including: an array substrate including a plurality of scan lines and a plurality of data lines, wherein the plurality of scan lines and the a plurality of data lines intersecting each other to divide the array substrate into a plurality of pixel regions, and each of the pixel regions is provided with a corresponding OLED light emitting unit; and a cathode plate disposed corresponding to the array substrate, including a transparent substrate And a plurality of cathode strips disposed parallel to each other on a side of the transparent substrate facing the array substrate, wherein each cathode strip corresponds to a row of pixel regions on the array substrate to serve as an OLED in the row of pixel regions a cathode of the light emitting unit; wherein the array substrate is provided with a plurality of cathode switching elements, the cathode switching elements are thin film transistors, and a control end of each of the cathode switching elements is electrically
  • an OLED display panel including: an array substrate including a plurality of scan lines and a plurality of data lines, wherein the plurality of scan lines and The plurality of data lines intersect with each other to divide the array substrate into a plurality of pixel regions, and each of the pixel regions is provided with a corresponding OLED light emitting unit; a cathode plate is disposed corresponding to the array substrate, and The cathode plate is provided with a plurality of cathode strips parallel to each other, wherein each cathode strip corresponds to a row of pixel regions on the array substrate to serve as a cathode of the OLED light emitting unit in the row of pixel regions; wherein A plurality of cathode switching elements are disposed on the array substrate, and a control end of each of the cathode switching elements is electrically connected to a corresponding one of the scan lines, a first path end of which is connected to a low
  • another technical solution adopted by the present invention is to provide an OLED display, which includes the OLED display panel in any of the above embodiments.
  • the OLED display panel provided by the present invention includes an array substrate and a cathode plate, wherein the cathode plate covers the array substrate, and the plurality of cathode plates are disposed in parallel with each other.
  • a cathode strip each cathode strip corresponding to a row of pixel regions on the array substrate as a cathode of the OLED light emitting unit in the row of pixel regions;
  • the array substrate further provided with a plurality of cathode switching elements, each of the cathode switching elements
  • the control terminal is electrically connected to a corresponding scan line, the first path end is connected to the low voltage DC power source, and the second path end is connected to a corresponding cathode strip;
  • the OLED display panel provided by the invention scans during operation The line is opened row by row.
  • the corresponding cathode switching element When the corresponding scan line of the cathode strip is scanned, the corresponding cathode switching element is turned on to supply the cathode voltage provided by the low voltage DC power source to the corresponding cathode strip, so that the cathode strip is
  • the OLED light emitting unit in the corresponding row of pixel regions works normally.
  • only one cathode strip corresponding to the OLED light-emitting unit in the corresponding one-pixel area can sense the cathode voltage, which can greatly reduce the resistance of the cathode, thereby reducing the cathode resistance.
  • the resulting voltage drop which in turn increases the display of the OLED.
  • FIG. 1 is a schematic structural view of an embodiment of a conventional OLED display panel
  • FIG. 2 is a schematic structural view of an embodiment of an OLED display panel of the present invention.
  • FIG. 3 is a schematic structural view of an embodiment of the array substrate of FIG. 2;
  • Figure 4 is a schematic structural view of an embodiment of the cathode plate of Figure 2;
  • FIG. 5 is a circuit diagram of an embodiment of a driving circuit of an OLED lighting unit of FIG. 2;
  • FIG. 6 is a schematic structural view of an embodiment of an OLED display of the present invention.
  • FIG. 2 is a schematic structural diagram of an embodiment of an OLED display panel according to the present invention.
  • the display panel 2 includes an array substrate 20 and a cathode plate 22, and the cathode plate 22 covers the array substrate 20.
  • FIG. 3 is a schematic structural diagram of an embodiment of the array substrate of FIG.
  • the array substrate 20 includes a plurality of scan lines G1, G2, G3, and G4 and a plurality of data lines D1, D2, D3, and D4. Only four scan lines and four data lines are schematically illustrated in FIG. 3, in other embodiments. The number of the scan lines and the data lines may be other, which is not limited by the present invention.
  • the plurality of scan lines G1, G2, G3, and G4 and the plurality of data lines D1, D2, D3, and D4 cross each other to divide the array substrate 20 into a plurality of pixel regions, and each pixel region is provided with a corresponding one.
  • FIG. 4 is a schematic structural view of an embodiment of the cathode plate of FIG.
  • the cathode plate 22 is provided with a plurality of cathode strips 221, 222, 223, and 224 which are parallel to each other.
  • the cathode strips 221, 222, 223, and 224 are made of metal (for example, copper, aluminum, etc.) or Conductive non-metal (for example, indium tin oxide ITO, graphite, etc.); in another embodiment, the cathode plate 22 further includes a transparent substrate 220 for carrying the cathode strips 221, 222, 223, 224, and the material of the transparent substrate 220 is The non-conductive transparent material (for example, glass or the like) and the cathode strips 221, 222, 223, and 224 are disposed on one surface of the transparent substrate 220 facing the array substrate 20.
  • metal for example, copper, aluminum, etc.
  • Conductive non-metal for example, indium tin oxide ITO, graphite, etc.
  • the cathode plate 22 further includes a transparent substrate 220 for carrying the cathode strips 221, 222, 223, 224, and the material of the transparent substrate 220 is The non-conductive transparent material (for example, glass or the like) and
  • each of the cathode strips 221, 222, 223, 224 corresponds to a row of pixel regions on the array substrate 20 to serve as a cathode of the OLED light emitting unit in the row of pixel regions; in one application scenario, each cathode strip 221,
  • the length direction of the 222, 223, and 224 is the same as the direction of the corresponding scanning lines G1, G2, G3, and G3; for example, in the present embodiment, the cathode strip 221 corresponds to a row of pixel regions 301 on the array substrate 20, and the cathode strip 221 The length direction is the same as the direction of the scanning line G1 corresponding to the row of pixel regions 301; the cathode strip 222 corresponds to a row of pixel regions 302 on the array substrate 20, and the length of the cathode strip 222 corresponds to the scanning line G2 of the row of pixel regions 302.
  • the direction is the same; the cathode strip 223 corresponds to a row of pixel regions 303 on the array substrate 20, the length direction of the cathode strip 223 is the same as the direction of the scanning line G3 corresponding to the row of pixel regions 303; and the cathode strip 224 and a row on the array substrate 20
  • the pixel area 304 corresponds to the same length of the cathode strip 224 and the direction of the scanning line G4 corresponding to the row of pixel areas 304.
  • the width of each of the cathode strips 221, 222, 223, 224 is greater than or equal to the width of a row of the corresponding OLED light-emitting units, and one of the cathode strips 224 is taken as an example, and the width d1 thereof Is greater than or equal to the width d2 of the OLED lighting units J, K, L in a row of pixel regions 304 corresponding thereto; in another application scenario, since each cathode strip 221, 222, 223, 224 needs to be electrically insulated, One of the cathode strips 224 is taken as an example.
  • the width d1 of the cathode strip 224 is greater than or equal to the width d2 of its corresponding row of OLED light emitting units J, K, L, the width d1 of the cathode strip 224 should also be smaller than its corresponding row pixel area 304.
  • the array substrate 20 is further provided with a plurality of cathode switching elements 201, 202, 203, 204.
  • the control end of the cathode switching element 201 201a is electrically connected to its corresponding scan line G1, its first via end 201b is connected to a low voltage DC power supply, and its second via end 201c is connected to its corresponding cathode strip 221; when the cathode strip 221 corresponds to the scan line G1 is
  • the control terminal 201a of the corresponding cathode switching element 201 inputs a pulse voltage to turn on the corresponding cathode switching element 201, and the turned-on cathode switching element 201 supplies the cathode voltage provided by the low-voltage DC power source to the corresponding one.
  • the cathode strip 221 is such that the OLED light-emitting units A, B, and C in a row of pixel regions 301 corresponding to the cathode strip 221 operate normally.
  • the remaining cathode switching elements 202, 203, 204 are similar to the above-described cathode switching element 201 and will not be described herein.
  • the OLED display panel 2 provided by the present invention Since the OLED display panel 2 provided by the present invention is in operation, its scan lines G1, G2, G3, and G4 are opened row by row, and at a certain moment, when a certain scan line (for example, the scan line G1) is turned on, only its A cathode strip (eg, cathode strip 221) corresponding to an OLED light emitting unit (eg, OLED light emitting elements A, B, C) in a corresponding row of pixel regions (eg, row pixel region 301) can sense the cathode voltage, which can be greatly reduced. The resistance of the cathode, thereby reducing the voltage drop due to the cathode resistance, thereby improving the display effect of the OLED.
  • a certain scan line for example, the scan line G1 is turned on
  • a cathode strip eg, cathode strip 221 corresponding to an OLED light emitting unit (eg, OLED light emitting elements A, B, C) in a
  • the cathode switching elements 201, 202, 203, and 204 are thin film transistors, respectively, and may be N-type thin film transistors or P-type thin film transistors.
  • the second path end of the cathode switching elements 201, 202, 203, and 204 is a signal switching probe, and the material of the signal switching probe is metal.
  • the display panel 2 provided by the present invention further includes a plurality of conductive connecting columns 241, 242, 243, 244 disposed between the array substrate 20 and the cathode plate 22, wherein each Strip strips 221 or 222 or 223 or 224 are connected to a second via end of a corresponding cathode switching element 201 or 202 or 203 or 204 by a corresponding conductive connecting post 241 or 242 or 243 or 244.
  • the conductive connecting posts 241, 242, 243, and 244 are made of a conductive metal or a conductive non-metal.
  • the conductive connecting posts 241, 242, 243, and 244 may have a cylindrical shape, a strip shape, or the like. This is not limited.
  • the display panel 2 of the present invention further includes a cathode signal line VSS disposed on the array substrate 20, and the cathode signal line VSS is externally connected to a low voltage DC power source.
  • the first path end of each of the cathode switching elements 201, 202, 203, 204 is connected to the low voltage DC power source through the cathode signal line VSS.
  • the cathode signal line VSS may be formed in the same layer as the data lines D1, D2, D3, and D4, or may be separately formed in different layers, which is not limited in the present invention.
  • FIG. 5 is a schematic circuit diagram of an embodiment of a driving circuit of an OLED lighting unit of FIG.
  • the pixel area corresponding to an OLED light-emitting unit A on the array substrate 20 is taken as an example.
  • the pixel area includes: a first switching element T1, a second switching element T2, an OLED light-emitting unit 50, and a storage capacitor Cst;
  • the first switching element T1 and the second switching element T2 are respectively thin film transistors.
  • control terminal 510 of the first switching element T1 is electrically connected to a corresponding scan line G1, and the first path end 511 is electrically connected to a corresponding data line D1;
  • control end 520 of the second switching element T2 is electrically Connected to the second path end 512 of the first switching element T1, and the first path end 521 thereof is connected to the high voltage DC power source VDD;
  • the two ends of the storage capacitor Cst and the control terminal 520 and the second switch of the second switching element T2 respectively
  • the second via end 522 of the component T2 is coupled;
  • the anode 500 of the OLED lighting unit 50 is electrically connected to the second via end 522 of the second switching element T2, and a corresponding cathode strip 221 on the cathode plate 22 is used as the OLED to emit light.
  • the potential of the cathode 501 of unit 50 i.e., cathode 501 of OLED lighting unit 50, is provided by a corresponding cathode strip 221 on cathode plate 22.
  • the second switching element T2 is a driving switching element that drives the OLED lighting unit 50 to emit light
  • the driving current I k(Vgs-Vth) 2 of the OLED lighting unit 50, where k is the second switching element T2
  • FIG. 6 is a schematic structural diagram of an embodiment of an OLED display according to the present invention.
  • the OLED display 6 includes the OLED display panel 60 in any of the above embodiments, and details are not described herein again.
  • the OLED display panel provided by the present invention includes an array substrate and a cathode plate, wherein the cathode plate covers the array substrate, and the cathode plate is provided with a plurality of cathode strips parallel to each other, each of which is different from the prior art.
  • the cathode strip corresponds to a row of pixel regions on the array substrate to serve as a cathode of the OLED light emitting unit in the row of pixel regions;
  • the array substrate is further provided with a plurality of cathode switching elements, and the control terminals of each cathode switching element are electrically connected
  • the first path end is connected to the low-voltage DC power source, and the second path end is connected to a corresponding cathode strip;
  • the OLED display panel provided by the invention operates when the scan line is turned on line by line
  • the corresponding cathode switch element is turned on to supply the cathode voltage provided by the low-voltage DC power source to the corresponding cathode strip so that the pixel strip corresponding to the cathode strip
  • the OLED lighting unit inside works normally.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Electroluminescent Light Sources (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

一种OLED显示面板及OLED显示器，OLED显示面板（2）包括阵列基板（20）、与阵列基板对应设置的阴极板（22），阴极板上设置有多条彼此平行的阴极条（221、222、223、224），每条阴极条与阵列基板上的一行像素区域相对应以作为该行像素区域内发光单元的阴极；阵列基板上还设置有多个阴极开关元件（201、202、203、204），每个阴极开关元件的控制端电性连接至一条对应的扫描线，其第一通路端连接至低压直流电源，而其第二通路端连接至一条对应的阴极条。该方案能够降低阴极电阻。

Description

一种OLED显示面板及OLED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OLED显示面板及OLED显示器。
【背景技术】
OLED（有机发光二极管）具有自发光、功耗低、反应速度较快、对比度高、视角较广等特点，因此OLED在显示技术领域，具有广泛的应用场景。
请参阅图1，图1为现有的OLED显示面板一实施方式的结构示意图。OLED显示面板包括阵列基板10和阴极12，阴极12一般是一整块与阵列基板10对应设置的平面电极，低压直流电源所提供的阴极电压信号VSS依次通过阵列基板10、导电材料14后传输到阴极12，进而使得阴极12获得相应的阴极电位。
本发明的发明人在长期研发过程中发现，由于阴极12为一整块块状电极，阴极12电阻很高，会增大OLED的电压降（IR drop），导致OLED显示亮度降低，严重时会影响OLED的正常显示。
【发明内容】
本发明主要解决的技术问题是提供一种OLED显示面板及OLED显示器，能够降低阴极电阻。
为解决上述技术问题，本发明采用的一个技术方案是：提供一种OLED显示面板，包括：阵列基板，其包括多条扫描线和多条数据线，其中，所述多条扫描线与所述多条数据线相互交叉以将所述阵列基板划分成多个像素区域，且每个所述像素区域内设置有一个对应的OLED发光单元；阴极板，与所述阵列基板对应设置，包括透明基板和设置在所述透明基板面向所述阵列基板一侧的多条彼此平行的阴极条，其中，每条阴极条与所述阵列基板上的一行像素区域相对应以作为该行像素区域内的OLED发光单元的阴极；其中，所述阵列基板上设置有多个阴极开关元件，所述阴极开关元件为薄膜晶体管，每个所述阴极开关元件的控制端电性连接至一条对应的所述扫描线，其第一通路端连接至低压直流电源，而其第二通路端连接至一条对应的所述阴极条；当该条对应的扫描线被扫描时，对应的所述阴极开关元件导通以将所述低压直流电源所提供的阴极电压提供至对应的所述阴极条，以使该阴极条所对应的一行像素区域内的OLED发光单元正常工作。
为解决上述技术问题，本发明采用的另一个技术方案是：提供一种OLED显示面板，包括：阵列基板，其包括多条扫描线和多条数据线，其中，所述多条扫描线与所述多条数据线相互交叉以将所述阵列基板划分成多个像素区域，且每个所述像素区域内设置有一个对应的OLED发光单元；阴极板，与所述阵列基板对应设置，且所述阴极板上设置有多条彼此平行的阴极条，其中，每条阴极条与所述阵列基板上的一行像素区域相对应以作为该行像素区域内的OLED发光单元的阴极；其中，所述阵列基板上设置有多个阴极开关元件，每个所述阴极开关元件的控制端电性连接至一条对应的所述扫描线，其第一通路端连接至低压直流电源，而其第二通路端连接至一条对应的所述阴极条；当该条对应的扫描线被扫描时，对应的所述阴极开关元件导通以将所述低压直流电源所提供的阴极电压提供至对应的所述阴极条，以使该阴极条所对应的一行像素区域内的OLED发光单元正常工作。
为解决上述技术问题，本发明采用的另一个技术方案是：提供一种OLED显示器，所述OLED显示器包括上述任一实施例中的OLED显示面板。
本发明的有益效果是：区别于现有技术的情况，本发明所提供的OLED显示面板包括阵列基板和阴极板，其中，阴极板覆盖在阵列基板上，且阴极板上设置有多条彼此平行的阴极条，每条阴极条与阵列基板上的一行像素区域相对应以作为该行像素区域内的OLED发光单元的阴极；阵列基板上进一步设置有多个阴极开关元件，每个阴极开关元件的控制端电性连接至一条对应的扫描线，其第一通路端连接至低压直流电源，而其第二通路端连接至一条对应的阴极条；本发明所提供的OLED显示面板，其工作时扫描线是逐行打开的，当该条阴极条对应的扫描线被扫描时，对应的阴极开关元件导通以将低压直流电源所提供的阴极电压提供至对应的阴极条，以使该阴极条所对应的一行像素区域内的OLED发光单元正常工作。在某一时刻，其中某一扫描线打开时，只有其对应的一行像素区域内的OLED发光单元对应的一条阴极条能感受到阴极电压，该方式能大大降低阴极的电阻，从而降低由于阴极电阻产生的电压降，进而提高OLED的显示效果。
【附图说明】
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，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。其中：
图1是现有的OLED显示面板一实施方式的结构示意图；
图2是本发明OLED显示面板一实施方式的结构示意图；
图3是图2中阵列基板一实施方式的结构示意图；
图4是图2中阴极板一实施方式的结构示意图；
图5是图2中一OLED发光单元的驱动电路一实施方式的电路示意图；
图6是本发明OLED显示器一实施方式的结构示意图。
【具体实施方式】
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性的劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
请参阅图2，图2为本发明OLED显示面板一实施方式的结构示意图，该显示面板2包括阵列基板20和阴极板22，阴极板22覆盖在阵列基板20上。
具体的，可参见图3，图3为图2中阵列基板一实施方式的结构示意图。阵列基板20其包括多条扫描线G1、G2、G3、G4和多条数据线D1、D2、D3、D4，图3中仅示意画出4条扫描线和4条数据线，在其他实施例中，扫描线和数据线的个数还可为其他，本发明对此不作限定。其中，多条扫描线G1、G2、G3、G4与多条数据线D1、D2、D3、D4相互交叉以将阵列基板20划分成多个像素区域，且每个像素区域内设置有一个对应的OLED发光单元A、B、C、D、E、F、G、H、I、J、K、L。
可参见图4，图4为图2中阴极板一实施方式的结构示意图。阴极板22上设置有多条彼此平行的阴极条221、222、223、224，在一个实施方式中，上述阴极条221、222、223、224的材质为金属（例如，铜、铝等）或导电非金属（例如，氧化铟锡ITO、石墨等）；在另一个实施方式中，阴极板22还包括用于承载阴极条221、222、223、224的透明基板220，透明基板220的材质为非导电透明材质（例如，玻璃等），阴极条221、222、223、224设置于透明基板220朝向阵列基板20的一面上。其中，每条阴极条221、222、223、224与阵列基板20上的一行像素区域相对应以作为该行像素区域内的OLED发光单元的阴极；在一个应用场景中，每条阴极条221、222、223、224的长度方向与对应的扫描线G1、G2、G3、G3的方向相同；例如，在本实施例中，阴极条221与阵列基板20上的一行像素区域301对应，阴极条221的长度方向与该行像素区域301对应的扫描线G1的方向相同；阴极条222与阵列基板20上的一行像素区域302对应，阴极条222的长度方向与该行像素区域302对应的扫描线G2的方向相同；阴极条223与阵列基板20上的一行像素区域303对应，阴极条223的长度方向与该行像素区域303对应的扫描线G3的方向相同；阴极条224与阵列基板20上的一行像素区域304对应，阴极条224的长度方向与该行像素区域304对应的扫描线G4的方向相同。为保证像素区域内OLED发光单元的发光效果，每条阴极条221、222、223、224的宽度大于等于其所对应的一行OLED发光单元的宽度，以其中一个阴极条224为例，其宽度d1大于等于其所对应的一行像素区域304内的OLED发光单元J、K、L的宽度d2；在另一个应用场景中，由于各个阴极条221、222、223、224之间需电绝缘，还是以其中一个阴极条224为例，当阴极条224的宽度d1大于等于其对应的一行OLED发光单元J、K、L的宽度d2时，阴极条224的宽度d1还应当小于其对应的行像素区域304的宽度d3，即d2≤d1＜d3。
为保证阵列基板20与阴极板22的电连接，阵列基板20上进一步设置有多个阴极开关元件201、202、203、204，以其中一个阴极开关元件201为例，阴极开关元件201的控制端201a电性连接至其对应的扫描线G1，其第一通路端201b连接至低压直流电源，而其第二通路端201c连接至其对应的阴极条221；当阴极条221对应的扫描线G1被扫描时，即对应的阴极开关元件201的控制端201a输入脉冲电压，以使得对应的阴极开关元件201导通，导通后的阴极开关元件201将低压直流电源所提供的阴极电压提供至对应的阴极条221，以使该阴极条221所对应的一行像素区域301内的OLED发光单元A、B、C正常工作。其余阴极开关元件202、203、204与上述阴极开关元件201类似，在此不再赘述。由于本发明所提供的OLED显示面板2在工作时，其扫描线G1、G2、G3、G4是逐行打开的，某一时刻，其中某一扫描线（例如扫描线G1）打开时，只有其对应的一行像素区域（例如行像素区域301）内的OLED发光单元（例如OLED发光元件A、B、C）对应的一条阴极条（例如阴极条221）能感受到阴极电压，该方式能大大降低阴极的电阻，从而降低由于阴极电阻产生的电压降，进而提高OLED的显示效果。在一个应用场景中，上述阴极开关元件201、202、203、204分别为薄膜晶体管，可以是N型薄膜晶体管，也可以是P型薄膜晶体管。在有一个应用场景中，上述阴极开关元件201、202、203、204的第二通路端为一信号转接探点，该信号转接探点的材质为金属。
在另一个实施方式中，请继续参阅图2，本发明所提供的显示面板2还包括设置在阵列基板20与阴极板22之间多个导电连接柱241、242、243、244，其中，每条阴极条221或222或223或224通过一个对应的导电连接柱241或242或243或244而连接至一个对应的阴极开关元件201或202或203或204的第二通路端。在一个应用场景中，导电连接柱241、242、243、244的材质为导电金属或者导电非金属，导电连接柱241、242、243、244的形状可以是圆柱状、条状等，本发明对此不作限定。
在又一个实施方式中，请继续参阅图2或图3，本发明所提供的显示面板2还包括设置在阵列基板20上的阴极信号线VSS，阴极信号线VSS外接低压直流电源。其中，每个阴极开关元件201、202、203、204的第一通路端通过阴极信号线VSS而连接至低压直流电源。在一个应用场景中，阴极信号线VSS可以与数据线D1、D2、D3、D4同时在同一层中制备形成，也可以分别在不同层中制备形成，本发明对此不作限定。
下面，以OLED显示面板中OLED发光单元的工作过程对本发明作进一步描述。请参阅图5，图5为图2中一OLED发光单元的驱动电路一实施方式的电路示意图。以阵列基板20上的一个OLED发光单元A对应的像素区域为例介绍，该像素区域包括：第一开关元件T1、第二开关元件T2、OLED发光单元50、存储电容Cst；在一个应用场景中，第一开关元件T1和第二开关元件T2分别为薄膜晶体管。具体的，第一开关元件T1的控制端510电性连接至一条对应的扫描线G1，其第一通路端511电性连接至一条对应的数据线D1；第二开关元件T2的控制端520电性连接至第一开关元件T1的第二通路端512，而其第一通路端521连接至高压直流电源VDD；存储电容Cst的两端分别与第二开关元件T2的控制端520和第二开关元件T2的第二通路端522耦接；OLED发光单元50的阳极500电性连接至第二开关元件T2的第二通路端522，且利用阴极板22上的一条对应的阴极条221作为OLED发光单元50的阴极501，即OLED发光单元50的阴极501的电位由阴极板22上一条对应的阴极条221提供。在上述电路结构中，第二开关元件T2为驱动OLED发光单元50发光的驱动开关元件，OLED发光单元50的驱动电流I=k（Vgs-Vth）2，其中，k为第二开关元件T2的电流放大系数，由第二开关元件T2本身特性决定，Vth为第二开关元件T2的阈值电压，Vgs为第二开关元件T2的控制端520（即栅极G）和第二通路端522（即源极S）电压差，即Vgs=Vg-Vs；本申请所提供的显示面板中OLED发光单元50的阴极电位由阴极板22上一条对应的阴极条221提供，本申请中阴极条221电阻小于现有技术中一整块阴极电极的电阻，从而会使得OLED发光单元50的阴极501分压降低，进而会使得第二开关元件T2的源极S电压Vs降低，进而使得Vgs增大，从而可以提高OLED发光单元50的驱动电流I，进而提高OLED发光单元50的显示亮度，降低OLED的电压降。其余像素区域可参见上述OLED发光单元A对应的像素区域的介绍，在此不再赘述。
请参阅图6，图6为本发明OLED显示器一实施方式的结构示意图。该OLED显示器6包括上述任一实施例中的OLED显示面板60，在此不再赘述。
总而言之，区别于现有技术的情况，本发明所提供的OLED显示面板包括阵列基板和阴极板，其中，阴极板覆盖在阵列基板上，且阴极板上设置有多条彼此平行的阴极条，每条阴极条与阵列基板上的一行像素区域相对应以作为该行像素区域内的OLED发光单元的阴极；阵列基板上进一步设置有多个阴极开关元件，每个阴极开关元件的控制端电性连接至一条对应的扫描线，其第一通路端连接至低压直流电源，而其第二通路端连接至一条对应的阴极条；本发明所提供的OLED显示面板，其工作时扫描线是逐行打开的，当该条阴极条对应的扫描线被扫描时，对应的阴极开关元件导通以将低压直流电源所提供的阴极电压提供至对应的阴极条，以使该阴极条所对应的一行像素区域内的OLED发光单元正常工作。在某一时刻，其中某一扫描线打开时，只有其对应的一行像素区域内的OLED发光单元对应的一条阴极条能感受到阴极电压，该方式能大大降低阴极的电阻，从而降低由于阴极电阻产生的电压降，进而提高OLED的显示效果。
以上所述仅为本发明的实施方式，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (20)

  1. 一种OLED显示面板，其中，包括：
    阵列基板，其包括多条扫描线和多条数据线，其中，所述多条扫描线与所述多条数据线相互交叉以将所述阵列基板划分成多个像素区域，且每个所述像素区域内设置有一个对应的OLED发光单元；
    阴极板，与所述阵列基板对应设置，包括透明基板和设置在所述透明基板面向所述阵列基板一侧的多条彼此平行的阴极条，其中，每条阴极条与所述阵列基板上的一行像素区域相对应以作为该行像素区域内的OLED发光单元的阴极；
    其中，所述阵列基板上设置有多个阴极开关元件，所述阴极开关元件为薄膜晶体管，每个所述阴极开关元件的控制端电性连接至一条对应的所述扫描线，其第一通路端连接至低压直流电源，而其第二通路端连接至一条对应的所述阴极条；当该条对应的扫描线被扫描时，对应的所述阴极开关元件导通以将所述低压直流电源所提供的阴极电压提供至对应的所述阴极条，以使该阴极条所对应的一行像素区域内的OLED发光单元正常工作。
  2. 根据权利要求1所述的OLED显示面板，其中，每条所述阴极条的长度方向与对应的所述扫描线的方向相同；每条所述阴极条的宽度大于等于其所对应的一行OLED发光单元的宽度。
  3. 根据权利要求1所述的OLED显示面板，其中，每个像素区域包括：
    第一开关元件，其中，所述第一开关元件的控制端电性连接至一条对应的所述扫描线，其第一通路端电性连接至一条对应的所述数据线；
    第二开关元件，其中，所述第二开关元件的控制端电性连接至所述第一开关元件的第二通路端，而其第一通路端连接至高压直流电源；
    所述OLED发光单元，其阳极电性连接至所述第二开关元件的第二通路端，且利用所述阴极板上的一条对应的所述阴极条作为所述OLED发光单元的阴极；
    所述第一开关元件和所述第二开关元件分别为薄膜晶体管。
  4. 根据权利要求1所述的OLED显示面板，其中，所述阵列基板与所述阴极板之间设置有多个导电连接柱，其中，每条所述阴极条通过一个对应的所述导电连接柱而连接至一个对应的所述阴极开关元件的第二通路端。
  5. 根据权利要求1所述的OLED显示面板，其中，所述阵列基板上进一步设置有阴极信号线，其中，每个所述阴极开关元件的第一通路端通过所述阴极信号线而连接至所述低压直流电源。
  6. 一种OLED显示面板，其中，包括：
    阵列基板，其包括多条扫描线和多条数据线，其中，所述多条扫描线与所述多条数据线相互交叉以将所述阵列基板划分成多个像素区域，且每个所述像素区域内设置有一个对应的OLED发光单元；
    阴极板，与所述阵列基板对应设置，且所述阴极板上设置有多条彼此平行的阴极条，其中，每条阴极条与所述阵列基板上的一行像素区域相对应以作为该行像素区域内的OLED发光单元的阴极；
    其中，所述阵列基板上设置有多个阴极开关元件，每个所述阴极开关元件的控制端电性连接至一条对应的所述扫描线，其第一通路端连接至低压直流电源，而其第二通路端连接至一条对应的所述阴极条；当该条对应的扫描线被扫描时，对应的所述阴极开关元件导通以将所述低压直流电源所提供的阴极电压提供至对应的所述阴极条，以使该阴极条所对应的一行像素区域内的OLED发光单元正常工作。
  7. 根据权利要求6所述的OLED显示面板，其中，每条所述阴极条的长度方向与对应的所述扫描线的方向相同。
  8. 根据权利要求7所述的OLED显示面板，其中，每条所述阴极条的宽度大于等于其所对应的一行OLED发光单元的宽度。
  9. 根据权利要求6所述的OLED显示面板，其中，
    所述阴极板还包括透明基板，所述阴极条设置在所述透明基板面向所述阵列基板的一侧。
  10. 根据权利要求6所述的OLED显示面板，其中，每个像素区域包括：
    第一开关元件，其中，所述第一开关元件的控制端电性连接至一条对应的所述扫描线，其第一通路端电性连接至一条对应的所述数据线；
    第二开关元件，其中，所述第二开关元件的控制端电性连接至所述第一开关元件的第二通路端，而其第一通路端连接至高压直流电源；
    所述OLED发光单元，其阳极电性连接至所述第二开关元件的第二通路端，且利用所述阴极板上的一条对应的所述阴极条作为所述OLED发光单元的阴极。
  11. 根据权利要求10所述的OLED显示面板，其中，所述第一开关元件和所述第二开关元件分别为薄膜晶体管。
  12. 根据权利要求6所述的OLED显示面板，其中，所述阴极开关元件为薄膜晶体管。
  13. 根据权利要求6所述的OLED显示面板，其中，所述阵列基板与所述阴极板之间设置有多个导电连接柱，其中，每条所述阴极条通过一个对应的所述导电连接柱而连接至一个对应的所述阴极开关元件的第二通路端。
  14. 根据权利要求6所述的OLED显示面板，其中，所述阵列基板上进一步设置有阴极信号线，其中，每个所述阴极开关元件的第一通路端通过所述阴极信号线而连接至所述低压直流电源。
  15. 一种OLED显示器，其中，所述OLED显示器包括OLED显示面板，所述显示面板包括：
    阵列基板，其包括多条扫描线和多条数据线，其中，所述多条扫描线与所述多条数据线相互交叉以将所述阵列基板划分成多个像素区域，且每个所述像素区域内设置有一个对应的OLED发光单元；
    阴极板，与所述阵列基板对应设置，且所述阴极板上设置有多条彼此平行的阴极条，其中，每条阴极条与所述阵列基板上的一行像素区域相对应以作为该行像素区域内的OLED发光单元的阴极；
    其中，所述阵列基板上设置有多个阴极开关元件，每个所述阴极开关元件的控制端电性连接至一条对应的所述扫描线，其第一通路端连接至低压直流电源，而其第二通路端连接至一条对应的所述阴极条；当该条对应的扫描线被扫描时，对应的所述阴极开关元件导通以将所述低压直流电源所提供的阴极电压提供至对应的所述阴极条，以使该阴极条所对应的一行像素区域内的OLED发光单元正常工作。
  16. 根据权利要求15所述的OLED显示器，其中，每条所述阴极条的长度方向与对应的所述扫描线的方向相同；每条所述阴极条的宽度大于等于其所对应的一行OLED发光单元的宽度。
  17. 根据权利要求15所述的OLED显示器，其中，
    所述阴极板还包括透明基板，所述阴极条设置在所述透明基板面向所述阵列基板的一侧。
  18. 根据权利要求15所述的OLED显示器，其中，每个像素区域包括：
    第一开关元件，其中，所述第一开关元件的控制端电性连接至一条对应的所述扫描线，其第一通路端电性连接至一条对应的所述数据线；
    第二开关元件，其中，所述第二开关元件的控制端电性连接至所述第一开关元件的第二通路端，而其第一通路端连接至高压直流电源；
    所述OLED发光单元，其阳极电性连接至所述第二开关元件的第二通路端，且利用所述阴极板上的一条对应的所述阴极条作为所述OLED发光单元的阴极。
  19. 根据权利要求15所述的OLED显示器，其中，所述阵列基板与所述阴极板之间设置有多个导电连接柱，其中，每条所述阴极条通过一个对应的所述导电连接柱而连接至一个对应的所述阴极开关元件的第二通路端。
  20. 根据权利要求15所述的OLED显示器，其中，所述阵列基板上进一步设置有阴极信号线，其中，每个所述阴极开关元件的第一通路端通过所述阴极信号线而连接至所述低压直流电源。
PCT/CN2017/098443 2017-07-11 2017-08-22 一种oled显示面板及oled显示器 Ceased WO2019010759A1 (zh)

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