WO2022032857A1 - 自发光型像素电路及显示面板 - Google Patents

自发光型像素电路及显示面板 Download PDF

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Publication number
WO2022032857A1
WO2022032857A1 PCT/CN2020/121044 CN2020121044W WO2022032857A1 WO 2022032857 A1 WO2022032857 A1 WO 2022032857A1 CN 2020121044 W CN2020121044 W CN 2020121044W WO 2022032857 A1 WO2022032857 A1 WO 2022032857A1
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WIPO (PCT)
Prior art keywords
light
module
self
emitting
emitting unit
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PCT/CN2020/121044
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English (en)
French (fr)
Inventor
李艳
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Tcl华星光电技术有限公司
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Priority to US17/055,552 priority Critical patent/US11715412B2/en
Publication of WO2022032857A1 publication Critical patent/WO2022032857A1/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]
    • 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
    • G09G3/2007—Display of intermediate tones
    • G09G3/2074—Display of intermediate tones using sub-pixels
    • 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]
    • 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
    • G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
    • G09G2300/0809—Several active elements per pixel in active matrix panels
    • G09G2300/0842—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor
    • 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
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • G09G2320/0633—Adjustment of display parameters for control of overall brightness by amplitude modulation of the brightness of the illumination source
    • 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
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • G09G2320/064—Adjustment of display parameters for control of overall brightness by time modulation of the brightness of the illumination source

Definitions

  • the present application relates to the field of display technology, in particular to the field of self-luminous display technology, and in particular to a self-luminous pixel circuit and a display panel.
  • the self-luminous pixel circuit applied to the above-mentioned self-luminous display panel has a small luminous brightness range, resulting in a low number of grayscales, which cannot meet the market demand for further increasing the number of grayscales.
  • the present application provides a self-luminous pixel circuit, which solves the problem that the light-emitting luminance range of the self-luminous pixel circuit is small, resulting in a low number of gray scales.
  • the present application provides a self-luminous pixel circuit, which includes a driving module and a light-emitting module disposed between a first variable potential and a second variable potential; the driving module and the light-emitting module electrically connected; the driving module controls the magnitude of the current flowing through the light-emitting module according to the sequence; wherein, the light-emitting module includes a first light-emitting unit and a second light-emitting unit that are arranged in parallel with different brightness; when the second variable potential is greater than the first variable potential When the potential is low, the first light-emitting unit works at low-level brightness; when the first variable potential is greater than the second variable potential, the second light-emitting unit works at high-level brightness.
  • the second variable potential is connected to the first end of the light-emitting module; the second end of the light-emitting module is connected to the first end of the driving module; The second end is connected to the first variable potential.
  • the second variable potential is connected to the first end of the driving module; the second end of the driving module is connected to the first end of the light-emitting module; the first end of the light-emitting module The two ends are connected to the first variable potential connection.
  • the first light-emitting unit is configured with at least one first light-emitting device; the second light-emitting unit is configured with at least one first light-emitting device.
  • Two second light-emitting devices are connected in series; the duty cycles of the first light-emitting unit and the second light-emitting unit are different.
  • the self-luminous pixel circuit further includes a writing module; the control terminal of the writing module is connected to the scan signal; the input of the writing module The terminal is connected with the data signal; the output terminal of the writing module is connected with the control terminal of the driving module.
  • the self-luminous pixel circuit further includes a storage module; the first end of the storage module is connected to the output end of the writing module and the output end of the driving module.
  • the control terminal is connected; the second terminal of the storage module is connected with zero potential.
  • the driving module includes a first thin film transistor; the second variable potential is associated with the input end of the first light-emitting unit and the second light-emitting unit
  • the drain of the first thin film transistor is connected to the output end of the first light-emitting unit and the input end of the second light-emitting unit; the source of the first thin film transistor is connected to the first variable potential.
  • the writing module includes a second thin film transistor; the data signal is connected to the input end of the second thin film transistor; the scan signal is connected to the second thin film transistor The gate of the transistor is connected; the output end of the second thin film transistor is connected with the gate of the first thin film transistor.
  • the storage unit includes a storage capacitor; the first end of the storage capacitor, the output end of the second thin film transistor and the gate of the first thin film transistor The pole is connected; the second end of the storage capacitor is connected to zero potential.
  • the present application provides a display panel including the self-luminous pixel circuit in any one of the above embodiments.
  • the self-luminous pixel circuit provided by the present application can be switched to a higher brightness adjustment range through the first variable potential and the second variable potential, thereby further increasing the number of gray scales.
  • FIG. 1 is a schematic diagram of a first structure of a self-luminous pixel circuit according to an embodiment of the present application.
  • FIG. 2 is a schematic diagram of a second structure of a self-luminous pixel circuit according to an embodiment of the present application.
  • FIG. 3 is a schematic diagram of a third structure of a self-luminous pixel circuit according to an embodiment of the present application.
  • FIG. 4 is a circuit schematic diagram of the self-luminous pixel circuit shown in FIG. 3 .
  • FIG. 5 is a timing diagram of the self-luminous pixel circuit shown in FIG. 4 .
  • the present embodiment provides a self-luminous pixel circuit, which includes a driving module 20 connected between a first variable potential V1 and a second variable potential V2 and a The light-emitting module 10; the driving module 20 controls the magnitude of the current flowing through the light-emitting module 10 according to the time sequence; wherein, the light-emitting module 10 includes a first light-emitting unit 11 and a second light-emitting unit 12 arranged in parallel with different brightness; when the second variable potential When V2 is greater than the first variable potential V1, the first light-emitting unit 11 works at low-level brightness; when the first variable potential V1 is greater than the second variable potential V2, the second light-emitting unit 12 works at high-level brightness .
  • the light-emitting brightness of the second light-emitting unit 12 is greater than that of the first light-emitting unit 11 : the first light-emitting unit 11 is configured with at least one first light-emitting device LED1 ; The light-emitting unit 12 is configured with at least two second light-emitting devices LED2 connected in series; the duty cycles of the first light-emitting unit 11 and the second light-emitting unit 12 are different, that is, only one light-emitting unit of the two light-emitting units is in the light-emitting display at any time. condition.
  • the first light emitting device LED1 may be the same as, but not limited to, the second light emitting device LED2, and may also be different. Both the first light emitting device LED1 and the second light emitting device LED2 may be one of an organic electroluminescence device, a quantum dot electroluminescence device, and a micro electroluminescence device.
  • the potential difference between the first variable potential V1 and the second variable potential V2 may be different, and the potential difference may be based on the light-emitting device in the corresponding light-emitting unit. The number is adjusted correspondingly to meet the potential difference required for different light-emitting units to work.
  • the driving module 20 controls the magnitude of the current flowing through the light emitting module 10 according to the timing sequence: according to the charging state of the storage module 40 controlled by the writing module 30 and the discharging state of the storage module 40 by the driving module 20
  • the constructed sequence determines the light-emitting time and light-emitting brightness of the light-emitting module 10 .
  • the self-luminous pixel circuit further includes a writing module 30; the control terminal of the writing module 30 is connected to the scan signal SS; the input terminal of the writing module 30 is connected to the data signal DS; the output terminal of the writing module 30 is connected to the driving module 20 Control terminal connection.
  • the self-luminous pixel circuit further includes a storage module 40; the first end of the storage module 40 is connected to the output end of the writing module 30 and the control end of the driving module 20; the second end of the storage module 40 is connected to the zero Potential VSS connection.
  • the second variable potential V2 is connected to the first end of the light emitting module 10; the second end of the light emitting module 10 is connected to the first end of the driving module 20; the driving module 20 The second end of the is connected to the first variable potential V1.
  • the second variable potential V2 is connected to the first end of the driving module 20 ; the second end of the driving module 20 is connected to the first end of the light-emitting module 10 ; The second end is connected to the first variable potential V1.
  • the driving module 20 includes a first thin film transistor T1; the second variable potential V2 is connected to the input end of the first light-emitting unit 11 and the output end of the second light-emitting unit 12; The drain of the first thin film transistor T1 is connected to the output end of the first light emitting unit 11 and the input end of the second light emitting unit 12; the source of the first thin film transistor T1 is connected to the first variable potential V1.
  • the drain and source of the first thin film transistor T1 can be used interchangeably.
  • the writing module 30 includes a second thin film transistor T2; the data signal DS is connected to the input end of the second thin film transistor T2; the scan signal SS is connected to the gate of the second thin film transistor T2 connected; the output end of the second thin film transistor T2 is connected to the gate of the first thin film transistor T1.
  • the input end and the output end of the second thin film transistor T2 can be used interchangeably, and can be a different one of the source electrode or the drain electrode.
  • first thin film transistor T1 and the second thin film transistor T2 may be, but not limited to, N-type thin film transistors.
  • the storage unit includes a storage capacitor CS; the first terminal of the storage capacitor CS is connected to the output terminal of the second thin film transistor T2 and the gate of the first thin film transistor T1; the storage capacitor CS The second terminal of the is connected to the zero potential VSS.
  • the working process of the present application when the scan signal SS is in a high potential state, the second thin film transistor T2 is turned on, the high potential data signal DS is written into the storage capacitor CS, and when entering the light-emitting stage, the storage capacitor CS performs Discharge to open the gate of the second thin film transistor T2: if the second variable potential V2 is greater than the first variable potential V1, the second light-emitting unit 12 does not emit light at this time, and the first light-emitting unit 11 operates at low-level brightness , has the gray scale number in the traditional technical solution; when the first variable potential V1 is greater than the second variable potential V2, the first light-emitting unit 11 does not emit light at this time, and the second light-emitting unit 12 works at high-level brightness, Has a higher grayscale number.
  • the present application provides a display panel, which includes the self-luminous pixel circuit in any of the above embodiments.
  • a plurality of self-luminous pixel circuits are distributed in an array in the display panel.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Electroluminescent Light Sources (AREA)
  • Control Of El Displays (AREA)

Abstract

一种自发光型像素电路，其包括设置于第一可变电位（V1）、第二可变电位（V2）之间相连接的驱动模块（20）和发光模块（10），驱动模块（20）按照时序控制流经发光模块（10）的电流大小。自发光型像素电路通过第一可变电位（V1）和第二可变电位（V2）能够切换为更高的亮度调整范围，进而可以进一步提升其灰阶数。

Description

自发光型像素电路及显示面板 技术领域
本申请涉及显示技术领域，尤其涉及自发光显示技术领域，具体涉及一种自发光型像素电路及显示面板。
 背景技术
一直以来，显示面板不断在向着薄型化、轻型化和柔性化方向发展，有机电致发光、量子点电致发光、微型电致发光的自发光型显示面板在这些方面具有天然的优势。自发光型显示的发光器件，其发光亮度与施加的电压、电流均成正相关的关系。
在传统技术方案中，应用于上述自发光型显示面板的自发光型像素电路，发光亮度范围小，导致其灰阶数较低，无法满足进一步提升其灰阶数的市场需求。
 技术问题
本申请提供一种自发光型像素电路，解决了自发光型像素电路的发光亮度范围小，导致其灰阶数较低的问题。
 技术解决方案
第一方面，本申请提供一种自发光型像素电路，其包括设置于第一可变电位、第二可变电位之间的驱动模块和发光模块；所述驱动模块与所述发光模块电性连接；驱动模块按照时序控制流经发光模块的电流大小；其中，发光模块包括亮度不同且并联设置的第一发光单元和第二发光单元；当第二可变电位大于第一可变电位时，第一发光单元工作于低阶亮度；当第一可变电位大于第二可变电位时，第二发光单元工作于高阶亮度。
基于第一方面，在第一方面的第一种实施方式中，第二可变电位与发光模块的第一端连接；发光模块的第二端与驱动模块的第一端连接；驱动模块的第二端与第一可变电位连接。
基于第一方面，在第一方面的第二种实施方式中，第二可变电位与驱动模块的第一端连接；驱动模块的第二端与发光模块的第一端；发光模块的第二端与第一可变电位连接连接。
基于第一方面的第一种实施方式或者的第二种实施方式，在第一方面的第三种实施方式中，第一发光单元配置有至少一个第一发光器件；第二发光单元配置有至少两个依次串接的第二发光器件；第一发光单元与第二发光单元的工作周期相异。
基于第一方面的第三种实施方式，在第一方面的第四种实施方式中，自发光型像素电路还包括写入模块；写入模块的控制端与扫描信号连接；写入模块的输入端与数据信号连接；写入模块的输出端与驱动模块的控制端连接。
基于第一方面的第四种实施方式，在第一方面的第五种实施方式中，自发光型像素电路还包括存储模块；存储模块的第一端与写入模块的输出端和驱动模块的控制端连接；存储模块的第二端与零电位连接。
基于第一方面的第五种实施方式，在第一方面的第六种实施方式中，驱动模块包括第一薄膜晶体管；第二可变电位与第一发光单元的输入端和第二发光单元的输出端连接；第一薄膜晶体管的漏极与第一发光单元的输出端和第二发光单元的输入端连接；第一薄膜晶体管的源极与第一可变电位连接。
基于第一方面的第六种实施方式，在第一方面的第七种实施方式中，写入模块包括第二薄膜晶体管；数据信号与第二薄膜晶体管的输入端连接；扫描信号与第二薄膜晶体管的栅极连接；第二薄膜晶体管的输出端与第一薄膜晶体管的栅极连接。
基于第一方面的第七种实施方式，在第一方面的第八种实施方式中，存储单元包括存储电容；存储电容的第一端与第二薄膜晶体管的输出端和第一薄膜晶体管的栅极连接；存储电容的第二端与零电位连接。
第二方面，本申请提供一种显示面板，其包括上述任一实施方式中的自发光型像素电路。
 有益效果
本申请提供的自发光型像素电路，通过第一可变电位和第二可变电位能够切换为更高的亮度调整范围，进而可以进一步提升其灰阶数。
 附图说明
图1为本申请实施例提供的自发光型像素电路的第一种结构示意图。
图2为本申请实施例提供的自发光型像素电路的第二种结构示意图。
图3为本申请实施例提供的自发光型像素电路的第三种结构示意图。
图4为图3所示的自发光型像素电路的电路原理图。
图5为图4所示自发光型像素电路的时序示意图。
 本发明的实施方式
为使本申请的目的、技术方案及效果更加清楚、明确，以下参照附图并举实施例对本申请进一步详细说明。应当理解，此处所描述的具体实施例仅用以解释本申请，并不用于限定本申请。
如图1或者图2所示，本实施例提供了一种自发光型像素电路，其包括设置于第一可变电位V1、第二可变电位V2之间相连接的驱动模块20和发光模块10；驱动模块20按照时序控制流经发光模块10的电流大小；其中，发光模块10包括亮度不同且并联设置的第一发光单元11和第二发光单元12；当第二可变电位V2大于第一可变电位V1时，第一发光单元11工作于低阶亮度；当第一可变电位V1大于第二可变电位V2时，第二发光单元12工作于高阶亮度。
如图4或者图5所示，需要进行说明的是，第二发光单元12的发光亮度大于第一发光单元11的发光亮度：第一发光单元11配置有至少一个第一发光器件LED1；第二发光单元12配置有至少两个依次串接的第二发光器件LED2；第一发光单元11与第二发光单元12的工作周期相异即该两个发光单元在任一时刻只有一个发光单元处于发光显示状态。
可以理解的是，第一发光器件LED1可以但不限于与第二发光器件LED2相同，也可以为不同。第一发光器件LED1、第二发光器件LED2均可以为有机电致发光器件、量子点电致发光器件以及微型电致发光器件中的一种。
需要进行说明的是，不同的发光单元进行工作时，第一可变电位V1与第二可变电位V2之间的电位差可以不同，其电位差可以根据对应的发光单元中发光器件的数量进行对应调整，以满足不同发光单元进行工作时所需要的电位差。
如图3所示，可以理解的是，驱动模块20按照时序控制流经发光模块10的电流大小：根据写入模块30控制存储模块40的充电状态和驱动模块20对存储模块40的放电状态所构造出的时序来空发光模块10的发光时间和发光亮度。自发光型像素电路还包括写入模块30；写入模块30的控制端与扫描信号SS连接；写入模块30的输入端与数据信号DS连接；写入模块30的输出端与驱动模块20的控制端连接。
如图3所示，自发光型像素电路还包括存储模块40；存储模块40的第一端与写入模块30的输出端和驱动模块20的控制端连接；存储模块40的第二端与零电位VSS连接。
如图1所示，在其中一个实施例中，第二可变电位V2与发光模块10的第一端连接；发光模块10的第二端与驱动模块20的第一端连接；驱动模块20的第二端与第一可变电位V1连接。
如图2所示，在其中一个实施例中，第二可变电位V2与驱动模块20的第一端连接；驱动模块20的第二端与发光模块10的第一端；发光模块10的第二端与第一可变电位V1连接连接。
如图4所示，在其中一个实施例中，驱动模块20包括第一薄膜晶体管T1；第二可变电位V2与第一发光单元11的输入端和第二发光单元12的输出端连接；第一薄膜晶体管T1的漏极与第一发光单元11的输出端和第二发光单元12的输入端连接；第一薄膜晶体管T1的源极与第一可变电位V1连接。
可以理解的是，保证第一薄膜晶体管T1可以打开的情况下，即其阈值电压大于栅极与源极之间的电压，第一薄膜晶体管T1的漏极和源极可以调换使用。
如图4所示，在其中一个实施例中，写入模块30包括第二薄膜晶体管T2；数据信号DS与第二薄膜晶体管T2的输入端连接；扫描信号SS与第二薄膜晶体管T2的栅极连接；第二薄膜晶体管T2的输出端与第一薄膜晶体管T1的栅极连接。
可以理解的是，第二薄膜晶体管T2的输入端和输出端可以调换使用，且可以为源极或者漏极中不同的一种。
需要进行说明的是，第一薄膜晶体管T1、第二薄膜晶体管T2可以但不限于为N型薄膜晶体管。
如图4所示，在其中一个实施例中，存储单元包括存储电容CS；存储电容CS的第一端与第二薄膜晶体管T2的输出端和第一薄膜晶体管T1的栅极连接；存储电容CS的第二端与零电位VSS连接。
如图5所示，本申请的工作过程：扫描信号SS处于高电位状态时，第二薄膜晶体管T2打开，高电位的数据信号DS写入到存储电容CS，进入发光阶段时，存储电容CS进行放电以打开第二薄膜晶体管T2的栅极：若第二可变电位V2大于第一可变电位V1时，此时第二发光单元12不发光，第一发光单元11工作于低阶亮度，具有传统技术方案中的灰阶数；当第一可变电位V1大于第二可变电位V2时，此时第一发光单元11不发光，第二发光单元12工作于高阶亮度，具有更高的灰阶数。
在其中一个实施例中，本申请提供一种显示面板，其包括上述任一实施例中的自发光型像素电路。
可以理解的是，多个自发光型像素电路在所述显示面板内呈阵列分布。
可以理解的是，对本领域普通技术人员来说，可以根据本申请的技术方案及其发明构思加以等同替换或改变，而所有这些改变或替换都应属于本申请所附的权利要求的保护范围。

Claims (20)

  1. 一种自发光型像素电路，其中，包括设置于第一可变电位、第二可变电位之间的驱动模块和发光模块；所述驱动模块与所述发光模块电性连接；所述驱动模块按照时序控制流经所述发光模块的电流大小；
    其中，所述发光模块包括亮度不同且并联设置的第一发光单元和第二发光单元；当所述第二可变电位大于所述第一可变电位时，所述第一发光单元工作于低阶亮度；当所述第一可变电位大于所述第二可变电位时，所述第二发光单元工作于高阶亮度；
    其中，所述第二可变电位与所述驱动模块的第一端连接；所述驱动模块的第二端与所述发光模块的第一端；所述发光模块的第二端与所述第一可变电位连接连接。
  2. 根据权利要求1所述的自发光型像素电路，其中，所述第一发光单元配置有至少一个第一发光器件；所述第二发光单元配置有至少两个依次串接的第二发光器件；所述第一发光单元与所述第二发光单元的工作周期相异。
  3. 根据权利要求2所述的自发光型像素电路，其中，所述自发光型像素电路还包括写入模块；
    所述写入模块的控制端与扫描信号连接；所述写入模块的输入端与数据信号连接；所述写入模块的输出端与所述驱动模块的控制端连接。
  4. 根据权利要求3所述的自发光型像素电路，其中，所述自发光型像素电路还包括存储模块；
    所述存储模块的第一端与所述写入模块的输出端和所述驱动模块的控制端连接；所述存储模块的第二端与零电位连接。
  5. 根据权利要求4所述的自发光型像素电路，其中，所述驱动模块包括第一薄膜晶体管；
    所述第二可变电位与所述第一发光单元的输入端和所述第二发光单元的输出端连接；所述第一薄膜晶体管的漏极与所述第一发光单元的输出端和所述第二发光单元的输入端连接；所述第一薄膜晶体管的源极与所述第一可变电位连接。
  6. 根据权利要求5所述的自发光型像素电路，其中，所述写入模块包括第二薄膜晶体管；
    所述数据信号与所述第二薄膜晶体管的输入端连接；所述扫描信号与所述第二薄膜晶体管的栅极连接；所述第二薄膜晶体管的输出端与所述第一薄膜晶体管的栅极连接。
  7. 根据权利要求6所述的自发光型像素电路，其中，所述存储单元包括存储电容；
    所述存储电容的第一端与所述第二薄膜晶体管的输出端和所述第一薄膜晶体管的栅极连接；所述存储电容的第二端与零电位连接。
  8. 一种自发光型像素电路，其中，包括设置于第一可变电位、第二可变电位之间的驱动模块和发光模块；所述驱动模块与所述发光模块电性连接；所述驱动模块按照时序控制流经所述发光模块的电流大小；
    其中，所述发光模块包括亮度不同且并联设置的第一发光单元和第二发光单元；当所述第二可变电位大于所述第一可变电位时，所述第一发光单元工作于低阶亮度；当所述第一可变电位大于所述第二可变电位时，所述第二发光单元工作于高阶亮度。
  9. 根据权利要求8所述的自发光型像素电路，其中，所述第二可变电位与所述发光模块的第一端连接；所述发光模块的第二端与所述驱动模块的第一端连接；所述驱动模块的第二端与所述第一可变电位连接。
  10. 根据权利要求9所述的自发光型像素电路，其中，所述第一发光单元配置有至少一个第一发光器件；所述第二发光单元配置有至少两个依次串接的第二发光器件；所述第一发光单元与所述第二发光单元的工作周期相异。
  11. 根据权利要求10所述的自发光型像素电路，其中，所述自发光型像素电路还包括写入模块；
    所述写入模块的控制端与扫描信号连接；所述写入模块的输入端与数据信号连接；所述写入模块的输出端与所述驱动模块的控制端连接。
  12. 根据权利要求11所述的自发光型像素电路，其中，所述自发光型像素电路还包括存储模块；
    所述存储模块的第一端与所述写入模块的输出端和所述驱动模块的控制端连接；所述存储模块的第二端与零电位连接。
  13. 根据权利要求12所述的自发光型像素电路，其中，所述驱动模块包括第一薄膜晶体管；
    所述第二可变电位与所述第一发光单元的输入端和所述第二发光单元的输出端连接；所述第一薄膜晶体管的漏极与所述第一发光单元的输出端和所述第二发光单元的输入端连接；所述第一薄膜晶体管的源极与所述第一可变电位连接。
  14. 根据权利要求13所述的自发光型像素电路，其中，所述写入模块包括第二薄膜晶体管；
    所述数据信号与所述第二薄膜晶体管的输入端连接；所述扫描信号与所述第二薄膜晶体管的栅极连接；所述第二薄膜晶体管的输出端与所述第一薄膜晶体管的栅极连接。
  15. 根据权利要求14所述的自发光型像素电路，其中，所述存储单元包括存储电容；
    所述存储电容的第一端与所述第二薄膜晶体管的输出端和所述第一薄膜晶体管的栅极连接；所述存储电容的第二端与零电位连接。
  16. 一种显示面板，其中，包括如权利要求8所述的自发光型像素电路。
  17. 根据权利要求16所述的显示面板，其中，所述显示面板包括多个呈阵列分布的所述自发光型像素电路。
  18. 根据权利要求17所述的显示面板，其中，所述第二可变电位与所述发光模块的第一端连接；所述发光模块的第二端与所述驱动模块的第一端连接；所述驱动模块的第二端与所述第一可变电位连接。
  19. 根据权利要求18所述的显示面板，其中，所述第一发光单元配置有至少一个第一发光器件；所述第二发光单元配置有至少两个依次串接的第二发光器件；所述第一发光单元与所述第二发光单元的工作周期相异。
  20. 根据权利要求19所述的显示面板，其中，所述自发光型像素电路还包括写入模块；
    所述写入模块的控制端与扫描信号连接；所述写入模块的输入端与数据信号连接；所述写入模块的输出端与所述驱动模块的控制端连接。
PCT/CN2020/121044 2020-08-11 2020-10-15 自发光型像素电路及显示面板 WO2022032857A1 (zh)

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