WO2015010374A1 - 阵列基板及其驱动方法、显示装置 - Google Patents

阵列基板及其驱动方法、显示装置 Download PDF

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Publication number
WO2015010374A1
WO2015010374A1 PCT/CN2013/085228 CN2013085228W WO2015010374A1 WO 2015010374 A1 WO2015010374 A1 WO 2015010374A1 CN 2013085228 W CN2013085228 W CN 2013085228W WO 2015010374 A1 WO2015010374 A1 WO 2015010374A1
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Prior art keywords
data
electrode
transistor
array substrate
lines
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PCT/CN2013/085228
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English (en)
French (fr)
Inventor
徐向阳
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BOE Technology Group Co Ltd
Hefei BOE Optoelectronics Technology Co Ltd
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BOE Technology Group Co Ltd
Hefei BOE Optoelectronics Technology Co Ltd
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Priority to US14/370,534 priority Critical patent/US9666136B2/en
Publication of WO2015010374A1 publication Critical patent/WO2015010374A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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]
    • G09G3/3266—Details of drivers for scan electrodes
    • 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
    • G09G3/3233—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 with pixel circuitry controlling the current through the light-emitting element
    • 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
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0243—Details of the generation of driving signals
    • G09G2310/0245—Clearing or presetting the whole screen independently of waveforms, e.g. on power-on
    • 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
    • G09G2320/0257—Reduction of after-image effects
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02—Details of power systems and of start or stop of display operation
    • G09G2330/027—Arrangements or methods related to powering off a display

Definitions

  • the present invention relates to the field of display technologies, and in particular, to an array substrate, a driving method thereof, and a display device. Background technique
  • OLED Organic Light Emitting Diode
  • the principle of OLED (Organic Light Emitting Diode) display is to apply an electric field to the anode and cathode on both sides of the electroluminescent layer. Under the driving of the electric field, electrons and holes are transmitted from the cathode and the anode respectively.
  • the layer and the hole transport layer migrate to the light-emitting layer and meet in the light-emitting layer to form excitons and excite the light-emitting molecules, which are subjected to radiation relaxation to emit visible light.
  • LCD liquid crystal display
  • OLED displays are increasingly used for high performance due to their self-illumination, fast response, wide viewing angle and the ability to be fabricated on flexible substrates. Display in the field.
  • the OLED can be divided into passive matrix driven organic light emitting diode (PMOLED) and active matrix driving (OLED).
  • PMOLED passive matrix driven organic light emitting diode
  • OLED active matrix driving
  • Conventional PMOLEDs generally require a reduction in the driving time of a single pixel as the size of the display device increases, and thus it is necessary to increase the transient current, resulting in a significant increase in power consumption.
  • each OLED scans the input current progressively through a thin film transistor TFT (Thin Film Transistor) switching circuit, which can solve these problems.
  • TFT Thin Film Transistor
  • AMOLED is an active driving method
  • there is a charge remaining on the pixel capacitor which will cause the pixel to maintain the voltage before the shutdown at the moment of shutdown, thereby causing the panel to have a residual image, forming a so-called shutdown residue. Shadow. Summary of the invention
  • Embodiments of the present invention provide an array substrate, a driving method thereof, and a display device for eliminating a shutdown image of an AMOLED display.
  • the embodiment of the present invention adopts the following technical solutions:
  • An aspect of an embodiment of the present invention provides an array substrate, including: a scan driving unit for providing a line scan signal to a plurality of gate lines, and a data driving unit for providing a data signal to the plurality of data lines, The plurality of gate lines and the plurality of data lines are vertically intersected to form a pixel unit array arranged in a matrix form.
  • the array substrate further includes: a control unit, wherein the control unit is electrically connected to the scan driving unit and the data driving unit respectively.
  • a display device comprising the array substrate as described above.
  • an array substrate driving method including: when a display device is powered on, a scan driving unit supplies a row scan signal to a plurality of gate lines, and the data driving unit sends the scanned plurality of data lines Providing a data signal, the plurality of gate lines and the plurality of data lines are laterally intersected to form a pixel unit array arranged in a matrix form; when the display device is powered off, the control unit controls the scan driving unit to turn on each of the pixels a unit, the charge stored inside the pixel unit is quickly released through the data line.
  • the array substrate and the driving method thereof and the display device provided by the embodiments of the present invention add a control unit based on the design of the existing array substrate, and the control unit is electrically connected to the scan driving unit and the data driving unit respectively, and is used for the display device.
  • the scan driving unit is controlled to turn on each pixel unit, so that the charge stored inside the pixel unit can be quickly released through the data line. In this way, the residual picture caused by the presence of electric charge inside the pixel is avoided at the moment after the display device is turned off, the shutdown image of the AMOLED display is effectively eliminated, and the display quality of the display device is improved.
  • FIG. 1 is a schematic structural view of an array substrate according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a circuit connection structure of an array substrate according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of an array substrate in a display device according to an embodiment of the present invention
  • FIG. 4 is a schematic flow chart of an array substrate driving method according to an embodiment of the present invention.
  • an array substrate includes: a scan driving unit 110 for supplying a row scan signal to a plurality of gate lines 111, and a data signal for supplying data signals to the plurality of data lines 121.
  • the data driving unit 120, the plurality of gate lines 111 and the plurality of data lines 121 are vertically and horizontally intersected to form an array of pixel units 130 arranged in a matrix form.
  • the array substrate further includes: a control unit 140, wherein the control unit 140 is electrically connected to the scan driving unit 110 and the data driving unit 120, respectively, for controlling the scan driving unit 110 to turn on each pixel unit 130 when the display device is powered off. The charge stored inside the pixel unit 130 is quickly released through the data line 121.
  • the array substrate provided by the embodiment of the present invention adds a control unit to the scan array driving unit and the data driving unit by using the existing array substrate design, and is used for controlling the scan driving when the display device is powered off.
  • the unit turns on each pixel unit so that the charge stored inside the pixel unit can be quickly released through the data line. In this way, the residual picture caused by the presence of electric charge inside the pixel is avoided at the moment after the display device is turned off, the shutdown image of the AMOLED display is effectively eliminated, and the display quality of the display device is improved.
  • the array substrate may further include a pixel unit 130 internal power supply line VDD.
  • the control unit 140 can also be used to ground the power line VDD when the display device is powered off.
  • the display device can adopt various OLED displays. Since the OLED device is an active device, it is generally required to additionally provide a power line VDD for powering the active OLED device. When the display device is powered off, the power line VDD is usually difficult to turn off in time, which also causes the internal charge of the pixel unit to generate a shutdown image.
  • the design of such a control unit 140 can quickly ground the power line VDD when the display device is powered off, thereby further avoiding the internal residual charge of the pixel unit, further improving the display quality of the display device.
  • the pixel unit 130 may specifically include: a first transistor 131, a second transistor 132, a storage capacitor 133, and a light emitting device 134.
  • the gate of the first transistor 131 is connected to the gate line 111, the first electrode of which is connected to the gate of the second transistor 132, and the second electrode of which is connected to the data line 121.
  • the first pole of the second transistor 132 is connected to the anode of the light emitting device 134, and the second pole thereof is connected to the power line VDD.
  • One end of the storage capacitor 133 is connected to the gate of the second transistor 132, and the other end thereof is connected to the cathode of the light emitting device 134.
  • the negative electrode of the light emitting device 134 is also connected to a common electrode or to ground. It should be noted that all the transistors used in all the embodiments of the present invention may be thin film transistors or field effect transistors or other devices having the same characteristics. Since the source and the drain of the transistors used herein are symmetrical, the source, There is no difference in the drain.
  • the transistor in order to distinguish the two poles of the transistor except the gate, one of the poles is referred to as a source and the other pole is referred to as a drain.
  • the transistor can be classified into an N-type transistor or a P-type transistor according to the characteristics of the transistor.
  • a first pole thereof may be a source
  • a second pole may be a drain.
  • a P-type transistor when used, a first pole thereof may be a drain and a second pole. Can be the source.
  • all of the transistors are described by taking an N-type transistor as an example.
  • the scan driving unit 110 may include: a first scan signal line GO, a second scan signal line GE, and a voltage line Vgh corresponding to the first scan signal line GO and the second scan signal line GE, respectively.
  • the gate of the fourth transistor 113 is connected to the control unit 140, the first pole of which is connected to a gate line ill, and the second pole of which is connected to a scanning signal line.
  • the first scan signal line GO is used to supply a row scan signal to the gate lines 111 of the odd rows row by row through the fourth transistor 113.
  • the second scan signal line GE is for supplying a line scan signal to the gate lines 111 of the even rows row by row through the fourth transistor 113.
  • the data driving unit 120 may include: a plurality of data signal lines DR, DG, DB, a switching signal line S, and a plurality of fifth transistors 122 corresponding to the data signal lines.
  • the gate of the fifth transistor 122 is connected to the switching signal line S, the first pole is connected to one data line 121, and the second pole is connected to one of the plurality of data signal lines DR, DG, DB.
  • Each data signal line is used to input a data signal of one color.
  • the description is made by taking the data signal line including the red data signal line DR, the green data signal line DG, and the blue data signal line DB as three data signal lines.
  • Each of the data signal lines corresponds to one column of pixel units, and each of the three columns of pixel units respectively displays red, green and blue colors, thereby realizing color display.
  • the control unit 140 may further include: a control signal line Xon, a sixth transistor 142, and a seventh transistor 143 for receiving an output signal of the timer 141.
  • the gate of the sixth transistor 142 is connected to the control signal line Xon, the first electrode of which is connected to the power supply line VDD, and the second electrode of which is connected to the ground GND.
  • the gate of the seventh transistor 143 is connected to the control signal line Xon, the first pole of which is connected to the data signal line, and the second pole of which is grounded.
  • the timer 141 can be implemented by using all electronic components or circuit structures having a timing trigger function including a timer control register Tcon (Timer Control Register).
  • a high-level pulse signal can be synchronously generated by the Tcon to input a control signal line Xon, which instantaneously turns on all the gate drive signals, so that each pixel The cells are all turned on, and the data line signal is pulled low, the charge in the pixel capacitor is released, and the OLED power supply line is grounded, so that the OLED driving transistor is turned off, and the OLED is extinguished, thereby eliminating the shutdown. Shadow phenomenon. Specifically, when the display device is turned off, as shown in FIG. At the moment of shutdown, by
  • a display device includes an organic light emitting display, other displays, and the like, and the display device includes any of the array substrates described above.
  • the display device of the embodiment of the present invention may be a display device having a current-driven light-emitting device including an LED display or an OLED display.
  • the display device of the embodiment of the invention includes an array substrate.
  • the array substrate is electrically connected to the scan driving unit and the data driving unit by using the existing array substrate design, and is used for when the display device is broken.
  • the scanning drive unit is controlled to turn on each pixel unit, so that the charge stored inside the pixel unit can be quickly released through the data line. In this way, avoiding the moment after the display device is turned off.
  • the residual picture due to the presence of electric charge inside the pixel effectively eliminates the shutdown image of the AMOLED display and improves the display quality of the display device.
  • FIG. 4 is a schematic flow chart showing an array substrate driving method according to an embodiment of the present invention.
  • the array substrate driving method includes the following operations:
  • step S401 when the display device is powered on, the scan driving unit supplies a row scan signal to the plurality of gate lines, and the data driving unit supplies the plurality of scanned lines.
  • the data line provides a data signal, and the plurality of gate lines and the plurality of data lines are vertically and horizontally intersected to form a pixel unit array ⁇ I arranged in a matrix form.
  • step S402 when the display device is powered off, the control unit controls the scan driving unit to turn on each of the pixel units, and the charge stored inside the pixel unit is quickly released through the data line.
  • the array substrate driving method of the embodiment of the present invention the array substrate is added with a control unit based on the design of the existing array substrate, and the control unit is electrically connected to the scan driving unit and the data driving unit, respectively, when the display device is powered off.
  • the scan driving unit is controlled to turn on each pixel unit so that the charge stored inside the pixel unit can be quickly released through the data line. In this way, the residual picture caused by the presence of electric charge inside the pixel at the moment after the display device is turned off is avoided, the shutdown image of the AMOLED display is effectively eliminated, and the display quality of the display device is improved.
  • the array substrate may further include a power supply line for supplying power to the inside of the pixel unit.
  • the method further includes: in step S403, when the display device is powered off, the control unit grounds the power supply line that supplies power to the inside of the pixel unit.
  • the display device can adopt various OLED displays. Since the OLED device is an active device, it is generally required to additionally provide a power supply line VDD for powering the active OLED device. When the power is off, the power line VDD is usually difficult to turn off in time, which also causes the internal charge of the pixel unit to generate a shutdown image.
  • control unit 140 The design of such a control unit 140 can be adopted The power line VDD is quickly grounded when the display device is powered off, thereby further avoiding internal residual charge of the pixel unit, further improving the display quality of the display device.
  • the foregoing steps include the steps of the foregoing method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

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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

一种阵列基板，包括：用于向多条栅线（111）提供行扫描信号的扫描驱动单元（110）和用于向多条数据线（121）提供数据信号的数据驱动单元（120），多条栅线（111）和多条数据线（121）横纵交叉形成矩阵形式排列的像素单元（130）阵列，还包括：控制单元（140），控制单元（140）分别与扫描驱动单元（110）以及数据驱动单元（120）电连接，用于当显示装置断电时，控制扫描驱动单元（110）开启每一个像素单元（130），像素单元（130）内部存储的电荷通过数据线（121）快速释放，从而用以消除AMOLED显示器的关机残影。还公开了一种阵列基板驱动方法和显示装置。

Description

阵列基板及其驱动方法、 显示装置 技术领域
本发明涉及显示技术领域， 尤其涉及一种阵列基板及其驱动方 法、 显示装置。 背景技术
有机发光二极管 OLED ( Organic Light Emitting Diode )显示器的 发光原理是通过向电致发光层两侧的阳极和阴极施加一定的电场，在 电场的驱动下，电子和空穴分别从阴极和阳极通过电子传输层和空穴 传输层迁移到发光层， 并在发光层中相遇， 从而形成激子并使发光分 子激发，后者经过辐射弛豫而发出可见光。与传统的液晶显示器 LCD ( Liquid Crystal Display ) 相比， OLED显示器因其所具有的自发光、 快速响应、宽视角和可制作在柔性村底上等特点而越来越多地被应用 于高性能显示领域当中。
OLED 按驱动方式可分为无源矩阵驱动有机发光二极管 PMOLED(Passive Matrix Driving OLED)和有源矩阵驱动有机发光二 极管 AMOLED ( Active Matrix Driving OLED )两种。传统的 PMOLED 随着显示装置尺寸的增大， 通常需要降低单个像素的驱动时间， 因而 需要增大瞬态电流， 从而导致功耗的大幅上升。 而在 AMOLED技术 中， 每个 OLED均通过薄膜晶体管 TFT (Thin Film Transistor)开关电 路逐行扫描输入电流， 可以 ^艮好地解决这些问题。 但是由于 AMOLED为有源驱动方式， 在关机的瞬间， 像素电容 上残留有电荷，这些电荷会使得像素在关机的一瞬间保持在关机前的 电压， 从而使得面板有画面残留， 形成所谓的关机残影。 发明内容
本发明的实施例提供一种阵列基板及其驱动方法、 显示装置， 用 以消除 AMOLED显示器的关机残影。 为达到解决上述现有技术中存在的技术问题，本发明的实施例采 用如下技术方案： 本发明实施例的一方面， 提供一种阵列基板， 包括： 用于向多条 栅线提供行扫描信号的扫描驱动单元，以及用于向多条数据线提供数 据信号的数据驱动单元，所述多条栅线和多条数据线横纵交叉形成矩 阵形式排列的像素单元阵列， 该阵列基板还包括： 控制单元，所述控制单元分别与所述扫描驱动单元以及所述数据 驱动单元电连接， 用于当显示装置断电时， 控制所述扫描驱动单元开 启每一个所述像素单元，所述像素单元内部存储的电荷通过所述数据 线快速释放。 本发明实施例的另一方面， 提供一种显示装置， 所述显示装置包 括如上所述阵列基板。 本发明实施例的又一方面， 提供一种阵列基板驱动方法， 包括： 当显示装置通电时， 扫描驱动单元向多条栅线提供行扫描信号， 数据驱动单元向被扫描到的多条数据线提供数据信号，所述多条栅线 和多条数据线横纵交叉形成矩阵形式排列的像素单元阵列； 当所述显示装置断电时，控制单元控制所述扫描驱动单元开启每 一个所述像素单元，所述像素单元内部存储的电荷通过所述数据线快 速释放。 本发明实施例提供的阵列基板及其驱动方法、 显示装置， 通过在 现有阵列基板设计的基础上增加控制单元，该控制单元分别与扫描驱 动单元以及数据驱动单元电连接， 用于当显示装置断电时， 控制扫描 驱动单元开启每一个像素单元，从而使得像素单元内部存储的电荷可 以通过数据线快速得到释放。 这样一来， 避免了在显示装置关机后的 瞬间， 像素内部由于存在电荷而产生的画面残留， 有效消除了 AMOLED显示器的关机残影， 提高了显示装置的显示质量。 附图说明 为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对 实施例或现有技术描述中所需要使用的附图作筒单地介绍， 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。
图 1为本发明实施例的一种阵列基板的结构示意图； 图 2为本发明实施例的一种阵列基板的电路连接结构示意图； 图 3 为本发明实施例的一种阵列基板在显示装置断电时的信号 波形图； 图 4为本发明实施例的一种阵列基板驱动方法的流程示意图。 具体实施方式 下面将结合附图， 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， 而不是全部的实 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。
如图 1所示， 按照本发明实施例的一种阵列基板， 包括： 用于向 多条栅线 111提供行扫描信号的扫描驱动单元 110 , 以及用于向多条 数据线 121提供数据信号的数据驱动单元 120, 多条栅线 111和多条 数据线 121横纵交叉形成矩阵形式排列的像素单元 130阵列。该阵列 基板还包括： 控制单元 140, 该控制单元 140分别与扫描驱动单元 110以及数 据驱动单元 120电连接， 用于当显示装置断电时， 控制该扫描驱动单 元 110开启每一个像素单元 130 , 该像素单元 130内部存储的电荷通 过数据线 121快速释放。 本发明实施例提供的阵列基板，通过在现有阵列基板设计的基础 上增加控制单元，该控制单元分别与扫描驱动单元以及数据驱动单元 电连接， 用于当显示装置断电时， 控制扫描驱动单元开启每一个像素 单元，从而使得像素单元内部存储的电荷可以通过数据线快速得到释 放。 这样一来， 避免了在显示装置关机后的瞬间， 像素内部由于存在 电荷而产生的画面残留， 有效消除了 AMOLED显示器的关机残影， 提高了显示装置的显示质量。 进一步地， 如图 2所示， 该阵列基板还可以包括用于向像素单元 130内部供电的电源线 VDD。 控制单元 140还可以用于当显示装置断电时， 将电源线 VDD接 地。 具体地， 在本发明实施例中， 显示装置可以采用各种 OLED 显 示器， 由于 OLED器件为有源器件， 因此通常需要额外设置一条用于 向有源 OLED器件供能的电源线 VDD。 当显示装置断电时， 该电源 线 VDD通常难以做到及时地关闭， 这样同样会导致像素单元的内部 存在电荷， 从而产生关机残影。 采用这样一种控制单元 140的设计可 以在显示装置断电时迅速将电源线 VDD接地， 从而进一步避免了像 素单元的内部残留电荷， 进一步提高了显示装置的显示质量。 进一步地， 如图 2所示， 像素单元 130具体可以包括： 第一晶体 管 131、 第二晶体管 132、 存储电容 133以及发光器件 134。 该第一晶体管 131的栅极连接栅线 111 , 其第一极连接第二晶体 管 132的栅极， 其第二极连接数据线 121。
该第二晶体管 132的第一极连接发光器件 134的正极，其第二极 连接电源线 VDD。 存储电容 133的一端连接第二晶体管 132的栅极，其另一端连接 发光器件 134的负极。 发光器件 134的负极还连接公共电极或接地。 需要说明的是，本发明所有实施例中采用的晶体管均可以为薄膜 晶体管或场效应管或其他特性相同的器件，由于这里采用的晶体管的 源极、 漏极是对称的， 所以其源极、 漏极是没有区别的。 在本发明实 施例中， 为区分晶体管除栅极之外的两极， 将其中一极称为源极， 另 一极称为漏极。 此外， 按照晶体管的特性区分可以将晶体管分为 N 型晶体管或 P型晶体管。 在本发明实施例中， 当采用 N型晶体管时， 其第一极可以是源极， 第二极可以是漏极， 当采用 P型晶体管时， 其 第一极可以是漏极，第二极可以是源极。在本发明实施例的 AMOLED 像素电路中， 所有晶体管均是以 N 型晶体管为例进行的说明， 可以 想到的是在采用 P 型晶体管实现时是本领域技术人员可在没有做出 创造性劳动前提下轻易想到的， 因此也是在本发明的实施例保护范围 内的。 进一步地， 如图 2所示， 扫描驱动单元 110可以包括： 第一扫描 信号线 GO、 第二扫描信号线 GE、 电压线 Vgh、 分别与第一扫描信 号线 GO以及第二扫描信号线 GE对应的两个第三晶体管 112和多个 第四晶体管 113。 第三晶体管 112的栅极连接控制单元 140, 其第一极连接扫描信 号线， 其第二极连接电压线 Vgh。 第四晶体管 113的栅极连接控制单元 140, 其第一极连接一条栅 线 i l l , 其第二极连接一条扫描信号线。 其中，第一扫描信号线 GO用于通过第四晶体管 113逐行向奇数 行的栅线 111提供行扫描信号。 第二扫描信号线 GE用于通过第四晶体管 113逐行向偶数行的栅 线 111提供行扫描信号。 采用这样一种结构的扫描驱动单元电路设计，通过隔行输入行驱 动信号， 可以避免相邻两行输入相同信号而产生行间串扰， 从而可以 使得相邻两行像素单元之间的行间距进一步缩小，大大提高了显示装 置的分辨率与显示质量。 进一步地， 同样参照图 2所示， 数据驱动单元 120可以包括： 多 条数据信号线 DR、 DG、 DB、 一开关信号线 S以及与数据信号线对 应的多个第五晶体管 122。 该第五晶体管 122的栅极连接开关信号线 S , 其第一极连接一条 数据线 121 , 其第二极连接多条数据信号线 DR、 DG、 DB之一。 每一条数据信号线用于输入一种颜色的数据信号。 具体地， 在本发明实施例中， 是以数据信号线包括红色数据信号 线 DR、 绿色数据信号线 DG以及蓝色数据信号线 DB三条数据信号 线为例进行的说明。 其中， 每一条数据信号线均对应一列像素单元， 每三列像素单元分别显示红绿蓝三色， 从而实现彩色显示。 进一步地， 控制单元 140还可以包括： 用于接收定时器 141输出 信号的控制信号线 Xon、 第六晶体管 142以及第七晶体管 143。 第六晶体管 142的栅极连接控制信号线 Xon,其第一极连接电源 线 VDD , 其第二极接地 GND。 第七晶体管 143的栅极连接控制信号线 Xon,其第一极连接数据 信号线， 其第二极接地。 具体的，定时器 141可以采用包括定时器控制寄存器 Tcon( Timer Control Register )在内的所有具有定时触发功能的电子元器件或电路 结构实现。 以全部晶体管均采用 N 型晶体管为例， 当显示装置关机 时，可以由 Tcon同步产生一个高电平脉沖信号输入控制信号线 Xon, 该脉沖信号瞬间打开所有的栅极驱动信号，使得每一个像素单元均处 于开启状态， 同时将数据线信号拉低， 释放掉像素电容中的电荷， 同 时将 OLED供能电源线接地， 使 OLED的驱动晶体管处于关闭状态， OLED随之熄灭， 从而可以消除关机残影现象。 具体地， 当显示装置关机时， 如图 3 所示。 在关机的瞬间， 由
Tcon产生的 Xon信号为高电平， 将所有的栅线同时打开， 每一条栅 线 G_out 此时均为高电平， 数据线的开关也被打开， 数据信号线 D 此时均为低电平， 所有的像素电容通过数据线将残留电荷释放， 与此 同时， VDD信号的开关也被打开， 面板内的残留电荷通过 VDD信号 线瞬间被释放， 从而实现消除残影。 本发明实施例的显示装置，包括有机发光显示器，其他显示器等， 该显示装置包括如上所述的任一阵列基板。 具体地， 本发明实施例的显示装置可以是包括 LED 显示器或 0 LE D显示器在内的具有电流驱动发光器件的显示装置。 本发明实施例的显示装置， 包括阵列基板， 该阵列基板通过在现 有阵列基板设计的基础上增加控制单元，该控制单元分别与扫描驱动 单元以及数据驱动单元电连接， 用于当显示装置断电时， 控制扫描驱 动单元开启每一个像素单元，从而使得像素单元内部存储的电荷可以 通过数据线快速得到释放。 这样一来， 避免了在显示装置关机后的瞬 间，像素内部由于存在电荷而产生的画面残留，有效消除了 AMOLED 显示器的关机残影， 提高了显示装置的显示质量。
图 4示出本发明实施例的阵列基板驱动方法的流程示意图。如图 4所示， 该阵列基板驱动方法包括下列操作过程： 在步骤 S401 中、 当显示装置通电时， 扫描驱动单元向多条栅线 提供行扫描信号，数据驱动单元向被扫描到的多条数据线提供数据信 号，多条栅线和多条数据线横纵交叉形成矩阵形式排列的像素单元阵 歹I 。
在步骤 S402中、 当显示装置断电时， 控制单元控制扫描驱动单 元开启每一个像素单元，该像素单元内部存储的电荷通过数据线快速 释放。 本发明实施例的阵列基板驱动方法，阵列基板通过在现有阵列基 板设计的基础上增加控制单元，该控制单元分别与扫描驱动单元以及 数据驱动单元电连接， 用于当显示装置断电时， 控制扫描驱动单元开 启每一个像素单元，从而使得像素单元内部存储的电荷可以通过数据 线快速得到释放。 这样一来， 避免了在显示装置关机后的瞬间， 像素 内部由于存在电荷而产生的画面残留， 有效消除了 AMOLED显示器 的关机残影， 提高了显示装置的显示质量。
其中， 阵列基板的结构已在前述实施例中做了详细的描述， 此处 不做赞述。
进一步地，阵列基板还可以包括用于向像素单元内部供电的电源 线。 同样参照图 4所示， 方法还包括： 在步骤 S403中、 当显示装置断电时， 控制单元将向像素单元内 部供电的电源线接地。 具体地， 在本发明实施例中， 显示装置可以采用各种 OLED 显 示器， 由于 OLED器件为有源器件， 因此通常需要额外设置一条用于 向有源 OLED器件供能的电源线 VDD, 当显示装置断电时， 该电源 线 VDD通常难以做到及时地关闭， 这样同样会导致像素单元的内部 存在电荷， 从而产生关机残影。 采用这样一种控制单元 140的设计可 以在显示装置断电时迅速将电源线 VDD接地， 从而进一步避免了像 素单元的内部残留电荷， 进一步提高了显示装置的显示质量。 本领域普通技术人员可以理解： 实现上述方法实施例的全部或部分步 骤可以通过程序指令相关的硬件来完成， 前述的程序可以存储于一计算机 可读取存储介质中， 该程序在执行时， 执行包括上述方法实施例的步骤； 而前述的存储介质包括： ROM、 RAM, 磁碟或者光盘等各种可以存储程 序代码的介质。 以上所述， 仅为本发明的具体实施方式， 但本发明的保护范围并 不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范 围内， 可轻易想到的各种变化或替换， 都应涵盖在本发明的保护范围 之内。 因此， 本发明的保护范围应以所述权利要求的保护范围为准。

Claims

权 利 要 求 书
1、 一种阵列基板， 包括： 用于向多条栅线提供行扫描信号的扫描 驱动单元， 以及用于向多条数据线提供数据信号的数据驱动单元， 所 述多条栅线和多条数据线横纵交叉形成矩阵形式排列的像素单元阵 歹 ij , 其中， 该阵列基板还包括：
控制单元， 所述控制单元分别与所述扫描驱动单元以及所述数据 驱动单元电连接， 用于当显示装置断电时， 控制所述扫描驱动单元开 启每一个所述像素单元， 所述像素单元内部存储的电荷通过所述数据 线快速释放。
2、 根据权利要求 1所述的阵列基板， 其中， 所述阵列基板还包括 用于向所述像素单元内部供电的电源线；
所述控制单元还用于当显示装置断电时， 将所述电源线接地。
3、 根据权利要求 2所述的阵列基板， 其中， 所述像素单元包括： 第一晶体管、 第二晶体管、 存储电容以及发光器件；
所述第一晶体管的栅极连接所述栅线， 其第一极连接所述第二晶 体管的栅极， 其第二极连接所述数据线；
所述第二晶体管的第一极连接所述发光器件的正极， 其第二极连 接所述电源线；
所述存储电容的一端连接所述第二晶体管的栅极， 其另一端连接 所述发光器件的负极；
所述发光器件的负极还连接公共电极。
4、 根据权利要求 2所述的阵列基板， 其中， 所述扫描驱动单元包 括： 第一扫描信号线、 第二扫描信号线、 电压线、 分别与所述第一扫 描信号线以及所述第二扫描信号线对应的两个第三晶体管和多个第四 晶体管；
所述第三晶体管的栅极连接所述控制单元， 其第一极连接扫描信 号线， 其第二极连接所述电压线；
所述第四晶体管的栅极连接所述控制单元， 其第一极连接一条所 述栅线， 其第二极连接一条扫描信号线；
所述第一扫描信号线用于通过所述第四晶体管逐行向奇数行的栅 线提供行扫描信号；
所述第二扫描信号线用于通过所述第四晶体管逐行向偶数行的栅 线提供行扫描信号。
5、 根据权利要求 2所述的阵列基板， 其中， 所述数据驱动单元包 括： 多条数据信号线、 一开关信号线以及与所述数据信号线对应的多 个第五晶体管；
所述第五晶体管的栅极连接所述开关信号线， 其第一极连接一条 所述数据线， 其第二极连接一条所述数据信号线；
每一条所述数据信号线用于输入一种颜色的数据信号。
6、 根据权利要求 1-5任一所述的阵列基板， 其中， 所述控制单元 包括： 用于接收定时器输出信号的控制信号线、 第六晶体管以及第七 晶体管；
所述第六晶体管的栅极连接所述控制信号线， 其第一极连接所述 电源线， 其第二极接地；
所述第七晶体管的栅极连接所述控制信号线， 其第一极连接所述 数据信号线， 其第二极接地。
7、 一种显示装置， 包括如权利要求 1-6任一所述阵列基板。
8、 一种阵列基板驱动方法， 包括：
当显示装置通电时， 扫描驱动单元向多条栅线提供行扫描信号， 数据驱动单元向被扫描到的多条数据线提供数据信号， 所述多条栅线 和多条数据线横纵交叉形成矩阵形式排列的像素单元阵列；
当所述显示装置断电时， 控制单元控制所述扫描驱动单元开启每 一个所述像素单元， 所述像素单元内部存储的电荷通过所述数据线快 速释放。
9、 根据权利要求 8所述的方法， 还包括：
当所述显示装置断电时， 控制单元将向所述像素单元内部供电的 电源线接地。
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