WO2014173021A1 - 像素单元控制电路以及显示装置 - Google Patents

像素单元控制电路以及显示装置 Download PDF

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Publication number
WO2014173021A1
WO2014173021A1 PCT/CN2013/079079 CN2013079079W WO2014173021A1 WO 2014173021 A1 WO2014173021 A1 WO 2014173021A1 CN 2013079079 W CN2013079079 W CN 2013079079W WO 2014173021 A1 WO2014173021 A1 WO 2014173021A1
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Prior art keywords
switch tube
input terminal
gate
signal input
control circuit
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PCT/CN2013/079079
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English (en)
French (fr)
Inventor
杨盛际
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北京京东方光电科技有限公司
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Publication of WO2014173021A1 publication Critical patent/WO2014173021A1/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
    • G09G3/22—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
    • G09G2300/08—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
    • G09G2300/0819—Several active elements per pixel in active matrix panels used for counteracting undesired variations, e.g. feedback or autozeroing
    • 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
    • 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
    • G09G2300/0861—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor with additional control of the display period without amending the charge stored in a pixel memory, e.g. by means of additional select 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
    • 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
    • G09G2310/0251—Precharge or discharge of pixel before applying new pixel voltage

Definitions

  • the present invention relates to the field of display technologies, and in particular, to a pixel unit control circuit and a display device provided with the pixel unit control circuit. Background technique
  • AMOLEDs Active Matrix Organic Light Emitting Diodes
  • OLEDs Organic light-emitting diodes
  • the working principle is that electrons and holes combine to generate radiation, that is, directly convert electrical energy into light energy, so a stable current is needed to control the illumination.
  • OLEDs are driven by a drive switch DT, which is typically a P-type switch.
  • the gate of the DT is connected to the data input terminal V data
  • the source is connected to the constant voltage input terminal V dd
  • the drain is connected to the OLED.
  • a voltage difference V GS is generated between the V dd of the source and the V data of the gate, so that the OLED of the DT drain is turned on, and the current of the OLED
  • ⁇ ⁇ is the threshold voltage of DT itself and K is a constant.
  • the embodiment of the invention provides a pixel unit control circuit and a display device provided with the pixel unit control circuit, which solves the problem that the Vth of the driving switch tube in each pixel unit is different in the prior art, and affects the display of the entire image.
  • the technical problem of the effect is not limited.
  • the embodiment of the present invention provides a pixel unit control circuit, including a data input end, a power input end, and a display control unit, and the display control
  • the unit includes a drive switch tube, a reset module, a charging module, and a switch module;
  • the reset module is configured to clear a gate voltage of the driving switch tube;
  • the charging module is configured to charge a voltage of the driving switch tube with a compensation voltage after the gate voltage of the driving switch tube is cleared, where the value of the compensation voltage is equal to the potential of the data input end and the Driving the difference between the threshold voltages of the switch tubes;
  • the switch module is configured to turn on a source of the driving switch tube and the power input end after the gate of the driving switch tube is charged with a compensation voltage, and the drain is electrically connected to the organic light emitting diode.
  • the reset module includes a reset signal input end and a first switch tube;
  • the gate of the driving switch tube is grounded through the first switch tube
  • the reset signal input terminal is coupled to a gate of the first switching transistor.
  • the charging module includes a charging signal input end, a second switching tube, a third switching tube and a first capacitor;
  • Two ends of the second switch tube are respectively connected to the data input end and the source of the drive switch tube;
  • the two ends of the third switch tube are respectively connected to the gate and the drain of the drive switch tube; the first end of the first capacitor is connected to the gate of the drive switch tube, and the second end is grounded;
  • the charging signal input terminal is connected to the gate of the second switching transistor and the gate of the third switching transistor.
  • the switch unit includes a switch signal input end, a fourth switch tube, and a fifth switch tube; the two ends of the fourth switch tube are respectively connected to the power input end and the source of the drive switch tube;
  • the two ends of the fifth switch tube are respectively connected to the drain of the drive switch tube and the organic light emitting diode;
  • the switch signal input terminal is coupled to a gate of the fourth switch transistor and a gate of the fifth switch transistor.
  • the pixel unit control circuit further includes a touch control unit, the touch control unit includes a second capacitor, a coupling signal input end, a reset module, and an acquisition module;
  • the coupling signal input end is connected to the first end of the second capacitor
  • the reset module is configured to input a reset voltage to the second end of the second capacitor
  • the collecting module is configured to collect a touch signal generated by a voltage change of the second capacitor after inputting a reset voltage to the second end of the second capacitor.
  • the reset module includes a reset signal input end and a sixth switch tube;
  • Two ends of the sixth switch tube are respectively connected to the second end of the second capacitor and the data input Into the end;
  • the reset signal input terminal is coupled to a gate of the sixth switch transistor.
  • the acquisition module includes a first direction scan signal input end, a second direction scan signal input end, a seventh switch tube and an eighth switch tube;
  • the seventh switch tube and the eighth switch tube are connected in series between the coupling signal input end and the second direction scan signal input end;
  • a gate of the seventh switch tube is connected to a second end of the second capacitor
  • the gate of the eighth switch tube is connected to the first direction scan signal input end.
  • the driving switch tube is a P-type thin film transistor (Thin Film Transistor).
  • Embodiments of the present invention also provide a display device including the above-described pixel unit control circuit.
  • the above technical solution provided by the embodiment of the present invention has the following advantages: After the reset module clears the gate voltage of the driving switch tube, the charging module charges the gate of the driving switch tube with a compensation voltage.
  • the value of the compensation voltage is equal to v data -v th , and the source of the driving switch tube is electrically connected to the power input end by the switch module, and the drain is electrically connected to the OLED.
  • FIG. 1 is a schematic diagram of a pixel unit control circuit according to Embodiment 1 of the present invention
  • FIG. 2 is another schematic diagram of a pixel unit control circuit according to Embodiment 1 of the present invention
  • FIG. 3 is a first embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a pixel unit control circuit according to Embodiment 2 of the present invention
  • FIG. 5 is another schematic diagram of a pixel unit control circuit according to Embodiment 2 of the present invention; ; as well as
  • Fig. 6 is a timing signal diagram of a pixel unit control circuit according to a second embodiment of the present invention. detailed description
  • the pixel unit control circuit provided by the embodiment of the present invention can be applied to an AMOLED.
  • the pixel unit control circuit includes a data input terminal V data , a power input terminal V dd , and a display control unit.
  • the display control unit includes a driver. Switch tube DT, reset module, charging module and switch module.
  • the reset module is used to clear the gate voltage of the DT.
  • the charging module is used to charge the gate of the DT with a compensation voltage after the gate voltage of the DT is cleared.
  • the value of the compensation voltage is equal to the difference between the potential of the data input terminal V data and the threshold voltage Vth of the DT, that is, V data _Vth.
  • the switch module is configured to turn on the source of the DT and the power input terminal after the gate of the DT is charged with the compensation voltage, and the drain is turned on with the OLED.
  • the charging module charges the gate of the driving switch tube with a compensation voltage, the value of the compensation voltage is equal to v data -v th , and then the switch module drives the switch tube
  • the source is electrically connected to the power input terminal, and the drain is electrically connected to the OLED.
  • FIG. 2 is a circuit diagram of a preferred embodiment of each module in an embodiment of the present invention.
  • the reset module includes a reset signal input terminal and a first switch transistor T1.
  • the gate of DT is grounded through T1; the input of the reset signal is connected to the gate of T1.
  • the charging module includes a charging signal input terminal, a second switching transistor T2, a third switching transistor 3, and a first capacitor C1.
  • the two ends of T2 are respectively connected to the sources of V data and DT; the two ends of T3 are respectively connected to the gate and the drain of DT; the first end of C1 is connected to the gate of DT, and the second end is grounded; charging signal input The terminal is connected to the gate of T2 and the gate of T3.
  • the switch unit includes a switch signal input terminal, a fourth switch transistor T4, and a fifth switch transistor
  • T5. The two ends of ⁇ 4 are connected to the sources of V dd and DT respectively; the two ends of T5 are respectively connected to the drain of DT The pole and OLED; the switch signal input is connected to the gate of T4 and the gate of T5.
  • DT in this embodiment and T1, ⁇ 2, ⁇ 3, ⁇ 4, ⁇ 5 are all
  • ⁇ type TFT The working principle of the ⁇ -type TFT is low-level conduction, which is convenient for control. In the manufacturing process, low temperature poly-silicon (LTPS) can be used to compress the manufacturing process.
  • LTPS low temperature poly-silicon
  • all or part of the above-mentioned switch tubes in the embodiment may be replaced by N-type TFTs, and only the corresponding control signals may be changed.
  • the signal timing diagram of the working process of the pixel unit control circuit is shown in FIG.
  • the reset signal input terminal is low level, so that T1 is turned on, and T2 is
  • the gate of DT can be grounded through T1, so that the voltage of the gate of DT is reduced to ov.
  • the charging signal input terminal is at a low level, so that T2, ⁇ 3 are turned on, and T1, ⁇ 4, ⁇ 5 are turned off.
  • the electrical signal of V data can reach the first end of the CI through T2, DT, T3 in turn, and charge the CI (the gate of the DT). Since the condition of DT turn-on is V GS > V th and the voltage of the DT source is V data , when the gate voltage of DT rises to V data -Vth , the V GS of DT is lowered to V th . When DT is turned off, the charging of the gate of DT is stopped, and the gate voltage of DT will remain at v data -v th .
  • the switching unit is at a low level, so that T4, ⁇ 5 are turned on, and T1, ⁇ 2, ⁇ 3 are turned off.
  • the I OLED is not affected by v th , but only related to v data , thereby solving the problem that since the V th of each DT in the pixel unit is different, the whole is affected.
  • Embodiment 2 The technical problem of the display effect of the image.
  • This embodiment is basically the same as Embodiment 1, and is improved on the basis of Embodiment 1. As shown in FIG. 4, this embodiment further includes a touch control unit.
  • the touch control unit and the aforementioned display control unit can operate simultaneously without mutual interference, and certain components and input signals are common, as described in detail below.
  • the touch control unit includes a second capacitor C2, a coupling signal input terminal, a reset module, and an acquisition module.
  • the coupled signal input is coupled to the first end of C2.
  • the reset module is used for the second end of the C2 (touch sense)
  • the input voltage is input.
  • the acquisition module is configured to acquire a touch signal generated by a voltage change of C2 after inputting a reset voltage at the second end of C2.
  • Figure 5 is a circuit diagram of a preferred embodiment of each module in an embodiment of the present invention.
  • the reset module includes a reset signal input terminal and a sixth switch transistor T6.
  • the two ends of ⁇ 6 are respectively connected to the second end of C2 and V data ; the reset signal input terminal is connected to the gate of T6.
  • the reset signal input end may be the same input end as the reset signal input end.
  • the acquisition module includes a first direction scan signal input end and a second direction scan signal input end, that is, an X direction (lateral) scan signal input end and a Y direction (longitudinal) scan signal input end.
  • the second direction scan signal input end may be used as the X direction scan signal input end
  • the first direction scan signal input end may be used as the Y direction scan signal input end.
  • the X-direction scan signal input end can be the same input end as the charge signal input end.
  • the acquisition module further includes a seventh switch tube T7 and an eighth switch tube T8.
  • ⁇ 7 and ⁇ 8 are connected in series between the coupling signal input terminal and the ⁇ direction scanning signal input terminal; the gate of ⁇ 7 is connected to the second terminal of C2; and the gate of ⁇ 8 is connected to the X-direction scanning signal input terminal.
  • ⁇ 6, ⁇ 7, ⁇ 8 in this embodiment are also ⁇ -type TFTs.
  • all or part of the switch tubes can also be replaced with N-type TFTs.
  • the display control unit and the touch control unit in the pixel unit control circuit provided in this embodiment can work simultaneously and do not interfere with each other, and the signal timing diagram of the working process is as shown in FIG. 6.
  • the reset signal input terminal (reset signal input terminal) is at a low level, so that T6 is turned on, and T7 and ⁇ 8 are turned off.
  • the reset signal is provided by V data to charge the second end of C2 (that is, the touch sensing end), so that the voltage of the touch sensing end is V data .
  • the X-direction scan signal input terminal (charge signal input terminal) is low, so that T8 is turned on, T6 is turned off, and the coupled signal input terminal is at a high level.
  • the coupled signal input terminal supplies a voltage to the first end of C2 to form a coupling capacitor, and on the other hand acts as a source for amplifying T7.
  • the touch of the finger will directly lead to the voltage drop at the second end of C2, that is, the voltage of the T7 gate is lowered, and T7 is turned on, so that the electrical signal on the input signal of the coupling signal will reach the source of T8 through T7 and be passed through T8.
  • the Y-direction scan signal input is acquired to determine the coordinates of the finger touch position in the Y direction. Then, according to the time when the touch signal input end of the Y-direction scan signal is collected, the coordinates of the touch position in the X direction can be determined.
  • the T7 also has an amplification function to amplify the electrical signal at the input end of the coupled signal to facilitate the acquisition of the signal by the Y-direction scan signal.
  • all the devices of the touch control unit are in the off state, and at this time also happens to be the illumination phase of the OLED, so the touch control unit does not affect the illumination of the OLED.
  • the pixel unit control circuit provided by the embodiment of the present invention implements in-cell touch control (in cell touch) while implementing OLED control, and the display control unit and the touch control unit do not affect each other.
  • the embodiment of the pixel unit control circuit in the above embodiment of the present invention is only the most preferred embodiment, and other embodiments may of course be employed.
  • the reset module in the display control unit and the recharge module in the touch control unit can be replaced with other common circuit modules with voltage reset or reset functions.
  • the serial order of T7 and T8 can also be interchanged, and the like.
  • the embodiment of the present invention further provides a display device, which may specifically be any product or component having a display function, such as a television set, a display, a digital photo frame, a mobile phone, a tablet computer, etc., and the display device includes the pixel unit control circuit in the above embodiment. .
  • the display device provided by the embodiment of the present invention has the same technical features as the pixel cell control circuit provided by the embodiment of the present invention, the same technical effect can be produced and the same technical problem can be solved.

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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

一种像素单元控制电路以及显示装置，应用于AMOLED。所述像素单元控制电路包括数据输入端（Vdata）、电源输入端（Vdd）和显示控制单元。显示控制单元包括驱动开关管（DT）、复位模块、充电模块和开关模块。复位模块用于将驱动开关管（DT）的栅极电压清零；充电模块用于为驱动开关管（DT）的栅极充入补偿电压，补偿电压的值等于数据输入端（Vdata）的电势与驱动开关管（DT）的阈值电压之差；开关模块用于使驱动开关管（DT）的源极与电源输入端（Vdd）导通，漏极与有机发光二极管导通。所述像素单元控制电路以及显示装置能解决每个像素单元中驱动开关管（DT）的阈值电压各不相同从而影响显示效果的技术问题。所述像素单元控制电路还可以包括触摸控制单元，触摸控制单元与显示控制单元可以同时工作，互不干扰。

Description

像素单元控制电路以及显示装置 技术领域
本发明涉及显示技术领域， 具体涉及一种像素单元控制电路以及设有该 像素单元控制电路的显示装置。 背景技术
有源矩阵有机发光二极管面板 ( Active Matrix Organic Light Emitting Diode, 筒称 AMOLED )具有能耗低、 生产成本低、 视角宽、 响应速度快等 优点， 因此 AMOLED 已经逐渐取代传统的液晶显示器。 有机发光二极管 ( OLED )属于电流驱动， 其工作原理是电子和空穴结合产生辐射光， 也就是 直接把电能转化为光能， 所以显示时需要稳定的电流来控制发光。
目前 OLED是通过一个驱动开关管 DT进行驱动， DT通常是 P型的开关 管。 DT的栅极连接数据输入端 Vdata, 源极连接恒压的电源输入端 Vdd, 漏极 连接 OLED。 由源极的 Vdd与栅极的 Vdata之间产生电压差 VGS, 从而使得 DT 漏极的 OLED导通， OLED的电流
Figure imgf000003_0001
其中 νώ为 DT本身的 阈值电压， K为一常数。
本发明人在实现本发明的过程中发现， 现有技术至少存在以下问题： 由 于制造工艺的误差、 器件老化等原因， 会使每个像素单元中 DT的 Vth各不 相同， 因此对每个 OLED中的电流造成不同程度偏差， 影响整个图像的显示 效果。 发明内容
本发明实施例提供了一种像素单元控制电路以及设有该像素单元控制电 路的显示装置， 解决了现有技术中每个像素单元中驱动开关管的 Vth各不相 同， 而影响整个图像的显示效果的技术问题。
为了克服现有技术中存在的缺陷， 本发明的实施例采用如下技术方案： 本发明的实施例提供一种像素单元控制电路， 包括数据输入端、 电源输 入端和显示控制单元， 所述显示控制单元包括驱动开关管、 复位模块、 充电 模块和开关模块；
所述复位模块用于将所述驱动开关管的栅极电压清零； 所述充电模块用于在所述驱动开关管的栅极电压清零后， 为所述驱动开 关管的栅极充入补偿电压， 所述补偿电压的值等于所述数据输入端的电势与 所述驱动开关管的阈值电压之差；
所述开关模块用于在所述驱动开关管的栅极充入补偿电压后， 使所述驱 动开关管的源极与所述电源输入端导通， 漏极与有机发光二极管导通。
优选地， 所述复位模块包括复位信号输入端和第一开关管；
所述驱动开关管的栅极通过所述第一开关管接地；
所述复位信号输入端连接至所述第一开关管的栅极。
优选地， 所述充电模块包括充电信号输入端、 第二开关管、 第三开关管 和第一电容；
所述第二开关管的两端分别连接至所述数据输入端和所述驱动开关管的 源极；
所述第三开关管的两端分别连接至所述驱动开关管的栅极和漏极； 所述第一电容的第一端连接至所述驱动开关管的栅极， 第二端接地； 所述充电信号输入端连接至所述第二开关管的栅极和所述第三开关管的 栅极。
优选地，所述开关单元包括开关信号输入端、第四开关管和第五开关管； 所述第四开关管的两端分别连接至所述电源输入端和所述驱动开关管的 源极；
所述第五开关管的两端分别连接至所述驱动开关管的漏极和所述有机发 光二极管；
所述开关信号输入端连接至所述第四开关管的栅极和所述第五开关管的 栅极。
进一步， 该像素单元控制电路， 还包括触摸控制单元， 所述触摸控制单 元包括第二电容、 耦合信号输入端、 重置模块和采集模块；
所述耦合信号输入端连接至所述第二电容的第一端；
所述重置模块用于为所述第二电容的第二端输入重置电压；
所述采集模块用于在所述第二电容的第二端输入重置电压后， 采集由所 述第二电容的电压变化而产生的触摸信号。
优选地， 所述重置模块包括重置信号输入端和第六开关管；
所述第六开关管的两端分别连接至所述第二电容的第二端和所述数据输 入端；
所述重置信号输入端连接至所述第六开关管的栅极。
优选地， 所述采集模块包括第一方向扫描信号输入端、 第二方向扫描信 号输入端、 第七开关管和第八开关管；
所述第七开关管和所述第八开关管串联在所述耦合信号输入端与所述第 二方向扫描信号输入端之间；
所述第七开关管的栅极连接至所述第二电容的第二端；
所述第八开关管的栅极连接至所述第一方向扫描信号输入端。
优选地， 所述驱动开关管为 P型薄膜晶体管（Thin Film Transistor, 筒称 TFT )。
本发明的实施例还提供一种显示装置， 包括上述的像素单元控制电路。 与现有技术相比，本发明的实施例所提供的上述技术方案具有如下优点： 复位模块将驱动开关管的栅极电压清零后， 由充电模块为驱动开关管的栅极 充入补偿电压， 该补偿电压的值等于 vdata-vth, 再由开关模块将驱动开关管 的源极与电源输入端导通， 漏极与 OLED导通。 此时， 驱动开关管的源极与 栅极之间的电压差 VGS为 Vdd_(Vdata_Vth)=Vdd_Vdata+Vth, 所以 OLED内部产生 的电流 IOLED=K(VGS- Vth)2= K(Vdd- Vdata+Vth - Vth)2= K(Vdd- Vdata)2。 因此， 本发 明的实施例提供的技术方案使得 IOLED不受 Vth的影响， 而只与 Vdata有关， 从 而解决了因为每个像素单元中驱动开关管的 Vth各不相同，而影响整个图像的 显示效果的技术问题。 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筒单地介绍。
图 1为本发明的实施例 1所提供的像素单元控制电路的示意图； 图 2为本发明的实施例 1所提供的像素单元控制电路的另一示意图； 图 3为本发明的实施例 1所提供的像素单元控制电路的信号时序图； 图 4为本发明的实施例 2所提供的像素单元控制电路的示意图； 图 5为本发明的实施例 2所提供的像素单元控制电路的另一示意图； 以 及
图 6为本发明的实施例 2所提供的像素单元控制电路的时序信号图。 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。 实施例 1:
如图 1 所示， 本发明实施例所提供的像素单元控制电路可应用于 AMOLED中， 该像素单元控制电路包括数据输入端 Vdata、 电源输入端 Vdd和 显示控制单元， 显示控制单元包括驱动开关管 DT、 复位模块、 充电模块和开 关模块。
复位模块用于将 DT的栅极电压清零。充电模块用于在 DT的栅极电压清 零后， 为 DT的栅极充入补偿电压， 补偿电压的值等于数据输入端 Vdata的电 势与 DT的阈值电压 Vth之差， 即 Vdata_Vth。 开关模块用于在 DT的栅极充入 补偿电压后， 使 DT的源极与电源输入端导通， 同时漏极与 OLED导通。
复位模块将驱动开关管的栅极电压清零后， 由充电模块为驱动开关管的 栅极充入补偿电压， 该补偿电压的值等于 vdata-vth,再由开关模块将驱动开关 管的源极与电源输入端导通， 漏极与 OLED导通。 此时， 驱动开关管的源极 与栅极之间的电压差 VGS为 Vdd-(Vdata-Vth)=Vdd-Vdata+Vth, 所以 OLED内部产 生的电流 IOLED=K(VGS-Vth)2= K(Vdd-Vdata+Vth -νώ)2= K(Vdd-Vdata)2。 因此， 本发 明的实施例提供的技术方案使得 不受 Vth的影响， 而只与 Vdata有关， 从 而解决了因为每个像素单元中驱动开关管的 νώ各不相同，而影响整个图像的 显示效果的技术问题。
图 2为本发明实施例中各个模块的优选的实施方式的电路图。
如图 2所示， 复位模块包括复位信号输入端和第一开关管 Tl。 DT的栅 极通过 T1接地； 复位信号输入端连接至 T1的栅极。
充电模块包括充电信号输入端、 第二开关管 T2、 第三开关管 Τ3和第一 电容 Cl。 T2的两端分别连接至 Vdata和 DT的源极； T3的两端分别连接至 DT 的栅极和漏极； C1的第一端连接至 DT的栅极， 第二端接地； 充电信号输入 端连接至 T2的栅极和 T3的栅极。
优选地， 开关单元包括开关信号输入端、 第四开关管 T4 和第五开关管
T5。 Τ4的两端分别连接至 Vdd和 DT的源极； T5的两端分别连接至 DT的漏 极和 OLED; 开关信号输入端连接至 T4的栅极和 T5的栅极。
作为一个优选方案， 本实施例中的 DT, 以及 Tl、 Τ2、 Τ3、 Τ4、 Τ5均为
Ρ型 TFT。 Ρ型 TFT的工作原理是低电平导通， 方便控制； 在制造过程中可 以采用低温多晶硅技术（ Low Temperature Poly-silicon , 筒称 LTPS ), 从而筒 化其制作工艺。 当然， 本实施例中上述的全部或部分开关管也可以替换为 N 型 TFT, 只需改变一下相应的控制信号即可。
该像素单元控制电路的工作过程的信号时序图如图 3所示。
在第一时间段 tl内， 复位信号输入端为低电平， 使得 T1导通， 而 T2、
Τ3、 Τ4、 Τ5断开。 此时， DT的栅极就可以通过 Tl接地， 从而使 DT的栅极 的电压降为 ov。
在第二时间段 t2内， 充电信号输入端为低电平， 使得 T2、 Τ3导通， 而 Tl、 Τ4、 Τ5断开。 Vdata的电信号可以依次通过 T2、 DT、 T3到达 CI的第一 端， 并为 CI ( DT的栅极）充电。 因为 DT导通的条件是 VGS > Vth, 而 DT 源极的电压为 Vdata, 所以当 DT的栅极电压上升至 Vdata-Vth时， DT的 VGS就 会降低至 Vth, 此时 DT就会关断， 停止对 DT的栅极充电， 并且 DT的栅极 电压将会保持在 vdata-vth。
在第三时间段 t3内， 开关单元为低电平， 使得 T4、 Τ5导通， 而 Tl、 Τ2、 Τ3断开。 此时， DT源极与 Vdd导通， 漏极与 OLED导通， 则 DT的源极与 栅极之间的电压差 VGS=Vdd- (Vdata-VtJ^Vdd-Vdata+Vth,所以 OLED内部产生的 电流100¾= ¥(¾_¥111)2= ¾¥(1(1_¥(^+¥111 -¥&)2= ¥(1(1_¥(^)2。 因此， 本发明 实施例提供的像素单元控制电路中， IOLED不受 vth的影响， 而只与 vdata有关， 从而解决了因为每个像素单元中 DT的 Vth各不相同，而影响整个图像的显示 效果的技术问题。 实施例 2:
本实施例与实施例 1基本相同， 并且在实施例 1的基础上进行改进， 如 图 4所示， 本实施例中还包括触摸控制单元。 触摸控制单元与前述的显示控 制单元可以同时进行工作， 互不干扰， 并且某些元件和输入信号是公用的， 以下进行详细说明。
触摸控制单元包括第二电容 C2、耦合信号输入端、重置模块和采集模块。 耦合信号输入端连接至 C2的第一端。 重置模块用于为 C2的第二端（触控感 应端）输入重置电压。 采集模块用于在 C2的第二端输入重置电压后， 采集由 C2的电压变化而产生的触摸信号。
图 5为本发明实施例中各个模块的优选的实施方式的电路图。
如图 5所示， 重置模块包括重置信号输入端和第六开关管 T6。 Τ6的两 端分别连接至 C2的第二端和 Vdata； 重置信号输入端连接至 T6的栅极。 本发 明实施例中， 重置信号输入端可以与复位信号输入端为同一个输入端。
采集模块包括第一方向扫描信号输入端和第二方向扫描信号输入端， 也 就是 X方向 （横向 )扫描信号输入端和 Y方向 （纵向 )扫描信号输入端。 当 然， 在其他实施方式中， 也可以将第二方向扫描信号输入端作为 X方向扫描 信号输入端， 将第一方向扫描信号输入端作为 Y方向扫描信号输入端。 本发 明实施例中， X方向扫描信号输入端可以与充电信号输入端为同一个输入端。
采集模块还包括第七开关管 T7和第八开关管 T8。 Τ7和 Τ8串联在耦合 信号输入端与 Υ方向扫描信号输入端之间； Τ7的栅极连接至 C2的第二端； Τ8的栅极连接至 X方向扫描信号输入端。
优选地， 本实施例中的 Τ6、 Τ7、 Τ8也为 Ρ型 TFT。 当然， 其中的全部 或部分开关管也可以替换为 N型 TFT。
本实施例提供的像素单元控制电路中的显示控制单元与触摸控制单元可 以同时进行工作， 并且互不干扰， 其工作过程的信号时序图如图 6所示。
在第一时间段 tl内， 重置信号输入端（复位信号输入端） 为低电平， 使 得 T6导通， 而 T7、 Τ8断开。 此时， 由 Vdata提供重置信号， 为 C2的第二端 (也就是触控感应端）充电， 使触控感应端的电压为 Vdata。
在第二时间段 t2内， X方向扫描信号输入端 （充电信号输入端） 为低电 平， 使得 T8导通， T6断开， 同时耦合信号输入端为高电平。 此时， 耦合信 号输入端一方面为 C2的第一端提供电压，形成耦合电容； 另一方面还充当放 大 T7的源极。
手指的触摸会直接导致 C2的第二端的电压降低，即 T7栅极的电压降低， 使 T7导通， 这样耦合信号输入端上的电信号就会通过 T7到达 T8的源极， 并通过 T8被 Y方向扫描信号输入端采集， 以确定手指触摸位置在 Y方向上 的坐标。 然后， 根据 Y方向扫描信号输入端采集到该触控信号的时间， 就可 以确定该触摸位置在 X方向上的坐标。 此外， T7还具有放大作用， 将耦合信 号输入端上的电信号放大， 以便于 Y方向扫描信号对该信号的采集。 在第三时间段 t3内， 触摸控制单元的所有器件均处于关闭状态， 而此时 也恰好是 OLED的发光阶段， 所以触摸控制单元不会对 OLED的发光造成影 响。
因此， 本发明实施例提供的像素单元控制电路， 在实现了 OLED控制的 同时， 还实现了内嵌式触摸控制（in cell touch ), 并且显示控制单元与触摸控 制单元不会相互影响。
应当说明的是， 本发明上述实施例中的像素单元控制电路的实施方式仅 是最优选的实施方式， 当然还可以采用其他的实施方式。 例如， 显示控制单 元中的复位模块， 以及触摸控制单元中的充值模块， 均可以替换为其他常见 的具有电压复位或重置功能的电路模块。 又如， 实施例 2的采样模块中， T7 与 T8的串联顺序也可以互换， 等等。 实施例 3:
本发明的实施例还提供一种显示装置， 具体可以是电视机、 显示器、 数 码相框、 手机、 平板电脑等任何具有显示功能的产品或部件， 该显示装置包 括上述实施例中的像素单元控制电路。
由于本发明实施例提供的显示装置与上述本发明实施例所提供的像素单 元控制电路具有相同的技术特征， 所以也能产生相同的技术效果， 解决相同 的技术问题。
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 护范围应以权利要求的保护范围为准。

Claims

权 利 要 求 书
1、 一种像素单元控制电路， 包括数据输入端、 电源输入端和显示控制单 元， 所述显示控制单元包括驱动开关管、 复位模块、 充电模块和开关模块； 所述复位模块用于将所述驱动开关管的栅极电压清零；
所述充电模块用于在所述驱动开关管的栅极电压清零后， 为所述驱动开 关管的栅极充入补偿电压， 所述补偿电压的值等于所述数据输入端的电势与 所述驱动开关管的阈值电压之差； 以及
所述开关模块用于在所述驱动开关管的栅极充入补偿电压后， 使所述驱 动开关管的源极与所述电源输入端导通， 漏极与有机发光二极管导通。
2、根据权利要求 1所述的像素单元控制电路， 其特征在于： 所述复位模 块包括复位信号输入端和第一开关管；
所述驱动开关管的栅极通过所述第一开关管接地；
所述复位信号输入端连接至所述第一开关管的栅极。
3、根据权利要求 1所述的像素单元控制电路， 其特征在于： 所述充电模 块包括充电信号输入端、 第二开关管、 第三开关管和第一电容；
所述第二开关管的两端分别连接至所述数据输入端和所述驱动开关管的 源极；
所述第三开关管的两端分别连接至所述驱动开关管的栅极和漏极； 所述第一电容的第一端连接至所述驱动开关管的栅极， 第二端接地； 以 及
所述充电信号输入端连接至所述第二开关管的栅极和所述第三开关管的 栅极。
4、根据权利要求 1所述的像素单元控制电路， 其特征在于： 所述开关单 元包括开关信号输入端、 第四开关管和第五开关管；
所述第四开关管的两端分别连接至所述电源输入端和所述驱动开关管的 源极；
所述第五开关管的两端分别连接至所述驱动开关管的漏极和所述有机发 光二极管； 以及
所述开关信号输入端连接至所述第四开关管的栅极和所述第五开关管的 栅极。
5、根据权利要求 1所述的像素单元控制电路， 其特征在于： 还包括触摸 控制单元， 所述触摸控制单元包括第二电容、 耦合信号输入端、 重置模块和 采集模块；
所述耦合信号输入端连接至所述第二电容的第一端；
所述重置模块用于为所述第二电容的第二端输入重置电压； 以及 所述采集模块用于在所述第二电容的第二端输入重置电压后， 采集由所 述第二电容的电压变化而产生的触摸信号。
6、根据权利要求 5所述的像素单元控制电路， 其特征在于： 所述重置模 块包括重置信号输入端和第六开关管；
所述第六开关管的两端分别连接至所述第二电容的第二端和所述数据输 入端； 以及
所述重置信号输入端连接至所述第六开关管的栅极。
7、根据权利要求 5所述的像素单元控制电路， 其特征在于： 所述采集模 块包括第一方向扫描信号输入端、 第二方向扫描信号输入端、 第七开关管和 第八开关管；
所述第七开关管和所述第八开关管串联在所述耦合信号输入端与所述第 二方向扫描信号输入端之间；
所述第七开关管的栅极连接至所述第二电容的第二端； 以及
所述第八开关管的栅极连接至所述第一方向扫描信号输入端。
8、根据权利要求 1所述的像素单元控制电路， 其特征在于： 所述驱动开 关管为 P型薄膜晶体管。
9、一种显示装置，包括权利要求 1至 8任一项所述的像素单元控制电路。
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Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103456267B (zh) * 2013-08-26 2015-12-02 北京京东方光电科技有限公司 触控显示驱动电路及其驱动方法和显示装置
CN103971639B (zh) 2014-05-06 2016-01-06 京东方科技集团股份有限公司 像素驱动电路及其驱动方法、阵列基板及显示装置
CN103985352B (zh) 2014-05-08 2017-03-08 京东方科技集团股份有限公司 补偿像素电路及显示装置
CN104103239B (zh) 2014-06-23 2016-05-04 京东方科技集团股份有限公司 有机发光二极管像素电路及其驱动方法
CN104078006B (zh) * 2014-06-27 2016-04-13 京东方科技集团股份有限公司 像素电路、显示面板和显示装置
CN104091564B (zh) * 2014-06-30 2016-07-06 京东方科技集团股份有限公司 一种像素电路、有机电致发光显示面板及显示装置
CN104217677B (zh) * 2014-07-30 2016-08-24 京东方科技集团股份有限公司 触控显示电路及显示装置
CN104282265B (zh) 2014-09-26 2017-02-01 京东方科技集团股份有限公司 像素电路及其驱动方法、有机发光显示面板及显示装置
CN104409047B (zh) * 2014-12-18 2017-01-18 合肥鑫晟光电科技有限公司 像素驱动电路、像素驱动方法和显示装置
CN104680976B (zh) * 2015-02-09 2017-02-22 京东方科技集团股份有限公司 像素补偿电路、显示装置及驱动方法
CN104680981B (zh) * 2015-03-26 2017-03-15 京东方科技集团股份有限公司 Oled像素驱动电路及驱动方法、oled显示装置
CN104835449B (zh) * 2015-05-04 2017-05-17 京东方科技集团股份有限公司 像素电路及其驱动方法、阵列基板以及显示装置
CN104850270B (zh) 2015-06-11 2017-10-03 京东方科技集团股份有限公司 触控模组的驱动方法、驱动电路、触控模组、面板和装置
CN104978931B (zh) 2015-07-09 2017-11-21 上海天马有机发光显示技术有限公司 加载数据电压信号的装置及方法、显示面板、显示器
CN106340514B (zh) * 2016-11-01 2017-10-10 京东方科技集团股份有限公司 一种有源像素传感器、驱动电路及驱动方法
KR102387793B1 (ko) * 2017-09-13 2022-04-15 엘지디스플레이 주식회사 터치 센서 일체형 표시장치와 그 구동 방법
CN109036287B (zh) * 2018-07-19 2020-05-05 武汉华星光电半导体显示技术有限公司 一种像素驱动电路、驱动方法及显示面板
TWI708230B (zh) * 2018-11-20 2020-10-21 友達光電股份有限公司 顯示面板

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103000134A (zh) * 2012-12-21 2013-03-27 北京京东方光电科技有限公司 像素电路及其驱动方法、显示装置
CN103034365A (zh) * 2012-12-13 2013-04-10 北京京东方光电科技有限公司 触控显示电路结构及其驱动方法、阵列基板和显示装置
CN202976780U (zh) * 2012-12-21 2013-06-05 北京京东方光电科技有限公司 像素电路及显示装置
CN103135846A (zh) * 2012-12-18 2013-06-05 北京京东方光电科技有限公司 触控显示电路结构及其驱动方法、阵列基板和显示装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100975873B1 (ko) * 2008-12-10 2010-08-13 삼성모바일디스플레이주식회사 터치 스크린 디스플레이 장치 및 이의 구동 방법
CN101944323B (zh) * 2009-07-06 2013-09-18 上海天马微电子有限公司 有机发光显示装置及其像素单元、触摸检测方法
KR101144725B1 (ko) * 2009-11-30 2012-05-24 이성호 터치패널의 터치셀 구조
KR20120065137A (ko) * 2010-12-10 2012-06-20 삼성모바일디스플레이주식회사 화소, 이를 이용한 표시 장치, 및 그의 구동 방법
CN203179480U (zh) * 2013-04-26 2013-09-04 北京京东方光电科技有限公司 像素单元控制电路以及显示装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103034365A (zh) * 2012-12-13 2013-04-10 北京京东方光电科技有限公司 触控显示电路结构及其驱动方法、阵列基板和显示装置
CN103135846A (zh) * 2012-12-18 2013-06-05 北京京东方光电科技有限公司 触控显示电路结构及其驱动方法、阵列基板和显示装置
CN103000134A (zh) * 2012-12-21 2013-03-27 北京京东方光电科技有限公司 像素电路及其驱动方法、显示装置
CN202976780U (zh) * 2012-12-21 2013-06-05 北京京东方光电科技有限公司 像素电路及显示装置

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