WO2023020348A1 - 一种驱动补偿电路、显示装置以及显示单元的驱动方法 - Google Patents

一种驱动补偿电路、显示装置以及显示单元的驱动方法 Download PDF

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Publication number
WO2023020348A1
WO2023020348A1 PCT/CN2022/111404 CN2022111404W WO2023020348A1 WO 2023020348 A1 WO2023020348 A1 WO 2023020348A1 CN 2022111404 W CN2022111404 W CN 2022111404W WO 2023020348 A1 WO2023020348 A1 WO 2023020348A1
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Prior art keywords
control
display unit
data line
terminal
signal
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PCT/CN2022/111404
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English (en)
French (fr)
Inventor
齐二龙
王祖亮
童华南
贾丽
向毅
Original Assignee
重庆康佳光电技术研究院有限公司
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Publication of WO2023020348A1 publication Critical patent/WO2023020348A1/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]
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen

Definitions

  • the present application relates to the field of semiconductor devices, and in particular to a driving compensation circuit, a display device and a driving method for a display unit.
  • Mini-LED display technology has the advantages of high brightness, high response speed, low power consumption, long life, etc., and can be applied to super large-screen high-definition display, such as monitoring command, high-definition studio, high-end theater , medical testing and other professional fields, or commercial fields such as outdoor advertising, conferences and exhibitions, and office displays, have become research hotspots for people pursuing a new generation of display technology.
  • LED display puts forward higher requirements for row drive, from pure P-MOSFET (Positive Channel Metal Oxide Semiconductor Field-Effect Transistor, P-type Metal-Oxide Semiconductor Field-Effect Transistor) to achieve row switching, to a more integrated and more functional multi-functional row driver, now, due to the influence of capacitance in the display panel, row The driver is prone to the problem of uneven brightness transition of the display unit and poor display uniformity (bright ones are very bright, dark ones are very dark).
  • the purpose of this application is to provide a driving compensation circuit, a display device and a driving method for a display unit, aiming at solving the problems of uneven brightness transition and poor display uniformity of the existing row driving. .
  • a drive compensation circuit comprising:
  • a signal control unit connected to the control end of the control switch
  • the second end of the control switch is connected to the output end of the driving data line of the display unit, and the output end of the driving data line is configured to output a driving voltage to drive the display unit to emit light;
  • the signal control unit is configured to output a first control signal to the control terminal when the luminous brightness of the display unit exceeds the threshold, and the control terminal conducts the first terminal and the second terminal when receiving the first control signal;
  • the signal input unit is It is configured to change the driving voltage when the first end and the second end are turned on, so as to control the display unit not to emit light within the time of the first control signal;
  • the signal control unit is also configured to not exceed the When the threshold is reached, a second control signal is output to the control terminal, and when the control terminal receives the second control signal, the first terminal and the second terminal are turned off.
  • the present application also provides a display device, the display device includes a plurality of driving data lines, each driving data line includes: a row pipe data line and a column pipe data line; a row pipe data line and a column pipe data line A display unit is arranged therebetween, and the output end of at least one of the data lines driven is provided with the above-mentioned driving compensation circuit.
  • the present application also provides a driving method of a display unit, which is applied to the above driving compensation circuit.
  • the driving method of the display unit includes: when the luminous brightness of the display unit exceeds the threshold through the signal control unit, output the first The control signal is sent to the control terminal of the control switch; when the control terminal receives the first control signal, it turns on the first terminal and the second terminal of the control switch; The driving voltage of the unit is changed to control the display unit not to emit light.
  • the above drive compensation circuit includes a signal control unit, a signal input unit, and a control switch.
  • the signal control unit sends a first control signal to turn on the control switch, so that the signal input unit changes the driving value of the display unit.
  • Drive voltage and then make the display unit not emit light within the time of the first control signal, reduce the brightness of the display unit, avoid the problem that the brightness of the display unit is brighter, and improve the overall brightness of the display unit when there are multiple display units show uniformity.
  • the above display device by driving the signal control unit, the signal input unit, and the control switch in the compensation circuit, when the luminous brightness of the display unit exceeds the threshold value, the signal control unit sends a first control signal to turn on the control switch, so that the signal input unit changes Driving the driving voltage of the display unit, so that the display unit does not emit light within the time of the first control signal, reduces the brightness of the display unit, avoids the problem that the brightness of the display unit is brighter, and improves the display unit when there are multiple display units. Display uniformity across the entire display unit.
  • the first control signal is sent to change the driving voltage for driving the display unit, so that the display unit does not emit light within the time of the first control signal, reducing the The brightness of the display unit avoids the problem that the brightness of the display unit is too bright, and when there are multiple display units, the overall display uniformity of the display unit is improved.
  • FIG. 1 is a waveform diagram of switching control signals of the row pipe data line Row and the row pipe data line Out provided by the embodiment of the present application;
  • FIG. 2 is a basic schematic diagram of a display unit emitting light according to a control signal provided by an embodiment of the present application;
  • FIG. 3 is a basic schematic diagram of a display unit affected by capacitance according to an embodiment of the present application
  • FIG. 4 is a schematic diagram of the basic structure of the drive compensation circuit provided by the embodiment of the present application.
  • FIG. 5 is a schematic diagram of the basic structure of the connection between the drive compensation circuit and the output end of the line pipe data line provided by the embodiment of the present application;
  • FIG. 6 is a schematic diagram of the basic structure of the drive compensation circuit connected to the output end of the tube data line provided by the embodiment of the present application;
  • FIG. 7 is a schematic diagram of the basic structure of the signal control unit provided by the embodiment of the present application.
  • FIG. 8 is a basic schematic diagram of the signal control unit sending a first control signal to change the driving voltage provided by the embodiment of the present application;
  • FIG. 9 is a basic schematic diagram of the signal control unit sending two first control signals to change the driving voltage provided by the embodiment of the present application.
  • FIG. 10 is a schematic diagram of the basic structure of the signal input unit provided by the embodiment of the present application.
  • FIG 11 is a schematic diagram of the basic structure of the control switch provided by the embodiment of the present application.
  • FIG. 12 is a schematic flowchart of a driving method of a display unit provided in another optional embodiment of the present application.
  • 1-drive compensation circuit 11-signal control unit, 12-signal input unit, 13-control switch, 2-display unit, 111-sequence controller, 121-reference voltage module, 122-discharge speed control module, Row-line Tube data line, Out-tube data line, C-parasitic capacitance, Driver IC-driver chip.
  • LED display screens have put forward higher requirements for row drivers. From simple P-MOSFET row switching to multifunctional row drivers with higher integration and stronger functions, only The display unit (the display unit is an LED for illustration) common anode (that is, the anode of the display unit is on the row pipe data line Row) is introduced as the background, as shown in Figure 1.
  • Figure 1 shows the row pipe data line Row, column The waveform diagram of the switch control signal of the tube data line Out, when the control signal of the row tube data line Row (n+1) is low, the driving voltage on the row tube data line (ie, the anode voltage of the display unit) will be pulled up , driver chip Driver When the control signal of the row tube data line Out on the IC is low, the driving voltage on the row tube data line (that is, the voltage on the cathode of the display unit) is pulled down. At this time, the row tube data line and the column tube data line The display units between them will be driven to emit light; when the width of the control signal of the tube data line Out is different, different brightness will be obtained, as shown in FIG. 2 .
  • the parasitic capacitance C of the display unit between the row pipe data lines and between the row pipe data lines and the ground point GND, between the column pipe data lines and between the pipe data lines and the ground point
  • the parasitic capacitance C of GND will affect the brightness transition (that is, display continuous multiple gray scales at the same time, such as 0 ⁇ 255 gray scales), resulting in poor display uniformity (bright ones are very bright, dark ones are very dark).
  • the drive compensation circuit 1 includes: a signal control unit 11, a signal input unit 12, and a control switch 13; , the signal input unit 12 is connected to the first end of the control switch 13, the second end of the control switch 13 is connected to the output end of the driving data line of the display unit 2, and the output end of the driving data line is used to output the driving voltage to drive the display unit 2.
  • the signal control unit 11 outputs the first control signal to the control terminal when the luminous brightness of the display unit 2 exceeds the threshold, and the control terminal conducts the first terminal and the second terminal when receiving the first control signal; signal input When the first end and the second end of the unit 12 are turned on, the driving voltage is changed to control the display unit 2 not to emit light; the signal control unit 11 outputs the second control signal to the The control terminal, when the control terminal receives the second control signal, cuts off the first terminal and the second terminal.
  • the drive compensation circuit includes a signal control unit, a signal input unit, and a control switch.
  • the signal control unit sends a first control signal to turn on the control switch, so that the signal input unit changes Driving the driving voltage of the display unit, so that the display unit does not emit light within the time of the first control signal, reduces the brightness of the display unit, avoids the problem that the brightness of the display unit is brighter, and improves the display unit when there are multiple display units. Display uniformity across the entire display unit.
  • the luminous brightness can be monitored by a sensor to identify whether the luminous brightness of the display unit 2 exceeds the threshold;
  • a sensor to identify whether the luminous brightness of the display unit 2 exceeds the threshold;
  • debugging externally perform a debugging on whether the luminous brightness of the display unit 2 exceeds the threshold to identify whether the luminous luminance of the display unit 2 exceeds the threshold.
  • This embodiment does not limit the method for identifying whether the luminous brightness of the display unit 2 exceeds the threshold, wherein the display unit 2 Including but not limited to: LED chip display unit, organic light emitting diode (Organic Light-Emitting Diode, OLED) chip display unit, Micro Light Emitting Diode (Micro Light Emitting Diode, Micro LED) chip display unit, mini light-emitting diode (Mini Light Emitting Diode, MiniLED) chip display unit at least one.
  • OLED Organic Light-Emitting Diode
  • Micro Light Emitting Diode Micro Light Emitting Diode, Micro LED
  • mini light-emitting diode Mini Light Emitting Diode, MiniLED chip display unit at least one.
  • the display unit 2 is disposed between the row data line Row and the column data line Out, that is, one end of the display unit 2 is connected to the row data line Row, and the other end is connected to the column data line Out.
  • the connection between the row pipe data line Row and the column pipe when the anode of the display unit 2 is connected to the row pipe data line Row, when the driving voltage output by the row pipe data line Row is high, and when the driving voltage output by the column pipe data line is low, the connection between the row pipe data line Row and the column pipe
  • the display unit 2 between the data lines Out emits light, that is, both the row pipe data line Row and the column pipe data line Out can control the corresponding display unit 2 to not emit light;
  • the driving data lines include: the row pipe data line Row and the column pipe data
  • the line Out which is connected to the drive compensation circuit 1, may be any one of them.
  • the drive compensation circuit 1 may be connected to the output end of the row pipe data line Row, or may be connected to the output end of the row pipe data line Out.
  • the second end of the control switch 13 is connected to the output end of the display unit 2.
  • the connection of the output end of the driving data line includes: the second end is connected to the output end of the row pipe data line Row, as shown in Figure 5, or, the second end is connected to the output end of the row pipe data line Out, as shown in Figure 6
  • the drive compensation circuit 1 may be provided at both the output end of the row pipe data line Out and the output end of the row pipe data line Row.
  • the second end is connected to the output end of the row pipe data line Row
  • the driving compensation circuit 1 can pull down the driving voltage output by the row pipe data line Row, so that the driving voltage output by the row pipe data line Row When the voltage is low, the driving voltage output by the tube data line is low, so that the display unit 2 does not emit light;
  • the driving voltage output by the data line Out is pulled high, so that the driving voltage output by the row pipe data line Row is high, and the driving voltage output by the column pipe data line is high, so that the display unit 2 does not emit light within the first control signal time.
  • the above-mentioned driving compensation circuit 1 can be arranged in whole or in part inside the driving data line; the driving compensation circuit 1 can also be completely placed outside the driving data line; for example, the display driving compensation circuit 1 can be All or part of it is set inside the row management data line Row.
  • the signal control unit 11 includes but is not limited to: a timing controller 111; In the period range in which the voltage of Out is low, at least one first control signal is output.
  • the drive compensation circuit 1 is connected to the output terminal of the row pipe data line Row, outputs a first control signal, pulls down the driving voltage output by the row pipe data line Row at time t, and turns the row pipe data line Row
  • the waveform of the driving voltage pulled down is the waveform of the driving voltage of the row tube data line Row'.
  • FIG. 8 the drive compensation circuit 1 is connected to the output terminal of the row pipe data line Row, outputs a first control signal, pulls down the driving voltage output by the row pipe data line Row at time t, and turns the row pipe data line Row
  • the waveform of the driving voltage pulled down is the waveform of the driving voltage of the row tube data line Row'.
  • the number, width, and output position of the first control signal can be changed according to actual usage conditions, but it must be ensured that it must be within the time when the tube data line Outm is pulled low (that is, the drive of the tube data line Outm voltage is low), otherwise the effect of reducing the luminance of the display unit 2 cannot be achieved.
  • the timing controller 111 is further configured to output a second control signal when the luminance of the display unit 2 does not exceed the threshold, and the first control signal and the second control signal are opposite signals.
  • the first control signal can be one of a high-level signal and a low-level signal, and when the first control signal is a high-level signal, the second control signal is a low-level signal, which should It is to be understood that, wherein the first control signal can make the control switch 13 be in the conduction state, and the second control signal can make the control switch 13 be in the cut-off state, for example, when the control switch 13 is an N-type field effect transistor, the first control signal is a high-level signal, and the second control signal is a low-level signal.
  • the signal input unit 12 includes: a reference voltage module 121, and the reference voltage module 121 is used to output a reference voltage; when the second terminal is connected to the output terminal of the row pipe data line Row, the reference voltage is lower than Driving voltage; when the second end is connected to the output end of the tube data line Out, the reference voltage is higher than the driving voltage.
  • the reference voltage output by the reference voltage module 121 can be the ground voltage, as shown in FIG. 10 , or provided by the constant voltage voltage unit
  • a constant voltage lower than the driving voltage output by the row pipe data line Row can further achieve the effect of pulling down the driving voltage output by the row pipe data line Row, so that the display unit 2 does not emit light.
  • the reference voltage module 121 may be a constant voltage higher than the driving voltage output by the tube data line Out provided by the constant voltage unit. , so as to achieve the effect of increasing the driving voltage output by the column tube data line Out, so that the display unit 2 does not emit light.
  • the signal input unit 12 further includes: a discharge speed control module 122, the reference voltage module 121 is connected to the output end of the driving data line through the discharge speed control module 122; wherein the discharge speed control module 122 includes but does not Limited to: resistors, as shown in Figure 10; where the resistors can be fixed resistors or variable resistors.
  • the discharge speed control module 122 is a resistor, the larger the resistance value of the resistor, the slower the change of the driving voltage;
  • the first end and the second end of the unit 12 are turned on, the slower the speed of pulling down the driving voltage is, the smaller the resistance is, the faster the speed of pulling down the driving voltage is.
  • the discharge speed control module 122 may not be arranged in the signal input unit 12, and the same effect can also be achieved by being arranged between the signal input unit 12 and the output end of the driving data line.
  • the control switch 13 includes but is not limited to: a field effect transistor; wherein, when the drive compensation circuit 1 is connected to the output terminal of the line pipe data line Row, the field effect transistor is connected to between the output end of the row tube data line Row and the signal input unit 12; the output end of the signal control unit 11 is connected to the control end of the field effect transistor, and the first end of the field effect transistor is connected to the output end of the signal input unit 12, The second end of the field effect transistor is connected to the output end of the line pipe data line Row, so that when the field effect transistor is turned on, the voltage signal output from the output end of the line pipe data line Row flows to the signal input unit 12, and the driving voltage is reduced to The display unit 2 is controlled not to emit light.
  • a field effect transistor when the drive compensation circuit 1 is connected to the output terminal of the line pipe data line Row, the field effect transistor is connected to between the output end of the row tube data line Row and the signal input unit 12; the output end of the signal control unit 11 is connected to the control end of the field effect transistor, and
  • field effect transistors include but are not limited to: one of N-type field effect transistors and P-type field effect transistors.
  • the field effect transistor is an N-type field effect transistor
  • the gate of the N-type field effect transistor is the control terminal. One end is the source, and the second end is the drain.
  • the reference voltage of the signal input unit 12 in this example is lower than the driving voltage.
  • the N-type field effect transistor is turned on, the drain and the source of the N-type field effect transistor are conducted, and the reference voltage output by the signal input unit 12 can be applied. to the row tube data line Row, and then pull down the driving voltage on the row tube data line Row to control the display unit 2 not to emit light; when the field effect transistor is a P-type field effect transistor, the setting principle is similar, and will not be repeated here.
  • the field effect transistor when the drive compensation circuit 1 is connected to the output terminal of the column data line Out, the field effect transistor is connected between the output terminal of the column data line Out and the signal input unit 12;
  • the output end of the control unit 11 is connected to the control end of the field effect transistor, the second end of the field effect transistor is connected to the output end of the signal input unit 12, the first end of the field effect transistor is connected to the output end of the column tube data line Out,
  • the field effect transistor is turned on, the reference voltage output by the signal input unit 12 flows to the output terminal of the column tube data line Out, and the driving voltage is increased to control the display unit 2 not to emit light.
  • field effect transistors include but are not limited to: one of N-type field effect transistors and P-type field effect transistors.
  • the field effect transistor is an N-type field effect transistor
  • the gate of the N-type field effect transistor is the control terminal. One end is the drain, and the second end is the source.
  • the N-type field effect transistor is turned on, the drain and the source of the N-type field effect transistor are turned on, and the reference voltage output by the signal input unit 12 can be applied to On the tube data line Out, and then pull up the driving voltage on the tube data line Out to control the display unit 2 not to emit light;
  • the field effect transistor is a P-type field effect transistor, the setting principle is similar, and will not be repeated here.
  • control switch 13 does not limit the control switch 13 to be a field effect transistor, and the control switch 13 may also be a switch that can be turned on or off according to a control signal, such as a triode.
  • the drive compensation circuit 1 includes but is not limited to: signal Control unit 11, signal input unit 12, control switch 13; Signal control unit 11 is connected with the control end of control switch 13, signal input unit 12 is connected with the first end of control switch 13, the second end of control switch 13 is connected with display unit 2 is connected to the output end of the row pipe data line Row, and the output end of the row pipe data line Row is used to output the driving voltage to drive the display unit 2 to emit light; when the light emitting brightness of the display unit 2 exceeds the threshold value, the signal control unit 11 outputs the first The control signal is sent to the control terminal, and when the control terminal receives the first control signal, it turns on the first terminal and the second terminal; when the signal input unit 12 turns on the first terminal and the second terminal, it pulls down the driving voltage through the reference voltage , to control the display unit 2 not to emit light; the signal control unit 11 outputs the second
  • the signal control unit 11 includes: a timing controller 111; the timing controller 111 is used for outputting at least one first control in the period range in which the luminous brightness of the display unit 2 exceeds a threshold and the voltage of the column pipe data line Out is low. Signal; the timing controller 111 is also used to output a second control signal when the luminance of the display unit 2 does not exceed the threshold, and the first control signal and the second control signal are opposite signals.
  • the first control signal can be one of a high-level signal and a low-level signal. When the first control signal is a high-level signal, the second control signal is a low-level signal.
  • the first control signal The signal can make the control switch 13 be in the conduction state, and the second control signal can make the control switch 13 be in the cut-off state, for example, when the control switch 13 is an N-type field effect transistor, the first control signal is a high level signal, and the second The control signal is a low level signal.
  • the signal input unit 12 includes: a reference voltage module 121, and the reference voltage module 121 is used to output a reference voltage, wherein the reference voltage is lower than the driving voltage.
  • the reference voltage output by the reference voltage module 121 may be a ground voltage , or a constant voltage lower than the driving voltage output by the row pipe data line Row provided by the constant voltage voltage unit, so as to achieve the effect of pulling down the driving voltage output by the row pipe data line Row, so that the display unit 2 does not emit light.
  • the signal input unit 12 further includes: a discharge speed control module 122, the reference voltage module 121 is connected to the output end of the driving data line through the discharge speed control module 122; wherein the discharge speed control module 122 includes but does not Limited to: Resistors, where resistors can be fixed or variable.
  • the discharge speed control module 122 is a resistor, the larger the resistance value of the resistor, the slower the change of the driving voltage;
  • the discharge speed control module 122 is a resistor, the larger the resistance value of the resistor, the slower the change of the driving voltage;
  • the first end and the second end of the unit 12 are turned on, the slower the speed of pulling down the driving voltage is, the smaller the resistance is, the faster the speed of pulling down the driving voltage is.
  • the field effect transistor is connected between the output terminal of the line pipe data line Row and the signal input unit 12; the output terminal of the signal control unit 11 is connected with the control terminal of the field effect transistor, and the first terminal of the field effect transistor is connected with the signal input unit 12 The output end is connected, and the second end of the field effect transistor is connected to the output end of the row pipe data line Row, so that when the field effect transistor is turned on, the reference voltage output by the signal input unit 12 is applied to the row pipe data line Row, reducing the driving voltage to control the display unit 2 not to emit light.
  • field effect transistors include but are not limited to: one of N-type field effect transistors and P-type field effect transistors.
  • the field effect transistor is an N-type field effect transistor
  • the gate of the N-type field effect transistor is the control terminal. One end is the source, and the second end is the drain.
  • the N-type field effect transistor is turned on, the drain and the source of the N-type field effect transistor are turned on, and the reference voltage output by the signal input unit 12 can be applied to On the row tube data line Row, and then pull down the driving voltage on the row tube data line Row to control the display unit 2 not to emit light;
  • the field effect transistor is a P-type field effect transistor, the setting principle is similar, and will not be repeated here.
  • this embodiment also provides a display device, the display device includes a plurality of driving data lines, each driving data line includes: a row pipe data line Row, a column pipe data line Out; a row pipe data line Row and a column data line
  • a display unit 2 is arranged between the pipe data lines Out, and the output end of at least one of the data lines driven is provided with the driving compensation circuit 1 as above, and the driving compensation circuit 1 can change the driving voltage output by the driving data lines, thereby making The light emitting unit does not emit light.
  • the display unit 2 includes a red light display unit, a green light display unit and a blue light display unit; or, the display unit 2 includes a red light display unit, a green light display unit, a blue light display unit and a yellow light display unit.
  • This embodiment provides a driving method for a display unit, as shown in FIG. 12 , which includes but is not limited to:
  • control terminal receives the first control signal, turn on the first terminal and the second terminal of the control switch;
  • the first control signal is sent to change the driving voltage for driving the display unit, so that the display unit does not emit light within the time of the first control signal, reducing the The brightness of the display unit avoids the problem that the brightness of the display unit is too bright, and when there are multiple display units, the overall display uniformity of the display unit is improved.
  • the driving method of the display unit further includes: outputting a second control signal to the control terminal through the signal control unit when the luminous brightness of the display unit does not exceed the threshold; when the control terminal receives the second control signal, cut off first end and second end.
  • the present embodiment also provides a computer-readable storage medium comprising volatile memory implemented in any method or technology for storing information, such as instructions, data structures, computer program modules, or other data.
  • volatile or nonvolatile, removable or non-removable media include but are not limited to RAM (Random Access Memory, random access memory), ROM (Read-Only Memory, read-only memory), EEPROM (Electrically Erasable Programmable Read Only Memory, electrically erasable programmable read-only memory ), Flash or other memory technologies, CD-ROM (Compact Disc Read-Only Memory, Digital Versatile Disk (DVD) or other optical disk storage, magnetic cartridge, magnetic tape, magnetic disk storage or other magnetic storage device, or can be used to store desired information and can be accessed by a computer any other medium.
  • RAM Random Access Memory
  • ROM Read-Only Memory
  • EEPROM Electrically Erasable Programmable Read Only Memory
  • Flash or other memory technologies CD-ROM (Compact Disc Read-Only Memory, Digital Versatile Dis
  • the computer-readable storage medium in this embodiment may be used to store one or more computer programs, and the one or more computer programs stored therein may be executed by a processor to implement at least one step of the above-mentioned driving method of the display unit.
  • the functional modules/units in the system and the device can be implemented as software (the computer program code executable by the computing device can be used to realize ), firmware, hardware, and appropriate combinations thereof.
  • the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be composed of several physical components. Components cooperate to execute.
  • Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit .
  • communication media typically embody instructions, data structures, computer program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism, and can include any information delivery media, as is well known to those of ordinary skill in the art. Therefore, the application is not limited to any specific combination of hardware and software.

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Abstract

一种驱动补偿电路（1）、显示装置以及显示单元的驱动方法，其中驱动补偿电路（1）包括信号控制单元（11）、信号输入单元（12）、控制开关（13）。在显示单元（2）的发光亮度超出阈值时，通过信号控制单元（11）发出第一控制信号导通控制开关（13），使得信号输入单元（11）改变驱动显示单元（2）的驱动电压，进而使得显示单元（2）在第一控制信号的时间内不发光；在显示单元（2）的发光亮度未超出阈值时，截止控制开关（13）。

Description

一种驱动补偿电路、显示装置以及显示单元的驱动方法 技术领域
本申请涉及半导体器件领域，尤其涉及一种驱动补偿电路、显示装置以及显示单元的驱动方法。
 背景技术
发光二极管(Light-Emitting Diode，LED)，Mini-LED显示技术具有高亮度、高响应速度、低功耗、长寿命等优点，可以应用于超大屏高清显示，如监控指挥，高清演播，高端影院，医疗检测等专业领域或者户外广告，会议会展，办公显示等商业领域，成为人们追求新一代显示技术的研究热点。
随着小间距的发展， LED显示屏对行驱动提出了更高的要求，从单纯的P-MOSFET（Positive Channel Metal Oxide Semiconductor Field-Effect Transistor，P型金属-氧化物半导体场效应晶体管）实现行切换，到集成度更高，功能更强的多功能行驱动，现目前，因为显示面板中的电容等的影响，行驱动容易出现显示单元亮度过渡不均匀，显示均一性差（亮的很亮，暗的很暗）的问题。
因此，如何提高行驱动中显示均一性是亟需解决的问题。
 技术问题
鉴于上述相关技术的不足，本申请的目的在于提供一种驱动补偿电路、显示装置以及显示单元的驱动方法，旨在解决现有的行驱动容易出现显示单元亮度过渡不均匀，显示均一性差的问题。
 技术解决方案
一种驱动补偿电路，包括：
控制开关；
与控制开关的控制端连接的信号控制单元；
以及与控制开关的第一端连接的信号输入单元；
控制开关的第二端与显示单元的驱动数据线的输出端连接，驱动数据线的输出端被配置为输出驱动电压，以驱动显示单元发光；
信号控制单元被配置为在显示单元的发光亮度超出阈值时，输出第一控制信号到控制端，控制端在接收到第一控制信号时，导通第一端与第二端；信号输入单元被配置为在第一端与第二端导通时，对驱动电压进行改变，以控制显示单元在第一控制信号的时间内不发光；信号控制单元还被配置为在显示单元的发光亮度未超出阈值时，输出第二控制信号到控制端，控制端在接收到第二控制信号时，截止第一端与第二端。
基于同样的发明构思，本申请还提供一种显示装置，显示装置包括多个驱动数据线，每一驱动数据线包括：行管数据线以及列管数据线；行管数据线与列管数据线之间设置有显示单元，且驱动数据线中的至少一个数据线的输出端设置有如上述的驱动补偿电路。
基于同样的发明构思，本申请还提供一种显示单元的驱动方法，应用于如上的驱动补偿电路，显示单元的驱动方法包括：通过信号控制单元在显示单元的发光亮度超出阈值时，输出第一控制信号到控制开关的控制端；控制端在接收到第一控制信号时，导通控制开关第一端与第二端；以及信号输入单元在第一端与第二端导通时，对显示单元的驱动电压进行改变，以控制显示单元不发光。
 有益效果
上述驱动补偿电路，包括信号控制单元、信号输入单元、控制开关，在显示单元的发光亮度超出阈值时，通过信号控制单元发出第一控制信号导通控制开关，使得信号输入单元改变驱动显示单元的驱动电压，进而使得显示单元在第一控制信号的时间内不发光，降低了显示单元的亮度，避免了显示单元的亮度偏亮的问题，在具有多个显示单元时，提升了显示单元整体的显示均一性。
上述显示装置，通过驱动补偿电路中的信号控制单元、信号输入单元、控制开关，在显示单元的发光亮度超出阈值时，通过信号控制单元发出第一控制信号导通控制开关，使得信号输入单元改变驱动显示单元的驱动电压，进而使得显示单元在第一控制信号的时间内不发光，降低了显示单元的亮度，避免了显示单元的亮度偏亮的问题，在具有多个显示单元时，提升了显示单元整体的显示均一性。
上述显示单元的驱动方法，通过在显示单元的发光亮度超出阈值时，发出第一控制信号，以改变驱动显示单元的驱动电压，进而使得显示单元在第一控制信号的时间内不发光，降低了显示单元的亮度，避免了显示单元的亮度偏亮的问题，在具有多个显示单元时，提升了显示单元整体的显示均一性。
 附图说明
图1为本申请实施例提供的行管数据线Row，列管数据线Out的开关控制信号的波形图；
图2为本申请实施例提供的显示单元根据控制信号发光的基本示意图；
图3为本申请实施例提供的显示单元受电容影响的基本示意图；
图4为本申请实施例提供的驱动补偿电路的基本结构示意图；
图5为本申请实施例提供的驱动补偿电路与行管数据线输出端连接的基本结构示意图；
图6为本申请实施例提供的驱动补偿电路与列管数据线输出端连接的基本结构示意图；
图7为本申请实施例提供的信号控制单元的基本结构示意图；
图8为本申请实施例提供的信号控制单元发出一个第一控制信号改变驱动电压的基本示意图；
图9为本申请实施例提供的信号控制单元发出两个第一控制信号改变驱动电压的基本示意图；
图10为本申请实施例提供的信号输入单元的基本结构示意图；
图11为本申请实施例提供的控制开关的基本结构示意图
图12为本申请另一可选实施例提供的显示单元的驱动方法的基本流程示意图；
附图标记说明：
1-驱动补偿电路、11-信号控制单元、12-信号输入单元、13-控制开关、2-显示单元、111-时序控制器、121-参考电压模块、122-放电速度控制模块、Row-行管数据线、Out-列管数据线、C-寄生电容、Driver IC-驱动芯片。
 本发明的实施方式
为了便于理解本申请，下面将参照相关附图对本申请进行更全面的描述。附图中给出了本申请的较佳实施方式。但是，本申请可以以许多不同的形式来实现，并不限于本文所描述的实施方式。相反地，提供这些实施方式的目的是使对本申请的公开内容理解的更加透彻全面。
除非另有定义，本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同。本文中在本申请的说明书中所使用的术语只是为了描述具体的实施方式的目的，不是旨在于限制本申请。
相关技术中，随着小间距的发展，LED显示屏对行驱动提出了更高的要求，从单纯的P-MOSFET实现行切换，到集成度更高，功能更强的多功能行驱动，仅以显示单元（以显示单元为LED进行说明）共阳极（即显示单元的阳极在行管数据线Row上）为背景介绍，如图1所示，图1所示为行管数据线Row，列管数据线Out的开关控制信号的波形图，当行管数据线Row（n+1）的控制信号为低时，行管数据线上的驱动电压（即显示单元的阳极电压）就会被拉高，驱动芯片Driver IC上的列管数据线Out的控制信号为低的时候，则列管数据线上的驱动电压（即显示单元的阴极上的电压）被拉低，此时行管数据线、列管数据线之间的显示单元就会受到驱动，进行发光；当列管数据线Out的控制信号宽窄不同时，就会得到的不同的亮度，如图2所示。但是因为寄生电容的存在，如图3所示，比如显示单元的寄生电容C，行管数据线之间以及行管数据线与接地点GND，列管数据线之间以及管数据线与接地点GND的寄生电容C，会影响亮度过渡（即同时显示连续多灰阶，比如0~255灰阶），导致显示均一性差（亮的很亮，暗的又很暗）。
基于此，本申请希望提供一种能够解决上述技术问题的方案，其详细内容将在后续实施例中得以阐述。
本申请实施例
本申请实施例提供一种驱动补偿电路1，如图4所示，驱动补偿电路1包括：信号控制单元11、信号输入单元12，控制开关13；信号控制单元11与控制开关13的控制端连接，信号输入单元12与控制开关13的第一端连接，控制开关13的第二端与显示单元2的驱动数据线的输出端连接，驱动数据线的输出端用于输出驱动电压，驱动显示单元2发光；信号控制单元11在显示单元2的发光亮度超出阈值时，输出第一控制信号到控制端，控制端在接收到第一控制信号时，导通第一端与第二端；信号输入单元12在第一端与第二端导通时，对驱动电压进行改变，以控制显示单元2不发光；信号控制单元11在显示单元2的发光亮度未超出阈值时，输出第二控制信号到控制端，控制端在接收到第二控制信号时，截止第一端与第二端。
本实施例提供的驱动补偿电路，包括信号控制单元、信号输入单元、控制开关，在显示单元的发光亮度超出阈值时，通过信号控制单元发出第一控制信号导通控制开关，使得信号输入单元改变驱动显示单元的驱动电压，进而使得显示单元在第一控制信号的时间内不发光，降低了显示单元的亮度，避免了显示单元的亮度偏亮的问题，在具有多个显示单元时，提升了显示单元整体的显示均一性。
应当理解的是，识别显示单元2的发光亮度是否超出阈值的方法多种多样，例如，可以通过传感器对发光亮度进行监测，以识别显示单元2的发光亮度是否超出阈值；或是相关设计人员在外部进行调试时，对发光亮度是否超出阈值进行一个调试，以识别显示单元2的发光亮度是否超出阈值，本实施例并不限制识别显示单元2的发光亮度是否超出阈值的方法，其中，显示单元2包括但不限于：LED芯片显示单元，有机发光二极管(Organic Light-Emitting Diode，OLED)芯片显示单元，微发光二极管(Micro Light Emitting Diode，Micro LED)芯片显示单元，迷你发光二极管(Mini Light Emitting Diode，MiniLED)芯片显示单元中的至少一个。
应当理解的是，显示单元2设置在行管数据线Row与列管数据线Out之间，也即显示单元2的一端连接行管数据线Row，另一端连接列管数据线Out。其中，例如显示单元2的阳极连接行管数据线Row时，当行管数据线Row输出的驱动电压为高，列管数据线输出的驱动电压为低时，设置在行管数据线Row与列管数据线Out之间的显示单元2发光，也即，行管数据线Row与列管数据线Out都可以控制对应的显示单元2不发光；驱动数据线包括：行管数据线Row以及列管数据线Out，与驱动补偿电路1连接的可以是其中任一个。
承接上例，驱动补偿电路1可以是与行管数据线Row的输出端连接，也可以是与列管数据线Out的输出端连接，具体的，控制开关13的第二端与显示单元2的驱动数据线的输出端连接包括：第二端与行管数据线Row的输出端连接，如图5所示，或，第二端与列管数据线Out的输出端连接，如图6所示；应当理解的是，在一些示例中，可以在列管数据线Out的输出端以及行管数据线Row的输出端都设置驱动补偿电路1。
承接上例，在一些示例中，第二端与行管数据线Row的输出端连接，驱动补偿电路1可以将行管数据线Row输出的驱动电压拉低，使得行管数据线Row输出的驱动电压为低，列管数据线输出的驱动电压为低，进而使得显示单元2不发光；在一些示例中，第二端与列管数据线Out的输出端连接，驱动补偿电路1可以将列管数据线Out输出的驱动电压拉高，使得行管数据线Row输出的驱动电压为高，列管数据线输出的驱动电压为高，进而使得显示单元2在第一控制信号时间内不发光。
可以理解的是，在进行布局时，上述驱动补偿电路1可以全部或部分设置在驱动数据线内部；驱动补偿电路1也可以全部外置在驱动数据线的外部；例如，显示驱动补偿电路1可以全部或部分设置在行管数据线Row内部。
在本实施例的一些示例中，如图7所示，信号控制单元11包括但不限于：时序控制器111；时序控制器111用于在显示单元2的发光亮度超出阈值，且列管数据线Out的电压为低的周期范围内，输出至少一个第一控制信号。例如图8所示，驱动补偿电路1与行管数据线Row的输出端连接，输出一个第一控制信号，在t时刻拉低行管数据线Row输出的驱动电压，将行管数据线Row的驱动电压的波形拉低为行管数据线Row’的驱动电压的波形。还例如图9所示，或是输出两个第一控制信号，在t2时刻与t1时刻拉低行管数据线Row输出的驱动电压，将行管数据线Row的驱动电压的波形拉低为行管数据线Row’的驱动电压的波形。应当理解的是，第一控制信号的个数、宽度与输出位置可依实际使用情况而改变，但需要确保必须在列管数据线Outm拉低的时间内（也即列管数据线Outm的驱动电压为低的时间内），不然无法起到降低显示单元2发光亮度的效果。
在本实施例的一些示例中，时序控制器111还用于在显示单元2的发光亮度未超出阈值时输出第二控制信号，第一控制信号与第二控制信号为相反信号。
毫无疑义的是，其中，第一控制信号可以为高电平信号、低电平信号中的一个，当第一控制信号为高电平信号时，第二控制信号为低电平信号，应当理解的是，其中第一控制信号能够使得控制开关13为导通状态，第二控制信号能够使得控制开关13为截止状态，例如，当控制开关13为N型场效应晶体管时，第一控制信号为高电平信号，第二控制信号为低电平信号。
在本实施例的一些示例中，信号输入单元12包括：参考电压模块121，参考电压模块121用于输出参考电压；当第二端与行管数据线Row的输出端连接时，参考电压低于驱动电压；当第二端与列管数据线Out的输出端连接时，参考电压高于驱动电压。
应当理解的是，当驱动补偿电路1与行管数据线Row的输出端连接时，参考电压模块121输出的参考电压可以是接地电压，如图10所示，或是由恒压电压单元提供的一个低于行管数据线Row输出的驱动电压的恒压，进而达到拉低行管数据线Row输出的驱动电压的效果，以使得显示单元2不发光。
应当理解的是，当驱动补偿电路1与列管数据线Out的输出端连接时，参考电压模块121可以是由恒压电压单元提供的一个高于列管数据线Out输出的驱动电压的恒压，进而达到提升列管数据线Out输出的驱动电压的效果，以使得显示单元2不发光。
在本实施例的一些示例中，信号输入单元12还包括：放电速度控制模块122，参考电压模块121通过放电速度控制模块122与驱动数据线的输出端连接；其中放电速度控制模块122包括但不限于：电阻，如图10所示；其中电阻可以为固定电阻，也可以是可变电阻。当放电速度控制模块122为电阻时，电阻的阻值越大，驱动电压的变化越慢；例如，当驱动补偿电路1与行管数据线Row的输出端连接时，电阻越大，则信号输入单元12在第一端与第二端导通时，拉低驱动电压的速度越慢，电阻越小，拉低驱动电压的速度越快。
承接上例，基于相同的原理，当驱动补偿电路1与列管数据线Out的输出端连接时，电阻越大，则信号输入单元12在第一端与第二端导通时，拉高驱动电压的速度越慢，电阻越小，拉高驱动电压的速度越快。应当理解的是，放电速度控制模块122可以不设置在信号输入单元12内，设置在信号输入单元12与驱动数据线的输出端之间也能够实现相同的效果。
在本实施例的一些示例中，如图11所示，控制开关13包括但不限于：场效应晶体管；其中，当驱动补偿电路1与行管数据线Row的输出端连接时，场效应晶体管连接于行管数据线Row的输出端和信号输入单元12之间；信号控制单元11的输出端与场效应晶体管的控制端连接，场效应晶体管的第一端与信号输入单元12的输出端连接，场效应晶体管的第二端与行管数据线Row的输出端连接，以使得场效应晶体管导通时，行管数据线Row的输出端输出的电压信号流向信号输入单元12，降低驱动电压，以控制显示单元2不发光。
承接上例，场效应晶体管包括但不限于：N型场效应晶体管、P型场效应晶体管中的一个，当场效应晶体管为N型场效应晶体管时，N型场效应晶体管的栅极为控制端、第一端为源极、第二端为漏极。本示例的信号输入单元12的参考电压低于驱动电压在N型场效应晶体管导通时，N型场效应晶体管的漏极和源极之间导通，信号输入单元12输出的参考电压可以施加到行管数据线Row上，进而拉低行管数据线Row上的驱动电压，以控制显示单元2不发光；当场效应晶体管为P型场效应晶体管时，设置原理类似，在此不再赘述。
在本实施例的一些示例中，其中，当驱动补偿电路1与列管数据线Out的输出端连接时，场效应晶体管连接于列管数据线Out的输出端和信号输入单元12之间；信号控制单元11的输出端与场效应晶体管的控制端连接，场效应晶体管的第二端与信号输入单元12的输出端连接，场效应晶体管的第一端与列管数据线Out的输出端连接，以使得场效应晶体管导通时，信号输入单元12输出的参考电压流向列管数据线Out的输出端，升高驱动电压，以控制显示单元2不发光。
承接上例，场效应晶体管包括但不限于：N型场效应晶体管、P型场效应晶体管中的一个，当场效应晶体管为N型场效应晶体管时，N型场效应晶体管的栅极为控制端、第一端为漏极、第二端为源极，在N型场效应晶体管导通时，N型场效应晶体管的漏极和源极之间导通，信号输入单元12输出的参考电压可以施加到列管数据线Out上，进而拉高列管数据线Out上的驱动电压，以控制显示单元2不发光；当场效应晶体管为P型场效应晶体管时，设置原理类似，在此不再赘述。
应当理解的是，本实施例并不限定控制开关13为场效应晶体管，控制开关13还可以是三极管等能够根据控制信号导通或截止的开关。
 为了更好的理解本申请，本实施例提供一种更为具体的示例对本申请进行说明，本示例提供一种驱动补偿电路1，如图5所示，驱动补偿电路1包括但不限于：信号控制单元11、信号输入单元12，控制开关13；信号控制单元11与控制开关13的控制端连接，信号输入单元12与控制开关13的第一端连接，控制开关13的第二端与显示单元2的行管数据线Row的输出端连接，行管数据线Row的输出端用于输出驱动电压，驱动显示单元2发光；信号控制单元11在显示单元2的发光亮度超出阈值时，输出第一控制信号到控制端，控制端在接收到第一控制信号时，导通第一端与第二端；信号输入单元12在第一端与第二端导通时，通过参考电压拉低驱动电压，以控制显示单元2不发光；信号控制单元11在显示单元2的发光亮度未超出阈值时，输出第二控制信号到控制端，控制端在接收到第二控制信号时，截止第一端与第二端。
其中，信号控制单元11包括：时序控制器111；时序控制器111用于在显示单元2的发光亮度超出阈值，且列管数据线Out的电压为低的周期范围内，输出至少一个第一控制信号；时序控制器111还用于在显示单元2的发光亮度未超出阈值时输出第二控制信号，第一控制信号与第二控制信号为相反信号。第一控制信号可以为高电平信号、低电平信号中的一个，当第一控制信号为高电平信号时，第二控制信号为低电平信号，应当理解的是，其中第一控制信号能够使得控制开关13为导通状态，第二控制信号能够使得控制开关13为截止状态，例如，当控制开关13为N型场效应晶体管时，第一控制信号为高电平信号，第二控制信号为低电平信号。
在本实施例的一些示例中，信号输入单元12包括：参考电压模块121，参考电压模块121用于输出参考电压，其中，参考电压低于驱动电压参考电压模块121输出的参考电压可以是接地电压，或是由恒压电压单元提供的一个低于行管数据线Row输出的驱动电压的恒压，进而达到拉低行管数据线Row输出的驱动电压的效果，以使得显示单元2不发光。
在本实施例的一些示例中，信号输入单元12还包括：放电速度控制模块122，参考电压模块121通过放电速度控制模块122与驱动数据线的输出端连接；其中放电速度控制模块122包括但不限于：电阻，其中电阻可以为固定电阻，也可以是可变电阻。当放电速度控制模块122为电阻时，电阻的阻值越大，驱动电压的变化越慢；例如，当驱动补偿电路1与行管数据线Row的输出端连接时，电阻越大，则信号输入单元12在第一端与第二端导通时，拉低驱动电压的速度越慢，电阻越小，拉低驱动电压的速度越快。
场效应晶体管连接于行管数据线Row的输出端和信号输入单元12之间；信号控制单元11的输出端与场效应晶体管的控制端连接，场效应晶体管的第一端与信号输入单元12的输出端连接，场效应晶体管的第二端与行管数据线Row的输出端连接，以使得场效应晶体管导通时，信号输入单元12输出的参考电压施加到行管数据线Row上，降低驱动电压，以控制显示单元2不发光。
承接上例，场效应晶体管包括但不限于：N型场效应晶体管、P型场效应晶体管中的一个，当场效应晶体管为N型场效应晶体管时，N型场效应晶体管的栅极为控制端、第一端为源极、第二端为漏极，在N型场效应晶体管导通时，N型场效应晶体管的漏极和源极之间导通，信号输入单元12输出的参考电压可以施加到行管数据线Row上，进而拉低行管数据线Row上的驱动电压，以控制显示单元2不发光；当场效应晶体管为P型场效应晶体管时，设置原理类似，在此不再赘述。
基于相同的构思，本实施例还提供一种显示装置，显示装置包括多个驱动数据线，每一驱动数据线包括：行管数据线Row、列管数据线Out；行管数据线Row与列管数据线Out之间设置有显示单元2，且驱动数据线中的至少一个数据线的输出端设置有如上的驱动补偿电路1，驱动补偿电路1能够改变驱动数据线输出的驱动电压，进而使得发光单元不发光。
其中，显示单元2包括红光显示单元、绿光显示单元和蓝光显示单元；或，显示单元2包括红光显示单元、绿光显示单元、蓝光显示单元和黄光显示单元。
本申请另一可选实施例
本实施例提供一种显示单元的驱动方法，请参见图12所示，其包括但不限于：
S101、通过信号控制单元在显示单元的发光亮度超出阈值时，输出第一控制信号到控制开关的控制端；
S102、控制端在接收到第一控制信号时，导通控制开关的第一端与第二端；
S103、信号输入单元在第一端与第二端导通时，对显示单元的驱动电压进行改变，以控制显示单元不发光。
上述显示单元的驱动方法，通过在显示单元的发光亮度超出阈值时，发出第一控制信号，以改变驱动显示单元的驱动电压，进而使得显示单元在第一控制信号的时间内不发光，降低了显示单元的亮度，避免了显示单元的亮度偏亮的问题，在具有多个显示单元时，提升了显示单元整体的显示均一性。
在一些实施例中，显示单元的驱动方法还包括：通过信号控制单元在显示单元的发光亮度未超出阈值时，输出第二控制信号到控制端；控制端在接收到第二控制信号时，截止第一端与第二端。
本实施例还提供了一种计算机可读存储介质，该计算机可读存储介质包括在用于存储信息(诸如指令、数据结构、计算机程序模块或其他数据)的任何方法或技术中实施的易失性或非易失性、可移除或不可移除的介质。计算机可读存储介质包括但不限于RAM（Random Access Memory，随机存取存储器），ROM（Read-Only Memory，只读存储器），EEPROM（Electrically Erasable Programmable Read Only Memory，带电可擦可编程只读存储器）、闪存或其他存储器技术、CD-ROM（Compact Disc Read-Only Memory，光盘只读存储器），数字多功能盘(DVD)或其他光盘存储、磁盒、磁带、磁盘存储或其他磁存储装置、或者可以用于存储期望的信息并且可以被计算机访问的任何其他的介质。
本实施例中的计算机可读存储介质可用于存储一个或者多个计算机程序，其存储的一个或者多个计算机程序可被处理器执行，以实现上述显示单元的驱动方法的至少一个步骤。
可见，本领域的技术人员应该明白，上文中所公开方法中的全部或某些步骤、系统、装置中的功能模块/单元可以被实施为软件（可以用计算装置可执行的计算机程序代码来实现）、固件、硬件及其适当的组合。在硬件实施方式中，在以上描述中提及的功能模块/单元之间的划分不一定对应于物理组件的划分；例如，一个物理组件可以具有多个功能，或者一个功能或步骤可以由若干物理组件合作执行。某些物理组件或所有物理组件可以被实施为由处理器，如中央处理器、数字信号处理器或微处理器执行的软件，或者被实施为硬件，或者被实施为集成电路，如专用集成电路。此外，本领域普通技术人员公知的是，通信介质通常包含指令、数据结构、计算机程序模块或者诸如载波或其他传输机制之类的调制数据信号中的其他数据，并且可包括任何信息递送介质。所以，本申请不限制于任何特定的硬件和软件结合。
应当理解的是，本申请的应用不限于上述的举例，对本领域普通技术人员来说，可以根据上述说明加以改进或变换，所有这些改进和变换都应属于本申请所附权利要求的保护范围。

Claims (16)

  1. 一种驱动补偿电路，包括：
    控制开关；
    与所述控制开关的控制端连接的信号控制单元；
    以及与所述控制开关的第一端连接的信号输入单元；
    所述控制开关的第二端与显示单元的驱动数据线的输出端连接，所述驱动数据线包括：行管数据线以及列管数据线，所述驱动数据线的输出端被配置为输出驱动电压，以驱动所述显示单元发光；
    所述信号控制单元被配置为在所述显示单元的发光亮度超出阈值时，输出第一控制信号到所述控制端，所述控制端在接收到所述第一控制信号时，导通所述第一端与所述第二端；所述信号输入单元被配置为在所述第一端与所述第二端导通时，对所述驱动电压进行改变，以控制所述显示单元在所述第一控制信号的时间内不发光；所述信号控制单元还被配置为在所述显示单元的发光亮度未超出阈值时，输出第二控制信号到所述控制端，所述控制端在接收到所述第二控制信号时，截止所述第一端与所述第二端。
  2. 如权利要求1所述的驱动补偿电路，其中，所述控制开关的第二端与显示单元的驱动数据线的输出端连接包括：所述第二端与所述行管数据线的输出端连接。
  3. 如权利要求1所述的驱动补偿电路，其中，所述控制开关的第二端与显示单元的驱动数据线的输出端连接包括：
    所述第二端与所述列管数据线的输出端连接。
  4. 如权利要求1所述的驱动补偿电路，其中，所述信号控制单元包括：时序控制器；
    所述时序控制器被配置为在所述显示单元的发光亮度超出阈值，且所述列管数据线输出的驱动电压为低的周期范围内，输出至少一个所述第一控制信号；
    所述时序控制器还被配置为在所述显示单元的发光亮度未超出阈值时输出所述第二控制信号，所述第一控制信号与所述第二控制信号为相反信号。
  5. 如权利要求1所述的驱动补偿电路，其中，所述信号输入单元包括：
    参考电压模块，所述参考电压模块被配置为输出参考电压。
  6. 如权利要求5所述的驱动补偿电路，其中，所述信号输入单元还包括：
    放电速度控制模块，所述参考电压模块通过所述放电速度控制模块与所述驱动数据线的输出端连接。
  7. 如权利要求6所述的驱动补偿电路，其中，所述放电速度控制模块包括电阻。
  8. 如权利要求5所述的驱动补偿电路，其中，所述第二端与所述行管数据线的输出端连接，所述参考电压低于所述驱动电压。
  9. 如权利要求5所述的驱动补偿电路，其中，所述第二端与所述列管数据线的输出端连接，所述参考电压高于所述驱动电压。
  10. 如权利要求2所述的驱动补偿电路，其中，所述控制开关包括：场效应晶体管；
    其中，所述场效应晶体管连接于所述行管数据线的输出端和所述信号输入单元之间；所述信号控制单元的输出端与所述场效应晶体管的所述控制端连接，所述场效应晶体管的所述第一端与所述信号输入单元的输出端连接，所述场效应晶体管的所述第二端与所述行管数据线的输出端连接，所述场效应晶体管的所述第一端与所述第二端导通时，所述行管数据线的输出端输出的电压信号流向所述信号输入单元，降低所述驱动电压，以控制所述显示单元不发光。
  11. 如权利要求3所述的驱动补偿电路，其中，所述控制开关包括：场效应晶体管；
    所述场效应晶体管连接于所述列管数据线的输出端和所述信号输入单元之间；所述信号控制单元的输出端与所述场效应晶体管的所述控制端连接，所述场效应晶体管的所述第二端与所述信号输入单元的输出端连接，所述场效应晶体管的所述第一端与所述列管数据线的输出端连接，所述场效应晶体管的所述第一端与所述第二端导通时，所述信号输入单元输出的参考电压流向所述列管数据线的输出端，升高所述驱动电压，以控制所述显示单元不发光。
  12. 一种显示装置，包括多个驱动数据线，每一所述驱动数据线包括：行管数据线以及列管数据线；
    所述行管数据线与所述列管数据线之间设置有显示单元，且所述驱动数据线中的至少一个数据线的输出端设置有如权利要求1所述的驱动补偿电路。
  13. 如权利要求12所述的显示装置，其中，所述显示单元包括红光显示单元、绿光显示单元和蓝光显示单元。
  14. 如权利要求12所述的显示装置，其中，所述显示单元包括红光显示单元、绿光显示单元、蓝光显示单元和黄光显示单元。
  15. 一种显示单元的驱动方法，应用于如权利要求1所述的驱动补偿电路，所述显示单元的驱动方法包括：
    通过所述信号控制单元在所述显示单元的发光亮度超出阈值时，输出第一控制信号到控制开关的控制端；
    所述控制端在接收到所述第一控制信号时，导通控制开关所述第一端与所述第二端；
    以及所述信号输入单元在所述第一端与所述第二端导通时，对所述显示单元的驱动电压进行改变，以控制所述显示单元不发光。
  16. 如权利要求15所述的显示单元的驱动方法，其中，所述显示单元的驱动方法还包括：
    通过所述信号控制单元在所述显示单元的发光亮度未超出阈值时，输出第二控制信号到所述控制端；
    所述控制端在接收到所述第二控制信号时，截止所述第一端与所述第二端。
PCT/CN2022/111404 2021-08-17 2022-08-10 一种驱动补偿电路、显示装置以及显示单元的驱动方法 WO2023020348A1 (zh)

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