CN114974104A - Display circuit module, display and computer equipment - Google Patents

Display circuit module, display and computer equipment Download PDF

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Publication number
CN114974104A
CN114974104A CN202210772533.6A CN202210772533A CN114974104A CN 114974104 A CN114974104 A CN 114974104A CN 202210772533 A CN202210772533 A CN 202210772533A CN 114974104 A CN114974104 A CN 114974104A
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China
Prior art keywords
circuit module
tft
electrically connected
unit
display
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CN202210772533.6A
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CN114974104B (en
Inventor
陈书志
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Shanghai Wingtech Electronic Technology Co Ltd
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Shanghai Wingtech Electronic Technology Co Ltd
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Priority to CN202210772533.6A priority Critical patent/CN114974104B/en
Publication of CN114974104A publication Critical patent/CN114974104A/en
Priority to PCT/CN2022/137588 priority patent/WO2024001055A1/en
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    • 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
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping

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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)
  • Control Of El Displays (AREA)

Abstract

The application discloses display circuit module, display and computer equipment belongs to display technical field. This display circuit module includes: the display circuit module comprises a driving circuit module, a pixel circuit module, a detection circuit module and a display unit; the detection circuit module is configured to acquire a first voltage signal of a current output end of the pixel circuit module when detecting that no current flows out from the current output end of the pixel circuit module after a display frame is finished; the detection circuit module is also configured to acquire a second voltage signal input by the driving circuit module to the voltage input port of the pixel circuit module, and acquire a compensation voltage according to the first voltage signal and the second voltage signal; the driving circuit module is configured to adjust a voltage signal input to the voltage input port of the pixel circuit module according to the compensation voltage to increase a driving time period of the pixel circuit module to the display unit. This scheme can improve the stability that the display circuit module during operation shows.

Description

Display circuit module, display and computer equipment
Technical Field
The application relates to the technical field of displays, in particular to a display circuit module, a display and computer equipment.
Background
With the rapid development of the display technology field, display functions are implemented by displays in various computer devices. Among them, Micro-light emitting diode (Micro-LED) technology is rapidly developed in the field of displays.
In the Micro-LED display technology, the adopted Micro-LED can achieve higher brightness and has no problem of screen burning, so that more and more display screens are applied to the Micro-LED. The Micro-LED is a current-type driven light emitting device, the wavelength change of the Micro-LED depends on the current density, the display screen of the Micro-LED is usually driven in an active driving mode in the driving process, and in the driving process, because the voltage provided by a voltage input end is small in low gray scale display, the brightness difference of the Micro-LED is not obvious when the Micro-LED is modulated in a small unit voltage range, the phenomenon that the Micro-LED cannot normally display certain gray scales in the low gray scale range exists, and the problem of unstable light emission of the Micro-LED is caused.
Disclosure of Invention
The embodiment of the application provides a display circuit module, a display and computer equipment, and the voltage of a voltage input end is compensated when displaying in a low gray scale, so that the display stability of the display circuit module during working is improved.
In one aspect, an embodiment of the present application provides a display circuit module, which includes a driving circuit module, a pixel circuit module and a detection circuit module;
the driving circuit module is electrically connected with a voltage input port of the pixel circuit module, the driving circuit module is also electrically connected with the detection circuit module, the detection circuit module is also electrically connected with a current output end of the pixel circuit module, and the pixel circuit module comprises a display unit;
the detection circuit module is configured to acquire a first voltage signal of a current output end of the pixel circuit module when detecting that no current flows out from the current output end of the pixel circuit module after a display frame is finished;
the detection circuit module is further configured to acquire a second voltage signal input by the driving circuit module to a voltage input port of the pixel circuit module, and acquire a compensation voltage according to the first voltage signal and the second voltage signal;
the driving circuit module is configured to adjust a voltage signal input to a voltage input port of the pixel circuit module according to the compensation voltage to increase a driving time period of the display unit in the pixel circuit module.
Optionally, the pixel circuit module includes an active driving unit, a switching unit and a passive driving unit;
the active driving unit is electrically connected with the switching unit, the switching unit is also electrically connected with the passive driving unit, and the switching unit is also electrically connected with the driving circuit module;
the driving circuit module is further configured to control the switching unit so that the pixel circuit module drives the display unit through the active driving unit and/or the passive driving unit.
Optionally, the active driving unit is configured to drive the display unit in an active addressing driving AM manner;
the passive driving unit is configured to drive the display unit in a Pulse Width Modulation (PWM) manner.
Optionally, the detection circuit module includes a first TFT and a first acquisition unit;
the detection circuit module is electrically connected with the current output end of the passive driving unit through the drain electrode of the first TFT;
the detection circuit module is electrically connected with the drive circuit module through the grid electrode of the first TFT, and the source electrode of the first TFT is electrically connected with the first acquisition unit;
the first acquisition unit is used for acquiring a voltage signal of a current output end of the passive driving unit.
Optionally, the detection circuit module is further configured to obtain, by the first collecting unit, a third voltage signal at a current output end of the passive driving unit when the passive driving unit drives the display unit;
the detection circuit module is further configured to acquire a fourth voltage signal input by the driving circuit module to a voltage input port of the passive driving unit, and acquire a passive compensation voltage according to the third voltage signal and the fourth voltage signal;
the driving circuit module is further configured to adjust a voltage signal input to a voltage input port of the passive driving unit according to the passive compensation voltage so as to increase a driving time of the display unit by the passive driving unit.
Optionally, the detection circuit module further includes a second TFT and a second acquisition unit;
the detection circuit module is electrically connected with the current output end of the active driving unit through the drain electrode of the second TFT;
the detection circuit module is electrically connected with the driving circuit module through a grid electrode of the second TFT, and a source electrode of the second TFT is electrically connected with the second acquisition unit;
the second acquisition unit is used for acquiring a voltage signal of a current output end of the active driving unit.
Optionally, the detection circuit module is further configured to obtain, by the second collecting unit, a fifth voltage signal at the current output end of the active driving unit when the active driving unit drives the display unit;
the detection circuit module is further configured to acquire a sixth voltage signal input by the driving circuit module to a voltage input port of the active driving unit, and acquire an active compensation voltage according to the fifth voltage signal and the sixth voltage signal;
the driving circuit module is further configured to adjust a voltage signal input to a voltage input port of the active driving unit according to the active compensation voltage to increase a driving time of the display unit by the active driving unit.
Optionally, the passive driving unit includes a third TFT, a fourth TFT, a fifth TFT and a first capacitor;
the drain electrode of the third TFT is electrically connected with the gate electrode of the fourth TFT, the drain electrode of the third TFT and the gate electrode of the fourth TFT comprise first nodes, the first nodes are electrically connected with the first end of the first capacitor, and the first nodes are also electrically connected with the source electrode of the fifth TFT;
the drain electrode of the fifth TFT is electrically connected with the reference voltage end, and the grid electrode of the fifth TFT is electrically connected with the driving circuit module;
the drain electrode of the fourth TFT is electrically connected with the detection circuit module, the drain electrode of the fourth TFT is also electrically connected with the switching unit, and the source electrode of the fourth TFT is electrically connected with a power supply end;
a source electrode of the third TFT is a voltage input port of the passive driving unit, and a drain electrode of the fourth TFT is a current output end of the passive driving unit;
the grid electrode of the third TFT is electrically connected with the driving circuit module, and the second end of the first capacitor is electrically connected with the driving circuit module.
Optionally, the active driving unit includes a sixth TFT, a seventh TFT, an eighth TFT, and a second capacitor;
the drain of the sixth TFT is electrically connected to the gate of the seventh TFT, the drain of the sixth TFT and the gate of the seventh TFT include a second node, the second node is electrically connected to the first end of the second capacitor, and the second node is further electrically connected to the source of the eighth TFT;
the drain electrode of the eighth TFT is electrically connected with the reference voltage end, and the gate electrode of the eighth TFT is connected to the port at which the gate electrode of the fifth TFT is electrically connected with the driving circuit module;
the drain electrode of the seventh TFT is electrically connected to the detection circuit module, the drain electrode of the seventh TFT is also electrically connected to the switching unit, the source electrode of the seventh TFT is electrically connected to a power supply terminal, and the second end of the second capacitor is electrically connected to the power supply terminal;
a source electrode of the sixth TFT is a voltage input port of the active driving unit, and a drain electrode of the seventh TFT is a current output end of the active driving unit;
and the grid electrode of the sixth TFT is connected to a port at which the grid electrode of the third TFT is electrically connected with the driving circuit module.
Optionally, the active driving unit includes a ninth TFT, a tenth TFT, an eleventh TFT, a twelfth TFT, a thirteenth TFT, a fourteenth TFT, a fifteenth TFT, and a third capacitor;
a drain electrode of the ninth TFT is electrically connected to a source electrode of the tenth TFT, and a drain electrode of the tenth TFT is electrically connected to the power source terminal; the grid electrode of the ninth TFT is connected to a port, where the grid electrode of the third TFT is electrically connected with the driving circuit module;
the grid electrode of the tenth TFT is electrically connected with the light-emitting duration control line port of the driving circuit module;
a first end of the third capacitor is electrically connected with the power supply end, a second end of the third capacitor is electrically connected with the grid electrode of the eleventh TFT, a third node is further included between the third capacitor and the grid electrode of the eleventh TFT, the third node is electrically connected with the switching unit, and the third node is further electrically connected with the source electrode of the fourteenth TFT;
a source electrode of the eleventh TFT is electrically connected with a drain electrode of the ninth TFT, and a drain electrode of the eleventh TFT is electrically connected with a source electrode of the thirteenth TFT;
a source electrode of the twelfth TFT is electrically connected with a grid electrode of the eleventh TFT, and a drain electrode of the twelfth TFT is electrically connected with a source electrode of the thirteenth TFT; the grid electrode of the twelfth TFT is connected to a port, electrically connected with the driving circuit module, of the grid electrode of the third TFT;
the grid electrode of the thirteenth TFT is electrically connected with the light-emitting duration control line port of the driving circuit module;
a source of the fourteenth TFT is electrically connected to the third node, a drain of the fourteenth TFT is electrically connected to a source of the fifteenth TFT, and a drain of the fourteenth TFT is further electrically connected to the reference voltage terminal;
the drain electrode of the fifteenth TFT is electrically connected with the drain electrode of the thirteenth TFT, and the display unit is connected between the drain electrode of the fifteenth TFT and the drain electrode of the thirteenth TFT;
the gate of the fourteenth TFT is connected to a port at which the gate of the third TFT is electrically connected to the driving circuit module, and the gate of the fifteenth TFT is connected to a port at which the gate of the third TFT is electrically connected to the driving circuit module.
Optionally, the switching unit includes a sixteenth TFT;
the source electrode of the sixteenth TFT is electrically connected with the passive driving unit, the drain electrode of the sixteenth TFT is electrically connected with the active driving unit, and the grid electrode of the sixteenth TFT is electrically connected with the control port of the driving circuit module;
the driving circuit module is further configured to control the switching unit by inputting a control signal to the control port.
In another aspect, an embodiment of the present application provides a display, which includes at least one display circuit module according to the above aspect.
In another aspect, embodiments of the present application provide a computer device comprising at least one display as described in one aspect above.
The technical scheme provided by the embodiment of the application can at least comprise the following beneficial effects:
the application discloses display circuit module includes: the display circuit module comprises a driving circuit module, a pixel circuit module and a detection circuit module; the driving circuit module is electrically connected with a voltage input port of the pixel circuit module, the driving circuit module is also electrically connected with the detection circuit module, the detection circuit module is also electrically connected with a current output end of the pixel circuit module, and the pixel circuit module comprises a display unit; the detection circuit module is configured to acquire a first voltage signal of a current output end of the pixel circuit module when detecting that no current flows out from the current output end of the pixel circuit module after a display frame is finished; the detection circuit module is also configured to acquire a second voltage signal input by the driving circuit module to the voltage input port of the pixel circuit module, and acquire a compensation voltage according to the first voltage signal and the second voltage signal; the driving circuit module is configured to adjust a voltage signal input to the voltage input port of the pixel circuit module according to the compensation voltage to increase a driving time period of the display unit in the pixel circuit module. According to the scheme, the detection circuit module acquires a first voltage signal of a current output end of the pixel circuit module and a second voltage signal input to a voltage input port of the pixel circuit module by the driving circuit module, and acquires the compensation voltage according to the first voltage signal and the second voltage signal, and the compensation voltage is utilized to adjust the voltage signal input to the voltage input port of the pixel circuit module by the driving circuit module so as to increase the driving time of the display unit in the pixel circuit module, so that the brightness of the display unit is compensated through the driving time, the brightness difference caused by the fact that the voltage provided by the voltage input end is smaller during low-gray-scale display is avoided, and the display stability of the display circuit module during working is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic diagram of a structure related to a Micro-LED pixel circuit according to an exemplary embodiment of the present application;
fig. 2 is a schematic structural diagram of a display circuit module according to an exemplary embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a pixel circuit formed after a passive driving unit is added based on the pixel circuit of fig. 1 according to an exemplary embodiment of the present application;
fig. 4 is a schematic structural diagram of a display circuit module according to an exemplary embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of a detection circuit module according to an exemplary embodiment of the present application;
FIG. 6 is a schematic diagram of a pixel circuit of FIG. 4 according to an exemplary embodiment of the present application;
FIG. 7 is a schematic diagram of another pixel circuit of FIG. 4 according to an exemplary embodiment of the present application;
fig. 8 is a schematic structural diagram of a pixel circuit module and a detection circuit module according to an exemplary embodiment of the present application;
fig. 9 is a schematic structural diagram of a pixel circuit module and a detection circuit module according to an exemplary embodiment of the present application;
fig. 10 is a schematic structural diagram of a computer device according to an exemplary embodiment of the present application.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.
Reference herein to "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
It should be noted that the terms "first", "second", "third" and "fourth", etc. in the description and claims of the present application are used for distinguishing different objects, and are not used for describing a specific order. The terms "comprises," "comprising," and "having," and any variations thereof, of the embodiments of the present application, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
With the continuous progress of science and technology, computer equipment is used more and more frequently in daily life, and people can use the computer equipment to study, entertain, work and the like in daily life. Among them, a display has become one of indispensable hardware components in computer devices.
Currently, the variety of displays is increasing, such as Light Emitting Diode (LED) displays, Active Matrix Liquid Crystal displays (AM-LCDs), Active Matrix Organic Light-Emitting Diode (AM-OLED) displays, and the like. Active matrix liquid crystal display (AM-LCD) products are widely deployed as flat panel displays. However, AM-LCD products suffer from the major drawbacks of slow response time, poor conversion efficiency, low color saturation, etc. Therefore, active matrix organic light emitting diodes (AM-OLEDs) capable of overcoming these disadvantages are receiving attention. Compared with the AM-LCD, the AM-OLED has the advantages of self-luminous type, high contrast ratio, quick response, wide viewing angle and the like. The organic electroluminescent diode has a serious aging problem when it has a large current to achieve high brightness. Among the driving methods of the display, there are mainly the following two driving methods: passive addressing drive (PM, also called Passive addressing, Passive driving, etc.) and Active addressing drive (AM, also called Active addressing, Active driving, etc.).
On the other hand, the Micro-light emitting diode (Micro-LED) technology is developing faster and more, and is applied more and more in the display screen, and the Micro-LED can obtain higher brightness without the screen burning problem. Micro-LEDs have the advantages of self-emission type, high contrast, fast response, wide viewing angle, power saving, stability and high brightness. In order to obtain high brightness, the Micro-LED display needs to use a back plate to provide large current, and low-temperature polysilicon thin film transistors (LTPS TFTs) are also high in mobility and stability and are more suitable for being configured into the back plate of a high-brightness Micro-LED display screen.
The Micro-LED is a current-type driven light emitting device, the wavelength of which changes depending on the current density, and therefore, the Micro-LED is generally driven in an active driving mode. Referring to fig. 1, a schematic diagram of a Micro-LED pixel circuit according to an exemplary embodiment of the present application is shown. As shown in fig. 1, the pixel circuit includes 7 Thin-Film transistors (TFTs), which are respectively T1, T2, T3, T4, T5, T6, and T7, and also includes 1 capacitor C, and the connection relationship of the devices is shown in fig. 1. Wherein each TFT in fig. 1 may be a P-type TFT, which is turned on by a low voltage signal and turned off by a high voltage signal, and wherein T3 is used as a driving TFT to control the current passing through the Micro-LED. VDD is a power supply end, Vref is a reference voltage end, VSS is a common ground end, G (n) and G (n-1) are two signal ports of the driving circuit, Data is a voltage input end of the pixel circuit, EM is a light-emitting duration control line port connected to the driving circuit, and the ports are electrically connected with corresponding ports on the driving circuit.
In fig. 1, in the process of displaying the 255 gray scale (L0-L255), the driving of the Micro-LED based on the active driving method may cause uneven brightness when displaying the low gray scale (L0-L32), mainly because the voltage provided by the voltage input terminal is small during the low gray scale display, the brightness difference of the Micro-LED is not obvious when modulating within a small unit voltage range, and the phenomenon that the Micro-LED cannot normally display some gray scales within the low gray scale range exists.
In order to avoid the phenomenon that the brightness difference of the Micro-LED is not obvious during gray scale modulation due to the fact that the voltage provided by the voltage input end is small when the low gray scale is displayed, the solution is provided, the voltage input end of the pixel circuit can be compensated by the aid of the detection circuit module in a mode of adding the detection circuit module, driving time of the pixel circuit module on the display unit is prolonged, and display stability of the display circuit module during work is improved.
Referring to fig. 2, a schematic structural diagram of a display circuit module according to an exemplary embodiment of the disclosure is shown. As shown in fig. 2, the display circuit module 200 includes: the driving circuit module 201, the pixel circuit module 202 and the detecting circuit module 203.
The driving circuit module 201 is electrically connected to a voltage input port of the pixel circuit module 202, the driving circuit module 201 is further electrically connected to the detecting circuit module 203, the detecting circuit module 203 is further electrically connected to a current output port of the pixel circuit module 202, and the pixel circuit module 202 includes a display unit. Alternatively, the display unit may be a Micro-LED.
The detecting circuit module 203 is configured to obtain a first voltage signal at the current output terminal of the pixel circuit module 202 when detecting that no current flows from the current output terminal of the pixel circuit module 202 after a display frame is finished. That is to say, in the present embodiment, the added detection circuit module 203 can detect whether a current flows out from the current output terminal of the pixel circuit module 202 after a display frame is finished, and obtain the voltage at the current output terminal of the pixel circuit module 202 when no current flows out from the current output terminal of the pixel circuit module 202.
The detection circuit module 203 is further configured to obtain a second voltage signal input by the driving circuit module 201 to the voltage input port of the pixel circuit module 202, and obtain the compensation voltage according to the first voltage signal and the second voltage signal. Optionally, the detection circuit module 203 obtains the compensation voltage according to the obtained first voltage signal and the obtained second voltage signal. For example, the first voltage signal is V1, the second voltage signal is V2, and the obtained compensation voltage may be V Compensation ＝(V1-V2)。
The driving circuit module 201 is configured to adjust a voltage signal input to the voltage input port of the pixel circuit module 202 according to the compensation voltage, so as to increase a driving time of the display unit in the pixel circuit module 202. Optionally, the driving circuit module 201 may obtain the compensation voltage obtained by the detection circuit module 203, and adjust the voltage signal input to the voltage input port of the pixel circuit module 202 according to the compensation voltage, for example, adjust the voltage signal input to the voltage input port of the pixel circuit module 202 to a voltage signal corresponding to the compensation voltage.
To sum up, the display circuit module of this application includes: the display circuit module comprises a driving circuit module, a pixel circuit module and a detection circuit module; the driving circuit module is electrically connected with a voltage input port of the pixel circuit module, the driving circuit module is also electrically connected with the detection circuit module, the detection circuit module is also electrically connected with a current output end of the pixel circuit module, and the pixel circuit module comprises a display unit; the detection circuit module is configured to acquire a first voltage signal of a current output end of the pixel circuit module when detecting that no current flows out from the current output end of the pixel circuit module after a display frame is finished; the detection circuit module is also configured to acquire a second voltage signal input by the driving circuit module to the voltage input port of the pixel circuit module, and acquire a compensation voltage according to the first voltage signal and the second voltage signal; the driving circuit module is configured to adjust a voltage signal input to the voltage input port of the pixel circuit module according to the compensation voltage to increase a driving time period of the display unit in the pixel circuit module. According to the scheme, the detection circuit module is utilized, a first voltage signal of a current output end of the pixel circuit module and a second voltage signal input to a voltage input port of the pixel circuit module by the driving circuit module are obtained, the compensation voltage is obtained according to the first voltage signal and the second voltage signal, the voltage signal input to the voltage input port of the pixel circuit module by the driving circuit module is adjusted by the compensation voltage, the driving time of the display unit in the pixel circuit module is prolonged, the brightness of the display unit is compensated through the driving time, the brightness difference caused by the fact that the voltage provided by the voltage input end is small when the low gray scale display is carried out is avoided, and the display stability of the display circuit module during working is improved.
In order to increase the driving manner of the display unit and improve the flexibility of driving the display unit, the present application also modifies the above-mentioned fig. 1. Referring to fig. 3, a schematic structural diagram of a pixel circuit formed after a passive driving unit is added based on the pixel circuit of fig. 1 according to an exemplary embodiment of the present application is shown. As shown in fig. 3, the pixel circuit 300 includes a passive driving unit 301, an active driving unit 302, and a switching unit 303, that is, the passive driving unit 301 and the switching unit 303 are added to fig. 1, the passive driving unit includes 3 TFTs and a capacitor C2, which are respectively T9, T10, and T11, the switching unit 303 includes 1 TFT, which is T8, and the connection relationship of the respective devices is shown in fig. 3. In fig. 3, the pixel circuit includes not only an active driving unit but also a passive driving unit, and when controlling the display unit to display, the pixel circuit can be driven by two driving methods separately or simultaneously.
In the circuit shown in fig. 3, the current time length output by the Micro-LED is adjusted by using the T8 and the control signal, the passive driving unit 301 may be driven based on a Pulse Width Modulation (PWM) method, when the T8 is turned on and the node g between the T10 and the T9 is coupled to a voltage below the turn-on voltage by the sweep signal, the T9 is also turned on, and at this time, the T3 device does not have current flowing through it, so the Micro-LED does not emit light at this time, and thus the current time length output by the Micro-LED can be controlled. The signals of the ports in fig. 3 can be provided by the driving chip.
In a possible implementation manner, a pixel circuit module in the display circuit module provided by the present application is similar to the pixel circuit shown in fig. 3, and the pixel circuit module includes not only an active driving unit but also a passive driving unit, and the driving circuit module can control the pixel circuit module to drive the display unit according to the active driving unit, can also control the pixel circuit module to drive the display unit according to the passive driving unit, and can also control the pixel circuit module to drive the display unit according to a combination manner of the active driving unit and the passive driving unit.
Please refer to fig. 4, which illustrates a schematic structural diagram of a display circuit module according to an exemplary embodiment of the present disclosure. As shown in fig. 4, the display circuit module 400 includes: a driving circuit module 401, a pixel circuit module 402 and a detecting circuit module 403.
The driving circuit module 401 is electrically connected to a voltage input port of the pixel circuit module 402, the driving circuit module 401 is further electrically connected to the detecting circuit module 403, the detecting circuit module 403 is further electrically connected to a current output port of the pixel circuit module 402, and the pixel circuit module 402 includes a display unit. Alternatively, the display unit may be a Micro-LED.
Optionally, the pixel circuit module 402 includes an active driving unit 402a, a switching unit 402b and a passive driving unit 402 c; the active driving unit 402a is electrically connected to the switching unit 402b, the switching unit 402b is further electrically connected to the passive driving unit 402c, and the switching unit 402b is further electrically connected to the driving circuit module 401. The driving circuit module 401 is further configured to cause the pixel circuit module 402 to drive the display unit through the active driving unit 402a and/or the passive driving unit 402c by controlling the switching unit 402 b. For example, the switching unit 402b is electrically connected to a control port of the driving circuit module 401, and the driving circuit module 401 transmits a control signal through the control port, so that the switching unit 402b controls the active driving unit 402a and/or the passive driving unit 402c in the pixel circuit module 402 to drive the display unit.
Optionally, the active driving unit 402a is configured to drive the display unit in an active addressing driving AM manner; the passive driving unit 402c is configured to drive the display unit in a Pulse Width Modulation (PWM) manner. That is, in fig. 4, the active driving unit 402a drives the display unit in the pixel circuit block in the AM manner, and the passive driving unit 402c drives the display unit in the pixel circuit block in the PWM manner.
In a possible implementation manner, the detection circuit module 403 is implemented based on the first TFT and the first acquisition unit, please refer to fig. 5, which shows a schematic structural diagram of a detection circuit module according to an exemplary embodiment of the present application. As shown in fig. 5, the detection circuit module includes a first TFT 501 and a first collecting unit 502. The first collecting unit 502 is composed of a capacitor 502a and a voltage detecting unit 502 b. The connection relationship between the first TFT 501 and the first pickup unit 502 is shown in fig. 5.
In one possible implementation manner, the detection circuit module 403 may adopt the design shown in fig. 5 and is electrically connected to the passive driving unit. Referring to fig. 6, a schematic diagram of a pixel circuit of fig. 4 according to an exemplary embodiment of the present application is shown. As shown in fig. 6, the detection circuit module 601 is electrically connected to the passive driving unit 602.
That is, the detection circuit module 601 includes a first TFT and a first collecting unit; the detection circuit module 601 is electrically connected with the current output end of the passive driving unit through the drain electrode of the first TFT; the detection circuit module 601 is electrically connected with the driving circuit module through a grid electrode of the first TFT, and a source electrode of the first TFT is electrically connected with the first acquisition unit; the first acquisition unit is used for acquiring a voltage signal of a current output end of the passive driving unit.
Optionally, the detection circuit module 601 is further configured to obtain, by the first collecting unit, a third voltage signal at the current output end of the passive driving unit 602 when the passive driving unit 602 drives the display unit; the detection circuit module 601 is further configured to obtain a fourth voltage signal input by the driving circuit module to the voltage input port of the passive driving unit 602, and obtain a passive compensation voltage according to the third voltage signal and the fourth voltage signal; the driving circuit module is further configured to adjust a voltage signal input to a voltage input port of the passive driving unit 602 according to the passive compensation voltage, so as to increase a driving time of the passive driving unit 602 for the display unit.
That is to say, the detection circuit module 601 and the passive driving unit 602 may be electrically connected, the detection circuit module 601 obtains a third voltage signal at the current output end of the passive driving unit 602 and a fourth voltage signal input by the driving circuit module to the voltage input port of the passive driving unit 602, and obtains a passive compensation voltage that the driving circuit module needs to compensate the passive driving unit 602 according to the third voltage signal and the fourth voltage signal; the voltage signal input by the driving circuit module to the voltage input port of the passive driving unit 602 is adjusted to increase the driving time of the passive driving unit 602 for the display unit.
In one possible implementation manner, the detecting circuit module 403 may adopt the design shown in fig. 5 and is electrically connected to the active driving unit. Similar to fig. 6, the detection circuit module is electrically connected to the active driving unit instead. That is to say, the detection circuit module may also be electrically connected to the active driving unit, the detection circuit module obtains a fifth voltage signal at the current output end of the active driving unit and a sixth voltage signal input by the driving circuit module to the voltage input port of the active driving unit, and obtains an active compensation voltage that the driving circuit module needs to compensate the active driving unit according to the fifth voltage signal and the sixth voltage signal; and adjusting the voltage signal input by the driving circuit module to the voltage input port of the active driving unit so as to increase the driving time of the active driving unit to the display unit.
In a possible implementation manner, the detection circuit module shown in fig. 5 further includes a second TFT and a second collecting unit; in the scheme, the detection circuit module is electrically connected with the current output end of the active driving unit through the drain electrode of the second TFT; the detection circuit module is electrically connected with the driving circuit module through a grid electrode of the second TFT, and a source electrode of the second TFT is electrically connected with the second acquisition unit; the second acquisition unit is used for acquiring a voltage signal of the current output end of the active driving unit. Referring to fig. 7, a schematic diagram of another pixel circuit of fig. 4 according to an exemplary embodiment of the present application is shown. As shown in fig. 7, the passive driving unit 701 is electrically connected to the first TFT and the first collecting unit 703a in the detection circuit module 703, and the active driving unit 702 is electrically connected to the second TFT and the second collecting unit 703b in the detection circuit module 703.
Optionally, in the foregoing fig. 7, the detection circuit module is further configured to obtain, by the second collecting unit, a fifth voltage signal at the current output end of the active driving unit when the active driving unit drives the display unit; the detection circuit module is also configured to acquire a sixth voltage signal input by the driving circuit module to the voltage input port of the active driving unit, and acquire an active compensation voltage according to the fifth voltage signal and the sixth voltage signal; the driving circuit module is also configured to adjust a voltage signal input to a voltage input port of the active driving unit according to the active compensation voltage to increase a driving time of the display unit by the active driving unit.
That is to say, in the above fig. 7, the present solution may be electrically connected to the passive driving unit and the active driving unit through the detection circuit module, the detection circuit module obtains a third voltage signal at the current output end of the passive driving unit and a fourth voltage signal input by the driving circuit module to the voltage input port of the passive driving unit, and obtains a passive compensation voltage that the driving circuit module needs to compensate the passive driving unit according to the third voltage signal and the fourth voltage signal; and adjusting the voltage signal input by the driving circuit module to the voltage input port of the passive driving unit so as to increase the driving time of the passive driving unit to the display unit. A fifth voltage signal of a current output end of the active driving unit and a sixth voltage signal input to a voltage input port of the active driving unit by the driving circuit module are obtained through the detection circuit module, and active compensation voltage required by the driving circuit module to compensate the active driving unit is obtained according to the fifth voltage signal and the sixth voltage signal; and adjusting the voltage signal input by the driving circuit module to the voltage input port of the active driving unit so as to increase the driving time of the active driving unit to the display unit. And meanwhile, voltage signals input to respective voltage input ports of the active driving unit and the active driving unit by the driving circuit module are regulated.
Taking the pixel circuit shown in fig. 3 as an example, please refer to fig. 8, which shows a schematic structural diagram of a pixel circuit module and a detection circuit module according to an exemplary embodiment of the present application. As shown in fig. 8, the pixel circuit module 800 includes an active driving unit 801, a switching unit 802 and a passive driving unit 803; the passive driving unit 803 of the pixel circuit module 801 is electrically connected to the detecting circuit module 804.
Wherein, the passive driving unit 803 includes a third TFT 803a, a fourth TFT 803b, a fifth TFT 803c and a first capacitor 803 d; the drain of the third TFT 803a and the gate of the fourth TFT 803b are electrically connected, and the drain of the third TFT 803a and the gate of the fourth TFT 803b include a first node g1, a first node g1 is electrically connected to the first end of the first capacitor 803d, and a first node g1 is also electrically connected to the source of the fifth TFT 803 c; the drain of the fifth TFT 803c is electrically connected to the active driving unit 801, and the gate of the fifth TFT 803c is electrically connected to the driving circuit module; the drain of the fourth TFT 803b is electrically connected to the detection circuit module 804, the drain of the fourth TFT 803b is also electrically connected to the switching unit 802, and the source of the fourth TFT 803b is electrically connected to the power source terminal VDD; the source of the third TFT 803a is a voltage input port of the passive driving unit 803, and the drain of the fourth TFT 803b is a current output terminal of the passive driving unit 803; the gate of the third TFT 803a is electrically connected to the driving circuit module, and the second terminal of the first capacitor 803d is electrically connected to the driving circuit module.
Optionally, as shown in fig. 8, the gate of the third TFT 803a is electrically connected to the first voltage output port Data1 of the driving circuit module, and the second end of the first capacitor 803d is electrically connected to the Sweep port Sweep of the driving circuit module. Optionally, in the working process of the circuit shown in fig. 8, before a frame is finished, the driving circuit module may close the signal provided by the emission duration Control line port EM to the active driving unit, close the signal provided by the Control port Control to the switching unit, provide a signal through the Sweep port Sweep to maintain a fixed level, and open the G _ det port of the first TFT provided to the detection circuit module, at this time, the detection current flows out through the drain of the fourth TFT 803b, the detection circuit module obtains the third voltage signal at the current output end of the passive driving unit by measuring the voltage at the V _ det port of the first TFT, and calculates the passive compensation voltage by combining the fourth voltage signal provided by the first voltage output port Data1 of the driving circuit module, and adjusts the voltage signal provided by the first voltage output port Data1 of the driving circuit module to the passive compensation voltage, so as to increase the driving time of the pixel circuit module to the display unit.
Optionally, the active driving unit 801 includes a sixth TFT801 a, a seventh TFT801b, an eighth TFT801c and a second capacitor 801 d; the drain of the sixth TFT801 a is electrically connected to the gate of the seventh TFT801b, the drain of the sixth TFT801 a and the gate of the seventh TFT801b include a second node g2, the second node g2 is electrically connected to the first end of the second capacitor 801d, and the second node g2 is further electrically connected to the source of the eighth TFT801 c; the drain of the eighth TFT801c is electrically connected to the drain of the fifth TFT 803c, and the gate of the eighth TFT801c is connected to the port where the gate of the fifth TFT is electrically connected to the driving circuit module; the drain of the seventh TFT801b is electrically connected to the detection circuit module, the drain of the seventh TFT801b is further electrically connected to the switching unit, the source of the seventh TFT801b is electrically connected to a power source terminal, and the second terminal of the second capacitor 801d is electrically connected to the power source terminal VDD; the source of the sixth TFT801 a is the voltage input port of the active driving unit 801, and the drain of the seventh TFT801b is the current output port of the active driving unit 801; the gate of the sixth TFT801 a is connected to the port at which the gate of the third TFT is electrically connected to the driving circuit module.
Optionally, as shown in fig. 8, the gate of the sixth TFT801 a is electrically connected to the second voltage output port Data2 of the driving circuit module.
Optionally, in the circuit shown in fig. 8, the detection circuit module may be electrically connected to the passive driving unit through the first TFT, and electrically connected to the active driving unit through the second TFT, and the connection manner may refer to the manner in fig. 8, which is not described herein again. Wherein, the driving circuit module may close the signal provided by the light emitting duration Control line port EM to the active driving unit before the end of a frame, the driving circuit module also closes the signal provided by the Control port Control to the switching unit, provides a signal through the Sweep port Sweep to maintain a fixed level, and opens the G _ det1 port provided to the first TFT and the G _ det2 port of the second TFT in the detection circuit module, at this time, the detection current of the passive driving unit flows out through the drain of the fourth TFT 803b, the detection current of the active driving unit flows out through the drain of the seventh TFT801b, the detection circuit module obtains the third voltage signal of the current output terminal of the passive driving unit by measuring the voltage of the V _ det1 port of the first TFT, and combines the fourth voltage signal provided by the first voltage Data port 1 of the driving circuit module, and calculating a passive compensation voltage, and adjusting a voltage signal provided by a first voltage output port Data1 of the driving circuit module to the passive compensation voltage so as to increase the driving time of the pixel circuit module on the display unit. The detection circuit module measures the voltage of the V _ det2 port of the second TFT, so that a fifth voltage signal of the current output end of the active driving unit is obtained, the active compensation voltage is calculated by combining a sixth voltage signal provided by the second voltage output port Data2 of the driving circuit module, and the voltage signal provided by the second voltage output port Data2 of the driving circuit module is adjusted to be the active compensation voltage, so that the driving time of the pixel circuit module on the display unit is prolonged.
For example, when the third voltage signal detected by the detection circuit module is V 1 The fourth voltage signal obtained is V g1 When the passive compensation voltage is (V) g1 -V 1 ) When the fifth voltage signal detected by the detection circuit module is V 2 The sixth voltage signal obtained is V g2 When the active compensation voltage is (V) g2 -V 2 ) And feeding back the passive compensation voltage and the active compensation voltage to the driving circuit module so as to perform voltage compensation.
In a possible implementation manner, please refer to fig. 9, which illustrates a schematic structural diagram of a pixel circuit module and a detection circuit module according to an exemplary embodiment of the present application. As shown in fig. 9, the pixel circuit module 900 includes an active driving unit 901, a switching unit 902 and a passive driving unit 903; the passive driving unit 903 in the pixel circuit module 901 is electrically connected to the detecting circuit module 904. The structure of the passive driving unit 903 is the same as that of the passive driving unit 803 in fig. 8, and is not described here again.
The active driving unit 901 includes a ninth TFT 901a, a tenth TFT 901b, an eleventh TFT 901c, a twelfth TFT 901d, a thirteenth TFT 901e, a fourteenth TFT 901f, a fifteenth TFT 901g, and a third capacitor 901 h; a drain of the ninth TFT 901a is electrically connected to a source of the tenth TFT 901b, and a drain of the tenth TFT 901b is electrically connected to a power source terminal; the gate of the ninth TFT 901a is connected to a port at which the gate of the third TFT is electrically connected to the driving circuit module; a gate of the tenth TFT 901b is electrically connected to the light emitting duration control line port of the driving circuit module; a first end of the third capacitor 901h is electrically connected to a power supply terminal, a second end of the third capacitor 901h is electrically connected to a gate of the eleventh TFT 901b, a third node is further included between the third capacitor 901h and the gate of the eleventh TFT 901b, the third node is electrically connected to the switching unit, and the third node is further electrically connected to a source of the fourteenth TFT 901 f; a source of the eleventh TFT 901b is electrically connected to a drain of the ninth TFT 901a, and a drain of the eleventh TFT 901b is electrically connected to a source of the thirteenth TFT 901 e; a source of the twelfth TFT 901b is electrically connected to a gate of the eleventh TFT 901b, and a drain of the twelfth TFT 901b is electrically connected to a source of the thirteenth TFT 901 e; the gate of the twelfth TFT 901b is connected to a port at which the gate of the third TFT is electrically connected to the driving circuit module; the gate of the thirteenth TFT 901e is electrically connected to the light-emitting duration control line port of the driving circuit module; a source of the fourteenth TFT 901f is electrically connected to the third node, a drain of the fourteenth TFT 901f is electrically connected to a source of the fifteenth TFT 901g, and a drain of the fourteenth TFT 901f is further electrically connected to the reference voltage terminal; the drain of the fifteenth TFT 901g is electrically connected to the drain of the thirteenth TFT 901e, and the display unit is connected between the drain of the fifteenth TFT 901g and the drain of the thirteenth TFT 901 e; the gate of the fourteenth TFT 901f is connected to the port at which the gate of the third TFT is electrically connected to the driving circuit module, and the gate of the fifteenth TFT 901g is connected to the port at which the gate of the third TFT is electrically connected to the driving circuit module.
Optionally, the switching unit includes a sixteenth TFT; the source electrode of the sixteenth TFT is electrically connected with the passive driving unit, the drain electrode of the sixteenth TFT is electrically connected with the active driving unit, and the grid electrode of the sixteenth TFT is electrically connected with the control port of the driving circuit module; the driving circuit module is also configured to control the switching unit by inputting a control signal to the control port. In fig. 8, a source of the sixteenth TFT may be electrically connected to a drain of the fourth TFT in the passive driving unit, and a drain of the sixteenth TFT may be electrically connected to a source of the eighth TFT in the active driving unit. In fig. 9, a source of the sixteenth TFT may be electrically connected to a drain of the fourth TFT in the passive driving unit, and a drain of the sixteenth TFT may be electrically connected to a source of the fourteenth TFT in the active driving unit.
As shown in the above solution, the detecting circuit module 403 is configured to obtain the first voltage signal at the current output terminal of the pixel circuit module 404 when detecting that no current flows from the current output terminal of the pixel circuit module 404 after a display frame is finished. That is to say, in the present embodiment, the added detection circuit module 403 can detect whether a current flows out from the current output terminal of the pixel circuit module 404 after a display frame is finished, and obtain the voltage at the current output terminal of the pixel circuit module 404 when no current flows out from the current output terminal of the pixel circuit module 404.
The detection circuit module 403 is further configured to obtain a second voltage signal input by the driving circuit module 401 to the voltage input port of the pixel circuit module 404, and obtain the compensation voltage according to the first voltage signal and the second voltage signal. Optionally, the detection circuit module 403 obtains the compensation voltage according to the obtained first voltage signal and the obtained second voltage signal.
The driving circuit module 401 is configured to adjust a voltage signal input to the voltage input port of the pixel circuit module 404 according to the compensation voltage, so as to increase a driving time period of the display unit in the pixel circuit module 404. Optionally, the driving circuit module 401 may obtain the compensation voltage obtained by the detection circuit module 403, and adjust the voltage signal input to the voltage input port of the pixel circuit module 404 according to the compensation voltage, for example, adjust the voltage signal input to the voltage input port of the pixel circuit module 404 to a voltage signal corresponding to the compensation voltage.
To sum up, the display circuit module of this application includes: the display circuit module comprises a driving circuit module, a pixel circuit module and a detection circuit module; the driving circuit module is electrically connected with a voltage input port of the pixel circuit module, the driving circuit module is also electrically connected with the detection circuit module, the detection circuit module is also electrically connected with a current output end of the pixel circuit module, and the pixel circuit module comprises a display unit; the detection circuit module is configured to acquire a first voltage signal of a current output end of the pixel circuit module when detecting that no current flows out from the current output end of the pixel circuit module after a display frame is finished; the detection circuit module is also configured to acquire a second voltage signal input by the driving circuit module to the voltage input port of the pixel circuit module, and acquire a compensation voltage according to the first voltage signal and the second voltage signal; the driving circuit module is configured to adjust a voltage signal input to the voltage input port of the pixel circuit module according to the compensation voltage to increase a driving time period of the display unit in the pixel circuit module. According to the scheme, the detection circuit module acquires a first voltage signal of a current output end of the pixel circuit module and a second voltage signal input to a voltage input port of the pixel circuit module by the driving circuit module, and acquires the compensation voltage according to the first voltage signal and the second voltage signal, and the compensation voltage is utilized to adjust the voltage signal input to the voltage input port of the pixel circuit module by the driving circuit module so as to increase the driving time of the display unit in the pixel circuit module, so that the brightness of the display unit is compensated through the driving time, the brightness difference caused by the fact that the voltage provided by the voltage input end is smaller during low-gray-scale display is avoided, and the display stability of the display circuit module during working is improved.
Optionally, the present application further provides a display, where the display may include at least one display circuit module as shown in the embodiment of fig. 2 or fig. 4.
Fig. 10 is a schematic structural diagram of a computer device according to an exemplary embodiment of the present application. As shown in fig. 10, the computer apparatus 1000 includes a Central Processing Unit (CPU) 1001, a system Memory 1004 including a Random Access Memory (RAM) 1002 and a Read Only Memory (ROM) 1003, and a system bus 1005 connecting the system Memory 1004 and the Central Processing Unit 1001. The computer device 1000 also includes a basic transmission/Output System (I/O System) 1006 for facilitating information transfer between various elements within the computer, and a mass storage device 1007 for storing an operating System 1012, application programs 1013, and other program modules 1014.
The basic transmission/output system 1006 includes a display 1006 for displaying information and a transmission device 1009 such as a mouse, keyboard, etc. for transmitting information by a user. Wherein the display 1006 and the transmission device 1009 are connected to the central processing unit 1001 through a transmission output controller 1010 connected to a system bus 1005. The basic transmit/output system 1006 may also include a transmit output controller 1010 for receiving and processing transmissions from a number of other devices, such as a keyboard, mouse, or electronic stylus. Similarly, transport output controller 1010 also provides output to a display screen, a printer, or other type of output device.
The mass storage device 1007 is connected to the central processing unit 1001 through a mass storage controller (not shown) connected to the system bus 1005. The mass storage device 1007 and its associated computer-readable media provide non-volatile storage for the computer device 1000. That is, the mass storage device 1007 may include a computer-readable medium (not shown) such as a hard disk or a CD-ROM (Compact disk Read-Only Memory) drive.
The computer readable media may include computer storage media and communication media. Computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. Computer storage media includes RAM, ROM, EPROM (Erasable Programmable Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), flash Memory or other solid state Memory technology, CD-ROM, DVD (Digital Video Disc) or other optical, magnetic, tape, magnetic disk storage or other magnetic storage devices. Of course, those skilled in the art will appreciate that the computer storage media is not limited to the foregoing. The system memory 1004 and mass storage device 1007 described above may be collectively referred to as memory.
The computer device 1000 may be connected to the internet or other network devices through a network interface unit 1011 connected to the system bus 1005. The memory also includes one or more programs, which are stored in the memory.
Optionally, the display 1006 in the computer device provided in the present application may include at least one display circuit module as shown in the embodiment of fig. 2 or fig. 4.
Optionally, in this application, the driving circuit in the display circuit module may be disposed on the flexible printed circuit board FPC and combined with the PCB, and each pixel circuit is in the Micro LED lamp panel, and the display process may refer to the working principle in fig. 2 or fig. 4, which is not repeated here.
The display circuit module, the display and the computer device disclosed in the embodiments of the present application are introduced by way of example, and the principle and the implementation of the present application are explained in this document by applying an example, and the description of the above embodiments is only used to help understand the method and the core idea of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims (13)

1. The display circuit module is characterized by comprising a driving circuit module, a pixel circuit module and a detection circuit module;
the driving circuit module is electrically connected with a voltage input port of the pixel circuit module, the driving circuit module is also electrically connected with the detection circuit module, the detection circuit module is also electrically connected with a current output end of the pixel circuit module, and the pixel circuit module comprises a display unit;
the detection circuit module is configured to obtain a first voltage signal of a current output end of the pixel circuit module when detecting that no current flows out from the current output end of the pixel circuit module after a display frame is finished;
the detection circuit module is further configured to acquire a second voltage signal input by the driving circuit module to a voltage input port of the pixel circuit module, and acquire a compensation voltage according to the first voltage signal and the second voltage signal;
the driving circuit module is configured to adjust a voltage signal input to a voltage input port of the pixel circuit module according to the compensation voltage to increase a driving time period of the display unit in the pixel circuit module.
2. The display circuit module of claim 1, wherein the pixel circuit module comprises an active driving unit, a switching unit and a passive driving unit;
the active driving unit is electrically connected with the switching unit, the switching unit is also electrically connected with the passive driving unit, and the switching unit is also electrically connected with the driving circuit module;
the driving circuit module is further configured to control the switching unit so that the pixel circuit module drives the display unit through the active driving unit and/or the passive driving unit.
3. The display circuit module of claim 2, wherein the active driving unit is configured to drive the display unit in an active addressing drive (AM) manner;
the passive driving unit is configured to drive the display unit in a Pulse Width Modulation (PWM) manner.
4. The display circuit module of claim 2, wherein the detection circuit module comprises a first TFT and a first collecting unit;
the detection circuit module is electrically connected with the current output end of the passive driving unit through the drain electrode of the first TFT;
the detection circuit module is electrically connected with the drive circuit module through the grid electrode of the first TFT, and the source electrode of the first TFT is electrically connected with the first acquisition unit;
the first acquisition unit is used for acquiring a voltage signal of a current output end of the passive driving unit.
5. The display circuit module of claim 4, wherein the detection circuit module is further configured to obtain a third voltage signal at the current output terminal of the passive driving unit through the first collecting unit when the passive driving unit drives the display unit;
the detection circuit module is further configured to acquire a fourth voltage signal input by the driving circuit module to a voltage input port of the passive driving unit, and acquire a passive compensation voltage according to the third voltage signal and the fourth voltage signal;
the driving circuit module is further configured to adjust a voltage signal input to a voltage input port of the passive driving unit according to the passive compensation voltage so as to increase a driving time of the display unit by the passive driving unit.
6. The display circuit module of claim 4, wherein the detection circuit module further comprises a second TFT and a second collection unit;
the detection circuit module is electrically connected with the current output end of the active driving unit through the drain electrode of the second TFT;
the detection circuit module is electrically connected with the driving circuit module through a grid electrode of the second TFT, and a source electrode of the second TFT is electrically connected with the second acquisition unit;
the second acquisition unit is used for acquiring a voltage signal of a current output end of the active driving unit.
7. The display circuit module of claim 6, wherein the detection circuit module is further configured to obtain a fifth voltage signal at the current output terminal of the active driving unit through the second collecting unit when the active driving unit drives the display unit;
the detection circuit module is further configured to acquire a sixth voltage signal input by the driving circuit module to a voltage input port of the active driving unit, and acquire an active compensation voltage according to the fifth voltage signal and the sixth voltage signal;
the driving circuit module is further configured to adjust a voltage signal input to a voltage input port of the active driving unit according to the active compensation voltage to increase a driving time of the display unit by the active driving unit.
8. The display circuit module of any one of claims 2 to 7, wherein the passive driving unit comprises a third TFT, a fourth TFT, a fifth TFT and a first capacitor;
the drain electrode of the third TFT is electrically connected with the gate electrode of the fourth TFT, the drain electrode of the third TFT and the gate electrode of the fourth TFT comprise first nodes, the first nodes are electrically connected with the first end of the first capacitor, and the first nodes are also electrically connected with the source electrode of the fifth TFT;
the drain electrode of the fifth TFT is electrically connected with the active driving unit, and the grid electrode of the fifth TFT is electrically connected with the driving circuit module;
the drain electrode of the fourth TFT is electrically connected with the detection circuit module, the drain electrode of the fourth TFT is also electrically connected with the switching unit, and the source electrode of the fourth TFT is electrically connected with a power supply end;
a source electrode of the third TFT is a voltage input port of the passive driving unit, and a drain electrode of the fourth TFT is a current output end of the passive driving unit;
the grid electrode of the third TFT is electrically connected with the driving circuit module, and the second end of the first capacitor is electrically connected with the driving circuit module.
9. The display circuit module of claim 8, wherein the active driving unit comprises a sixth TFT, a seventh TFT, an eighth TFT and a second capacitor;
the drain of the sixth TFT is electrically connected to the gate of the seventh TFT, the drain of the sixth TFT and the gate of the seventh TFT include a second node, the second node is electrically connected to the first end of the second capacitor, and the second node is further electrically connected to the source of the eighth TFT;
the drain electrode of the eighth TFT is electrically connected with the drain electrode of the fifth TFT, and the gate electrode of the eighth TFT is connected to a port at which the gate electrode of the fifth TFT is electrically connected with the driving circuit module;
the drain electrode of the seventh TFT is electrically connected to the detection circuit module, the drain electrode of the seventh TFT is also electrically connected to the switching unit, the source electrode of the seventh TFT is electrically connected to a power supply terminal, and the second end of the second capacitor is electrically connected to the power supply terminal;
a source electrode of the sixth TFT is a voltage input port of the active driving unit, and a drain electrode of the seventh TFT is a current output end of the active driving unit;
and the grid electrode of the sixth TFT is connected to a port at which the grid electrode of the third TFT is electrically connected with the driving circuit module.
10. The display circuit module of claim 8, wherein the active driving unit comprises a ninth TFT, a tenth TFT, an eleventh TFT, a twelfth TFT, a thirteenth TFT, a fourteenth TFT, a fifteenth TFT and a third capacitor;
a drain electrode of the ninth TFT is electrically connected to a source electrode of the tenth TFT, and a drain electrode of the tenth TFT is electrically connected to the power source terminal; the grid electrode of the ninth TFT is connected to a port at which the grid electrode of the third TFT is electrically connected with the driving circuit module;
the grid electrode of the tenth TFT is electrically connected with the light-emitting duration control line port of the driving circuit module;
a first end of the third capacitor is electrically connected with the power supply end, a second end of the third capacitor is electrically connected with the grid electrode of the eleventh TFT, a third node is further included between the third capacitor and the grid electrode of the eleventh TFT, the third node is electrically connected with the switching unit, and the third node is further electrically connected with the source electrode of the fourteenth TFT;
a source electrode of the eleventh TFT is electrically connected with a drain electrode of the ninth TFT, and a drain electrode of the eleventh TFT is electrically connected with a source electrode of the thirteenth TFT;
a source electrode of the twelfth TFT is electrically connected with a grid electrode of the eleventh TFT, and a drain electrode of the twelfth TFT is electrically connected with a source electrode of the thirteenth TFT; the grid electrode of the twelfth TFT is connected to a port, electrically connected with the driving circuit module, of the grid electrode of the third TFT;
the grid electrode of the thirteenth TFT is electrically connected with the light-emitting duration control line port of the driving circuit module;
a source of the fourteenth TFT is electrically connected to the third node, a drain of the fourteenth TFT is electrically connected to a source of the fifteenth TFT, and a drain of the fourteenth TFT is further electrically connected to the reference voltage terminal;
the drain electrode of the fifteenth TFT is electrically connected with the drain electrode of the thirteenth TFT, and the display unit is connected between the drain electrode of the fifteenth TFT and the drain electrode of the thirteenth TFT;
the gate of the fourteenth TFT is connected to a port at which the gate of the third TFT is electrically connected to the driving circuit module, and the gate of the fifteenth TFT is connected to a port at which the gate of the third TFT is electrically connected to the driving circuit module.
11. The display circuit module according to any one of claims 2 to 7, wherein the switching unit comprises a sixteenth TFT;
the source electrode of the sixteenth TFT is electrically connected with the passive driving unit, the drain electrode of the sixteenth TFT is electrically connected with the active driving unit, and the grid electrode of the sixteenth TFT is electrically connected with the control port of the driving circuit module;
the driving circuit module is further configured to control the switching unit by inputting a control signal to the control port.
12. A display, characterized in that the display comprises at least one display circuit module according to any one of claims 1 to 11.
13. Computer device, characterized in that it comprises at least one display according to any of the claims 12.
CN202210772533.6A 2022-06-30 2022-06-30 Display circuit module, display and computer equipment Active CN114974104B (en)

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WO2024001055A1 (en) * 2022-06-30 2024-01-04 上海闻泰电子科技有限公司 Display circuit module, display, and computer device

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