CN112927647B - Display device and driving method thereof - Google Patents

Display device and driving method thereof Download PDF

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Publication number
CN112927647B
CN112927647B CN202110141366.0A CN202110141366A CN112927647B CN 112927647 B CN112927647 B CN 112927647B CN 202110141366 A CN202110141366 A CN 202110141366A CN 112927647 B CN112927647 B CN 112927647B
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display device
display
time
actual
driving
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CN112927647A (en
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王增
王振岭
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Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
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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
    • 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
    • G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
    • 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
    • G09G2320/04—Maintaining the quality of display appearance
    • G09G2320/043—Preventing or counteracting the effects of ageing
    • G09G2320/046—Dealing with screen burn-in prevention or compensation of the effects thereof
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management

Abstract

The embodiment of the application provides a display device and a driving method thereof, wherein the driving method of the display device determines actual driving voltage data and actual display time of the display device according to a gray scale to be displayed, display driving time and detection time of the display device and a preset corresponding relation, and then drives the display device in the actual display time by using the actual driving voltage data of the display device; the embodiment of the application considers that the display device needs to detect the mobility of the driving transistor, so that the actual driving voltage data and the actual display time of the display device are obtained, the actual driving voltage data are larger than the voltage data to be driven, larger driving voltage data are input in shorter display time, the driving voltage data of the display device are compensated, and the brightness of the display device is improved.

Description

Display device and driving method thereof
Technical Field
The present disclosure relates to display technologies, and particularly to a display device and a driving method thereof.
Background
In order to achieve different requirements, various display devices including a mini LED (mini Light Emitting Diode) display device, a micro LED (micro Light Emitting Diode) display device, and an OLED (Organic Light-Emitting Diode) display device may be designed in the conventional display device, in the display device, a thin film transistor is required to be used for driving control, specifically, in a driving circuit of the display device, a driving transistor may exist to control a driving current, so as to control display luminance of the display device, and in a using process of the driving transistor, mobility of the driving transistor needs to be detected during displaying due to aging of the driving transistor, so as to compensate driving voltage of the display device correspondingly, but in an actual process, it is found that when the mobility of the driving transistor is tested, luminance of the display device may be reduced, so that a display effect is poor.
Therefore, the conventional display device has the technical problem that the brightness of the display device is reduced when the mobility of the driving transistor is tested.
Disclosure of Invention
The embodiment of the application provides a display device and a driving method thereof, which are used for solving the technical problem that the brightness of the display device is reduced when the mobility of a driving transistor is tested in the conventional display device.
An embodiment of the present application provides a display device driving method, including:
acquiring a to-be-displayed picture of a display device; the to-be-displayed picture of the display device comprises to-be-displayed gray scales of the display device;
acquiring display driving time and detection time of a display device; the detection time is the time for detecting the parameters of the display device;
determining actual driving voltage data and actual display time of the display device according to the gray scale to be displayed, the display driving time and the detection time of the display device and a preset corresponding relation; the actual driving voltage data is larger than the voltage data to be driven corresponding to the gray scale to be displayed;
driving the display device for an actual display time using actual driving voltage data of the display device.
In some embodiments, the step of obtaining the display driving time and the detection time of the display device includes:
acquiring the driving frequency of a display device;
and determining the display driving time and the detection time of the display device according to the driving frequency of the display device.
In some embodiments, the step of determining the display driving time and the detection time of the display device according to the driving frequency of the display device includes:
determining the driving time of the display device according to the driving frequency of the display device;
determining display driving time and blank time of the display device according to the driving time of the display device;
and determining the detection time of the display device according to the blank time of the display device.
In some embodiments, the step of determining the actual driving voltage data and the actual display time of the display device according to the gray scale to be displayed, the display driving time, the detection time, and the preset corresponding relationship of the display device includes:
acquiring voltage data to be driven corresponding to gray scales to be displayed of a display device;
determining the corresponding relation between the driving voltage data and the display gray scale of the display device according to the gray scale to be displayed and the voltage data to be driven of the display device;
determining the actual display gray scale of the display device according to the gray scale to be displayed, the display driving time and the detection time of the display device and the preset corresponding relation;
and determining the actual driving voltage data of the display device according to the actual display gray scale of the display device and the corresponding relation between the driving voltage data of the display device and the display gray scale.
In some embodiments, the step of determining an actual display gray scale of the display device according to the to-be-displayed gray scale, the display driving time, the detection time, and the preset corresponding relationship of the display device includes:
determining the actual display time of the display device according to the display driving time and the detection time;
and determining the actual display gray scale of the display device according to the actual display time, the display driving time, the gray scale to be displayed and a preset corresponding relation.
In some embodiments, the step of determining the actual display gray scale of the display device according to the actual display time, the display driving time, the gray scale to be displayed, and a preset corresponding relationship includes:
setting a preset corresponding relation that the product of the gray scale to be displayed and the display driving time is equal to the product of the actual display gray scale and the actual display time;
determining the product of the display driving time and the gray scale to be displayed according to the display driving time and the gray scale to be displayed;
and dividing the actual display time by the product of the display driving time and the gray scale to be displayed to obtain the actual display gray scale of the display device.
In some embodiments, the step of driving the display device using the actual driving voltage data of the display device comprises:
determining first actual display time and second actual display time of the display device according to the actual display time and the data writing time of the display device;
and inputting actual driving voltage data to the display device at the first actual display time and the second actual display time.
In some embodiments, the step of driving the display device using the actual driving voltage data of the display device comprises:
determining first actual display time and second actual display time of the display device according to the actual display time and the data writing time of the display device;
determining first actual driving voltage data and second actual driving voltage data of the display device according to the actual driving voltage data;
and inputting first actual driving voltage data to the display device at the first actual display time, and inputting second actual driving voltage data to the display device at the second actual display time.
In some embodiments, the step of determining the actual driving voltage data and the actual display time of the display device according to the gray scale to be displayed, the display driving time, the detection time, and the preset corresponding relationship of the display device includes:
acquiring the corresponding relation between the driving voltage data and the display gray scale of the display device;
determining voltage data to be driven of the display device according to the gray scale to be displayed and the corresponding relation between the driving voltage data of the display device and the display gray scale;
determining the actual display gray scale of the display device according to the gray scale to be displayed, the display driving time and the detection time of the display device and the preset corresponding relation;
determining the relation between the voltage data to be driven and the actual driving voltage data according to the gray scale to be displayed and the actual display gray scale and the corresponding relation between the driving voltage data of the display device and the display gray scale;
and determining the actual driving voltage data of the display device according to the voltage data to be driven and the relation between the voltage data to be driven and the actual driving voltage data.
Meanwhile, an embodiment of the present application provides a display device, which includes a display panel and a driving chip, where the driving chip is configured to execute the steps in the display device driving method described in any of the foregoing embodiments.
Has the advantages that: the embodiment of the application provides a display device and a driving method thereof, wherein the driving method of the display device comprises the steps of firstly obtaining a picture to be displayed of the display device, then obtaining display driving time and detection time of the display device, then determining actual driving voltage data and actual display time of the display device according to a gray scale to be displayed, the display driving time and the detection time of the display device and a preset corresponding relation, and then driving the display device in the actual display time by using the actual driving voltage data of the display device; according to the embodiment of the application, the mobility of the driving transistor is detected by the display device, so that the actual driving voltage data and the actual display time of the display device can be determined according to the gray scale to be displayed, the display driving time and the detection time of the display device and the preset corresponding relation by acquiring the gray scale to be displayed, the display driving time and the detection time of the display device, the actual driving voltage data is larger than the voltage data to be driven, larger driving voltage data is input in shorter display time, the driving voltage data of the display device is compensated, and the brightness of the display device is improved.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic flowchart of a driving method of a display device according to an embodiment of the present disclosure.
Fig. 2 is a schematic diagram of a time period of a frame of a display device according to an embodiment of the present application.
Fig. 3 is a schematic diagram illustrating a correspondence relationship between light-emitting brightness and light-emitting time of a display device according to an embodiment of the present application.
Fig. 4 is a schematic view of a display device according to an embodiment of the present application.
Fig. 5 is a circuit diagram of a driving circuit of a display device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The embodiment of the application aims at the technical problem that when the mobility of a driving transistor is tested in the existing display device, the brightness of the display device is reduced, and the embodiment of the application is used for solving the technical problem.
As shown in fig. 1, an embodiment of the present application provides a display device driving method, including:
s1, acquiring a to-be-displayed picture of a display device; the picture to be displayed of the display device comprises the gray scale to be displayed of the display device;
s2, acquiring display driving time and detection time of the display device; the detection time is the time for detecting the parameters of the display device;
s3, determining actual driving voltage data and actual display time of the display device according to the gray scale to be displayed, the display driving time and the detection time of the display device and a preset corresponding relation; the actual driving voltage data is larger than the voltage data to be driven corresponding to the gray scale to be displayed;
and S4, driving the display device in actual display time by using the actual driving voltage data of the display device.
The embodiment of the application provides a display device driving method, which determines actual driving voltage data of a display device by acquiring a gray scale to be displayed, display driving time and detection time of the display device, and according to the gray scale to be displayed, the display driving time and the detection time of the display device and a preset corresponding relation, so that the actual driving voltage data of the display device is larger than the voltage data to be driven, when the display device detects the mobility of a driving transistor to reduce the brightness of the display device, the driving voltage data and the actual display time of the display device are improved, and larger driving voltage data are input into the display device within a shorter time, so that the brightness of the display device is compensated, and the brightness of the display device is improved.
When it is required to be described, the detection time refers to a time for detecting a parameter of the display device, and the parameter of the display device includes mobility of the driving transistor.
It should be noted that the display driving time refers to a theoretical time for inputting driving voltage data to the display device for displaying, and when detecting the mobility of the driving transistor of the display device, the display driving time includes a detection time.
The actual drive voltage data refers to drive voltage data after luminance compensation of the display device.
The actual display time is a time that can be actually displayed, and is smaller than the display driving time when the display device detects the mobility of the driving transistor.
In one embodiment, when the display driving time and the detecting time of the display device are obtained, the display driving time and the detecting time of the display device can be determined according to the driving frequency of the display device, and the method includes the following steps: acquiring the driving frequency of a display device; determining the display driving time and the detection time of the display device according to the driving frequency of the display device; specifically, for example, if the driving frequency of the display device is 60 hz, it may be determined that one frame is 1/60s, and then the corresponding display time period and blank time period may be determined according to the time of one frame, and if the display device continuously inputs data in one frame while inputting data, the display driving time of the display device is one frame, and for different detection modes, the detection may be performed at different times, for example, the detection may be performed in the blank time period, and then the detection time may be determined according to the blank time.
In an embodiment, when determining the display driving time and the detection time of the display device, the display driving time and the detection time may be determined according to setting parameters of the display device, for example, for display devices with different sizes and display devices with different brightness requirements, when driving voltage data is input to the display device, the display driving time of the display device is different, and at the same time, different detection times may exist in different display devices, the display driving time and the detection time of the display device may be set in a memory or a storage, and when the display driving time and the detection time of the display device need to be obtained, the display driving time and the detection time of the display device may be directly obtained from the memory or the storage.
In one embodiment, when determining the display driving time and the detecting time of the display device according to the driving frequency of the display device, the display driving time of the display device may be determined according to the driving time of the display device, and the detecting time of the display device may be determined according to the blank time of the display device, the method includes: determining the driving time of the display device according to the driving frequency of the display device; determining display driving time and blank time of the display device according to the driving time of the display device; determining the detection time of the display device according to the blank time of the display device; specifically, for example, if the driving frequency of the display device is 60 hz, then it may be determined that one frame is 1/60s, and then the time of the display period and the time of the blank period are determined according to the time 1/60s of one frame, if the display device continuously inputs voltage data for each frame, the display driving time is the driving time, for example, 1/60s, if the display device continuously inputs voltage data for each frame, the display driving time is the time length of the display period, and if the mobility of the driving transistor is detected in the blank period, the detection time may be determined according to the blank time, thereby determining the display driving time and the detection time.
In one embodiment, when determining the actual driving voltage data of the display device according to the to-be-displayed gray scale, the display driving time, the detection time, and the preset corresponding relationship of the display device, the actual driving voltage data of the display device may be determined by first determining the corresponding relationship between the driving voltage data of the display device and the display gray scale, then determining the actual display gray scale of the display device according to the actual display gray scale of the display device and the corresponding relationship between the driving voltage data and the display gray scale, and the step includes: acquiring voltage data to be driven corresponding to gray scales to be displayed of a display device; determining the corresponding relation between the driving voltage data and the display gray scale of the display device according to the gray scale to be displayed and the voltage data to be driven of the display device; determining the actual display gray scale of the display device according to the gray scale to be displayed, the display driving time and the detection time of the display device and the preset corresponding relation; specifically, for example, if the to-be-driven voltage of the to-be-displayed gray scale of the display device is a, and the to-be-displayed gray scale of the display device is b, the relationship between a and b may be established according to a and b, and then the actual display gray scale of the display device, for example, c, may be determined according to the to-be-displayed gray scale of the display device, the display driving time, the detection time, and the preset corresponding relationship, and the corresponding relationship between the driving voltage data of the display device and the display gray scale, that is, the relationship between a and b, may be obtained according to the actual display gray scale c of the display device, and the corresponding relationship between the driving voltage data of the display device and the display gray scale, that is, the relationship between a and b.
In one embodiment, when determining the actual display gray scale of the display device according to the to-be-displayed gray scale, the display driving time, the detection time, and the preset corresponding relationship of the display device, the actual display time of the display device may be determined first, and then the actual display gray scale of the display device may be determined according to the actual display time, the display driving time, the to-be-displayed gray scale, and the preset corresponding relationship, the step including: determining the actual display time of the display device according to the display driving time and the detection time; determining the actual display gray scale of the display device according to the actual display time, the display driving time, the gray scale to be displayed and a preset corresponding relation; specifically, for example, if the display driving time of the display device is one frame, the detection time of the display device is blank time, the actual display time of the display device is the time length of the display time period, and then the actual display gray scale of the display device is determined according to the actual display time, the display driving time, the gray scale to be displayed, and the preset corresponding relationship, that is, if the actual display time of the display device is less than the display driving time, the actual display gray scale can be obtained according to the preset corresponding relationship, for example, the actual display time is 1/90s, the display driving time is 1/60s, and the luminance of the gray scale to be displayed is 100, the actual display gray scale can be obtained according to the data and the preset corresponding relationship.
In one embodiment, when determining the actual display gray scale of the display device according to the actual display time, the display driving time, the to-be-displayed gray scale, and the preset corresponding relationship, the preset corresponding relationship is set first, and then the actual display gray scale is obtained according to the preset corresponding relationship, the actual display time, the display driving time, and the value of the to-be-displayed gray scale, which includes: setting a preset corresponding relation that the product of the gray scale to be displayed and the display driving time is equal to the product of the actual display gray scale and the actual display time; determining the product of the display driving time and the gray scale to be displayed according to the display driving time and the gray scale to be displayed; dividing the product of the display driving time and the gray scale to be displayed by the actual display time to obtain the actual display gray scale of the display device; specifically, the luminance of the gray scale to be displayed is lum1, the display driving time is T1, the actual display gray scale is lum2, and the actual display time is T2, then lum1 × T1= lum2 × T2, and if lum1 is 100, T1 is 1/60, and T2 is 1/90, then lum2 is 150, thereby determining the actual display gray scale of the display device.
In one embodiment, when the display device is driven using the actual driving voltage data of the display device, two display periods of the display device may be determined according to an actual display time and a data writing time of the display device, and then the actual driving voltage data may be input to the display device for the two periods, the step including: determining first actual display time and second actual display time of the display device according to the actual display time and the data writing time of the display device; specifically, when the actual display time is the display time period of the current frame + the blank time period-the data writing time period of the current frame + the data writing time period of the next frame, and the detection time of the display device is the blank time period, it may be determined that the actual display time includes a first actual display time of the display time period of the current frame-the data writing time period of the current frame, and a second actual display time of the data writing time period of the next frame, so that the actual drive voltage data is respectively input at the first actual display time and the second actual display time, thereby improving the brightness of the display device.
In an embodiment, after determining the actual driving voltage data, inputting different driving voltage data at different actual display times, so that the product of the different actual display times and the driving voltage data is equal to the product of the driving voltage data to be displayed and the display driving time, and this step includes: determining first actual display time and second actual display time of the display device according to the actual display time and the data writing time of the display device; determining first actual driving voltage data and second actual driving voltage data of the display device according to the actual driving voltage data; inputting first actual driving voltage data to the display device at the first actual display time, and inputting second actual driving voltage data to the display device at the second actual display time; specifically, for example, if the actual driving voltage data is 3 volts and the actual driving time is 1/90s, 2/3 volts may be input into the first actual display time 1/120s and 2 volts may be input into the second actual display time 1/360s, so that the display device displays the actual display gray scale, and the display device is compensated to improve the display effect of the display device.
In one embodiment, the method may further include pre-storing a corresponding relationship between driving voltage data and display gray scale in the display device, determining voltage data to be driven according to the gray scale to be displayed, determining an actual display gray scale of the display device according to the gray scale to be displayed, the display driving time, the detection time, and the preset corresponding relationship, and determining a relationship between the voltage data to be driven and the actual driving voltage data according to the gray scale to be displayed, the actual display gray scale, and the corresponding relationship between the driving voltage data and the display gray scale of the display device, so that the actual driving voltage data of the display device is determined according to the voltage data to be driven and the relationship between the voltage data to be driven and the actual driving voltage data, the step includes: acquiring the corresponding relation between the driving voltage data and the display gray scale of the display device; determining voltage data to be driven of the display device according to the gray scale to be displayed and the corresponding relation between the driving voltage data of the display device and the display gray scale; determining the actual display gray scale of the display device according to the gray scale to be displayed, the display driving time and the detection time of the display device and the preset corresponding relation; determining the relation between the voltage data to be driven and the actual driving voltage data according to the gray scale to be displayed and the actual display gray scale and the corresponding relation between the driving voltage data of the display device and the display gray scale; determining actual driving voltage data of the display device according to the voltage data to be driven and the relation between the voltage data to be driven and the actual driving voltage data; specifically, for example, the corresponding relationship between the driving voltage data of the display device and the display gray scale is a gamma 2.2 (gamma 2.2) curve, when the brightness of the gray scale to be displayed is known, the voltage data to be driven of the display device can be obtained, and meanwhile, the actual display gray scale of the display device can be determined, so that the corresponding relationship between the voltage data to be driven and the actual driving voltage data can be determined according to the actual display gray scale and the gray scale to be displayed of the display device and the gamma 2.2, so that when the display device needs to be driven, only the voltage data to be driven needs to be determined, the actual driving voltage data of the display device can be determined, the brightness of the display device is compensated, and the display effect of the display device is improved.
As shown in fig. 2, in the timing sequence of the display device, fig. 2 shows a timing chart of any two frames, where the time for displaying the first frame is a frame time 111 including a display time period 113 and a blank time period 114, in the display time period 113, when display is required, data writing is first required, so that there is a writing time period 112, the time for displaying the second frame is a frame time 121, which includes a display time period 123 and a blank time period 124, in the display time period 123, there is also a writing time period 122, when mobility of a driving transistor of the display device is not detected, after data writing of the first frame is completed by a display time 115 of the display device, data writing of the second frame is completed, after data writing of the second frame is completed by a display time 125 of the second frame, data writing of the third frame is completed, and when mobility of the driving transistor of the display device is detected, the display driving time of the first frame of the display device is the sum of the times represented by reference numerals 116, 117, 118 and 119, which are represented by times t1, t2, t3 and t4, respectively, the display driving time of the first frame of the display device is the sum of the times represented by reference numerals 126, 127, 128 and 129, and since the display time and the detection time of each frame of the display device are the same, similarly represented by t1, t2, t3 and t4, it can be known that the display driving time of the display device is t1+ t2+ t3+ t4, and the detection time is t2+ t3, where t2 is the time of the detection phase, t3 is the phase of detecting the re-writing of the received data, and when the display device detects, the display device cannot display, the actual display time of the display device is T1+ T4, as shown in fig. 3, the abscissa is the light-emitting time, the ordinate is the light-emitting brightness, when the product of the light-emitting time and the light-emitting brightness is equal, the human eye perceives the brightness of the display device equally, when A1= A2, i.e., L1T 1= L2T 2, the human eye perceives the brightness of the display device equally, therefore, when detecting the mobility of the driving transistor of the display device, according to the display driving time of the display device, for example, T1+ T2+ T3+ T4, the detection time is T2+ T3, the actual display time is T1+ T4, and the brightness corresponding to the gray scale to be displayed of the display device is lum1, the preset corresponding relationship is lum2= lum1 (T1 + T4) = lum1 (T1 + T2+ T3+ T4), the actual display brightness of the display device is lum2= lum 1= (T1 + T2+ T3+ T4), the actual display brightness of the display device is obtained by directly detecting the display voltage and the display voltage data, and the actual display data obtained by directly outputting the display data and the display voltage data obtained by detecting the display voltage data obtained by directly using the display device data obtained by detecting the display voltage data and the actual display voltage data obtained by detecting the display device.
In an embodiment, the present application adopts gama2.2 to establish the relationship between the luminance and the driving voltage data, but the present application is not limited thereto, and other conversion relationships between the driving voltage data and the luminance according to the light emitting requirement can be used as the relationship between the luminance and the driving voltage data.
Meanwhile, an embodiment of the present application provides a display device, which includes a display panel and a driving chip, where the driving chip is configured to perform the steps in the display device driving method according to any one of the foregoing embodiments.
As shown in fig. 4, an embodiment of the present application provides a display device, which includes a display panel 41 and a driving chip 42, where the driving chip 42 includes:
a first obtaining module 421, configured to obtain a to-be-displayed picture of a display device; the picture to be displayed of the display device comprises the gray scale to be displayed of the display device;
a second obtaining module 422, configured to obtain display driving time and detection time of the display device; the detection time is the time for detecting the parameters of the display device;
the determining module 423 is configured to determine actual driving voltage data and actual display time of the display device according to a to-be-displayed gray scale, display driving time, and detection time of the display device, and a preset corresponding relationship; the actual driving voltage data is larger than the voltage data to be driven corresponding to the gray scale to be displayed;
a driving module 424, configured to drive the display device within an actual display time using actual driving voltage data of the display device.
The embodiment of the application provides a display device, the display device comprises a display panel and a driving chip, when the display panel is driven to display, when the mobility of a driving transistor of the display device is detected, the gray scale to be displayed, the display driving time and the detection time of the display device can be obtained through a first obtaining module and a second obtaining module, then the actual driving voltage data and the actual display time of the display device are determined according to the gray scale to be displayed, the display driving time and the detection time of the display device and the preset corresponding relation, so that the actual driving voltage data is larger than the actual driving voltage data, larger voltage data are output in a shorter time, the display device is compensated, and the brightness of a display device is improved.
In one embodiment, as shown in fig. 5, the 3T1C driving circuit of the display device includes a data line Vdata, a scan line Vscan, a sensing line Vsensing, a power source terminal VDD, a power source terminal VSS, a switching transistor T1, a driving transistor T2, a sensing transistor T3, a storage capacitor Cst, and a light emitting unit LED, and when the display device is driven to emit light, the luminance of the display device is compensated by inputting an actual driving voltage data to the data line Vdata, but the embodiment of the present application is not limited thereto, and the actual driving voltage data in the embodiment of the present application may also be applied to other driving circuits, such as 2T1C and 7T1C circuits.
In one embodiment, the display panel comprises an OLED display panel, a mini LED display panel and a micro LED display panel.
In one embodiment, the transistors include N-type transistors and P-type transistors.
In one embodiment, the mobility of the driving transistor of the display device is detected by using a one-gate or two-gate, where one-gate is the switch transistor and the sensing transistor connected together, and two-gate is the switch transistor and the sensing transistor separated.
In an embodiment, after obtaining the corresponding relationship between the voltage data to be driven and the actual driving voltage data, an LUT (look-up table) of the voltage data to be driven and the actual driving voltage data may be established, and the LUT may be stored in a field programmable gate array, or stored in a memory, so that when the actual driving voltage data needs to be used, the actual driving voltage data is obtained directly according to the voltage data to be driven and the LUT, thereby compensating the brightness of the display device.
According to the above embodiment:
the embodiment of the application provides a display device and a driving method thereof, wherein the driving method of the display device comprises the steps of firstly obtaining a picture to be displayed of the display device, then obtaining display driving time and detection time of the display device, then determining actual driving voltage data and actual display time of the display device according to a gray scale to be displayed, the display driving time and the detection time of the display device and a preset corresponding relation, and then driving the display device in the actual display time by using the actual driving voltage data of the display device; in the embodiment of the application, the mobility of the driving transistor is detected by the display device, so that the actual driving voltage data and the actual display time of the display device are determined according to the gray scale to be displayed, the display driving time and the detection time of the display device and the preset corresponding relation by acquiring the gray scale to be displayed, the display driving time and the detection time of the display device, the actual driving voltage data is larger than the voltage data to be driven, larger driving voltage data is input in shorter display time, the driving voltage data of the display device is compensated, and the brightness of the display device is improved.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The display device and the driving method thereof provided by the embodiments of the present application are described in detail above, and the principles and embodiments of the present application are explained herein by applying specific examples, and the description of the embodiments above is only used to help understanding the technical solutions and the core ideas of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.

Claims (6)

1. A display device driving method, comprising:
acquiring a to-be-displayed picture of a display device; the picture to be displayed of the display device comprises the gray scale to be displayed of the display device;
acquiring display driving time and detection time of a display device; the detection time is the time for detecting the parameters of the display device;
determining actual driving voltage data and actual display time of the display device according to the gray scale to be displayed, the display driving time and the detection time of the display device and a preset corresponding relation; the actual driving voltage data is larger than the voltage data to be driven corresponding to the gray scale to be displayed; the method specifically comprises the following steps: acquiring voltage data to be driven corresponding to gray scales to be displayed of a display device; determining the corresponding relation between the driving voltage data and the display gray scale of the display device according to the gray scale to be displayed and the voltage data to be driven of the display device; determining the actual display time of the display device according to the display driving time and the detection time; setting a preset corresponding relation that the product of the gray scale to be displayed and the display driving time is equal to the product of the actual display gray scale and the actual display time; determining the product of the display driving time and the gray scale to be displayed according to the display driving time and the gray scale to be displayed; dividing the actual display time by the product of the display driving time and the gray scale to be displayed to obtain the actual display gray scale of the display device; determining actual driving voltage data of the display device according to the actual display gray scale of the display device and the corresponding relation between the driving voltage data of the display device and the display gray scale;
driving the display device for an actual display time using actual driving voltage data of the display device.
2. The method for driving a display device according to claim 1, wherein the step of obtaining the display driving time and the detection time of the display device comprises:
acquiring the driving frequency of a display device;
and determining the display driving time and the detection time of the display device according to the driving frequency of the display device.
3. The method for driving a display device according to claim 2, wherein the step of determining the display driving time and the detection time of the display device according to the driving frequency of the display device comprises:
determining the driving time of the display device according to the driving frequency of the display device;
determining display driving time and blank time of the display device according to the driving time of the display device;
and determining the detection time of the display device according to the blank time of the display device.
4. The display device driving method according to claim 1, wherein the step of driving the display device for an actual display time using actual driving voltage data of the display device comprises:
determining first actual display time and second actual display time of the display device according to the actual display time and the data writing time of the display device;
and inputting actual driving voltage data to the display device at the first actual display time and the second actual display time.
5. The display device driving method according to claim 1, wherein the step of driving the display device for an actual display time using actual driving voltage data of the display device comprises:
determining first actual display time and second actual display time of the display device according to the actual display time and the data writing time of the display device;
determining first actual driving voltage data and second actual driving voltage data of the display device according to the actual driving voltage data;
and inputting first actual driving voltage data to the display device at the first actual display time, and inputting second actual driving voltage data to the display device at the second actual display time.
6. A display device comprising a display panel and a driver chip for performing the steps in the display device driving method according to any one of claims 1 to 5.
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