CN111508434B - Method and device for compensating brightness of OLED display screen - Google Patents
Method and device for compensating brightness of OLED display screen Download PDFInfo
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- CN111508434B CN111508434B CN202010341889.5A CN202010341889A CN111508434B CN 111508434 B CN111508434 B CN 111508434B CN 202010341889 A CN202010341889 A CN 202010341889A CN 111508434 B CN111508434 B CN 111508434B
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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]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
- G09G3/3233—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the current through the light-emitting element
Abstract
The application discloses a method for compensating brightness of an OLED display screen, which is used for improving brightness jump of the OLED display screen after the screen is extinguished and the screen is lightened again, and comprises the following steps: testing the change of the brightness of a certain number of OLED display screens along with time, and counting test data of brightness jump of the OLED display screens after the OLED display screens are turned off and turned on again to obtain a first curve; determining a jump rule of each jump in the test data of the brightness jump along with the change of time, and statistically fitting reverse compensation data and a distribution curve to obtain a second curve; carrying out reverse compensation on the current for re-lightening the OLED display screen after the OLED display screen is turned off; and detecting the result of the reverse compensation, and performing secondary reverse compensation on the current for re-lighting the OLED display screen after the OLED display screen is turned off according to the detection result. The application also discloses a compensation device. According to the method and the device, the phenomenon that the brightness jumps after the OLED display screen is turned off and is lightened again can be reduced or even eliminated.
Description
Technical Field
The application relates to the technical field of display, in particular to a method and a compensation device for compensating brightness of an OLED display screen.
Background
Electroluminescent Light Emitting diodes (OLEDs), such as Organic Light Emitting Diodes (OLEDs), are widely used in display panels. The OLED display panel controls the light emitting display of the OLED display panel by controlling the current flowing through the OLED. However, as the OLED screen is used, the brightness is reduced, and the following results are found through experiments: when the screen is turned on for a period of time, the screen is interrupted and then turned on, and the brightness of the OLED screen jumps once.
Luminance has been a great concern for panel and overall applications as one of the core parameters of OLED display products. Since the OLED display screen is a self-luminous device, no backlight is used, and the brightness is determined by the TFT and the OLED device. As the light emitting time increases, the brightness decreases due to the change of the electrical characteristics of the driving circuit (such as threshold voltage shift, voltage drop change, etc.), and the aging of the OLED device itself. Experiments show that the brightness reduction can be tracked in the process of screen lighting, but after the screen is lightened again after being extinguished, the brightness can jump obviously once. This brightness jump reduces the lifetime of the OLED screen and also creates a very poor user experience for the user.
In view of this, a problem to be solved by those skilled in the art is how to avoid the phenomenon of brightness jump after the OLED display screen is turned off and turned on again.
Disclosure of Invention
The embodiment of the application provides a method and a compensation device for compensating the brightness of an OLED display screen, which can reduce or even eliminate the phenomenon of brightness jump of the OLED display screen after the OLED display screen is turned off and turned on again.
The embodiment of the application provides a method for compensating brightness of an OLED display screen, which is used for improving brightness jump of the OLED display screen after the screen is extinguished and the screen is lightened again, and the method comprises the following steps:
s10, testing the change of the brightness of a certain number of OLED display screens along with time, and counting test data of brightness jump of the OLED display screens after the OLED display screens are turned off and turned on again to obtain a first curve;
s20, determining a jump rule of each jump in the test data of brightness jump along with time change, and statistically fitting reverse compensation data and a distribution curve to obtain a second curve;
s30, carrying out reverse compensation on the current for re-lightening the OLED display screen after the OLED display screen is turned off;
and S40, detecting the result of the reverse compensation, and performing secondary reverse compensation on the current for re-lighting the OLED display screen after the OLED display screen is turned off according to the detection result.
In some embodiments, in S20, the transition law includes a time span generated by each transition and a time-varying amplitude of the brightness in the time span.
In some embodiments, in S30, the inverse compensation method includes: and controlling the voltage and the current at two ends of the OLED display screen when the OLED display screen is turned off through a power consumption management chip to reversely compensate the brightness jump.
In some embodiments, the S30 specifically includes:
s301, recording current and voltage values of the OLED display screen in each screen off process through a power consumption management chip, and calculating the brightness of the OLED display screen in the screen off process according to the second curve;
s302, calculating the jump amplitude of the brightness of the OLED display screen when the screen is lighted next time according to the first curve;
and S303, adjusting the current for re-lightening the OLED display screen after the OLED display screen is turned off according to the jumping amplitude and the relation curve of the current and the brightness, so as to reduce or eliminate the brightness jump.
In some embodiments, in S30, the inverse compensation method may further include: and the writing of data signals in a pixel circuit of the OLED display screen is controlled through a display driving chip, the opening degree of a switching thin film transistor is accurately controlled or a compensation circuit is added, and the jump of reverse compensation brightness is indirectly controlled.
In some embodiments, in S30, the reverse compensation manner may further include: and recording the current and the voltage of the OLED display screen when the OLED display screen is turned off in real time through a main board CPU of the OLED display screen, and adjusting the data image given to the screen at the next time point according to the relation between the brightness and the current in the jump curve to reversely compensate the brightness jump.
The embodiment of the present application further provides a compensation device for improving the brightness jump of an OLED display screen after the screen is turned off and the screen is turned on again, the compensation device includes:
the sensing module is used for sensing the jump rule of the brightness of the OLED display screen along with the change of time when the OLED display screen is in a screen-off state and is lightened again;
the reverse compensation module is used for performing reverse compensation on the current for re-lightening the OLED display screen after the OLED display screen is turned off;
the detection module is used for detecting the result of the reverse compensation and feeding the detection result back to the reverse compensation module so as to perform secondary reverse compensation on the current for re-lighting the OLED display screen after the OLED display screen is turned off;
the reverse compensation module further comprises a jump rule which is determined in the test data of the brightness jump and changes along with time, and the data and the distribution curve of the reverse compensation are statistically fitted to obtain a second curve.
In some embodiments, the reverse compensation module controls a voltage and a current across the OLED display screen when the OLED display screen is turned off through a power consumption management chip to reversely compensate for a brightness jump.
In some embodiments, the reverse compensation module may further control writing of a data signal in a pixel circuit of the OLED display screen, precisely control the turn-on degree of a switching thin film transistor, or add a compensation circuit through a display driving chip to indirectly control the reverse compensation brightness jump.
In some embodiments, the reverse compensation module may further record, in real time, the current and the voltage of the OLED display screen at each screen turn-off through a main board CPU of the OLED display screen, and adjust, in real time, a data image to the screen at a next screen point according to a relationship between the brightness and the current in the jump curve to reversely compensate the brightness jump.
According to the method and the compensation device for compensating the brightness of the OLED display screen, the current flowing through the OLED display screen when the OLED display screen is turned off and is turned on again is reduced, the phenomenon that the brightness of the OLED display screen jumps can be reduced or even eliminated, and the display effect of the OLED display screen is further 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 flowchart of a method for compensating luminance of an OLED display according to an embodiment of the present disclosure.
Fig. 2A is a first graph formed from test data of luminance of the OLED display panel of fig. 1 as a function of time.
FIG. 2B is a second graph of test data for changes in luminance, time, and current of the OLED display panel of FIG. 1.
Fig. 3 is a block diagram of a compensation device according to an embodiment of the present disclosure.
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.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
Fig. 1 is a flowchart illustrating a method for compensating brightness of an OLED display according to an embodiment of the present disclosure. The method is used for improving the brightness jump of the OLED display screen after the OLED display screen is turned off and turned on again, and comprises the following steps:
s10, testing the change of the brightness of a certain number of OLED display screens along with time, and counting the test data of brightness jump of the OLED display screens after the OLED display screens are turned off and turned on again to obtain a first curve.
Specifically, the S10 further includes:
firstly, providing a certain number of OLED display screens, testing the change of the brightness of the OLED display screens along with time to obtain the brightness data of the corresponding OLED display screens at a certain moment, and counting the test data of brightness jump of the OLED display screens after the OLED display screens are turned off and turned on again. Then, these discrete data are used as a fitting curve to obtain a first curve of the luminance of the OLED display screen changing with time, as shown in fig. 2A.
In the first curve, the abscissa represents time (h) and the ordinate represents brightness (nits). In the time period T1, the OLED display screen has a first brightness jump after being extinguished and relight, and the test interruption time DeltaT 1 is 38H. And in the time period T2, the OLED display screen generates a second brightness jump after being extinguished and relight, and the test interruption time delta T2 is 9H. According to the first curve, the brightness is attenuated along with the use of the OLED screen; when the screen is turned on for a period of time, the screen is interrupted and then turned on, and the brightness of the OLED screen jumps once.
And S20, determining the jump rule of each jump in the test data of brightness jump along with the change of time, and statistically fitting reverse compensation data and a distribution curve to obtain a second curve.
Specifically, the S20 further includes:
firstly, according to the first curve, determining a jump rule of each jump in the test data of the brightness jump along with the change of time. The jump law comprises a time span generated by each jump and the time-varying amplitude of the brightness in the time span. Then, the data and the distribution curve of the inverse compensation are statistically fitted to obtain a second curve, as shown in fig. 2B.
Wherein, in the second curve, the abscissa is time (h) and the ordinate is luminance (cd/m)2Or nits). According to the second curve, the brightness is attenuated at the same current along with the use of the OLED screen; at the same time, the larger the current is, the larger the brightness of the OLED display screen is.
Therefore, according to the rule of the first curve and the second curve, it can be known that: when the screen is turned on, the brightness has a descending regular curve under the same current. After the screen is turned off, the screen brightness jump is clicked, and the current of the screen is properly reduced according to the brightness jump, so that the brightness of the whole screen can be kept to be uniformly changed in the whole service period without jumping.
And S30, performing reverse compensation on the current for re-lighting the OLED display screen after the OLED display screen is extinguished.
Specifically, the S30 further includes the following three embodiments:
the first embodiment is specifically as follows:
and carrying out reverse compensation on the current for re-lightening the OLED display screen after the OLED display screen is extinguished. The voltage (VDD/VSS) and the current at two ends of the OLED display screen when the OLED display screen is turned off can be controlled through a power consumption management chip (PMIC) to reversely compensate the brightness jump. The method specifically comprises the following steps: firstly, recording current and voltage values of the OLED display screen when the OLED display screen is turned off each time through the power consumption management chip, and calculating the brightness of the OLED display screen when the OLED display screen is turned off according to the second curve; then, calculating the jump amplitude of the brightness of the OLED display screen when the screen is lighted next time according to the first curve; and finally, adjusting the current for re-lightening the OLED display screen after the OLED display screen is turned off according to the jumping amplitude and the relation curve of the current and the brightness so as to reduce or eliminate the brightness jump.
The second embodiment is specifically as follows:
and carrying out reverse compensation on the current for re-lightening the OLED display screen after the OLED display screen is extinguished. The writing of a Data signal (Data) in a pixel circuit of the OLED Display screen is controlled through a Display Driver IC, the opening degree of a switching Thin Film Transistor (TFT) is accurately controlled or a compensation circuit is added, and the jump of the reverse compensation brightness is indirectly controlled.
The third embodiment is specifically as follows:
and carrying out reverse compensation on the current for re-lightening the OLED display screen after the OLED display screen is extinguished. And the current and the voltage of the OLED display screen during each screen off can be recorded in real time through a main Board CPU (Main Board CPU) of the OLED display screen, and the data image of the screen is adjusted in real time at the next screen point according to the relation between the brightness and the current in a jump curve so as to reversely compensate the brightness jump.
And S40, detecting the result of the reverse compensation, and performing secondary reverse compensation on the current for re-lighting the OLED display screen after the OLED display screen is turned off according to the detection result.
Specifically, the S40 further includes:
first, the result of the reverse compensation is detected and analyzed. And if the brightness jump disappears when the OLED display screen is turned off and then is turned on again, carrying out secondary reverse compensation on the current for turning on the OLED display screen again after the OLED display screen is turned off according to the detection result, and further optimizing the compensation effect.
Fig. 3 is a schematic block diagram of a compensation apparatus according to an embodiment of the present disclosure. The compensation device is used for improving the brightness jump of the OLED display screen after the screen is extinguished and the screen is lightened again, and comprises:
the sensing module is used for sensing the jump rule of the brightness of the OLED display screen along with the change of time when the OLED display screen is in a screen-off state and is lightened again;
the reverse compensation module is used for performing reverse compensation on the current for re-lightening the OLED display screen after the OLED display screen is turned off;
the detection module is used for detecting the result of the reverse compensation and feeding the detection result back to the reverse compensation module so as to perform secondary reverse compensation on the current for re-lighting the OLED display screen after the OLED display screen is turned off;
the reverse compensation module further comprises a jump rule which is determined in the test data of the brightness jump and changes along with time, and the data and the distribution curve of the reverse compensation are statistically fitted to obtain a second curve.
Specifically, the jump law includes a time span generated by each jump and the amplitude of the brightness changing with time in the time span.
Specifically, the reverse compensation module further includes the following three embodiments:
the first embodiment is specifically as follows:
and carrying out reverse compensation on the current for re-lightening the OLED display screen after the OLED display screen is extinguished. The voltage (VDD/VSS) and the current at two ends of the OLED display screen when the OLED display screen is turned off can be controlled through a power consumption management chip (PMIC) to reversely compensate the brightness jump. The method specifically comprises the following steps: firstly, recording current and voltage values of the OLED display screen when the OLED display screen is turned off each time through the power consumption management chip, and calculating the brightness of the OLED display screen when the OLED display screen is turned off according to the second curve; then, calculating the jump amplitude of the brightness of the OLED display screen when the screen is lighted next time according to the first curve; and finally, adjusting the current for re-lightening the OLED display screen after the OLED display screen is turned off according to the jumping amplitude and the relation curve of the current and the brightness so as to reduce or eliminate the brightness jump.
The second embodiment is specifically as follows:
and carrying out reverse compensation on the current for re-lightening the OLED display screen after the OLED display screen is extinguished. The writing of a Data signal (Data) in a pixel circuit of the OLED Display screen is controlled through a Display Driver IC, the opening degree of a switching Thin Film Transistor (TFT) is accurately controlled or a compensation circuit is added, and the jump of the reverse compensation brightness is indirectly controlled.
The third embodiment is specifically as follows:
and carrying out reverse compensation on the current for re-lightening the OLED display screen after the OLED display screen is extinguished. And the current and the voltage of the OLED display screen during each screen off can be recorded in real time through a main Board CPU (Main Board CPU) of the OLED display screen, and the data image of the screen is adjusted in real time at the next screen point according to the relation between the brightness and the current in a jump curve so as to reversely compensate the brightness jump.
According to the method and the compensation device for compensating the brightness of the OLED display screen, the current flowing through the OLED display screen when the OLED display screen is turned off and is turned on again is reduced, the phenomenon of brightness jump of the OLED display screen can be reduced or even eliminated, and the display effect of the OLED display screen is further 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 method and the compensation device for compensating the brightness of the OLED display screen provided in the embodiments of the present application are described in detail above, and specific examples are applied herein to explain the principle and the implementation manner of the present application, 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 (10)
1. A method for compensating the brightness of an OLED display screen, which is used for improving the brightness jump of the OLED display screen after the screen is extinguished and relight, and is characterized by comprising the following steps:
s10, testing the change of the brightness of a certain number of OLED display screens along with time, and counting test data of brightness jump of the OLED display screens after the OLED display screens are turned off and turned on again to obtain a first curve;
s20, determining a jump rule of each jump in the test data of brightness jump along with time change, and statistically fitting reverse compensation data and a distribution curve to obtain a second curve;
s30, carrying out reverse compensation on the current for re-lightening the OLED display screen after the OLED display screen is turned off;
and S40, detecting the result of the reverse compensation, and performing secondary reverse compensation on the current for re-lighting the OLED display screen after the OLED display screen is turned off according to the detection result.
2. The method for compensating the brightness of the OLED display screen according to claim 1, wherein the transition law in S20 includes a time span generated by each transition and a time-varying amplitude of the brightness in the time span.
3. The method for compensating the brightness of the OLED display screen according to claim 1, wherein in S30, the inverse compensation comprises: and controlling the voltage and the current at two ends of the OLED display screen when the OLED display screen is turned off through a power consumption management chip to reversely compensate the brightness jump.
4. The method for compensating the brightness of the OLED display screen according to claim 1, wherein the S30 specifically includes:
s301, recording current and voltage values of the OLED display screen in each screen off process through a power consumption management chip, and calculating the brightness of the OLED display screen in the screen off process according to the second curve;
s302, calculating the jump amplitude of the brightness of the OLED display screen when the screen is lighted next time according to the first curve;
and S303, adjusting the current for re-lightening the OLED display screen after the OLED display screen is turned off according to the jumping amplitude and the relation curve of the current and the brightness, so as to reduce or eliminate the brightness jump.
5. The method for compensating the brightness of the OLED display screen according to claim 1, wherein in S30, the reverse compensation method further includes: and the writing of data signals in a pixel circuit of the OLED display screen is controlled through a display driving chip, the opening degree of a switching thin film transistor is accurately controlled or a compensation circuit is added, and the jump of reverse compensation brightness is indirectly controlled.
6. The method for compensating the brightness of the OLED display screen according to claim 1, wherein in S30, the reverse compensation method further includes: and recording the current and the voltage of the OLED display screen when the OLED display screen is turned off in real time through a main board CPU of the OLED display screen, and adjusting the data image given to the screen at the next time point according to the relation between the brightness and the current in the jump curve to reversely compensate the brightness jump.
7. A compensation device for improving brightness jump of an OLED display screen after the screen is extinguished and the screen is relighted, which is characterized by comprising:
the sensing module is used for sensing the jump rule of the brightness of the OLED display screen along with the change of time when the OLED display screen is in a screen-off state and is lightened again;
the reverse compensation module is used for performing reverse compensation on the current for re-lightening the OLED display screen after the OLED display screen is turned off;
the detection module is used for detecting the result of the reverse compensation and feeding the detection result back to the reverse compensation module so as to perform secondary reverse compensation on the current for re-lighting the OLED display screen after the OLED display screen is turned off;
the reverse compensation module further comprises a jump rule which is determined in the test data of the brightness jump and changes along with time, and the data and the distribution curve of the reverse compensation are statistically fitted to obtain a second curve.
8. The compensation apparatus as claimed in claim 7, wherein the reverse compensation module controls a voltage and a current across the OLED display screen to be turned off through a power management chip to reversely compensate for the brightness jump.
9. The compensation apparatus as claimed in claim 7, wherein the reverse compensation module further controls the reverse compensation brightness jump indirectly by controlling the writing of data signals in the pixel circuits of the OLED display panel through a display driving chip, precisely controlling the turn-on degree of the switching thin film transistor, or adding a compensation circuit.
10. The compensation apparatus as claimed in claim 7, wherein the reverse compensation module can further record the current and voltage of the OLED display screen at each turn-off in real time through a main board CPU of the OLED display screen, and adjust the data image to the screen at the next turn-on in real time according to the relationship between the brightness and the current in the jump curve to compensate the brightness jump reversely.
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| CN108122518A (en) * | 2016-11-28 | 2018-06-05 | 昆山国显光电有限公司 | The test method and device of response time |
| CN106991965A (en) * | 2017-05-08 | 2017-07-28 | 深圳市华星光电技术有限公司 | A kind of compensation of ageing system and method for OLED |
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