CN113674686A - Brightness adjusting circuit, brightness adjusting method and display panel - Google Patents
Brightness adjusting circuit, brightness adjusting method and display panel Download PDFInfo
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- CN113674686A CN113674686A CN202110943097.XA CN202110943097A CN113674686A CN 113674686 A CN113674686 A CN 113674686A CN 202110943097 A CN202110943097 A CN 202110943097A CN 113674686 A CN113674686 A CN 113674686A
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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]
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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
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
- G09G2320/0646—Modulation of illumination source brightness and image signal correlated to each other
Abstract
The application discloses brightness control circuit, brightness control method and display panel, brightness control circuit includes: the device comprises a data line control unit, a signal management unit and a power supply control unit; the data line control unit is used for outputting a first control signal after receiving the brightness adjusting signal; the signal management unit is used for outputting a first adjusting signal after receiving the first control signal; the data line control unit is also used for adjusting the data line voltage of the pixel circuit according to the brightness adjusting signal after receiving the first adjusting signal; the power supply management unit is used for outputting a second control signal after receiving a power supply voltage adjusting signal of the pixel circuit; the signal management unit is also used for outputting a second adjusting signal when receiving a second control signal in a preset time period after outputting the first adjusting signal; the power supply control unit is used for receiving the second adjusting signal and stopping adjusting the power supply voltage of the pixel circuit according to the second adjusting signal. The display panel can reduce the brightness distortion of the display panel.
Description
Technical Field
The present disclosure relates to the field of OLED display panels, and in particular, to a brightness adjusting circuit, a brightness adjusting method and a display panel.
Background
Fig. 1 is a pixel circuit of a conventional OLED display panel, in which a DDI (display driver IC, display panel driving chip) that can adjust voltages of a gate line and a data line; the DDI may also adjust the supply voltages VDD and VSS of the display panel by controlling a PMIC (Power Management IC).
In the display panel, the brightness of the display panel can be adjusted by adjusting the voltage of the data lin; the power consumption of the display panel may be adjusted by adjusting the supply voltage VDD of the display panel. In the process of adjusting the brightness of the display panel, if the power consumption adjustment is performed at the same time, the brightness of the display panel is distorted.
Disclosure of Invention
The embodiment of the application provides a brightness adjusting circuit, a brightness adjusting method and a display panel, so as to reduce the brightness distortion of the display panel.
An embodiment of the present application provides a brightness control circuit, is applied to display panel, just brightness control circuit respectively with display panel's pixel circuit, data line adjustment circuit and power management unit are connected, the circuit includes: the device comprises a data line control unit, a signal management unit and a power supply control unit;
the data line control unit is used for outputting a first control signal after receiving the brightness adjusting signal output by the data line adjusting circuit;
the signal management unit is respectively connected with the data line control unit and the power management unit and is used for outputting a first adjusting signal to the data line control unit after receiving a first control signal;
the data line control unit is also used for adjusting the data line voltage of the pixel circuit according to the brightness adjusting signal after receiving the first adjusting signal;
the power supply management unit is used for outputting a second control signal after receiving a power supply voltage adjusting signal of the pixel circuit;
the signal management unit is further used for outputting a second adjusting signal to the power supply control unit after the first adjusting signal is output and when a second control signal is received within a preset time period;
and the power supply control unit is respectively connected with the signal management unit and the power supply management unit and is used for receiving the second adjusting signal and controlling the power supply management unit to stop adjusting the power supply voltage of the pixel circuit according to the second adjusting signal.
Optionally, the signal management unit is further configured to output a third adjustment signal to the power control unit after receiving the second control signal;
the power supply control unit is further configured to receive the third adjustment signal, and control the power supply management unit to adjust the power supply voltage of the pixel circuit according to the third adjustment signal;
the signal management unit is further configured to output a fourth adjustment signal to the data line control unit after the third adjustment signal is output and when the first control signal is received within a preset time period;
the data line control unit is further used for stopping adjusting the data line voltage of the pixel circuit after receiving the fourth adjusting signal.
Optionally, the signal management unit is further configured to output a fifth adjustment signal to the power control unit after receiving a third control signal, where the third control signal is output after the data line control unit adjusts the voltage of the data line of the pixel circuit;
and the power supply control unit is also used for controlling the power supply management unit to adjust the power supply voltage of the pixel circuit after receiving the fifth adjusting signal.
Optionally, the signal management unit is further configured to output a sixth adjustment signal to the data line control unit after receiving a fourth control signal, where the fourth control signal is output after the power management unit completes adjustment of the power supply voltage of the pixel circuit;
the data line control unit is further used for adjusting the data line voltage of the pixel circuit after receiving the sixth adjusting signal.
Optionally, the second control signal includes a number of pulses, the second adjustment signal includes the number of pulses, and the power supply control unit is specifically configured to, after receiving the second adjustment signal, control the power supply management unit to output pulses according to the number of pulses, so as to adjust the power supply voltage of the pixel circuit.
An embodiment of the present application further provides a brightness adjusting method applied to a brightness adjusting circuit of a display panel, where the brightness adjusting circuit is respectively connected to a pixel circuit, a data line adjusting circuit, and a power management unit of the display panel, and the brightness adjusting circuit includes: the power supply control device comprises a data line control unit, a signal management unit and a power supply control unit, wherein the signal management unit is respectively connected with the data line control unit and the power supply management unit, and the power supply control unit is respectively connected with the signal management unit and the power supply management unit; the method comprises the following steps:
receiving a first control signal, wherein the first control signal is sent out when the data line control unit receives a brightness adjusting signal output by the data line adjusting circuit;
outputting a first adjusting signal to the data line control unit to enable the data line control unit to adjust the data line voltage of the pixel circuit according to the brightness adjusting signal;
after the first adjusting signal is output and when a second control signal is received within a preset time period, a second adjusting signal is output to the power supply control unit, so that the power supply control unit controls the power supply management unit to stop adjusting the power supply voltage of the pixel circuit according to the second adjusting signal, wherein the second control signal is sent when the power supply management unit receives the power supply voltage adjusting signal of the pixel circuit.
Optionally, the method further comprises:
receiving a second control signal;
outputting a third adjusting signal to the power control unit to enable the power control unit to control the power management unit to adjust the power supply voltage of the pixel circuit according to the third adjusting signal;
and after the third adjusting signal is output and the first control signal is received within a preset time period, outputting a fourth adjusting signal to the data line control unit so that the data line control unit stops adjusting the data line voltage of the pixel circuit.
Optionally, the method further comprises:
receiving a third control signal, wherein the third control signal is output after the data line control unit finishes adjusting the voltage of the data line of the pixel circuit;
and outputting a fifth adjusting signal to the power supply control unit so that the power supply control unit controls the power supply management unit to adjust the power supply voltage of the pixel circuit according to the fifth adjusting signal.
Optionally, the method further comprises:
receiving a fourth control signal, wherein the fourth control signal is output after the power supply management unit finishes adjusting the power supply voltage of the pixel circuit;
and outputting a sixth adjusting signal to the data line control unit so that the data line control unit adjusts the data line voltage of the pixel circuit according to the sixth adjusting signal.
An embodiment of the present application further provides a display panel, where the brightness adjusting circuit is described above.
The application enables the signal management unit to output a first adjusting signal to the data line control unit according to the first control signal by outputting a first control signal to the signal management unit, so that the data line control unit adjusts the data line voltage of the pixel circuit according to the brightness adjusting signal, and during the adjusting process, when the signal management unit receives a second control signal, the signal management unit outputs a second adjusting signal to the power supply control unit, so that the power supply control unit controls the power supply management unit to stop adjusting the power supply voltage of the pixel circuit, wherein the signal management unit can indirectly control the timing of adjusting the data line voltage of the pixel circuit and adjusting the power supply voltage of the pixel circuit, namely when adjusting the data line voltage of the pixel circuit, the adjusting of the power supply voltage of the pixel circuit is stopped or prohibited, and the condition that the power consumption adjustment is carried out simultaneously during the brightness adjusting process is avoided, the brightness adjustment and the power consumption adjustment are orderly carried out, and the condition of brightness distortion of the display panel is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments of the present application will be briefly introduced 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 that other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a circuit diagram of a pixel circuit of an OLED display panel;
FIG. 2 is a schematic block diagram of a brightness adjustment circuit according to an embodiment of the present application;
FIG. 3 is a flowchart illustrating a brightness adjustment method according to an embodiment of the present application;
FIG. 4 is a schematic flow chart of a brightness adjustment method according to another embodiment of the present application;
FIG. 5 is a schematic flow chart of a brightness adjustment method according to another embodiment of the present application;
fig. 6 is a flowchart illustrating a brightness adjusting method according to another 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, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. 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 noted that the terms "first", "second", "third", and the like are used merely for distinguishing between descriptions and are not intended to indicate or imply relative importance.
In the description of the present application, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as meaning either a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
An embodiment of the present application provides a brightness adjusting circuit, which can be applied to a display panel, and referring to fig. 2, the brightness adjusting circuit is respectively connected to a pixel circuit, a data line adjusting circuit, and a power management unit of the display panel. The brightness adjustment circuit 100 includes: the device comprises a data line control unit 1, a signal management unit 2 and a power supply control unit, wherein the signal management unit 2 is respectively connected with the data line control unit 1 and the power supply management unit, and the power supply control unit 3 is respectively connected with the signal management unit 2 and the power supply management unit 4.
The data line control unit 1 is configured to control the data line adjusting circuit to adjust a data line voltage of the pixel circuit 5; the signal management unit 2 is used for controlling the working control time points of the data line control unit 1 and the power supply control unit 3; the power supply control unit 3 is used for controlling the power supply management unit 4 to adjust the voltage.
The data line control unit 1 is configured to output a first control signal after receiving a brightness adjustment signal output by the data line adjustment circuit, where the brightness adjustment signal is mainly used to adjust a data line voltage of the pixel circuit 5.
The signal management unit 2 is configured to output a first adjusting signal to the data line control unit 1 after receiving a first control signal, where the first control signal is sent when the data line control unit 1 receives a brightness adjusting signal output by the data line adjusting circuit;
the data line control unit 1 is further configured to adjust a data line voltage of the pixel circuit 5 according to the brightness adjustment signal after receiving the first adjustment signal;
the power management unit 4 is configured to output a second control signal after receiving the power supply voltage adjustment signal of the pixel circuit 5;
the signal management unit 2 is further configured to output a second adjustment signal after outputting the first adjustment signal and when receiving a second control signal within a preset time period, where the second control signal is sent when the power management unit 4 receives a power supply voltage adjustment signal of the pixel circuit 5;
the power control unit 3 is configured to receive the second adjustment signal and control the power management unit 4 to stop adjusting the power supply voltage of the pixel circuit 5 according to the second adjustment signal. Here, "stop" means to turn off or disable the supply voltage adjustment circuit of the pixel circuit 5 so that the power adjustment is not performed simultaneously when the brightness adjustment is performed.
In the above embodiment, the signal management unit 2 outputs the first control signal to the signal management unit 2, so that the signal management unit 2 outputs the first adjustment signal to the data line control unit 1 according to the first control signal, so that the data line control unit 1 adjusts the data line voltage of the pixel circuit 5 according to the brightness adjustment signal, and in the adjusting process, when the signal management unit 2 receives the second control signal, the second adjustment signal is output to the power control unit 3, so that the power control unit 3 controls the power management unit 4 to stop adjusting the power supply voltage of the pixel circuit 5, whereby the signal management unit 2 can indirectly control the timing of adjusting the data line voltage of the pixel circuit 5 and adjusting the power supply voltage of the pixel circuit 5, that is, when adjusting the data line voltage of the pixel circuit 5, stop or prohibit adjusting the power supply voltage of the pixel circuit 5, thereby avoiding the situation of adjusting the power consumption simultaneously in the brightness adjustment process, the brightness adjustment and the power consumption adjustment are orderly carried out, and the condition of brightness distortion of the display panel is reduced.
In an embodiment, the signal management unit 2 is further configured to output a third adjustment signal to the power control unit 3 after receiving the second control signal;
the power control unit 3 is further configured to receive a third adjustment signal, and control the power management unit 4 to adjust the power supply voltage of the pixel circuit 5 according to the third adjustment signal;
the signal management unit 2 is further configured to output a fourth adjustment signal to the data line control unit 1 after outputting the third adjustment signal and when receiving the first control signal within a preset time period;
the data line control unit 1 is further configured to stop adjusting the data line voltage of the pixel circuit 5 after receiving the fourth adjustment signal.
In this embodiment, when the power supply voltage of the pixel circuit 5 is adjusted, the adjustment of the data line voltage of the pixel circuit 5 is stopped or prohibited, so that the situation that the brightness adjustment is performed simultaneously in the power consumption adjustment process is avoided, the brightness adjustment and the power consumption adjustment are performed sequentially, and the situation of brightness distortion of the display panel is reduced.
In an embodiment, the signal management unit 2 is further configured to output a fifth adjustment signal to the power control unit 3 after receiving a third control signal, where the third control signal is output after the data line control unit 1 adjusts the voltage of the data line of the pixel circuit 5;
the power control unit 3 is further configured to control the power management unit 4 to adjust the supply voltage of the pixel circuit 5 after receiving the fifth adjustment signal.
In this embodiment, after the brightness adjustment is completed, the power management unit 4 is controlled to adjust the power supply voltage of the pixel circuit 5, so that the power consumption adjustment of the pixel circuit 5 is performed, and the brightness adjustment and the power consumption adjustment are performed in order.
In an embodiment, the signal management unit 2 is further configured to output a sixth adjustment signal to the data line control unit 1 after receiving a fourth control signal, where the fourth control signal is output after the power management unit 4 adjusts the power supply voltage of the pixel circuit 5;
the data line control unit 1 is further configured to adjust the data line voltage of the pixel circuit 5 after receiving the sixth adjustment signal.
In this embodiment, after the power consumption adjustment is completed, the power management unit 4 is controlled to adjust the data line voltage of the pixel circuit 5, so that the brightness adjustment is performed on the pixel circuit 5, and the brightness adjustment and the power consumption adjustment are performed in order.
In an embodiment, the second control signal includes a pulse number, the second adjustment signal includes a pulse number, and the power control unit 3 is specifically configured to, after receiving the second adjustment signal, control the power management unit 4 to output pulses according to the pulse number, so as to adjust the power supply voltage of the pixel circuit 5.
The supply voltage of the pixel circuit 5 is controllably adjusted in dependence on the number of pulses. Specifically, the power management unit 4 may be controlled to adjust the PWM signal or SPWM signal of the power management unit 4 according to the number of pulses, so that the power management unit 4 adjusts the power supply signal of the pixel circuit 5.
In this embodiment, the supply voltage of the pixel circuit 5 is adjusted according to the number of pulses, so that the control method is simple.
An embodiment of the present application further provides a brightness adjusting method, where the brightness adjusting circuit 100 is applied to a display panel, the brightness adjusting circuit 100 is respectively connected to the pixel circuit 5, the data line adjusting circuit, and the power management unit 4 of the display panel, and the brightness adjusting circuit 100 includes: the device comprises a data line control unit 1, a signal management unit 2 and a power supply control unit 3, wherein the signal management unit 2 is respectively connected with the data line control unit 1 and the power supply management unit 4, and the power supply control unit 3 is respectively connected with the signal management unit 2 and the power supply management unit 4. The method can be applied to the signal management unit 2 of the brightness adjusting circuit 100 for signal management, so as to realize the time sequence control of brightness adjustment and power adjustment. Specifically, as shown in fig. 3, the brightness adjustment method includes:
s110: receiving a first control signal, wherein the first control signal is sent out when the data line control unit 1 receives a brightness adjusting signal output by the data line adjusting circuit;
s120: outputting a first adjustment signal to the data line control unit 1 to enable the data line control unit 1 to adjust the data line voltage of the pixel circuit 5 according to the brightness adjustment signal;
s130: after the first adjustment signal is output and when the second control signal is received within the preset time period, the second adjustment signal is output to the power control unit 3, so that the power control unit 3 controls the power management unit 4 to stop adjusting the power supply voltage of the pixel circuit 5 according to the second adjustment signal, wherein the second control signal is sent when the power management unit 4 receives the power supply voltage adjustment signal of the pixel circuit 5.
In an embodiment, as shown in fig. 4, the brightness adjusting method further includes:
s210: receiving a second control signal;
s220: outputting a third adjustment signal to the power control unit 3, so that the power control unit 3 controls the power management unit 4 to adjust the power supply voltage of the pixel circuit 5 according to the third adjustment signal;
s230: after outputting the third adjustment signal and receiving the first control signal within the preset time period, the fourth adjustment signal is output to the data line control unit 1, so that the data line control unit 1 stops adjusting the data line voltage of the pixel circuit 5.
In an embodiment, as shown in fig. 5, the brightness adjusting method further includes:
s140: receiving a third control signal, which is output after the data line control unit 1 adjusts the data line voltage of the pixel circuit 5;
s150: the fifth adjustment signal is output to the power control unit 3, so that the power control unit 3 controls the power management unit 4 to adjust the power supply voltage of the pixel circuit 5 according to the fifth adjustment signal.
In an embodiment, as shown in fig. 6, the brightness adjusting method further includes:
s240: receiving a fourth control signal, which is output after the power management unit 4 finishes adjusting the power supply voltage of the pixel circuit 5;
s250: the sixth adjustment signal is output to the data line control unit 1 so that the data line control unit 1 adjusts the data line voltage of the pixel circuit 5 according to the sixth adjustment signal.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.
An embodiment of the present application further provides a display panel, which may include the brightness adjusting circuit 100.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (10)
1. A brightness adjusting circuit is applied to a display panel, and the brightness adjusting circuit is respectively connected with a pixel circuit, a data line adjusting circuit and a power management unit of the display panel, and the circuit is characterized by comprising: the device comprises a data line control unit, a signal management unit and a power supply control unit;
the data line control unit is used for outputting a first control signal after receiving the brightness adjusting signal output by the data line adjusting circuit;
the signal management unit is respectively connected with the data line control unit and the power management unit and is used for outputting a first adjusting signal to the data line control unit after receiving a first control signal;
the data line control unit is also used for adjusting the data line voltage of the pixel circuit according to the brightness adjusting signal after receiving the first adjusting signal;
the power supply management unit is used for outputting a second control signal after receiving a power supply voltage adjusting signal of the pixel circuit;
the signal management unit is further used for outputting a second adjusting signal to the power supply control unit after the first adjusting signal is output and when a second control signal is received within a preset time period;
and the power supply control unit is respectively connected with the signal management unit and the power supply management unit and is used for receiving the second adjusting signal and controlling the power supply management unit to stop adjusting the power supply voltage of the pixel circuit according to the second adjusting signal.
2. The brightness adjustment circuit of claim 1, wherein:
the signal management unit is also used for outputting a third adjusting signal to the power supply control unit after receiving a second control signal;
the power supply control unit is further configured to receive the third adjustment signal, and control the power supply management unit to adjust the power supply voltage of the pixel circuit according to the third adjustment signal;
the signal management unit is further configured to output a fourth adjustment signal to the data line control unit after the third adjustment signal is output and when the first control signal is received within a preset time period;
the data line control unit is further used for stopping adjusting the data line voltage of the pixel circuit after receiving the fourth adjusting signal.
3. The luminance adjusting circuit as claimed in claim 1, wherein the signal managing unit is further configured to output a fifth adjusting signal to the power control unit after receiving a third control signal, the third control signal being output after the data line control unit has adjusted the voltage of the data line of the pixel circuit;
and the power supply control unit is also used for controlling the power supply management unit to adjust the power supply voltage of the pixel circuit after receiving the fifth adjusting signal.
4. The luminance regulating circuit according to claim 2, wherein the signal managing unit is further configured to output a sixth adjustment signal to the data line controlling unit after receiving a fourth control signal, the fourth control signal being output after the power managing unit has adjusted the supply voltage to the pixel circuit;
the data line control unit is further used for adjusting the data line voltage of the pixel circuit after receiving the sixth adjusting signal.
5. The brightness adjusting circuit according to claim 1, wherein the second control signal includes a number of pulses, the second adjusting signal includes the number of pulses, and the power supply control unit is specifically configured to, after receiving the second adjusting signal, control the power supply management unit to perform pulse output according to the number of pulses to adjust the supply voltage of the pixel circuit.
6. A brightness adjusting method is applied to a brightness adjusting circuit of a display panel, the brightness adjusting circuit is respectively connected with a pixel circuit, a data line adjusting circuit and a power management unit of the display panel, and the brightness adjusting circuit comprises: the power supply control device comprises a data line control unit, a signal management unit and a power supply control unit, wherein the signal management unit is respectively connected with the data line control unit and the power supply management unit, and the power supply control unit is respectively connected with the signal management unit and the power supply management unit;
the brightness adjusting method is characterized by comprising the following steps:
receiving a first control signal, wherein the first control signal is sent out when the data line control unit receives a brightness adjusting signal output by the data line adjusting circuit;
outputting a first adjusting signal to the data line control unit to enable the data line control unit to adjust the data line voltage of the pixel circuit according to the brightness adjusting signal;
after the first adjusting signal is output and when a second control signal is received within a preset time period, a second adjusting signal is output to the power supply control unit, so that the power supply control unit controls the power supply management unit to stop adjusting the power supply voltage of the pixel circuit according to the second adjusting signal, wherein the second control signal is sent when the power supply management unit receives the power supply voltage adjusting signal of the pixel circuit.
7. The luminance adjustment method as claimed in claim 6, wherein the method further comprises:
receiving a second control signal;
outputting a third adjusting signal to the power control unit to enable the power control unit to control the power management unit to adjust the power supply voltage of the pixel circuit according to the third adjusting signal;
and after the third adjusting signal is output and the first control signal is received within a preset time period, outputting a fourth adjusting signal to the data line control unit so that the data line control unit stops adjusting the data line voltage of the pixel circuit.
8. The luminance adjustment method as claimed in claim 6, wherein the method further comprises:
receiving a third control signal, wherein the third control signal is output after the data line control unit finishes adjusting the voltage of the data line of the pixel circuit;
and outputting a fifth adjusting signal to the power supply control unit so that the power supply control unit controls the power supply management unit to adjust the power supply voltage of the pixel circuit according to the fifth adjusting signal.
9. The luminance adjustment method as claimed in claim 7, wherein the method further comprises:
receiving a fourth control signal, wherein the fourth control signal is output after the power supply management unit finishes adjusting the power supply voltage of the pixel circuit;
and outputting a sixth adjusting signal to the data line control unit so that the data line control unit adjusts the data line voltage of the pixel circuit according to the sixth adjusting signal.
10. A display panel characterized in that the display panel comprises the luminance adjustment circuit as claimed in any one of claims 1 to 5.
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| CN202110943097.XA CN113674686B (en) | 2021-08-17 | 2021-08-17 | Brightness adjusting circuit, brightness adjusting method and display panel |
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| CN202110943097.XA CN113674686B (en) | 2021-08-17 | 2021-08-17 | Brightness adjusting circuit, brightness adjusting method and display panel |
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| CN113674686B (en) | 2022-06-24 |
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