CN114822417B - Display device and control method thereof - Google Patents

Display device and control method thereof Download PDF

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Publication number
CN114822417B
CN114822417B CN202210492547.2A CN202210492547A CN114822417B CN 114822417 B CN114822417 B CN 114822417B CN 202210492547 A CN202210492547 A CN 202210492547A CN 114822417 B CN114822417 B CN 114822417B
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China
Prior art keywords
driving
display
signal line
module
driving module
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CN202210492547.2A
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Chinese (zh)
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CN114822417A (en
Inventor
刘亚辉
唐韬
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Kunshan Govisionox Optoelectronics Co Ltd
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Kunshan Govisionox Optoelectronics Co Ltd
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Priority to CN202210492547.2A priority Critical patent/CN114822417B/en
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • 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
    • G09G3/3258—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 voltage across the light-emitting element
    • 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
    • G09G3/2007—Display of intermediate tones
    • G09G3/2074—Display of intermediate tones using sub-pixels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0264—Details of driving circuits
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02—Details of power systems and of start or stop of display operation
    • G09G2330/021—Power management, e.g. power saving

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

The embodiment of the invention discloses a display device and a control method thereof. The display device comprises a display panel and a display driving module; the display panel comprises a detection signal line and a driving signal line, one end of the driving signal line is connected with the display driving module, and the other end of the driving signal line is directly or indirectly connected with the other end of the detection signal line; the display driving module is used for transmitting target voltage to the driving signal line so that the target voltage is transmitted to the detection signal line through the driving signal line, and adjusting the driving capability of the display driving module for outputting driving signals to the driving signal line according to the time required by the voltage transmitted to the display driving module by the detection signal line to reach the target voltage. The technical scheme of the embodiment of the invention is beneficial to reducing the power consumption of the display device while ensuring the display effect of the display device.

Description

Display device and control method thereof
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a display device and a control method thereof.
Background
With the continuous development of display technology, performance requirements of display devices are increasing. The display device comprises a display panel, wherein a plurality of sub-pixel units and a plurality of driving signal lines are arranged in the display panel, and the display device transmits driving signals to the sub-pixel units through the driving signal lines. Since there is a load on the driving signal line, the load has an influence on the transmission of the driving signal, and the actual value of the load of the driving signal line is different from the design value, the display effect is deteriorated when the load on the driving signal line is large, and the power consumption of the display device is increased when the load on the driving signal line is small. In summary, it is difficult for the existing display device to reduce power consumption while ensuring display effects.
Disclosure of Invention
The embodiment of the invention provides a display device and a control method thereof, which are used for realizing the adjustment of the driving capability of a display driving module according to the actual load of a driving signal wire in the display device, and reducing the power consumption of the display device while ensuring the display effect of the display device.
In a first aspect, an embodiment of the present invention provides a display apparatus, including: a display panel and a display driving module;
the display panel comprises a detection signal line and a driving signal line, one end of the driving signal line and one end of the detection signal line are connected with the display driving module, and the other end of the driving signal line and the other end of the detection signal line are directly or indirectly connected;
the display driving module is used for transmitting target voltage to the driving signal line so that the target voltage is transmitted to the detection signal line through the driving signal line, and adjusting the driving capability of the display driving module for outputting driving signals to the driving signal line according to the time required by the voltage transmitted to the display driving module by the detection signal line to reach the target voltage.
Optionally, in a case where the other end of the driving signal line and the other end of the detecting signal line are indirectly connected, the display panel further includes a switching module;
The other end of the driving signal line is connected with the other end of the detection signal line through the switch module, the control end of the switch module is connected with the display driving module, and the switch module is used for connecting or disconnecting the driving signal line and the detection signal line;
the display driving module is also used for controlling the switch module to be turned on or turned off so as to transmit a target voltage to the driving signal line when the switch module is turned on, so that the target voltage is transmitted to the detection signal line through the driving signal line;
preferably, the switching module includes a transistor, a first pole of the transistor is connected to the driving signal line, a second pole of the transistor is connected to the detecting signal line, and a gate of the transistor is connected to the display driving module.
Optionally, the adjusting the driving capability of the display driving module to output the driving signal to the driving signal line includes:
when the time required by the voltage transmitted to the display driving module by the detection signal line to reach the target voltage is smaller than the target time, reducing the driving capability of the display driving module to output a driving signal to the driving signal line until the time required by the voltage transmitted to the display driving module by the detection signal line to reach the target voltage is equal to the target time;
When the time required by the voltage transmitted to the display driving module by the detection signal line to reach the target voltage is longer than the target time, the driving capability of the display driving module for outputting a driving signal to the driving signal line is increased until the time required by the voltage transmitted to the display driving module by the detection signal line to reach the target voltage is equal to the target time;
preferably, the target time is a time for which the display device satisfies a preset display effect and preset power consumption.
Optionally, the driving signal lines are provided with a plurality of driving signal lines, wherein the first driving signal line and the second driving signal line are two of the driving signal lines, and the second driving signal line is multiplexed into the detection signal line;
preferably, the driving signal line includes a data line and/or a scan line;
preferably, when the first driving signal line is a scanning line, the display device further includes a scanning driving module, the display driving module is connected to the first driving signal line through the scanning driving module, and the display driving module is further configured to:
and outputting a control signal to the scanning driving module, so that the scanning driving module responds to the control signal to transmit a target voltage to the first driving signal line, and adjusting the driving capability of the display driving module to output the control signal to the scanning driving module according to the time required by the voltage transmitted to the display driving module by the detection signal line to reach the target voltage.
Optionally, the display driving module includes an analog-to-digital conversion unit, where the analog-to-digital conversion unit is connected to the detection signal line, and the analog-to-digital conversion unit is configured to collect a voltage on the detection signal line, and obtain a time required for the voltage transmitted by the detection signal line to the display driving module to reach the target voltage;
and/or the display driving module comprises a driving amplifier, and the display driving module outputs a driving signal to the driving signal line through the driving amplifier and adjusts the driving capability of the display driving module for outputting the driving signal to the driving signal line through the driving amplifier.
Optionally, the display driving module is further configured to:
acquiring average values of optimal driving capability values of a plurality of target display devices for outputting driving signals to a driving signal line in a preset display mode, determining the average values of the optimal driving capability values as preset driving capability values of the display driving module for outputting the driving signals to the driving signal line in the preset display mode, and outputting the driving signals to the driving signal line through the display driving module in the preset driving capability values when the display devices are displayed in the preset display mode;
Preferably, the optimal driving capability value is a driving capability value that enables the display device to meet a preset display effect.
Optionally, the display device includes a plurality of display modes, and a voltage range of the driving signal corresponding to each display mode includes a minimum voltage value and a maximum voltage value;
the display driving module is further configured to transmit a target voltage to the driving signal line, and adjust a driving capability of the display driving module to output a driving signal to the driving signal line in each display mode according to a time required for the voltage transmitted to the display driving module by the detection signal line to reach the maximum voltage value from the minimum voltage value corresponding to each display mode, so that the display driving module outputs the driving signal to the driving signal line with the driving capability corresponding to the display mode.
In a second aspect, an embodiment of the present invention further provides a method for controlling a display device, where the display device includes: a display panel and a display driving module; the display panel comprises a detection signal line and a driving signal line, one end of the driving signal line and one end of the detection signal line are connected with the display driving module, and the other end of the driving signal line and the other end of the detection signal line are directly or indirectly connected;
The control method of the display device comprises the following steps:
and transmitting a target voltage to the driving signal line through the display driving module so that the target voltage is transmitted to the detection signal line through the driving signal line, and adjusting the driving capability of the display driving module for outputting a driving signal to the driving signal line according to the time required for the voltage transmitted to the display driving module by the detection signal line to reach the target voltage.
Optionally, the adjusting the driving capability of the display driving module to output the driving signal to the driving signal line includes:
when the time required by the voltage transmitted to the display driving module by the detection signal line to reach the target voltage is smaller than the target time, reducing the driving capability of the display driving module for outputting a driving signal to the driving signal line until the time required by the voltage transmitted to the display driving module by the detection signal line to reach the target voltage is equal to the target time;
when the time required by the voltage transmitted to the display driving module by the detection signal line to reach the target voltage is longer than the target time, the driving capability of the display driving module for outputting a driving signal to the driving signal line is increased until the time required by the voltage transmitted to the display driving module by the detection signal line to reach the target voltage is equal to the target time;
Preferably, the target time is a time for which the display device satisfies a preset display effect and preset power consumption.
Optionally, the display device includes a plurality of display modes, and a voltage range of the driving signal corresponding to each display mode includes a minimum voltage value and a maximum voltage value; the control method of the display device further includes: transmitting a target voltage to the driving signal line through the display driving module, and adjusting the driving capability of the display driving module to output a driving signal to the driving signal line in each display mode according to the time required for the voltage transmitted to the display driving module by the detection signal line to reach the maximum voltage value from the minimum voltage value corresponding to each display mode, so that the display driving module outputs the driving signal to the driving signal line with the driving capability corresponding to the display mode;
and/or, the control method of the display device further comprises: acquiring average values of optimal driving capability values of driving signals output to driving signal lines by a plurality of target display devices in a preset display mode through the display driving module, determining the average values of the optimal driving capability values as preset driving capability values of the driving signals output to the driving signal lines by the display driving module in the preset display mode, and outputting driving signals to the driving signal lines by the display driving module in the preset driving capability values when the display devices are displayed in the preset display mode;
Preferably, the optimal driving capability value is a driving capability value that enables the display device to meet a preset display effect.
According to the display device and the control method thereof, one end of the first driving signal line and one end of the detection signal line are connected with the display driving module, and the other end of the first driving signal line is connected with the other end of the detection signal line through the switch module, so that target voltage output by the display driving module to the first driving signal line can be transmitted back to the display driving module through the first driving signal line, the switch module and the detection signal line, the display driving module can monitor the change time of the voltage transmitted by the driving signal line, whether the actual load value of the driving signal line is matched with the current driving capability of the display driving module or not is determined, and accordingly the driving capability of the display driving module is adjusted, the display device is beneficial to avoiding the increase of power consumption caused by the excessively strong driving capability of the display driving module and the influence on the display effect caused by the excessively weak driving capability of the display driving module. Therefore, the scheme not only realizes the adjustment of the driving capability of the display driving module according to the actual load of the driving signal line in the display device, but also helps to reduce the power consumption of the display device while ensuring the display effect of the display device.
It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a voltage waveform on a drive signal line in the prior art;
fig. 2 is a schematic structural diagram of a display device according to an embodiment of the present invention;
FIG. 3 is a schematic diagram showing a relationship between voltage and time transmitted from a detection signal line to a display driving module according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another display device according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of another display device according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of another display device according to an embodiment of the present invention;
Fig. 7 is a flowchart of a control method of a display device according to an embodiment of the present invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
As described in the background art, it is difficult to reduce power consumption while ensuring display effects in the existing display device. The inventors found that the above problems occur for the following reasons:
the display device comprises a display panel and a display driving module, wherein a plurality of sub-pixel units and a plurality of driving signal lines are arranged in the display panel, and the display driving module transmits driving signals to the sub-pixel units through the driving signal lines so as to control the sub-pixel units to emit light for display. Fig. 1 is a schematic diagram of voltage waveforms on a driving signal line in the prior art. Illustratively, referring to fig. 1, at stage t0, the voltage on the drive signal line is an initial voltage V0. In the t1 stage, the display driving module outputs a driving signal to the driving signal line. Since the driving signal line has a resistor and parasitic capacitance exists between the driving signal line and the metal layer in the display panel, the voltage on the driving signal line cannot jump to the preset voltage V1 corresponding to the driving signal (as shown by the dotted line waveform) immediately, but slowly rises to the preset voltage V1 (as shown by the solid line waveform). In the stage t1, the longer the voltage on the driving signal line is the preset voltage V1, the more fully the driving signal is written, and the better the corresponding display effect is.
The voltage rising speed on the driving signal line is determined by the resistance and capacitance load on the driving signal line and the capability of the display driving module to output the driving signal (hereinafter simply referred to as the driving capability of the display driving module). The design values of the resistor and the capacitor load on the driving signal line are usually fixed in the design stage of the display panel, and the voltage rising speed on the driving signal line can be accelerated by increasing the driving capability of the display driving module, so that the driving signal writing is more sufficient, and the display effect is better. However, the larger the driving capability of the display driving module is, the better, meaning the higher the power consumption of the display driving module.
In the prior art, design values of the resistive and capacitive loads on the driving signal lines are generally obtained in a design stage of the display panel, and driving capability of the display driving module is set accordingly for mass production. However, there is a difference between the actual value and the design value of the load on the driving signal line, and the driving capability of the display driving module cannot be set according to the actual parameter of each display panel in the prior art. If the actual value of the load on the driving signal line is larger, the display effect is poor due to insufficient driving capability of the display driving module; if the actual value of the load on the driving signal line is smaller, there is a problem that the power consumption of the display driving module is too large due to the too strong driving capability of the display driving module. Therefore, it is difficult for the existing display device to reduce power consumption while ensuring display effect.
In view of the foregoing, embodiments of the present invention provide a display device. Fig. 2 is a schematic structural diagram of a display device according to an embodiment of the invention. Referring to fig. 2, the display device includes a display panel 10 and a display driving module 20.
The display panel 10 includes a detection signal line 40 and a driving signal line 50. The first end of the driving signal line 50 and the first end of the detecting signal line 40 are both connected to the display driving module 20, and the second end of the driving signal line 50 and the second end of the detecting signal line 40 are directly or indirectly connected.
The display driving module 20 is configured to transmit a target voltage to the driving signal line 50, so that the target voltage is transmitted to the detection signal line 40 through the driving signal line 50, and adjust the driving capability of the display driving module 20 to output a driving signal to the driving signal line 50 according to the time required for the voltage transmitted to the display driving module 20 by the detection signal line 40 to reach the target voltage.
Specifically, the display panel 10 may be an Organic Light-Emitting Diode (OLED) display panel or an Active-matrix Organic Light-Emitting Diode (AMOLED) display panel, or the like. The display panel 10 includes a plurality of sub-pixel units PX arranged in an array, and each sub-pixel unit PX includes a pixel circuit connected to the light emitting device in the display panel 10 to drive the light emitting device to emit light.
The display driving module 20 may be a display driving chip (Display Driver Integrated Circuit, DDIC), which is illustrated in fig. 2 in a case where the display driving module 20 is disposed on the display panel 10, for example, the display driving module 20 may be bonded on the display panel 10, and in other embodiments, the display driving module 20 may also be disposed on a flexible circuit board to connect the display panel 10 and the switch module 30, the detection signal line 40, the plurality of driving signal lines 50, and the like therein through the flexible circuit board.
The display driving module 20 has a plurality of driving signal output terminals, each driving signal line 50 is connected to the driving signal output terminal of the display driving module 20 and is connected to a row or a column of sub-pixel units PX in the display panel 10, fig. 2 only shows a case where each driving signal line 50 is connected to a column of sub-pixel units PX, and in other embodiments, each driving signal line 50 may be connected to a row of sub-pixel units PX. The display driving module 20 can transmit a driving signal to the pixel circuits in the sub-pixel unit PX through the driving signal line 50 to cause the pixel circuits to drive the light emitting devices to emit light in response to the driving signal.
The driving signal line 50 itself has a resistance, and parasitic capacitance exists between the driving signal line 50 and the metal layer in the display panel 10, and thus, the resistance and capacitive load of the driving signal line 50 affect the voltage change time on the driving signal line. The driving capability of the display driving module 20 may be a capability of the display driving module 20 to output a current through its own driving signal output terminal. The stronger the driving capability of the display driving module 20, the greater the current of the driving signal outputted from the display driving module 20 to the driving signal line 50, the faster the voltage rising speed on the driving signal line; the weaker the driving capability of the display driving module 20, the smaller the current of the driving signal outputted from the display driving module 20 to the driving signal line 50, the slower the voltage rising speed on the driving signal line.
Fig. 2 shows only the case where the second end of the driving signal line 50 and the second end of the detecting signal line 40 are connected, but in other embodiments, the second end of the driving signal line 50 and the second end of the detecting signal line 40 may be directly connected. Alternatively, in case that the second end of the driving signal line 50 and the second end of the sensing signal line 40 are connected in series, the display panel 10 may further include a switching module 30, the second end of the driving signal line 50 and the second end of the sensing signal line 40 are connected through the switching module 30,
the control end of the switch module 30 is connected to the display driving module 20, and the switch module 30 is used for connecting the driving signal line 50 and the detecting signal line 40 when being on, and disconnecting the driving signal line 50 and the detecting signal line 40 when being off. Accordingly, the display driving module 20 is further configured to control the switching module 30 to be turned on or off, so that the target voltage is transmitted to the driving signal line 50 when the switching module 30 is turned on, so that the target voltage is transmitted to the detecting signal line 40 through the driving signal line 50.
The second end of the driving signal line 50 and the second end of the detecting signal line 40 are connected through the switch module 30 will be described as an example. For example, in a debugging stage, for example, after the display device is produced and before the display device is put into use, the initial driving capability of the display driving module 20 may be set according to the design values of the resistance and capacitance loads of the driving signal line 50 when the display device is powered up for the first time. Then, the switching module 30 is controlled to be turned on by the display driving module 20, so that the driving signal line 50 and the detection signal line 40 are communicated by the switching module 30, and a target voltage is output to the driving signal line 50 by the display driving module 20, and the voltage can be transmitted back to the display driving module 20 through the driving signal line 50, the switching module 30 and the detection signal line 40.
The time required for the voltage transmitted from the detection signal line 40 to the display driving module 20 to reach the target voltage can reflect whether the actual values of the resistive and capacitive loads of the driving signal line 50 are adapted to the current initial driving capability of the display driving module 20. For example, when the time required for detecting that the voltage transmitted from the signal line 40 to the display driving module 20 reaches the target voltage is short, it is indicated that the initial driving capability of the display driving module 20 is strong for the actual load value of the driving signal line 50 in the display device, so as to avoid the driving capability of the display driving module 20 being too strong to increase the power consumption, and the driving capability of the display driving module 20 can be reduced. When the time required for detecting that the voltage transmitted from the signal line 40 to the display driving module 20 reaches the target voltage is longer, it is indicated that the initial driving capability of the display driving module 20 is weaker for the actual load value of the driving signal line 50 in the display device, so as to avoid the influence on the display effect caused by the current weak driving capability of the display driving module 20, and enhance the driving capability of the display driving module 20.
According to the technical scheme, one end of the driving signal wire and one end of the detection signal wire are both connected with the display driving module, and the other end of the driving signal wire is directly or indirectly connected with the other end of the detection signal wire, so that target voltage output by the display driving module to the driving signal wire can be transmitted back to the display driving module through the driving signal wire and the detection signal wire, the display driving module can monitor the change time of the voltage transmitted by the driving signal wire, whether the actual load value of the driving signal wire is matched with the current driving capability of the display driving module or not is determined, and accordingly the driving capability of the display driving module is adjusted, the driving capability of the display driving module is prevented from being excessively strong to increase power consumption, and the driving capability of the display driving module is prevented from being excessively weak to influence the display effect. Therefore, the scheme not only realizes the adjustment of the driving capability of the display driving module according to the actual load of the driving signal line in the display device, but also helps to reduce the power consumption of the display device while ensuring the display effect of the display device.
With continued reference to fig. 2, in the above embodiment, optionally, a specific manner in which the display driving module 20 adjusts the driving capability of the display driving module 20 to output the driving signal to the driving signal line 50 may include: when the time required for the voltage transmitted from the detection signal line 40 to the display driving module 20 to reach the target voltage is less than the target time, the driving capability of the display driving module 20 to output the driving signal to the driving signal line 50 is reduced until the time required for the voltage transmitted from the detection signal line 40 to the display driving module 20 to reach the target voltage is equal to the target time; when the time required for the voltage transmitted to the display driving module 20 by the detection signal line 40 to reach the target voltage is greater than the target time, the driving capability of the display driving module 20 to output the driving signal to the driving signal line 50 is increased until the time required for the voltage transmitted to the display driving module 20 by the detection signal line 40 to reach the target voltage is equal to the target time.
The target time may be set in combination with the requirement of the target voltage, for example, the target time may be a time that can enable the display device to meet the preset display effect and the preset power consumption, which specifically means that when the time required for detecting that the voltage transmitted to the display driving module 20 by the signal line 40 reaches the target voltage is the target time, the current driving capability of the display driving module 20 is used to output the driving signal to the driving signal line 50, so that the pixel circuit drives the light emitting device to emit light, not only can enable the display effect of the display device to reach the preset display effect, but also can enable the power consumption of the display driving module 20 to be the preset power consumption. The preset display effect and the preset power consumption can be set according to the requirement, for example, the preset display effect and the preset power consumption can be simultaneously satisfied to make the display effect of the display device better, and the power consumption of the display driving module 20 is not excessive.
Fig. 3 is a schematic diagram of a voltage versus time relationship between a detection signal line and a display driving module according to an embodiment of the invention. The horizontal axis T represents time, the vertical axis a represents the voltage transmitted from the detection signal line to the display driving module, L is a curve when the time required for the voltage transmitted from the detection signal line 40 to the display driving module 20 to reach the target voltage a is the target time T, L1 is a curve when the time required for the voltage transmitted from the detection signal line 40 to the display driving module 20 to reach the target voltage a is less than the target time T, and L2 is a curve when the time required for the voltage transmitted from the detection signal line 40 to the display driving module 20 to reach the target voltage a is greater than the target time T.
Referring to fig. 2 and 3, for example, if the time T1 required for the voltage transmitted to the display driving module 20 by the detection signal line 40 to reach the target voltage a is less than the target time T, it indicates that the initial driving capability of the display driving module 20 is set to be strong for the actual load value of the driving signal line 50 in the display device, and the power consumption of the display driving module 20 is increased although the display effect can be improved. Therefore, the current driving capability of the display driving module 20 can be gradually reduced, the time required for the voltage transmitted to the display driving module 20 by the detection signal line 40 to reach the target voltage a can be gradually prolonged, and when the time reaches the target time T, the current driving capability of the display driving module 20 can meet the display effect requirement without causing excessive power consumption.
Similarly, if the time T2 required for the voltage transmitted by the detection signal line 40 to the display driving module 20 to reach the target voltage a is less than the target time T, it indicates that the initial driving capability of the display driving module 20 is set weak for the actual load value of the driving signal line 50 in the display device, and the current power consumption of the display driving module 20 is small, but the display effect is affected. Therefore, the current driving capability of the display driving module 20 can be gradually increased, the time required for the voltage transmitted to the display driving module 20 by the detection signal line 40 to reach the target voltage a can be gradually shortened, and when the time reaches the target time T, the current driving capability of the display driving module 20 can meet the display effect requirement without causing excessive power consumption.
The corresponding driving capability is set to the driving capability of the display driving module 20 when the time required for the voltage transmitted to the display driving module 20 by the detection signal line 40 to reach the target voltage A is equal to the target time T, so that the optimal driving capability of the display driving module 20 is obtained, the subsequent debugging and code burning of the display device are performed by the driving capability, and the power consumption of the display device is reduced while the display effect of the display device is ensured.
Fig. 4 is a schematic structural diagram of another display device according to an embodiment of the present invention. Referring to fig. 4, optionally, the switching module 30 includes a transistor T1, a first pole of the transistor T1 is connected to the driving signal line 50, a second pole of the transistor T1 is connected to the detecting signal line 40, and a gate of the transistor T1 is connected to the display driving module 20. The display driving module 20 can output a signal to the gate of the transistor T1 to control the transistor T1 to be turned on or off. Fig. 4 only shows the case where the transistor T1 is a P-type transistor, and in other embodiments, the transistor T1 may also be an N-type transistor, and the type of the transistor T1 is not limited in this embodiment. The transistor T1 may be provided in a display region of the display panel 10 or in a non-display region of the display panel 10, and the area where the transistor T1 is provided is not limited in this embodiment as long as the display effect is not affected.
With continued reference to fig. 4, the number of the driving signal lines 50 may be plural, for example, the first driving signal line 510 and the second driving signal line 520 may be any two of the plural driving signal lines 50, the driving signal line 50 directly or indirectly connected to the second end of the detecting signal line 40 in the above embodiment may be the first driving signal line 510, and the second driving signal line 520 may be multiplexed into the detecting signal line 40. Specifically, the second driving signal line 520 may be a driving signal line other than the first driving signal line 510 among the driving signal lines. For example, the second driving signal line 520 is a driving signal line adjacent to the first driving signal line 510, which has advantages in that the transistor T1 is convenient to connect the first driving signal line 510 and the second driving signal line 520 and shortens the distance between the first driving signal line 510 and the second driving signal line 520 to avoid that the distance between the first driving signal line 510 and the second driving signal line 520 is too far to affect the transmission of the target voltage. According to the technical scheme of the embodiment of the invention, the second driving signal line 520 is multiplexed into the detection signal line 40, so that the detection signal line 40 does not need to be additionally arranged in the display panel 10, and the wiring space of the display panel 10 is saved.
With continued reference to fig. 4, optionally, the display driving module 20 includes an analog-to-digital conversion unit 210, where the analog-to-digital conversion unit 210 is connected to the detection signal line 40, and the analog-to-digital conversion unit 210 is configured to collect the voltage on the detection signal line 40 and obtain the time required for the voltage transmitted by the detection signal line 40 to the display driving module 20 to reach the target voltage. Specifically, the Analog-to-digital conversion unit 210 may be an Analog-to-Digital Converter (ADC), and the Analog-to-digital conversion unit 210 can collect an Analog voltage signal on the detection signal line 40 in real time, convert the Analog voltage signal into a digital signal, and obtain a time-varying relationship of the voltage transmitted to the display driving module 20 by the detection signal line 40, so that the display driving module 20 can determine a time required for the voltage transmitted to the display driving module 20 by the detection signal line 40 to reach a target voltage and a target time.
Fig. 5 is a schematic structural diagram of another display device according to an embodiment of the present invention. Referring to fig. 5, optionally, the display driving module 20 further includes a data driving unit 220, the data driving unit 220 includes a driving amplifier 221, the display driving module 20 outputs a driving signal to the driving signal line 50 via the driving amplifier 221, and adjusts a driving capability of the display driving module 20 to output the driving signal to the driving signal line 50 through the driving amplifier 221.
Illustratively, the display driving module 20 processes an image data signal to be displayed after acquiring the image data signal, and transmits the processed image data signal to the data driving unit 220. The data driving unit 220 may perform shift registering, latching, etc. of the received image data signal, then convert the processed image data signal into a corresponding analog voltage signal, and output the analog voltage signal to the driving amplifier 221. The driving amplifier 221 can amplify the current value of the analog voltage signal to obtain a driving signal, and the display driving module 20 can output the driving signal to the driving signal line 50 through the driving amplifier 221. By adjusting the degree to which the drive amplifier 221 amplifies the current value of the analog voltage signal, the driving capability of the display driving module 20 to output the driving signal to the driving signal line 50 can be adjusted. For example, the driving capability of the display driving module 20 may be reduced when the degree of amplification of the current value of the analog voltage signal by the driving amplifier 221 is reduced, and the driving capability of the display driving module 20 may be improved when the degree of amplification of the current value of the analog voltage signal by the driving amplifier 221 is increased.
The current value of the driving signal obtained by amplifying the analog voltage signal by the driving amplifier 221 may include a maximum current value and a minimum current value, and the driving amplifier 221 may amplify the current value of the analog voltage signal to a current value between the minimum current value and the maximum current value. When the current value of the driving signal currently output to the driving signal line 50 by the display driving module 20 has reached the maximum current value, the driving amplifier 221 cannot continue to increase the degree to which it amplifies the current value of the analog voltage signal, and when the current value of the driving signal currently output to the driving signal line 50 by the display driving module 20 has reached the minimum current value, the driving amplifier 221 cannot continue to decrease the degree to which it amplifies the current value of the analog voltage signal.
With continued reference to fig. 5, the driving signal lines 50 include data lines on the basis of the above-described embodiments. When each driving signal line 50 is a data line, the first driving signal line 510 and the second driving signal line 520 are both data lines, the driving signal output from the display driving module 20 to the driving signal line 50 is a data voltage signal, and the driving signal line 50 can transmit the data voltage signal to the pixel circuit in the corresponding sub-pixel unit PX, so that the pixel circuit drives the light emitting device to emit light with corresponding brightness according to the received data voltage signal.
With continued reference to fig. 5, optionally, in one embodiment, the display drive module 20 is further configured to: the average value of the optimal driving capability values for outputting the driving signals to the driving signal lines 50 in the preset display mode of the plurality of target display devices is obtained, the average value of the optimal driving capability values is determined as the preset driving capability value for outputting the driving signals to the driving signal lines 50 in the preset display mode of the display driving module 20, and when the display devices display in the preset display mode, the driving signals are output to the driving signal lines 50 in the preset driving capability value through the display driving module 20.
The target display device may be a display device produced in the same batch as the display device to be debugged. The preset display modes may comprise different display modes of the display device, for example, the preset display modes comprise a screen-off display (Always on Display, AOD) mode. In the normal display mode, the driving capability value of the display driving module 20 may be adjusted according to the technical solutions of the above embodiments. The display screen in the AOD mode is relatively simple and requires less display effect, so the driving capability value of the display driving module 20 in the AOD mode may be a different value from that in the normal display mode. Optionally, the optimal driving capability value is a driving capability value that enables the display device to satisfy a preset display effect. For example, when the preset display mode is the AOD mode, the preset display effect may be that when the display device performs gray-scale switching with a white screen, the smoothness of the display screen during gray-scale switching satisfies the display effect corresponding to the preset smoothness, and the preset smoothness may be set according to the requirement.
For example, in the debugging stage, a plurality of target display devices may be prepared, the driving capability of the display driving module 20 is adjusted according to the display effect of each target display device in the AOD mode to determine an optimal driving capability value of the display driving module 20 in each target display device in the AOD mode, and an average value of the optimal driving capability values of the display driving modules 20 in the respective target display devices is set as a preset driving capability value of the display driving module 20 in the display device to be debugged in the AOD display mode. In this way, when the display mode of the display device is switched to the AOD mode, the display driving module 20 may automatically invoke the preset driving capability value in the AOD display mode to output the driving signal to the driving signal line 50 according to the preset driving capability value. According to the technical scheme provided by the embodiment of the invention, the driving capability value of the display driving module 20 is set according to the display mode of the display device, so that the display driving module is beneficial to adapting to the display effects of different display modes, and meanwhile, the power consumption of the display driving module 20 is reduced.
With continued reference to fig. 5, optionally, in another embodiment, the display device includes a plurality of display modes, and voltage ranges of driving signals corresponding to the different display modes are different, and each voltage range of the driving signal corresponding to the display mode includes a minimum voltage value and a maximum voltage value; the display driving module 20 is further configured to transmit a target voltage to the first driving signal line 510 when the control switch module 30 is turned on, and adjust the driving capability of the display driving module 20 to output a driving signal to the driving signal line 50 in each display mode according to the time required for the voltage transmitted to the display driving module 20 by the detection signal line 40 to reach the maximum voltage value from the minimum voltage value corresponding to each display mode, so that the display driving module 20 outputs the driving signal to the driving signal line 50 with the driving capability corresponding to the display mode.
The following description will be given by taking the example in which the driving signal line 50 is a data line, the driving signal transmitted to the driving signal line 50 by the display driving module 20 is a data voltage signal, and the voltage range of the driving signal corresponding to the display mode is the voltage range of the data voltage signal. The display modes of the display device may be different brightness modes, for example. The maximum brightness values of the different brightness modes are different, so that the brightness ranges of the different brightness modes are different, and the voltage ranges of the data voltage signals corresponding to the different brightness modes are also different. When the voltage ranges of the data voltage signals are different, the voltage change time on the data line is different, so that the driving capability of the display driving module 20 in the corresponding brightness mode needs to be adjusted according to the voltage range of the data voltage signal corresponding to each brightness mode.
In the debugging stage, the switch module 30 is controlled to be turned on by the display driving module 20, and meanwhile, a target voltage is transmitted to the first driving signal line 510, wherein the target voltage can be a maximum voltage value in a voltage range of a data voltage signal corresponding to a currently adjusted brightness mode, so that the driving capability of the display driving module 20 in the brightness mode is adjusted according to the time required for the voltage transmitted to the display driving module 20 by the detection signal line 40 to reach the maximum voltage value from a minimum voltage value in the voltage range of the data voltage signal corresponding to the brightness mode. The driving capability of the display driving module 20 to output driving signals to the driving signal line 50 in various brightness modes is determined and recorded, so that, in the use process of the display device, when the brightness modes of the display device are switched, the display driving module 20 can automatically output data voltage signals to the data line with corresponding driving capability, thereby adapting to the display effects of different brightness modes and reducing the power consumption of the display driving module 20.
Fig. 6 is a schematic structural diagram of another display device according to an embodiment of the present invention. Referring to fig. 6, alternatively, the driving signal line includes a scanning line GL. When the first driving signal line is the scanning line GL, the display device further includes a scan driving module 60, the display driving module 20 is connected to the first driving signal line through the scan driving module 60, and the display driving module 20 is further configured to output a control signal to the scan driving module 60 when the control switch module 30 is turned on, so that the scan driving module 60 transmits a target voltage to the first driving signal line in response to the control signal, and adjust a driving capability of the display driving module 20 to output the control signal to the scan driving module 60 according to a time required for the voltage transmitted to the display driving module 20 by the detection signal line to reach the target voltage.
Specifically, the first driving signal line may be any one of the plurality of scanning lines GL, for example, the first scanning line GL1 may be a first driving signal line, and when the second driving signal line is multiplexed as a detection signal line, the second driving signal line may also be a scanning line GL other than the first scanning line GL1, for example, the second scanning line GL2 is a second driving signal line, and the second scanning line GL2 may be multiplexed as a detection signal line.
Next, a case where the first scanning line GL1 is a first driving signal line, the second driving signal line is a second scanning line GL2, and the second scanning line GL2 is multiplexed as a detection signal line will be described as an example with reference to fig. 6. The display driving module 20 is connected to the scan driving module 60, and is connected to each scan line GL through the scan driving module 60. The first end of the first scan line GL1 and the first end of the second scan line GL2 are connected to the scan driving module 60, and the second end of the first scan line GL1 and the second end of the second scan line GL2 are connected through the switching module 30. Fig. 6 shows a case where the control end of the switch module 30 is connected to the scan driving module 60, so that the display driving module 20 is connected to the switch module 30 through the scan driving module 60, so that the switch module 30 is controlled to be turned on or off by the scan driving module 60, and in other embodiments, the control end of the switch module 30 may be directly connected to the display driving module 20, so that the switch module 30 is directly controlled to be turned on or off by the display driving module 20.
The display driving module 20 is further configured to output a control signal to the scan driving module 60 when the control switch module 30 is turned on, so that the scan driving module 60 transmits a target voltage to the first scan line GL1 in response to the control signal, and adjust a driving capability of the display driving module 20 to output the control signal to the scan driving module 60 according to a time required for the voltage transmitted to the display driving module 20 by the second scan line GL2 to reach the target voltage. The display driving module 20 may include a timing controller, the display driving module 20 may output a control signal to the scan driving module 60 through the timing controller, that is, the timing control signal, and the scan driving module 60 may transmit a scan signal to each scan line GL in response to the received timing control signal, so as to control the transistors in each row of pixel circuits through the scan signal, so that each row of pixel circuits writes a data voltage and drives the corresponding light emitting device to emit light, thereby implementing the scan driving of each row of sub-pixel units PX.
The display driving module 20 outputs the driving capability of the timing control signal to the scan driving module 60, determines whether the effective level in the timing control signal is sufficient, and thereby determines whether the effective level in the scan signal output from the scan driving module 60 to the scan line GL is sufficient. The full level of the active level in the scan signal affects the conduction of the transistors in the pixel circuit, and thus the full level of the data voltage written in the pixel circuit. Therefore, adjusting the driving capability of the display driving module 20 to output the timing control signal to the scan driving module 60 can improve the data voltage writing degree of the pixel circuit, thereby improving the display effect.
In this embodiment, when the time required for the voltage transmitted to the display driving module 20 by the second scan line GL2 to reach the target voltage is less than the target time, it indicates that the voltage rising speed on the scan line is higher, so that the scan signal can be more fully transmitted to the pixel circuit, and the writing degree of the data voltage of the pixel circuit is more fully achieved, so that the driving capability of the display driving module 20 for outputting the control signal to the scan driving module 60 can be reduced until the time required for the voltage transmitted to the display driving module 20 by the second scan line GL2 to reach the target voltage is equal to the target time, so as to reduce the power consumption of the display device. When the time required for the voltage transmitted to the display driving module 20 by the second scan line GL2 to reach the target voltage is greater than the target time, it indicates that the voltage rising speed on the scan line is slow, and thus the driving capability of the display driving module 20 to output the control signal to the scan driving module 60 can be increased until the time required for the voltage transmitted to the display driving module 20 by the second scan line GL2 to reach the target voltage is equal to the target time, which helps to avoid the insufficient writing degree of the data voltage of the pixel circuit. The scheme not only realizes the capability of adjusting the scanning driving module 60 to output the scanning signal to the scanning line GL according to the actual load of the scanning line GL, but also helps to reduce the power consumption of the display device while ensuring the display effect of the display device.
In other embodiments, the driving signal line 50 may also include both the data line DL and the scan line GL, for example, the schemes of fig. 5 and 6 may be combined, so that the driving capability of the display driving module 20 to output the control signal to the scan driving module 60 according to the actual load of the scan line GL, that is, the capability of the scan driving module 60 to output the scan signal to the scan line GL, and the capability of the display driving module 20 to output the data voltage signal to the data line DL may be achieved.
The embodiment of the invention also provides a control method of the display device, which is suitable for controlling the display device in any embodiment. Fig. 7 is a flowchart of a control method of a display device according to an embodiment of the present invention. Referring to fig. 7, the method specifically includes the steps of:
s110, transmitting the target voltage to the driving signal line through the display driving module so that the target voltage is transmitted to the detection signal line through the driving signal line.
S120, adjusting the driving capability of the display driving module for outputting the driving signal to the driving signal line according to the time required for the voltage transmitted to the display driving module by the detection signal line to reach the target voltage.
According to the technical scheme, the display driving module can monitor the change time of the voltage transmitted by the driving signal line so as to determine whether the actual load value of the driving signal line is matched with the current driving capability of the display driving module, so that the driving capability of the display driving module is adjusted, the power consumption is prevented from being increased due to the fact that the driving capability of the display driving module is too strong, and the display effect is prevented from being influenced due to the fact that the driving capability of the display driving module is too weak. Therefore, the scheme not only realizes the adjustment of the driving capability of the display driving module according to the actual load of the driving signal line in the display device, but also helps to reduce the power consumption of the display device while ensuring the display effect of the display device.
On the basis of the above embodiment, optionally, step S120 specifically includes:
when the time required by the voltage transmitted to the display driving module by the detection signal line to reach the target voltage is smaller than the target time, reducing the driving capability of the display driving module for outputting the driving signal to the driving signal line until the time required by the voltage transmitted to the display driving module by the detection signal line to reach the target voltage is equal to the target time;
when the time required by the voltage transmitted to the display driving module by the detection signal line to reach the target voltage is longer than the target time, the driving capability of the display driving module for outputting the driving signal to the driving signal line is increased until the time required by the voltage transmitted to the display driving module by the detection signal line to reach the target voltage is equal to the target time; alternatively, the target time is a time for which the display device satisfies a preset display effect and preset power consumption.
Optionally, the control method of the display device further includes:
and the display driving module is used for transmitting the target voltage to the driving signal line, and adjusting the driving capability of the display driving module for outputting the driving signal to the driving signal line in each display mode according to the time required for detecting the voltage transmitted to the display driving module by the signal line from the minimum voltage value corresponding to each display mode to the maximum voltage value, so that the display driving module outputs the driving signal to the driving signal line with the driving capability corresponding to the display mode.
Optionally, the control method of the display device further includes:
acquiring average values of optimal driving capability values of a plurality of target display devices for outputting driving signals to the driving signal lines in a preset display mode through the display driving module, determining the average values of the optimal driving capability values as preset driving capability values of the display driving module for outputting the driving signals to the driving signal lines in the preset display mode, and outputting the driving signals to the driving signal lines in the preset driving capability values through the display driving module when the display devices are displayed in the preset display mode; optionally, the optimal driving capability value is a driving capability value that enables the display device to satisfy a preset display effect.
The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.

Claims (13)

1. A display device, comprising: a display panel and a display driving module;
the display panel comprises a detection signal line and a driving signal line, one end of the driving signal line and one end of the detection signal line are connected with the display driving module, and the other end of the driving signal line and the other end of the detection signal line are directly or indirectly connected;
the display driving module is used for transmitting a target voltage to the driving signal line so that the target voltage is transmitted to the detection signal line through the driving signal line, and adjusting the driving capability of the display driving module for outputting a driving signal to the driving signal line according to the time required by the voltage transmitted to the display driving module by the detection signal line to reach the target voltage;
The adjusting the driving capability of the display driving module to output a driving signal to the driving signal line includes:
when the time required by the voltage transmitted to the display driving module by the detection signal line to reach the target voltage is smaller than the target time, reducing the driving capability of the display driving module to output a driving signal to the driving signal line until the time required by the voltage transmitted to the display driving module by the detection signal line to reach the target voltage is equal to the target time;
when the time required by the voltage transmitted to the display driving module by the detection signal line to reach the target voltage is longer than the target time, the driving capability of the display driving module for outputting a driving signal to the driving signal line is increased until the time required by the voltage transmitted to the display driving module by the detection signal line to reach the target voltage is equal to the target time;
the target time is a time for which the display device satisfies a preset display effect and preset power consumption.
2. The display device according to claim 1, wherein the display panel further comprises a switching module in a case where the other end of the driving signal line and the other end of the detection signal line are indirectly connected;
The other end of the driving signal line is connected with the other end of the detection signal line through the switch module, the control end of the switch module is connected with the display driving module, and the switch module is used for connecting or disconnecting the driving signal line and the detection signal line;
the display driving module is also used for controlling the switch module to be turned on or turned off so as to transmit a target voltage to the driving signal line when the switch module is turned on, so that the target voltage is transmitted to the detection signal line through the driving signal line.
3. The display device according to claim 2, wherein the switching module includes a transistor, a first pole of the transistor is connected to the driving signal line, a second pole of the transistor is connected to the detection signal line, and a gate of the transistor is connected to the display driving module.
4. The display device according to claim 2, wherein the driving signal lines are provided in plural, wherein the first driving signal line and the second driving signal line are two of the plurality of driving signal lines, and wherein the second driving signal line is multiplexed as the detection signal line.
5. The display device according to claim 4, wherein the driving signal line includes a data line and/or a scan line.
6. The display device according to claim 4, wherein when the first driving signal line is a scanning line, the display device further comprises a scanning driving module connected to the first driving signal line through the scanning driving module, the display driving module further configured to:
and outputting a control signal to the scanning driving module, so that the scanning driving module responds to the control signal to transmit a target voltage to the first driving signal line, and adjusting the driving capability of the display driving module to output the control signal to the scanning driving module according to the time required by the voltage transmitted to the display driving module by the detection signal line to reach the target voltage.
7. The display device according to claim 1, wherein the display driving module includes an analog-to-digital conversion unit, the analog-to-digital conversion unit is connected to the detection signal line, the analog-to-digital conversion unit is configured to collect a voltage on the detection signal line, and obtain a time required for the voltage transmitted to the display driving module by the detection signal line to reach the target voltage;
and/or the display driving module comprises a driving amplifier, and the display driving module outputs a driving signal to the driving signal line through the driving amplifier and adjusts the driving capability of the display driving module for outputting the driving signal to the driving signal line through the driving amplifier.
8. The display device of claim 1, wherein the display drive module is further configured to:
obtaining an average value of optimal driving capability values of a plurality of target display devices for outputting driving signals to a driving signal line in a preset display mode, determining the average value of the optimal driving capability values as the preset driving capability value of the display driving module for outputting the driving signals to the driving signal line in the preset display mode, and outputting the driving signals to the driving signal line through the display driving module in the preset driving capability value when the display devices display in the preset display mode.
9. The display device according to claim 8, wherein the optimal driving capability value is a driving capability value that causes the display device to satisfy a preset display effect.
10. The display device according to claim 1, wherein the display device includes a plurality of display modes, and a voltage range of the driving signal corresponding to each of the display modes includes a minimum voltage value and a maximum voltage value;
the display driving module is further configured to transmit a target voltage to the driving signal line, and adjust a driving capability of the display driving module to output a driving signal to the driving signal line in each display mode according to a time required for the voltage transmitted to the display driving module by the detection signal line to reach the maximum voltage value from the minimum voltage value corresponding to each display mode, so that the display driving module outputs the driving signal to the driving signal line with the driving capability corresponding to the display mode.
11. A control method of a display device, characterized in that the display device includes: a display panel and a display driving module; the display panel comprises a detection signal line and a driving signal line, one end of the driving signal line and one end of the detection signal line are connected with the display driving module, and the other end of the driving signal line and the other end of the detection signal line are directly or indirectly connected;
the control method of the display device comprises the following steps:
transmitting a target voltage to the driving signal line through the display driving module so that the target voltage is transmitted to the detection signal line through the driving signal line, and adjusting the driving capability of the display driving module for outputting a driving signal to the driving signal line according to the time required for the voltage transmitted to the display driving module by the detection signal line to reach the target voltage;
the adjusting the driving capability of the display driving module to output a driving signal to the driving signal line includes:
when the time required by the voltage transmitted to the display driving module by the detection signal line to reach the target voltage is smaller than the target time, reducing the driving capability of the display driving module for outputting a driving signal to the driving signal line until the time required by the voltage transmitted to the display driving module by the detection signal line to reach the target voltage is equal to the target time;
When the time required by the voltage transmitted to the display driving module by the detection signal line to reach the target voltage is longer than the target time, the driving capability of the display driving module for outputting a driving signal to the driving signal line is increased until the time required by the voltage transmitted to the display driving module by the detection signal line to reach the target voltage is equal to the target time;
the target time is a time for which the display device satisfies a preset display effect and preset power consumption.
12. The control method of a display device according to claim 11, wherein the display device includes a plurality of display modes, and a voltage range of the driving signal corresponding to each of the display modes includes a minimum voltage value and a maximum voltage value; the control method of the display device further includes: transmitting a target voltage to the driving signal line through the display driving module, and adjusting the driving capability of the display driving module to output a driving signal to the driving signal line in each display mode according to the time required for the voltage transmitted to the display driving module by the detection signal line to reach the maximum voltage value from the minimum voltage value corresponding to each display mode, thereby enabling the display driving module to output the driving signal to the driving signal line with the driving capability corresponding to the display mode;
And/or, the control method of the display device further comprises: the method comprises the steps that the display driving module obtains the average value of optimal driving capability values of a plurality of target display devices for outputting driving signals to a driving signal line in a preset display mode, the average value of the optimal driving capability values is determined to be the preset driving capability value of the display driving module for outputting the driving signals to the driving signal line in the preset display mode, and when the display devices are displayed in the preset display mode, the display driving module outputs the driving signals to the driving signal line in the preset driving capability value.
13. The display device according to claim 12, wherein the optimal driving capability value is a driving capability value that causes the display device to satisfy a preset display effect.
CN202210492547.2A 2022-05-07 2022-05-07 Display device and control method thereof Active CN114822417B (en)

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