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CN116580675A - Brightness compensation method and device and display device - Google Patents

Brightness compensation method and device and display device Download PDF

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Publication number
CN116580675A
CN116580675A CN202310368830.9A CN202310368830A CN116580675A CN 116580675 A CN116580675 A CN 116580675A CN 202310368830 A CN202310368830 A CN 202310368830A CN 116580675 A CN116580675 A CN 116580675A
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CN
China
Prior art keywords
brightness
display device
difference
backlight module
standard
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310368830.9A
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Chinese (zh)
Inventor
聂军
袁海江
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HKC Co Ltd
Original Assignee
HKC Co Ltd
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Publication date
Application filed by HKC Co Ltd filed Critical HKC Co Ltd
Priority to CN202310368830.9A priority Critical patent/CN116580675A/en
Publication of CN116580675A publication Critical patent/CN116580675A/en
Pending legal-status Critical Current

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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
    • G09G3/34—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 by control of light from an independent source
    • G09G3/3406—Control of illumination source
    • 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
    • G09G3/34—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 by control of light from an independent source
    • G09G3/3406—Control of illumination source
    • G09G3/342—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0247—Flicker reduction other than flicker reduction circuits used for single beam cathode-ray tubes
    • 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

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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 application provides a brightness compensation method, a device and a display device, and relates to the technical field of display, wherein the method is applied to the display device, the display device comprises a backlight module, and the method comprises the following steps: when the picture of the display device is detected to be a special picture and the voltage polarity of each source electrode of the display device needs to be reversed, the voltage polarity of each source electrode of the display device is reversed; and adjusting the brightness of the backlight module of the display device according to the difference between the offset common voltage and the standard common voltage of the display device. According to the technical scheme provided by the application, when the display device displays a special picture, transverse crosstalk caused by Vcom offset is reduced, and meanwhile, the phenomenon of picture flickering caused by polarity change of Source voltage can be improved.

Description

Brightness compensation method and device and display device
Technical Field
The present application relates to the field of display technologies, and in particular, to a brightness compensation method and device, and a display device.
Background
With the improvement of display technology, the display effect of the display device is also better, but when the display device displays special pictures such as V-1line, dot on off, etc., lateral crosstalk occurs due to the fact that the common voltage (Vcom) is easily shifted due to the panel characteristics.
In view of the above, a Source (Source) polarity compensation technique is currently commonly used, and when a display device is detected to display a special picture, the Vcom offset is reduced by changing the polarity of the Source voltage, so as to reduce the lateral crosstalk.
However, changing the polarity of the Source voltage causes the brightness of the entire picture to change instantaneously, thereby flickering the picture.
Disclosure of Invention
In view of the above, the present application provides a brightness compensation method, device and display device, which are used for reducing the lateral crosstalk caused by the Vcom offset and improving the flicker phenomenon of the frame caused by the polarity change of the Source voltage when the display device displays a special frame.
In order to achieve the above object, in a first aspect, an embodiment of the present application provides a brightness compensation method, which is applied to a display device, where the display device includes a backlight module, and includes:
when the picture of the display device is detected to be a special picture and the voltage polarity of each source electrode of the display device needs to be reversed, reversing the voltage polarity of each source electrode of the display device;
and adjusting the brightness of the backlight module of the display device according to the difference between the offset public voltage and the standard public voltage of the display device.
As an optional implementation manner of the embodiment of the present application, the method further includes:
and adjusting the brightness of the backlight module every other target time until the brightness of the backlight module is restored to the standard brightness, wherein the absolute value of the difference between the brightness after each adjustment and the brightness before each adjustment of the backlight module is smaller than or equal to the target brightness difference, and the absolute value of the difference between the brightness after each adjustment and the standard brightness is smaller than the absolute value of the difference between the brightness before each adjustment and the standard brightness.
As an optional implementation manner of the embodiment of the present application, the adjusting the brightness of the backlight module includes:
if the absolute value of the difference between the brightness before adjustment and the standard brightness is larger than or equal to the target brightness difference, adjusting the brightness of the backlight module according to the target brightness difference;
and if the absolute value of the difference between the brightness before adjustment and the standard brightness is smaller than the target brightness difference, adjusting the brightness of the backlight module to be the standard brightness.
As an optional implementation manner of the embodiment of the present application, the adjusting the brightness of the backlight module of the display device according to the difference between the offset common voltage and the standard common voltage of the display device includes:
determining a brightness compensation value according to the difference between the offset public voltage and the standard public voltage of the display device, wherein the brightness compensation value is used for adjusting the brightness of the backlight module;
and adjusting the brightness of the backlight module according to the brightness compensation value.
As an optional implementation manner of the embodiment of the present application, the backlight module includes a plurality of partitions, and the adjusting the brightness of the backlight module of the display device according to the difference between the offset common voltage and the standard common voltage of the display device includes:
for each partition of the backlight module, determining the difference between the offset common voltage of the partition and the standard common voltage;
and adjusting the brightness of the subarea according to the difference between the offset public voltage of the subarea and the standard public voltage.
As an optional implementation manner of the embodiment of the present application, for each partition of the backlight module, the brightness of the partition is adjusted every target time period until the brightness of the partition is restored to the standard brightness, and the absolute value of the difference between the brightness of the partition after each adjustment and the brightness before each adjustment is smaller than or equal to the target brightness difference, and the absolute value of the difference between the brightness of the partition after each adjustment and the standard brightness is smaller than the absolute value of the difference between the brightness of the partition before each adjustment and the standard brightness.
As an optional implementation manner of the embodiment of the present application, the method further includes:
when the display device is detected to be a normal screen, the driving method of the display device is adjusted to be column inversion.
As an optional implementation manner of the embodiment of the present application, the method further includes:
if the number of bright-dark adjacent sub-pixels in the picture of the display device is detected to be greater than or equal to the target number, determining that the picture of the display device is detected to be a special picture;
and if the number of the bright-dark adjacent sub-pixels in the picture of the display device is detected to be smaller than the target number, determining that the picture of the display device is detected to be a normal picture.
In a second aspect, an embodiment of the present application provides a brightness compensation device, which is applied to a display device, where the display device includes a backlight module, and the brightness compensation device includes: the device comprises a detection module, a reversing module and an adjustment module;
the detection module is used for: detecting a picture of the display device;
the reversing module is used for: and under the condition that the detection module detects that the picture of the display device is a special picture and the voltage polarity of each source electrode of the display device needs to be reversed, reversing the voltage polarity of each source electrode of the display device, and adjusting the brightness of a backlight module of the display device through the adjustment module according to the difference between the offset public voltage and the standard public voltage of the display device.
In a third aspect, an embodiment of the present application provides a display device, including: a backlight module and a brightness compensation device according to the second aspect or any one of the second aspects.
In a fourth aspect, an embodiment of the present application provides an electronic device, including: a memory and a processor, the memory for storing a computer program; the processor is configured to perform the method of the first aspect or any implementation of the first aspect when the computer program is invoked.
In a fifth aspect, an embodiment of the present application provides a computer readable storage medium, on which a computer program is stored, which when executed by a processor implements the method according to the first aspect or any implementation of the first aspect.
In a sixth aspect, an embodiment of the application provides a computer program product for, when run on an electronic device, causing the electronic device to perform the method of any one of the first aspects.
The technical scheme provided by the embodiment of the application is applied to the display device comprising the backlight module, and when the picture of the display device is detected to be a special picture and the voltage polarity of each Source electrode (namely Source) of the display device is required to be reversed, the voltage polarity of each Source electrode of the display device is reversed, so that transverse crosstalk and color cast caused by Vcom (namely common voltage of the display device) deviation can be reduced when the display device displays the special picture; and according to the difference between the offset common voltage and the standard common voltage of the display device, the brightness of the backlight module of the display device is adjusted, so that the brightness of the picture of the display device is adjusted, and the brightness of the picture of the display device before and after Vcom falls back can not obviously change, thereby improving the phenomenon of picture flicker of the display device caused by Vcom falling back instantly due to the polarity change of Source voltage.
Drawings
FIG. 1 is a flow chart of a brightness compensation method according to an embodiment of the application;
FIG. 2 is a schematic diagram of an offset Vcom of each region in a display device according to an embodiment of the application;
FIG. 3 is a flowchart illustrating another brightness compensation method according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a brightness compensation device according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of a display device according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Reference numerals illustrate:
11-a detection module; 12, an adjustment module;
13-reversing module;
110-a display panel; 120-a backlight module;
130-brightness compensation means;
210-memory; 220-processor.
Detailed Description
Embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application. The terminology used in the description of the embodiments of the application is for the purpose of describing particular embodiments of the application only and is not intended to be limiting of the application. The following embodiments may be combined with each other, and some embodiments may not be repeated for the same or similar concepts or processes.
When the display device displays a special screen such as V-1line and Dot on off, the common voltage (Vcom) is easily shifted due to the characteristics of the panel, so that lateral crosstalk occurs. At present, a Source (Source) polarity compensation technology is generally adopted, and when a display device is detected to display a special picture, the Vcom offset is reduced by changing the polarity of Source voltage, so that the transverse crosstalk is reduced.
However, at the moment of changing Source polarity, vcom will fall back instantaneously and return to the standard Vcom of the display device, thus generating a larger DeltaVcom, resulting in the instant change of the brightness of the whole picture, and human eyes are very sensitive to the change of the brightness, and feel that the picture has 'flicker' to cause discomfort.
Fig. 1 is a flow chart of a brightness compensation method according to an embodiment of the present application, as shown in fig. 1, the brightness compensation method according to an embodiment of the present application may include the following steps:
s110, detecting a picture of the display device.
The display device may generally include a normal screen and a special screen, and each subpixel of the display device displays a corresponding gray scale when the display device displays the normal screen.
The special picture can be a V-1line picture, a Dot on off picture and the like, and when the display device displays the special picture, each row of the picture of the display device can show a bright-dark phenomenon at intervals.
When detecting a screen of a display device, the luminance of each sub-pixel in the screen of the display device may be detected, or the luminance of a part of the sub-pixels in the screen of the display device may be detected, for example, the luminance of each sub-pixel in the odd/even lines of the display device.
It is understood that, in addition to detecting the luminance of each sub-pixel, the screen of the display device may be detected by detecting the chromaticity of each sub-pixel, the driving current of each sub-pixel, and the like.
The picture of the display device may be detected once at intervals, which may be at least 3 frames per interval, since 2-3 frame times are typically required to detect the picture of the display device.
S120, determining whether the picture of the display device is a special picture according to the detection result.
Specifically, if the number of bright-dark adjacent sub-pixels in the frame of the display device is detected to be greater than or equal to the target number, the frame of the display device can be determined to be a special frame. The target number may be a preset number.
If the number of bright and dark adjacent sub-pixels in the picture of the display device is detected to be smaller than the target number, the picture of the display device can be determined to be not a special picture, namely the picture of the display device is a normal picture.
S130, when the picture of the display device is a special picture and the voltage polarity of each source electrode of the display device needs to be reversed, the voltage polarity of each source electrode of the display device is reversed.
Since the detection of the display device frame is repeated, only when the display device frame is detected as a special frame for the first time (or the special frame may be detected for the second time or the third time), the voltage polarity of each Source (i.e., source) of the display device is reversed, and in the subsequent detection, even if the display device frame is still detected as a special frame, the voltage polarity of Source is not reversed any more. An inversion flag may be set to indicate whether the Source voltage has been inverted, which may be 0 or 1 (or may be or not, etc.), where 0 may indicate that the polarity of the Source voltage has not been inverted, and 1 may indicate that the polarity of the Source voltage has been inverted.
When the special picture is detected, the inversion mark is checked first, and when the inversion mark is 0, the inversion of the Source voltage polarity is not performed, and at this time, the Source voltage polarity of the display device needs to be inverted, so that the Source voltage polarity of the display device is inverted.
Specifically, since the display device is normally column-inverted during normal display, the Source voltage polarity of the display device can be inverted by adjusting the driving mode of the display device from column inversion to row inversion. The line inversion may be a 2line inversion, a 1+2line inversion, or other inversion modes. After the polarity of the Source voltage is reversed, vcom will drop back to the standard Vcom of the display device instantaneously, thereby reducing Vcom offset and further reducing lateral crosstalk and color bias caused by Vcom offset.
S140, adjusting the brightness of the backlight module of the display device according to the difference between the offset common voltage and the standard common voltage of the display device.
The brightness compensation value can be determined first according to the difference between the offset Vcom of the display device and the standard Vcom.
Specifically, the luminance compensation value may be determined according to the difference of the offset Vcom minus the standard Vcom, or may be determined according to the difference of the standard Vcom minus the offset Vcom.
The difference of the offset Vcom minus the standard Vcom and the luminance compensation value may be in a one-to-one correspondence, and the difference of the offset Vcom minus the standard Vcom is different, and the corresponding luminance compensation value is also different. The correspondence of the difference of the offset Vcom minus the standard Vcom and the luminance compensation value may be stored in a database in the form of a table or the like. Table 1 shows a compensation look-up table provided by an embodiment of the present application, which shows the correspondence between the difference of the partial offset Vcom minus the standard Vcom and the brightness compensation value.
TABLE 1
Offset Vcom-Standard Vcom (V) Brightness compensation value (nit)
1 50
0.8 40
0.6 30
0.4 20
After the brightness compensation value is determined, the brightness of the backlight module can be adjusted according to the brightness compensation value, so that the picture brightness of the display device is adjusted, the picture brightness of the display device after Vcom is fallen back is close to or the same as the picture brightness of the display device before Vcom is fallen back, and the phenomenon of picture flickering of the display device caused by Vcom instantaneous falling back due to the polarity change of Source voltage is improved.
S150, adjusting the brightness of the backlight module every other target time until the brightness of the backlight module is restored to the standard brightness.
The target duration may be a duration corresponding to 1 frame of picture displayed by the display device, or may be 2 frames, 3 frames or other set durations. In this embodiment, the target time length is taken as an example of the time length corresponding to the display device displaying 1 frame of picture, and exemplary description is made.
Specifically, the brightness of the backlight module can be adjusted once in the blanking time of each frame, so that the brightness of the backlight module gradually approaches the standard brightness until the brightness is equal to the standard brightness. The absolute value of the difference between the brightness after each adjustment and the brightness before adjustment can be smaller than or equal to the target brightness difference, so that human eyes cannot perceive brightness change of a display picture caused by brightness adjustment of the backlight module, and user experience is improved.
The standard brightness of the backlight module may be a brightness set before the display device leaves the factory, or may be a brightness of the backlight module corresponding to the brightness of the picture set by the user, or an optimal backlight brightness determined by the display device according to surrounding environment information, or the like.
The target brightness difference may be preset, for example, 10nit, and the target brightness difference may be greater or less than 10nit according to the specific situation. In this embodiment, the target luminance difference value is 10nit as an example, and an exemplary explanation is made.
And when the brightness is adjusted each time, if the absolute value of the difference between the brightness before the adjustment of the backlight module and the standard brightness is larger than or equal to the target brightness difference, the brightness of the backlight module can be adjusted according to the target brightness difference.
For example, the brightness of the backlight module after compensation is 405nit, and the standard brightness of the backlight module is 300nit. The brightness of the backlight module can be adjusted to 395nit in the blanking time of the 1 st frame after the polarity of the Source voltage is changed; and adjusting the brightness of the backlight module to 385nit after the blanking time of the 2 nd frame after the Source voltage polarity is changed, and so on until the blanking time of the 10 th frame after the Source voltage polarity is changed, and adjusting the brightness of the backlight module to 305nit.
And when the brightness is adjusted each time, if the absolute value of the difference between the brightness before the adjustment of the backlight module and the standard brightness is smaller than the target brightness difference, the brightness of the backlight module can be directly adjusted to the standard brightness.
For example, after the blanking time of the 10 th frame after the Source voltage polarity is changed, the brightness of the backlight module is adjusted to 305nit, and the difference between the brightness (305 nit) of the backlight module and the standard brightness (300 nit) is smaller than the target brightness difference (10 nit), so that the brightness of the backlight module can be directly adjusted from 305nit to 300nit after the blanking time of the 11 th frame after the Source voltage polarity is changed.
S160, when the screen of the display device is a normal screen, the driving method of the display device is adjusted to be column inversion.
When the display device displays a normal screen, the power consumption of the display device is low and the screen is good when the driving method of the display device is column inversion, and at this time, the driving method of the display device can be adjusted to column inversion.
The degree of Vcom coupling varies from display device to display device, resulting in a difference in offset Vcom, as shown in FIG. 2, in the column direction, the closer to the center control panel (The time of detrusor contraction, TCON) the higher the degree of Vcom coupling, the greater the difference between the offset Vcom and the standard Vcom. Therefore, different partitions can be arranged on the backlight module of the display device, and the brightness progress of each partition is compensated independently according to the offset Vcom corresponding to each partition, so as to achieve a better brightness compensation effect.
Fig. 3 is a flowchart of another brightness compensation method according to an embodiment of the present application, and as shown in fig. 3, the brightness compensation method according to an embodiment of the present application may include the following steps:
s210, detecting a picture of the display device.
S220, determining whether the picture of the display device is a special picture according to the detection result.
S230, when the display device is a special screen and the voltage polarity of each source of the display device needs to be inverted, inverting the voltage polarity of each source of the display device.
Step S210 to step S230 are similar to step S110 to step S130, and are not described here again.
S240, adjusting the brightness of each partition according to the difference between the offset common voltage and the standard common voltage of each partition of the backlight module.
For each partition of the backlight module, the brightness compensation value corresponding to each partition can be determined according to the difference of the offset Vcom minus the standard Vcom, or each brightness compensation value can be determined according to the difference of the offset Vcom minus the standard Vcom.
One or more offset Vcom can be included in a partition, and the offset Vcom of a partition can be an average of the individual offset Vcom of the partition.
The difference of the offset Vcom minus the standard Vcom of each partition and the brightness compensation value may be in a one-to-one correspondence, and the difference of the offset Vcom minus the standard Vcom is different, and the corresponding brightness compensation value is also different. The correspondence of the offset Vcom minus the standard Vcom and the luminance compensation value may be stored in a database in the form of a table (e.g., a compensation look-up table) or the like.
Each partition of the display module may correspond to the same compensation lookup table, or each partition of the display module may correspond to a different compensation lookup table.
After the brightness compensation value corresponding to each partition is determined, the brightness of each partition can be adjusted according to the brightness compensation value of each partition, so that the brightness of the compensated picture is more uniform, and the uniformity of the brightness of the display picture is improved.
S250, adjusting the brightness of each partition every other target time length until the brightness of each partition is restored to the standard brightness.
Specifically, the brightness of each partition of the backlight module can be adjusted once in the blanking time of each frame, so that the brightness of each partition of the backlight module gradually approaches the standard brightness until the brightness of each partition is equal to the standard brightness. The absolute value of the difference between the brightness after each adjustment and the brightness before each adjustment of each partition can be smaller than or equal to the target brightness difference, so that human eyes cannot perceive brightness change of a display picture caused by brightness adjustment of the backlight module, and user experience is improved.
For any partition of the display module, when the display module is adjusted each time, if the absolute value of the difference between the brightness before the partition adjustment and the standard brightness is greater than or equal to the target brightness difference, the brightness of the partition can be adjusted according to the target brightness difference.
For example, the brightness of the area a of the backlight module after compensation is 405nit, and the standard brightness of the backlight module is 300nit. The brightness of partition a can be adjusted to 395nit at the blanking time of frame 1 after changing the Source voltage polarity; the brightness of partition a is adjusted to 385nit after the blanking time of frame 2 after the Source voltage polarity is changed, and so on until the blanking time of frame 10 after the Source voltage polarity is changed, and the brightness of partition a is adjusted to 305nit.
For any partition of the display module, when the display module is adjusted each time, if the absolute value of the difference between the brightness before the partition adjustment and the standard brightness is smaller than the target brightness difference, the brightness of the partition can be directly adjusted to the standard brightness.
For example, after the blanking time of the 10 th frame after the Source voltage polarity is changed, the luminance of the partition a is adjusted to 305nit, and since the difference between the luminance (305 nit) of the partition a and the standard luminance (300 nit) is smaller than the target luminance difference (10 nit) at this time, the luminance of the partition a can be directly adjusted from 305nit to 300nit after the blanking time of the 11 th frame after the Source voltage polarity is changed.
S260, when the screen of the display device is a normal screen, the driving method of the display device is adjusted to be column inversion.
Step S260 is similar to step S160, and will not be described here.
The technical scheme provided by the embodiment of the application is applied to the display device comprising the backlight module, and when the picture of the display device is detected to be a special picture and the voltage polarity of each Source electrode (namely Source) of the display device is required to be reversed, the voltage polarity of each Source electrode of the display device is reversed, so that transverse crosstalk and color cast caused by Vcom (namely common voltage of the display device) deviation can be reduced when the display device displays the special picture; and according to the difference between the offset common voltage and the standard common voltage of the display device, the brightness of the backlight module of the display device is adjusted, so that the brightness of the picture of the display device is adjusted, and the brightness of the picture of the display device before and after Vcom falls back can not obviously change, thereby improving the phenomenon of picture flicker of the display device caused by Vcom falling back instantly due to the polarity change of Source voltage.
It will be appreciated by those skilled in the art that the above embodiments are exemplary and not intended to limit the application. The order of execution of one or more of the above steps may be modified, if possible, or may be combined selectively to yield one or more other embodiments. Those skilled in the art can select and combine any of the above steps according to the need, and all the steps do not depart from the spirit of the present application.
Based on the same inventive concept, as an implementation of the above method, the embodiment of the present application provides a brightness compensation device, which is applied to a display device including a backlight module, where the embodiment of the device corresponds to the embodiment of the foregoing method, and for convenience of reading, the embodiment of the device does not describe details of the embodiment of the foregoing method one by one, but it should be clear that the device in the embodiment can correspondingly implement all the details of the embodiment of the foregoing method.
Fig. 4 is a schematic structural diagram of a brightness compensation device according to an embodiment of the present application, as shown in fig. 4, the device provided in this embodiment includes: a detection module 11, a reversing module 12 and an adjustment module 13;
the detection module 11 is configured to: detecting a picture of the display device;
the reversing module 12 is configured to: when the detection module 11 detects that the picture of the display device is a special picture and the voltage polarity of each source electrode of the display device needs to be reversed, the voltage polarity of each source electrode of the display device is reversed;
the adjustment module 13 is configured to: and adjusting the brightness of the backlight module of the display device according to the difference between the offset public voltage and the standard public voltage of the display device.
As an alternative embodiment, the adjustment module 13 is further configured to:
and adjusting the brightness of the backlight module every other target time until the brightness of the backlight module is restored to the standard brightness, wherein the absolute value of the difference between the brightness after each adjustment and the brightness before each adjustment of the backlight module is smaller than or equal to the target brightness difference, and the absolute value of the difference between the brightness after each adjustment and the standard brightness is smaller than the absolute value of the difference between the brightness before each adjustment and the standard brightness.
As an alternative embodiment, the adjustment module 13 is further configured to:
if the absolute value of the difference between the brightness before adjustment and the standard brightness is larger than or equal to the target brightness difference, adjusting the brightness of the backlight module according to the target brightness difference;
and if the absolute value of the difference between the brightness before adjustment and the standard brightness is smaller than the target brightness difference, adjusting the brightness of the backlight module to be the standard brightness.
As an alternative embodiment, the adjustment module 13 is specifically configured to:
determining a brightness compensation value according to the difference between the offset public voltage and the standard public voltage of the display device, wherein the brightness compensation value is used for adjusting the brightness of the backlight module;
and adjusting the brightness of the backlight module according to the brightness compensation value.
As an optional embodiment, the backlight module includes a plurality of partitions, and the adjustment module 13 is specifically configured to:
for each partition of the backlight module, determining the difference between the offset common voltage of the partition and the standard common voltage;
and adjusting the brightness of the subarea according to the difference between the offset public voltage of the subarea and the standard public voltage.
As an alternative embodiment, the adjustment module 13 is specifically configured to:
and for each partition of the backlight module, adjusting the brightness of the partition every other target time until the brightness of the partition is recovered to the standard brightness, wherein the absolute value of the difference between the brightness after each adjustment and the brightness before each adjustment of the partition is smaller than or equal to the target brightness difference, and the absolute value of the difference between the brightness after each adjustment and the standard brightness is smaller than the absolute value of the difference between the brightness before each adjustment and the standard brightness.
As an alternative embodiment, the reversing module 12 is further configured to:
when the detection module 11 detects that the screen of the display device is a normal screen, the driving method of the display device is adjusted to be column inversion.
As an alternative embodiment, the detection module 11 is further configured to:
if the number of bright-dark adjacent sub-pixels in the picture of the display device is detected to be greater than or equal to the target number, determining that the picture of the display device is detected to be a special picture;
and if the number of the bright-dark adjacent sub-pixels in the picture of the display device is detected to be smaller than the target number, determining that the picture of the display device is detected to be a normal picture.
The brightness compensation device provided in this embodiment may execute the above method embodiment, and its implementation principle is similar to that of the technical effect, and will not be described herein again.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of the functional units and modules is illustrated, and in practical application, the above-described functional distribution may be performed by different functional units and modules according to needs, i.e. the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-described functions. The functional units and modules in the embodiment may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit, where the integrated units may be implemented in a form of hardware or a form of a software functional unit. In addition, the specific names of the functional units and modules are only for distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working process of the units and modules in the above system may refer to the corresponding process in the foregoing method embodiment, which is not described herein again.
Based on the same inventive concept, the embodiment of the present application further provides a display device, and fig. 5 is a schematic structural diagram of the display device provided by the embodiment of the present application, as shown in fig. 5, where the display device provided by the embodiment of the present application may include: the display panel 110, the backlight module 120 and the brightness compensation device 130 are described above.
The display panel 110 may be a liquid crystal display panel based on a thin film transistor (Thin Film Transistor Liquid Crystal Display, TFT-LCD), a liquid crystal display panel based on a light-emitting diode (LED), a liquid crystal display panel based on a sub-millimeter light-emitting diode (Mini-Light Emitting Diode, mini-LED), or a liquid crystal display panel based on a Micro-light-emitting diode (Micro-Light Emitting Diode, micro-LED), or the like.
All of the modules or units in the embodiments of the present application may be implemented by general-purpose integrated circuits such as a CPU (Central Processing Unit ) or by ASIC (Application Specific Integrated Circuit, application specific integrated circuit).
Based on the same inventive concept, the embodiment of the application also provides electronic equipment. Fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present application, as shown in fig. 6, where the electronic device provided in this embodiment includes: a memory 210 and a processor 220, the memory 210 for storing a computer program; the processor 220 is configured to perform the method described in the method embodiments above when the computer program is invoked.
The electronic device provided in this embodiment may execute the above method embodiment, and its implementation principle is similar to that of the technical effect, and will not be described herein again.
The embodiment of the application also provides a computer readable storage medium, on which a computer program is stored, which when being executed by a processor, implements the method described in the above method embodiment.
The embodiment of the application also provides a computer program product which, when run on an electronic device, causes the electronic device to execute the method described in the embodiment of the method.
In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, produces a flow or function in accordance with embodiments of the present application, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in or transmitted across a computer-readable storage medium. The computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line), or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., a floppy Disk, hard Disk, or magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid State Disk (SSD)), or the like.
Those of ordinary skill in the art will appreciate that implementing all or part of the above-described method embodiments may be accomplished by a computer program to instruct related hardware, the program may be stored in a computer readable storage medium, and the program may include the above-described method embodiments when executed. And the aforementioned storage medium may include: ROM or random access memory RAM, magnetic or optical disk, etc.
The naming or numbering of the steps in the present application does not mean that the steps in the method flow must be executed according to the time/logic sequence indicated by the naming or numbering, and the execution sequence of the steps in the flow that are named or numbered may be changed according to the technical purpose to be achieved, so long as the same or similar technical effects can be achieved.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and in part, not described or illustrated in any particular embodiment, reference is made to the related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus/device and method may be implemented in other manners. For example, the apparatus/device embodiments described above are merely illustrative, e.g., the division of the modules or units is merely a logical functional division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection via interfaces, devices or units, which may be in electrical, mechanical or other forms.
It should be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
In the description of the present application, unless otherwise indicated, "/" means that the objects associated in tandem are in a "or" relationship, e.g., A/B may represent A or B; the "and/or" in the present application is merely an association relationship describing the association object, and indicates that three relationships may exist, for example, a and/or B may indicate: there are three cases, a alone, a and B together, and B alone, wherein a, B may be singular or plural.
Also, in the description of the present application, unless otherwise indicated, "a plurality" means two or more than two. "at least one of the following" or similar expressions thereof, means any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or plural.
As used in the present description and the appended claims, the term "if" may be interpreted as "when..once" or "in response to a determination" or "in response to detection" depending on the context. Similarly, the phrase "if a determination" or "if a [ described condition or event ] is detected" may be interpreted in the context of meaning "upon determination" or "in response to determination" or "upon detection of a [ described condition or event ]" or "in response to detection of a [ described condition or event ]".
Furthermore, in the description of the present specification and the appended claims, the terms "first," "second," "third," and the like 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 described herein may be implemented in other sequences than those illustrated or otherwise described herein.
Reference in the specification to "one embodiment" or "some embodiments" or the like means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," and the like in the specification are not necessarily all referring to the same embodiment, but mean "one or more but not all embodiments" unless expressly specified otherwise.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application.

Claims (10)

1. The brightness compensation method is applied to a display device, wherein the display device comprises a backlight module, and is characterized by comprising the following steps:
when the picture of the display device is detected to be a special picture and the voltage polarity of each source electrode of the display device needs to be reversed, reversing the voltage polarity of each source electrode of the display device;
and adjusting the brightness of the backlight module of the display device according to the difference between the offset public voltage and the standard public voltage of the display device.
2. The method according to claim 1, wherein the method further comprises:
and adjusting the brightness of the backlight module every other target time until the brightness of the backlight module is restored to the standard brightness, wherein the absolute value of the difference between the brightness after each adjustment and the brightness before each adjustment of the backlight module is smaller than or equal to the target brightness difference, and the absolute value of the difference between the brightness after each adjustment and the standard brightness is smaller than the absolute value of the difference between the brightness before each adjustment and the standard brightness.
3. The method of claim 2, wherein the adjusting the brightness of the backlight module comprises:
if the absolute value of the difference between the brightness before adjustment and the standard brightness is larger than or equal to the target brightness difference, adjusting the brightness of the backlight module according to the target brightness difference;
and if the absolute value of the difference between the brightness before adjustment and the standard brightness is smaller than the target brightness difference, adjusting the brightness of the backlight module to be the standard brightness.
4. The method of claim 1, wherein adjusting the brightness of the backlight module of the display device according to the difference between the offset common voltage and the standard common voltage of the display device comprises:
determining a brightness compensation value according to the difference between the offset public voltage and the standard public voltage of the display device, wherein the brightness compensation value is used for adjusting the brightness of the backlight module;
and adjusting the brightness of the backlight module according to the brightness compensation value.
5. The method of claim 1, wherein the backlight module comprises a plurality of partitions, and the adjusting the brightness of the backlight module of the display device according to the difference between the offset common voltage and the standard common voltage of the display device comprises:
for each partition of the backlight module, determining the difference between the offset common voltage of the partition and the standard common voltage;
and adjusting the brightness of the subarea according to the difference between the offset public voltage of the subarea and the standard public voltage.
6. The method according to claim 5, wherein for each partition of the backlight module, the brightness of the partition is adjusted every target period until the brightness of the partition is restored to the standard brightness, the absolute value of the difference between the brightness after each adjustment and the brightness before each adjustment of the partition is less than or equal to the target brightness difference, and the absolute value of the difference between the brightness after each adjustment and the standard brightness is less than the absolute value of the difference between the brightness before each adjustment and the standard brightness.
7. The method according to claim 1, wherein the method further comprises:
when the display device is detected to be a normal screen, the driving method of the display device is adjusted to be column inversion.
8. The method according to any one of claims 1-7, further comprising:
if the number of bright-dark adjacent sub-pixels in the picture of the display device is detected to be greater than or equal to the target number, determining that the picture of the display device is detected to be a special picture;
and if the number of the bright-dark adjacent sub-pixels in the picture of the display device is detected to be smaller than the target number, determining that the picture of the display device is detected to be a normal picture.
9. The utility model provides a luminance compensation arrangement is applied to display device, display device includes backlight unit, its characterized in that includes: the device comprises a detection module, a reversing module and an adjustment module;
the detection module is used for: detecting a picture of the display device;
the reversing module is used for: inverting the voltage polarity of each source electrode of the display device under the condition that the detection module detects that the picture of the display device is a special picture and the voltage polarity of each source electrode of the display device needs to be inverted;
the adjusting module is used for: and adjusting the brightness of the backlight module of the display device according to the difference between the offset public voltage and the standard public voltage of the display device.
10. A display device, comprising: a backlight module and a brightness compensation device according to claim 9.
CN202310368830.9A 2023-03-28 2023-03-28 Brightness compensation method and device and display device Pending CN116580675A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310368830.9A CN116580675A (en) 2023-03-28 2023-03-28 Brightness compensation method and device and display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310368830.9A CN116580675A (en) 2023-03-28 2023-03-28 Brightness compensation method and device and display device

Publications (1)

Publication Number Publication Date
CN116580675A true CN116580675A (en) 2023-08-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
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CN (1) CN116580675A (en)

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