CN106898293A - A kind of light-emitting diode display and its display brightness method of adjustment - Google Patents
A kind of light-emitting diode display and its display brightness method of adjustment Download PDFInfo
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- CN106898293A CN106898293A CN201710082254.6A CN201710082254A CN106898293A CN 106898293 A CN106898293 A CN 106898293A CN 201710082254 A CN201710082254 A CN 201710082254A CN 106898293 A CN106898293 A CN 106898293A
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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]
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
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Abstract
The invention belongs to LED technology field, there is provided a kind of light-emitting diode display and its display brightness method of adjustment.In the present invention, by the monochrome information for obtaining data to be displayed, and the electric current adjusted value of multiple driving chips of light-emitting diode display is calculated according to monochrome information, and then the display brightness of multiple display units of light-emitting diode display is adjusted according to electric current adjusted value, so as to improve the luminance dynamic adjusting range of the display unit of light-emitting diode display, solve existing light-emitting diode display and there are problems that the illuminometer Danone caused by luminance dynamic range is low is hypodynamic.
Description
Technical field
The invention belongs to LED technology field, more particularly to a kind of light-emitting diode display and its display brightness method of adjustment.
Background technology
In recent years, light-emitting diode display because its high brightness, low in energy consumption, steady performance and be more and more applied to
In daily life, for example, being arranged at the electronic display in the places such as Entertainment Plaza, commercial street, hospital, railway station；This
Outward, as the technology of light-emitting diode display develops, light-emitting diode display also begins to enter the industry higher to display requirement such as Automobile Design
In design occasion.
However, when current light-emitting diode display shows material (video or the picture) of 8bit, it is red that it is merely able to display
The pixel value of (Red, R), green (Green, G), blue (Blue, B) component in [0,255], the material for 10bit, LED shows
Device is at best able to show pixel value in [0,1023] of R, G, B component, and even 1024 different gray scales, also show
The brightness case of light in nature can not be so represented, such as, the brightness of the sun outside window is probably fluorescent tube in room in certain picture
Thousands of times of brightness, are tens of thousands of times or even hundreds of thousands times of the brightness on the floor illuminated by fluorescent tube, and human eye is constant in pupil
In the case of can probably perceive 10 five powers brightness range, its brightness ability to express far beyond current light-emitting diode display.
In sum, the brightness ability to express that existing light-emitting diode display is present caused by luminance dynamic range is low is not enough
Problem.
The content of the invention
It is an object of the invention to provide a kind of light-emitting diode display and its display brightness method of adjustment, it is intended to solve existing
Light-emitting diode display has that the illuminometer Danone caused by luminance dynamic range is low is hypodynamic.
The present invention is achieved in that a kind of display brightness method of adjustment of light-emitting diode display, and the light-emitting diode display includes
Multiple display units and multiple driving chips, and a driving chip is for controlling a corresponding display
Unit carries out data display；The display brightness method of adjustment includes：
Obtain the monochrome information of data to be displayed；
The electric current adjusted value of multiple driving chips is calculated according to the monochrome information；
The display brightness of multiple display units is adjusted according to the electric current adjusted value.
Another object of the present invention also resides in a kind of light-emitting diode display of offer, and the light-emitting diode display includes multiple display units
It is used to controlling the corresponding display unit carry out data with multiple driving chips, and driving chip
Display；The light-emitting diode display also includes：
Acquisition module, the monochrome information for obtaining data to be displayed；
Computing module, the electric current adjusted value for calculating multiple driving chips according to the monochrome information；
Adjusting module, the display brightness for adjusting multiple display units according to the electric current adjusted value.
In the present invention, by obtaining the monochrome information of data to be displayed, and light-emitting diode display is calculated according to monochrome information
The electric current adjusted value of multiple driving chips, and then the display of multiple display units of light-emitting diode display is adjusted according to electric current adjusted value
Brightness, so as to improve the luminance dynamic adjusting range of the display unit of light-emitting diode display, solves existing light-emitting diode display and deposits
The hypodynamic problem of illuminometer Danone caused by low because of luminance dynamic range.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of the display brightness method of adjustment of the light-emitting diode display that the embodiment of the present invention one is provided；
Fig. 2 is the schematic flow sheet of the display brightness method of adjustment of the light-emitting diode display that the embodiment of the present invention two is provided；
Fig. 3 is the modular structure schematic diagram of the light-emitting diode display that the embodiment of the present invention three is provided；
Fig. 4 is the modular structure schematic diagram of computing module in light-emitting diode display shown in Fig. 3；
Fig. 5 is another modular structure schematic diagram of computing module in light-emitting diode display shown in Fig. 3.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Realization of the invention is described in detail below in conjunction with specific accompanying drawing：
It is a kind of signal stream of the display brightness method of adjustment of light-emitting diode display that the embodiment of the present invention one is provided referring to Fig. 1
Cheng Tu.The executive agent of the display brightness method of adjustment of the light-emitting diode display in the present embodiment is light-emitting diode display, the light-emitting diode display
It is used to control a corresponding display unit including multiple display units and multiple driving chips, and a driving chip
Carry out data display.The display brightness method of adjustment of the light-emitting diode display as shown in Figure 1 is comprised the following steps：
S10：Obtain the monochrome information of data to be displayed.
Wherein, in embodiments of the present invention, data to be displayed includes but is not limited to picture, video data or voice data
Deng, and when light-emitting diode display is when the data to be displayed is received, the acquisition of information that can be carried according to the data to be displayed is waited to show
The monochrome information of registration.
For example, when data to be displayed is the video data of high dynamic range images (High-Dynamic Range, HDR)
When, because HDR standards requirement video needs to carry HDR dynamic metadatas in transmission, and the dynamic metadata includes video counts
High-high brightness in per frame, per the mean flow rate of frame, the high-high brightness of whole video data, whole video data it is average bright
The information such as degree and video transmission interface specification, therefore, when light-emitting diode display receives the video data, can be regarded according to this
Frequency obtains the monochrome information of video to be shown according to the HDR dynamic metadatas for carrying.
S11：The electric current adjusted value of multiple driving chips is calculated according to the monochrome information.
Wherein, in the present embodiment, when data display is carried out be due to light-emitting diode display controlled by driving chip it is right with it
The display unit answered carries out data display, and driving chip mainly passes through constant electricity when corresponding display unit is controlled
What pulse width modulation (Pulse Width Modulation, the PWM) signal for flowing down was realized, but due to according under constant current
The brightness range that can realize is than relatively low when pwm signal adjusts the display brightness of display unit, therefore, light-emitting diode display is being obtained
To after the monochrome information of data to be displayed, the electric current adjusted value of multiple driving chips can be calculated according to monochrome information, with according to electricity
The display brightness of the multiple display units of stream adjusted value adjustment.
S12：The display brightness of multiple display units is adjusted according to the electric current adjusted value.
Wherein, in embodiments of the present invention, when light-emitting diode display gets the electric current of multiple driving chips in step s 102
After adjusted value, multiple driving chips in light-emitting diode display can according in respective electric current adjusted value real-time adjustment itself with it is corresponding
The current value of the pin of display unit connection, and then corresponding display unit is adjusted according to the pwm signal under the current value
Display brightness, so as to realize being adjusted according to electric current the display brightness of display unit, display unit in light-emitting diode display is improved with this
Luminance dynamic adjusting range.
In embodiments of the present invention, light-emitting diode display is by obtaining the monochrome information of data to be displayed, and according to monochrome information
The electric current adjusted value of multiple driving chips of light-emitting diode display is calculated, and then the multiple of light-emitting diode display is adjusted according to electric current adjusted value
The display brightness of display unit, so as to improve the luminance dynamic adjusting range of the display unit of light-emitting diode display, solves existing
Light-emitting diode display there are problems that the illuminometer Danone caused by luminance dynamic range is low is hypodynamic.
It is a kind of signal stream of the display brightness method of adjustment of light-emitting diode display that the embodiment of the present invention two is provided referring to Fig. 2
Cheng Tu.The executive agent of the display brightness method of adjustment of the light-emitting diode display in the present embodiment is light-emitting diode display, the light-emitting diode display
It is used to control a corresponding display unit including multiple display units and multiple driving chips, and a driving chip
Carry out data display.The display brightness method of adjustment of the light-emitting diode display as shown in Figure 2 is comprised the following steps：
S20：Obtain the monochrome information of data to be displayed.
Wherein, in embodiments of the present invention, data to be displayed includes but is not limited to picture, video data or voice data
Deng, and when light-emitting diode display is when the data to be displayed is received, the acquisition of information that can be carried according to the data to be displayed is waited to show
The monochrome information of registration.
For example, when data to be displayed is the video data of high dynamic range images (High-Dynamic Range, HDR)
When, because HDR standards requirement video needs to carry HDR dynamic metadatas in transmission, and the dynamic metadata includes video counts
High-high brightness in per frame, per the mean flow rate of frame, the high-high brightness of whole video data, whole video data it is average bright
The information such as degree and video transmission interface specification, therefore, when light-emitting diode display receives the video data, can be regarded according to this
Frequency obtains the monochrome information of video to be shown according to the HDR dynamic metadatas for carrying.
S21：The electric current adjusted value of multiple driving chips is calculated according to the monochrome information.
Wherein, in the present embodiment, when data display is carried out be due to light-emitting diode display controlled by driving chip it is right with it
The display unit answered carries out data display, and driving chip mainly passes through constant electricity when corresponding display unit is controlled
What pulse width modulation (Pulse Width Modulation, the PWM) signal for flowing down was realized, but due to according under constant current
The brightness range that can realize is than relatively low when pwm signal adjusts the display brightness of display unit, therefore, light-emitting diode display is being obtained
To after the monochrome information of data to be displayed, the electric current adjusted value of multiple driving chips can be calculated according to monochrome information, with according to electricity
The display brightness of the multiple display units of stream adjusted value adjustment.
Further, the electric current adjusted value for calculating multiple driving chips according to the monochrome information is specially：
S210：The monochrome information includes the first monochrome information and the second monochrome information；According to first monochrome information
Calculating multiple driving chips with second monochrome information drives multiple display units to show working as during per frame data
Preceding electric current adjusted value.
Wherein, in embodiments of the present invention, the first monochrome information is the maximum brightness value of data to be displayed, the second brightness letter
It is the maximum brightness value in data to be displayed per frame data to cease.
For example, when data to be displayed is HDR video datas, the first monochrome information is the maximum of whole HDR video datas
Brightness value, and the second monochrome information is the maximum brightness value of every frame data in HDR video datas, and in the HDR video datas
Maximum brightness value per frame data is not quite similar.
When HDR video datas are shown it is to pass through due to light-emitting diode display it should be noted that in embodiments of the present invention
Picture high speed Dynamic Announce one by one, therefore, when light-emitting diode display in display per frame HDR video datas when, can according to the frame
The maximum brightness value of HDR video datas works as electric current with the multiple driving chips of maximum brightness value acquisition of entirety HDR video datas
Adjusted value, and the current flow adjusted value of the plurality of driving chip is one value of identical.
Further, multiple driving chips are calculated according to first monochrome information and second monochrome information to drive
Move the multiple display unit and show that current flow adjusted value during per frame data is specially：
According to formulaThe electric current for calculating the current gain register in each described driving chip increases
Benefit value；Wherein, L1 is the corresponding brightness value of first monochrome information, and L2 is the corresponding brightness value of second monochrome information, n
It is the digit of the current gain register in driving chip each described, and is positive integer, Re1 is in each described driving chip
Current gain register current gain；
Determine that multiple driving chips drive multiple display units to show per frame number according to the current gain
According to when current flow adjusted value.
Wherein, in embodiments of the present invention, due to all including current gain register in driving chip, and pass through to set
The current gain of current gain register can realize the output pin that dynamic adjustment driving chip is connected with display unit
Current value, and adjusting range is 12.5%~200%, therefore, when light-emitting diode display is getting the most light of data to be displayed
After angle value and the maximum brightness value per frame data, light-emitting diode display can basisIn calculating each driving chip
Current gain register current gain.
For example, when the maximum brightness value of data to be displayed is 255, and the high-high brightness of this frame data is 64, and each drives
When the digit of the current gain register of dynamic chip is 8, light-emitting diode display can basisObtain
The current gain 64 of the current gain register of multiple driving chips.
Further, after light-emitting diode display gets the current gain of current gain register of multiple driving chips,
Light-emitting diode display can determine that multiple driving chips drive multiple display units to show working as during per frame data according to the current gain
Preceding current value, specifically, light-emitting diode display can be closed according to the mapping between the current gain and electric current adjusted value for prestoring
System determines the electric current adjusted value of multiple driving chips, for example, when the current gain that light-emitting diode display gets multiple driving chips is posted
After the current gain 64 of storage, can be closed according to the mapping between the current gain 64 and the electric current adjusted value of driving chip
System, the electric current adjusted value of multiple driving chips is adjusted to and the 64 corresponding value；It should be noted that the embodiment of the present invention
In refer to this currently displaying frame data of light-emitting diode display per frame data.
Below to the display brightness method of adjustment of light-emitting diode display of the invention so that data to be displayed is 10bit materials as an example
It is illustrated：
When data to be displayed is 10bit materials, no matter data to be displayed is video data, voice data or figure
Piece, its R, G, B component during display at most can reach 1023 grey levels, and work as electric current of the light-emitting diode display using acquiescence
Yield value 128, i.e., it is current in light-emitting diode display when the current value corresponding to driving chip is 20 milliamperes of display data to be displayed
White balance brightness is on the basis of 1000 nits, light-emitting diode display also can only during the display brightness of adjustment display unit
It is nit one grey level of correspondence, and works as and be adjusted to the current gain of the middle current gain register of driving chip
When 64, that is, correspond to and shown during data to be displayed for 10 milliamperes with the current value of driving chip, in current white flat of light-emitting diode display
Weighing apparatus brightness is on the basis of 500 nits, light-emitting diode display can equally show 1024 grades of grey levels, and single in adjustment display
During the display brightness of unit, can be adjusted using 0.5 nit, one grey level of correspondence, so as to substantially increase
The display brightness dynamic adjusting range of display unit, and increased expressing gradation of light-emitting diode display when low bright.
Further, the electric current adjusted value for calculating multiple driving chips according to the monochrome information is specially：
S211：The monochrome information includes the 3rd monochrome information with multiple 4th monochrome informations；According to the 3rd brightness
Information calculates the current flow adjusted value of each driving chip with multiple 4th monochrome informations respectively.
Wherein, in example in real time of the invention, the 3rd monochrome information is the maximum brightness value of every frame data in data to be displayed,
Multiple 4th monochrome informations are the maximum brightness value of the current data to be shown of multiple display units, and multiple display units are currently treated
The data of display constitute every frame data.
Specifically, a display for display unit of light-emitting diode display is responsible for due to each driving chip, therefore, when
When light-emitting diode display gets data to be displayed, light-emitting diode display can calculate each frame data by its internal control identifying system
In the gray value of a small block data be responsible for of each driving chip, and then extract the small block data that each driving chip is responsible for
Gray value maximum brightness value and the maximum brightness value of whole image, the small block data that each driving chip is responsible for
Gray value is the 4th monochrome information, and the maximum brightness value of the whole image is the 3rd monochrome information.
For example, when data to be displayed is HDR video datas, the 3rd monochrome information is every frame data in HDR video datas
Maximum brightness value, and multiple 4th monochrome information is the maximum brightness value of the current data to be shown of multiple display units, and
And the maximum brightness value of each display unit data to be shown is not quite similar, therefore, when light-emitting diode display in display per frame HDR
During video data, the multiple displays that can be responsible for according to the maximum brightness value of frame HDR video datas and multiple driving chips are single
In unit the maximum brightness value of data obtain multiple driving chips when electric current adjusted value, and the plurality of driving chip current electricity
Stream adjusted value is worth for multiple.
Further, each described drive is calculated according to the 3rd monochrome information respectively with multiple 4th monochrome informations
The current flow adjusted value of dynamic chip is specially：
According to formulaThe electric current of the current gain register of each driving chip is calculated respectively
Yield value；Wherein, L3 is the corresponding brightness value of the 3rd monochrome information, and L4 is corresponding bright for multiple 4th monochrome informations
Angle value, n is the digit of the current gain register in each described driving chip, and is positive integer, and Re2 is each described driving
The current gain of the current gain register of chip；
Determine the current flow adjusted value of each driving chip respectively according to the current gain.
Wherein, in embodiments of the present invention, due to all including current gain register in driving chip, and pass through to set
The current gain of current gain register can realize the output pin that dynamic adjustment driving chip is connected with display unit
Current value, and adjusting range is 12.5%~200%, therefore, when light-emitting diode display is obtaining the maximum brightness value per frame data
After the maximum brightness value of the data that the multiple display units being responsible for multiple driving chips show, light-emitting diode display can basisCalculate the current gain of the current gain register in each driving chip.
For example, when the maximum brightness value per frame data is 255, and the first display unit that the first driving chip is responsible for is aobvious
The maximum brightness value of the data shown is 32, the high-high brightness of the data that the second display unit that the second driving chip is responsible for shows
It is 64 to be worth, and the maximum brightness value of the data that the 3rd display unit that the 3rd driving chip is responsible for shows is 48, and each drives
When the digit of the current gain register of chip is 8, light-emitting diode display can basisObtain first
The current gain 32 of the current gain register of individual driving chip, according toObtain the second drive
The current gain 64 of the current gain register of dynamic chip, and according toObtain the 3rd driving
The current gain 48 of the current gain register of chip.
Further, after light-emitting diode display gets the current gain of current gain register of multiple driving chips,
Light-emitting diode display can determine that multiple driving chips drive multiple display units to show working as during per frame data according to the current gain
Preceding current value, specifically, light-emitting diode display can be closed according to the mapping between the current gain and electric current adjusted value for prestoring
System determines the electric current adjusted value of multiple driving chips, for example, when light-emitting diode display gets first current gain of driving chip
After the current gain 32 of register, can be according to reflecting between the electric current adjusted value of the driving chip of current gain 32 and first
Relation is penetrated, the electric current adjusted value of the first driving chip is adjusted to and the 32 corresponding value；When light-emitting diode display gets second
After the current gain 64 of the current gain register of individual driving chip, can be according to the driving chip of current gain 64 and second
Electric current adjusted value between mapping relations, the electric current adjusted value of the second driving chip is adjusted to and the 64 corresponding value；
After light-emitting diode display gets current gain 48 of the 3rd current gain register of driving chip, can be according to the electric current
Mapping relations between the electric current adjusted value of the driving chip of yield value 48 and the 3rd, the electric current adjusted value of the 3rd driving chip is equal
It is adjusted to and the 48 corresponding value；It should be noted that refer to light-emitting diode display per frame data in the embodiment of the present invention currently showing
This frame data for showing.
S22：The display brightness of multiple display units is adjusted according to the electric current adjusted value.
Wherein, in embodiments of the present invention, when light-emitting diode display gets the electric current of multiple driving chips in the step s 21
After adjusted value, multiple driving chips in light-emitting diode display can according in respective electric current adjusted value real-time adjustment itself with it is corresponding
The current value of the pin of display unit connection, and then corresponding display unit is adjusted according to the pwm signal under the current value
Display brightness, so as to realize being adjusted according to electric current the display brightness of display unit, display unit in light-emitting diode display is improved with this
Luminance dynamic adjusting range.
Specifically, when the electric current adjusted value of multiple driving chips that light-emitting diode display is obtained is identical, then light-emitting diode display root
The display brightness of multiple display units is adjusted according to the identical electric current adjusted value, and is worked as the multiple of light-emitting diode display acquisition and is driven core
When the electric current adjusted value of piece is not quite similar, then light-emitting diode display is according to the respective electric current adjusted value adjustment driving chip of driving chip
Each the display brightness of the display unit of control, the brightness of the whole screen of light-emitting diode display is changed with this.
In embodiments of the present invention, light-emitting diode display is by obtaining the monochrome information of data to be displayed, and according to monochrome information
The electric current adjusted value of multiple driving chips of light-emitting diode display is calculated, and then the multiple of light-emitting diode display is adjusted according to electric current adjusted value
The display brightness of display unit, so as to improve the luminance dynamic adjusting range of the display unit of light-emitting diode display, solves existing
Light-emitting diode display there are problems that the illuminometer Danone caused by luminance dynamic range is low is hypodynamic.
Additionally, the maximum brightness value of data that is shown according to the display unit that driving chip is responsible for of light-emitting diode display with it is every
The maximum brightness value of frame data, obtains the electric current adjusted value of multiple driving chips, and then is adjusted according to the electric current of multiple driving chips
The brightness of the display unit of the whole multiple driving chip each group controls of value adjustment, the brightness of the whole screen of light-emitting diode display is changed with this,
So as to improve the luminance dynamic adjusting range of the display unit of light-emitting diode display.
It is a kind of schematic block diagram of light-emitting diode display 3 that the embodiment of the present invention three is provided, the light-emitting diode display 3 referring to Fig. 3
It is used to control including multiple display unit (not shown)s and multiple driving chip (not shown)s, and a driving chip
A corresponding display unit of system carries out data display.Each module that the light-emitting diode display of the present embodiment includes is used to perform
Each step in the corresponding embodiments of Fig. 1 and Fig. 2, in specifically referring to Fig. 1, Fig. 2 and Fig. 1 and the corresponding embodiments of Fig. 2
Associated description, does not repeat herein.The light-emitting diode display 3 of the present embodiment includes acquisition module 30, computing module 31 and adjusting module
32。
Acquisition module 30, the monochrome information for obtaining data to be displayed.
Computing module 31, the electric current adjusted value for calculating multiple driving chips according to monochrome information.
Adjusting module 32, the display brightness for adjusting multiple display units according to electric current adjusted value.
Wherein, monochrome information of the computing module 31 when the electric current adjusted value of multiple driving chips is calculated according to monochrome information
Including the first monochrome information and the second monochrome information；Wherein, the first monochrome information is the maximum brightness value of data to be displayed, second
Monochrome information is the maximum brightness value of every frame data in data to be displayed.
Further, computing module 31 is additionally operable to calculate multiple driving cores according to the first monochrome information and the second monochrome information
Piece drives multiple display units to show current flow adjusted value during per frame data.
Specifically, as shown in figure 4, computing module 31 includes the first computing unit 310 and the first determining unit 311.
Wherein, the first computing unit 310 is used for according to formulaCalculate the electricity in each driving chip
The current gain of flow enhancement register；Wherein, L1 is the corresponding brightness value of the first monochrome information, and L2 is the second monochrome information pair
The brightness value answered, n is the digit of the current gain register in each driving chip, and is positive integer, and Re1 is each driving core
The current gain of the current gain register in piece.
First determining unit 311 is used to determine that multiple driving chips drive multiple display units to show according to current gain
Current flow adjusted value during per frame data.
Additionally, monochrome information of the computing module 31 when the electric current adjusted value of multiple driving chips is calculated according to monochrome information
Including the 3rd monochrome information and multiple 4th monochrome informations；Wherein, the 3rd monochrome information is every frame data in data to be displayed
Maximum brightness value, multiple 4th monochrome informations are the maximum brightness value of the current data to be shown of multiple display units, Duo Gexian
Show that the current data to be shown of unit constitute every frame data.
Further, computing unit 31 is additionally operable to be calculated respectively often with multiple 4th monochrome informations according to the 3rd monochrome information
The current flow adjusted value of individual driving chip.
Specifically, as shown in figure 5, computing module 31 includes the second computing unit 312 and the second determining unit 313.
Wherein, the second computing unit 312 is used for according to formulaEach driving chip is calculated respectively
The current gain of current gain register；Wherein, L3 is the corresponding brightness value of the 3rd monochrome information, and L4 is multiple 4th brightness
The corresponding brightness value of information, n is the digit of the current gain register in each driving chip, and is positive integer, and Re2 is each
The current gain of the current gain register of driving chip.
Second determining unit 313 is used to determine respectively according to current gain the current flow adjustment of each driving chip
Value.
In embodiments of the present invention, light-emitting diode display is by obtaining the monochrome information of data to be displayed, and according to monochrome information
The electric current adjusted value of multiple driving chips of light-emitting diode display is calculated, and then the multiple of light-emitting diode display is adjusted according to electric current adjusted value
The display brightness of display unit, so as to improve the luminance dynamic adjusting range of the display unit of light-emitting diode display, solves existing
Light-emitting diode display there are problems that the illuminometer Danone caused by luminance dynamic range is low is hypodynamic.
Additionally, the maximum brightness value of data that is shown according to the display unit that driving chip is responsible for of light-emitting diode display with it is every
The maximum brightness value of frame data, obtains the electric current adjusted value of multiple driving chips, and then is adjusted according to the electric current of multiple driving chips
The brightness of the display unit of the whole multiple driving chip each group controls of value adjustment, the brightness of the whole screen of light-emitting diode display is changed with this,
So as to improve the luminance dynamic adjusting range of the display unit of light-emitting diode display.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of display brightness method of adjustment of light-emitting diode display, the light-emitting diode display includes multiple display units and multiple drives
Chip, and driving chip is used to controlling the corresponding display unit carry out data display；It is special
Levy and be, the display brightness method of adjustment includes：
Obtain the monochrome information of data to be displayed；
The electric current adjusted value of multiple driving chips is calculated according to the monochrome information；
The display brightness of multiple display units is adjusted according to the electric current adjusted value.
2. display brightness method of adjustment according to claim 1, it is characterised in that the monochrome information includes the first brightness
Information and the second monochrome information；Wherein, first monochrome information is the maximum brightness value of the data to be displayed, described second
Monochrome information is the maximum brightness value of every frame data in the data to be displayed；It is described that multiple institutes are calculated according to the monochrome information
The electric current adjusted value for stating driving chip is specially：
Calculating multiple driving chips according to first monochrome information and second monochrome information drives multiple described aobvious
Show that unit shows current flow adjusted value during per frame data.
3. display brightness method of adjustment according to claim 2, it is characterised in that described according to first monochrome information
Calculating multiple driving chips with second monochrome information drives multiple display units to show working as during per frame data
Preceding electric current adjusted value is specially：
According to formulaCalculate the current gain of the current gain register in each described driving chip
Value；Wherein, L1 is the corresponding brightness value of first monochrome information, and L2 is the corresponding brightness value of second monochrome information, and n is
The digit of the current gain register in each described driving chip, and be positive integer, during Re1 is each described driving chip
The current gain of current gain register；
When determining that multiple driving chips drive multiple display units to show per frame data according to the current gain
Current flow adjusted value.
4. display brightness method of adjustment according to claim 1, it is characterised in that the monochrome information includes the 3rd brightness
Information and multiple 4th monochrome informations；Wherein, the 3rd monochrome information is the maximum of every frame data in the data to be displayed
Brightness value, multiple 4th monochrome informations are the maximum brightness value of the current data to be shown of multiple display units, many
The current data to be shown of the individual display unit constitute described per frame data；
The electric current adjusted value for calculating multiple driving chips according to the monochrome information is specially：
The current of each driving chip is calculated according to the 3rd monochrome information respectively with multiple the 4th monochrome information
Electric current adjusted value.
5. display brightness method of adjustment according to claim 4, it is characterised in that described according to the 3rd monochrome information
The current flow adjusted value for calculating each driving chip respectively with multiple the 4th monochrome information is specially：
According to formulaThe current gain of the current gain register of each driving chip is calculated respectively
Value；Wherein, L3 is the corresponding brightness value of the 3rd monochrome information, and L4 is the corresponding brightness of multiple the 4th monochrome information
Value, n is the digit of the current gain register in each described driving chip, and is positive integer, and Re2 is each described driving core
The current gain of the current gain register of piece；
Determine the current flow adjusted value of each driving chip respectively according to the current gain.
6. a kind of light-emitting diode display, the light-emitting diode display includes multiple display units and multiple driving chips, and described in one
Driving chip carries out data display for controlling a corresponding display unit；Characterized in that, the LED shows
Device also includes：
Acquisition module, the monochrome information for obtaining data to be displayed；
Computing module, the electric current adjusted value for calculating multiple driving chips according to the monochrome information；
Adjusting module, the display brightness for adjusting multiple display units according to the electric current adjusted value.
7. light-emitting diode display according to claim 6, it is characterised in that the monochrome information include the first monochrome information with
Second monochrome information；Wherein, first monochrome information is the maximum brightness value of the data to be displayed, the second brightness letter
It is the maximum brightness value in the data to be displayed per frame data to cease；
The computing module specifically for：
Calculating multiple driving chips according to first monochrome information and second monochrome information drives multiple described aobvious
Show that unit shows current flow adjusted value during per frame data.
8. light-emitting diode display according to claim 7, it is characterised in that the computing module includes：
First computing unit, for according to formulaCalculate the current gain in each described driving chip
The current gain of register；Wherein, L1 is the corresponding brightness value of first monochrome information, and L2 is second monochrome information
Corresponding brightness value, n is the digit of the current gain register in each described driving chip, and is positive integer, and Re1 is each
The current gain of the current gain register in the driving chip；
First determining unit, for determining that multiple driving chips drive multiple displays single according to the current gain
Current flow adjusted value when unit's display is per frame data.
9. light-emitting diode display according to claim 6, it is characterised in that the monochrome information include the 3rd monochrome information with
Multiple 4th monochrome informations；Wherein, the 3rd monochrome information is the maximum brightness value of every frame data in the data to be displayed,
Multiple 4th monochrome informations are the maximum brightness value of the current data to be shown of multiple display units, multiple described aobvious
Show that the current data to be shown of unit are constituted described per frame data；
The computing module specifically for：
The current of each driving chip is calculated according to the 3rd monochrome information respectively with multiple the 4th monochrome information
Electric current adjusted value.
10. light-emitting diode display according to claim 9, it is characterised in that the computing module includes：
Second computing unit, for according to formulaThe electric current for calculating each driving chip respectively increases
The current gain of beneficial register；Wherein, L3 is the corresponding brightness value of the 3rd monochrome information, and L4 is bright for multiple described four
The corresponding brightness value of degree information, n is the digit of the current gain register in each described driving chip, and is positive integer, Re2
It is the current gain of the current gain register of driving chip each described；
Second determining unit, the current flow for determining each driving chip respectively according to the current gain is adjusted
Value.
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| CN111199707A (en) * | 2020-03-04 | 2020-05-26 | Tcl华星光电技术有限公司 | Display device brightness adjusting device and method |
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