CN106898293B - 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 PDF

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Publication number
CN106898293B
CN106898293B CN201710082254.6A CN201710082254A CN106898293B CN 106898293 B CN106898293 B CN 106898293B CN 201710082254 A CN201710082254 A CN 201710082254A CN 106898293 B CN106898293 B CN 106898293B
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China
Prior art keywords
luminance information
display
current
value
data
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CN201710082254.6A
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Chinese (zh)
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CN106898293A (en
Inventor
刘宇
谢明璞
李选中
吴振志
吴涵渠
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深圳市奥拓电子股份有限公司
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Priority to CN201710082254.6A priority Critical patent/CN106898293B/en
Publication of CN106898293A publication Critical patent/CN106898293A/en
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    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control 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
    • G09G3/22Control 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
    • G09G3/30Control 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
    • G09G3/32Control 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]
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00Control of display operating conditions
    • G09G2320/06Adjustment of display parameters
    • G09G2320/0626Adjustment of display parameters for control of overall brightness

Abstract

The invention belongs to LED technology field, a kind of light-emitting diode display and its display brightness method of adjustment are provided.In the present invention, by the luminance 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 luminance information, and then the display brightness of multiple display units of light-emitting diode display is adjusted according to electric current adjusted value, to improve the luminance dynamic adjusting range of the display unit of light-emitting diode display, solve the problems, such as that existing light-emitting diode display exists because the illuminometer Danone caused by luminance dynamic range is low is hypodynamic.

Description

A kind of light-emitting diode display and its display brightness method of adjustment

Technical field

The invention belongs to LED technology field more particularly to a kind of light-emitting diode display and its display brightness methods of adjustment.

Background technique

In recent years, light-emitting diode display is increasingly used in due to its high brightness, low in energy consumption, steady performance In daily life, for example, being set to the electronic display in the places such as Entertainment Plaza, commercial street, hospital, railway station;This Outside, as the technology of light-emitting diode display develops, light-emitting diode display also initially enters Automobile Design etc. and requires higher industry to display It designs in occasion.

However, being merely able to show red when current light-emitting diode display shows material (video or the picture) of 8bit The pixel value of (Red, R), green (Green, G), blue (Blue, B) component in [0,255], for the material of 10bit, LED is shown Device is at best able to pixel value in [0,1023] of display R, G, B component, and even 1024 different gray scales, also shows The brightness case of light in nature cannot be so indicated, for example, the brightness of the sun outside window may be fluorescent tube in room in some 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, far beyond the brightness ability to express of current light-emitting diode display.

In conclusion existing light-emitting diode display exists because the brightness ability to express caused by luminance dynamic range is low is insufficient The problem of.

Summary of the invention

The purpose of the present invention is to provide a kind of light-emitting diode display and its display brightness methods of adjustment, it is intended to solve existing Light-emitting diode display exist because luminance dynamic range it is low caused by the hypodynamic problem of illuminometer Danone.

The invention is realized in this way a kind of display brightness method of adjustment of light-emitting diode display, the light-emitting diode display include Multiple display units and multiple driving chips, and a driving chip is for controlling a corresponding display Unit displays data;The display brightness method of adjustment includes:

Obtain the luminance information of data to be displayed;

The electric current adjusted value of multiple driving chips is calculated according to the luminance information;

The display brightness of multiple display units is adjusted according to the electric current adjusted value.

Another object of the present invention, which also resides in, provides a kind of light-emitting diode display, and the light-emitting diode display includes multiple display units With multiple driving chips, and driving chip carries out data for controlling the display unit of corresponding one Display;The light-emitting diode display further include:

Module is obtained, for obtaining the luminance information of data to be displayed;

Computing module, for calculating the electric current adjusted value of multiple driving chips according to the luminance information;

Module is adjusted, for adjusting the display brightness of multiple display units according to the electric current adjusted value.

In the present invention, by obtaining the luminance information of data to be displayed, and light-emitting diode display is calculated according to luminance information The electric current adjusted value of multiple driving chips, and then the display of multiple display units according to electric current adjusted value adjustment light-emitting diode display Brightness solves existing light-emitting diode display and deposits to improve the luminance dynamic adjusting range of the display unit of light-emitting diode display The hypodynamic problem of illuminometer Danone caused by low because of luminance dynamic range.

Detailed description of the invention

Fig. 1 is the flow diagram of the display brightness method of adjustment of light-emitting diode display provided by the embodiment of the present invention one;

Fig. 2 is the flow diagram of the display brightness method of adjustment of light-emitting diode display provided by the embodiment of the present invention two;

Fig. 3 is the modular structure schematic diagram of light-emitting diode display provided by the embodiment of the present invention three;

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 objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right 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 attached drawing:

It is a kind of signal stream of the display brightness method of adjustment for light-emitting diode display that the embodiment of the present invention one provides referring to Fig. 1 Cheng Tu.The executing subject of the display brightness method of adjustment of light-emitting diode display in the present embodiment is light-emitting diode display, the light-emitting diode display Including multiple display units and multiple driving chips, and a driving chip is for controlling a corresponding display unit It displays data.The display brightness method of adjustment of the as shown in Figure 1 light-emitting diode display the following steps are included:

S10: the luminance information of data to be displayed is obtained.

Wherein, in embodiments of the present invention, data to be displayed includes but is not limited to picture, video data or audio data Deng, and when light-emitting diode display is when receiving the data to be displayed, it can wait showing according to the acquisition of information that the data to be displayed carries The luminance information of registration.

For example, when the video data that data to be displayed is high dynamic range images (High-Dynamic Range, HDR) When, since HDR standard requirements video needs to carry HDR dynamic metadata in transmission, and the dynamic metadata includes video counts In the maximum brightness of every frame, the average brightness of every frame, the maximum brightness of entire video data, entire video data it is average bright The information such as degree and video transmission interface specification therefore, can be according to the view when light-emitting diode display receives the video data Frequency obtains the luminance information of video to be shown according to the HDR dynamic metadata of carrying.

S11: the electric current adjusted value of multiple driving chips is calculated according to the luminance information.

It wherein, in the present embodiment, is right with it by driving chip control when displaying data due to light-emitting diode display What the display unit answered displayed data, and driving chip mainly passes through constant electricity when controlling corresponding display unit What pulse width modulation (Pulse Width Modulation, the PWM) signal flowed down was realized, but due to according under constant current The brightness range that may be implemented when the display brightness of pwm signal adjustment display unit is relatively low, and therefore, light-emitting diode display is obtaining To after the luminance information of data to be displayed, the electric current adjusted value of multiple driving chips can be calculated according to luminance information, according to electricity Stream adjusted value adjusts the display brightness of multiple display units.

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 be adjusted in real time according to respective electric current adjusted value in 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, thus realize according to electric current adjust display unit display brightness, so as to improve display unit in light-emitting diode display Luminance dynamic adjusting range.

In embodiments of the present invention, light-emitting diode display passes through the luminance information for obtaining data to be displayed, and according to luminance 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 are adjusted according to electric current adjusted value The display brightness of display unit solves existing to improve the luminance dynamic adjusting range of the display unit of light-emitting diode display Light-emitting diode display exist because luminance dynamic range it is low caused by the hypodynamic problem of illuminometer Danone.

Referring to fig. 2, be a kind of light-emitting diode display provided by Embodiment 2 of the present invention display brightness method of adjustment signal stream Cheng Tu.The executing subject of the display brightness method of adjustment of light-emitting diode display in the present embodiment is light-emitting diode display, the light-emitting diode display Including multiple display units and multiple driving chips, and a driving chip is for controlling a corresponding display unit It displays data.The display brightness method of adjustment of the as shown in Figure 2 light-emitting diode display the following steps are included:

S20: the luminance information of data to be displayed is obtained.

Wherein, in embodiments of the present invention, data to be displayed includes but is not limited to picture, video data or audio data Deng, and when light-emitting diode display is when receiving the data to be displayed, it can wait showing according to the acquisition of information that the data to be displayed carries The luminance information of registration.

For example, when the video data that data to be displayed is high dynamic range images (High-Dynamic Range, HDR) When, since HDR standard requirements video needs to carry HDR dynamic metadata in transmission, and the dynamic metadata includes video counts In the maximum brightness of every frame, the average brightness of every frame, the maximum brightness of entire video data, entire video data it is average bright The information such as degree and video transmission interface specification therefore, can be according to the view when light-emitting diode display receives the video data Frequency obtains the luminance information of video to be shown according to the HDR dynamic metadata of carrying.

S21: the electric current adjusted value of multiple driving chips is calculated according to the luminance information.

It wherein, in the present embodiment, is right with it by driving chip control when displaying data due to light-emitting diode display What the display unit answered displayed data, and driving chip mainly passes through constant electricity when controlling corresponding display unit What pulse width modulation (Pulse Width Modulation, the PWM) signal flowed down was realized, but due to according under constant current The brightness range that may be implemented when the display brightness of pwm signal adjustment display unit is relatively low, and therefore, light-emitting diode display is obtaining To after the luminance information of data to be displayed, the electric current adjusted value of multiple driving chips can be calculated according to luminance information, according to electricity Stream adjusted value adjusts the display brightness of multiple display units.

Further, the electric current adjusted value of multiple driving chips is calculated according to the luminance information specifically:

S210: the luminance information includes the first luminance information and the second luminance information;According to first luminance information Calculating multiple driving chips with second luminance information drives multiple display units to show working as when every frame data Preceding electric current adjusted value.

Wherein, in embodiments of the present invention, the first luminance information is the maximum brightness value of data to be displayed, the second brightness letter Breath is the maximum brightness value of every frame data in data to be displayed.

For example, the first luminance information is the maximum of entire HDR video data when data to be displayed is HDR video data Brightness value, and the second luminance information is the maximum brightness value of every frame data in HDR video data, and in the HDR video data The maximum brightness value of every frame data is not quite similar.

It should be noted that in embodiments of the present invention, since light-emitting diode display is to pass through when showing HDR video data Picture high speed Dynamically Announce one by one therefore, can be according to the frame when light-emitting diode display is when showing every frame HDR video data What the maximum brightness value of HDR video data and the maximum brightness value of entirety HDR video data obtained multiple driving chips works as electric current Adjusted value, and the current flow adjusted value of multiple driving chip is identical one value.

Further, multiple driving chips are calculated according to first luminance information and second luminance information to drive Move current flow adjusted value when the multiple display unit shows every frame data specifically:

According to formulaThe electric current for calculating the current gain register in each driving chip increases Benefit value;Wherein, L1 is the corresponding brightness value of first luminance information, and L2 is the corresponding brightness value of second luminance information, n It for the digit of the current gain register in each driving chip, and is positive integer, Re1 is in each driving chip Current gain register current gain;

Determine that multiple driving chips drive multiple display units to show every 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 setting 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 of every frame data, light-emitting diode display can basisIt calculates in each driving chip Current gain register current gain.

For example, when the maximum brightness value of data to be displayed is 255, and the maximum brightness of this frame data is 64, and each drive When the digit of the current gain register of dynamic chip is 8, light-emitting diode display can basisIt obtains 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 working as when multiple driving chips drive multiple display units to show every frame data according to the current gain Preceding current value, specifically, light-emitting diode display can be closed with the mapping between current gain according to the pre-stored data and electric current adjusted value 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, it 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 every frame data refer to this frame data that light-emitting diode display is currently shown.

Below to the display brightness method of adjustment of light-emitting diode display of the invention by taking data to be displayed is 10bit material as an example It is illustrated:

When data to be displayed is 10bit material, regardless of data to be displayed is that video data, audio data are either schemed Piece, R, G, B component at most can reach 1023 grey levels during display, and when light-emitting diode display is using the electric current of default Yield value 128, i.e., when being 20 milliamperes of display data to be displayed corresponding to the current value of driving chip, current in light-emitting diode display White balance brightness is on the basis of 1000 nits, light-emitting diode display also can only during adjusting the display brightness of display unit It is the corresponding grey level of a nit, and works as and be adjusted to the current gain of the middle current gain register of driving chip When 64, i.e., the corresponding current value with driving chip is 10 milliamperes come when showing data to be displayed, in current white flat of light-emitting diode display Brightness weigh as 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 member, it can be adjusted using the corresponding grey level of 0.5 nit, to substantially increase The display brightness dynamic adjusting range of display unit, and increase expressing gradation of light-emitting diode display when low bright.

Further, the electric current adjusted value of multiple driving chips is calculated according to the luminance information specifically:

S211: the luminance information includes third luminance information and multiple 4th luminance informations;According to the third brightness Information and multiple 4th luminance informations calculate separately the current flow adjusted value of each driving chip.

Wherein, in example in real time of the invention, third luminance information is the maximum brightness value of every frame data in data to be displayed, Multiple 4th luminance informations are the maximum brightness value of the current data to be shown of multiple display units, multiple display units currently to The data of display constitute every frame data.

Specifically, since each driving chip is responsible for the display of a display unit of light-emitting diode display, 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 whole image maximum brightness value, the small block data which is responsible for Gray value is the 4th luminance information, and the maximum brightness value of the whole image is third luminance information.

For example, third luminance information is every frame data in HDR video data when data to be displayed is HDR video data Maximum brightness value, and multiple 4th luminance informations are 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 is showing every frame HDR When video data, the multiple display lists that can be responsible for according to the maximum brightness value of frame HDR video data and multiple driving chips In member the maximum brightness value of data obtain multiple driving chips when electric current adjusted value, and the current electricity of multiple driving chip Stream adjusted value is multiple values.

Further, each drive is calculated separately according to the third luminance information and multiple 4th luminance informations The current flow adjusted value of dynamic chip specifically:

According to formulaCalculate separately the electric current of the current gain register of each driving chip Yield value;Wherein, L3 is the corresponding brightness value of the third luminance information, and L4 is that multiple 4th luminance informations are corresponding bright Angle value, n are the digit of the current gain register in each driving chip, and are positive integer, and Re2 is each 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 setting 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 in the maximum brightness value for obtaining every frame data After the maximum brightness value for the data that the multiple display units being responsible for multiple driving chips are shown, 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 of every frame data is 255, and the first display unit that the first driving chip is responsible for is aobvious The maximum brightness value for the data shown is 32, the maximum brightness for the data that the second display unit that the second driving chip is responsible for is shown Value is 64, and the maximum brightness value for the data that the third display unit that third driving chip is responsible for is shown is 48, and each driving 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 a driving chip, according toObtain the second drive The current gain 64 of the current gain register of dynamic chip, and according toObtain third 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 working as when multiple driving chips drive multiple display units to show every frame data according to the current gain Preceding current value, specifically, light-emitting diode display can be closed with the mapping between current gain according to the pre-stored data and electric current adjusted value System determines the electric current adjusted value of multiple driving chips, for example, when light-emitting diode display gets the current gain of first driving chip It, can be according to reflecting between the current gain 32 and the electric current adjusted value of the first driving chip after the current gain 32 of register Relationship 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 It, can be according to the current gain 64 and the second driving chip after the current gain 64 of the current gain register of a driving chip 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; It, can be according to the electric current after light-emitting diode display gets current gain 48 of the current gain register of third driving chip Mapping relations between yield value 48 and the electric current adjusted value of third driving chip, the electric current adjusted value of third driving chip is equal It is adjusted to and the 48 corresponding value;It should be noted that every frame data refer to that light-emitting diode display is currently shown in the embodiment of the present invention This frame data shown.

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 be adjusted in real time according to respective electric current adjusted value in 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, thus realize according to electric current adjust display unit display brightness, so as to improve display unit in light-emitting diode display Luminance dynamic adjusting range.

Specifically, when the electric current adjusted value for multiple driving chips that light-emitting diode display obtains 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 when multiple driving cores of light-emitting diode display acquisition When the electric current adjusted value of piece is not quite similar, then light-emitting diode display adjusts driving chip according to the respective electric current adjusted value of driving chip The display brightness of the display unit respectively controlled changes the brightness of the entire screen of light-emitting diode display with this.

In embodiments of the present invention, light-emitting diode display passes through the luminance information for obtaining data to be displayed, and according to luminance 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 are adjusted according to electric current adjusted value The display brightness of display unit solves existing to improve the luminance dynamic adjusting range of the display unit of light-emitting diode display Light-emitting diode display exist because luminance dynamic range it is low caused by the hypodynamic problem of illuminometer Danone.

In addition, the maximum brightness value for the data that light-emitting diode display is shown according to the display unit that driving chip is responsible for and every The maximum brightness value of frame data obtains the electric current adjusted value of multiple driving chips, and then according to the electric current tune of multiple driving chips Whole value adjusts the brightness of the display unit of multiple driving chip each group controls, changes the brightness of the entire screen of light-emitting diode display with this, To improve the luminance dynamic adjusting range of the display unit of light-emitting diode display.

It is a kind of schematic block diagram for light-emitting diode display 3 that the embodiment of the present invention three provides, the light-emitting diode display 3 referring to Fig. 3 Including multiple display unit (not shown)s and multiple driving chip (not shown)s, and a driving chip is for controlling A corresponding display unit is made to display data.Each module that the light-emitting diode display of the present embodiment includes is for executing Each step in the corresponding embodiment of Fig. 1 and Fig. 2, referring specifically in Fig. 1, Fig. 2 and Fig. 1 and the corresponding embodiment of Fig. 2 Associated description does not repeat herein.The light-emitting diode display 3 of the present embodiment includes obtaining module 30, computing module 31 and adjustment module 32。

Module 30 is obtained, for obtaining the luminance information of data to be displayed.

Computing module 31, for calculating the electric current adjusted value of multiple driving chips according to luminance information.

Module 32 is adjusted, for adjusting the display brightness of multiple display units according to electric current adjusted value.

Wherein, luminance information of the computing module 31 when calculating the electric current adjusted value of multiple driving chips according to luminance information Including the first luminance information and the second luminance information;Wherein, the first luminance information be data to be displayed maximum brightness value, second Luminance information is the maximum brightness value of every frame data in data to be displayed.

Further, computing module 31 is also used to calculate multiple driving cores according to the first luminance information and the second luminance information Current flow adjusted value when piece drives multiple display units to show every frame data.

Specifically, as shown in figure 4, computing module 31 includes the first computing unit 310 and the first determination 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 luminance information, and L2 is the second luminance information pair The brightness value answered, n are the digit of the current gain register in each driving chip, and are positive integer, and Re1 is each driving core The current gain of current gain register in piece.

First determination unit 311 is used to determine that multiple driving chips drive multiple display units to show according to current gain Current flow adjusted value when every frame data.

In addition, luminance information of the computing module 31 when calculating the electric current adjusted value of multiple driving chips according to luminance information Including third luminance information and multiple 4th luminance informations;Wherein, third luminance information is every frame data in data to be displayed Maximum brightness value, multiple 4th luminance 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 also used to be calculated separately often according to third luminance information and multiple 4th luminance informations The current flow adjusted value of a driving chip.

Specifically, as shown in figure 5, computing module 31 includes the second computing unit 312 and the second determination unit 313.

Wherein, the second computing unit 312 is used for according to formulaCalculate separately each driving chip Current gain register current gain;Wherein, L3 is the corresponding brightness value of third luminance information, and L4 is multiple four bright The corresponding brightness value of information is spent, n is the digit of the current gain register in each driving chip, and is positive integer, and Re2 is every The current gain of the current gain register of a driving chip.

Second determination unit 313 is used to determine the current flow adjustment of each driving chip respectively according to current gain Value.

In embodiments of the present invention, light-emitting diode display passes through the luminance information for obtaining data to be displayed, and according to luminance 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 are adjusted according to electric current adjusted value The display brightness of display unit solves existing to improve the luminance dynamic adjusting range of the display unit of light-emitting diode display Light-emitting diode display exist because luminance dynamic range it is low caused by the hypodynamic problem of illuminometer Danone.

In addition, the maximum brightness value for the data that light-emitting diode display is shown according to the display unit that driving chip is responsible for and every The maximum brightness value of frame data obtains the electric current adjusted value of multiple driving chips, and then according to the electric current tune of multiple driving chips Whole value adjusts the brightness of the display unit of multiple driving chip each group controls, changes the brightness of the entire screen of light-emitting diode display with this, To improve the luminance dynamic adjusting range of the display unit of light-emitting diode display.

The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.

Claims (6)

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 drivings Chip, and a driving chip is displayed data for controlling a corresponding display unit;It is special Sign is that the display brightness method of adjustment includes:
Obtain the luminance information of data to be displayed;
The electric current adjusted value of multiple driving chips is calculated according to the luminance information;
The display brightness of multiple display units is adjusted according to the electric current adjusted value;
The luminance information includes the first luminance information and the second luminance information;Wherein, first luminance information be it is described to Show the maximum brightness value of data, second luminance information is the maximum brightness value of every frame data in the data to be displayed; The electric current adjusted value that multiple driving chips are calculated according to the luminance information specifically:
It is multiple described aobvious that multiple driving chip drivings are calculated according to first luminance information and second luminance information Show current flow adjusted value when unit shows every frame data;
It is described that the multiple institutes of multiple driving chips drivings are calculated according to first luminance information and second luminance information State current flow adjusted value when display unit shows every frame data specifically:
According to formulaCalculate the current gain of the current gain register in each driving chip Value;Wherein, L1 is the corresponding brightness value of first luminance information, and L2 is the corresponding brightness value of second luminance information, and n is The digit of current gain register in each driving chip, and be positive integer, Re1 is in each driving chip The current gain of current gain register;
When determining that multiple driving chips drive multiple display units to show every frame data according to the current gain Current flow adjusted value.
2. display brightness method of adjustment according to claim 1, which is characterized in that the luminance information includes third brightness Information and multiple 4th luminance informations;Wherein, the third luminance information is the maximum of every frame data in the data to be displayed Brightness value, multiple 4th luminance informations are the maximum brightness value of the current data to be shown of multiple display units, more The current data to be shown of a display unit constitute every frame data;
The electric current adjusted value that multiple driving chips are calculated according to the luminance information specifically:
The current of each driving chip is calculated separately according to the third luminance information and multiple 4th luminance informations Electric current adjusted value.
3. display brightness method of adjustment according to claim 2, which is characterized in that described according to the third luminance information The current flow adjusted value of each driving chip is calculated separately with multiple 4th luminance informations specifically:
According to formulaCalculate separately the current gain of the current gain register of each driving chip Value;Wherein, L3 is the corresponding brightness value of the third luminance information, and L4 is the corresponding brightness of multiple 4th luminance informations Value, n are the digit of the current gain register in each driving chip, and are positive integer, and Re2 is each 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.
4. 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 is displayed data for controlling a corresponding display unit;It is characterized in that, the LED is shown Device further include:
Module is obtained, for obtaining the luminance information of data to be displayed;
Computing module, for calculating the electric current adjusted value of multiple driving chips according to the luminance information;
Module is adjusted, for adjusting the display brightness of multiple display units according to the electric current adjusted value;
The luminance information includes the first luminance information and the second luminance information;Wherein, first luminance information be it is described to Show the maximum brightness value of data, second luminance information is the maximum brightness value of every frame data in the data to be displayed;
The computing module is specifically used for:
It is multiple described aobvious that multiple driving chip drivings are calculated according to first luminance information and second luminance information Show current flow adjusted value when unit shows every frame data;
The computing module includes:
First computing unit, for according to formulaCalculate the current gain in each driving chip The current gain of register;Wherein, L1 is the corresponding brightness value of first luminance information, and L2 is second luminance information Corresponding brightness value, n is the digit of the current gain register in each driving chip, and is positive integer, and Re1 is each The current gain of current gain register in the driving chip;
First determination unit, for determining that multiple multiple displays of driving chip driving are single according to the current gain Member shows current flow adjusted value when every frame data.
5. light-emitting diode display according to claim 4, which is characterized in that the luminance information include third luminance information with Multiple 4th luminance informations;Wherein, the third luminance information is the maximum brightness value of every frame data in the data to be displayed, Multiple 4th luminance 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 constitute every frame data;
The computing module is specifically used for:
The current of each driving chip is calculated separately according to the third luminance information and multiple 4th luminance informations Electric current adjusted value.
6. light-emitting diode display according to claim 5, which is characterized in that the computing module includes:
Second computing unit, for according to formulaThe electric current for calculating separately each driving chip increases The current gain of beneficial register;Wherein, L3 is the corresponding brightness value of the third luminance information, and L4 is multiple described four bright The corresponding brightness value of information is spent, n is the digit of the current gain register in each driving chip, and is positive integer, Re2 For the current gain of the current gain register of each driving chip;
Second determination unit, for determining that the current flow of each driving chip adjusts respectively according to the current gain Value.
CN201710082254.6A 2017-02-16 2017-02-16 A kind of light-emitting diode display and its display brightness method of adjustment CN106898293B (en)

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