CN108305588A - Display device - Google Patents
Display device Download PDFInfo
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- CN108305588A CN108305588A CN201810108315.6A CN201810108315A CN108305588A CN 108305588 A CN108305588 A CN 108305588A CN 201810108315 A CN201810108315 A CN 201810108315A CN 108305588 A CN108305588 A CN 108305588A
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- Prior art keywords
- brightness
- source
- led source
- liquid crystal
- current
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Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3406—Control of illumination source
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/10—Controlling the intensity of the light
- H05B45/14—Controlling the intensity of the light using electrical feedback from LEDs or from LED modules
Abstract
A kind of display device comprising backlight, liquid crystal display panel, driving circuit and brightness controlling device, backlight are realized with LED source.Backlight provides light to liquid crystal display panel, driving circuit is controlling the torsion of multiple liquid crystal of multiple pixels in liquid crystal display panel, brightness controlling device is detecting the temperature of LED source, obtain the prediction model obtained based on deep learning algorithm, and it is based on prediction model, the operation driving current of corresponding brightness predetermined value is calculated to LED source according to temperature detecting value and brightness settings.The display device will not be because of the influence of the temperature of LED source, and the brightness of display device and setting brightness value is caused to have larger deviation.
Description
Technical field
The present embodiments relate to a kind of display technologies, in particular to a kind of display device.
Background technology
Have the display device of backlight, such as liquid crystal display device in example, uses LED source as the back of the body
Light source, and the brightness of in general display device can be by user's either operating system come adjust automatically, therefore, display dress
Set the brightness controlling device for needing to configure and being useful for control LED source.
Example includes light-emitting diode current controller, RC for controlling the brightness controlling device of LED source
Filter circuit, current regulator, resistance, capacitance and diode.
Light-emitting diode current controller generates drive signal according to the voltage of backtracking, and RC filter circuits are to driving letter
It number is filtered, and gives filtered drive signal to current regulator, current regulator is believed further according to filtered driving
Number adjustment LED source operation driving current.
Since the electrical characteristic of LED source may be variant because of usage time or temperature, therefore pass through hair
The operation driving current of optical diode light source may be because usage time or temperature and change, and LED source is caused to send out
Brightness change, and the brightness controlling device of example and can not solve the problems, such as this.
It is locked in scheduled driving current although driving current will be operated using the method compared by having in example, so that luminous two
Pole pipe light source has corresponding brightness.However, LED source actually may be because other factors to the brightness of human eye
And have variation, such as ambient light may influence impression of the human eye to same brightness.In addition, even if having same operation driving electricity
Stream, LED source may be because temperature and usage time and have different brightness.Furthermore use LED source
The brightness of lighting apparatus and the light emitting source of display device may be because the influence of intermediate other assemblies, cause to finally proceed to human eye
Brightness can be variant.In other words, the brightness controlling device of example still has improved space with method.
Invention content
At least one technical problem based on prior art to be solved and/or at least one technology effect that reach the present invention
Fruit, the present invention provide a kind of display device of controlling back light source brightness, will not be because of the temperature of LED source
It influences, and the brightness of display device and setting brightness value is caused to have larger deviation.
Based on aforementioned technical problems to be solved, the embodiment of the present invention provides a kind of display device comprising：
Backlight is realized with LED source；
Liquid crystal display panel, wherein the backlight provides light to the liquid crystal display panel；
Driving circuit is electrically connected liquid crystal display panel, to control multiple liquid of multiple pixels in the liquid crystal display panel
Brilliant torsion；And
Brightness controlling device is electrically connected the backlight, and to detect the temperature of the LED source, acquirement is based on
The prediction model that deep learning algorithm obtains, and it is based on the prediction model, according to temperature detecting value and brightness settings meter
The operation driving current of the corresponding brightness predetermined value is calculated to the LED source.
Optionally, the brightness controlling device includes：
Temperature detecting unit, to detect the temperature of the LED source, to obtain the temperature detecting value；
Brightness settings unit, to provide the brightness settings；
Adjustable current source is electrically connected the LED source, to provide the operation driving current to the hair
Optical diode light source；And
Current controller based on deep learning, be electrically connected the temperature detecting unit, the brightness settings unit with it is described
Adjustable current source calculates pair to be based on the prediction model according to the temperature detecting value and the brightness settings
The operation driving current of the brightness settings is answered, and it is calculated to generate the control signal control adjustable current source offer
The operation driving current gives the LED source.
Optionally, the display device further includes：Power supply unit is electrically connected the backlight, the liquid crystal display
Panel, the driving circuit and the brightness controlling device, to provide power to the backlight, the LCD display
Plate, the driving circuit and the brightness controlling device.
Optionally, the brightness controlling device further includes：Environmental light brightness detector is electrically connected described based on depth
The current controller of habit, to detect ambient light, to obtain environment bright angle value；The wherein described electric current control based on deep learning
Device processed more receives the environment bright angle value, wherein the operation driving current is more relevant in the environment bright angle value.
Optionally, the Light-Emitting Diode light source includes an at least light emitting diode.
Optionally, the adjustable current source includes：Resistance；And switch transistor, gate is receiving the control
Signal processed, base stage are electrically described to the LED source and its source electrode to provide the operation driving current
Resistance.
Optionally, the current controller based on deep learning is calculated using class neural network or support vector machines is calculated
Method.
Optionally, the current controller based on deep learning is based on the prediction model, according to the temperature detecting
Value, the brightness settings and the environment bright angle value calculate the operation driving current；Alternatively, described be based on depth
The current controller of habit is based on the prediction model, and the behaviour is calculated according to the temperature detecting value and the brightness settings
Make driving current, it is then described that the operation drive is adjusted according to the environment bright angle value based on the current controller of deep learning
Streaming current.
Optionally, it controls the switch transistor through the control signal to open or close, be driven with adjusting the operation
Streaming current.
Based on aforementioned technical problems to be solved, the embodiment of the present invention provides a kind of display device comprising：
Backlight is realized with LED source；
Liquid crystal display panel, wherein the backlight provides light to the liquid crystal display panel；
Driving circuit is electrically connected liquid crystal display panel, to control multiple liquid of multiple pixels in the liquid crystal display panel
Brilliant torsion；
Brightness controlling device is electrically connected the backlight, and to detect the temperature of the LED source, acquirement is based on
The prediction model that deep learning algorithm obtains, and it is based on the prediction model, according to temperature detecting value and brightness settings meter
The operation driving current of the corresponding brightness predetermined value is calculated to the LED source；And
Power supply unit is electrically connected the backlight, the liquid crystal display panel, the driving circuit and the brightness and controls
Device fills to provide power to the backlight, the liquid crystal display panel, the driving circuit and brightness control
It sets；The wherein described brightness controlling device includes：
Temperature detecting unit, to detect the temperature of the LED source, to obtain the temperature detecting value；
Brightness settings unit, to provide the brightness settings；
Adjustable current source is electrically connected the LED source, to provide the operation driving current to the hair
Optical diode light source；And
Current controller based on deep learning, be electrically connected the temperature detecting unit, the brightness settings unit with it is described
Adjustable current source calculates pair to be based on the prediction model according to the temperature detecting value and the brightness settings
The operation driving current of the brightness settings is answered, and it is calculated to generate the control signal control adjustable current source offer
The operation driving current gives the LED source.
Accordingly, the display device of controlling back light source provided in an embodiment of the present invention brightness will not be because of light emitting diode light
The influence of the temperature in source, and the brightness of display device and setting brightness value is caused to have larger deviation.The present invention more considers environment
The influence of brightness, to adjust the operation driving current of LED source so that display device can reach power saving and/or compared with
The purpose of good display effect.
Description of the drawings
Fig. 1 is the block diagram of the display device of the embodiment of the present invention.
Fig. 2 is the block diagram of the brightness controlling device for controlling LED source of the embodiment of the present invention.
Fig. 3 is the block diagram of the display device of another embodiment of the present invention.
Fig. 4 is the block diagram of the brightness controlling device for controlling LED source of another embodiment of the present invention.
Fig. 5 is the block diagram of the display device of another embodiment of the present invention.
Fig. 6 is the block diagram of the brightness controlling device for controlling LED source of the embodiment of the present invention.
Specific implementation mode
It will be apparent, however, that numerous specific details are set forth, in order to provide to each embodiment
It understands thoroughly.However, it will be apparent that, it can be real in the case of these no details or one or more equivalents
Trample various embodiments.In other instances, well known construction and device is shown with block diagram, to avoid unnecessarily obscuring
Various embodiments.
Unless otherwise indicated, shown embodiment will be understood as providing the feature of the different details of various embodiments.
Therefore, unless otherwise stated, in the case where not departing from disclosed embodiment, the feature of various diagrams, component, mould
In addition group, floor, film, panel, area and/or aspect can be combined, detach, exchange and/or be rearranged.In addition, in the accompanying drawings, in order to
It clearly describes, the size and relative size in floor, film, panel, area etc. may be exaggerated.When that differently can realize embodiment,
It can be different from described sequence and execute specific processing sequence.It is continuously described for example, two can substantially simultaneously be executed
Processing is executed with the sequence opposite with described sequence.In addition, identical component symbol indicates identical element.
An embodiment of the present invention provides a kind of display device, backlight is LED source, and the display fills
It sets with the brightness controlling device for controlling LED source, directly detects setting using LED source
Standby brightness, and after device brightness detecting value is compared with the setting brightness value that user sets, produced according to comparison result
Life is to change the control signal of the driving operation electric current of LED source, so that the brightness of display device and setting are bright
Angle value is similar, without the influence of the other assemblies because of the temperature of LED source, usage time or display device, and
The brightness and setting brightness value for leading to display device have larger deviation.Optionally, the brightness control that the display device has
Device more considers the influence of environmental light brightness, and drives electricity according to environmental light brightness to adjust the operation of LED source
Stream.
Briefly, the present invention directly measures LED source（Or its display device）The brightness of example, if making
When user will set some brightness, according to the brightness of LED source example whether with setting brightness difference whether exceed
Range, directly adjustment operation driving current.Further, the present invention carries out operation driving current also according to environmental light brightness micro-
Adjustment, so that the close setting brightness of last intrinsic brilliance, and display device is enable to reach power saving and/or optional display effect
Purpose.
Fig. 1 is please referred to, Fig. 1 is the block diagram of the display device of the embodiment of the present invention.Display device 2 includes power supply unit
21, backlight 22, liquid crystal display panel 23, driving circuit 24 and brightness controlling device 25.Power supply unit 21 is electrically connected the back of the body
Light source 22, liquid crystal display panel 23, driving circuit 24 and brightness controlling device 25, driving circuit 24 are electrically connected LCD display
Plate 23 and brightness controlling device 25 are electrically connected backlight 22.
Power supply unit 21 is providing power to backlight 22, liquid crystal display panel 23, driving circuit 24 and brightness control
Device 25 processed.Driving circuit 24 includes gate pole driver（Figure is not painted）With data driver（Figure is not painted）, to control
The torsion of multiple liquid crystal of multiple pixels of liquid crystal display panel 23 processed, to show image.Backlight 22 is by light emitting diode light
Source is realized, to emit the light of corresponding brightness to liquid crystal display panel 23 according to operation driving current.However, above-mentioned
Liquid crystal display panel 23 can be TN（Twisted Nematic, twisted-nematic）Liquid crystal display panel, IPS（In-Plane
Switching, plane conversion）Liquid crystal display panel, PLS（Plane to Line Switching, interplanar switching）Liquid crystal
Show panel or MVA（Multi-domain Vertical Alignment, multi-domain vertical alignment）Liquid crystal display panel etc..Pass through
Above-mentioned various types of liquid crystal display panel 23 and power supply unit 21 and driving circuit 24 are electrically connected, you can effectively reach with
The identical effect of the present invention.
Brightness controlling device 25 is to detect the brightness of the light emitted by liquid crystal display panel 23, and to obtain equipment
Luminance detection value.In another embodiment, brightness controlling device 25 can also directly detect the brightness of backlight 22, to obtain
Device brightness detecting value.Then, brightness controlling device 25 compares setting measurement value with device brightness detecting value to generate control letter
Number, with the operation driving current through the adjustment of control signal for light source 22.
Then, the details of brightness controlling device 25 is further explained.Fig. 2 is please referred to, Fig. 2 is the use of the embodiment of the present invention
In the block diagram of the brightness controlling device of control LED source.For controlling LED source BS（Including at least
One light emitting diode is multiple light emitting diodes of series winding in this embodiment）Brightness controlling device 3 include brightness settings
Unit 31, LED current controller 32, adjustable current source 33 and device brightness detector 34, wherein light emitting diode
Current controller 32 is electrically connected brightness settings unit 31, adjustable current source 33 and device brightness detector 34, and can adjust
Current source 33 is electrically connected LED source BS.
Device brightness detector 34 can be for example light receiving diode, and LED source is relevant to obtain
Device brightness detecting value corresponding to the brightness of BS, device brightness detecting value be use LED source BS equipment it is bright
Degree, if wherein the influence without other assemblies, device brightness detecting value are the brightness of LED source BS.Brightness settings unit
31 to user's operation or to transfer to operating system to be automatically brought into operation, to generate brightness settings, and will provide brightness settings to
LED current controller 32.
LED source BS is given in adjustable current source 33 to provide operation driving current, and is controlled by light-emitting diodes
Signal is controlled caused by tube current controller 32, to adjust operation driving current.Adjustable current source 33 can penetrate switch
Transistor M1 realizes that but the present invention is not limited thereto with resistance R1.The gate of switching transistor M1 receives control signal, switch
The source electrode of transistor M1 is electrically connected low-voltage VSS through resistance R1, and the both ends of LED source are electrically connected
The base stage of high voltage VDD and switching transistor M1.Through control switching transistor M1 switch, it is equivalent on can change luminous two
The operation driving current of pole pipe light source BS.
LED current controller 32 compares device brightness detecting value and brightness settings, and signal is controlled to generate
Control the operation driving current that adjustable current source 33 changes LED source BS.Further, LED current
Controller 32 is to judge whether the difference between device brightness detecting value and brightness settings goes beyond the scope, further to generate control
Signal processed.When the difference between device brightness detecting value and brightness settings without departing from, then no longer increase or decrease operation driving
Electric current；On the contrary, operation driving current is then increased or decreased, to increase or decrease equipment sensing brightness value, so that equipment
Detecting brightness value, which levels off to, sets brightness value.It is that brightness settings are such as set as by 300 ~ 800 streams by brightness settings unit 31
When bright (Lumen), if luminance detection value exceeds set restriction range, LED current controller 32 will produce control
Signal processed is to carry out above-mentioned action.
In the embodiment of the present invention, more it is contemplated that the influence of environmental light brightness.Due to when environmental light brightness is brighter, people
Eye to the variation of device brightness than less sensitive, therefore, device brightness detecting value can be adjusted it is more relatively low than setting brightness value,
But the difference between device brightness detecting value and setting brightness value does not go beyond the scope yet.In addition, when environmental light brightness is dark, people
Eye is more sensitive to the variation of device brightness, therefore, can be by the adjustment of device brightness detecting value higher than setting brightness value, but
Difference between device brightness detecting value and setting brightness value does not go beyond the scope yet.In this way, brightness controlling device 3 can reach province
Electricity and/or preferably display（Illumination）The purpose of effect.
In Fig. 2, brightness controlling device 3 further includes environmental light brightness detector 35, and 35 electricity of environmental light brightness detector
Property connection LED current controller 32, wherein environmental light brightness detector 35 may, for example, be light receiving diode.Hair
Optical diode current controller 32 can drive according to the ambient light sample angle value that environmental light brightness detector 35 obtains to finely tune operation
Streaming current, so that device brightness detecting value adjustment ground is more high or low than setting brightness value, but device brightness detecting value and setting
Difference between brightness value does not go beyond the scope yet.
The display device of previous embodiment has brightness controlling device, can make brightness and the setting brightness of display device
Be worth it is similar, without because the other assemblies of the temperature of LED source, usage time or display device influence, and lead
The brightness and setting brightness value for causing display device have larger deviation.In addition, the brightness controlling device of the display device is more examined
Consider the influence of environmental light brightness, and adjust the operation driving current of LED source according to environmental light brightness, so that aobvious
Showing device can achieve the purpose that power saving and/or preferable display effect.
Another embodiment of the present invention provides a kind of display device, and backlight is LED source, and described aobvious
Showing device has the brightness controlling device for controlling LED source, and prediction is trained using deep learning algorithm
Model so can accurately calculate LED source based on prediction model according to brightness settings and temperature detecting value
Required operation driving current, and control signal is generated accordingly to control operation driving current.Thus, shine
The brightness of diode light-source can approach brightness settings, without because temperature changes, leading to the brightness of optical diode light source
Deviate brightness settings.Briefly, the present invention will not be because of the influence of the temperature of LED source, and display is caused to fill
The brightness and brightness settings set have larger deviation.
Optionally, the present invention more considers the influence of environmental light brightness, and adjusts light emitting diode according to environmental light brightness
The operation driving current of light source so that last intrinsic brilliance is close to setting brightness, and enable display device reach power saving with/
Or the purpose of preferable display effect.
In addition, aforementioned depth study algorithm can be come in fact through class neural network algorithm or support vector machines algorithm
It is existing.Further, before brightness controlling device manufacture, prediction model, later, brightness controlling device are first trained according to training set
Just it can be based on prediction model, the operation used needed for LED source is calculated according to temperature detecting value and brightness settings
Driving current.Aforementioned training set is more known temperature detecting values, more known brightness settings and makes its light-emitting diodes
The brightness of pipe light source is equal to multiple known operation driving currents corresponding to more known brightness settings.With class nerve net
From the point of view of roadshow algorithm, training set can to find out class neural network each node weight, to train prediction model.
Fig. 3 is please referred to, Fig. 3 is the block diagram of the display device of the controlling back light source brightness of another embodiment of the present invention.
Display device 4 includes power supply unit 41, backlight 42, liquid crystal 43, driving circuit 44 and brightness controlling device 45.Power supply is supplied
Device 41 is electrically connected backlight 42, liquid crystal display panel 43, driving circuit 44 and brightness controlling device 45, and driving circuit 44 is electrical
It connects liquid crystal display panel 43 and brightness controlling device 45 is electrically connected backlight 42.
Power supply unit 41 is providing power to backlight 42, liquid crystal display panel 43, driving circuit 34 and brightness control
Device 45 processed.Driving circuit 44 includes gate pole driver（Figure is not painted）With data driver（Figure is not painted）, to control
The torsion of multiple liquid crystal of multiple pixels of liquid crystal display panel 43 processed, to show image.Backlight 42 is by light emitting diode light
Source is realized, to emit the light of corresponding brightness to liquid crystal display panel 43 according to operation driving current.
Brightness controlling device 45 to obtain based on deep learning algorithm train come prediction model, and based on pre-
Survey operation drive of the brightness equal to brightness settings that model calculates backlight 42 of sening as an envoy to according to temperature detecting value and brightness settings
Streaming current is obtained to backlight 42, wherein temperature detecting value for the temperature of the detecting backlight 42 of brightness controlling device 45.It is optional
Ground, brightness controlling device 45 can also detect environmental light brightness by luminance detection device 34, and set and limited by brightness settings unit 31
Range (300 ~ 800 lumen as escribed above) is determined with by above-mentioned action control environmental light brightness, and according to environment bright angle value
Calculated operation driving current is adjusted, or, based on prediction model according to environment bright angle value, temperature detecting value and brightness
The send as an envoy to brightness of backlight 42 of preset value calculation is slightly larger than or is slightly less than the operation driving current of brightness settings to backlight 42.
Then, the details of brightness controlling device 45 is further explained.Fig. 4 is please referred to, Fig. 4 is another embodiment of the present invention
For control LED source brightness controlling device block diagram.For controlling LED source BS（Including
At least one light emitting diode is multiple light emitting diodes of series winding in this embodiment）Brightness controlling device 5 include brightness
Setup unit 51, temperature detecting unit 52, current controller 53 and adjustable current source 54.Current controller 53 is electrically connected bright
Setup unit 51, temperature detecting unit 52 and adjustable current source 54 are spent, and adjustable current source 34 is electrically connected light-emitting diodes
Pipe light source BS.
Temperature detecting unit 52 generates temperature detecting value to electric current to detect the temperature of LED source BS
Controller 53.Brightness settings unit 51 is to user's operation or to transfer to operating system to be automatically brought into operation, to generate brightness settings,
And brightness settings will be provided to current controller 53.
Since temperature may change the electrical characteristic of LED source BS, lead to similarly to operate driving current not
Under synthermal, the brightness for the light that LED source BS is sent out is different, and therefore, the present invention uses deep learning algorithm
To find out the temperature of non-linear relation, the prediction model of brightness settings and operation driving current.Current controller 53 is based on saturating
The prediction model of deep learning acquisition is crossed, can send as an envoy to LED source BS according to brightness settings and the calculating of temperature detecting value
The brightness to emit beam is equal to the operation driving current of brightness settings.
Then, current controller 53 generates control signal according to the operation driving current calculated, so that adjustable
Current source 54 provides the operation driving current calculated and gives LED source BS, is as passed through brightness settings unit 51
When desired temperature is set as 20 ~ 80 DEG C, if the temperature detecting value that temperature detecting unit 52 is detected is set beyond temperature
Value, current controller 53 then will produce control signal to adjust current source 54, into come through switching transistor M1 and resistance R1
It realizes, but the present invention is not limited thereto.The gate of switching transistor M1 receives control signal, and the source electrode of switching transistor M1 penetrates
Resistance R1 is electrically connected low-voltage VSS, and high voltage VDD and switch crystal is electrically connected in the both ends of LED source
The base stage of pipe M1.Through control switching transistor M1 switch, it is equivalent on can change LED source BS operation drive
Streaming current.
In the embodiment of the present invention, more it is contemplated that the influence of environmental light brightness.Due to when environmental light brightness is brighter, people
Eye than less sensitive, therefore, by the brightness adjustment of LED source BS specific luminance can set the variation of device brightness
Definite value is more slightly lower.In addition, when environmental light brightness is dark, human eye is more sensitive to the variation of device brightness, therefore, can incite somebody to action
The brightness adjustment of LED source BS specific luminance setting value it is more slightly higher.In this way, brightness controlling device 5 can reach province
Electricity and/or preferably display（Illumination）The purpose of effect.
In Fig. 4, brightness controlling device 5 further includes environmental light brightness detector 55, and 55 electricity of environmental light brightness detector
Property connection current controller 53, wherein environmental light brightness detector 55 may, for example, be light receiving diode.Current controller 53
More operation driving current can be finely tuned according to the environment bright angle value that environmental light brightness detector 55 obtains, so that luminous two
The brightness ratio brightness settings for the light that pole pipe light source is emitted are slightly higher slightly lower.
Further, current controller 53 is to be based on prediction model, according to brightness settings, temperature detecting value and ambient light
Brightness value calculates the operation driving current needed for LED source BS at this time.Therefore, training set includes known to more
Temperature detecting value, more known environment bright angle values, more known brightness settings and make its LED source
Brightness is slightly higher or slightly below more known brightness settings corresponding to multiple known operate driving currents.Or
Current controller 53 is to be based on prediction model, after calculating operation driving current according to brightness settings and temperature detecting value, root
Operation driving current is finely tuned according to environment bright angle value.
The display device of the controlling back light source brightness of previous embodiment has brightness controlling device, and display can be made to fill
The brightness set is similar to brightness settings, without the influence of the temperature because of LED source, and leads to display device
Brightness and brightness settings have larger deviation.In addition, the brightness control of the display device of controlling back light source brightness
Device more considers the influence of environmental light brightness, and drives electricity according to environmental light brightness to adjust the operation of LED source
Stream, so that display device can reach power saving and/or preferably display（Illumination）The purpose of effect.
Another embodiment of the present invention provides a kind of display device of controlling back light source brightness, and backlight is luminous two
Pole pipe light source, and the display device has the brightness controlling device for controlling LED source, uses depth
It practises algorithm and trains prediction model, so based on prediction model according to brightness settings and usage time count value, Ke Yijing
The required operation driving current of LED source really is calculated, and generates control signal accordingly to control operation
Driving current.Thus, which the brightness of LED source can approach brightness settings, without because of light emitting diode
The usage time count value of light source changes, and the brightness of optical diode light source is caused to deviate brightness settings.Briefly, of the invention
Will not be because of the influence of the usage time of LED source, and it is larger to cause the brightness of display device and brightness settings to have
Deviation.
Optionally, the present invention more considers the influence of environmental light brightness and the temperature of LED source, and according to environment
Brightness and the temperature of LED source adjust the operation driving current of LED source, so that last reality
Border brightness enables display device to achieve the purpose that power saving and/or preferable display effect close to setting brightness.
In addition, aforementioned depth study algorithm can be come in fact through class neural network algorithm or support vector machines algorithm
It is existing.Further, before brightness controlling device manufacture, prediction model, later, brightness controlling device are first trained according to training set
Just it can be based on prediction model, be calculated according to usage time count value and brightness settings and used needed for LED source
Operate driving current.Aforementioned training set is more known usage time count values, more known brightness settings and makes it
The brightness of LED source is equal to multiple known operation driving currents corresponding to more known brightness settings.With
From the point of view of class neural network algorithm, training set can to find out class neural network each node weight, with train prediction
Model.
Fig. 5 is please referred to, Fig. 5 is the block diagram of the display device of the controlling back light source brightness of another embodiment of the present invention.
Display device 6 includes power supply unit 61, backlight 62, liquid crystal display panel 63, driving circuit 64 and brightness controlling device 65.
Power supply unit 61 is electrically connected backlight 62, liquid crystal display panel 63, driving circuit 64 and brightness controlling device 65, driving electricity
Road 64 is electrically connected liquid crystal display panel 63 and brightness controlling device 65 is electrically connected backlight 62.
Power supply unit 61 is providing power to backlight 62, liquid crystal display panel 63, driving circuit 64 and brightness control
Device 65 processed.Driving circuit 64 includes gate pole driver（Figure is not painted）With data driver（Figure is not painted）, to control
The torsion of multiple liquid crystal of multiple pixels of liquid crystal display panel 63 processed, to show image.Backlight 22 is by light emitting diode light
Source is realized, to emit the light of corresponding brightness to liquid crystal display panel 63 according to operation driving current.
Brightness controlling device 65 to obtain based on deep learning algorithm train come prediction model, and based on pre-
Survey behaviour of the brightness equal to brightness settings that model calculates backlight 62 of sening as an envoy to according to usage time count value and brightness settings
Make driving current to backlight 62, when used between count value be usage time that brightness controlling device 65 counts backlight 62
And it obtains.Optionally, brightness controlling device 65 also detects environmental light brightness, and adjusts calculated behaviour according to environment bright angle value
Make driving current, or, it is calculated according to environment bright angle value, usage time count value and brightness settings based on prediction model
The brightness of backlight 62 of sening as an envoy to is slightly larger than or is slightly less than the operation driving current of brightness settings to backlight 62.Optionally, bright
Degree control device 65 also detects the temperature of backlight 62, and adjusts calculated operation driving current according to temperature detecting value, again
Alternatively, calculating backlight 62 of sening as an envoy to according to usage time count value, temperature detecting value and brightness settings based on prediction model
Brightness is roughly equal to the operation driving current of brightness settings to backlight 22.
Then, the details of brightness controlling device 65 is further explained.Fig. 6 is please referred to, Fig. 6 is another embodiment of the present invention
For control LED source brightness controlling device block diagram.For controlling LED source BS（Including
At least one light emitting diode is multiple light emitting diodes of series winding in this embodiment）Brightness controlling device 7 include brightness
Setup unit 71, timing unit 72, current controller 73 and adjustable current source 74.Current controller 73 is electrically connected brightness and sets
Order member 71, timing unit 72 and adjustable current source 74, and adjustable current source 74 is electrically connected LED source BS.
Timing unit 72 to count the usage time of LED source BS, and generate usage time count value to
Current controller 73.Brightness settings unit 71 is set to user's operation or operating system to be transferred to be automatically brought into operation with generating brightness
Definite value, and brightness settings will be provided to current controller 73.
Usage time due to counting LED source BS may change the electrical characteristic of LED source BS,
Leading to similarly to operate driving current under different time, the brightness for the light that LED source BS is sent out is different, because
This, the present invention finds out the usage time, brightness settings and operation driving electricity of non-linear relation using deep learning algorithm
The prediction model of stream.Current controller 73 based on penetratingdepth study obtain prediction model, can according to brightness settings with make
The operation driving electricity that the brightness that LED source BS emits beam of sening as an envoy to is equal to brightness settings is calculated with time count value
Stream.It is such as when LED source BS is as full color display device, because the LED source BS of different colours all has
Different service life can make picture point that can fail compared with other picture points if LED source BS usage times are long
It obtains comparatively fast and so that brightness is uneven, therefore count the usage time of LED source BS by timing unit 72, then penetrate
Above-mentioned motion action driving current is to adjust light luminance, you can effectively keeps the colour temperature of LED source BS.
Then, current controller 74 generates control signal according to the operation driving current calculated, so that adjustable
Current source 74 provides the operation driving current calculated and gives LED source BS.Adjustable current source 74 can penetrate and open
It closes transistor M1 and realizes that but the present invention is not limited thereto with resistance R1.The gate of switching transistor M1 receives control signal, opens
The source electrode for closing transistor M1 is electrically connected low-voltage VSS through resistance R1, and the both ends of LED source electrically connect respectively
Connect the base stage of high voltage VDD and switching transistor M1.Through control switching transistor M1 switch, it is equivalent on can change it is luminous
The operation driving current of diode light-source BS.
In the embodiment of the present invention, more it is contemplated that the influence of environmental light brightness.Due to when environmental light brightness is brighter, people
Eye than less sensitive, therefore, by the brightness adjustment of LED source BS specific luminance can set the variation of device brightness
Definite value is more slightly lower.In addition, when environmental light brightness is dark, human eye is more sensitive to the variation of device brightness, therefore, can incite somebody to action
The brightness adjustment of LED source BS specific luminance setting value it is more slightly higher.In this way, brightness controlling device 3 can reach province
Electricity and/or preferably display（Illumination）The purpose of effect.
In Fig. 6, brightness controlling device 7 further includes environmental light brightness detector 75, and 75 electricity of environmental light brightness detector
Property connection current controller 73, wherein environmental light brightness detector 75 may, for example, be light receiving diode.Current controller 73
More operation driving current can be finely tuned according to the environment bright angle value that environmental light brightness detector 75 obtains, so that luminous two
The brightness ratio brightness settings for the light that pole pipe light source is emitted are slightly higher slightly lower.
Further, current controller 73 is to be based on prediction model, according to brightness settings, usage time count value and ring
Border brightness values calculate the operation driving current needed for LED source BS at this time.Therefore, training set includes more
Known usage time count value, more known environment bright angle values, more known brightness settings and it is made to shine two
The brightness of pole pipe light source is slightly higher or slightly below more known brightness settings corresponding to multiple known operate driving currents.
Or current controller 33 is to be based on prediction model, is driven according to brightness settings and usage time count value to calculate operation
After streaming current, operation driving current is finely tuned according to environment bright angle value.
In Fig. 6, brightness controlling device 7 further includes the temperature detecting unit 76 for being electrically connected current controller 33.Due to
Temperature can also influence the electrical characteristic of LED source BS, and therefore, the present invention shines through the detecting of temperature detecting unit 76
The temperature of diode light-source BS, and temperature detecting value is considered to calculate operation driving current.It further says, current controller
73 can be based on prediction model, be shone at this time according to brightness settings, usage time count value and temperature detecting value to calculate
Operation driving current needed for diode light-source BS.Therefore, training set include more known usage time count values, more
Known temperature detecting value, more known brightness settings are equal to the brightness of its LED source is made known to more
Multiple known operation driving currents corresponding to brightness settings.
The display device of the controlling back light source brightness of previous embodiment has brightness controlling device, and display can be made to fill
The brightness set is similar to brightness settings, without the influence of the usage time because of LED source, and causes to show
The brightness of device and brightness settings have larger deviation.In addition, the brightness of the display device of controlling back light source brightness
Control device more considers the influence of environmental light brightness and the usage time of light emitting diode, and according to environmental light brightness and luminous two
The usage time of pole pipe adjusts the operation driving current of LED source so that display device can reach power saving and/or
Preferably display（Illumination）The purpose of effect.
At least one of numerous embodiments of the content system present invention of above-described embodiment, the present invention belonging to technology neck
Domain has usually intellectual after reading the above, is appreciated that core of the invention concept from working as, and regard its demand pair
Above-described embodiment is modified.In other words, the content of above-described embodiment is not to limit the present invention, and the present invention is protected
Range is defined with the words of following claims.
Claims (10)
1. a kind of display device of controlling back light source brightness, which is characterized in that the display device includes：
Backlight is realized with LED source；
Liquid crystal display panel, wherein the backlight provides light to the liquid crystal display panel；
Driving circuit is electrically connected liquid crystal display panel, to control multiple liquid of multiple pixels in the liquid crystal display panel
Brilliant torsion；And
Brightness controlling device is electrically connected the backlight, and to detect the temperature of the LED source, acquirement is based on
The prediction model that deep learning algorithm obtains, and it is based on the prediction model, according to temperature detecting value and brightness settings meter
The operation driving current of the corresponding brightness predetermined value is calculated to the LED source.
2. display device as described in claim 1, which is characterized in that the brightness controlling device includes：
Temperature detecting unit, to detect the temperature of the LED source, to obtain the temperature detecting value；
Brightness settings unit, to provide the brightness settings；
Adjustable current source is electrically connected the LED source, to provide the operation driving current to the hair
Optical diode light source；And
Current controller based on deep learning, be electrically connected the temperature detecting unit, the brightness settings unit with it is described
Adjustable current source calculates pair to be based on the prediction model according to the temperature detecting value and the brightness settings
The operation driving current of the brightness settings is answered, and it is calculated to generate the control signal control adjustable current source offer
The operation driving current gives the LED source.
3. display device as described in claim 1, which is characterized in that the display device further includes：
Power supply unit is electrically connected the backlight, the liquid crystal display panel, the driving circuit and the brightness and controls
Device fills to provide power to the backlight, the liquid crystal display panel, the driving circuit and brightness control
It sets.
4. display device as claimed in claim 2, which is characterized in that the brightness controlling device further includes：
Environmental light brightness detector is electrically connected the current controller based on deep learning, to detect ambient light, to obtain
Take environment bright angle value；
The wherein described current controller based on deep learning more receives the environment bright angle value, wherein operation driving electricity
It flows more relevant in the environment bright angle value.
5. display device as described in claim 1, which is characterized in that the Light-Emitting Diode light source includes at least one luminous two
Pole pipe.
6. display device as claimed in claim 2, which is characterized in that the adjustable current source includes：
Resistance；And
Transistor is switched, gate is to receive the control signal, and base stage is providing the operation driving current to institute
State LED source and the electrically described resistance of its source electrode.
7. display device as claimed in claim 2, which is characterized in that the current controller based on deep learning uses class
Neural network is calculated or support vector machines algorithm.
8. display device as claimed in claim 4, which is characterized in that the current controller based on deep learning is based on institute
Prediction model is stated, the operation is calculated according to the temperature detecting value, the brightness settings and the environment bright angle value
Driving current；Alternatively, the current controller based on deep learning is based on the prediction model, according to the temperature detecting value
Calculate the operation driving current with the brightness settings, then it is described based on the current controller of deep learning according to institute
It states environment bright angle value and adjusts the operation driving current.
9. display device as claimed in claim 6, which is characterized in that control the switch transistor through the control signal
It opens or closes, to adjust the operation driving current.
10. a kind of display device, which is characterized in that the display device includes：
Backlight is realized with LED source；
Liquid crystal display panel, wherein the backlight provides light to the liquid crystal display panel；
Driving circuit is electrically connected liquid crystal display panel, to control multiple liquid of multiple pixels in the liquid crystal display panel
Brilliant torsion；
Brightness controlling device is electrically connected the backlight, and to detect the temperature of the LED source, acquirement is based on
The prediction model that deep learning algorithm obtains, and it is based on the prediction model, according to temperature detecting value and brightness settings meter
The operation driving current of the corresponding brightness predetermined value is calculated to the LED source；And
Power supply unit is electrically connected the backlight, the liquid crystal display panel, the driving circuit and the brightness and controls
Device fills to provide power to the backlight, the liquid crystal display panel, the driving circuit and brightness control
It sets；
The wherein described brightness controlling device includes：
Temperature detecting unit, to detect the temperature of the LED source, to obtain the temperature detecting value；
Brightness settings unit, to provide the brightness settings；
Adjustable current source is electrically connected the LED source, to provide the operation driving current to the hair
Optical diode light source；And
Current controller based on deep learning, be electrically connected the temperature detecting unit, the brightness settings unit with it is described
Adjustable current source calculates pair to be based on the prediction model according to the temperature detecting value and the brightness settings
The operation driving current of the brightness settings is answered, and it is calculated to generate the control signal control adjustable current source offer
The operation driving current gives the LED source.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810108315.6A CN108305588A (en) | 2018-02-02 | 2018-02-02 | Display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810108315.6A CN108305588A (en) | 2018-02-02 | 2018-02-02 | Display device |
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| CN108305588A true CN108305588A (en) | 2018-07-20 |
Family
ID=62864086
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| CN201810108315.6A Withdrawn CN108305588A (en) | 2018-02-02 | 2018-02-02 | Display device |
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| CN111833781A (en) * | 2019-03-29 | 2020-10-27 | 光远科技股份有限公司 | Light emitting diode circuit and touch detection method |
| CN112735324A (en) * | 2019-10-15 | 2021-04-30 | 杭州海康威视数字技术股份有限公司 | LED display screen control method and device |
| CN114495838A (en) * | 2022-02-22 | 2022-05-13 | 深圳市华星光电半导体显示技术有限公司 | Sub-pixel area determining method and determining device thereof |
| CN117253448A (en) * | 2023-11-16 | 2023-12-19 | 深圳市连硕显电子有限公司 | LED display screen correction method and system |
| CN117253448B (en) * | 2023-11-16 | 2024-05-14 | 深圳市连硕显电子有限公司 | LED display screen correction method and system |
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| CN107578749A (en) * | 2017-10-26 | 2018-01-12 | 惠科股份有限公司 | The brightness controlling device and method of LED source |
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