CN105931604A - Backlight driver control method, apparatus and terminal equipment - Google Patents
Backlight driver control method, apparatus and terminal equipment Download PDFInfo
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- CN105931604A CN105931604A CN201610514934.6A CN201610514934A CN105931604A CN 105931604 A CN105931604 A CN 105931604A CN 201610514934 A CN201610514934 A CN 201610514934A CN 105931604 A CN105931604 A CN 105931604A
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- backlight
- lighted
- string
- brightness degree
- backlight string
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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
- G09G3/342—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- 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
- G09G3/36—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 using liquid crystals
Abstract
The invention discloses a backlight driver control method, apparatus and terminal equipment. The method includes the steps of obtaining brightness level of a display screen, determining the backlight lamp strings to be lit on according to the brightness level, and controlling the output current of the output ends of a DC converter corresponding to the backlight lamp strings to drive the backlight lamp strings to be lit to light on. Different lamp strings matching with the brightness level are selected and lit on according to the brightness level of a display, so that losses caused by all output ends of the DC converter outputting undercurrent when the brightness level is low can be prevented. The efficiency of a backlight drive circuit is improved.
Description
Technical field
The application relates to technical field of information processing, particularly relates to a kind of backlight drive control method, device and terminal unit.
Background technology
Existing LCD display, is generally combined, by a string or multi-string LED light source, the backlight offer light source that other opticses form.
Time actually used, LED drive circuit uses DC converter provide electric current for each string backlight simultaneously, drive each string back of the body
Light is lighted simultaneously or closes, and regulation backlight string electric current realize LED display bright shadow joint, but this driving
Mode, when backlight string electric current is less, the power consumption of DC converter is relatively big, make the inefficient of LED drive circuit.
Summary of the invention
One of technical problem that the application is intended to solve in correlation technique the most to a certain extent.
To this end, the first of the application purpose is to propose a kind of backlight drive control method, the method achieve according to display
The brightness degree of screen, selects to light from the different lamp string of brightness degree coupling, thus avoids when brightness degree is relatively low,
The all outfans of DC converter all export the loss that small area analysis brings, and improve the efficiency of backlight drive circuit.
Second purpose of the application is that proposing a kind of backlight drive controls device.
3rd purpose of the application is to propose a kind of terminal unit.
4th purpose of the application is to propose another kind of terminal unit.
For reaching above-mentioned purpose, the application first aspect embodiment proposes a kind of backlight drive control method, including: obtain aobvious
The brightness degree of display screen；According to described brightness degree, determine backlight string to be lighted；Control and described backlight to be lighted
Lamp string corresponding, DC converter outfan output electric current, luminous with backlight string to be lighted described in driving.
The backlight drive control method of the embodiment of the present application, first obtains the brightness degree of display screen, then according to brightness degree,
Determine backlight string to be lighted, control the DC converter outfan output electricity corresponding with backlight string to be lighted the most again
Stream, drives backlight string to be lighted luminous.Hereby it is achieved that according to the brightness degree of display screen, select and brightness etc.
The different lamp string of level coupling is lighted, thus avoids when brightness degree is relatively low, and all outfans of DC converter all export
The loss that small area analysis brings, improves the efficiency of backlight drive circuit.
For reaching above-mentioned purpose, the application second aspect embodiment proposes a kind of backlight drive and controls device, including: obtain mould
Block, for obtaining the brightness degree of display screen；Determine module, for according to described brightness degree, determine backlight to be lighted
Lamp string；Control module, exports electric current for controlling corresponding with described backlight string to be lighted, DC converter outfan,
Luminous with backlight string to be lighted described in driving.
The backlight drive of the embodiment of the present application controls device, first obtains the brightness degree of display screen, then according to brightness degree,
Determine backlight string to be lighted, control the DC converter outfan output electricity corresponding with backlight string to be lighted the most again
Stream, drives backlight string to be lighted luminous.Hereby it is achieved that according to the brightness degree of display screen, select and brightness etc.
The different lamp string of level coupling is lighted, thus avoids when brightness degree is relatively low, and all outfans of DC converter all export
The loss that small area analysis brings, improves the efficiency of backlight drive circuit.
For reaching above-mentioned purpose, the application third aspect embodiment proposes a kind of terminal unit, including: backlight as above
Drive dynamic control device.
The terminal unit of the embodiment of the present application, first obtains the brightness degree of display screen, then according to brightness degree, determines and treats
The backlight string lighted, controls the DC converter outfan output electric current corresponding with backlight string to be lighted the most again, comes
Drive backlight string to be lighted luminous.Hereby it is achieved that according to the brightness degree of display screen, select to mate with brightness degree
Different lamp strings light, thus avoid when brightness degree is relatively low, all outfans of DC converter all export small area analysis
The loss brought, improves the efficiency of backlight drive circuit.
For reaching above-mentioned purpose, the 4th aspect of the application proposes a kind of terminal unit, including following one or more assemblies:
Circuit board, housing, processor, memorizer, power circuit, multimedia groupware, display screen, DC converter, sensor
Assembly, and communications component；Wherein, described circuit board is placed in the interior volume that described housing surrounds, described processor,
Described memorizer and described DC converter are arranged on described circuit board；Described power circuit, is used for as described mobile terminal
Each circuit or device power；Described memorizer is used for storing executable program code；Described processor is described by reading
In memorizer storage executable program code run the program corresponding with described executable program code, for perform with
Lower step:
Obtain the brightness degree of display screen；
According to described brightness degree, determine backlight string to be lighted；
Control corresponding with described backlight string to be lighted, DC converter outfan output electric current, treat a little described in driving
Bright backlight string is luminous.
The terminal unit of the embodiment of the present application, first obtains the brightness degree of display screen, then according to brightness degree, determines and treats
The backlight string lighted, controls the DC converter outfan output electric current corresponding with backlight string to be lighted the most again, comes
Drive backlight string to be lighted luminous.Hereby it is achieved that according to the brightness degree of display screen, select to mate with brightness degree
Different lamp strings light, thus avoid when brightness degree is relatively low, all outfans of DC converter all export small area analysis
The loss brought, improves the efficiency of backlight drive circuit.
Accompanying drawing explanation
The present invention above-mentioned and/or that add aspect and advantage will be apparent from from the following description of the accompanying drawings of embodiments
With easy to understand, wherein:
Fig. 1 is the schematic flow sheet of the backlight drive control method of one embodiment of the application；
Fig. 2 is the schematic flow sheet of the backlight drive control method of another embodiment of the application；
Fig. 3 is the structural representation of the backlight drive circuit of one embodiment of the application；
Fig. 4 is the structural representation of the backlight drive control device of one embodiment of the application；
Fig. 5 is the structural representation of the terminal unit of one embodiment of the application；
Fig. 6 is the structural representation of the terminal unit of another embodiment of the application.
Detailed description of the invention
Embodiments herein is described below in detail, and the example of described embodiment is shown in the drawings, the most identical
Or similar label represents same or similar element or has the element of same or like function.Retouch below with reference to accompanying drawing
The embodiment stated is exemplary, it is intended to be used for explaining the application, and it is not intended that restriction to the application.
In the embodiment of the present application, it is considered in prior art, DC converter controls each LED string simultaneously and lights or extinguish,
When the brightness degree of display screen is relatively low, when the electric current of the most each lamp string is less, the loss of DC converter is relatively big, so that driving
The problem that dynamic system power dissipation is bigger, it is provided that a kind of corresponding lamp string can be selected to be driven according to the brightness degree of display screen
Backlight drive control method, reduce when display-screen brightness grading is relatively low, the loss of DC converter.
Below with reference to the accompanying drawings backlight drive control method, device and the terminal unit of the embodiment of the present application are described.
Fig. 1 is the schematic flow sheet of the backlight drive control method of one embodiment of the application.
As it is shown in figure 1, this backlight drive control method includes:
Step 101, obtains the brightness degree of display screen.
Specifically, the backlight drive control method that the present embodiment provides is configured in have in the terminal unit of LED display and is
Example is specifically described.
It should be noted that the type of terminal unit is a lot, can select, such as according to application needs: be mobile phone, flat
Plate computer etc..
Specifically, in use, user can adjust the brightness of LED display to terminal unit as required.Such as, exist
During night, brightness can be dimmed, to protect eyes etc..When user is when adjusting the brightness of display screen, and terminal unit is i.e.
The brightness degree that display screen is current can be obtained,
Step 102, according to described brightness degree, determines backlight string to be lighted.
Concrete, backlight drive controls in device, can be with the corresponding relation of preset brightness degree Yu backlight string, afterwards,
After determining the brightness degree of display screen, lamp string to be lighted can be determined according to corresponding relation.
Generally, user by the brightness of display screen from the darkest to the brightest any setting, and can consider terminal unit as required
Volume, the driving lamp in backlight drive light source is ganged up Chang Wufa and is arranged as required to into arbitrarily many strings, therefore, it can arrange
Different brightness ranges, corresponding different lamp string.I.e. above-mentioned steps 102, including:
According to the brightness range belonging to described brightness degree, determine the to be lighted backlight string corresponding with described brightness range.
For example, if brightness degree is not more than A, corresponding first backlight string, brightness degree is more than A and no more than B
Time, corresponding second backlight string, when brightness degree is more than B and no more than C, corresponding 3rd backlight string, then backlight is driven
Dynamic control device, get the brightness degree of display screen between A and B time, then can determine that according to corresponding relation, treat a little
Bright backlight string is the second backlight string.
Wherein, the first backlight string, the second backlight string and the 3rd backlight string, can be a backlight string, it is also possible to
The combination of many backlights string, this is not construed as limiting by the present embodiment.
Wherein, according in terminal unit, the form that arranges of each backlight string, above-mentioned steps 102, various ways can be used
Realize.
Example one:
According to described brightness degree, determine the quantity of backlight string to be lighted.
Concrete, if the rated current of each backlight string in terminal unit is identical, then backlight drive controls device, is determining
After brightness degree, the quantity of backlight string to be lighted according to brightness degree, can be determined.
For example, if brightness degree is not more than A, corresponding a string backlight string, brightness degree is more than A and no more than B
Time, corresponding 2 string backlight strings, when brightness degree is more than B and no more than C, corresponding 3 string backlight strings, then backlight is driven
Dynamic control device, get the brightness degree of display screen between A and B time, then can determine that according to corresponding relation, treat a little
Bright backlight string is 2 strings.
Example two:
According to described brightness degree, determine the mark of backlight string to be lighted.
It is understood that the backlight drive that can also arrange display screen is respectively adopted the lamp string composition of different current class, no
The same the most corresponding different brightness degree of lamp string.For example, if brightness degree is no more than A, corresponding first backlight
Lamp string, when brightness degree is more than A and no more than B, corresponding second backlight string, when brightness degree is more than B and no more than C,
Corresponding 3rd backlight string, then backlight drive controls device, is getting the brightness degree of display screen for time between A and B,
Then can determine that according to corresponding relation, backlight string to be lighted is the second backlight string.
Step 103, controls corresponding with described backlight string to be lighted, DC converter outfan output electric current, to drive
Backlight string to be lighted described in Dong is luminous.
Concrete, DC converter includes multiple outfan, provides operating current, this Shen for being respectively often string backlight string
Embodiment please determine after the backlight string lighted, can control in DC converter, the backlight to be lighted with this
Which road output branch road output electric current that string is corresponding, drives backlight string to be lighted luminous.
It should be noted that in the embodiment of the present application, according to the brightness degree of display screen, determine backlight string to be lighted
Quantity or mark, and then only control outfan output electric current corresponding with this backlight string to be lighted in DC converter,
So that when display-screen brightness grading is relatively low, be not the electric current controlling to reduce each outfan of DC converter, but logical
Cross the backlight string luminescence controlling a small amount of backlight string or mating with brightness degree, reduce the loss of DC converter.
And owing to, in DC converter, only corresponding with backlight string to be lighted branch road works, and other each branch road does not export electric current,
Thus reduce further the loss of DC converter.
Specifically, due to the corresponding different lamp cross luma degree of different brightness degrees, the most corresponding different driving electric current.Therefore,
Above-mentioned steps 103, specifically includes:
According to described brightness degree, determine driving size of current；
Control corresponding with described backlight string to be lighted, DC converter outfan output and described driving currents match
Electric current.
Concrete, backlight drive controls in device, the relation that can shift to an earlier date preset brightness degree with drive electric current, thus is obtaining
After taking the brightness degree that display screen is current, determine the driving electric current of correspondence further according to brightness degree, thus control DC converter
The electric current that corresponding branch road output is equal with this driving electric current.
For example, if according to the brightness degree of display screen, determine that backlight string to be lighted is the first backlight string, and with
The outfan of the DC converter that this first backlight string is corresponding is the first outfan, the driving electric current determined according to brightness degree
Be 0.5 ampere (A), then backlight drive controls device and can control the first outfan of DC converter, the electricity of output 0.5A
Stream.
The backlight drive control method of the embodiment of the present application, first obtains the brightness degree of display screen, then according to brightness degree,
Determine backlight string to be lighted, control the DC converter outfan output electricity corresponding with backlight string to be lighted the most again
Stream, drives backlight string to be lighted luminous.Hereby it is achieved that according to the brightness degree of display screen, select and brightness etc.
The different lamp string of level coupling is lighted, thus avoids when brightness degree is relatively low, and all outfans of DC converter all export
The loss that small area analysis brings, improves the efficiency of backlight drive circuit.
Below in conjunction with Fig. 2 and Fig. 3, with a kind of concrete drive circuit form, the backlight drive that the embodiment of the present application is provided
Control method is further described.
Fig. 2 is the schematic flow sheet of the backlight drive control method of another embodiment of the application, and Fig. 3 is one reality of the application
Execute a kind of backlight drive circuit structural representation that example provides.
In backlight drive circuit as shown in Figure 3, control device 1, DC converter 2 and two string backlights including backlight drive
Lamp string 3 and 4, backlight drive controls device 1 and exports control signal for DC converter 2, controls the defeated of DC converter 2
Going out, the first outfan of DC converter 2 provides for the lamp string being designated 3 and drives electric current, and the second of DC converter 2 is defeated
Go out end and provide driving electric current for the lamp string being designated 4.
Wherein, the maximum operating currenbt of the backlight string being designated 1 is 1A, is designated the maximum functional electricity of the backlight string of 2
Stream is 0.5A.If the high-high brightness grade of display screen is 100, corresponding lamp string 1 and lamp string 2 are all operated in maximum current state,
When brightness degree is more than 33, correspondence lights backlight string 2, and when brightness is less than 33, correspondence lights backlight string 1.
As in figure 2 it is shown, this backlight drive control method includes:
Step 201, obtains the brightness degree of display screen.
Step 202, according to the scope belonging to described brightness degree, determines the mark of backlight string to be lighted.
For example, if the brightness degree obtained is 60, more than 33, backlight string to be lighted is lamp string 1.
Step 203, according to described brightness degree, determines driving size of current.
Step 204, controls the first outfan output of DC converter and the electric current of described driving currents match.
Concrete, when being 100 due to brightness degree, corresponding driving electric current is 1.5A, then when brightness degree is 60, right
The driving electric current answered is 0.9A, thus backlight drive control device 1 can be according to the working method of DC converter 2, for directly
First branch road of current converter 2 provides corresponding control signal, makes the first outfan output 0.9A's of DC converter 2
Electric current.Owing to the first outfan maximum operating currenbt of DC converter 2 is 1A, originally it is in embodiment, is not two outputs
End is all operated in the load condition of 0.45A, but is operated in by controlling the first outfan under the load condition of 0.9A, not only
Reduce the first outfan less and bring extra loss due to load, and reduce two branch roads when working simultaneously,
Other losses that each electronic devices and components in road bring.
It can thus be seen that when determining that brightness degree is not maximum brightness grade, be not by the driving electricity of all backlight strings
The mode that stream all reduces, but lighted the lamp string mated with brightness degree by selection luminous, can avoid at brightness degree relatively
Time low, all outfans of DC converter all export the loss that small area analysis brings, and improve the efficiency of backlight drive circuit.
In order to realize above-described embodiment, the application also proposes a kind of backlight drive and controls device.
Fig. 4 is the structural representation of the backlight drive control device of one embodiment of the application.
As shown in Figure 4, this backlight drive control device includes:
Acquisition module 41, for obtaining the brightness degree of display screen；
Determine module 42, for according to described brightness degree, determine backlight string to be lighted；
Control module 43, exports electric current for controlling corresponding with described backlight string to be lighted, DC converter outfan,
Luminous with backlight string to be lighted described in driving.
Concrete, the backlight drive control device that the present embodiment provides is can be configured in the terminal unit with display screen,
For performing the backlight drive control method shown in above-mentioned Fig. 1 or Fig. 2.
It should be noted that the type of terminal unit is a lot, can select, such as according to application needs: be mobile phone, flat
Plate computer etc..
Wherein, in a kind of possible way of realization of the present embodiment, above-mentioned determine module 42, specifically for:
According to described brightness degree, determine the quantity of backlight string to be lighted；
Or, according to described brightness degree, determine the mark of backlight string to be lighted.
Module 42 is determined it addition, above-mentioned, also particularly useful for:
According to the brightness range belonging to described brightness degree, determine the to be lighted backlight string corresponding with described brightness range.
Further, described control module 43, specifically for:
According to described brightness degree, determine driving size of current；
Control corresponding with described backlight string to be lighted, DC converter outfan output and described driving currents match
Electric current.
It should be noted that the aforementioned explanation to the embodiment of backlight drive control method shown in Fig. 1 or Fig. 2 is also applied for
The backlight drive of this embodiment controls device, and here is omitted.
The backlight drive of the embodiment of the present application controls device, first obtains the brightness degree of display screen, then according to brightness degree,
Determine backlight string to be lighted, control the DC converter outfan output electricity corresponding with backlight string to be lighted the most again
Stream, drives backlight string to be lighted luminous.Hereby it is achieved that according to the brightness degree of display screen, select and brightness etc.
The different lamp string of level coupling is lighted, thus avoids when brightness degree is relatively low, and all outfans of DC converter all export
The loss that small area analysis brings, improves the efficiency of backlight drive circuit.
Fig. 5 is the structural representation of the terminal unit of one embodiment of the application.
As it is shown in figure 5, this terminal unit 50 includes: backlight drive controls device 51 and display screen 52, and wherein, backlight is driven
The backlight drive that dynamic control device 51 can use the embodiment shown in the above-mentioned Fig. 4 of the present invention to provide controls device.
Wherein, described terminal unit 50 includes: mobile phone or panel computer.
The terminal unit of the embodiment of the present application, first obtains the brightness degree of display screen, then according to brightness degree, determines and treats
The backlight string lighted, controls the DC converter outfan output electric current corresponding with backlight string to be lighted the most again, comes
Drive backlight string to be lighted luminous.Hereby it is achieved that according to the brightness degree of display screen, select to mate with brightness degree
Different lamp strings light, thus avoid when brightness degree is relatively low, all outfans of DC converter all export small area analysis
The loss brought, improves the efficiency of backlight drive circuit.
Fig. 6 is the structural representation of the terminal unit of another embodiment of the application.Such as, terminal unit can be mobile electricity
Words etc..
Seeing Fig. 6, terminal unit can include following one or more assembly:
Circuit board 601, housing 602, processor 603, memorizer 604, power circuit 605, multimedia groupware 606, aobvious
Display screen 607, DC converter 608, sensor cluster 609, and communications component 610；Wherein, described circuit board 601
It is placed in the interior volume that described housing 602 surrounds, described processor 603, described memorizer 604 and described DC converting
Device 608 is arranged on described circuit board 601；Described power circuit 605, for for described terminal unit each circuit or
Device is powered；Described memorizer 604 is used for storing executable program code；Described processor 603 is by reading described storage
In device 604 storage executable program code run the program corresponding with described executable program code, for perform with
Lower step:
Obtain the brightness degree of display screen；
According to described brightness degree, determine backlight string to be lighted；
Control corresponding with described backlight string to be lighted, DC converter outfan output electric current, treat a little described in driving
Bright backlight string is luminous.
It should be noted that the aforementioned explanation to the backlight drive control method embodiment shown in Fig. 1, Fig. 2 is also suitable
In the terminal unit of this embodiment, it realizes principle and is similar to, and here is omitted.
The terminal unit of the embodiment of the present application, first obtains the brightness degree of display screen, then according to brightness degree, determines and treats
The backlight string lighted, controls the DC converter outfan output electric current corresponding with backlight string to be lighted the most again, comes
Drive backlight string to be lighted luminous.Hereby it is achieved that according to the brightness degree of display screen, select to mate with brightness degree
Different lamp strings light, thus avoid when brightness degree is relatively low, all outfans of DC converter all export small area analysis
The loss brought, improves the efficiency of backlight drive circuit.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show
Example " or the description of " some examples " etc. means to combine this embodiment or example describes specific features, structure, material or
Feature is contained at least one embodiment or the example of the application.In this manual, the schematic representation to above-mentioned term
Necessarily it is directed to identical embodiment or example.And, the specific features of description, structure, material or feature are permissible
One or more embodiment in office or example combine in an appropriate manner.Additionally, in the case of the most conflicting, ability
The feature of the different embodiments described in this specification or example and different embodiment or example can be entered by the technical staff in territory
Row combines and combination.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed
Or implicitly include at least one this feature.In the description of the present application, " multiple " are meant that at least two, such as two
Individual, three etc., unless otherwise expressly limited specifically.
In flow chart or at this, any process described otherwise above or method description are construed as, and represent and include one
Or the module of code, fragment or the part of the executable instruction of the more step for realizing specific logical function or process,
And the scope of the preferred implementation of the application includes other realization, wherein can not press order that is shown or that discuss,
Including according to involved function by basic mode simultaneously or in the opposite order, performing function, this should be by the application's
Embodiment person of ordinary skill in the field understood.
Should be appreciated that each several part of the application can realize by hardware, software, firmware or combinations thereof.In above-mentioned reality
Execute in mode, software that multiple steps or method in memory and can be performed by suitable instruction execution system with storage or
Firmware realizes.Such as, if realized with hardware, with the most the same, available well known in the art under
Any one or their combination in row technology realize: have the logic gates for data signal realizes logic function
Discrete logic, there is the special IC of suitable combination logic gate circuit, programmable gate array (PGA), existing
Field programmable gate array (FPGA) etc..
Those skilled in the art are appreciated that realizing all or part of step that above-described embodiment method carries is can
Completing instructing relevant hardware by program, described program can be stored in a kind of computer-readable recording medium,
This program upon execution, including one or a combination set of the step of embodiment of the method.
Storage medium mentioned above can be read only memory, disk or CD etc..Although above it has been shown and described that
Embodiments herein, it is to be understood that above-described embodiment is exemplary, it is impossible to be interpreted as the restriction to the application,
Above-described embodiment can be changed in scope of the present application, revises, replace and modification by those of ordinary skill in the art.
Claims (10)
1. a backlight drive control method, it is characterised in that comprise the following steps:
Obtain the brightness degree of display screen；
According to described brightness degree, determine backlight string to be lighted；
Control corresponding with described backlight string to be lighted, DC converter outfan output electric current, treat a little described in driving
Bright backlight string is luminous.
2. the method for claim 1, it is characterised in that described according to described brightness degree, determines the back of the body to be lighted
Light modulation string, including:
According to described brightness degree, determine the quantity of backlight string to be lighted；
Or, according to described brightness degree, determine the mark of backlight string to be lighted.
3. the method for claim 1, it is characterised in that described according to described brightness degree, determines the back of the body to be lighted
Light modulation string, including:
According to the brightness range belonging to described brightness degree, determine the to be lighted backlight string corresponding with described brightness range.
4. the method as described in claim 1-3 is arbitrary, it is characterised in that described control and described backlight string to be lighted
Correspondence, DC converter outfan output electric current, including:
According to described brightness degree, determine driving size of current；
Control corresponding with described backlight string to be lighted, DC converter outfan output and described driving currents match
Electric current.
5. a backlight drive controls device, it is characterised in that including:
Acquisition module, for obtaining the brightness degree of display screen；
Determine module, for according to described brightness degree, determine backlight string to be lighted；
Control module, exports electric current for controlling corresponding with described backlight string to be lighted, DC converter outfan,
Luminous with backlight string to be lighted described in driving.
6. device as claimed in claim 5, it is characterised in that described determine module, specifically for:
According to described brightness degree, determine the quantity of backlight string to be lighted；
Or, according to described brightness degree, determine the mark of backlight string to be lighted.
7. device as claimed in claim 5, it is characterised in that described determine module, specifically for:
According to the brightness range belonging to described brightness degree, determine the to be lighted backlight string corresponding with described brightness range.
8. the device as described in claim 5-7 is arbitrary, it is characterised in that described control module, specifically for:
According to described brightness degree, determine driving size of current；
Control corresponding with described backlight string to be lighted, DC converter outfan output and described driving currents match
Electric current.
9. a terminal unit, it is characterised in that include that the backlight drive as described in claim 5-8 is arbitrary controls device.
10. a terminal unit, it is characterised in that include following one or more assembly: circuit board, housing, processor,
Memorizer, power circuit, multimedia groupware, display screen, DC converter, sensor cluster, and communications component；Its
In, described circuit board is placed in the interior volume that described housing surrounds, and described processor, described memorizer and described direct current become
Parallel operation is arranged on described circuit board；Described power circuit, powers for each circuit or the device for described mobile terminal；
Described memorizer is used for storing executable program code；Described processor is by reading the performed journey of storage in described memorizer
Sequence code runs the program corresponding with described executable program code, for performing following steps:
Obtain the brightness degree of display screen；
According to described brightness degree, determine backlight string to be lighted；
Control corresponding with described backlight string to be lighted, DC converter outfan output electric current, treat a little described in driving
Bright backlight string is luminous.
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| CN111312180A (en) * | 2020-03-19 | 2020-06-19 | 亚世光电股份有限公司 | PWM compensation method and device for ultra-long service life LED backlight source controlled by MCU |
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