CN103415105B - Method and the display in backlight module, compensation display backlight source - Google Patents
Method and the display in backlight module, compensation display backlight source Download PDFInfo
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- CN103415105B CN103415105B CN201310275042.1A CN201310275042A CN103415105B CN 103415105 B CN103415105 B CN 103415105B CN 201310275042 A CN201310275042 A CN 201310275042A CN 103415105 B CN103415105 B CN 103415105B
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Abstract
The method and the display that the present invention relates to a kind of backlight module, compensation display backlight source, the method in compensation display backlight source comprises the following steps: induction is to the luminous intensity of the extraneous light of described display input; Control the light transmittance of the viewing area irradiation of ambient light alignment display; Respond to the luminous intensity of described viewing area according to described light transmittance; Judge the image mode of display work at present; The glow current of adjusting display according to the luminous intensity of the luminous intensity of image mode, viewing area and extraneous light, the present invention can utilize the backlight of extraneous light compensation display to reduce its power consumption.<!--1-->
Description
Technical field
The present invention relates to display technology field, relate in particular to a kind of backlight module, the compensation display back of the bodyThe method of light source and display.
Background technology
Liquid crystal display (LiquidCrystalDisplay, LCD) has been widely used in respectivelyPlant in electronic product, liquid crystal display major part is backlight liquid crystal display at present, backlightLiquid crystal display is made up of display panels and backlight module. Wherein, the light source of backlight moduleMainly cathode fluorescent tube or light emitting diode (LightEmittingDiode, LED), cathode fluorescent tube sends white light by the mixed light of fluorescent material, but fluorescent tubePower consumption and volume are all larger, be substantially eliminated at present, and LED light emitting diode become masterStream.
As shown in Figure 1, Fig. 1 is the structural representation of backlight module in prior art, and backlight module comprisesLighting transistor 203, backlight drive module 205, LGP 206 and liquid crystal panel 207. By schemingVisible in 1, the backlight of backlight module is lighting transistor 203, and its backlight is more single,Known its power consumption can't be little, is unfavorable for extending the life-span of lighting transistor 203. Although existing skillIn art, there is the method for the ambient light utilized as backlight, but just separately using ambient light as the back of the bodyLight source, for example, utilize laser separately using ambient light as backlight.
In prior art, the power consumption relative fluorescence fluorescent tube of LED light emitting diode is lower, but because there is no otherSupplementing of light source, for large-sized display, the power that its backlight module consumes stillVery large, because the brightness of LED lumination of light emitting diode is higher, be unfavorable for extending LED light-emitting diodes againThe life-span of pipe.
Summary of the invention
Main purpose of the present invention is to provide a kind of method in backlight module, compensation display backlight sourceAnd display, be intended to utilize the backlight of extraneous light compensate for backlight module to reduce its power consumption.
In order to achieve the above object, the present invention proposes a kind of backlight module, comprise backlight drive module andMultiple lighting transistors, is characterized in that, also comprise multiple optical transmitting sets and multiple the first inductionDevice;
Described multiple optical transmitting set is evenly arranged between described multiple lighting transistor, described light transmittingDeviceComprise the second inductor and liquid crystal film switch, described the second inductor is for responding to described lightThe luminous intensity of the extraneous light of transmitter input, described liquid crystal film switch is used for controlling the external worldThe light transmittance that light irradiates to the viewing area of described backlight module;
Described multiple the first inductor is evenly arranged between described multiple lighting transistor, for basisThe luminous intensity of described light transmittance induction viewing area;
Described backlight drive module respectively with described optical transmitting set, described the first inductor and described luminousTransistor connects, for judging the image mode of backlight module work at present, and according to described pictureThe luminous intensity of the luminous intensity of surface model, the first inductor induction and the induction of the second inductor is adjustedThe electric current of whole described lighting transistor.
Preferably, described the first inductor for the light transmittance when the control of liquid crystal film switch is not specifically0 o'clock, the demonstration luminous intensity of induction viewing area;
The first inductor is also for being judged as 2D pattern and working as the control of liquid crystal film switch when backlight drive moduleThe light transmittance of system is 0 o'clock, and the first curve under the current electric current dutycycle of inducing luminous transistor is sent outLuminous intensity;
The first inductor is also for being judged as 3D pattern and working as the control of liquid crystal film switch when backlight drive moduleThe light transmittance of system is 0 o'clock, and the second curve under inducing luminous transistor constant current dutycycle is luminousIntensity.
Preferably, described backlight drive module, specifically for when being judged as after 2D pattern, is sent out according to showingThe luminous intensity of luminous intensity, the first curve luminous intensity and extraneous light is adjusted the luminous of displayElectric current;
When being judged as after 3D pattern, according to showing luminous intensity, the second curve luminous intensity and ambient lightThe luminous intensity of line is adjusted the glow current of display.
Preferably, backlight drive module is also further used for when being judged as after 2D pattern, judges the second senseAnswer the luminous intensity of device induction whether to be more than or equal to the first curve luminous intensity;
In the time that the luminous intensity of the second inductor induction is more than or equal to the first curve luminous intensity, will send outOptotransistor is closed, and the first inductor induction aobvious while being closed condition according to lighting transistorShow the light transmittance of luminous intensity and the first curve luminous intensity control liquid crystal film switch;
In the time that the luminous intensity of the second inductor induction is less than the first curve luminous intensity, control liquid crystal thinThe light transmittance of membrane switch is maximum, and while be maximum according to the light transmittance of liquid crystal film switch firstThe demonstration luminous intensity of inductor induction and the first curve luminous intensity are adjusted the electricity of lighting transistorStream;
Backlight drive module is also further used for when being judged as after 3D pattern, judges the second inductor inductionLuminous intensity whether be more than or equal to the second curve luminous intensity;
In the time that the luminous intensity of the second inductor induction is more than or equal to the second curve luminous intensity, will send outOptotransistor is closed, and the first inductor induction aobvious while being closed condition according to lighting transistorShow the light transmittance of luminous intensity and the second curve luminous intensity control liquid crystal film switch;
In the time that the luminous intensity of the second inductor induction is less than the second curve luminous intensity, control liquid crystal thinThe light transmittance of membrane switch is maximum, and while be maximum according to the light transmittance of liquid crystal film switch firstThe demonstration luminous intensity of inductor induction and the second curve luminous intensity are adjusted the electricity of lighting transistorStream.
Preferably, described backlight module also comprises light-conductive optic fibre and optical collector, described light-conductive optic fibre one endBe connected with described optical transmitting set, for extraneous light is inputed to described optical transmitting set; Described collectionLight device is connected with the described light-conductive optic fibre other end, for gathering extraneous light.
The present invention also proposes a kind of method that compensates display backlight source, comprises the following steps:
Induction is to the luminous intensity of the extraneous light of described display input;
Control the light transmittance of the viewing area irradiation of ambient light alignment display;
Respond to the luminous intensity of described viewing area according to described light transmittance;
Judge the image mode of display work at present;
Show according to the luminous intensity adjustment of the luminous intensity of image mode, viewing area and extraneous lightThe glow current of device.
Preferably, the described step of responding to the luminous intensity of described viewing area according to light transmittance comprises:
When the light transmittance that induction is irradiated when ambient light alignment viewing area is not 0, the demonstration of viewing area is luminousIntensity;
Sense should be 2D pattern and viewing area in the time that the light transmittance of ambient light alignment viewing area irradiation is 0The first curve luminous intensity under current electric current dutycycle;
Sense should be 3D pattern and viewing area in the time that the light transmittance of ambient light alignment viewing area irradiation is 0The second curve luminous intensity under constant current dutycycle.
Preferably, described luminous according to the luminous intensity of image mode, viewing area and extraneous lightThe step that intensity is adjusted the glow current of display comprises:
When being judged as after 2D pattern, judge whether the luminous intensity of extraneous light is more than or equal to the first songLine luminous intensity;
In the time that the luminous intensity of extraneous light is more than or equal to the first curve luminous intensity, by displayGlow current is closed, and shows luminous intensity while being closed condition according to the glow current of displayAnd the light transmittance of the first curve luminous intensity control ambient light alignment viewing area irradiation;
In the time that the luminous intensity of extraneous light is less than the first curve luminous intensity, control ambient light alignment aobviousThe light transmittance that shows area illumination is for maximum, and show when maximum according to light transmittance luminous intensity andThe first curve luminous intensity is adjusted the glow current of display;
When being judged as after 3D pattern, judge whether the luminous intensity of extraneous light is more than or equal to the second songLine luminous intensity;
In the time that the luminous intensity of extraneous light is more than or equal to the second curve luminous intensity, by displayGlow current is closed, and shows luminous intensity while being closed condition according to the glow current of displayAnd the light transmittance of the second curve luminous intensity control ambient light alignment viewing area irradiation;
In the time that the luminous intensity of extraneous light is less than the second curve luminous intensity, control ambient light alignment aobviousThe light transmittance that shows area illumination is for maximum, and show when maximum according to light transmittance luminous intensity andThe second curve luminous intensity is adjusted the glow current of display.
Preferably, described induction to the step of the luminous intensity of the extraneous light of described display input itBefore comprise: gather extraneous light, and extraneous light inputed to described display.
The present invention also provides a kind of display, comprises above-mentioned backlight module.
A kind of backlight module that the present invention proposes, method and the display in compensation display backlight source, whenThe luminous intensity of extraneous light is more than or equal to the first curve luminous intensity or the second curve is luminous strongWhile spending, the light transmittance that ambient light alignment viewing area is irradiated is transferred to maximum, with to greatest extentUtilize extraneous light light source by way of compensation; When being less than the first curve, the luminous intensity of extraneous light sends outWhen luminous intensity or the second curve luminous intensity, the glow current of display is closed, fall to reachThe effect of the power consumption of low backlight module.
Brief description of the drawings
Fig. 1 is the structural representation of backlight module in prior art;
Fig. 2 is the structural representation of backlight module one embodiment of the present invention;
Fig. 3 is the partial enlarged drawing of A in Fig. 2;
Fig. 4 is the schematic flow sheet that the present invention compensates method first embodiment in display backlight source;
Fig. 5 is the schematic flow sheet that the present invention compensates method second embodiment in display backlight source;
Fig. 6 is that the present invention compensates that in method second embodiment in display backlight source, to obtain the first curve luminousThe schematic flow sheet of intensity;
Fig. 7 is that the present invention compensates in method second embodiment in display backlight source lighting transistor at each electricityThe curve map of the luminous intensity under stream dutycycle;
Fig. 8 is that the present invention compensates display work at present in method second embodiment in display backlight sourceSchematic flow sheet when image mode is 2D pattern;
Fig. 9 is that the present invention compensates display work at present in method second embodiment in display backlight sourceSchematic flow sheet when image mode is 3D pattern.
In order to make the technical scheme of invention clearer, to understand, do further in detail below in conjunction with accompanying drawingState.
Detailed description of the invention
Particularly, incorporated by reference to consulting Fig. 2 and Fig. 3, Fig. 2 is the structure of backlight module one embodiment of the present inventionSchematic diagram, Fig. 3 is the partial enlarged drawing of A in Fig. 2.
In the present embodiment, backlight module comprises: multiple optical transmitting sets 102, multiple lighting transistor 103,Multiple the first inductors 104 and backlight drive module 105.
Wherein, multiple optical transmitting sets 102 are evenly arranged between multiple lighting transistors 103, such as oftenEvery a lighting transistor 103, an optical transmitting set 102 is set, or several every equal numberIndividual lighting transistor 103 arranges an optical transmitting set 102. Multiple the first inductors 104 evenly arrangeBetween multiple lighting transistors 103, when multiple optical transmitting sets 102 are evenly arranged at multiple luminousAfter transistor 103, arrange one every optical transmitting set 102 and the lighting transistor 103 of someThe first inductor 104, the quantity of some optical transmitting sets 102 and lighting transistor 103 can rootAccording to actual conditions formulate, the quantity of for example optical transmitting set 102 and lighting transistor 103 be 8 or10 etc. Backlight drive module 105 and optical transmitting set 102, the first inductor 104 and luminescent crystalPipe 103 connects.
Wherein, optical transmitting set 102 comprises the second inductor 1021 and liquid crystal film switch 1022.
Wherein, optical transmitting set 102 is for receiving to the extraneous light of its input and extraneous light being exported toViewing area. The first inductor 104 is for the luminous intensity of the viewing area of sensitive display. IfBe placed in the second inductor 1021 of optical transmitting set 102 for responding to the luminous intensity of extraneous light, establishThe liquid crystal film switch 1022 that is placed in optical transmitting set 102 shines for controlling ambient light alignment viewing areaThe light transmittance of penetrating, backlight drive module 105 is for judging the image mode of backlight module work at present, and luminous intensity and the second inductor 102 responded to according to image mode, the first inductor 104The luminous intensity of 1 induction is adjusted the electric current of lighting transistor 103.
Wherein, refer to Fig. 3, optical transmitting set 102 is except being provided with the second inductor 1021 and liquid crystalOutside thin film switch 1022, be also provided with diffuser 1023 and shadow shield (in figure, not identifying), wherein, shadow shield is arranged between the second inductor 1021 and liquid crystal film switch 1022. WhenExtraneous light inputs to after optical transmitting set 102, carries out scattering, after scattering through diffuser 1023Extraneous light in shadingUnder the barrier of plate, be divided into two parts, sub-fraction scatters to the second inductor 1021, the second inductionsDevice 1021 is responded to the luminous intensity of extraneous light, and another major part scatters to liquid crystal film switch 1022, by liquid crystal film switch 1022 control ambient light alignment display viewing area irradiateLight transmittance.
Wherein, extraneous light can be the light source such as sunshine or fluorescent lamp.
Wherein, image mode comprises 2D pattern and 3D pattern etc.
Wherein, backlight module also comprises light-conductive optic fibre 101 and optical collector (not shown), light-conductive optic fibreOne end of 101 input interface 1011 is connected with optical collector, and the other end is connected with optical transmitting set 102, optical collector is by the input interface 1011 of the extraneous light input light-conductive optic fibre 101 gathering, by leadingExtraneous light is transported to optical transmitting set 102 by the input interface 1011 of light optical fiber 101.
Compared with prior art, the backlight module in the embodiment of the present invention can input to extraneous lightOptical transmitting set 102, backlight drive module 105 can be according to the image mode of work at present, firstThe luminous intensity that the luminous intensity that inductor 104 is responded to and the second inductor 1021 are responded to is adjusted luminousTransistorized electric current, to reach the object as the compensatory light of backlight module by extraneous light.
Further, the embodiment of the present invention can also be entered according to the image mode of backlight module work at presentThe electric current adjustment of the further lighting transistor 103 of row, does to maximally utilise extraneous lightFor the compensatory light of backlight module, reach the beneficial effect of the power consumption that reduces backlight module.
Wherein, in the time that backlight drive module 105 is judged as 2D pattern, the first inductor 104 is also for working asThe light transmittance that liquid crystal film switch 1022 is controlled is 0 o'clock, the current electricity of inducing luminous transistor 103The first curve luminous intensity under stream dutycycle; In the time that backlight drive module 105 is judged as 3D pattern, when the first inductor 104 is also 0 for the light transmittance of controlling when liquid crystal film switch 1022, senseAnswer the second curve luminous intensity under lighting transistor 103 constant current dutycycles.
Wherein, when the light transmittance of controlling when liquid crystal film switch 1022 is not 0, the first inductor 104 alsoFor responding to the demonstration luminous intensity of viewing area.
Wherein, backlight drive module 105 is further used for when being judged as after 2D pattern, obtain show luminousThe luminous intensity of intensity, the first curve luminous intensity and extraneous light, according to showing luminous intensity, the first curve luminous intensity and extraneous light luminous intensity adjust the glow current of display;
Backlight drive module 105 is further used for when being judged as after 3D pattern, obtain show luminous intensity,The luminous intensity of the second curve luminous intensity and extraneous light, according to showing luminous intensity, secondThe luminous intensity of curve luminous intensity and extraneous light is adjusted the glow current of display.
Further, backlight drive module 105 is also further used in the time being judged as 2D pattern, judgementWhether the luminous intensity that the second inductor 1021 is responded to is more than or equal to the first curve luminous intensity;
When the luminous intensity of responding to when the second inductor 1021 is more than or equal to the first curve luminous intensity,Lighting transistor 103 is closed, and first respond to while being closed condition according to lighting transistor 103The demonstration luminous intensity that device 104 is responded to and the first curve luminous intensity control liquid crystal film switch 1022, to control its light transmittance;
When the luminous intensity of responding to when the second inductor 1021 is less than the first curve luminous intensity, control liquidBrilliant thin film switch 1022, makes its light transmittance for maximum, and controls according to liquid crystal film switch 1022Light transmittance the first inductor 104 is responded to while being maximum demonstration luminous intensity and the first curve luminousIntensity is adjusted the electric current of lighting transistor 103.
Wherein, the first inductor when backlight drive module 105 is closed condition according to lighting transistor 103The demonstration luminous intensity of 104 inductions and the first curve luminous intensity control liquid crystal film switch 1022Light transmittance is specially:
Backlight drive module 105 judge whether demonstration luminous intensity that the first inductor 104 is responded to is greater than orEqual the first curve luminous intensity: if the demonstration luminous intensity that the first inductor 104 is responded to is greater than orEqual the first curve luminous intensity, control its reduction by controlling liquid crystal film switch 1022Light transmittance, if the demonstration luminous intensity that the first inductor 104 is responded to is less than the first curve luminous intensity, control increase light transmittance by controlling liquid crystal film switch 1022. As can be seen here, thisBright backlight module is in the time that the image mode of work at present is 2D pattern, in the time that extraneous light is stronger, can close the electric current of lighting transistor 103, to reach the effect of the power consumption that reduces backlight module。
Wherein, backlight drive module 105 light transmittance controlled according to liquid crystal film switch 1022 are for maximumTime the first inductor 104 demonstration luminous intensity and the first curve luminous intensity of responding to adjust luminous crystalline substanceThe electric current of body pipe 103 is specially:
Backlight drive module 105 judge whether demonstration luminous intensity that the first inductor 104 is responded to is greater than orEqual the first curve luminous intensity: if the demonstration luminous intensity that the first inductor 104 is responded to is greater than orEqual the first curve luminous intensity, the electric current of controlling lighting transistor 103 correspondingly reduces, ifThe demonstration luminous intensity that the first inductor 104 is responded to is less than the first curve luminous intensity, controls and sends outThe electric current of optotransistor 103 correspondingly increases. Because electric current changes, the first curve is luminousIntensity also can be followed variation, and in addition, the luminous intensity of extraneous light may change. ThereforeNo matter be that backlight drive module 105 is controlledThe electric current of lighting transistor 103 processed correspondingly reduces or increases, and backlight drive module 105 also needsCarry out the judgement of next round, judge that the luminous intensity that the second inductor 1021 is responded to isThe no first curve luminous intensity that is more than or equal to is the circulation starting. As can be seen here, of the present inventionBacklight module is in the time that the image mode of work at present is 2D pattern, outside can maximally utilisingBoundary's light, as the compensatory light of backlight module, reaches the effect of the power consumption that reduces backlight module.
Backlight drive module 105 is also further used in the time being judged as 3D pattern, judges the second inductor 1Whether the luminous intensity of 021 induction is more than or equal to the second curve luminous intensity;
When the luminous intensity of responding to when the second inductor 1021 is more than or equal to the second curve luminous intensity,Lighting transistor 103 is closed, and first respond to while being closed condition according to lighting transistor 103The demonstration luminous intensity that device 104 is responded to and the second curve luminous intensity control liquid crystal film switch 1022, to control its light transmittance;
When the luminous intensity of responding to when the second inductor 1021 is less than the second curve luminous intensity, control liquidBrilliant thin film switch 1022, makes its light transmittance for maximum, and controls according to liquid crystal film switch 1022Light transmittance the first inductor 104 is responded to while being maximum demonstration luminous intensity and the second curve luminousIntensity is adjusted the electric current of lighting transistor 103.
Wherein, the first inductor when backlight drive module 105 is closed condition according to lighting transistor 103The demonstration luminous intensity of 104 inductions and the second curve luminous intensity control liquid crystal film switch 1022Light transmittance is specially:
If the demonstration luminous intensity that the first inductor 104 is responded to is more than or equal to the second curve luminous intensity,Control reduction light transmittance by controlling liquid crystal film switch 1022, if the first inductor 104 is feltThe demonstration luminous intensity of answering is less than the second curve luminous intensity, by controlling liquid crystal film switch1022 control increase light transmittance. As can be seen here, backlight module of the present invention is in work at presentWhen image mode is 3D pattern, in the time that extraneous light is stronger, can close lighting transistor 103Electric current, to reach the effect of the power consumption that reduces backlight module.
Wherein, when backlight drive module 105 is maximum according to the light transmittance of liquid crystal film switch 1,022 firstThe luminous intensity that inductor 104 is responded to and the second curve luminous intensity are adjusted lighting transistor 103Electric current is specially:
Backlight drive module 105 judge whether demonstration luminous intensity that the first inductor 104 is responded to is greater than orEqual the second curve luminous intensity: if the demonstration luminous intensity that the first inductor 104 is responded to is greater than orEqualThe second curve luminous intensity, the electric current of controlling lighting transistor 103 correspondingly reduces, if firstThe demonstration luminous intensity that inductor 104 is responded to is less than the second curve luminous intensity, controls luminous crystalline substanceThe electric current of body pipe 103 correspondingly increases.
Wherein, because the image mode of backlight module work at present is 3D pattern, under 3D pattern, the back of the bodyOptical drive module 105 is exported the electric current of constant duty ratio to each lighting transistor 103, therefore,Only need the first inductor 104 to respond to once to obtain the second curve luminous intensity, i.e. the second curveLuminous intensity is a fixed value. But the luminous intensity of extraneous light may change, because ofThis electric current that is no matter backlight drive module 105 is controlled lighting transistor 103 correspondingly reduce orIncrease, backlight drive module 105 also needs to carry out the judgement of next round, judges the second senseAnswering luminous intensity that device 1021 is responded to whether to be more than or equal to the second curve luminous intensity is what startCirculation. As can be seen here, backlight module of the present invention is 3D pattern at the image mode of work at presentTime, can maximally utilise the compensatory light of extraneous light as backlight module, reach and fallThe effect of the power consumption of low backlight module.
Can find out by foregoing description: backlight module of the present invention, when the luminous intensity of extraneous lightWhile being more than or equal to the first curve luminous intensity or the second curve luminous intensity, backlight drive module105 will be transferred to maximum by light transmittance by controlling liquid crystal film switch 1022, with to greatest extentUtilize the compensatory light of extraneous light as backlight module; When the luminous intensity of extraneous light is less thanWhen the first curve luminous intensity or the second curve luminous intensity, backlight drive module 105 is by luminous crystalline substanceBody pipe 103 is closed, to reach the beneficial effect of the power consumption that reduces backlight module.
Refer to Fig. 4, Fig. 4 is the flow process that the present invention compensates method first embodiment in display backlight sourceSchematic diagram, the method in embodiment of the present invention compensation display backlight source comprises:
Step S101, induction is to the luminous intensity of the extraneous light of described display input;
Wherein, extraneous light can be the light source such as sunshine or fluorescent lamp.
Wherein, extraneous light can be inputed to the optical transmitting set that is installed on display, by optical transmitting setBy the viewing area of extraneous light input display. Can be by light intensity inductor induction ambient lightThe luminous intensity of line.
Step S102, the light transmittance that the viewing area of control ambient light alignment display is irradiated;
Wherein, can utilize a diffuser that the extraneous light of input is carried out to scattering.
Wherein, can irradiate by the ambient light alignment viewing area after liquid crystal film switch control scatteringLight transmittance.
Step S103, responds to the luminous intensity of described viewing area according to described light transmittance;
Wherein, the light transmittance difference that ambient light alignment viewing area is irradiated, viewing area is luminous strongSpend also not identical.
Wherein, can a luminous intensity inductor be installed in the viewing area of display, for responding to demonstrationThe luminous intensity in region.
Step S104, judges the image mode of display work at present;
Wherein, the image mode of display work comprises 2D pattern and 3D pattern etc., different picture mouldsFormula is by different glow current control display lightings.
Wherein, can judge that the image mode of display work at present is by backlight drive module2D pattern or 3D pattern.
Step S105, luminous strong according to the luminous intensity of image mode, viewing area and extraneous lightDegree is adjusted the glow current of display.
Wherein, can obtain by backlight drive module luminous intensity and the ambient light of viewing areaThe luminous intensity of line, and luminous according to the image mode of display work at present, viewing areaThe luminous intensity of intensity and extraneous light is adjusted the glow current of display.
Compared with prior art, the method in compensation display backlight of the present invention source can be by outside gatheringBoundary's light inputs to display, according to the image mode of display work at present, extraneous lightThe luminous intensity of luminous intensity and viewing area is adjusted the glow current of display, with reach by outsideBoundary's light is as the object of the compensatory light of backlight.
Refer to Fig. 5, Fig. 5 is the flow process that the present invention compensates method second embodiment in display backlight sourceSchematic diagram. The present embodiment is different from method first embodiment in above-mentioned compensation display backlight sourceBe, the present embodiment also comprised step S100 before step S101, wherein,
Step S100, gathers extraneous light, and extraneous light is inputed to described display.
Wherein, an optical collector can be set and gather extraneous light.
Wherein, light-conductive optic fibre can be set extraneous light is inputed to display.
Incorporated by reference to consulting Fig. 6 and Fig. 7, Fig. 6 is that the method second that the present invention compensates display backlight source is implementedIn example, obtain the schematic flow sheet of the first curve luminous intensity, Fig. 7 is that the present invention compensates the display back of the bodyThe luminous intensity of lighting transistor under each electric current dutycycle in method second embodiment of light sourceCurve map.
Wherein, step S103 comprises according to the step of the luminous intensity of light transmittance induction viewing area:
Step S1031, when the light transmittance irradiating when ambient light alignment viewing area is not 0, induction showsThe demonstration luminous intensity in region;
Step S1032, the light transmittance irradiating when for 2D pattern and when ambient light alignment viewing area is 0Time, the first curve luminous intensity under the current electric current dutycycle in induction viewing area;
Step S1033, the light transmittance irradiating when for 3D pattern and when ambient light alignment viewing area is 0Time, the second curve luminous intensity under the constant current dutycycle of induction viewing area.
Wherein, induction obtains the first curve luminous intensity and refers to Fig. 6, comprises the following steps:
Step S401, the light transmittance of controlling ambient light alignment viewing area is 0;
Step S402, with the lighting transistor of minimum current dutycycle opening display;
Step S403, induction obtains the first curve luminous intensity;
Step S404, the dutycycle of the electric current of the lighting transistor of increase display;
Step S405, judges whether the electric current of the lighting transistor of display is maximum duty cycle, ifMaximum duty cycle, process ends, if not maximum duty cycle enters step S403, continuesContinuous induction obtains the first curve luminous intensity, until flow process finishes.
Wherein, the relation of the first curve luminous intensity and electric current dutycycle refers to Fig. 7.
In like manner, can obtain the second curve luminous intensity with similar method, what deserves to be explained is, theTwo curve luminous intensities are a fixed value.
Further, the present invention can also carry out further according to the image mode of display work at presentThe adjustment of glow current, to maximally utilise the compensation of extraneous light as backlight moduleLight source, reaches the beneficial effect of power consumption that reduces backlight module.
Wherein, step S105 sending out according to the luminous intensity of image mode, viewing area and extraneous lightThe glow current that luminous intensity is adjusted display specifically comprises:
When being judged as after 2D pattern, according to showing luminous intensity, the first curve luminous intensity and ambient lightThe luminous intensity of line is adjusted the glow current of display;
When being judged as after 3D pattern, according to showing luminous intensity, the second curve luminous intensity and ambient lightThe luminous intensity of line is adjusted the glow current of display.
Refer to Fig. 8, Fig. 8 is that the present invention compensates in method second embodiment in display backlight source and showsThe schematic flow sheet when image mode of device work at present is 2D pattern. Wherein, when being judged as 2DPatternTime, concrete steps comprise:
Step S200, the image mode that judges display work at present is 2D pattern;
Step S201, it is luminous strong whether the luminous intensity that judges extraneous light is more than or equal to the first curveDegree, if so, enters step S205, if not, enters step S202;
Step S202, in the time that the luminous intensity of extraneous light is less than the first curve luminous intensity, outside controlThe light transmittance that boundary's light irradiates to viewing area is maximum;
Step S203, judges and shows whether luminous intensity is more than or equal to the first curve luminous intensity, ifNo, enter step S209, if so, enter step S204;
Step S204, the glow current of reduction display, enters step S201;
Step S205, closes the glow current of display;
Step S206, judges and shows whether luminous intensity is more than or equal to the first curve luminous intensity, ifNo, enter step S208, if so, enter step S207;
Step S207, reduces the light transmittance that ambient light alignment viewing area is irradiated, and enters step S201;
Step S208, increases the light transmittance that ambient light alignment viewing area is irradiated, and enters step S201
Step S209, the glow current of increase display, enters step S201.
Refer to Fig. 9, Fig. 9 is that the present invention compensates in method second embodiment in display backlight source and showsThe schematic flow sheet when image mode of device work at present is 3D pattern. Wherein, when being judged as 3DWhen pattern, concrete steps comprise:
Step S300, the image mode that judges display work at present is 3D pattern;
Step S301, it is luminous strong whether the luminous intensity that judges extraneous light is more than or equal to the second curveDegree, if so, enters step S305, if not, enters step S302;
Step S302, in the time that the luminous intensity of extraneous light is less than the second curve luminous intensity, outside controlThe light transmittance that boundary's light irradiates to viewing area is maximum;
Step S303, judges and shows whether luminous intensity is more than or equal to the second curve luminous intensity, ifNo, enter step S309, if so, enter step S304;
Step S304, the glow current of reduction display, enters step S301;
Step S305, closes the glow current of display;
Step S306, judges and shows whether luminous intensity is more than or equal to the second curve luminous intensity, ifNo, enter step S308, if so, enter step S307;
Step S307, reduces the light transmittance that ambient light alignment viewing area is irradiated, and enters step S301;
Step S308, increases the light transmittance that ambient light alignment viewing area is irradiated, and enters step S301
Step S309, the glow current of increase display, enters step S301.
Can find out by foregoing description: the method in the compensation display backlight source of the embodiment of the present invention,When the luminous intensity of extraneous light be more than or equal to the first curve luminous intensity or the second curve luminousWhen intensity, the light transmittance that ambient light alignment viewing area is irradiated is transferred to maximum, with to greatest extentUtilize ambient light line light source by way of compensation; When the luminous intensity of extraneous light is less than the first curveWhen luminous intensity or the second curve luminous intensity, by closing the glow current of display, to reachReduce the effect of the power consumption of backlight module.
The embodiment of the invention also discloses a kind of display, comprise above-mentioned backlight module.
The foregoing is only the preferred embodiments of the present invention, not thereby limit the scope of the claims of the present invention, every equivalent structure or flow process conversion that utilizes description of the present invention and accompanying drawing content to do, orDirectly or indirectly be used in other relevant technical field, be all in like manner included in patent of the present inventionIn protection domain.
Claims (8)
1. a backlight module, comprises backlight drive module and multiple lighting transistor, it is characterized in that,Also comprise multiple optical transmitting sets and multiple the first inductor;
Described multiple optical transmitting set is evenly arranged between described multiple lighting transistor, described optical transmitting setComprise the second inductor and liquid crystal film switch, described the second inductor is for responding to described optical transmitting setThe luminous intensity of extraneous light of input, described liquid crystal film switch is used for controlling described in ambient light alignment to be carried on the backThe light transmittance that the viewing area of optical mode group is irradiated;
Described multiple the first inductor is evenly arranged between described multiple lighting transistor, for according to instituteThe luminous intensity of stating light transmittance induction viewing area, wherein, described the first inductor is specifically for working as liquid crystalThe light transmittance of thin film switch control is not 0 o'clock, the demonstration luminous intensity of induction viewing area; The first inductionDevice is also for being judged as 2D pattern and when the light transmittance of liquid crystal film switch control being when backlight drive module0 o'clock, the first curve luminous intensity under the current electric current dutycycle of inducing luminous transistor; The first inductionDevice is also for being judged as 3D pattern and when the light transmittance of liquid crystal film switch control being when backlight drive module0 o'clock, the second curve luminous intensity under inducing luminous transistor constant current dutycycle;
Described backlight drive module respectively with described optical transmitting set, described the first inductor and described luminous crystalline substanceBody pipe connect, for judging the image mode of backlight module work at present, and according to described image mode,The luminous intensity of the luminous intensity of the first inductor induction and the induction of the second inductor is adjusted described luminescent crystalThe electric current of pipe.
2. backlight module according to claim 1, is characterized in that, described backlight drive module toolBody is used for when being judged as after 2D pattern, according to showing luminous intensity, first curve luminous intensity and the external worldThe luminous intensity of light is adjusted the glow current of display;
When being judged as after 3D pattern, according to showing luminous intensity, the second curve luminous intensity and ambient lightThe luminous intensity of line is adjusted the glow current of display.
3. backlight module according to claim 2, is characterized in that,
Described backlight drive module is also further used for, when being judged as after 2D pattern, judging the second inductorWhether the luminous intensity of induction is more than or equal to the first curve luminous intensity;
In the time that the luminous intensity of the second inductor induction is more than or equal to the first curve luminous intensity, by luminousTransistor is closed, and the demonstration of the first inductor induction is luminous strong while being closed condition according to lighting transistorThe light transmittance of degree and the first curve luminous intensity control liquid crystal film switch;
In the time that the luminous intensity of the second inductor induction is less than the first curve luminous intensity, control liquid crystal filmThe light transmittance of switch is maximum, and the first inductor sense while be maximum according to the light transmittance of liquid crystal film switchThe demonstration luminous intensity of answering and the first curve luminous intensity are adjusted the electric current of lighting transistor;
Backlight drive module is also further used for when being judged as after 3D pattern, judges the second inductor inductionLuminous intensity whether be more than or equal to the second curve luminous intensity;
In the time that the luminous intensity of the second inductor induction is more than or equal to the second curve luminous intensity, by luminousTransistor is closed, and the demonstration of the first inductor induction is luminous strong while being closed condition according to lighting transistorThe light transmittance of degree and the second curve luminous intensity control liquid crystal film switch;
In the time that the luminous intensity of the second inductor induction is less than the second curve luminous intensity, control liquid crystal filmThe light transmittance of switch is maximum, and the first inductor sense while be maximum according to the light transmittance of liquid crystal film switchThe demonstration luminous intensity of answering and the second curve luminous intensity are adjusted the electric current of lighting transistor.
4. according to the backlight module described in claim 1-3 any one, described backlight module also comprises leaded lightOptical fiber and optical collector, described light-conductive optic fibre one end is connected with described optical transmitting set, for by defeated extraneous lightEnter to described optical transmitting set; Described optical collector is connected with the described light-conductive optic fibre other end, for gathering the external worldLight.
5. a method that compensates display backlight source, is characterized in that, comprises the following steps:
Induction is to the luminous intensity of the extraneous light of described display input;
Control the light transmittance of the viewing area irradiation of ambient light alignment display;
Respond to the luminous intensity of described viewing area according to described light transmittance, wherein, described according to describedThe step that light rate is responded to the luminous intensity of described viewing area comprises: induction is when ambient light alignment viewing areaThe light transmittance irradiating is not the demonstration luminous intensity of 0 o'clock viewing area; Sense should be 2D pattern and when outsideThe light transmittance that boundary's light irradiates to viewing area is 0 o'clock the first song under the current electric current dutycycle in viewing areaLine luminous intensity; Sense should be 3D pattern and works as the light transmittance irradiating ambient light alignment viewing area is 0Time the second curve luminous intensity under viewing area constant current dutycycle;
Judge the image mode of display work at present;
Adjust display according to the luminous intensity of the luminous intensity of image mode, viewing area and extraneous lightGlow current.
6. method according to claim 5, is characterized in that, described according to image mode, demonstrationThe step that the luminous intensity in region and the luminous intensity of extraneous light are adjusted the glow current of display comprises:
When being judged as after 2D pattern, judge whether the luminous intensity of extraneous light is more than or equal to the first songLine luminous intensity;
In the time that the luminous intensity of extraneous light is more than or equal to the first curve luminous intensity, by sending out of displayPhotoelectric current is closed, and shows luminous intensity and the first song while being closed condition according to the glow current of displayThe light transmittance that line luminous intensity control ambient light alignment viewing area is irradiated;
In the time that the luminous intensity of extraneous light is less than the first curve luminous intensity, controls ambient light alignment and showThe light transmittance of area illumination is maximum, and shows luminous intensity and the first curve when maximum according to light transmittanceLuminous intensity is adjusted the glow current of display;
When being judged as after 3D pattern, judge whether the luminous intensity of extraneous light is more than or equal to the second songLine luminous intensity;
In the time that the luminous intensity of extraneous light is more than or equal to the second curve luminous intensity, by sending out of displayPhotoelectric current is closed, and shows luminous intensity and the second song while being closed condition according to the glow current of displayThe light transmittance that line luminous intensity control ambient light alignment viewing area is irradiated;
In the time that the luminous intensity of extraneous light is less than the second curve luminous intensity, controls ambient light alignment and showThe light transmittance of area illumination is maximum, and shows luminous intensity and the second curve when maximum according to light transmittanceLuminous intensity is adjusted the glow current of display.
7. according to the method described in claim 5 or 6, it is characterized in that, described induction is to described demonstrationBefore the step of the luminous intensity of the extraneous light of device input, comprise:
Gather extraneous light, and extraneous light is inputed to described display.
8. a display, is characterized in that, comprises the mould backlight described in any one in claim 1-4Group.
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| CN202056691U (en) * | 2011-05-26 | 2011-11-30 | 北京京东方光电科技有限公司 | Backlight module of display and liquid crystal display |
| CN102298904A (en) * | 2010-06-28 | 2011-12-28 | 华为终端有限公司 | Method for adjusting backlight brightness of display device and equipment with display device |
| CN102323691A (en) * | 2007-02-28 | 2012-01-18 | 乐金显示有限公司 | Display device |
| CN103165085A (en) * | 2013-03-29 | 2013-06-19 | 深圳市华星光电技术有限公司 | Backlight drive circuit, driving method thereof and liquid crystal device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102323691A (en) * | 2007-02-28 | 2012-01-18 | 乐金显示有限公司 | Display device |
| CN102298904A (en) * | 2010-06-28 | 2011-12-28 | 华为终端有限公司 | Method for adjusting backlight brightness of display device and equipment with display device |
| CN202056691U (en) * | 2011-05-26 | 2011-11-30 | 北京京东方光电科技有限公司 | Backlight module of display and liquid crystal display |
| CN103165085A (en) * | 2013-03-29 | 2013-06-19 | 深圳市华星光电技术有限公司 | Backlight drive circuit, driving method thereof and liquid crystal device |
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