CN103415105A - Backlight units, display backlight compensation method, and display - Google Patents
Backlight units, display backlight compensation method, and display Download PDFInfo
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- CN103415105A CN103415105A CN2013102750421A CN201310275042A CN103415105A CN 103415105 A CN103415105 A CN 103415105A CN 2013102750421 A CN2013102750421 A CN 2013102750421A CN 201310275042 A CN201310275042 A CN 201310275042A CN 103415105 A CN103415105 A CN 103415105A
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Abstract
The invention relates to backlight units, a display backlight compensation method, and a display. The display backlight compensation method comprises the following steps of : inducting a luminous intensity of outside light inputted into the display; controlling a light transmittance when the outside light illuminates a display area of the display; inducting the luminous intensity of the display area according to the light transmittance; judging a current working picture mode of the display; and adjusting a luminous current of the display according to the picture mode, the luminous intensity of the display area, and the luminous intensity of the outside light. According to the invention, the outside light can be used to compensate the backlight of the display so as to reduce the power consumption of the display.
Description
Technical field
The present invention relates to the display technology field, relate in particular to method and the display in a kind of backlight module, compensation display backlight source.
Background technology
Liquid crystal display (Liquid Crystal Display, LCD) has been widely used in various electronic products, and the liquid crystal display major part is the backlight liquid crystal display at present, and the backlight liquid crystal display is comprised of display panels and backlight module.Wherein, the light source of backlight module is mainly cathode fluorescent tube or light-emitting diode (Light Emitting Diode, LED), cathode fluorescent tube sends white light by the mixed light of fluorescent material, but the power consumption of fluorescent tube and volume are all larger, substantially be eliminated at present, and the LED light-emitting diode becomes main flow.
As shown in Figure 1, Fig. 1 is the structural representation of backlight module in prior art, and backlight module comprises lighting transistor 203, backlight drive module 205, light guide plate 206 and liquid crystal panel 207.As seen from Figure 1, the backlight of backlight module is lighting transistor 203, and its backlight is more single, and its power consumption as can be known can't be little, is unfavorable for extending the life-span of lighting transistor 203.For example, although the method for the ambient light utilized as backlight arranged in prior art, just separately using ambient light as backlight, utilizes 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 supplementing of other light sources, for large-sized display, the power that its backlight module consumes is still very large, because the brightness of LED lumination of light emitting diode is higher, be unfavorable for extending the life-span of LED light-emitting diode again.
Summary of the invention
Main purpose of the present invention is to provide method and the display in a kind of backlight module, compensation display backlight source, is 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, comprises backlight drive module and a plurality of lighting transistor, it is characterized in that, also comprises a plurality of optical transmitting sets and a plurality of the first inductor;
Described a plurality of optical transmitting set evenly is arranged between described a plurality of lighting transistor, described optical transmitting set comprises the second inductor and liquid crystal film switch, described the second inductor is for the luminous intensity of induction to the extraneous light of described optical transmitting set input, the light transmittance that described liquid crystal film switch irradiates for the viewing area of controlling the described backlight module of ambient light alignment;
Described a plurality of the first inductor evenly is arranged between described a plurality of lighting transistor, for the luminous intensity according to described light transmittance induction viewing area;
Described backlight drive module is connected with described optical transmitting set, described the first inductor and described lighting transistor respectively, for judging the image mode of backlight module work at present, and according to the luminous intensity of described image mode, the first inductor induction and the electric current of the described lighting transistor of luminous intensity adjustment that the second inductor is responded to.
Preferably, when described the first inductor specifically is not 0 for the light transmittance of controlling when the liquid crystal film switch, the demonstration luminous intensity of induction viewing area;
When the first inductor also is 0 for the light transmittance that is judged as the 2D pattern when the backlight drive module and control when the liquid crystal film switch, the first curve luminous intensity under the current electric current duty ratio of inducing luminous transistor;
When the first inductor also is 0 for the light transmittance that is judged as the 3D pattern when the backlight drive module and control when the liquid crystal film switch, the second curve luminous intensity under inducing luminous transistor constant current duty ratio.
Preferably, described backlight drive module, specifically for after being judged as the 2D pattern, is adjusted the glow current of display according to the luminous intensity that shows luminous intensity, the first curve luminous intensity and extraneous light;
After being judged as the 3D pattern, according to the luminous intensity that shows luminous intensity, the second curve luminous intensity and extraneous light, adjust the glow current of display.
Preferably, the backlight drive module also is further used for after being judged as the 2D pattern, judges whether the luminous intensity of the second inductor induction is more than or equal to the first curve luminous intensity;
When the luminous intensity of the second inductor induction is more than or equal to the first curve luminous intensity, lighting transistor is closed, and the demonstration luminous intensity of the first inductor induction while being closed condition according to lighting transistor and the first curve luminous intensity are controlled the light transmittance of liquid crystal film switch;
When the luminous intensity of the second inductor induction is less than the first curve luminous intensity, the light transmittance of controlling the liquid crystal film switch be maximum, and the demonstration luminous intensity that the first inductor is responded to while be maximum according to the light transmittance of liquid crystal film switch and the electric current of the first curve luminous intensity adjustment lighting transistor;
The backlight drive module also is further used for after being judged as the 3D pattern, judges whether the luminous intensity of the second inductor induction is more than or equal to the second curve luminous intensity;
When the luminous intensity of the second inductor induction is more than or equal to the second curve luminous intensity, lighting transistor is closed, and the demonstration luminous intensity of the first inductor induction while being closed condition according to lighting transistor and the second curve luminous intensity are controlled the light transmittance of liquid crystal film switch;
When the luminous intensity of the second inductor induction is less than the second curve luminous intensity, the light transmittance of controlling the liquid crystal film switch be maximum, and the demonstration luminous intensity that the first inductor is responded to while be maximum according to the light transmittance of liquid crystal film switch and the electric current of the second curve luminous intensity adjustment lighting transistor.
Preferably, described backlight module also comprises light-conductive optic fibre and optical collector, and described light-conductive optic fibre one end is connected with described optical transmitting set, for extraneous light is inputed to described optical transmitting set; Described optical collector is connected with the described light-conductive optic fibre other end, be used to gathering extraneous light.
The present invention also proposes a kind of method that compensates the 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;
Luminous intensity according to the described viewing area of described light transmittance induction;
The image mode of judgement display work at present;
According to the luminous intensity of the luminous intensity of image mode, viewing area and extraneous light, adjust the glow current of display.
Preferably, the step of described luminous intensity according to the described viewing area of light transmittance induction comprises:
The demonstration luminous intensity of viewing area when the light transmittance that induction is irradiated when ambient light alignment viewing area is not 0;
Sense should be the 2D pattern and the first curve luminous intensity under the current electric current duty ratio in viewing area when the light transmittance of ambient light alignment viewing area irradiation is 0;
Sense should be the 3D pattern and the second curve luminous intensity under the constant current duty ratio of viewing area when the light transmittance of ambient light alignment viewing area irradiation is 0.
Preferably, the step of the glow current of the luminous intensity of described luminous intensity according to image mode, viewing area and extraneous light adjustment display comprises:
After being judged as the 2D pattern, judge whether the luminous intensity of extraneous light is more than or equal to the first curve luminous intensity;
When the luminous intensity of extraneous light is more than or equal to the first curve luminous intensity, the glow current of display is closed, and show that luminous intensity and the first curve luminous intensity control the light transmittance that ambient light alignment viewing area is irradiated while according to the glow current of display, being closed condition;
When the luminous intensity of extraneous light was less than the first curve luminous intensity, it be maximum controlling the light transmittance irradiated ambient light alignment viewing area, and the glow current of demonstration luminous intensity and the first curve luminous intensity adjustment display while be maximum according to light transmittance;
After being judged as the 3D pattern, judge whether the luminous intensity of extraneous light is more than or equal to the second curve luminous intensity;
When the luminous intensity of extraneous light is more than or equal to the second curve luminous intensity, the glow current of display is closed, and show that luminous intensity and the second curve luminous intensity control the light transmittance that ambient light alignment viewing area is irradiated while according to the glow current of display, being closed condition;
When the luminous intensity of extraneous light was less than the second curve luminous intensity, it be maximum controlling the light transmittance irradiated ambient light alignment viewing area, and the glow current of demonstration luminous intensity and the second curve luminous intensity adjustment display while be maximum according to light transmittance.
Preferably, described induction comprised before the step of the luminous intensity of the extraneous light of described display input: gather extraneous light, and extraneous light is inputed to described display.
The present invention also provides a kind of display, comprises above-mentioned backlight module.
Method and the display in a kind of backlight module that the present invention proposes, compensation display backlight source, when the luminous intensity of extraneous light is more than or equal to the first curve luminous intensity or the second curve luminous intensity, the light transmittance that ambient light alignment viewing area is irradiated is transferred to maximum, to maximally utilise extraneous light light source by way of compensation; When the luminous intensity of extraneous light is less than the first curve luminous intensity or the second curve luminous intensity, the glow current of display is closed, to reach the effect of the power consumption that reduces backlight module.
The accompanying drawing explanation
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 the schematic flow sheet that obtains the first curve luminous intensity in method second embodiment in display backlight source;
Fig. 7 is the curve chart that the present invention compensates the luminous intensity of lighting transistor under each electric current duty ratio in method second embodiment in display backlight source;
Fig. 8 is image mode that the present invention compensates display work at present in method second embodiment in the display backlight source schematic flow sheet while being the 2D pattern;
Fig. 9 is image mode that the present invention compensates display work at present in method second embodiment in the display backlight source schematic flow sheet while being the 3D pattern.
In order to make the technical scheme of inventing clearer, clear, be described in further detail below in conjunction with accompanying drawing.
Embodiment
Particularly, please in conjunction with consulting Fig. 2 and Fig. 3, Fig. 2 is the structural representation of backlight module one embodiment of the present invention, and Fig. 3 is the partial enlarged drawing of A in Fig. 2.
In the present embodiment, backlight module comprises: a plurality of optical transmitting sets 102, a plurality of lighting transistor 103, a plurality of the first inductor 104 and backlight drive module 105.
Wherein, a plurality of optical transmitting sets 102 evenly are arranged between a plurality of lighting transistors 103, such as every a lighting transistor 103, an optical transmitting set 102 being set, or every several lighting transistors 103 of equal number, an optical transmitting set 102 are set.A plurality of the first inductors 104 evenly are arranged between a plurality of lighting transistors 103, after a plurality of optical transmitting sets 102 evenly are arranged at a plurality of lighting transistors 103, optical transmitting set 102 and lighting transistor 103 every some arrange first inductor 104, the quantity of some optical transmitting sets 102 and lighting transistor 103 can be formulated according to actual conditions, is 8 or 10 etc. such as the quantity of optical transmitting set 102 and lighting transistor 103.Backlight drive module 105 is connected with optical transmitting set 102, the first inductor 104 and lighting transistor 103.
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 exporting extraneous light to viewing area.The first inductor 104 is for the luminous intensity of the viewing area of sensitive display.Be arranged at the second inductor 1021 of optical transmitting set 102 be used to responding to the luminous intensity of extraneous light, be arranged at the liquid crystal film switch 1022 of optical transmitting set 102 be used to controlling the light transmittance of ambient light alignment viewing area irradiation, backlight drive module 105 is be used to judging the image mode of backlight module work at present, and according to the luminous intensity of the luminous intensity of image mode, the first inductor 104 inductions and the second inductor 1021 inductions, adjusts the electric current of lighting transistor 103.
Wherein, refer to Fig. 3, optical transmitting set 102, except being provided with the second inductor 1021 and liquid crystal film switch 1022, also is provided with diffuser 1023 and shadow shield (not identifying in figure), wherein, shadow shield is arranged between the second inductor 1021 and liquid crystal film switch 1022.After extraneous light inputs to optical transmitting set 102, through diffuser 1023, carry out scattering, extraneous light after scattering is divided into two parts under the barrier of shadow shield, sub-fraction scatters to the second inductor 1021, the luminous intensity of the extraneous light of the second inductor 1021 induction, another major part scatters to liquid crystal film switch 1022, by liquid crystal film switch 1022, controls the light transmittance of the viewing area irradiation of ambient light alignment display.
Wherein, extraneous light can be the light sources such as sunlight 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), one end of the input interface 1011 of light-conductive optic fibre 101 is connected with optical collector, the other end is connected with optical transmitting set 102, the input interface 1011 of the extraneous light input light-conductive optic fibre 101 that optical collector will gather, transport to optical transmitting set 102 by the input interface 1011 of light-conductive optic fibre 101 by extraneous light.
Compared with prior art, backlight module in the embodiment of the present invention can input to optical transmitting set 102 by extraneous light, backlight drive module 105 can, according to the image mode of work at present, the luminous intensity of the first inductor 104 inductions and the electric current of the luminous intensity adjustment lighting transistor that the second inductor 1021 is responded to, be usingd and reach the purpose of extraneous light as the compensatory light of backlight module.
Further, the embodiment of the present invention can also be carried out according to the image mode of backlight module work at present the electric current adjustment of further lighting transistor 103, using and maximally utilise the compensatory light of extraneous light as backlight module, reach the beneficial effect of the power consumption that reduces backlight module.
Wherein, when backlight drive module 105 is judged as the 2D pattern, when the first inductor 104 also is 0 for the light transmittance of controlling when liquid crystal film switch 1022, the first curve luminous intensity under the current electric current duty ratio of inducing luminous transistor 103; When backlight drive module 105 is judged as the 3D pattern, when the first inductor 104 also is 0 for the light transmittance of controlling when liquid crystal film switch 1022, the second curve luminous intensity under inducing luminous transistor 103 constant current duty ratios.
Wherein, when the light transmittance of liquid crystal film switch 1022 controls was not 0, the first inductor 104 was also be used to responding to the demonstration luminous intensity of viewing area.
Wherein, backlight drive module 105 is further used for after being judged as the 2D pattern, obtain the luminous intensity that shows luminous intensity, the first curve luminous intensity and extraneous light, according to the luminous intensity that shows luminous intensity, the first curve luminous intensity and extraneous light, adjust the glow current of display;
Further, backlight drive module 105 also is further used for when being judged as the 2D pattern, judges whether the luminous intensity of the second inductor 1021 inductions is more than or equal to the first curve luminous intensity;
When the luminous intensity of the second inductor 1021 inductions is more than or equal to the first curve luminous intensity, lighting transistor 103 is closed, and the demonstration luminous intensity of the first inductor 104 inductions while being closed condition according to lighting transistor 103 and the first curve luminous intensity control liquid crystal film switch 1022, to control its light transmittance;
When the luminous intensity of the second inductor 1021 inductions is less than the first curve luminous intensity, control liquid crystal film switch 1022, make its light transmittance for maximum, and the demonstration luminous intensity of the first inductor 104 inductions while be maximum according to the light transmittance that liquid crystal film switch 1022 is controlled and the electric current of the first curve luminous intensity adjustment lighting transistor 103.
When wherein, backlight drive module 105 was closed condition according to lighting transistor 103, the light transmittance of the demonstration luminous intensity of the first inductor 104 inductions and the first curve luminous intensity control liquid crystal film switch 1022 was specially:
Wherein, the demonstration luminous intensity of backlight drive module 105 light transmittance controlled according to liquid crystal film switch 1022 the first inductor 104 inductions when maximum and the electric current that the first curve luminous intensity is adjusted lighting transistor 103 are specially:
When the luminous intensity of the second inductor 1021 inductions is more than or equal to the second curve luminous intensity, lighting transistor 103 is closed, and the demonstration luminous intensity of the first inductor 104 inductions while being closed condition according to lighting transistor 103 and the second curve luminous intensity control liquid crystal film switch 1022, to control its light transmittance;
When the luminous intensity of the second inductor 1021 inductions is less than the second curve luminous intensity, control liquid crystal film switch 1022, make its light transmittance for maximum, and the demonstration luminous intensity of the first inductor 104 inductions while be maximum according to the light transmittance that liquid crystal film switch 1022 is controlled and the electric current of the second curve luminous intensity adjustment lighting transistor 103.
When wherein, backlight drive module 105 was closed condition according to lighting transistor 103, the light transmittance of the demonstration luminous intensity of the first inductor 104 inductions and the second curve luminous intensity control liquid crystal film switch 1022 was specially:
If the demonstration luminous intensity of the first inductor 104 inductions is more than or equal to the second curve luminous intensity, by controlling liquid crystal film switch 1022, control the reduction light transmittance, if the demonstration luminous intensity of the first inductor 104 inductions is less than the second curve luminous intensity, by controlling liquid crystal film switch 1022, control the increase light transmittance.As can be seen here, when backlight module of the present invention is the 3D pattern at the image mode of work at present, when 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 is specially according to the luminous intensity of the light transmittance of liquid crystal film switch 1022 the first inductor 104 inductions when maximum and the electric current that the second curve luminous intensity is adjusted lighting transistor 103:
Wherein, because the image mode of backlight module work at present is the 3D pattern, under the 3D pattern, the electric current of backlight drive module 105 output constant duty ratios is given each lighting transistor 103, therefore, only need the first inductor 104 inductions once to obtain the second curve luminous intensity, namely the second curve luminous intensity is a fixed value.But, the luminous intensity of extraneous light may change, therefore no matter be that the electric current that backlight drive module 105 is controlled lighting transistor 103 correspondingly reduces or increases, backlight drive module 105 also needs to carry out the judgement of next round, judges namely whether the luminous intensity of the second inductor 1021 inductions is more than or equal to the circulation of the second curve luminous intensity for starting.As can be seen here, when backlight module of the present invention is the 3D pattern at the image mode of work at present, can maximally utilise the compensatory light of extraneous light as backlight module, reach the effect of the power consumption that reduces backlight module.
By foregoing description, can find out: backlight module of the present invention, when the luminous intensity of extraneous light is more than or equal to the first curve luminous intensity or the second curve luminous intensity, backlight drive module 105 will be transferred to maximum by light transmittance by controlling liquid crystal film switch 1022, using and maximally utilise the compensatory light of extraneous light as backlight module; When the luminous intensity of extraneous light was less than the first curve luminous intensity or the second curve luminous intensity, backlight drive module 105 was closed lighting transistor 103, to reach the beneficial effect of the power consumption that reduces backlight module.
Refer to Fig. 4, Fig. 4 is the schematic flow sheet that the present invention compensates method first embodiment in display backlight source, and 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 sources such as sunlight or fluorescent lamp.
Wherein, extraneous light can be inputed to the optical transmitting set that is installed on display, by the viewing area of optical transmitting set by extraneous light input display.Can be by the luminous intensity of the extraneous light of light intensity inductor induction.
Step S102, the light transmittance that the viewing area of control ambient light alignment display is irradiated;
Wherein, can utilize the extraneous light that a diffuser will be inputted to carry out scattering.
Wherein, can be by the light transmittance of the ambient light alignment viewing area irradiation after liquid crystal film switch control scattering.
Step S103, according to the luminous intensity of the described viewing area of described light transmittance induction;
Wherein, the light transmittance difference that ambient light alignment viewing area is irradiated, the luminous intensity of viewing area is not identical yet.
Wherein, can one luminous intensity inductor be installed in the viewing area of display, be used to responding to the luminous intensity of viewing area.
Step S104, the image mode of judgement display work at present;
Wherein, the image mode of display work comprises 2D pattern and 3D pattern etc., and different image modes is controlled display lighting by different glow currents.
Wherein, can judge that the image mode of display work at present is 2D pattern or 3D pattern by the backlight drive module.
Step S105, adjust the glow current of display according to the luminous intensity of the luminous intensity of image mode, viewing area and extraneous light.
Wherein, can obtain the luminous intensity of viewing area and the luminous intensity of extraneous light by the backlight drive module, and according to the luminous intensity of the luminous intensity of the image mode of display work at present, viewing area and extraneous light, adjust the glow current of display.
Compared with prior art, the method in compensation display backlight of the present invention source can input to display by the extraneous light gathered, according to the luminous intensity of the luminous intensity of the image mode of display work at present, extraneous light and viewing area, adjust the glow current of display, using and reach the purpose of extraneous light as the compensatory light of backlight.
Refer to Fig. 5, Fig. 5 is the schematic flow sheet that the present invention compensates method second embodiment in display backlight source.What method first embodiment in the present embodiment and above-mentioned compensation display backlight source was different is, the present embodiment also comprised step S100 before step S101, wherein,
Step S100, gather 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.
Please in conjunction with consulting Fig. 6 and Fig. 7, Fig. 6 is that the present invention compensates the schematic flow sheet that obtains the first curve luminous intensity in method second embodiment in display backlight source, and Fig. 7 is the curve chart that the present invention compensates the luminous intensity of lighting transistor under each electric current duty ratio in method second embodiment in display backlight source.
Wherein, step S103 comprises according to the step of the luminous intensity of light transmittance induction viewing area:
Step S1031, when the light transmittance irradiated when ambient light alignment viewing area is not 0, the demonstration luminous intensity of induction viewing area;
Step S1032, when for the 2D pattern and when the light transmittance of ambient light alignment viewing area irradiation is 0, the first curve luminous intensity under the current electric current duty ratio in induction viewing area;
Step S1033, when for the 3D pattern and when the light transmittance of ambient light alignment viewing area irradiation is 0, the second curve luminous intensity under the constant current duty ratio 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 duty ratio opening display;
Step S403, induction obtains the first curve luminous intensity;
Step S404, the duty ratio of the electric current of the lighting transistor of increase display;
Step S405, judge whether the electric current of the lighting transistor of display is maximum duty cycle, if maximum duty cycle, process ends, if not maximum duty cycle enters step S403, continue induction and obtain the first curve luminous intensity, until flow process finishes.
Wherein, the relation of the first curve luminous intensity and electric current duty ratio refers to Fig. 7.
In like manner, can obtain the second curve luminous intensity with similar method, what deserves to be explained is, the second curve luminous intensity is a fixed value.
Further, the present invention can also carry out the adjustment of further glow current according to the image mode of display work at present, using and maximally utilise the compensatory light of extraneous light as backlight module, reaches the beneficial effect of the power consumption that reduces backlight module.
Wherein, the step S105 glow current of adjusting display according to the luminous intensity of the luminous intensity of image mode, viewing area and extraneous light specifically comprises:
After being judged as the 2D pattern, according to the luminous intensity that shows luminous intensity, the first curve luminous intensity and extraneous light, adjust the glow current of display;
After being judged as the 3D pattern, according to the luminous intensity that shows luminous intensity, the second curve luminous intensity and extraneous light, adjust the glow current of display.
Refer to Fig. 8, Fig. 8 is image mode that the present invention compensates display work at present in method second embodiment in the display backlight source schematic flow sheet while being the 2D pattern.Wherein, when being judged as the 2D pattern, concrete steps comprise:
Step S200, the image mode of judgement display work at present is the 2D pattern;
Step S201, judge whether the luminous intensity of extraneous light is more than or equal to the first curve luminous intensity, if, enter step S205, if not, enter step S202;
Step S202, when the luminous intensity of extraneous light was less than the first curve luminous intensity, it was maximum controlling the light transmittance irradiated ambient light alignment viewing area;
Step S203, judgement shows whether luminous intensity is more than or equal to the first curve luminous intensity, if not, enters step S209, if enter step S204;
Step S204, the glow current of reduction display, enter step S201;
Step S205, close the glow current of display;
Step S206, judgement shows whether luminous intensity is more than or equal to the first curve luminous intensity, if not, enters step S208, if enter step S207;
Step S207, reduce the light transmittance that ambient light alignment viewing area is irradiated, and enters step S201;
Step S208, increase the light transmittance that ambient light alignment viewing area is irradiated, and enters step S201
Step S209, the glow current of increase display, enter step S201.
Refer to Fig. 9, Fig. 9 is image mode that the present invention compensates display work at present in method second embodiment in the display backlight source schematic flow sheet while being the 3D pattern.Wherein, when being judged as the 3D pattern, concrete steps comprise:
Step S300, the image mode of judgement display work at present is the 3D pattern;
Step S301, judge whether the luminous intensity of extraneous light is more than or equal to the second curve luminous intensity, if, enter step S305, if not, enter step S302;
Step S302, when the luminous intensity of extraneous light was less than the second curve luminous intensity, it was maximum controlling the light transmittance irradiated ambient light alignment viewing area;
Step S303, judgement shows whether luminous intensity is more than or equal to the second curve luminous intensity, if not, enters step S309, if enter step S304;
Step S304, the glow current of reduction display, enter step S301;
Step S305, close the glow current of display;
Step S306, judgement shows whether luminous intensity is more than or equal to the second curve luminous intensity, if not, enters step S308, if enter step S307;
Step S307, reduce the light transmittance that ambient light alignment viewing area is irradiated, and enters step S301;
Step S308, increase the light transmittance that ambient light alignment viewing area is irradiated, and enters step S301
Step S309, the glow current of increase display, enter step S301.
By foregoing description, can find out: the method in the compensation display backlight source of the embodiment of the present invention, when the luminous intensity of extraneous light is more than or equal to the first curve luminous intensity or the second curve luminous intensity, the light transmittance that ambient light alignment viewing area is irradiated is transferred to maximum, to maximally utilise extraneous light light source by way of compensation; When the luminous intensity of extraneous light is less than the first curve luminous intensity or the second curve luminous intensity, the glow current of display will be closed, to reach the effect of the power consumption that reduces 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 specification of the present invention and accompanying drawing content to do; or directly or indirectly be used in other relevant technical field, all in like manner be included in scope of patent protection of the present invention.
Claims (10)
1. a backlight module, comprise backlight drive module and a plurality of lighting transistor, it is characterized in that, also comprises a plurality of optical transmitting sets and a plurality of the first inductor;
Described a plurality of optical transmitting set evenly is arranged between described a plurality of lighting transistor, described optical transmitting set comprises the second inductor and liquid crystal film switch, described the second inductor is for the luminous intensity of induction to the extraneous light of described optical transmitting set input, the light transmittance that described liquid crystal film switch irradiates for the viewing area of controlling the described backlight module of ambient light alignment;
Described a plurality of the first inductor evenly is arranged between described a plurality of lighting transistor, for the luminous intensity according to described light transmittance induction viewing area;
Described backlight drive module is connected with described optical transmitting set, described the first inductor and described lighting transistor respectively, for judging the image mode of backlight module work at present, and according to the luminous intensity of described image mode, the first inductor induction and the electric current of the described lighting transistor of luminous intensity adjustment that the second inductor is responded to.
2. backlight module according to claim 1, is characterized in that,
When described the first inductor specifically is not 0 for the light transmittance of controlling when the liquid crystal film switch, the demonstration luminous intensity of induction viewing area;
When the first inductor also is 0 for the light transmittance that is judged as the 2D pattern when the backlight drive module and control when the liquid crystal film switch, the first curve luminous intensity under the current electric current duty ratio of inducing luminous transistor;
When the first inductor also is 0 for the light transmittance that is judged as the 3D pattern when the backlight drive module and control when the liquid crystal film switch, the second curve luminous intensity under inducing luminous transistor constant current duty ratio.
3. backlight module according to claim 2, is characterized in that, described backlight drive module, specifically for after being judged as the 2D pattern, is adjusted the glow current of display according to the luminous intensity that shows luminous intensity, the first curve luminous intensity and extraneous light;
After being judged as the 3D pattern, according to the luminous intensity that shows luminous intensity, the second curve luminous intensity and extraneous light, adjust the glow current of display.
4. backlight module according to claim 3, is characterized in that,
Described backlight drive module also is further used for after being judged as the 2D pattern, judges whether the luminous intensity of the second inductor induction is more than or equal to the first curve luminous intensity;
When the luminous intensity of the second inductor induction is more than or equal to the first curve luminous intensity, lighting transistor is closed, and the demonstration luminous intensity of the first inductor induction while being closed condition according to lighting transistor and the first curve luminous intensity are controlled the light transmittance of liquid crystal film switch;
When the luminous intensity of the second inductor induction is less than the first curve luminous intensity, the light transmittance of controlling the liquid crystal film switch be maximum, and the demonstration luminous intensity that the first inductor is responded to while be maximum according to the light transmittance of liquid crystal film switch and the electric current of the first curve luminous intensity adjustment lighting transistor;
The backlight drive module also is further used for after being judged as the 3D pattern, judges whether the luminous intensity of the second inductor induction is more than or equal to the second curve luminous intensity;
When the luminous intensity of the second inductor induction is more than or equal to the second curve luminous intensity, lighting transistor is closed, and the demonstration luminous intensity of the first inductor induction while being closed condition according to lighting transistor and the second curve luminous intensity are controlled the light transmittance of liquid crystal film switch;
When the luminous intensity of the second inductor induction is less than the second curve luminous intensity, the light transmittance of controlling the liquid crystal film switch be maximum, and the demonstration luminous intensity that the first inductor is responded to while be maximum according to the light transmittance of liquid crystal film switch and the electric current of the second curve luminous intensity adjustment lighting transistor.
5. according to the described backlight module of claim 1 to 4 any one, described backlight module also comprises light-conductive optic fibre and optical collector, and described light-conductive optic fibre one end is connected with described optical transmitting set, for extraneous light is inputed to described optical transmitting set; Described optical collector is connected with the described light-conductive optic fibre other end, be used to gathering extraneous light.
6. a method that compensates the 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;
Luminous intensity according to the described viewing area of described light transmittance induction;
The image mode of judgement display work at present;
According to the luminous intensity of the luminous intensity of image mode, viewing area and extraneous light, adjust the glow current of display.
7. method according to claim 6, is characterized in that, the step of described luminous intensity according to the described viewing area of light transmittance induction comprises:
The demonstration luminous intensity of viewing area when the light transmittance that induction is irradiated when ambient light alignment viewing area is not 0;
Sense should be the 2D pattern and the first curve luminous intensity under the current electric current duty ratio in viewing area when the light transmittance of ambient light alignment viewing area irradiation is 0;
Sense should be the 3D pattern and the second curve luminous intensity under the constant current duty ratio of viewing area when the light transmittance of ambient light alignment viewing area irradiation is 0.
8. method according to claim 7, is characterized in that, the step that the luminous intensity of described luminous intensity according to image mode, viewing area and extraneous light is adjusted the glow current of display comprises:
After being judged as the 2D pattern, judge whether the luminous intensity of extraneous light is more than or equal to the first curve luminous intensity;
When the luminous intensity of extraneous light is more than or equal to the first curve luminous intensity, the glow current of display is closed, and show that luminous intensity and the first curve luminous intensity control the light transmittance that ambient light alignment viewing area is irradiated while according to the glow current of display, being closed condition;
When the luminous intensity of extraneous light was less than the first curve luminous intensity, it be maximum controlling the light transmittance irradiated ambient light alignment viewing area, and the glow current of demonstration luminous intensity and the first curve luminous intensity adjustment display while be maximum according to light transmittance;
After being judged as the 3D pattern, judge whether the luminous intensity of extraneous light is more than or equal to the second curve luminous intensity;
When the luminous intensity of extraneous light is more than or equal to the second curve luminous intensity, the glow current of display is closed, and show that luminous intensity and the second curve luminous intensity control the light transmittance that ambient light alignment viewing area is irradiated while according to the glow current of display, being closed condition;
When the luminous intensity of extraneous light was less than the second curve luminous intensity, it be maximum controlling the light transmittance irradiated ambient light alignment viewing area, and the glow current of demonstration luminous intensity and the second curve luminous intensity adjustment display while be maximum according to light transmittance.
9. according to the described method of claim 6 to 8 any one, it is characterized in that, described induction comprised before the step of the luminous intensity of the extraneous light of described display input:
Gather extraneous light, and extraneous light is inputed to described display.
10. a display, is characterized in that, comprises the described backlight module of any one in claim 1-5.
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| CN201310275042.1A CN103415105B (en) | 2013-07-02 | 2013-07-02 | Method and the display in backlight module, compensation display backlight source |
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| CN104266113A (en) * | 2014-07-30 | 2015-01-07 | 友达光电股份有限公司 | Backlight module |
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| 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 |
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