CN105096881A - Display device and driving method thereof - Google Patents
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- CN105096881A CN105096881A CN201510523942.2A CN201510523942A CN105096881A CN 105096881 A CN105096881 A CN 105096881A CN 201510523942 A CN201510523942 A CN 201510523942A CN 105096881 A CN105096881 A CN 105096881A
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Abstract
The invention discloses a display device and a driving method thereof. The display device comprises a display panel, a data conversion module, multiple light sources, and a driving module. An image frame to be displayed by the display panel includes multiple sub image frames. The data conversion module is used to divide the image frame to be displayed by the display panel into multiple sub image frames and convert display signals of the multiple sub image frames into multiple brightness signals. The driving module is used to receive the multiple brightness signals and control the light emitting brightness of the light sources. According to the invention, a mode of local light emitting is adopted, and the driving module controls the light emitting brightness of the light sources so as to make the light sources differ in light emitting brightness. Compared with the prior art, there is no need to adjust the light emitting brightness of all the light sources to the maximum value, and therefore, the purpose of reducing the power consumption of the display device is achieved.
Description
Technical field
The present invention relates to display technique field, particularly relate to a kind of display device and driving method thereof.
Background technology
Display is divided into liquid crystal display (LCD) and display of organic electroluminescence according to the difference of illumination mode, wherein organic light emitting display belongs to and is being electrically excited under effect luminous from main light emission and organic luminous layer, and liquid crystal display belongs to backlight luminescence i.e. backlight under voltage or current signal effect, opens also luminescence.The backlight of liquid crystal display generally includes multiple light emitting diode.
When liquid crystal display adopts light emitting diode to carry out backlight display as backlight, normally show to enable the brightness highest zone on the image to be displayed of liquid crystal display, liquid crystal display need control each light emitting diode by larger voltage or current signal and opens and reach most high brightness, normally shows to make image to be displayed.Because backlight power consumption is the main power consumption of liquid crystal display, if therefore each diode displaying is most high brightness, then backlight overall power is very large, also there is same problem in display of organic electroluminescence.
Summary of the invention
The invention provides a kind of display device and driving method thereof, to reduce the power consumption of display device.
First aspect, the invention provides a kind of display device, comprising:
Display panel, described display panel image frame to be shown comprises multiple subimage picture;
Data conversion module, described data conversion module is used for image frame to be shown for described display panel to be divided into multiple subimage picture, and the display of multiple subimage picture is converted to multiple luminance signal;
Multiple light source and driver module, described driver module for receiving described multiple luminance signal, and for controlling the luminosity of each described light source.
Second aspect, the present invention also provides a kind of driving method of display device, and described display device comprises display panel, multiple light source, data conversion module and driver module; Wherein, described display panel image frame to be shown comprises multiple subimage picture, and described driving method comprises:
Image frame to be shown for described display panel is divided into multiple subimage picture by described data conversion module, and the display of multiple subimage picture is converted to the output of multiple luminance signal;
Described driver module receives described multiple luminance signal, and controls the luminosity of each described light source.
A kind of display device that the embodiment of the present invention provides and its driving method, by data conversion module, the image to be displayed picture of display panel is divided into multiple subimage picture, the display of multiple subimage picture is converted to multiple luminance signal by data conversion module again, driver module receives multiple luminance signal and controls the luminosity of each light source, the embodiment of the present invention is according to different subimage picture display, be converted to its luminance signal, driver module controls the luminosity of each light source according to above-mentioned luminance signal, make the luminosity possibility of Different Light different, compared with prior art, the luminosity of each light source is not needed all to be adjusted to maximum brightness, reach the object reducing display device power consumption.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, introduce doing one to the accompanying drawing used required in embodiment or description of the prior art simply below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The schematic diagram of a kind of display device that Fig. 1 provides for the embodiment of the present invention;
Fig. 2 A ~ Fig. 2 C is three kinds of arrangement modes of embodiment of the present invention neutron image picture;
The schematic diagram of another kind of display device of Fig. 3 for providing in the embodiment of the present invention;
Fig. 4 A is the structural representation of the third display device in the embodiment of the present invention;
Fig. 4 B is the structural representation of the 4th kind of display device in the embodiment of the present invention;
Fig. 5 A is the schematic diagram of a kind of backlight module in the embodiment of the present invention;
Fig. 5 B is the schematic diagram of another kind of backlight module in the embodiment of the present invention;
Fig. 6 is the pixel arrangement schematic diagram of a kind of display panel in the embodiment of the present invention;
Fig. 7 is the schematic flow sheet of the driving method of a kind of display device in the embodiment of the present invention.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, hereinafter with reference to the accompanying drawing in the embodiment of the present invention, by embodiment, technical scheme of the present invention is described clearly and completely, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
For liquid crystal display in prior art and the large problem of organic light emitting display power consumption, the embodiment of the present invention provides a kind of display device, can reach the object of the power consumption reducing display device.
The schematic diagram of a kind of display device that Fig. 1 provides for the embodiment of the present invention.As shown in Figure 1, the display device that the present embodiment provides comprises: display panel 110, data conversion module 120, multiple light source 130 and driver module 140, wherein, data conversion module 120 is electrically connected with display panel 110 and driver module 140 respectively, and driver module 140 is also electrically connected with multiple light source 130 respectively.
Display panel 110 is for showing image frame to be shown, and display panel 110 image frame to be shown comprises multiple subimage picture.Concrete, the plurality of subimage picture can be various ways in row arrangement, in row arrangement or in matrix arrangement etc. on display panel 110, and the display of multiple subimage picture can be different.Fig. 2 A ~ Fig. 2 C is three kinds of arrangement modes of embodiment of the present invention neutron image picture, wherein, multiple subimage picture is given on display panel 110 in row arrangement in Fig. 2 A, give multiple subimage picture in Fig. 2 B in row arrangement on display panel 110, give multiple subimage picture in Fig. 2 C is matrix arrangement on display panel 110.
The display of multiple subimage picture for image frame to be shown for display panel 110 is divided into multiple subimage picture, and is converted to multiple luminance signal by data conversion module 120.Data conversion module 120 is according to the display of each subimage picture, the display of subimage picture is converted to the corresponding luminance signal of this subimage picture, this luminance signal is characterized primarily by display each subimage picture above-mentioned, its at least required light levels, because the display of different subimages can not be identical, therefore the luminance signal of different subimage picture may be different, and data conversion module 120 transmits it to driver module 140 after the luminance signal being converted to multiple subimage picture.
Driver module 140 is for receiving multiple luminance signal, and for controlling the luminosity of each light source 130, then Different Light 130 presents each self-corresponding luminosity.If be black at this subimage picture, then the luminosity of the light source 130 of its correspondence is lower, and another subimage picture is white, then the luminosity of corresponding light source 130 is higher.
The technical scheme that the embodiment of the present invention provides, wherein image frame to be shown for display panel 110 is divided into multiple subimage picture, and the display of multiple subimage picture is converted to multiple luminance signal, then controlled the luminosity of each light source according to luminance signal by driver module 140, be equivalent to a kind of Region control technology, for the subimage picture needing light levels higher, the luminosity that then can control corresponding light source is also higher, for the subimage picture needing light levels lower, the luminosity that then can control corresponding light source is lower, relative in prior art, all maximum brightness is adjusted to the luminosity of all light sources, the power consumption of display device can be reduced.
The schematic diagram of another kind of display device of Fig. 3 for providing in the embodiment of the present invention, can arrange driver module 140 in the embodiment of the present invention and comprise multiple driver element 141, each driver element 141 is electrically connected with a light source 130.Relation is one to one set to by driver element 141 and light source 130, when driver module 140 receives multiple luminance signal and controls light source 130 according to luminance signal, each driver element 141 in driver module 140 controls the luminosity of corresponding light source 130 according to a corresponding luminance signal, and different driving unit 141 controls Different Light 130.With embodiment illustrated in fig. 1 similar, controlled the luminosity of corresponding light source respectively according to the luminance signal of each subimage picture by each driver element in the present embodiment, effectively can reduce power consumption, according to the light source of correspondence, multiple driver element 141 is divided into driver module 140 simultaneously, further enhancing the independence of each driver element 141, be independent of each other between each driver element 141, be more conducive to control the luminosity of each light source.
Fig. 4 A is the structural representation of the third display device in the embodiment of the present invention, as shown in Figure 4 A, this display device comprises display panel 110 and light source 130, this display device also comprises flexible PCB 150, display panel 110 is electrically connected with flexible PCB 150, wherein, at least one of data conversion module 120 and driver module 140 is arranged on flexible PCB 150.
In the embodiment shown in Fig. 4 A, be arranged on by data conversion module 120 on flexible PCB 150, be arranged on by driver module 140 on display panel 110, concrete, driver module 140 can be arranged on the non-display area of display panel 110.Data conversion module 120 obtains the image to be displayed picture of display panel 110, this image to be displayed picture is divided into multiple subimage picture, so that the display of each subimage picture is converted to luminance signal, and luminance signal is transferred to driver module 140, driver module 140 controls the luminosity of each light source 130 according to luminance signal.
Fig. 4 B is the structural representation four of a kind of display device in the embodiment of the present invention, as shown in Figure 4 B, data conversion module 120 and driver module 140 all can also be arranged on flexible PCB 150.
In the above embodiment of the present invention, for the luminosity realizing driver module 140 pairs of light sources 130 controls, light source 130 can receive driver module 140 export voltage signal or current signal to control the luminosity of light source 130.If the luminosity of multiple light source 130 is incomplete same, then the voltage signal that exports to Different Light 130 of driver module 140 or current signal also different, arrange voltage signal or current signal is larger at this, the luminosity of light source 130 is higher.For different subimage pictures, if a subimage picture is black, then it is lower to the luminosity of light source 130, and driver module 140 only needs to make this light source 130 reach lower luminosity by less voltage signal or current signal.If a subimage picture is white, then the luminosity of its corresponding light source 130 is higher, and driver module 140 needs to control this light source 130 by larger voltage signal or larger current signal makes the luminosity of this light source 130 high.
Display device in the above embodiment of the present invention can be liquid crystal display or display of organic electroluminescence, wherein display of organic electroluminescence is autoluminescence display mode, light source is wherein Organic Light Emitting Diode corresponding to each pixel of display of organic electroluminescence, controlling the luminosity of each light source in technical scheme provided by the invention, is namely control the luminosity of the above-mentioned Organic Light Emitting Diode corresponding with each pixel.
In addition, when the display device that the embodiment of the present invention relates to is liquid crystal indicator, light source applications is wherein in the backlight module of display device, and use as back light, light source now can be cold-cathode fluorescence lamp, inorganic light-emitting diode, Organic Light Emitting Diode, light emitting diode with quantum dots or without the one in mercury flat-type flourescent lamp.
Wherein, when light source 130 is cold-cathode fluorescence lamp (ColdCathodeFluorescentLamp, CCFL), CCFL has the advantages such as high power, high brightness, low energy consumption; Or light source 130 is inorganic light-emitting diode (LightEmittingDiode, LED), inorganic LED has that electric light transformation efficiency is high, operating voltage is low, heating less, brightness advantages of higher; Or light source 130 is without mercury flat-type flourescent lamp (FlatFluorescentLamp, FFL), FFL has uniformly light-emitting face, the advantage such as pollution-free; Or light source 130 is Organic Light Emitting Diode (OrganicLightEmittingDiode, OLED), OLED has that wide viewing angle, luminous transformation efficiency are high, energy consumption is lower than inorganic LED, low cost and other advantages; Or, light source 130 is light emitting diode with quantum dots (QuantumdotLightEmittingDiode, QLED), electronics is converted into photon aspect and is better than OLED by QOLED, have that efficiency is higher, manufacturing cost is lower, more energy-conservation, luminosity factor promote 30% to 40% advantage.
When the display device that the embodiment of the present invention provides is liquid crystal display, light source then wherein in backlight module can be preferably inorganic light-emitting diode, concrete, this light source can comprise red phosphor diode RLED, green phosphor diode GLED, blue phosphor diode BLED and white inorganic light emitting diode WLED, then above-mentioned driver module 140 is for controlling the luminosity of each red phosphor diode RLED, green phosphor diode GLED, blue phosphor diode BLED and white inorganic light emitting diode WLED.Or, light source comprises red phosphor diode RLED, green phosphor diode GLED, blue phosphor diode BLED and yellow inorganic light-emitting diode YLED, and driver module 140 is for controlling the luminosity of each red phosphor diode RLED, green phosphor diode GLED, blue phosphor diode BLED and yellow inorganic light-emitting diode YLED.
Concrete, comprise WLED for light source, the WLED in light source can use monochromatic inorganic light-emitting diode, and scribbles fluorescent powder on monochromatic inorganic light-emitting diode.Such as, if this monochromatic inorganic light-emitting diode is blue phosphor diode, then the fluorescent powder this monochromatic inorganic light-emitting diode is coated with is for yellow; Or if this monochromatic inorganic light-emitting diode is yellow inorganic light-emitting diode, then the fluorescent powder this monochromatic inorganic light-emitting diode is coated with is for blue; Or if this monochromatic inorganic light-emitting diode is ultraviolet light inorganic light-emitting diode, then the fluorescent powder this monochromatic inorganic light-emitting diode is coated with is RGB three wavelength fluorescent powder.
Fig. 5 A is the schematic diagram of a kind of backlight module in the embodiment of the present invention, as shown in Figure 5A, light source is arranged on the left side of backlight module, and three-color light-emitting diode 160 wherein and white inorganic light emitting diode 170 are spaced, and distinguish corresponding different backlight area H1, H2, H3 ... Hn-2, Hn-1 and Hn, altogether n is capable, and n is positive integer, the subimage picture that above-mentioned different backlight area can be different on corresponding display panel.Three-color light-emitting diode 160 wherein comprises RLED, GLED and BLED, and this three-color light-emitting diode also can be referred to as RGBLED, and in addition, in another kind of implementation, above-mentioned white light-emitting diode 170 can replace with yellow light-emitting diode.Those skilled in that art are appreciated that, in the backlight module shown in Fig. 5 A, light source is wherein arranged on a side of backlight module, each backlight area in backlight module, also a corresponding sub-image frame on a display panel, in Fig. 5 A, each backlight area is according to row arrangement, and the subimage picture namely shown in corresponding diagram 2A is according to the arrangement mode of row arrangement.
Fig. 5 B is the schematic diagram of another kind of backlight module in the embodiment of the present invention, as shown in Figure 5 B, light source is arranged on left side and the downside of backlight module, and three-color light-emitting diode 160 wherein and white inorganic light emitting diode 170 are spaced, and corresponding different respectively backlight area H11, H12 ... Hnm, altogether capable, m row of n, and m, n are positive integer, the subimage picture that this backlight area can be different on corresponding display panel.Three-color light-emitting diode 160 wherein comprises RLED, GLED and BLED, and in addition, in another kind of implementation, above-mentioned white light-emitting diode 170 can replace with yellow light-emitting diode.Those skilled in that art are appreciated that, in the backlight module shown in Fig. 5 B, light source is wherein arranged on left side and the downside of backlight module, in backlight module, each backlight area can a sub-image frame on corresponding display panel, backlight area arranges according to matrix, subimage picture on display panel also can arrange according to matrix, the arrangement mode that the subimage picture namely shown in corresponding diagram 2C arranges according to matrix.
In the embodiment shown in above-mentioned Fig. 5 A and Fig. 5 B, can according to the display of each subimage picture, obtain should the luminance signal of light emitting diode of subimage picture, and control the luminosity of each light emitting diode.
In addition, when using backlight module as fig. 5 a and fig. 5b, with the technical scheme only adopting RGBLED to use as back light, it can reduce required LED quantity, thus reduce LED lamp bar length, this technical scheme is applicable to backlight module brightness requirement higher, a fairly large number of application scenarios of required LED.
Fig. 6 is the pixel arrangement schematic diagram of a kind of display panel in the embodiment of the present invention, as shown in Figure 6, the technical scheme that the embodiment of the present invention provides, be applicable to display panel and comprise red pixel R, green pixel G, the situation of blue pixel B and white pixel W, the display according to subimage picture different on display panel that can provide in conjunction with the above embodiment of the present invention, and be converted into corresponding luminance signal, then the technical scheme of the luminosity of corresponding light source in backlight module is controlled according to this luminance signal, while reduction display device power consumption, improve color saturation, and the utilization factor of white pixel is maximized.
The embodiment of the present invention additionally provides the driving method of the display device provided for above-mentioned any embodiment, and as shown in Figure 1, display device wherein comprises display panel, multiple light source, data conversion module and driver module; Wherein, the image frame that display panel is to be shown comprises multiple subimage picture.
Fig. 7 is the schematic flow sheet of the driving method of a kind of display device in the embodiment of the present invention, and as shown in Figure 7, the driving method of this display device comprises:
Image frame to be shown for display panel is divided into multiple subimage picture by step 101, data conversion module, and the display of multiple subimage picture is converted to the output of multiple luminance signal.
Step 102, driver module receive multiple luminance signal, and control the luminosity of each light source.
On the basis of technique scheme, optionally, in step 101, driver module can comprise multiple driver element, and each driver element is all electrically connected with a light source, and controls the luminosity of the light source of electrical connection.
On the basis of technique scheme, optionally, light source receives voltage signal that driver module exports or current signal controls the luminosity of light source.
On the basis of technique scheme, optionally, multiple subimage picture arranges in row, on a display panel in arranging arrangement or arranging in matrix.
The driving method of a kind of display device that the present embodiment provides, by data conversion module, the image to be displayed picture of display panel is divided into multiple subimage picture, the display of multiple subimage picture is converted to multiple luminance signal by data conversion module again, driver module receives multiple luminance signal and controls the luminosity of each light source, the present embodiment is according to different subimage picture display, be converted to its luminance signal, controlled the luminosity of each light source according to above-mentioned luminance signal by driver module, make the luminosity possibility of Different Light different, compared with prior art, the luminosity of each light source is not needed all to be adjusted to maximum brightness, reach the object reducing display device power consumption.
Note, above are only preferred embodiment of the present invention and institute's application technology principle.Skilled person in the art will appreciate that and the invention is not restricted to specific embodiment described here, various obvious change can be carried out for a person skilled in the art, readjust and substitute and can not protection scope of the present invention be departed from.Therefore, although be described in further detail invention has been by above embodiment, the present invention is not limited only to above embodiment, when not departing from the present invention's design, can also comprise other Equivalent embodiments more, and scope of the present invention is determined by appended right.
Claims (15)
1. a display device, is characterized in that, comprising:
Display panel, described display panel image frame to be shown comprises multiple subimage picture;
Data conversion module, described data conversion module is used for image frame to be shown for described display panel to be divided into multiple subimage picture, and the display of multiple subimage picture is converted to multiple luminance signal;
Multiple light source and driver module, described driver module for receiving described multiple luminance signal, and for controlling the luminosity of each described light source.
2. display device according to claim 1, is characterized in that, described driver module comprises multiple driver element, and each described driver element is electrically connected with a described light source.
3. display device according to claim 1, it is characterized in that, described display device also comprises flexible PCB, and described display panel is electrically connected with described flexible PCB, and at least one of described data conversion module and described driver module is arranged on described flexible PCB.
4. display device according to claim 3, is characterized in that, described drive module setting on said display panel.
5. display device according to claim 1, is characterized in that, described light source receive described driver module export voltage signal or current signal to control the luminosity of described light source.
6. according to the arbitrary described display device of claim 1-5, it is characterized in that, described light source is cold-cathode fluorescence lamp, inorganic light-emitting diode, Organic Light Emitting Diode, light emitting diode with quantum dots or without the one in mercury flat-type flourescent lamp.
7. display device according to claim 6, it is characterized in that, described light source comprises red phosphor diode, green phosphor diode, blue phosphor diode and white inorganic light emitting diode, and described driver module is for controlling the luminosity of each red phosphor diode, green phosphor diode, blue phosphor diode and white inorganic light emitting diode; Or, described light source comprises red phosphor diode, green phosphor diode, blue phosphor diode and yellow inorganic light-emitting diode, and described driver module is for controlling the luminosity of each described red phosphor diode, green phosphor diode, blue phosphor diode and yellow inorganic light-emitting diode.
8. display device according to claim 7, is characterized in that, described white inorganic light emitting diode is monochromatic inorganic light-emitting diode, and described monochromatic inorganic light-emitting diode scribbles fluorescent powder;
If described monochromatic inorganic light-emitting diode is blue phosphor diode, described fluorescent powder is yellow;
Or if described monochromatic inorganic light-emitting diode is yellow inorganic light-emitting diode, described fluorescent powder is blue;
Or if described monochromatic inorganic light-emitting diode is ultraviolet light inorganic light-emitting diode, described fluorescent powder is RGB three wavelength fluorescent powder.
9. display device according to claim 1, is characterized in that, described display device is display of organic electroluminescence or liquid crystal display.
10. display device according to claim 1, is characterized in that, described multiple subimage picture arranges in row on said display panel, in arranging arrangement or arranging in matrix.
11. display device according to claim 1, is characterized in that, described display panel comprises red pixel, green pixel, blue pixel and white pixel.
The driving method of 12. 1 kinds of display device, is characterized in that, described display device comprises display panel, multiple light source, data conversion module and driver module; Wherein, described display panel image frame to be shown comprises multiple subimage picture, and described driving method comprises:
Image frame to be shown for described display panel is divided into multiple subimage picture by described data conversion module, and the display of multiple subimage picture is converted to the output of multiple luminance signal;
Described driver module receives described multiple luminance signal, and controls the luminosity of each described light source.
13. driving methods according to claim 12, is characterized in that, described driver module comprises multiple driver element, and each described driver element is all electrically connected with a described light source, and control the luminosity of the described light source of electrical connection.
14. driving methods according to claim 12, is characterized in that, described light source receive described driver module export voltage signal or current signal to control the luminosity of described light source.
15. driving methods according to claim 12, is characterized in that, described multiple subimage picture arranges in row on said display panel, in arranging arrangement or arranging in matrix.
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| CN201510523942.2A CN105096881A (en) | 2015-08-24 | 2015-08-24 | Display device and driving method thereof |
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Application publication date: 20151125 |