CN102831863A - Backlight module device, control method and television - Google Patents
Backlight module device, control method and television Download PDFInfo
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- CN102831863A CN102831863A CN2012103156474A CN201210315647A CN102831863A CN 102831863 A CN102831863 A CN 102831863A CN 2012103156474 A CN2012103156474 A CN 2012103156474A CN 201210315647 A CN201210315647 A CN 201210315647A CN 102831863 A CN102831863 A CN 102831863A
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Abstract
The invention provides a backlight module device, a control method and a television. A sectional backlight module is adopted to control the corresponding display region, in coordination with liquid crystal molecules of liquid crystal lens of shutter 3D glasses, the backlight is turn on within a stable state period, and different power supply currents are set for different region backlight modules, the high backlight current is set in a place where the high backlight luminance is required, the high backlight luminance can make up the display luminance when the liquid crystal molecules are not in the stable state region. Due to the set of different backlight power supply currents, the technical problem that the 3D liquid crystal screen has uneven display luminance is solved, and the 3D display effect is improved.
Description
Technical field
The present invention relates to the audio frequency and video technical field, particularly a kind of backlight module device and control method, TV.
Background technology
Along with the development of 3D display technique, can realize that 3D technique for displaying scheme has a lot, different according to display technique; Mainly contain spectacle 3D demonstration and bore hole formula 3D and show two big types, wherein, in the spectacle 3D display technique; Mainly contain: fast gate-type 3D display technique, polarized light 3D display technique.
Wherein, the evaluation index of fast gate-type 3D display technique comprises the cross talk resistance ability at least.In the prior art,, in this liquid crystal display, when liquid crystal is addressed to a sectional area, opens the backlight of this sectional area correspondence, and the backlight of other sectional areas closed for solving the liquid crystal display that cross-interference issue can adopt a kind of regional backlight segment control.
It is thus clear that, in this liquid crystal display, any one section corresponding display backlight; (right side) eye pattern is as the addressing backlight open on a left side; Backlight open once more when arriving as addressing to right (left side) eye pattern, to exist backlight in a period of time be place's closed condition, LCD screen is no image demonstration when backlight closing; So just reduce overlapping between a left side (right side) eye pattern picture and the right side (left side) the eye pattern picture, and then can alleviate right and left eyes picture crosstalk problem.
In the prior art, the liquid crystal display of described regional backlight segment control when backlight, be evenly to open the backlight of respective regions under the time delay interval successively, and backlight control circuit equates for each zone electric current that provides backlight in the timesharing control area.
In the prior art,, need when the liquid crystal molecule of corresponding backlight area is opened and reached steady state (SS), to open the backlight of this zone, make backlight the most effectively being utilized for the brightness that makes each backlight area reaches best effect.But also need to cooperate fast gate-type 3D glasses to use, for further reducing cross-interference issue, the right and left eyes eyeglass switch of said 3D glasses also need be opened in proper order; That is: close a left side (right side) lens after, open the right side (left side) lens again, yet; The liquid crystal lens of 3D glasses is opened into eyeglass liquid crystal molecule steady state (SS) or closes to eyeglass liquid crystal molecule buttoned-up status, needs the regular hour, such as: the every two field picture refresh time of the 3D liquid crystal display of 120Hz is 8.3ms; Be 6.5ms eyeglass liquid crystal molecule stabilization time of 3D glasses, therefore, and during the unlatching of part viewing area; The eyeglass liquid crystal molecule of 3D glasses is not in steady state (SS); That is: be in the unlatching of 3D lens liquid crystal molecule and be tending towards rising or closing in the change procedure that is tending towards descending, if in this change procedure, open the backlight of corresponding viewing area, 3D glasses rate of change will be asynchronous with the liquid crystal molecule of opening liquid crystal display to stable rate of change; To the user, will feel to have flickering.
In the prior art,, take to reach steady state (SS) in the time period, that is: be included in the interior 6.5ms of every two field picture refresh time 8.3ms in the time, open the backlight module of each viewing area at the liquid crystal molecule of 3D eyeglass for fear of above-mentioned flickering.
In the process of the application inventor's technical scheme in realizing the application embodiment, find to exist in the prior art following technical matters at least:
Because in the prior art, when being compressed in 6.5ms during the time, the liquid crystal molecule of the liquid crystal display of part viewing area does not reach steady state (SS) fully; And liquid crystal molecule is in steady state (SS) following time, and transmitance backlight is the highest, and corresponding brightness of display screen is just maximum; It all is identical adding the back facet current that provides; So, do not reach the viewing area of steady state (SS) fully for liquid crystal molecule, exist the backlight illumination that sees through can be low and cause the lower technical matters of part viewing area brightness.
Owing to there is the lower technical matters of part viewing area brightness, so cause further that there is uneven technical matters in whole 3D brightness of display screen in the prior art.
Summary of the invention
The application provides a kind of backlight module device and control method, TV, in order to solve the backlight low of seeing through of existing in the prior art and to cause the lower technical matters of part viewing area brightness.
For realizing the above purpose; The application provides a kind of module group backlight control method backlight on the one hand; Be applied in one and include in the electronic equipment of display panel of N viewing area, N is the integer more than or equal to 2, comprising: with the corresponding setting in i viewing area in i regional backlight module in N the regional backlight module and the said N viewing area; Said i regional backlight module is that i viewing area provides light source, and i is the arbitrary positive integer between N and 0; Liquid crystal molecule with said electronic equipment coupling 3D glasses liquid crystal lens reaches steady state (SS); And when display image is addressed to i viewing area; Through i switch subelement being set controls said i regional backlight module and is in out state; Wherein, subelement is set is that switch is provided with the switch that N switch that the unit comprises be provided with i the regional backlight module that is coupled to N regional backlight module in the subelement subelement is set for i switch; Control the i road supply current of i regional backlight module through i control sub unit; So that the display brightness of a said N viewing area is identical; Wherein, Have at least the corresponding supply current of two regional backlight modules inequality in said N the regional backlight module, said i control sub unit is the control sub unit that is coupled to the individual regional backlight module of i of the individual regional backlight module of N in N the control sub unit comprising of regional backlight control unit.
On the other hand, the application also provides a kind of backlight module device, is applied in one and includes in the electronic equipment of display panel of N viewing area; N is the integer more than or equal to 2, comprising: backlight module comprises N regional backlight module; Wherein, The corresponding setting in i viewing area in i in a said N the regional backlight module regional backlight module and the said N viewing area is used to said i viewing area light source is provided, and i is the arbitrary positive integer between N and 0; Switch is provided with the unit; Comprise that N switch is provided with subelement; Wherein, i switch is provided with i the regional backlight module that subelement is coupled to N regional backlight module, is used for reaching steady state (SS) at the liquid crystal molecule with said electronic equipment coupling 3D glasses liquid crystal lens; And when display image is addressed to i viewing area, controls said i regional backlight module and be in out state; And regional backlight control unit; Comprise N control sub unit, wherein, i control sub unit is coupled to i regional backlight module of N regional backlight module; Be used to control the i road supply current of i regional backlight module; So that the display brightness of a said N viewing area is identical, wherein, have at least the supply current of two regional backlight module correspondences inequality in said N the regional backlight module.
On the one hand, the application also provides a kind of TV, comprising again:
Casing; Display panel is arranged on the said casing, and said display panel includes N viewing area, and N is the integer more than or equal to 2; Backlight module device is connected with said display panel; Electric supply installation is connected with said display panel and said backlight module device; Wherein, Said backlight module device comprises: backlight module; Comprise N regional backlight module, wherein, the corresponding setting in i viewing area in i regional backlight module in said N regional backlight module and the said N viewing area; Be used to said i viewing area light source is provided, i is the arbitrary positive integer between N and 0; Switch is provided with the unit; Comprise that N switch is provided with subelement; Wherein, i switch is provided with i the regional backlight module that subelement is coupled to N regional backlight module, is used for reaching steady state (SS) at the liquid crystal molecule with said electronic equipment coupling 3D glasses liquid crystal lens; And when display image is addressed to i viewing area, controls said i regional backlight module and be in out state; And regional backlight control unit; Comprise N control sub unit, wherein, i control sub unit is coupled to i regional backlight module of N regional backlight module; Be used to control the i road supply current of i regional backlight module; So that the display brightness of a said N viewing area is identical, wherein, have at least the supply current of two regional backlight module correspondences inequality in said N the regional backlight module.
Technical scheme through among the one or more embodiment among the application embodiment can obtain following technique effect at least:
First; The application provides a kind of backlight module device, control method and TV, has adopted sectional area backlight module control corresponding display region, and the liquid crystal lens liquid crystal molecule that cooperates fast gate-type 3D glasses is in steady state (SS) in the time period; Open backlight; And for different regional backlight modules different supply currents are set, at the high backlight illumination of needs high backlight power supply electric current are set, high backlight illumination can remedy liquid crystal molecule not at the regional display brightness of steady state (SS).Therefore, different backlight power supply electric currents are set, have solved the uneven technical matters of display brightness of 3D liquid crystal display, improved the brightness uniformity index of 3D display screen, improve the 3D display effect.
Second; In the application's the technical scheme, when solving the 3D cross-interference issue for cooperation, the eyeglass that mating fast gate-type 3D glasses provides is opened sequential; That is: a left side (right side) lens is closed the back fully and is being opened right (left side) eyeglass; And the liquid crystal molecule at right (left side) eyeglass reached in stabilization time, opened the backlight module of liquid crystal display viewing area again, had solved 3D eyeglass liquid crystal molecule and had been tending towards propradation or closes in the process that is in the decline state in unlatching; Open backlightly, bring 3D eyeglass liquid crystal molecule rate of change and open the asynchronous problem that brings the human eye flickering of rate of change backlight.
Description of drawings
Following accompanying drawing only is schematic illustration of the present invention and explanation, not delimit the scope of the invention.For those of ordinary skills, under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.In the accompanying drawings:
Fig. 1 is 6 sections regional backlight control sequential charts among the application embodiment;
Fig. 2 is the frame diagram of a kind of TV among the application embodiment.
Embodiment
Technical scheme in the embodiment of the invention is carried out clear, intactly description, and obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
Technical scheme in the embodiments of the invention is for providing a kind of backlight module device, control method and TV, and general thought is following:.
The application's purpose, it is low and cause the lower technical matters of part viewing area brightness to solve the meeting backlight that sees through that exists in the prior art.
Adopt sectional area backlight module control corresponding display region; The liquid crystal lens liquid crystal molecule that cooperates fast gate-type 3D glasses is in steady state (SS) in the time period; Open backlight; And for different regional backlight modules different supply currents are set, at the high backlight illumination of needs high backlight power supply electric current are set, high backlight illumination can remedy liquid crystal molecule not at the regional display brightness of steady state (SS).Therefore, different backlight power supply electric currents are set, can solve the uneven technical matters of display brightness of 3D liquid crystal display, improve the brightness uniformity index of 3D display screen, improve the 3D display effect.
Simultaneously; In the present techniques scheme, solving the 3D cross-interference issue for cooperating, the eyeglass that mating fast gate-type 3D glasses provides is opened sequential; That is: a left side (right side) lens is closed the back fully and is being opened right (left side) eyeglass; And the liquid crystal molecule at right (left side) eyeglass reached in stabilization time, opened the backlight module of each viewing area of liquid crystal display again, had solved 3D eyeglass liquid crystal molecule and had been tending towards propradation or closes in the process that is in the decline state in unlatching; Open backlight, 3D eyeglass liquid crystal molecule rate of change with open the asynchronous problem that brings the human eye flickering of rate of change backlight.
For those skilled in the art under making the present invention more are expressly understood the present invention,, technical scheme of the present invention is described in detail through specific embodiment below in conjunction with accompanying drawing.
Embodiment one:
In the application embodiment; To divide the liquid crystal display of 6 sections identical viewing areas of area with 120Hz scanning is that example makes an explanation; The application provides a kind of backlight module device, is applied in one and includes in the electronic equipment of display panel of 6 viewing areas, and electronic equipment can be: TV, display or other display device; In this application, will differ one for example.
Backlight module device comprises:
Backlight module; Comprise 6 regional backlight modules, wherein, the corresponding setting in i viewing area in the regional backlight module of the i in said 6 regional backlight modules and said 6 viewing areas; Be used to said i viewing area light source is provided, i is arbitrary positive integer of 1 to 6;
Switch is provided with the unit; Comprise that 6 switches are provided with subelement; Wherein, i switch is provided with i the regional backlight module that subelement is coupled to 6 regional backlight modules, is used for reaching steady state (SS) at the liquid crystal molecule with said electronic equipment coupling 3D glasses liquid crystal lens; And when display image is addressed to i viewing area, controls said i regional backlight module and be in out state; And
The zone backlight control unit; Comprise 6 control sub unit, wherein, i control sub unit is coupled to i regional backlight module of 6 regional backlight modules; Be used to control the i road supply current of i regional backlight module; So that the display brightness of said 6 viewing areas is identical, wherein, have at least the supply current of two regional backlight module correspondences inequality in said 6 regional backlight modules.
In the present embodiment, the also corresponding method for controlling backlight thereof that a kind of module backlight is provided is applied in one and includes in the electronic equipment of display panel of 6 viewing areas, comprising:
With the corresponding setting in i viewing area in the regional backlight module of i in 6 regional backlight modules and said 6 viewing areas, the individual regional backlight module of said i is that i viewing area provides light source, and i is the arbitrary positive integer between 6 and 0;
Liquid crystal molecule with said electronic equipment coupling 3D glasses liquid crystal lens reaches steady state (SS); And when display image is addressed to i viewing area; Through i switch subelement being set controls said i regional backlight module and is in out state; Wherein, subelement is set is that switch is provided with the switch that 6 switches that the unit comprises are provided with i the regional backlight module that is coupled to 6 regional backlight modules in the subelement subelement is set for i switch;
Control the i road supply current of i regional backlight module through i control sub unit; So that the display brightness of said 6 viewing areas is identical; Wherein, Have at least the corresponding supply current of two regional backlight modules inequality in said 6 regional backlight modules, said i control sub unit is the control sub unit that is coupled to the individual regional backlight module of i of 6 regional backlight modules in 6 control sub unit comprising of regional backlight control unit.
In the present embodiment; As shown in Figure 1; Adopt the 120Hz 3D liquid crystal display of a kind of 6 segmentations zone backlight control, that is: 6 sections zones comprise: first area, second area, the 3rd zone, the 4th zone, the 5th zone and the 6th zone, and a represents the liquid crystal molecule stabilization process of display panel in the respective regions; B represents the liquid crystal molecule stabilization process of display panel in the respective regions, and the backlight control sequential is represented the backlight open sequential of respective regions.
Wherein, show that a frame left side (right side) eye pattern is 8.3ms as refresh time, wherein, screen ginseng V
Total=1125, effectively the viewing area is 1080 row, a two field picture liquid crystal addressing time t=8.3*1080/1125=7.968ms; Show like Fig. 1; The time that cooperates fast gate-type 3D glasses to open the eyeglass of respective left (right side) eye also is 8.3ms, yet the eyeglass liquid crystal molecule is opened and risen and liquid crystal molecule is closed certain response time of decline process need; As: existing 3D glasses need 1.8ms usually; Like this, be 6.5ms liquid crystal molecule stabilization time of 3D eyeglass, moreover; Because the addressing of the 2nd, the 3rd, the 4th, the 5th viewing area in the middle of the liquid crystal display of 6 segmentations zones backlight control needs T.T. to be about 5.33ms, and corresponding the 6th regional 3D eyeglass liquid crystal molecule is merely 1.16ms stabilization time in first area, top and bottom.
So; Backlight for guaranteeing when 3D eyeglass liquid crystal molecule is stablized, to open the zone; Just need to open the first area and the 6th regional need backlight are compressed in 1.16ms in the time, otherwise, if at needs during with the first area backlight open; This intra-zone branch liquid crystal molecule of display panel is spent stationary phase, and the brightness that sees through liquid crystal molecule then backlight just has greater loss; If during with the 6th regional backlight open, this intra-zone of display panel divides the liquid crystal molecule then also not reach stationary phase at needs, the brightness that sees through liquid crystal molecule then backlight also has greater loss; But it is relative; Second area, the 3rd zone, the 4th zone, the 5th zone, during backlight open, the liquid crystal molecule of display panel respective regions is owing to be in stationary phase; So the brightness that sees through this zone liquid crystal molecule backlight is best.
In the technical scheme of the application embodiment; For the backlight illumination that remedies first area and the 6th zone sees through few than other zones; Through the 1st and the 6 road feed circuit of first and the 6th regional backlight module of the 1st and the 6th control sub unit control, make the 1st and the 6 road supply current greater than the 2nd, 3,4 and 5 tunnel power supply streams, so just can guarantee that the display brightness in first to six zone is identical; Wherein, the 2nd, 3,4 and 5 tunnel power supply streams can be identical.
Further, said 6 viewing areas are specially rectangular zone or are trapezoidal zone.
The described control method that provides on the other hand specifically is divided into said 6 viewing areas in rectangular zone or is trapezoidal zone.
Further, the quantity N of said viewing area also can be odd number, like 7 viewing areas, 9 viewing areas or the like.
On the other hand, when the quantity N in the viewing area was odd number, a kind of control method that provides among the application embodiment just can specifically be divided the odd number viewing area with the quantity of said viewing area.
In the present embodiment, when the viewing area is divided into odd number, the zone line of display panel will be divided in a viewing area; Because; Near the problem that the dark space is arranged the separatrix that favourable like this solution area dividing is brought, especially in the large screen display device, user relatively; Sight line mainly concentrates on the screen middle part, and this division just can effectively improve the image quality of zone line.
Further, said switch is provided with the unit, specifically also comprises:
Delay control circuit is provided with subelement with said 6 switches respectively and is connected, and is used for when the liquid crystal molecule with said electronic equipment coupling 3D glasses liquid crystal lens reaches steady state (SS), and i switch of time-delay control is provided with subelement, and delay time is Δ Ti;
Said switch is provided with the unit and also is used for when display image is addressed to i viewing area, controls said i regional backlight module and is in out state.
On the other hand, present embodiment also provides a kind of control method, comprising:
When the liquid crystal molecule with said electronic equipment coupling 3D glasses liquid crystal lens reached steady state (SS), i switch of time-delay control was provided with subelement, and delay time is Δ Ti;
When display image is addressed to i viewing area, controls said i regional backlight module and be in out state.
In the present embodiment, with reference to figure 1, delay control circuit, the 1st, 2,3,4,5 and 6 switch of time-delay control is provided with subelement, and delay time is respectively Δ T1, Δ T2, Δ T3, Δ T4, Δ T5 and Δ T6.These 6 delay times are exactly the time that is opened into this zone backlight open from the first row liquid crystal molecule of respective regions.
Further, said delay control circuit specifically also is used for: said 6 regional backlight module correspondences are provided with said delay control circuit, and corresponding generation of said delay control circuit has 6 delay time Δ Ti; Wherein, have at least two Δ Ti unequal among said 6 delay time Δ Ti, and the corresponding zone of unequal at least two Δ Ti and supply current backlight module zone inequality is corresponding one by one.
Further, the method among the application embodiment also comprises:
Said 6 regional backlight module correspondences are provided with said delay control circuit, 6 delay time Δ Ti of the corresponding generation of said delay control circuit;
Wherein, have at least two Δ Ti unequal among said 6 delay time Δ Ti, and the corresponding zone of unequal at least two Δ Ti and supply current backlight module zone inequality is corresponding one by one.
Please continue with reference to figure 1, in said Δ T1, Δ T2, Δ T3, Δ T4, Δ T5 and Δ T6, wherein, Δ T2, Δ T3, Δ T4 and Δ T5 equate that all Δ T1 is maximum, and Δ T6 is minimum.Unequal Δ T1 and Δ T6 with first area and the 6th regional unequal supply current, are one to one.
In the present embodiment, also can select other regional segmented modes, region area can equate; Also can be unequal; As: top and low side region area are little, can reduce the uneven brightness region area like this, reduce the control area of different back facet currents; Be prone to be beneficial to further raising brightness uniformity, and the control area provides for a short time LED few relatively.Wherein, during the corresponding LED that big electric current or little Current Control be provided, the excessive reliability that causes of the power of LED reduces; And heat dissipation capacity is too high to the partial face plate temperature greatly, influences local panel liquid crystal deflecting element characteristic, causes problems such as local light leak; Therefore; Reduce the control area area of different back facet currents, reduced the usage quantity that adopts relatively large or little Current Control LED, improved the LED reliability and reduced the too high risk of local temperature.
On the other hand, also can select the regional segmentation method of varying number, as: 5 sections regional backlight control; Can be 7 sections zones; Can also be 8 sections zones, the technician in present technique field can derive the zone that needs to improve the backlight power supply circuit through the above-mentioned derivation mode of simple foundation.
Embodiment two:
To divide the liquid crystal display of 7 sections identical viewing areas of area with 120Hz scanning below is that example makes an explanation, and as shown in Figure 2, the application provides a kind of television equipment, comprising:
Casing;
Wherein, said backlight module device 3 comprises:
Switch is provided with unit 302; Comprise that 7 switches are provided with subelement; Wherein, i switch is provided with i the regional backlight module that subelement is coupled to 7 regional backlight modules, is used for reaching steady state (SS) at the liquid crystal molecule with said electronic equipment coupling 3D glasses liquid crystal lens; And when display image is addressed to i viewing area, controls said i regional backlight module and be in out state; And
Zone backlight control unit 303; Comprise 7 control sub unit, wherein, i control sub unit is coupled to i regional backlight module of 7 regional backlight modules; Be used to control the i road supply current of i regional backlight module; So that the display brightness of said 7 viewing areas is identical, wherein, have at least the supply current of two regional backlight module correspondences inequality in said 7 regional backlight modules.
In the present embodiment; Liquid crystal is divided into first area, second area, the 3rd zone, the 4th zone, the 5th zone, the 6th zone and the SECTOR-SEVEN territory that area equates, corresponding each area image addressing time is t1, t2, t3, t4, t5, t6 and t7, wherein; When showing 3D rendering; Show that a frame left side (right side) eye pattern is 8.3ms as refresh time, wherein, screen ginseng V
Total=1125, effectively the viewing area is 1080 row, a two field picture liquid crystal addressing time t=8.3*1080/1125=7.968ms; The time that cooperates fast gate-type 3D glasses to open the eyeglass of respective left (right side) eye also is 8.3ms, yet eyeglass liquid crystal molecule unlatching rising and liquid crystal molecule are closed certain response time of decline process need, as: existing 3D glasses need 1.8ms usually; Like this; Be 6.5ms liquid crystal molecule stabilization time of 3D eyeglass, moreover, because the addressing of the 2nd, the 3rd, the 4th, the 5th and the 6th viewing area in the middle of the liquid crystal display of 7 segmentations zone backlight control needs T.T. to be about 5.69ms; Like this; Corresponding 3D eyeglass liquid crystal molecule in first area, top and SECTOR-SEVEN territory, bottom is merely 0.81ms stabilization time, and is like this, backlight for guaranteeing when 3D eyeglass liquid crystal molecule is stablized, to open the zone; Just need be when opening first area and SECTOR-SEVEN territory backlight, with Time Compression in 0.81ms.
If during backlight open, display panel 2 these intra-zones branch liquid crystal molecules are spent stationary phase in the need first area, the brightness that sees through liquid crystal molecule then backlight just has greater loss; In like manner, if in need SECTOR-SEVEN territory during backlight open, this intra-zone of display panel divides the liquid crystal molecule then also not reach stationary phase; The brightness that sees through liquid crystal molecule then backlight also has greater loss, and is relative, owing to second area, the 3rd zone, the 4th zone, the 5th zone, the 6th zone; During backlight open; The liquid crystal molecule of display panel respective regions is owing to being in stationary phase, so the brightness that sees through this zone liquid crystal molecule backlight is best.
In the method for the application embodiment; For the backlight illumination that remedies first area and SECTOR-SEVEN territory sees through few than other zones; Control the 1st and 7 road feed circuit of the 1st and 7 regional backlight module through the 1st and 7 control sub unit, make the 1st and 7 road supply currents, can guarantee that like this display brightness in the 1st to 7 zone is identical greater than the 2nd, 3,4,5 and 6 tunnel power supply streams; Wherein, the 2nd, 3,4,5 and 6 tunnel power supply streams can be identical.
Further, said 7 viewing areas are specially rectangular zone or are trapezoidal zone.
In the present embodiment, 7 rectangular zones or be the viewing area of trapezoid area can area equate, also can be that area is unequal.
Further, said switch is provided with unit 302, specifically also comprises:
Delay control circuit 3021 is provided with subelement with said 7 switches respectively and is connected, and is used for when the liquid crystal molecule with said electronic equipment coupling 3D glasses liquid crystal lens reaches steady state (SS), and i switch of time-delay control is provided with subelement, and delay time is Δ Ti;
Also be used for when display image is addressed to i viewing area, control said i regional backlight module and be in out state.
Further, said delay control circuit 3021 also is used for:
Correspondence is provided with said delay control circuit in said 7 regional backlight modules, and corresponding generation of said delay control circuit has 7 delay time Δ Ti,
Wherein, have at least two Δ Ti unequal among said 7 delay time Δ Ti, and the corresponding zone of unequal said at least two Δ Ti and supply current backlight module zone inequality is corresponding one by one.
Technical scheme through among the one or more embodiment among the application embodiment can obtain following technique effect at least:
First; The application provides a kind of backlight module device, control method and TV, has adopted sectional area backlight module control corresponding display region, and the liquid crystal lens liquid crystal molecule that cooperates fast gate-type 3D glasses is in steady state (SS) in the time period; Open backlight; And for different regional backlight modules different supply currents are set, at the high backlight illumination of needs high backlight power supply electric current are set, high backlight illumination can remedy liquid crystal molecule not at the regional display brightness of steady state (SS).Therefore, different backlight power supply electric currents are set, have solved the uneven technical matters of display brightness of 3D liquid crystal display, improved the brightness uniformity index of 3D display screen, improve the 3D display effect.
Second; In the application's the technical scheme, when solving the 3D cross-interference issue for cooperation, the eyeglass that mating fast gate-type 3D glasses provides is opened sequential; That is: a left side (right side) lens is closed the back fully and is being opened right (left side) eyeglass; And the liquid crystal molecule at right (left side) eyeglass reached in stabilization time, opened the backlight module of liquid crystal display viewing area again, had solved 3D eyeglass liquid crystal molecule and had been tending towards propradation or closes in the process that is in the decline state in unlatching; Open backlightly, bring 3D eyeglass liquid crystal molecule rate of change and open the asynchronous problem that brings the human eye flickering of rate of change backlight.
The above only is embodiments of the invention, is not the present invention is done any pro forma restriction; Though the present invention discloses as above with embodiment; Yet be not in order to limiting the present invention, anyly be familiar with the professional and technical personnel, in not breaking away from technical scheme scope of the present invention; When the technology contents of above-mentioned announcement capable of using is made a little change or is modified to the equivalent embodiment of equivalent variations; In every case be not break away from technical scheme content of the present invention, to any simple modification, equivalent variations and modification that above embodiment did, all still belong in the scope of technical scheme of the present invention according to technical spirit of the present invention.
Claims (15)
1. backlight module device is applied in one and includes in the electronic equipment of display panel of N viewing area, and N is the integer more than or equal to 2, it is characterized in that, comprising:
Backlight module; Comprise N regional backlight module, wherein, the corresponding setting in i viewing area in i regional backlight module in said N regional backlight module and the said N viewing area; Be used to said i viewing area light source is provided, i is the arbitrary positive integer between N and 0;
Switch is provided with the unit; Comprise that N switch is provided with subelement; Wherein, i switch is provided with i the regional backlight module that subelement is coupled to N regional backlight module, is used for reaching steady state (SS) at the liquid crystal molecule with said electronic equipment coupling 3D glasses liquid crystal lens; And when display image is addressed to i viewing area, controls said i regional backlight module and be in out state; And
The zone backlight control unit; Comprise N control sub unit, wherein, i control sub unit is coupled to i regional backlight module of N regional backlight module; Be used to control the i road supply current of i regional backlight module; So that the display brightness of a said N viewing area is identical, wherein, have at least the supply current of two regional backlight module correspondences inequality in said N the regional backlight module.
2. device according to claim 1 is characterized in that, said viewing area is specially rectangular zone or is trapezoidal zone.
3. device according to claim 2 is characterized in that the quantity N of said viewing area specifically can be odd number.
4. according to claim 1 or 2 or 3 described devices, it is characterized in that said switch is provided with the unit, specifically also comprises:
Delay control circuit is provided with subelement with a said N switch respectively and is connected, and is used for when the liquid crystal molecule with said electronic equipment coupling 3D glasses liquid crystal lens reaches steady state (SS), and i switch of time-delay control is provided with subelement, and delay time is Δ Ti;
Also be used for when display image is addressed to i viewing area, control said i regional backlight module and be in out state.
5. device according to claim 4 is characterized in that, said delay control circuit specifically also is used for:
Said N regional backlight module correspondence is provided with said delay control circuit, and corresponding generation of said delay control circuit has N delay time Δ Ti,
Wherein, have at least two said Δ Ti unequal among said N the delay time Δ Ti, and unequal said at least two said Δ Ti corresponding regions and supply current backlight module zone inequality is corresponding one by one.
6. module group backlight control method backlight is applied in one and includes in the electronic equipment of display panel of N viewing area, and N is the integer more than or equal to 2, it is characterized in that, comprising:
With the corresponding setting in i viewing area in i regional backlight module in N the regional backlight module and the said N viewing area, the individual regional backlight module of said i is that i viewing area provides light source, and i is the arbitrary positive integer between N and 0;
Liquid crystal molecule with said electronic equipment coupling 3D glasses liquid crystal lens reaches steady state (SS); And when display image is addressed to i viewing area; Through i switch subelement being set controls said i regional backlight module and is in out state; Wherein, subelement is set is that switch is provided with the switch that N switch that the unit comprises be provided with i the regional backlight module that is coupled to N regional backlight module in the subelement subelement is set for i switch;
Control the i road supply current of i regional backlight module through i control sub unit; So that the display brightness of a said N viewing area is identical; Wherein, Have at least the corresponding supply current of two regional backlight modules inequality in said N the regional backlight module, said i control sub unit is the control sub unit that is coupled to the individual regional backlight module of i of the individual regional backlight module of N in N the control sub unit comprising of regional backlight control unit.
7. method according to claim 6 is characterized in that, the division of said viewing area is specially rectangular zone or is trapezoidal zone.
8. method according to claim 7 is characterized in that the division numbers N of said viewing area specifically can be odd number.
9. according to claim 6 or 7 or 8 described methods; It is characterized in that; Said step reaches steady state (SS) at the liquid crystal molecule with said electronic equipment coupling 3D glasses liquid crystal lens; And when display image is addressed to i viewing area, through i switch subelement is set and controls said i regional backlight module and be in out state, specifically also comprise:
When the liquid crystal molecule with said electronic equipment coupling 3D glasses liquid crystal lens reaches steady state (SS); I switch of time-delay control is provided with subelement; Delay time is Δ Ti, when display image is addressed to i viewing area, controls said i regional backlight module and is in out state.
10. method according to claim 9 is characterized in that said time-delay is controlled i switch subelement is set; Delay time is Δ Ti; When display image is addressed to i viewing area, control said i regional backlight module and be in out state, specifically also comprise:
Said N regional backlight module correspondence is provided with said delay control circuit, N delay time Δ Ti of the corresponding generation of said delay control circuit,
Wherein, have at least two said Δ Ti unequal among said N the delay time Δ Ti, and unequal said at least two said Δ Ti corresponding regions and supply current backlight module zone inequality is corresponding one by one.
11. a TV is characterized in that, comprising:
Casing;
Display panel is arranged on the said casing, and said display panel includes N viewing area, and N is the integer more than or equal to 2,
Backlight module device is connected with said display panel;
Electric supply installation is connected with said display panel and said backlight module device;
Wherein, said backlight module device comprises:
Backlight module; Comprise N regional backlight module, wherein, the corresponding setting in i viewing area in i regional backlight module in said N regional backlight module and the said N viewing area; Be used to said i viewing area light source is provided, i is the arbitrary positive integer between N and 0;
Switch is provided with the unit; Comprise that N switch is provided with subelement; Wherein, i switch is provided with i the regional backlight module that subelement is coupled to N regional backlight module, is used for reaching steady state (SS) at the liquid crystal molecule with said electronic equipment coupling 3D glasses liquid crystal lens; And when display image is addressed to i viewing area, controls said i regional backlight module and be in out state; And
The zone backlight control unit; Comprise N control sub unit, wherein, i control sub unit is coupled to i regional backlight module of N regional backlight module; Be used to control the i road supply current of i regional backlight module; So that the display brightness of a said N viewing area is identical, wherein, have at least the supply current of two regional backlight module correspondences inequality in said N the regional backlight module.
12. TV according to claim 11 is characterized in that, said backlight module device specifically also comprises:
The zone that the said viewing area that said backlight module device comprises is rectangular or be trapezoidal zone.
13. TV according to claim 12 is characterized in that, said backlight module device specifically also comprises:
The quantity N of said viewing area can be odd number.
14., it is characterized in that said switch is provided with the unit, specifically also comprises according to claim 11 or 12 or 13 described TVs:
Delay control circuit is provided with subelement with a said N switch respectively and is connected, and is used for when the liquid crystal molecule with said electronic equipment coupling 3D glasses liquid crystal lens reaches steady state (SS), and i switch of time-delay control is provided with subelement, and delay time is Δ Ti;
Also be used for when display image is addressed to i viewing area, control said i regional backlight module and be in out state.
15. TV according to claim 14 is characterized in that, said delay control circuit also is used for:
Said N regional backlight module correspondence is provided with said delay control circuit, N delay time Δ Ti of the corresponding generation of said delay control circuit,
Wherein, have at least two said Δ Ti unequal among said N the delay time Δ Ti, and unequal said at least two said Δ Ti corresponding regions and supply current backlight module zone inequality is corresponding one by one.
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| CN201210315647.4A CN102831863B (en) | 2012-08-30 | 2012-08-30 | Backlight module device, control method and television |
| CN201510153921.6A CN104715727B (en) | 2012-08-30 | 2012-08-30 | A kind of backlight module device and control method, TV |
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Address after: 266555 Qingdao economic and Technological Development Zone, Shandong, Hong Kong Road, No. 218 Patentee after: Hisense Visual Technology Co., Ltd. Address before: 266555 Qingdao economic and Technological Development Zone, Shandong, Hong Kong Road, No. 218 Patentee before: QINGDAO HISENSE ELECTRONICS Co.,Ltd. |