CN101958109B - Method for reducing ripple phenomenon of monitor - Google Patents
Method for reducing ripple phenomenon of monitor Download PDFInfo
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- CN101958109B CN101958109B CN2010102745805A CN201010274580A CN101958109B CN 101958109 B CN101958109 B CN 101958109B CN 2010102745805 A CN2010102745805 A CN 2010102745805A CN 201010274580 A CN201010274580 A CN 201010274580A CN 101958109 B CN101958109 B CN 101958109B
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Abstract
The invention discloses a method for reducing a ripple phenomenon of a monitor. The method comprises the following steps of: (a) providing a first electric potential signal to a backlight module by an inverter; (b) rearranging the inverter; (c) providing a second electric potential signal to the backlight module by the inverter, wherein the first electric potential signal and the second electric potential signal form a phase difference of 180 degrees; (d) rearranging the inverter; and (e) repeating the steps (a) to (d). Accordingly, by changing bright and dark regions of a monitor panel, which correspond to the visual temporary stay effect of human eyes, the invention can effectively reduce the ripple phenomenon in monitor pictures.
Description
Technical field
The invention relates to a kind of method that reduces the LCD picture waviness phenomena; Particularly when sending a signal to display panel, can not change in time with the current potential of keeping backlight lamp tube at every turn, reach the effect that reduces the picture waviness phenomena with seasonal frequency converter (inverter) replacement about a kind of time schedule controller that utilizes.
Background technology
Traditionally, LCD backlight module capable of using is luminous to display panels, increases the brightness of the picture that is shown in display panels, so that institute's picture displayed can increase brightness by backlight module, and promotes display quality.
Seeing also Fig. 1, is the backlight module driving framework that shows conventional liquid crystal, is to utilize a frequency converter (inverter) 101 to provide in each fluorescent tube 111,113,115 and 117 in current potential to the backlight module 110, to start these lamp luminescence.Wherein, The current potential that said frequency converter 101 is exported is with time dependent sinusoidal wave form output; And the frequency of being exported all is consistent, like this then can cause display panels can receive signal that this frequency converter 101 transmits via backlight module 110 so cause institute's picture displayed that the phenomenon along with the ripple of time fluctuation takes place.
This be since provide to backlight module 110 (like fluorescent tube 111; 113,115 and 117) voltage is much larger than the voltage of each pixel of display panels driving, therefore; Can cause the resulting current potential of each pixel of display panels to be disturbed by the current potential of frequency converter 101 provides to backlight module 110; And then when resulting in display panels display frame, the fluorescent tube 111,113 of each pixel in can corresponding backlight module 110; 115 and 117 current potential results from y direction and appears like sine-shaped Potential distribution phenomenon, and makes picture the phenomenon of dark line can occur.Shown in Fig. 2 A, in display panels 200 dark line 210 can appear.So, the phenomenon of this dark line 210 is because to each other potential difference (PD) apart from minimum, therefore, is presented in moment during picture when this dark line 210, is not can feel out for general human eye.
But; Because the displaying principle of the display panels 200 of LCD is each pixel of supplying current potential to display panels 200 from top to bottom according to the time with time schedule controller (figure does not show); Therefore, when 200 picture displayed of first second display panels shown in Fig. 2 A, then in the time of second second; Because it is with sine wave transmissions that frequency converter 101 is supplied to the current potential of backlight module 110; Then this current potential current potential of influencing each pixel of display panels then can move down, and shown in Fig. 2 B, wherein dark 211 of lines are arranged in the below of the dark line 210 of Fig. 2 A.Though the dark line 210 (or 211) of picture can't be perceived by general human eye in moment; But, see also Fig. 2 C, when image frame is play continuously; Then can be owing to dark line 210 is transformed into dark line 211; Can present the phenomenon that this dark line constantly moves down, and this waviness phenomena will be experienced by general human eye, and have influence on the display quality of this LCD.
Therefore; The driving framework of the backlight module of No. 6417833 a kind of liquid crystal indicator of (patent name is " Liquid CrystalDisplay Apparatus and Method for Lighting Backlight thereof ") proposition of United States Patent (USP) notification number; See also configuration diagram shown in Figure 3; Wherein first frequency converter 103 is exported drive potential to fluorescent tube 1111 and fluorescent tubes 1113; And second frequency converter, 105 output drive potential to fluorescent tube 1115 and fluorescent tubes 1117; At this; The current potential that the current potential that first frequency converter 103 is exported and second frequency converter 105 are exported differs 180 degree (promptly provide respectively a positive potential high voltage in fluorescent tube 1111 and fluorescent tube 1113 and a negative potential high voltage is provided in fluorescent tube 1115 and fluorescent tube 1117), so, then can the dark line phenomenon that fluorescent tube 1113 and fluorescent tube 1115 are produced be balanced out by the compensation that this differs the phase differential of 180 degree.But, between fluorescent tube 1111 and the fluorescent tube 1113 and the dark line that is produced between fluorescent tube 1115 and the fluorescent tube 1117 still still can't utilize the framework of this liquid crystal indicator effectively to eliminate.Produce the danger that positive and negative current potential high voltage differential causes arcing more easily simultaneously between two fluorescent tubes owing to vicinity when in addition, lighting fluorescent tube.
TaiWan, China patent announcement number I240599 number (patent name " fluorescent tube module and backlight module ") then provides a kind of driving framework that improves the backlight module of above-mentioned liquid crystal indicator, utilizes different arrangement modes to reduce the adjacent chance of generating positive and negative voltage so that the chance of arcing reduces.Yet, though the driving framework of disclosed backlight module can reduce the chance of arcing in this patent,, when the current potential between two fluorescent tubes is same-phase, can produce the phenomenon of dark line again.That is to say that if the received identical phase place of current potential of the fluorescent tube of adjacent arrangement, then its dark line phenomenon will take place.
Hence one can see that, and above-mentioned prior art all can't effectively reduce the phenomenon owing to ripple in drive variable frequency display panels that device the causes institute picture displayed of backlight module.
Therefore; Need badly and a kind ofly can effectively reduce LCD, and the driving framework that need not change LCD can effectively be improved the display effect of LCD because the current potential that the frequency converter of backlight module is exported disturbs the method for waviness phenomena in the display panels institute picture displayed that causes.
Summary of the invention
A purpose of the present invention is that solution causes display panels institute picture displayed waviness phenomena to occur because the current potential that the drive variable frequency device of backlight liquid crystal display module is exported disturbs.
Another object of the present invention is supplied the arcing phenomenon that a positive potential high voltage and a negative potential high voltage are caused for solving to utilize in the prior art with seasonal frequency converter in adjacent fluorescent tube.
In order to reach above-mentioned purpose, the present invention provides a kind of method that reduces the display picture waviness phenomena, and its step comprises: (a) provide one first electric potential signal to backlight module by a frequency converter; (b) the above-mentioned frequency converter of replacement; (c) by above-mentioned frequency converter one second electric potential signal to described backlight module is provided, wherein first electric potential signal has identical phase place with second electric potential signal; And (d) repeat above-mentioned steps (b)-(c).So, because first electric potential signal and second electric potential signal have the event of same phase,, can not change along with change of time though then be shown in the distribution that the image of display panel still exists dark line.And this dark line phenomenon does not have the method identification for general human eye and comes out, and therefore, when the phenomenon of rolling along with the time when this dark line is enhanced, then can effectively reduce the phenomenon of display picture ripple downwards.
In present embodiment, above-mentioned frequency converter is coupled to time schedule controller, and by the clock signal of time schedule controller with the above-mentioned frequency converter of control replacement; In addition, time schedule controller synchronous above-mentioned frequency converter of resetting when transmitting image frame to display panel.Moreover in present embodiment, backlight module has a plurality of fluorescent tubes, and each fluorescent tube all receives by above-mentioned first electric potential signal that frequency converter provided and second electric potential signal; Wherein first electric potential signal and second electric potential signal are a sine wave signal.
Moreover the present invention also provides a kind of method that reduces the display picture waviness phenomena, and its step comprises: (a) provide one first electric potential signal to backlight module by a frequency converter; (b) the above-mentioned frequency converter of replacement; (c) by above-mentioned frequency converter one second electric potential signal to described backlight module is provided, wherein the phase place of first electric potential signal is spent with the phasic difference mutually 180 of second electric potential signal; (d) the above-mentioned frequency converter of replacement; And (e) repeat above-mentioned steps (a)-(d).Because above-mentioned step is in the picture conversion of utmost point short time, therefore, sees through conversion and can be reduced to the phenomenon of ripple in the display picture effectively by the persistence of vision effect of human eye corresponding to the bright dark areas of display panel.
Likewise, in present embodiment, above-mentioned frequency converter is coupled to time schedule controller, and by the clock signal of time schedule controller with the above-mentioned frequency converter of control replacement.Moreover in present embodiment, backlight module has a plurality of fluorescent tubes, and each fluorescent tube all receives by above-mentioned first electric potential signal that frequency converter provided and second electric potential signal; Wherein first electric potential signal is a sine wave signal, and second electric potential signal be one with last sine wave signal phasic difference 180 sine wave signal of spending mutually.
As stated, the method for reduction display picture waviness phenomena provided by the present invention can reduce because frequency converter transmits the problem that waviness phenomena appears in the picture of high-potential voltage to backlight module and then interference display panels effectively.In addition, owing to do not export simultaneously in a positive potential high voltage and a negative high-potential voltage to the two adjacent fluorescent tubes, the problem like the arcing phenomenon that is occurred in the prior art also can not take place.
These advantages are from the narration of following preferred embodiment and follow back accompanying drawing formula and aforementioned claim scope will make the reader be able to the clear the present invention of understanding.
Description of drawings
Fig. 1 is the backlight module driving framework that shows conventional liquid crystal.
Fig. 2 A-Fig. 2 C is the phenomenon that the demonstration image that conventional liquid crystal showed produces ripple.
Fig. 3 shows that prior art is in order to solve the backlight liquid crystal display module drive framework of waviness phenomena.
Fig. 4 is the process flow diagram of an embodiment that shows the method for reduction LCD waviness phenomena of the present invention.
Fig. 5 is the backlight module driving framework that shows the method for reduction LCD waviness phenomena of the present invention.
Fig. 6 A-Fig. 6 B is the synoptic diagram of embodiment that shows the method for reduction LCD waviness phenomena of the present invention.
Fig. 7 is the process flow diagram of another embodiment that shows the method for reduction LCD waviness phenomena of the present invention.
Fig. 8 A-Fig. 8 E is the synoptic diagram of another embodiment that shows the method for reduction LCD waviness phenomena of the present invention.
Embodiment
The present invention will be described in detail with preferred embodiment and viewpoint, and this type of narration is to explain structure of the present invention and program, only in order to explanation but not in order to limit claim scope of the present invention.Therefore, the preferred embodiment in instructions, the present invention also can extensively be rendered in other embodiment.
To describe details of the present invention, it comprises embodiments of the invention at present.With reference to accompanying drawing and following description, same reference numerals is used to discern similar assembly on identical or the function, and expectation is with the principal character of the graphic mode illustrative embodiment of high simplified.In addition, accompanying drawing is not described each characteristic of practical embodiments, and the schema components of being described is all relative size but not draws in proportion.
The present invention discloses a kind of method that reduces the display picture waviness phenomena; Be when sending a signal to display panel, can not change in time with the current potential of keeping backlight lamp tube at every turn, reach the effect that reduces the picture waviness phenomena with seasonal frequency converter (inverter) replacement about a kind of time schedule controller that utilizes.
Seeing also Fig. 4, is the process flow diagram of an embodiment that shows the method for reduction LCD waviness phenomena of the present invention, and the synoptic diagram that collocation Fig. 5 and Fig. 6 A-Fig. 6 B are shown is explained.
At first, seeing also step 401, is to show by frequency converter 501 first electric potential signal to backlight module 510 to be provided.Employed display is a LCD among the present invention; Because each constituent components of LCD is for having common knowledge the knowledgeable in this area; All can be easily by technique known and document gained; And each constituent components of LCD is not the important technology characteristic of institute of the present invention desire narration, therefore, will not give unnecessary details at this.In present embodiment, backlight module 510 is to be made up of a plurality of fluorescent tube 511-517, and described frequency converter 501 couples backlight module 510, and promptly said frequency converter 501 couples above-mentioned a plurality of fluorescent tube 511-517 respectively.When need drive backlight module 510, then distinctly transmit electric potential signals 550 to each fluorescent tube 511-517 by frequency converter 501.Because the electric potential signal 550 that frequency converter 501 provided is sine wave signal; And the magnitude of voltage of the fluorescent tube 511-517 that transfers to is much larger than the driving voltage of driving liquid crystal panel 201; Therefore, when starting backlight module 510, the voltage that then transfers to fluorescent tube 511-517 can be the event of sine wave signal because of its electric potential signal then; Interfere with 201 picture displayed of display panel; See also Fig. 6 A, display panel 201 is owing to disturbed by the fluorescent tube 511-517 of backlight module 510, can along with the change of time appearance potential along with sinusoidal waveform changes.Fig. 6 B then is the corresponding picture that is shown in display panel 201, because this disturbs, when display panel 201 show image pictures, then can produce concealed wire 220.Yet, it should be noted that therefore, for general human eye, this concealed wire 220 can't be discovered by general user because the potential difference (PD) distance of this interference is minimum when watching image frame.
In addition, it should be noted that in present embodiment, though backlight module 510 only uses four tubes to explain, present embodiment can use still less or more fluorescent tube in backlight module 510, and should be as limit.
Then, seeing also step 403, is to show the above-mentioned frequency converter 501 of resetting; And step 405, be to show to provide second electric potential signal to backlight module that wherein first electric potential signal has identical phase place with second electric potential signal by above-mentioned frequency converter 501.Please once more with reference to Fig. 5, said frequency converter 501 couples time schedule controller 520.In present embodiment, above-mentioned frequency converter 501 sequential control of back between the fluorescent tube 511-517 that provides by this frequency converter 501 in electric potential signal 550 to the backlight module 510 with same phase of resetting can be controlled by described time schedule controller 520.In some embodiments of the present invention; Make the replacement of frequency converter 501 and sequential that signal of video signal transfers to display panel 201 synchronous by described time schedule controller 520; Be when frequency converter 501 transmission electric potential signal 550 during to backlight module 510; Time schedule controller 520 corresponding display panels 201 each pixel transmission signal of video signal from top to bottom; And in time schedule controller 520 control will transmit the signal of video signal of next time the time, synchronous driving clock signal to frequency converter 501 with the action of controlling this frequency converter 501 and resetting after, transmit electric potential signal 550 to backlight module 510 again.So, then can let time of each fluorescent tube 511-517 in time that display panel 201 receives signal of video signal and frequency converter 501 transmission electric potential signal 550 to the backlight modules 510 for synchronous.Promptly; During each output image signal to display panel 201 of time schedule controller; Then can make frequency converter 501 reset synchronously; 550 of 501 output potential signals of frequency converter after the replacement can be kept with the electric potential signal 550 of last time output has identical phase place, is in two time intervals, and display panel 201 is presented the state like Fig. 6 A and Fig. 6 B by the waveform that backlight module disturbed when display frame.That is to say that in present embodiment, first electric potential signal is the electric potential signal with identical phase place with second electric potential signal.
At last, step 407 is repeating step 401-405, and so, then display frame 201 then can continue to appear the state like Fig. 6 A and Fig. 6 B when display frame.Therefore; Though in 201 picture displayed of display panel, still there is the phenomenon of dark line 220, this dark line 220 can't change the position along with change of time, also therefore; For the user; Can't when the image frame of watching this display to show, experience image frame and present waviness phenomena, thereby improve display quality.
Yet; Though the method for above-mentioned reduction display picture waviness phenomena can't feel the existence of dark line for general user,, do not have tangible contrast situation and occur because it is minimum to produce the potential difference (PD) of dark line; Yet; For the high user of identification capability, the existence of this dark line can't disappear, and also just may have the high user of identification capability and when showing, produces puzzlement said.
Therefore, please then consulting Fig. 7, is the process flow diagram of another embodiment that shows the method for reduction LCD waviness phenomena of the present invention, and this embodiment is the preferred embodiment among the present invention.Likewise, will arrange in pairs or groups Fig. 5 and Fig. 8 A-Fig. 8 E explains.Can solve the above-mentioned problem of watching the image frame quality that exists the user that causes few part to cause all the time owing to dark line effectively in this embodiment.
At first, seeing also step 701, is to show by frequency converter 501 first electric potential signal to backlight module 510 to be provided.Likewise, said frequency converter 501 couples above-mentioned a plurality of fluorescent tube 511-517 respectively.When need drive backlight module 510, then distinctly transmit electric potential signals 550 to each fluorescent tube 511-517 by frequency converter 501.Because the electric potential signal 550 that frequency converter 501 provided is sine wave signal; And the magnitude of voltage of the fluorescent tube 511-517 that transfers to is much larger than the driving voltage of driving liquid crystal panel 202; Therefore, when starting backlight module 510, the voltage that then transfers to fluorescent tube 511-517 can be the event of sine wave signal because of its electric potential signal then; Interfere with 202 picture displayed of display panel; See also Fig. 8 A, display panel 201 is owing to disturbed by the fluorescent tube 511-517 of backlight module 510, can along with the change of time appearance potential along with sinusoidal waveform changes.Fig. 8 B then shows because the event of interference can present dark line 221 in display panel 202; As stated; Though this dark line 221 is for general human eye and be difficult for discovering,, for the higher user of identification capability; Then can experience this dark line 221 and exist all the time, and influence the quality that it watches image frame.
In order to solve above-mentioned phenomenon, please then consult step 703, be the above-mentioned frequency converter 501 of resetting; And step 705, for by above-mentioned frequency converter 501 second electric potential signal to backlight module 510 being provided, wherein the phase place of first electric potential signal is spent with the phasic difference mutually 180 of second electric potential signal.In present embodiment, control signal of video signal through time schedule controller 520 equally and transfer to the clock signal of display panel 202 and the clock signal that synchro control frequency converter 501 is reset.At this, the phase place that second electric potential signal that this frequency converter 501 is designed to after resetting, to be provided is had and the phase place of first electric potential signal have 180 degree.So; Voltage in suffered interference in the display panel 202 then can appear shown in Fig. 8 C; Its signal waveform is a negative sinusoidal waveform; Corresponding with the sinusoidal waveform shown in Fig. 8 A, the current potential that can learn former first electric potential signal is that current potential current potential in second electric potential signal of zero time point becomes maximal value.Therefore, please then consult Fig. 8 D, can learn in the display panel 202 dark line 223 positions then can with dark line 221 position opposite among Fig. 8 B.Because; Under the situation that compole is lacked when picture shows; People's eyes have the effect of persistence of vision, and the frequency of the clock signal of the signal of video signal that display panel 202 reception time schedule controllers 520 are spread out of is 60Hz to 120Hz, therefore; After the picture shown in Fig. 8 B shows, in the extremely short time, follow the picture shown in the displayed map 8D again.For human eye, then can be owing to the effect of persistence of vision is experienced the picture shown in Fig. 8 E, the even brightness that is display panel 202 distributes.
Afterwards, step 707 is the above-mentioned frequency converter 501 of resetting; And step 709 is repeating step 701-707.In present embodiment; Behind frequency converter 501 transmission second electric potential signal to backlight modules 510, can cause display panel 202 to present the image frame shown in Fig. 8 D owing to the interference of the fluorescent tube 511-517 in the backlight module 510, afterwards; Be synchronized with the output of the clock signal of signal of video signal by time schedule controller 520; Correspondence is controlled described frequency converter 501 again and is reset, and returns step 701, makes described frequency converter 501 that first electric potential signal to backlight module 510 is provided once more.So, constantly repeating above-mentioned step 701-707 then can make the user can continue to experience the image of the uniform luminance shown in Fig. 8 E.Because the frequency of conversion is 60Hz to 120Hz, therefore; For any user's eyes, all can produce the effect of persistence of vision, that is to say; Even if having the user of high identification capability, still can not perceive the dark line 221 and 223 in blink like this, and; Because this dark line 221 and 223 is controlled at fixing position by the described frequency converter 501 of constantly resetting; Therefore, can be as as traditional display yet since dark line along with the time constantly move down so have influence on the quality that the user watches image frame.
Therefore, the method for the disclosed reduction display frame of the present invention from the above mentioned waviness phenomena then can reduce because the picture of frequency converter output potential signal to display panel that backlight module causes disturbs effectively.And, utilize eye to have the effect of persistence of vision, more can let the user experience the image frame that display panel shows effectively and continue keeping brightness uniformly.
Moreover; Because the method for the disclosed reduction display frame of the present invention waviness phenomena is not exported in a positive potential high voltage and a negative potential high voltage to the adjacent fluorescent tube as prior art simultaneously; Therefore, utilizing the method for the disclosed reduction display frame of the present invention waviness phenomena is the phenomenon that can not cause occurring between two fluorescent tubes arcing.Better is that the method for the disclosed reduction display frame of the present invention waviness phenomena need not to increase the practical structure structure of display own, therefore need not increase extra production cost.
Above-mentionedly be stated as preferred embodiment of the present invention.The art in this field is deserved to understand it in order to explanation the present invention but not in order to limit the patent right scope that the present invention was advocated.Its scope of patent protection when look aforesaid claim scope and etc. same domain and deciding.All art of being familiar with this field, in not breaking away from this patent spirit or scope, change of being done or retouching all belong to the equivalence of being accomplished under the disclosed spirit and change or design, and should be included in the above-mentioned claim scope.
Claims (7)
1. a method that reduces the display picture waviness phenomena is characterized in that, its step comprises:
(a) by a frequency converter one first electric potential signal to a backlight module is provided;
(b) this frequency converter of resetting;
(c) provide one second electric potential signal to this backlight module by this frequency converter, wherein this first electric potential signal has identical phase place with this second electric potential signal;
(d) this frequency converter of resetting; And
(e) repeat above-mentioned steps (a)-(d),
Wherein, This frequency converter is coupled to time schedule controller, and by the clock signal of this time schedule controller with this frequency converter of control replacement, this time schedule controller is synchronous this frequency converter of resetting when transmitting image frame to a display panel; Further; This time schedule controller to should display panel from top to bottom each pixel transmission signal of video signal, and in this time schedule controller control will transmit the signal of video signal of next time the time, synchronous driving clock signal to this frequency converter is reset to control this frequency converter.
2. the method for reduction display picture waviness phenomena as claimed in claim 1 is characterized in that this backlight module has a plurality of fluorescent tubes, and each these a plurality of fluorescent tube all receives this first electric potential signal and this second electric potential signal that is provided by this frequency converter.
3. the method for reduction display picture waviness phenomena as claimed in claim 1 is characterized in that, this first electric potential signal and this second electric potential signal are a sine wave signal.
4. a method that reduces the display picture waviness phenomena is characterized in that, its step comprises:
(a) by a frequency converter one first electric potential signal to a backlight module is provided;
(b) this frequency converter of resetting;
(c) provide one second electric potential signal to this backlight module by this frequency converter, wherein the phasic difference stationary phase mutually of the phase place of this first electric potential signal and this second electric potential signal;
(d) this frequency converter of resetting; And
(e) repeat above-mentioned steps (a)-(d),
Wherein, This frequency converter is coupled to time schedule controller, and by the clock signal of this time schedule controller with this frequency converter of control replacement, this time schedule controller is synchronous this frequency converter of resetting when transmitting image frame to a display panel; Further; This time schedule controller to should display panel from top to bottom each pixel transmission signal of video signal, and in this time schedule controller control will transmit the signal of video signal of next time the time, synchronous driving clock signal to this frequency converter is reset to control this frequency converter.
5. the method for reduction display picture waviness phenomena as claimed in claim 4 is characterized in that this backlight module has a plurality of fluorescent tubes, and each these a plurality of fluorescent tube all receives this first electric potential signal and this second electric potential signal that is provided by this frequency converter.
6. the method for reduction display picture waviness phenomena as claimed in claim 4 is characterized in that, this first electric potential signal is a sine wave signal.
7. the method for reduction display picture waviness phenomena as claimed in claim 4 is characterized in that, this second electric potential signal can be the sine wave signal of a phase phasic difference 180 degree.
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| CN108134929B (en) * | 2017-12-21 | 2019-12-31 | 奇点汽车研发中心有限公司 | Method for positioning and eliminating color bar defect of image |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1540608A (en) * | 2003-03-14 | 2004-10-27 | 三星电子株式会社 | Device and method of driving light source of display device |
| TWI240599B (en) * | 2004-11-22 | 2005-09-21 | Au Optronics Corp | Tube module and backlight module |
| CN101547540A (en) * | 2008-03-07 | 2009-09-30 | 凹凸电子（武汉）有限公司 | Backlight controller, method for driving light sources, and display system |
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| JPH09269474A (en) * | 1996-03-29 | 1997-10-14 | Seiko Epson Corp | Illuminator |
| CN100363807C (en) * | 2000-06-15 | 2008-01-23 | 夏普株式会社 | Method and device for controlling the illumination of a liquid crystal display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1540608A (en) * | 2003-03-14 | 2004-10-27 | 三星电子株式会社 | Device and method of driving light source of display device |
| TWI240599B (en) * | 2004-11-22 | 2005-09-21 | Au Optronics Corp | Tube module and backlight module |
| CN101547540A (en) * | 2008-03-07 | 2009-09-30 | 凹凸电子（武汉）有限公司 | Backlight controller, method for driving light sources, and display system |
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| JP特开平9-269474A 1997.10.14 |
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