CN1432173A - Low power LCD driving scheme - Google Patents
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- CN1432173A CN1432173A CN01810271A CN01810271A CN1432173A CN 1432173 A CN1432173 A CN 1432173A CN 01810271 A CN01810271 A CN 01810271A CN 01810271 A CN01810271 A CN 01810271A CN 1432173 A CN1432173 A CN 1432173A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/2092—Details of a display terminals using a flat panel, the details relating to the control arrangement of the display terminal and to the interfaces thereto
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3622—Control of matrices with row and column drivers using a passive matrix
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0202—Addressing of scan or signal lines
- G09G2310/0213—Addressing of scan or signal lines controlling the sequence of the scanning lines with respect to the patterns to be displayed, e.g. to save power
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0264—Details of driving circuits
- G09G2310/0267—Details of drivers for scan electrodes, other than drivers for liquid crystal, plasma or OLED displays
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/02—Details of power systems and of start or stop of display operation
- G09G2330/021—Power management, e.g. power saving
- G09G2330/023—Power management, e.g. power saving using energy recovery or conservation
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2360/00—Aspects of the architecture of display systems
- G09G2360/18—Use of a frame buffer in a display terminal, inclusive of the display panel
Abstract
A method of driving passive liquid crystal displays at power levels lower than conventional driving schemes is described. A modified amplitude selection scheme is used, in which a plurality of row scan sequences are used to determining display operating states that display the same information with a lower power requirement. Row scan sequences are used to scan the display by cycling through a plurality of sequences, and one of the sequences that result in reduced power consumption is chosen. The invention describes methods and apparatus for scanning, cycling and triggering scanning displays to find low power states. Other embodiments include fixed, nonsequential row scan sequences. This invention has the further advantage of being compatible with and extending the usefulness of conventional passive liquid crystal display units.
Description
Technical field
The present invention relates generally to the method for display message on liquid crystal display.The invention still further relates to a kind of method of selecting scanning sequency with the power requirement that reduces passive liquid crystal display adaptively.
Background technology
LCD is used on plurality of devices, for example cellular telephone, pager and personal digital assistant device.Because these displays use in the equipment of portable, battery powered mostly, low-power consumption is a very important video attribute.The multiple systems of prior art, LCD display for example comprises by its overlay region constituting the column electrode of pixel and row electrode to monitor power supply.According to a kind of technology in the multiple technologies with information translation to display embark on journey addressing and column data signal.By providing appropriate signal to show electrode, these technical works are in the physical restriction and standard of LCD material.
Normally used in passive LCD display is multiplexing technique, it based on the light property response of display in principle average or the R.M.S signal.The common realization of this technology, for example the Alto-Pleshko technology uses the row signal to come the row of selective reception information, uses column signal to be shown the data-signal of information as carrying.The modification of this technology has been developed uses the AC driving display with the damage of restriction direct current to liquid crystal, and the voltage that is applied is remained in a certain scope.The example of this display technique modification is improved Alt and Pleshko technology (IAPT).Except the IAPT method that control shows, also have many other generation technique for displaying, for example be used for generating the frame rate modulation (FRM) of grey levels and scanning the multi-line addressing (MLA) of multirow simultaneously by a plurality of reading scans.Particularly, prior art is made as certain with scanning limit(s) pattern is set, and this is not necessary to the multiple transmission method that another side is lined by line scan on one side from display.
A purpose of LCD display research and development for a long time is to reduce power consumption, for example allows to prolong the service time of battery in the portable set.Have in the method for attempting being used for reducing power requirement: research is used new crystal, is used in combination the display driver algorithm of more advanced electronic technology and exploitation computation-intensive, for example MLA technology in display.The present invention introduces a kind of new low power LCD panel addressing scheme, and it uses simple driving method, and compatible existing liquid crystal material and LCD manufacturing technology.
Summary of the invention
The objective of the invention is to reduce the power requirement that drives LCD display by the method and apparatus that a kind of type scanner is provided.The display Driving technique of prior art is come type scanner with fixing progressive scanning mode, does not utilize other possible scan pattern that may reduce power requirement.By changing scanning sequency to reduce power requirement, the present invention compares with the existing scanning technique of use can reduce power requirement better.
In one embodiment, display responds the input data by selecting or calculating the scanning sequency with lower-wattage requirement.In another embodiment, scanning sequency is fixed as a discrete order so that lower general power requirement to be provided.In another embodiment, the display logic circuit uses a plurality of scanning sequency driving displays, measures the indication of display power, and selects an optimal sequence, uses this optimal sequence driving display.Other embodiment comprise according to the variation in measured variable power, the measured display unit or at a fixed time at interval or other indicate the trigger scope logical circuit so that the display logic circuit is constantly sought a lower power requirement.
Therefore, the present invention allows to provide in the prior art the scanning sequency of usefulness not to reduce the power requirement of display.This allow by add some circuit or component programming reduce power and with current LCD compatibility.
An advantage of the invention is provides a kind of new method and apparatus that uses simultaneously with LCD, works the longer time on given energy so that can make up display.
Another advantage of the present invention provides a kind of new method and apparatus, and being used for provides the line scanning order to reduce the display power requirement in conjunction with multiplex techniques.
Another advantage of the present invention provides a kind of new method and apparatus, revises the line scanning order adaptively to reduce the demonstration power requirement of LCD display.
Another advantage of the present invention provides the compatible mutually new method and apparatus of a kind of with current LCD.
An advantage of the invention is provides a kind of new method and apparatus, is provided at the line scanning order of type scanner when skipping delegation or multirow pixel.
An advantage of the invention is provides a kind of new method and apparatus, is used to provide the fine scanning that drives display order.
Another advantage of the present invention provides a kind of new method and apparatus, is used for according to showing that input selection line scanning order is to drive a display.
An advantage of the invention is the new method and apparatus that provides a kind of, be used for controlling the demonstration power of display by the indicatrix of measuring expression driving display power demand.
Another advantage of the present invention provides a kind of new method and apparatus simple, with low cost and easy to use of making.
Other purpose of the present invention, advantage and new feature are partly set forth in the following description, and for a person skilled in the art, by reading this description, perhaps by implementing the present invention, these purposes, advantage and new feature will be conspicuous.Objects and advantages of the present invention can be understood and know by the device specifically noted in claims and combination.
Can obtain more deep understanding according to going through of following specific embodiment to the present invention.For clear, this discussion relates to equipment, method and notion with the form of object lesson.Yet, can be with more kinds of operations of equipment method of the present invention.And those skilled in the art knows that logic circuitry can comprise various hardware and programmable component and different functions by modular form.The different embodiment of a system can comprise the various combination of unit and function, and various function combinations can be become various assembly of elements.
For clear, the present invention is described with the form of the system of the combination of components that comprises various different innovation assemblies and innovation.The present invention should be limited to and be included in the combination of all listed innovation assemblies in each illustrative examples in this instructions.
All publications, patent and the patented claim of being quoted examined for all purposes are incorporated by reference in this text at this.
Description of drawings
Fig. 1 is the top view of prior art LCD, and the geometry of definition pixel also comprises the synoptic diagram of some prior art display driver circuits.
Fig. 2 diagram is used to drive the prior art waveform of passive liquid crystal display.
Fig. 3 illustrates display driver waveform of the present invention.
Fig. 4 is the block scheme of display driver hardware, illustrates indicatrix measuring technique of the present invention.
Fig. 5 is the hardware circuit block scheme of first embodiment of the invention, shows that wherein input is used to determine best line scanning order.
Fig. 6 is the process flow diagram of first embodiment of the invention, shows that wherein input is used to determine best line scanning order.
Fig. 7 is the process flow diagram of second embodiment of the invention, wherein determines the line scanning order before generating image.
Fig. 8 is the hardware circuit figure of combination second embodiment of the invention and the block scheme of process flow diagram, wherein determines the line scanning order before generating image.
Fig. 9 is the hardware circuit figure of combination third embodiment of the invention and the block scheme of process flow diagram, and wherein the selection of line scanning order triggers the one-period counter.
Figure 10 is the hardware circuit figure of combination fourth embodiment of the invention and the block scheme of process flow diagram, wherein by showing that input triggers the selection of line scanning order.
Figure 11 is the hardware circuit figure of combination fifth embodiment of the invention and the block scheme of process flow diagram, wherein by the selection in proper order of the change triggers line scanning in the indicatrix.
Use reference number to be illustrated in assembly or feature that picture in picture shows in the accompanying drawings, the some of them reference number is common to several figure and represents wherein illustrated same components or feature.Any reference number that uses in this employed reference number and the content that is introduced into as a reference is different.
Embodiment
The invention provides a kind of driving and provide improving one's methods of drive signal and equipment to LCD.Display technique involved in the present invention includes but are not limited to Passive LC D, active LCD, electroluminescence and plasma display.Use method and apparatus of the present invention, can reduce the display power requirement better than prior art.Power requirement can be possible lowest power requirement, and perhaps compromise as to other design factor can dispose the present invention and come display message with the power requirement that significantly is lower than prior art systems, although must be with absolute minimum power.
Be used to make display to generate the driving circuit of image because the present invention relates to, discuss the present invention more novel aspect promptly particularly driving display with the circuit and method that reduce its power consumption before, physical circuit figure and power requirement that display is discussed are very useful.
The LCD wiring diagram
Fig. 1 illustrates the routine techniques physical routing figure of passive liquid crystal display, and usually represents type of display involved in the present invention, particularly illustrates the response to input signal of physical routing figure and display.Though the discussion of Fig. 1 relates to existing display technology, can not be used to limit the scope of the invention, the structure of prior art LCD related to the present invention and the description of operation are provided.Fig. 1 is LCD 101 and the top view that comprises the display control circuit of row driver 103 and line driver 105.Display 101 comprises one group of M row electrode 111 and one group of N the column electrode 109 that is positioned on the display thickness opposite side.Column electrode 109 display one side to the opposite side from 1 to N serial number, row electrode 111 is in a similar fashion from 1 to M serial number.Row electrode 111 receives M column data signal 115 from row driver 103, and column electrode 109 receives N capable address signal 107 from line driver 105 simultaneously.Display 101 comprises with not shown accessory part and responds material across the electric potential difference of display screen in the detectable mode of light together.Therefore, voltage is imposed on electrode 109 and 111 on display 101 respective side, form by overlapping electrode by photopolymerization initiation N * M separately the array of pixel 113 generate piece image.Electrode 109 and 111 is configured so that each pixel 113 is associated with the combination of two electrodes.
Regular display drives the factor of being considered
Passive LC D is suitable for responding last average signal or R.M.S signal of the time that is applied on each pixel.Come cross chart picture " scanning " on display, to generate image by send appropriate signal to display.Therefore, by applying row and column signal scanning image, they produce by light and operate the necessary photoresponse of each pixel generation image.Thereby the signal that each row address signal 107 and column data signal 115 change along with the time along with time variation generation when display is scanned.These two groups of variable signals will pass through battery lead plate subsequently and produce needed voltage difference on the intersection pixel.This pixel voltage difference will be modulated the liquid crystal molecular orientation, and it is modulating the incident light and the different colourities that produce reflection or launch for each pixel again.Thereby these pixels are subsequently by the synthetic again piece image that generates of spectators' vision.
Although be not limitation of the present invention, a kind of commonsense method that generates needed R.M.S voltage difference on each pixel is by sequentially applying capable address signal, its amplitude is used for " selection " each row, apply the column data signal simultaneously, its amplitude is used for according to indicating which pixel of select row " to be opened " or " pass " to the suitable photoresponse of applying voltage.Therefore, the row signal comprises scanning sequency information, and column signal comprises and selected which relevant data message.Each row and column signal is along with the time changes, and only selects every row once usually when each type scanner, will come to generate piece image according to display technique to generating necessary certain value of photoresponse by the R.M.S driven of each pixel.By time sequencing type scanner information is so sent to display according to select row.The column data signal is timed corresponding to the line time order, generates needed voltage difference on the point of crossing of row and column electrode.Consideration can be selected, change or the time sequencing of the select row that the line scanning order of control is given is of great use, especially for the present invention.To illustrate subsequently according to different line scanning order driving display influences to show power, can reduce demonstration power in proper order by selection, change or control line scanning.
The display power requirement
Driving the LCD display desired power is to use capable addressing and column data signal to drive row and column electrode desired power sum.Many prior aries provide delegation or multirow information simultaneously to display usually.The row address signal sends signal to delegation or multirow, simultaneously the column data signal provide with corresponding to the relevant data of the pixel of select row.The power that driving row or column LCD electrode is consumed directly relates to CfV
2, wherein C is a load capacitance, and f is that toggle count device and V are swing voltages, and the swing voltage that wherein is used for arbitrary special electrodes is that the maximum voltage that imposes on electrode when showing piece image deducts minimum voltage.For a given LCD design, C and V will be constant, and the indication of power that therefore drives arbitrary specific row or column is with relevant with the number of times of voltage reversing (" switching ") on the circuit.Because each row all will be scanned once on every frame, the capable power requirement of line scanning is constant.Because the row switching rate depends on the line scanning order, will be described in proper order so that a kind of mode that reduces power consumption to be provided changing line scanning subsequently.
More briefly, row driver power requirement P
ColBe directly proportional with pixel charge Q, capacitor C, voltage V and average row switching frequency f by following formula:
P
col＝(N·M)QVf＝(N·M)CV
2f
The representative value of pixel capacitance and voltage is respectively 2 to 4pF and 2 to 3V, pixel count (N * M) fix for a given display, N and M change in 30 to 500 scope, so the total power consumption of a given display unit is directly proportional with average row switching rate f.Order by shown image and scanning LCD display row is determined switching rate jointly.In fact, image model and line scanning order will be controlled the row switching frequency, and this frequency directly is directly proportional with demonstration power.As mentioned above, therefore the line scanning order can provide a kind of mode that shows power that reduces.
Reduce the demonstration that shows power in proper order by revising line scanning
Variation on the display image desired power may be very big, as be used to show that the signal of a checkerboard pattern is represented, and wherein each pixel has the open/close state opposite with each direct neighbor pixel.Fig. 2 illustrates the checkerboard pattern that uses conventional progressive scanning picture to show, owing to generate the column signal that this pattern need replace in proper order with continuous line scanning, needs a very large power.Fig. 2 illustrates the signal graph of a passive liquid crystal display, and wherein the combination of select row addressing and column data column signal causes being shown on the suitable ranks position of information display of capable and M=4 row at N=4.A display may comprise a large amount of row and columns usually, approximately a hundreds of common row and column.Row address signal 107 is labeled as VR
i, wherein i nominated bank numbers, and column data signal 115 is marked as VC
j, j specify columns label wherein.
Checkerboard pattern is one of the highest power consumption pattern of order of lining by line scan from the scanning of display end to end.Therefore, checkerboard pattern shows that improvement on the power is to use the preferably indication of the power-saving amplitude that the present invention can obtain.For the checkerboard pattern of the use progressive scanning technology of Fig. 2 ( row order 1,2,3 and 4), the power requirement of every frame is switched by 4 row and 16 row switchings provide.
By considering to use the reduction row frequency of best line scanning order, show that the improvement on the power is obvious.Fig. 3 diagram is used for shows signal of the present invention when pixel layout identical with prior art Fig. 2 of realization and use on same physical display 101 and checkerboard pattern.The capable address signal 303 of Fig. 3 is according to row order 1,3,2,4 scan images.Representational " opening " pixel 305 and " pass " pixel 307 signals also are illustrated on this figure.Average voltage is identical with the representational prior art pixel of Fig. 2 in each case.Yet, using scanning technique of the present invention, checkerboard pattern needs every frame to have 4 row switchings and 4 row switch.Therefore, the present invention generates pattern same as the prior art as can be seen, has identical row and switches number, and 1/4th row switching is only arranged.In this example, the present invention is reduced to 1/4th of prior art power consumption with the power consumption of row driver.
Power-saving shown here is not restricted to addressing scheme shown in Figure 3.Other scheme comprises that multi-line addressing scheme (MLA) also will benefit from the present invention, wherein checks and selects scanning sequency to minimize power consumption for displays.The another kind of modulating system of using the gray tone that relates to use the frame rate modulation of the present invention, wherein each frame comprises an integer field, and is scanned to generate grey level on each location of pixels.For this application, use is similar to realization described herein, keep each line scanning order long enough with at least twice scanning by in each frame each, allow all frames to be used the two poles of the earth scanning.
In addition, only be to cause one of a plurality of line scanning orders that show power-saving with reference to figure 3 described line scanning orders.Other that paid close attention to includes but are not limited to line scanning order and pseudorandom the lining by line scan of scanning display line by the built-up sequence of jump multirow in proper order.Use description to subsequently generate these and other scanning sequency, and be used for method and apparatus and other and realization the present invention relevant item of adaptively modifying line scanning order to reduce power consumption.In addition, use other flat display technology, wherein pel array is scanned with the generation image, and wherein because the capacity load that occurs on the row electrode of concrete display structure makes row driver experience significant power consumption, can realize similar power-saving.The example of this display comprises the AC plasma display panel, the display board of based thin film EL.Therefore, method described herein is generally applicable to driving various displays.
Example
The discussion of front has illustrated that the line scanning order of revising multiplexing demonstration can significantly reduce the demonstration power requirement.Use this notion, will go through several embodiment of method and apparatus of the present invention.At first, explanation can be produced a display driver embodiment of all advantages of the present invention.To be to use the demonstration power of reduction to show or be used for several embodiment of display message subsequently.
In first embodiment, it is that a given demonstration input generates optimal sequence that predetermined information is combined in the look-up table.In a second embodiment, in display driver, generate one and estimate which order in a plurality of available rows scanning sequencies of expression is best, use this optimal sequence then.First and second embodiment generate has image known or the estimation optimal sequence, has therefore realized significant demonstration power-saving.Optionally other embodiment recycles a plurality of line scannings orders, uses each to generate image in proper order, measures the indication that shows power, and select one will be with the order of lower-wattage work.Particularly, check a plurality of possible low-power consumption line scanning orders, use one " the best " order to drive this display then.Display circuit can generate various line scanning orders by hardware or software.These determine the order that image line is scanned in proper order.For every kind of possible line scanning order, measure or calculate the indicatrix (FOM) that expression shows power.As mentioned above, the change of line scanning order causes showing the change of power, and therefore causes the variation among the FOM.Indicatrix relatively, and select and the corresponding line scanning of indicatrix that meets a standard comes driving display in proper order.Indicatrix can be the measurement of carrying out on display and display driver, perhaps can be generate image show before according to the result of calculation of pattern attribute.In alternate embodiment, keep the ground long enough with or repeatedly in proper order each line scanning with twice of image scanning, measure thereby can carry out accurate indicatrix.
When recycling a plurality of line scannings order, may pass through some non-optimal sequence driving displays, so increase power consumption.Therefore, the frequency that needs the restriction select progressively.In order to realize this purpose, the 3rd embodiment allows to trigger this circulation on the time interval that is provided with.The 4th embodiment triggers by the change in showing input, and the 5th embodiment triggers by the change in showing the power indication.The 6th embodiment uses one to pre-determine the line scanning order, and this line scanning is determined the display application that has low-down power consumption and be selected as being used for certain plan in proper order.
For clear, will equipment, method and notion be discussed with the form of object lesson.Yet method of the present invention can use various device to operate.And flogic system can comprise what various hardware, programmable component and difference in functionality were known in the art with modular form.The different embodiment of a system can comprise the various combination of unit and function, and various function combinations can be become various assembly of elements.Example described herein and embodiment be only for illustrative purpose, for the person of ordinary skill of the art, various modifications or change the spirit and scope that obviously will be included in the application and the protection domain of claims in.
Display driver embodiment
The display driver that can use the enough particular row scanning sequencies of energy to generate image is realized advantage of the present invention.Though other method can allow display message by this way, Fig. 4 represents such embodiment.Particularly, display 101 receives one and shows input 431, and it is stored in the video data RAM 403.The display of being mentioned 101 obviously is included in instructions, claims and the accompanying drawing the local arbitrarily type of display of being discussed, and will use discontinuous or change the display of line scanning order with any other type of the power operation of reduction.Show that input 431 can comprise the message bit pattern that will be shown, perhaps can comprise character string or will be converted into some other more senior indication of bitmap video data, comprise being used for the colored multi-layer information that shows.Video data 431 is stored among the video data RAM 403, and preserves with final generation column data signal 413 at this.
The permission scanning sequency is different from the scanning sequency maker of conventional line scanning order or the use of other assembly allows discrete order or switch between a plurality of orders to reduce to show power.Generate one of a plurality of line scanning orders 433 by an input indication order maker 437, show that input 431 is shown on LCD 101 with the line scanning order of appointment.Because being illustrated, demonstration power depends on that line scanning order 433, the input of order maker 437 can be used to revise or change demonstration power.
The scanning sequency of prior art is the pixel column of type scanner 101 sequentially, therefore can use in proper order 1,2 ..., N} represents, and is wherein capable sequentially by the every row of scanning of a display from the 1st row to N.As previously mentioned, by optimizing the line scanning order, show that the power that is consumed can significantly be reduced.For example, in proper order 1,3,5 ... succeeded by 2,4,6 ... can reduce the power that row driver was consumed with little display level to 100 pixel lines.Other important order is two orders of going of jumping, with 1,4,7 ... succeeded by 2,5,8 ..., again succeeded by 3,6,9 ... represent, and the order of pseudorandom order and other row that jumps, or the order of other non-orderization.All these orders all comprise within the scope of the invention.Other importance of the present invention is be expert at ability that changes between the scanning sequency and the ability of only giving monitor power supply with a kind of order.Being used for generating the several different methods of these orders and some of technology comprises: have selectable preloaded and the totalizer that increases progressively able to programme, generate known other pseudorandom order maker technology of those of ordinary skill in the bit exchange counter bit-order of a pseudorandom order and the Logic Circuit Design field.
Some embodiments of the present invention are used and are shown that the power that is consumed is indicated and steering logic is determined best line scanning order.Show that the power indication that is consumed is by index measurement 415 determined indicatrixs 435.Exist multiple generation indicatrix minimizing the mode that shows power, but some selecting technologies are illustrated as dotted line in Fig. 4.Various index map measuring techniques and not meaning that limit the scope of the invention or purpose, also have other technology of measuring or obtaining the approximate indication of 101 consumed powers of display.As discussed above, because every row is powered same number, the line driver power consumption is substantially the same between different line scanning orders.Several modes of determining indicatrix according to the power requirement of row driver 413 are illustrated in Fig. 4.In alternative embodiment, the combination of some row power and row power can be the useful indication of power consumption.The direct mode that generates row power index figure measurement is directly to use the current power or the current requirements of meter 417 supervision row drivers 405 and produce a power or a proportional signal of measuring with power or current measurement meter 423 of electric current.Also can be by the power of an electric charge pulsation 421 and adjuster 419 control row drivers 405.Electric charge pulsed counter 425 provides the method for another kind of measurement index figure.The another kind of method of measurement index figure is to monitor column signal by toggle count device 427, and described counter generates the indication of column data signal 413 switching frequencies.
First embodiment: based on the look-up table of line scanning select progressively
Fig. 5 and Fig. 6 are first embodiment that the present invention searches embodiment.The equipment of Fig. 5 comprises that use is a plurality of from the capable address signals 411 of demonstration input 431 generations and the display logic of column data signal 413 driving displays 101.Particularly, the display logic of this embodiment comprises look-up table 501, scanning sequency maker 437, address ram maker 401, video data RAM403, demoder 407, line driver 409 and row driver 405.Show that input 415 can comprise the message bit pattern that will be shown, can comprise that perhaps a character string maybe will be converted into some other more high-grade symbol of bitmap video data, may comprise being used for the colored multi-layer information that shows.The information relevant with showing input 431 is stored among the video data RAM 403, and is held finally to use when generating column data signal 413.Show that input 431 also is provided for look-up table 501, the lowest power that uses when being determined to generate the demonstration input picture on display 101 by it or some other preferred " the best " are in proper order.The details of look-up table 501 depends on the type and the quantity of the difference demonstration that will be generated.Therefore, for example, optimal selection line scanning order can be different between alphanumeric pattern, pictorial pattern, blank demonstration or gaming display pattern.Look-up table 501 can also comprise more specifying information, is best for which scanning sequency of given menu that will show for example, and perhaps which is best in proper order for alphanumeric combination.Information in the look-up table 510 or can be by determining according to using estimated value that certain algorithm calculated to measure similar display unit, perhaps determine that according to the statistical study that is the definite best line scanning order of class demonstration input perhaps this information can be determined by certain other technology.
Which look-up table 501 generates by indication and comes in proper order to communicate by letter with scanning sequency maker 437.In one embodiment, look-up table 501 and scanning sequency maker 437 use to write a Chinese character in simplified form and communicate, and described writing a Chinese character in simplified form comprises that an index is to represent that the multiple any scanning sequency that sets in advance in the scanning sequency will be scanned order maker 437 and produce.For example, show, can represent this three orders with the index that can adopt numerical value 1,2 or 3 then if determine to have only 3 kinds of scanning sequencies to be used for all images in advance.Look-up table 501 will be analyzed subsequently and show input 431, search the index (optimal sequence index) corresponding to optimal sequence, and this index is sent to order maker 437, generate optimal sequence corresponding to the optimal sequence index subsequently by it.Alternate embodiment can be included in look-up table and scanning sequency maker in the individual unit, corresponds directly to the input genesis sequence by it, needn't make index of reference.
Fig. 6 illustrates the process flow diagram of first embodiment.The function of demoder 407, line driver 409, address ram maker 401, video data RAM 403 and row driver 405 is represented with the demoder among Fig. 6/driver functions frame 605.The function of look-up table 501 and scanning sequency maker 437 is represented with square frame 601 and 603 respectively.The process flow diagram of Fig. 6 has been emphasized to import 431 information flows to demonstration 101 from showing, and describes the order that use demonstration input generates the driving demonstration in detail.
Second embodiment: estimating power requirement before using available rows scanning sequency display image
Fig. 7 and Fig. 8 illustrate second embodiment, and its use is determined the line scanning that the low-power display operation is provided and generates demonstration in proper order.As previously mentioned, the change of line scanning order will change demonstration power, therefore change FOM.The second embodiment of the present invention comprise by cycle through available order, according to order of estimated power selection and only use selected order to drive demonstration, thereby determine best line scanning order.Circuit is the estimating power requirement when using a selected order to drive demonstration, thereby selects the line scanning order from a plurality of line scanning orders.Similarity between second and first embodiment will be convenient to discuss.Particularly, Fig. 6 and Fig. 7 diagram is used for the process flow diagram of first and second embodiment.The function of the look-up table 601 of first embodiment substitutes with a series of step, promptly sends to order maker 603 and cycles through one group of S line scanning order by going sequence identifier or index.The look-up table 601 usefulness demoders 701 of first embodiment, indicatrix estimator 703, flip-flop circuit 705, sequence selector 707 and order maker 709 substitute.In case from showing that input 431 receives information and receives the line scanning order of current selection from order maker 709, the signal that demoder 701 is regenerated, is similar to or generation is directly proportional with column address signal, described column address signal represents to be sent to the content of display row electrode.The output of demoder 701 uses a kind of technology to estimate indicatrix, any technology that described technology includes, but are not limited to before discuss by indicatrix estimator 703.If the change on the numerical value or determine on indicatrix to have an obvious variation with respect to the change that sets in advance the trigger level then sends to sequence selector 707 with a signal.Sequence selector 707 cycles through each S line scanning order subsequently, and sequential index and corresponding indicatrix add up.After cycling through these orders, sequence selector 707 is selected the indicatrix corresponding to the order of lowest power consumption, and this becomes selected order in proper order.
Fig. 8 is the hardware arrangement of a combination second embodiment of the invention and the block scheme of process flow diagram, wherein determines the line scanning order before generating image.As in first embodiment, use demonstration defeated 431 and select row scanning sequency driving display 101.Drive trigger 807, line scanning order maker 809, scanning sequency maker 811 and address ram maker 813 by video data RAM801, row driver 803, indicatrix estimator 805, indicatrix and determine selected line scanning order.Although each assembly 801-813 repeats the function that they generate the corresponding component of shows signal, they can be different circuit, because they are not used to generate display image, and therefore with lower power level operation.Because there is not function overlapping, some assemblies with similar functions also can be made up and be used for dual purpose mutually.
Start from previous line scanning order of selecting and corresponding address ram, video data RAM 801 receives the information that is shown, and pass through with reference to figure 4 described circuit, the indicatrix measuring technique in use row driver 803 and the indicatrix estimator 805 is determined the indicatrix of an estimation.Think that estimated indicatrix surpasses a certain threshold value or change of setting up in advance if indicatrix drives trigger 807, then sequence selector 809 is triggered to cycle through available line scanning order.Sequence selector 809 also is the estimated indicatrix of each line scanning sequential track, and selects a line scanning order, and the suitable order identifier is sent to scanning sequency maker 437.By parameter figure is separated with driving display, this embodiment can select a line scanning order before image shows.A useful indicatrix estimator that is used for this embodiment is by analyzed the average row switching frequency that the column data signal is determined before display image.Square frame 811,813,801 and 803 function also can be provided to reduce the complicacy of circuit, to cause power to increase to cost in proper order because cycle through non-best line scanning by they corresponding corresponding circuits 437,401,403,405.
The 3rd embodiment: use the measured indicatrix that on the time interval of setting, triggers to select the line scanning order
Below three embodiment by cycling through a plurality of line scanning orders, measurement index figure, selecting to meet a line scanning order of a certain standard, use this to drive in proper order then and show and determine that selected line scanning is in proper order.In each embodiment of these embodiment, and according among any other embodiment that shows measurement index figure, circulate in when image kept two frames or multiframe and occur, measure thereby can carry out accurate indicatrix.Because each line scanning order may have different power requirements, some in these power requirements may be greater than pre-trigger sequence desired power, and cycling through these orders may need than using the bigger power of pre-trigger sequence.Therefore, determine indicatrix, may need compromise frequency or the time of determining to seek lower power state if drive demonstration according to one.Use a fixedly embodiment of triggering state, the time that each line scanning need be kept in proper order is to cycle through S order to determine 10 to 30 times of needed required time cycle of scanning sequency.In the 3rd embodiment, go up the trigger sweep circulation at a fixed time at interval.
Fig. 9 is the hardware arrangement of a combination third embodiment of the invention and the block scheme of process flow diagram, and wherein the selection of line scanning order triggers the one-period counter.This implementation is attached to sequence selector 903 and period counter 901 in the display driver of Fig. 4.Sequence selector 903 sends to scanning sequency maker 437 with certain other indication of an index or select row scanning sequency.Before gone through operation based on the display of order maker output.On the time interval of programming, period counter 901 trigger sequence selector switchs 903 cycle through all line scanning orders of maker.Show that for most of STN LCD the time interval in about 5 seconds will produce good result between triggering in succession, although should the cycle possible different with display message for different display techniques.When being triggered, sequence selector 903 beginning indication displays use in a plurality of scanning sequencies each to generate image in proper order in order.Use any suitable technology to measure 415 for each line scanning generates indicatrix in proper order.Indicatrix is measured output and is stored in (this schematically illustrates by circles mark " A ") in the sequence selector together with the relevant indication of scanning sequency in Fig. 9.Tested when all scanning sequencies, and their indicatrix has been when being stored, and sequence selector 903 is selected a line scanning order according to indicatrix, thereby the best line scanning that use order maker 437 can be used drives demonstration in proper order.As mentioned above, each scanning sequency be held long enough with obtain one accurately indicatrix determine.
The 4th embodiment: use the measured indicatrix that when showing that input changes, triggers to select the line scanning order
Figure 10 is the hardware arrangement of a combination fourth embodiment of the invention and the block scheme of process flow diagram, wherein by showing that input triggers the selection of line scanning order.Particularly, the 4th embodiment cycles through the several rows scanning sequency in response to the change that input shows for each proceeding measurement indicatrix the time.According to line scanning order of predetermined Standard Selection, and use selected line scanning to come driving display in proper order.
The embodiment of Figure 10 is attached to sequence selector 903 and input driving triggering maker 1001 in the display driver of Fig. 4.Sequence selector 903 sends to scanning sequency maker 437 with index or certain other indication of select row scanning sequency.Go through the display operation of exporting based on the order maker in conjunction with Fig. 4, and in the in question trigger circuit of the 3rd embodiment, use.Input drive to trigger maker 1001 and monitors and show input 431, and according to the change in the input, and trigger sequence selector switch 903 (by circles mark " E " expression) cycles through all or a part of available rows scanning sequency.Identical with the 3rd embodiment, in case be triggered, sequence selector 903 cycles through line scanning order, store measured index map, and a definite select row scanning sequency with driving display up to being triggered once more.
The 5th embodiment: the measured indicatrix that triggers when use changes by indicatrix is selected the line scanning order
Figure 11 is the hardware arrangement of combination fifth embodiment of the invention and the block scheme of process flow diagram, wherein triggers the selection of line scanning order by the change in the indicatrix.Particularly, the 5th embodiment cycles through a plurality of line scanning orders in response to the change of measured indicatrix for each proceeding measurement indicatrix the time.According to line scanning order of predetermined Standard Selection, and use selected line scanning to drive demonstration in proper order.
The embodiment of Figure 11 is attached to sequence selector 903 and indicatrix driving triggering maker 1101 in the display driver of Fig. 4.Sequence selector 903 sends to scanning sequency maker 701 with index or certain other indication of select row scanning sequency.Display operation based on the output of order maker will be gone through in conjunction with Fig. 4, and use in the trigger circuit that the 3rd embodiment is discussed.Indicatrix drive to trigger maker 1101 and monitors that indicatrixs measure 415 output, and according to the change in the indicatrix, and trigger sequence selector switch 903 cycles through all or some available rows scanning sequencies.Identical with third and fourth embodiment, in case be triggered, sequence selector 903 cycles through the line scanning order, stores measured indicatrix, and determines that selected line scanning order shows up to being triggered once more to drive.
The 6th embodiment: fixedly line scanning in proper order
Except detecting the working time of the best line scanning order described in embodiment formerly, can also need select an order in advance for the demonstration that a whole class is used.This embodiment is for particularly useful such as the equipment of mobile messaging cell phone, personal digital assistant or pager.For example, when generating the power consumption of medium reduction for all other display patterns, in proper order { 1,3,5 ... succeeded by order { 2,4,6 ... reduce checkerboard pattern (it be often used in simulation every pixel one bit gray-scale displayed, for example STN LCD) significantly and the row driver power consumption of candy strip is known.Such an embodiment can be used in combination by using a scanning sequency maker, as shown in Figure 4, has a fixing discontinuous line scanning order, for example in proper order 1,3,5 ... succeeded by the order 2,4,6 ....This a series of order can generate by the LSB and the MSB of exchange digital counter.For example the counter of 7 bits is used to control the LCD of 128 row, exchanges the 7th bit and the 0th bit of counter then, genesis sequence 0,2,4,6,8 ... }+{ 1,3,5,7 ....Discontinuous line scanning order also can be based upon in the demoder, and the address ram maker produces identical effect.
Alternative embodiment
Other combination of assembly or to reconfigure to carry out identical function described herein be known.The example of equivalent arrangements includes but are not limited on other function: have demoder/driver functions of being carried out by two or more stand-alone assemblies, decoding separates with driving circuit; Sequence selector and maker are combined into the individual module of genesis sequence, after the power of measuring last order, store this power and select optimal sequence; Have a plurality of order makers to generate dissimilar orders, for example having one increases row maker, a reduction row maker and a pseudo-random generator; With a capable sequential index is sent to the order maker to replace the line scanning order of a reality.In addition, other algorithm, for example the method for user mode mechanism opinion or neural network acquisition can cycle through a series of line scanning order, determines optimal sequence, and uses this optimal sequence to come to provide power as demonstration.Determine indicatrix and select other method of best line scanning order also can be included as given display message and line scanning order parameter figure in advance, and determine order according to these precalculated values.
Claims (43)
1. the method for addressing one display, described display comprises a two-dimensional array of being expert at and listing arrangement, wherein by provide the capable address signal and the column data signal that are applied to delegation or multirow pixel to come this array of addressing simultaneously with line scanning order named order, described method comprises according to its corresponding indicatrix obtains a preferred line scanning order, and wherein this indicatrix represents that display generates the power that image consumed.
2. the process of claim 1 wherein that indicatrix is the measured value of power consumption for displays.
3. the process of claim 1 wherein that indicatrix is the measured value that drives the column data marking current.
4. the process of claim 1 wherein that indicatrix is the measured value of column data signal switching frequency.
5. the process of claim 1 wherein that indicatrix is the measured value of column data signal charge pulsation cycle index.
6. the process of claim 1 wherein that described obtaining comprises that a look-up table, this look-up table represent based on the best line scanning order that will generate image.
7. the method for claim 6 also comprises according to best line scanning use in order capable address signal and column data signal driving display.
8. the process of claim 1 wherein to obtain and comprise:
A) obtain a plurality of line scanning orders and their corresponding indicatrixs; With
B) from a plurality of line scanning orders, select a best line scanning order according to their corresponding indicatrixs,
This method also comprises according to best line scanning use in order capable address signal and column data signal driving display.
9. the method for claim 8, wherein a) and b) on Fixed Time Interval, occur.
10. the method for claim 8 also comprises a variation in the detected image, and when wherein in detecting image changes a) and b) occur.
11. the method for claim 8 also comprises a threshold value is set, wherein when indicatrix surpasses threshold value a) and b) occur.
12. the method for claim 11, wherein threshold value is the indicatrix of a previous display image, and this display image is according to previous best line scanning use in order capable address signal and column data signal.
13. the method for claim 8 is not wherein obtaining indicatrix under the situation that generates image on the display.
14. the method for claim 8, wherein indicatrix is measured in a) process.
15. the method for claim 8, wherein each line scanning specifies every capable pixel to be addressed once in proper order.
16. the method for claim 15, wherein line scanning comprises a pseudorandom order in proper order.
17. the method for claim 15, wherein row is by from 1 to N numbering, and wherein line scanning order is specified the pixel column that number is addressed by its row according to the aforementioned sequence of at least a algorithm.
18. the method for claim 17, wherein at least one or the polyalgorithm sequence of advancing comprises:
A) first advance sequence 1,3,5 ..., i＜=N}; With
B) second advance sequence 2,4,6 ..., i＜=N} and
The address signal of wherein going sequentially is applied to the row that advances sequence numbering according to first, sequentially is applied to the row that advances sequence numbering according to second then.
19. the method for claim 17, wherein at least one or the polyalgorithm sequence of advancing comprises:
A) first advance sequence 1,4,7 ..., i＜=N};
B) second advance sequence 2,5,8 ..., i＜=N}; With
C) the 3rd advance sequence 3,6,9 ..., i＜=N} and
The address signal of wherein going sequentially is applied to the row that advances sequence numbering according to first, sequentially is applied to the row that advances sequence numbering according to second, sequentially is applied to the row that advances sequence numbering according to the 3rd then.
20. addressing one display is to generate the method for piece image according to delegation's scanning sequency, described display comprises a two-dimensional array of being expert at and listing arrangement, wherein come addressing array according to the image applications row address signal and the column data signal that will generate, and wherein the order of delegation in this array of addressing or multirow pixel is specified in line scanning in proper order, described method comprises obtains a best line scanning order, wherein should the best line scanning order specify the pixel column that is addressed with the order of skipping adjacent lines.
21. the method for claim 20, wherein pixel column is by from 1 to N numbering, and wherein line scanning comprises in proper order:
A) first advance sequence 1,3,5 ..., i＜=N}; With
B) second advance sequence 2,4,6 ..., i＜=N},
The address signal of wherein going sequentially is applied to the row that advances sequence numbering according to first, sequentially is applied to the row that advances sequence numbering according to second then.
22. a definite display generates the method for image power demand, wherein this display is included in the two-dimensional array of arranging on the row and column, and wherein by coming this array of addressing according to the image applications row address signal and the column data signal that will generate, described method comprises obtains the indicatrix that the expression display generates the power consumption of piece image.
23. the method for claim 22, wherein indicatrix comprise display power consumption, drive the electric charge pulsation cycle index of electric current, column data signal switching frequency or the column data signal of column data signal.
24. one kind changes the equipment that line scanning reduces the demonstration power that generates an image in proper order, wherein this display comprises the two-dimensional array that is arranged on the row and column, wherein come this array of addressing according to the image applications row address signal and the column data signal that will generate, and the order that delegation or multirow pixel are addressed in the line scanning order specified arrays wherein, described equipment comprises that one provides the driver of information for driving a display, described driver comprises display logic to select the line scanning order termly, and wherein selected line scanning order is selected to reduce the demonstration power that generates piece image.
25. the equipment of claim 24, wherein display logic is regularly selected the line scanning order in response to the variation that will generate in the image.
26. the equipment of claim 24, the capable order with jump delegation or multirow of at least one order specified pixel in wherein a plurality of line scanning orders is addressed.
27. the equipment of claim 24 comprises that also is used to generate the display of a width of cloth corresponding to the image that shows input, wherein this display generates image by capable addressing and column data signal according to the select row scanning sequency.
28. the equipment of claim 27, wherein display comprises passive LCD display, active LCD display, electroluminescent display or plasma display.
29. one kind changes the equipment that line scanning reduces the demonstration power that generates piece image in proper order, wherein this display comprises the two-dimensional array that is arranged on the row and column, wherein come this array of addressing according to the image applications row address signal and the column data signal that will generate, and the order that delegation or multirow pixel are addressed in the line scanning order specified arrays wherein, described equipment comprises an order maker, is used to generate the line scanning order.
30. the equipment of claim 29, wherein the order maker can be controlled to generate the line scanning order of an appointment.
31. the equipment of claim 30 also comprises a sequence selector, generates a best line scanning order with the control sequence maker.
32. the equipment of claim 29, wherein the order maker can be configured to and sequentially generate a plurality of line scanning orders.
33. the equipment of claim 32, wherein the order maker can be triggered to generate a plurality of line scanning orders.
34. the equipment of claim 29 comprises that also is used to generate the display of a width of cloth corresponding to the image that shows input, wherein this display generates image by capable addressing and column data signal according to the select row scanning sequency.
35. the equipment of claim 34, wherein display comprises passive LCD display, active LCD display, electroluminescent display or plasma display.
36. the equipment of claim 29, wherein row is numbered from 1 to N, and wherein the order maker generates the line scanning order, this order specified pixel is capable to be addressed with every capable address pixels order once, and wherein this row address signal is to be different from order { 1,2 ..., the order of N} is applied to each pixel column.
37. the equipment of claim 36, wherein the line scanning of order maker comprises in proper order:
A) first advance sequence 1,3,5 ..., i＜=N}; With
B) second advance sequence 2,4,6 ..., i＜=N},
Wherein order output is according to the first sequence order ground addressed row of advancing, then according to the second sequence order ground addressed row of advancing.
38. one kind is used to be controlled at the equipment that generates the piece image power demand on the display, wherein this display is included in the two-dimensional pixel matrix of arranging on the row and column, wherein pass through to use row address signal and this array of column data signal addressing according to the image that will generate, this equipment comprises an indicatrix measuring equipment that indicatrix is provided, and wherein indicatrix is that power consumption for displays is corresponding to the function that shows input and line scanning order.
39. the equipment of claim 38, wherein this indicatrix measuring equipment comprises power consumption for displays, the electric current that drives the column data signal, column data signal switching frequency or column data signal charge pulsation cycle index.
40. one kind on display, use one fixedly line scanning generate the equipment of piece image in proper order, wherein this display comprises a two-dimensional array that is arranged on the row and column, wherein come this array of addressing according to the image applications row address signal and the column data signal that will generate, and wherein the order that delegation in this array or multirow pixel are addressed is specified in this line scanning in proper order, and described equipment comprises the line scanning order of a jump delegation or multirow pixel.
41. the equipment of claim 40, wherein row is by from 1 to N numbering, and wherein line scanning order specified pixel is capable is addressed with every capable address pixels order once, and wherein this row address signal is to be different from order { 1,2 ..., the order of N} is applied to each pixel column.
42. the equipment of claim 41, wherein the line scanning of order maker comprises in proper order:
A) first advance sequence 1,3,5 ..., i＜=N}; With
B) second advance sequence 2,4,6 ..., i＜=N},
Wherein order output is according to the first sequence order ground addressed row of advancing, then according to the second sequence order ground addressed row of advancing.
43. cell phone that comprises display with fixedly line scanning order, wherein this display is included in the two-dimensional array of arranging on the row and column, wherein come this array of addressing according to the image applications row address signal and the column data signal that will generate, and wherein the order that delegation in this array or multirow pixel are addressed is specified in line scanning in proper order, and described equipment comprises the line scanning order of a jump delegation or multirow pixel.
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| US8164561B2 (en) | 2007-04-12 | 2012-04-24 | Au Optronics Corporation | Driving method |
| CN101855665A (en) * | 2007-11-08 | 2010-10-06 | 皇家飞利浦电子股份有限公司 | The pixel of driving display |
| CN104036744A (en) * | 2014-06-07 | 2014-09-10 | 深圳市华星光电技术有限公司 | Driving method and device of display |
| CN104966504A (en) * | 2015-07-31 | 2015-10-07 | 京东方科技集团股份有限公司 | Grid line driving method and device |
| CN104966504B (en) * | 2015-07-31 | 2017-09-01 | 京东方科技集团股份有限公司 | grid line driving method and device |
| CN107452323A (en) * | 2016-05-31 | 2017-12-08 | 无锡华润矽科微电子有限公司 | Realize the circuit and method that any passage continuously scans |
| CN109427286A (en) * | 2017-08-25 | 2019-03-05 | 西安诺瓦电子科技有限公司 | Display screen display control method, scanning card and display screen system |
| CN109427286B (en) * | 2017-08-25 | 2020-06-23 | 西安诺瓦星云科技股份有限公司 | Display screen display control method, scanning card and display screen system |
| CN109920390A (en) * | 2019-04-30 | 2019-06-21 | 京东方科技集团股份有限公司 | Picture element scan driving method, device, equipment, medium and picture element scan device |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2001255570A1 (en) | 2001-11-07 |
| KR20030010607A (en) | 2003-02-05 |
| JP2003532148A (en) | 2003-10-28 |
| EP1277194A1 (en) | 2003-01-22 |
| WO2001082284A1 (en) | 2001-11-01 |
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