CN101017655A - Driver for driving the display panel, its reading and writing method of the memory and display - Google Patents
Driver for driving the display panel, its reading and writing method of the memory and display Download PDFInfo
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- CN101017655A CN101017655A CN 200710006550 CN200710006550A CN101017655A CN 101017655 A CN101017655 A CN 101017655A CN 200710006550 CN200710006550 CN 200710006550 CN 200710006550 A CN200710006550 A CN 200710006550A CN 101017655 A CN101017655 A CN 101017655A
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Abstract
This invention provides one driver for drive display panel and its memory read method and the film transistor LCD device, which through design special memory read time sequence and under imbedding one memory in driver to solve the current technique crack effect in the film transistor display to lower the film transistor display integral consumption power.
Description
Technical field
The invention relates to a kind of driver of display panel and Thin Film Transistor-LCD of W method of memory and this driver of application thereof of driving, particularly relevant for a kind of driver of display panel and method that delay memory reads sequential and Thin Film Transistor-LCD of using this driver of driving.
Background technology
Multimedia society improves rapidly, is indebted to the tremendous progress of semiconductor subassembly or display device mostly.With regard to display, have that high image quality, space utilization efficient are good, the Thin Film Transistor-LCD (Thin film transistor liquid crystal display is called for short TFT-LCD) of low consumpting power, advantageous characteristic such as radiationless becomes the main flow in market gradually.
Generally speaking, in the driving framework with TFT-LCD now, usually with share voltage (the ACmode common voltage) driving framework (for example be line counter-rotating display technique) of AC mode be applied to existing general in, undersized TFT-LCD (promptly apply and exchange share voltage) to shared electrode, and be applied to have now the TFT-LCD (promptly applying the direct current share voltage) of general large-size with share voltage (the DC mode common voltage) driving framework (for example serve as the display technique of a little reversing) of DC mode to shared electrode.
The signal of video signal transmission mode of the display panel (display panel) in the tradition TFT-LCD is the transmission mode of sequentiality, also be that all sweep traces (scan line) in the display panel (display panel) are to be subjected to the sweep signal (scan signal) that gate drivers (gate driver) exported and to open one by one, the image input data (video data signal) that provided with the reception driver (driver) of correspondence, and the just so-called release of an interleave of this transmission mode (non-interlace) sweep signal.
Yet, if adopt the signal of video signal transmission mode of above-mentioned release of an interleave sweep signal, and adopt simultaneously under the condition of line counter-rotating (line inversion) display technique, can all to reverse at each bar sweep trace because of the interchange share voltage that puts on shared electrode, and cause the power consumption (power consumption) of TFT-LCD integral body to promote.
So in order to reduce the practice of TFT-LCD overall power consumption, the practice of prior art is the transmission mode that the signal of video signal transmission mode of the display panel in the TFT-LCD is changed into non-sequentiality, and just so-called staggered (interlace) sweep signal of this transmission mode.By this, if adopt the signal of video signal transmission mode of interlace scanning signal, and adopt simultaneously under the condition of line counter-rotating display technique, can only just need counter-rotating because put on the interchange share voltage of shared electrode at each picture (frame), so what can know by inference is that the consumed power of TFT-LCD integral body can reduce therefore and greatly.
Yet, the above-mentioned practice in order to make that the TFT-LCD overall power consumption reduces, though can reach its effect, but following one by one problem may betide TFT-LCD when playing animation, that is caused tears effect (tearing effect), and the simple saying of this phenomenon be exactly when TFT-LCD when playing video picture (recent video frame), can residual a last image frame part image input data (be close to import data for the image of half) of (prior video frame), make the display frame of TFT-LCD playback error.
And investigate in above-mentioned why change the signal of video signal transmission mode of the display panel in the TFT-LCD transmission mode of interlace scanning signal into after, when playing animation, it can cause the main cause of tearing effect is to be: generally speaking, above-mentioned mentioned driver (driver) inside can comprise a storer, and this storer reads image input data providing to display panel what the mode that reads of the transmission mode of interlace scanning signal can make the mistake, and then causes the display frame of TFT-LCD playback error to be watched to the user.
The storer of prior art driver below will be described, write, read mode when the signal of video signal transmission mode of the display panel in TFT-LCD adopts the transmission mode of interlace scanning signal.
At first, Fig. 1 illustrates the scanning synoptic diagram that adopts the transmission mode of staggered (interlace) sweep signal into the signal of video signal transmission mode of the display panel 101 in the prior art TFT-LCD 100.Please refer to Fig. 1, can obviously find out by Fig. 1, display panel 101 has 320 sweep trace SL, and the driving by gate drivers 103 opens sweep trace SL in the display panel 101 with the scan mode of non-sequentiality, and the image input data that provided of corresponding reception driver 105.
And above-mentioned simpler saying is exactly, gate drivers 103 can open in regular turn earlier all odd number bar scanning linears in the display panel 101 (1,3,5 ..., 319) SL, then open in regular turn again all interior even number bar sweep traces of display panel 101 (2,4,6 ..., 320) SL.And so type of drive will make display panel 101 be divided into Qi Tuchang (odd field) and bigraph field (even field) during a picture frame (frame), so can form an above-mentioned so-called picture behind stack strange figure field and the bigraph field.
Fig. 2 illustrates and is the storer 201 in the driver 105 of prior art driving display panel, when the signal of video signal transmission mode of the display panel 101 in TFT-LCD 100 adopts the transmission mode of interlace scanning signal, the mode that the reads synoptic diagram during first picture frame.Please merge with reference to Fig. 1 and Fig. 2, the read mode of storer 201 in the driver 105 (for example being SRAM) when the transmission mode of release of an interleave sweep signal is: at first, when writing 160 image inputs of the 1st image input data D_in_1_1 to the data D_in_1_160 of first picture frame in regular turn, the image that will read strange figure place needs is thereupon imported data to display panel 101.
But can obviously find out by Fig. 2, when the storer 201 of the 1st image input data D_in_1_1 that writes first picture frame to driver 105, and the 1st the image input data D_out_1_1 that thereupon reads strange figure field is correct image input data, when the storer 201 of the 2nd the image input data D_in_1_2 that writes first picture frame to driver 105, and the 3rd image input data D_out_1_3 that thereupon reads strange figure field is wrong image input data, itself because the 3rd the image input data D_in_1_3 that the storeies 201 in the driver 105 do not write first picture frame in wherein.
So according to above-mentioned know by inference be, beginning to finish to the 319th image input data D_out_1_319 from the 3rd the image input data D_out_1_3 that reads strange figure field all can be the image input data of unknown (un-know), but in 320 image inputs of the 2nd image input data D_out_1_2 to the data D_out_1_320 that reads the bigraph field, can image be imported data because of the storer 201 in the first Das Vorderradfahrwerkmit Vorderradantrieb 105 and write, all can be correct so import data D_out_1_2～D_out_1_320 in all images that read the bigraph field.
Then, Fig. 3 illustrates and is the storer 201 in the prior art driver 105, when the signal of video signal transmission mode of the display panel 101 in TFT-LCD 100 adopts the transmission mode of interlace scanning signal, and the mode that the reads synoptic diagram during second picture frame.Please merge with reference to Fig. 1～Fig. 3, continue behind first picture frame, when finishing to write the 160th image input data D_in_2_160, similarly also can read image input data that strange figure place needs in the 1st the image input data D_in_2_1 that begins to write second picture frame to display panel 101 thereupon.
But can obviously find out by Fig. 3, when the storer 201 of the 1st image input data D_in_2_1 that writes second picture frame to driver 105, and the 1st the image input data D_out_2_1 that thereupon reads strange figure field is correct image input data, when the storer 201 of the 2nd the image input data D_in_2_2 that writes second picture frame to driver 105, and the 3rd image that thereupon reads strange figure field to import data D_out_2_3 be that the 3rd image of the strange figure field that write during first picture frame imported data D_out_1_3.
So according to above-mentioned know by inference be, begin to the image input data D_out_1_3～D_out_1_319 that reads first picture frame of the 319th image input data D_out_2_319 end meeting correspondence from the 3rd the image input data D_out_2_3 that reads strange figure field, but in 320 image inputs of the 2nd image input data D_out_1_2 to the data D_out_1_320 that reads the bigraph field, can image be imported data because of the storer 201 in the first Das Vorderradfahrwerkmit Vorderradantrieb 105 again and write, all can be correct so import data D_out_2_2～D_out_2_320 in all images that read the bigraph field.
That is to say, the image of the strange figure field that second picture frame is read input data D_out_2_3～D_out_2_319 can be corresponding reads the image input data D_in_1_3～D_in_1_319 of the strange figure field that first picture frame write, and the 3rd picture frame subsequently, the 4th picture frame ... the image input data that are close to half during also all can a residual last picture frame are in wherein, and Here it is above-mentioned explain tear the reason that effect (tearingeffect) is caused.
And in order to solve the effect of tearing of TFT-LCD, prior art is that the someone envisions a kind of practice, just at the embedded many storeies of driver, allow and have two storeies simultaneously in the driver, wherein the effect of a storer is that the simple image that writes is imported data, the image that reads that the effect of another storer is then simple is imported data, and two storeies alternately write and read image input data.And so the practice is the effect of tearing that can solve TFT-LCD really, but the problem that is worth inquiring into is, with actual now driver processing procedure, simultaneously at embedded two storeies of driver, it can occupy too much area because of storer in driver, common single storer can occupy the area of driver 60%, so make and in driver, can't exist by simultaneously embedded two storeies, also can be degraded into theoretical conception and so solve the practice, and in can't the actual driver that is used in driving display panel now.
Summary of the invention
In view of this, purpose of the present invention just provides a kind of reading/writing method of storer and according to the driving method of the display panel of the method, it reads sequential by designing unique storer, so that in the prior art driver, under the condition of an only embedded storer, can solve the effect of tearing of above-mentioned prior art TFT-LCD.
Another object of the present invention just provides a kind of driver of display panel, it is by the driving method of the display panel of the invention described above, can be used in the driver of display panel of the present invention, and the effect that the same driving method that reaches above-mentioned display panel is desired to reach, and can practice in the driver that drives display panel now.
A further object of the present invention just provides a kind of display panel and uses the display of this display panel, its driver by the display panel of utilization the invention described above is in wherein, not only can solve the effect of tearing of prior art TFT-LCD by this, and can reach the total consumption power that reduces display panel equally, and display of the present invention is just at last when playing animation, and the picture that it presented also all is accurate.
Based on above-mentioned and other purpose, the reading/writing method of storer provided by the present invention comprises the following steps: at first, and between the first phase, in the write store, wherein M is a positive integer to M the image input data that driver is exported in regular turn.Then, between this first phase, when (M/2)+1 an image input data began in the write store, the odd number image that storer can begin to be output between the first phase and be write was imported data.
In a preferred embodiment of the invention described above, comprise N interregnum (Blanking) at least between the above-mentioned first phase, wherein N is the integer more than or equal to 0.
From another viewpoint, the driving method that the invention provides a kind of display panel comprises the following steps: at first, and during first picture frame, M the image input data that driver is exported are in regular turn in the write store.Then, during this first picture frame, when (M/2)+1 an image input data began write store, storer can begin to be output in an odd number image that is write during first picture frame and import data to display panel, and wherein M is a positive integer.
Again from another viewpoint, the invention provides a kind of driver of display panel, it is characterized in that comprising a storer (for example being SRAM), it is during first picture frame, M the image input data that driver is exported are written into wherein in regular turn, and during this first picture frame, when (M/2)+1 an image input data begin write store, storer can begin to be output in an odd number image that is write during first picture frame and import data to display panel, and wherein M is a positive integer.
From another viewpoint, the invention provides a kind of display again, it is characterized in that comprising a display panel and a driver.Wherein, driver has a storer, this storer is during first picture frame, M the image input data that driver is exported are written into wherein in regular turn, and during this first picture frame, when (M/2)+1 an image input data began write store, storer can begin to be output in an odd number image that is write during first picture frame and import data to display panel, and wherein M is a positive integer.
In a preferred embodiment of the invention described above, when storer finishes to write M image input data during first picture frame, and when beginning to write the 1st image input data during second picture frame after during first picture frame, storer can begin to be output in an even number image that is write during first picture frame and import data to display panel.
In a preferred embodiment of the invention described above, during the first above-mentioned picture frame with second picture frame during in comprise N interregnum (Blanking) at least, wherein N is the integer more than or equal to 0.
The reading/writing method of storer provided by the present invention goes for driving now in the storer (for example being SRAM) in the driver (driver) of display panel, and the reading/writing method of this storer can derive the driving method of display panel provided by the present invention.According to this driving method as can be known, the institute's image that writes input data can't export display panel immediately to during first picture frame, but after the image input data that write half during first picture frame, just begin to be output in an odd number image input data that write during this first picture frame, and during first picture frame, finish to write all images and import data, and when during second picture frame, beginning to write the 1st image input data, just begin to be output in an even number image that is write during first picture frame and import data to display panel.
By this, the interior memory data of driver that drives display panel is read in utilization read-write sequence so cleverly, what not only can solve prior art TFT-LCD tears effect (tearing effect), and in simultaneously can the storer (for example be SRAM) of practice in the driver that drives display panel now.In addition, be that the driving method of utilization display panel of the present invention is in wherein also because of the driver of display panel provided by the present invention, and display panel provided by the present invention and the display of using this display panel thereof also because of the driver that uses display panel of the present invention in wherein, so the total consumption power of the final display that presents of the present invention also can reduce greatly, and just at last when playing animation, the picture that it presented also all is accurately to watch to offer the user.
Description of drawings
Fig. 1 illustrates the scanning synoptic diagram that adopts the transmission mode of interlace scanning signal into the signal of video signal transmission mode of the display panel in the prior art thin film transistor-liquid crystal display.
Fig. 2 illustrates and is the storer in the driver of prior art driving display panel, when the signal of video signal transmission mode of the display panel in thin film transistor-liquid crystal display adopts the transmission mode of interlace scanning signal, and the mode that the reads synoptic diagram during first picture frame.
Fig. 3 illustrates and is the storer in the driver of prior art driving display panel, when the signal of video signal transmission mode of the display panel in thin film transistor-liquid crystal display adopts the transmission mode of interlace scanning signal, and the mode that the reads synoptic diagram during second picture frame.
Fig. 4 is the reading/writing method according to the storer that preferred embodiment of the present invention illustrated.
Fig. 5 is the driving method according to the display panel that preferred embodiment of the present invention illustrated.
Fig. 5 A illustrate for present embodiment during first picture frame with second picture frame during in do not add the synoptic diagram of interregnum.
Fig. 5 B illustrate into present embodiment during first picture frame with second picture frame during in add the synoptic diagram of an interregnum.
Fig. 5 C illustrate into present embodiment during first picture frame with second picture frame during in add the synoptic diagram of a plurality of interregnums.
Fig. 6 is the calcspar according to the display that preferred embodiment of the present invention illustrated.
Fig. 7 illustrates and is the storer in the driver of Fig. 6, when the signal of video signal transmission mode of the display panel in display adopts the transmission mode of interlace scanning signal, and the mode that the reads synoptic diagram during first picture frame.
Fig. 8 illustrates and is the storer in the driver of Fig. 6, when the signal of video signal transmission mode of the display panel in display adopts the transmission mode of interlace scanning signal, and the mode that the reads synoptic diagram during second picture frame.
Drawing reference numeral:
100,600: thin film transistor-liquid crystal display
101,601: display panel
103,603: gate drivers
105,605: driver
SL: sweep trace
201,701: storer
B: interregnum
O: an odd number image input data
E: an even number image input data
D_in_1_1～D_in_1_320: 320 image inputs of the 1st image input data to the data that write first picture frame
D_out_1_1～D_out_1_320: 320 image inputs of the 1st image input data to the data that read first picture frame
D_in_2_1～D_in_2_320: 320 image inputs of the 1st image input data to the data that write second picture frame
D_out_2_1～D_out_2_320: 320 image inputs of the 1st image input data to the data that read second picture frame
S401～S403: each step of the reading/writing method of storer of the present invention
S501～S503: each step of the driving method of the explicit panel of the present invention
Embodiment
For above and other objects of the present invention, feature and advantage can be become apparent, preferred embodiment of the present invention cited below particularly, and cooperate appended graphicly, be described in detail below.
The technology effect that the present invention desired to reach is for solving prior art TFT-LCD when playing animation, it caused tears effect (tearing effect), and do not need to set up again storer in the driver that drives display panel, but and in the storer of practical application in the driver that drives display panel now, and following content will be to do one at the technical characterictic of this case and the effect desiring to reach to encyclopaedize, and consider and examine to offer this invention those skilled in the relevant art.
Fig. 4 is the reading/writing method according to the storer that preferred embodiment of the present invention illustrated.Please refer to Fig. 4, the reading/writing method of the storer of present embodiment comprises the following steps: at first, as described in step S401, in between the first phase, M the image input data that driver is exported are in regular turn in the write store, wherein this storer for example can be static RAM (SRAM), dynamic RAM (DRAM) or impact damper (buffer) ... etc., and M is a positive integer.Then, as described in step S403, between the first phase, when (M/2)+1 an image input data began in the write store, the odd number image that storer can begin to be output between the first phase and be write was imported data.
According to as can be known above-mentioned, not existing together with the maximum of the reading/writing method of prior art storer in the reading/writing method of the storer of present embodiment is to be: the writing of the storer of the writing of the storer of present embodiment, reading of data sequential and prior art, reading of data sequential are different.At first, in the writing of the storer of prior art, reading of data sequential for synchronously, also be storer while writing just reading of data immediately of data, but in the writing of the storer of present embodiment, reading of data sequential is asynchronous, also promptly when storer writes data on one side, (do not limit at this how much this section period is) after must postponing a period of time, just can one side reading of data.By this, postpones this section period cleverly according to above-mentioned, it can apply to so can solve the problem of tearing effect (tearingeffect) of prior art TFT-LCD in the storer in prior art drives the driver of display panel.
What deserves to be mentioned is that at this comprise at least between the above-mentioned first phase during N blank (blanking), and in this interregnum (Blanking), storer is reading of data not, wherein N is the integer more than or equal to 0.
Fig. 5 is the driving method according to the display panel that preferred embodiment of the present invention illustrated.Please refer to Fig. 5, the driving method of the display panel of present embodiment comprises the following steps: at first, as described in step S501, during first picture frame, M the image input data that driver is exported are in regular turn in the write store, and this storer for example can be static RAM (SRAM), dynamic RAM (DRAM) or impact damper (buffer) ... etc., wherein M is a positive integer.Then, as described in step S503, during first picture frame, when (M/2)+1 image input data began write store, storer can begin odd number image input data that output (also promptly reading) write to display panel during first picture frame.
In present embodiment, when storer finishes to write M image input data during first picture frame, and when beginning to write the 1st image input data during second picture frame after during first picture frame, storer can begin to be output in an even number image that is write during first picture frame and import data to display panel.In addition, during first picture frame, when storer finished to write M image input data, storer had finished to be output in all odd numbers image input data that write during first picture frame.
What deserves to be mentioned is earlier at this, during above-mentioned first picture frame with second picture frame during in comprise N interregnum (Blanking) at least, and in this interregnum (Blanking), storer is reading of data not, wherein N is the integer more than or equal to 0.
And for for the purpose of following explanation is convenient, be that the hypothesis storer is static RAM (SRAM) in present embodiment, and during first picture frame with second picture frame during in there is no interregnum (blanking) for example illustrates, but be not limited thereto at this.That is to say, the user can be according to actual demand, and change different storeies add a plurality of interregnums ((Blanking) (for example above-mentioned N is 1,2 ...) during first picture frame or in during second picture frame, and above-mentioned variable M is assumed to be 320 earlier at this, so in the described simpler and easy saying of step S501 be exactly: during first picture frame (frame), 320 images that driver is exported are imported data in regular turn in the write store.Then, be exactly in the described simpler and easy saying of step S503: during first picture frame, when the 161st image input data began write store, storer can begin to export the 1st, 3 ... an image input data is to display panel.
Afterwards, when storer finishes to write the 320th image input data during first picture frame, storer has finished to be output in all odd numbers image input data that write during first picture frame, also promptly export the 319th image input data to, and when beginning to write the 1st image input data during second picture frame after first picture frame, storer can begin to be output in write during first picture frame the 2nd, 4 ..., 320 images input data are to display panel.
In addition, according to spirit of the present invention, also can be during first picture frame with second picture frame during in adding one or more interregnums (blanking).Below will exemplify in not adding interregnum and the synoptic diagram that adds one or more interregnums during first picture frame with during second picture frame.
Fig. 5 A illustrate for present embodiment during first picture frame with second picture frame during in do not add the synoptic diagram of interregnum.Please refer to Fig. 5 A, can obviously find out in the synoptic diagram that is disclosed by Fig. 5 A, during first picture frame with second picture frame during in odd number the image input data O of the storer that is written into to import a data E with an even number image be continuous, but what deserves to be mentioned is, do not limit at this and just then to write an even number image input data E after will writing odd number image input data O earlier, that is to say, the user can write an even number image input data E according to actual demand earlier, then writes an odd number image input data O again.
Fig. 5 B illustrate into present embodiment during first picture frame with second picture frame during in add the synoptic diagram of an interregnum B.Please refer to Fig. 5 B, can obviously find out in the synoptic diagram that is disclosed by Fig. 5 B, during first picture frame with second picture frame during in add an interregnum B, it can be added between the odd number image input data O and an even number image input data E of the storer that is written into, also it can be added in during first picture frame with second picture frame during head or tail, and do not limit at this and just then to write an even number image input data E after will writing odd number image input data O earlier, that is to say, the user can write an even number image input data E according to actual demand earlier, then writes an odd number image input data O again.
Fig. 5 C illustrate into present embodiment during first picture frame with second picture frame during in add the synoptic diagram of a plurality of interregnum B.Please refer to Fig. 5 C, can obviously find out in the synoptic diagram that is disclosed by Fig. 5 C, during first picture frame with second picture frame during in add a plurality of interregnum B, for example for adding 4 interregnum B, it can be added between the odd number image input data O and an even number image input data E of the storer that is written into, it can be added in again between the odd number image input data O of the storer that is written into, and can be incorporated in again
During first picture frame with second picture frame during head or tail, but do not limit at this and just then to write an even number image input data E after will writing odd number image input data O earlier, that is to say, the user can write an even number image input data E according to actual demand earlier, then writes an odd number image input data O again.
So according to above-mentioned, the driving method of the display panel of present embodiment is different with the driving method of traditional display panel, it forms for the reading/writing method institute framework according to the storer of the foregoing description, so the driving method of display panel of utilization present embodiment in now, in the undersized display, can effectively solve the problem of tearing effect of old TFT-LCD.
Fig. 6 is the calcspar according to the display that preferred embodiment of the present invention illustrated.Please refer to Fig. 6, the display 600 of present embodiment for example can be Thin Film Transistor-LCD (TFT-LCD), and it comprises display panel 601, gate drivers 603, and driver 605.Wherein, the signal of video signal transmission mode of display panel 601 is the transmission mode of non-sequentiality, also be staggered (interlace) sweep signal, and has M bar (M is a positive integer) sweep trace (scan line) SL, it is the sweep signal of exporting according to gate drivers 603 (scansignal) and enabling, and the image input data that provided of corresponding reception driver 605.
In present embodiment, driver 605 comprises a storer, it for example can be static RAM (SRAM, do not illustrate), dynamic RAM (DRAM, do not illustrate) or impact damper (buffer, do not illustrate) ... etc., and this storer is during first picture frame, M the image input data that driver 605 is exported are written into wherein in regular turn, and during first picture frame, when (M/2)+1 an image input data began write store, storer can begin to be output in an odd number image that is write during first picture frame and import data to display panel 601.
In addition, when storer finishes to write M image input data during first picture frame, storer has finished to be output in all odd numbers image input data that write during first picture frame, and when beginning to write the 1st image input data during second picture frame after during first picture frame, storer can begin to be output in an even number image that is write during first picture frame and import data to display panel 601.
Generally speaking, with now when the processing procedure driver 605, it can be integrated in source electrode driver (source driver) and time schedule controller (timing controller) wherein, perhaps further also gate drivers 601 is integrated in the driver 605, but at this in order not want to obscure spirit of the present invention, do not explain the principle of work of driver 605 at this, and have common knowledge with this invention field and should know its principle and effect easily, so at this and no longer given unnecessary details.
And what deserves to be mentioned is, during the first sharp picture frame of this enforcement with second picture frame during in similarly comprise N interregnum (Blanking) at least, and in this interregnum (Blanking), storer is reading of data not, and wherein N is the integer more than or equal to 0.
In addition, in order to be illustrated more clearly in the mode that reads and writes data of above-mentioned driver 605 storer reservoirs, below will cooperate the relevant icon of memory read write data to come aid illustration, and the hypothesis storer is static RAM (SRAM) earlier, and during first picture frame with second picture frame during in there is no and be example during the blank (blanking), but be not limited thereto at this.That is to say that the user can be according to actual demand, and change different storeies add a plurality of interregnums (Blanking) (for example above-mentioned N is 1,2 ...) during first picture frame with second picture frame during in.
Fig. 7 illustrates and is the storer 701 in the driver 105 of present embodiment, when the signal of video signal transmission mode of the display panel 601 in display 600 adopts the transmission mode of interlace scanning signal, and the mode that the reads synoptic diagram during first picture frame.Please merge with reference to Fig. 6 and Fig. 7, the read mode of storer 701 in the driver 605 when the transmission mode of release of an interleave sweep signal is: at first, when writing 160 image inputs of the 1st image input data D_in_1_1 to the data D_in_1_160 of first picture frame in regular turn, the image that can't read strange figure place this moment immediately needs is imported data to display panel 601.
Then, when the storer 201 of the 161st the image input data D_in_1_161 that begins to write first picture frame to driver 605, will begin to read the 1st image input data D_out_1_1 of strange figure field this moment, that is to say, when continuing the storer 201 of 320 images inputs of the 162nd image input data D_in_1_161 to the data D_in_1_320 in driver 605 that writes first picture frame, can read the 3rd image input data D_out_1_3 of strange figure field in regular turn, the 5th image input data D_out_1_5, ..., and when writing the 320th image input data D_in_1_320 of first picture frame, can read the 319th image input data D_out_1_319 of strange figure field.
So according to as can be known above-mentioned, use the sequential that reads of delay memory 701 cleverly, promptly during first picture frame of present embodiment, can't produce prior art during first picture frame, import data D_out_1_3 at the 3rd image that reads strange figure field and begin to import the state generation that data D_out_1_319 end all can be the image input data of unknown (un-know) to the 319th image.
Fig. 8 illustrates and is the storer 701 in the driver 605 of present embodiment, when the signal of video signal transmission mode of the display panel 601 in display 600 adopts the transmission mode of interlace scanning signal, and the mode that the reads synoptic diagram during second picture frame.Please merge with reference to Fig. 6～Fig. 8, continue behind first picture frame, in the 1st the image input data D_in_2_1 that begins to write second picture frame when finishing to write the 160th image input data D_in_2_160, will finish to read all even numbers image input data that during first picture frame, write, also promptly read 320 image inputs of the 2nd image input data D_out_1_2 to the data D_out_1_320 of bigraph field.
Then, when during second picture frame, beginning to write the 161st image input data D_in_2_161, also can begin to read the 1st image input data D_out_2_1 of strange figure field during second picture frame, and be connected in the 162nd the image input data D that writes first picture frame during second picture frame) _ storer 201 of 320 images inputs of in_2_162 to the data D_in_2_320 in driver 605 time, can read the 3rd image input data D_out_2_3 of strange figure field in regular turn, the 5th image input data D_out_2_5, ..., and when writing the 320th image input data D_in_2_320 of second picture frame, can read the 319th image input data D_out_2_319 of strange figure field.
So according to as can be known above-mentioned, use the sequential that reads of delay memory 701 cleverly, promptly during second picture frame, can't produce prior art the 3rd image input data D_out_1_3 of strange figure field during residuing in first picture frame during second picture frame begins to the 319th image input data D_out_1_319, and so the practice can solve the problem of tearing effect (tearing effect) of prior art TFT-LCD, and in can the storer of practice in the driver that drives display panel now.
And what deserves to be mentioned is, in present embodiment, because delay memory 701 reads sequential cleverly, so if the display panel of present embodiment 601 adopts the signal of video signal transmission mode of interlace scanning signal, and adopt simultaneously under the condition of line counter-rotating (line inversion) display technique, can be because the practice that reads sequential of above-mentioned delay memory 701, begin to put on the interchange share voltage of shared electrode only in just need counter-rotating of each picture (frame) and cause, and be different from the prior art display panel if adopt the signal of video signal transmission mode of interlace scanning signal, and adopt simultaneously under the condition of line counter-rotating display technique, can all to reverse at each bar sweep trace because of the interchange share voltage that puts on shared electrode, and cause the power consumption (powerconsumption) of TFT-LCD integral body to promote.So what can know by inference is that the consumed power of display 600 integral body of present embodiment is compared significantly reduction with the consumed power of prior art TFT-LCD integral body many.
In addition, according to spirit of the present invention, also can be during first picture frame with second picture frame during in add a plurality of interregnums (blanking), and this practice has been stated clearly at the foregoing description icon 5A～5C, so also no longer given unnecessary details at this.
In sum, the present invention provides a kind of reading/writing method of storer, it goes for driving now in the storer (for example being SRAM) in the driver (driver) of display panel, and the reading/writing method of this storer can derive the driving method of display panel provided by the present invention, and is applied to will have in the display of the present invention following some advantage according to this driving method and discusses:
1. because the institute's image that writes input data can't export display panel immediately to during first picture frame, but after the image input data that write half during first picture frame, just begin to be output in an odd number image input data that write during this first picture frame, and during first picture frame, finish to write all images and import data, and when during second picture frame, beginning to write the 1st image input data, just begin to be output in an even number image that is write during first picture frame and import data to display panel, so the interior memory data of driver that drives display panel is read in utilization read-write sequence so cleverly, what not only can solve prior art TFT-LCD tears effect (tearing effect), and in simultaneously can the storer (for example be SRAM) of practice in the driver that drives display panel now.
2. because the driver of display panel provided by the present invention is that the driving method of utilization display panel of the present invention is in wherein, and display panel provided by the present invention and the display of using this display panel thereof also because of the driver that uses display panel of the present invention in wherein, so the total consumption power of the final display that presents of the present invention also can reduce greatly, and just at last when playing animation, the picture that it presented also all is accurate, watches to offer the user.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limiting the present invention, anyly has the knack of this skill person, without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking the accompanying Claim person of defining.
Claims (20)
1. the reading/writing method of a storer is characterized in that, this method comprises the following steps:
In between a first phase, M the image input data that a driver is exported write in the storer in regular turn, and wherein M is a positive integer; And
In between this first phase, when (M/2)+1 an image input data began to write in the described storer, this storer began to be output in an odd number image input data that write between this first phase.
2. the reading/writing method of storer as claimed in claim 1 is characterized in that, comprises N interregnum at least between the described first phase, and wherein N is the integer more than or equal to 0.
3. the reading/writing method of storer as claimed in claim 1 is characterized in that, described storer comprises a static RAM, a dynamic RAM or an impact damper.
4. the driving method of a display panel is characterized in that, this method comprises the following steps:
During one first picture frame, M the image input data that a driver is exported write in the storer in regular turn, and wherein M is a positive integer; And
During described first picture frame, when (M/2)+1 an image input data began to write described storer, this storer began to be output in an odd number image that is write during this first picture frame and imports data to described display panel.
5. the driving method of display panel as claimed in claim 4, it is characterized in that, when described storer finishes to write M image input data, and when beginning to write the 1st image input data during one second picture frame after during described first picture frame, this storer begins to be output in an even number image that is write during described first picture frame and imports data to described display panel.
6. the driving method of display panel as claimed in claim 5, it is characterized in that, during described first picture frame, when described storer finished to write M image input data, this storer was to have finished to be output in all odd numbers image input data that write during described first picture frame.
7. the driving method of display panel as claimed in claim 6 is characterized in that, during described first picture frame with described second picture frame during in comprise N interregnum at least, wherein N is the integer more than or equal to 0.
8. the driving method of display panel as claimed in claim 4 is characterized in that, described storer comprises a static RAM, a dynamic RAM or an impact damper.
9. the driver of a display panel is characterized in that, this driver comprises:
One storer, it is during one first picture frame, M the image input data that one driver is exported are written into wherein in regular turn, and during this first picture frame, when (M/2)+1 an image input data begin to write this storer, this storer begins to be output in an odd number image that is write during this first picture frame and imports data to described display panel, and wherein M is a positive integer.
10. the driver of display panel as claimed in claim 9, it is characterized in that, when described storer finishes to write M image input data, and when beginning to write the 1st image input data during one second picture frame after during described first picture frame, this storer begins to be output in an even number image that is write during this first picture frame and imports data to described display panel.
11. the driver of display panel as claimed in claim 10, it is characterized in that, during described first picture frame, when described storer finished to write M image input data, this storer was to have finished to be output in all odd numbers image input data that write during this first picture frame.
12. the driver of display panel as claimed in claim 11 is characterized in that, during described first picture frame with described second picture frame during in comprise N interregnum at least, wherein N is the integer more than or equal to 0.
13. the driver of display panel as claimed in claim 9 is characterized in that, described storer comprises a static RAM, a dynamic RAM or an impact damper.
14. a display is characterized in that, this display comprises:
One display panel; And
One driver comprises:
One storer, it is during one first picture frame, M the image input data that one driver is exported are written into wherein in regular turn, and during this first picture frame, when (M/2)+1 an image input data begin to write this storer, this storer begins to be output in an odd number image that is write during this first picture frame and imports data to described display panel, and wherein M is a positive integer.
15. display as claimed in claim 14, it is characterized in that, when described storer finishes to write M image input data, and when beginning to write the 1st image input data during one second picture frame after during described first picture frame, this storer begins to be output in an even number image that is write during this first picture frame and imports data to described display panel.
16. display as claimed in claim 15, it is characterized in that, during described first picture frame, when described storer finished to write M image input data, this storer was to have finished to be output in all odd numbers image input data that write during this first picture frame.
17. display as claimed in claim 16 is characterized in that, during described first picture frame with described second picture frame during in comprise N interregnum at least, wherein N is the integer more than or equal to 0.
18. display as claimed in claim 14 is characterized in that, described storer comprises a static RAM, a dynamic RAM or an impact damper.
19. display as claimed in claim 14 is characterized in that, described display panel comprises a liquid crystal display panel of thin film transistor or a display panels.
20. display as claimed in claim 14 is characterized in that, described display comprises a Thin Film Transistor-LCD or a LCD.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710006550 CN101017655A (en) | 2007-02-02 | 2007-02-02 | Driver for driving the display panel, its reading and writing method of the memory and display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710006550 CN101017655A (en) | 2007-02-02 | 2007-02-02 | Driver for driving the display panel, its reading and writing method of the memory and display |
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| CN 200710006550 Pending CN101017655A (en) | 2007-02-02 | 2007-02-02 | Driver for driving the display panel, its reading and writing method of the memory and display |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103377638A (en) * | 2012-04-28 | 2013-10-30 | 华为技术有限公司 | Method and device for rapid signal response |
| CN105096872A (en) * | 2015-08-13 | 2015-11-25 | 深圳市华星光电技术有限公司 | Liquid crystal display starting method |
| CN111063291A (en) * | 2019-12-26 | 2020-04-24 | Tcl华星光电技术有限公司 | Drive chip, control board, and drive method for control board |
-
2007
- 2007-02-02 CN CN 200710006550 patent/CN101017655A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103377638A (en) * | 2012-04-28 | 2013-10-30 | 华为技术有限公司 | Method and device for rapid signal response |
| US9160895B2 (en) | 2012-04-28 | 2015-10-13 | Huawei Technologies Co., Ltd. | Method and apparatus for quickly responding to signal |
| CN103377638B (en) * | 2012-04-28 | 2015-12-16 | 华为技术有限公司 | A kind of method of quick response signal and device |
| CN105096872A (en) * | 2015-08-13 | 2015-11-25 | 深圳市华星光电技术有限公司 | Liquid crystal display starting method |
| CN111063291A (en) * | 2019-12-26 | 2020-04-24 | Tcl华星光电技术有限公司 | Drive chip, control board, and drive method for control board |
| CN111063291B (en) * | 2019-12-26 | 2023-01-10 | Tcl华星光电技术有限公司 | Drive chip, control board, and drive method for control board |
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