CN101345029B - Crystal display device with void signal wire and driving method thereof - Google Patents
Crystal display device with void signal wire and driving method thereof Download PDFInfo
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- CN101345029B CN101345029B CN2007101290730A CN200710129073A CN101345029B CN 101345029 B CN101345029 B CN 101345029B CN 2007101290730 A CN2007101290730 A CN 2007101290730A CN 200710129073 A CN200710129073 A CN 200710129073A CN 101345029 B CN101345029 B CN 101345029B
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Abstract
The invention provides a liquid crystal display device with virtual signal wires, and a driving method of the LCD device, in particular to an LED device with the virtual signal wires, and a driving method of the LED device; when an LED panel is turned by 180 DEG for use, the picture can still be displayed normally and a plurality of previous line data signals are not lost. The LED device comprises a plurality of pixels which are arranged into a plurality of line and rows in the form of a matrix array, a plurality of data signal wires, each of which is respectively arranged at the first side of the pixels in each line and electrically connected with each pixel in the corresponding line, a plurality of scanning signal wires, each of which is respectively arranged at the first side of the pixels of each line and is electrically connected with each pixel in the corresponding row, at least one virtual scanning signal wire which is arranged at the external-most side of the matrix array, a data driver which is used for driving a plurality of the data signal wires, and a time sequence controller which is electrically connected with the data driver and the scanning driver and comprises at least one memory; when a data input excitation signal is converted into a high-voltage potential, the time sequence controller sends out a starting pulse signal so as to lead the scanning driver to send a scanning wire signal corresponding to the virtual data signal wire and memorizes an image data into the memory; when the virtual scanning signal wires completes the scanning corresponding to the scanning wire signal, the time sequence controller drives the LED device by the data signal wire.
Description
Invention field
The present invention relates to a kind of liquid crystal indicator and driving method thereof with void signal wire; And relate in particular to a kind of liquid crystal indicator and driving method thereof with void signal wire; When 180 ° of display panels upsets are used; Picture is normally shown, and can not lose some the line data-signals in foremost.
Technical background
See also Fig. 1, be the floor map of known liquid crystal indicator.As shown in Figure 1, this liquid crystal indicator 100 comprises a display panels 110, and defines a non-active display area 120 and an active display area 130 on it.Have a plurality of pixels 160 of lining up a matrix array in this active display area 130, a plurality of scan signal lines 170 form and a plurality of data signal lines 180 form along the stringer of this pixel 160 along the line of this pixel 160; How sweep signal on a plurality of scan signal lines 170 writes pixel 160 in order to the data of controlling on a plurality of data signal lines 180.One printed circuit board (PCB) has time schedule controller (Timing controller) 190a (shown in the 2nd, 3 figure); In order to control data driver 140 and scanner driver 150, make this data driver 140 and scanner driver 150 drive the pixel 160 in this active display area 130.
As shown in Figure 2; Be the display panels of a resolution 1280*800 pixel, each pixel comprises redness, green and blue three subpixels, and reality needs 3840 data signal lines in visible area; But because this three subpixels is positioned at same listing, so need 800 scan signal lines.These 3840 data signal lines, the data driver that needs enough numbers comes data signal.General in the technology of LCD, all need prepare the data driver of same channels number, so that force down the charging cost.With at present common on the market be the data driver of 642 passages (the corresponding data signal line of each passage), need the data driver of 6 642 passages to drive this 3840 data signal lines at least.In Fig. 2; The last 642 all passages of data driver 141a～145a all correspond to data signal line; But data driver 146a then only needs to use 630 passages to correspond to data signal line; And 12 last passages must not correspond to the data signal line in the visible area, claim that these 12 passages are dummy data signal wire (dummy data lines) DDL, this dummy data signal wire not data signal to the data signal line of visible area.Same, 800 scan signal lines in this example, the scanner driver that also needs enough numbers transmits sweep signal.And general in the technology of LCD, also need prepare the scanner driver of same channels number, so that force down the charging cost.With at present common on the market be the scanner driver of 270 passages (the corresponding scan signal line of each passage), need the scanner driver of 3 270 passages to drive this 800 scan signal lines at least.In Fig. 2; Scanner driver 151a, the last 270 all passages of 152a all correspond to scan signal line; But scanner driver 153a then only needs to use 260 passages to correspond to scan signal line; And 10 last passages must not correspond to the scan signal line in the visible area, claim that these 10 passages are empty scan signal line (dummy scan lines) DSL, and this empty scan signal line does not transmit sweep signal to the scan signal line of visible area.
When display panels uses down normal, do not have any problem generation.See also Fig. 3, the floor map when being reversed 180 ° of uses for known display panels.As shown in Figure 3; In case yet display panels is reversed 180 ° when using; Then being located at this drive IC 146a (data driver, data driver) only utilizes its corresponding 630 data signal lines to drive the pixel in the active display area in this liquid crystal indicator.It is dummy data signal wire (dummy data lines) DDL that unnecessary some data signal lines are wherein arranged, and in other words, these unnecessary some data signal lines are not carried out the transmission of data-signal.Under the situation of not liquid opaque LCD panel design, according to general type of drive, picture will be lost top some line data-signals.
Likewise; When in case display panels is reversed 180 ° of uses; Keep under the basipetal situation in scan mode, if scanner driver (scan driver) 153a only utilizes its corresponding 260 scan signal lines to drive the pixel in the active display area in this liquid crystal indicator.Wherein unnecessary some scan signal lines are empty scan signal line (dummy scan lines) DSL, and in other words, these unnecessary some data signal lines are not carried out the transmission of sweep signal.Under the situation of liquid opaque LCD panel array design not, according to general type of drive, picture will be lost top some line data-signals.
See also Fig. 4 a, be known time schedule controller block schematic diagram.Shown in Fig. 4 a, this time schedule controller (Timing Controller) 190a comprises a Low Voltage Differential Signal receiving circuit (LVDS Receiver) 191, one storer interface controllor (EEPROM Interface Controller) 192, one memory cell (LUT/Register) 193, overdrive algorithm processor 194, a sequential control module 195, a low-swing differential signal transfer circuit (RSDS Transmitter) 196 and one picture frame impact damper (frame buffer) 197.When this Low Voltage Differential Signal receiving circuit (LVDS Receiver) 191 receives a low voltage differential data-signal LVDS DATA and a clock signal CK, produce an output signal and be sent to this algorithm processor 194 of overdriving.This storer interface controllor (EEPROM Interface Controller) 192 responsible data that store in the eeprom memory that read from the outside; And be stored into the internal memory unit (LUT/Register) 193 of this time schedule controller (Timing Controller) 190a, and this memory cell (LUT/Register) 193 is responsible for storing the needed data of algorithm of overdriving.Produce control signal by this algorithm processor 194 of overdriving and control an one scan driver control unit 195a and a data driver control module 195b in this timing control unit 195 respectively.This scanner driver control module 195a produces a clock signal CKV and pulse signal STV at the beginning respectively.And data driver control module 195b transmits signals to this low-swing differential signal transfer circuit (RSDS Transmitter) 196; After receiving data input enable signal DE; Then this low-swing differential signal transfer circuit (RSDS Transmitter) 196 is exported this image data DATA, and wherein this data input enable signal DE by external system (for example: display card) offer this time schedule controller (Timing Controller) 190a.
See also Fig. 4 b, when being reversed 180 ° of uses for display panels, the control signal sequential chart of time schedule controller (Timing Controller) 190a, data driver, scanner driver.Wherein, DE representative data input enable signal; STV representative beginning pulse signal is in order to open the beginning scanner driver; CKV represents clock signal, in order to the sequential of gated sweep driver; DATA represents image data; SDMl and SDM2 represent empty scanning-line signal of an article one and the empty scanning-line signal of a second respectively; S1 represents one first scanning-line signal; D1～D800 represent to send the data of S1～S800 to.Shown in 4a, 4b figure; (for example: when this data input enable signal DE that display card) is provided became the accurate position of a high voltage, then this time schedule controller (Timing Controller) 190a just can activate this image data DATA and send into this data driver when external system.Begin pulse signal STV and make this scanner driver see this article one scanning-line signal SDMl, this second scanning-line signal SDM2 one by one off when this time schedule controller (Timing Controller) 190a sees this off ..., the tenth scanning-line signal SDM10; This moment, this image data DATA saw off according to each pixel data one by one; But because the empty scan signal line (dummy scan lines) or the cause of dummy data signal wire (dummy data lines); Cause picture will lose top some line data-signals, shown in Fig. 4 b.
Therefore, the present invention invents out " the liquid crystal indicator and the driving method thereof with void signal wire " of this case in view of the disappearance of known technology.
Summary of the invention
Fundamental purpose of the present invention is that a kind of liquid crystal indicator and driving method thereof with void signal wire is provided, and when 180 ° of display panels upsets are used, picture is normally shown, and can not lose some the line data-signals in foremost.
Another object of the present invention is that a kind of liquid crystal indicator and driving method thereof with void signal wire is provided; Scanner driver (scan driver) if liquid crystal indicator does not reverse before 180 ° of uses has unnecessary scan signal line; That is empty scan signal line (dummy scan lines); When 180 ° of display panels upsets are used; Under the situation of liquid opaque LCD panel array design not, picture is normally shown, and can not lose the data-signal of some the sweep traces in foremost.
Another object of the present invention is that a kind of liquid crystal indicator and driving method thereof with void signal wire is provided; Data driver (data driver) if liquid crystal indicator does not reverse before 180 ° of uses has unnecessary data signal line; That is dummy data signal wire (dummy data lines); When 180 ° of display panels upsets are used; Under the situation of liquid opaque LCD panel array design not, picture is normally shown, and can not lose the data-signal of some the data lines in foremost.
Another object of the present invention is that a kind of liquid crystal indicator and driving method thereof with void signal wire is provided; Article one line data at each picture have been delivered to liquid crystal indicator; Before yet data driver (data driver) is not exported as yet; Earlier see special control signal off by time schedule controller (timing controller); Let scanner driver (scan driver) scan unnecessary scan signal line earlier, that is empty scan signal line (dummy scan lines), make the data-signal of article one line correctly to export at article one data signal line.
Another object of the present invention is that a kind of liquid crystal indicator and driving method thereof with void signal wire is provided; Article one line data at each picture have been delivered to liquid crystal indicator; Before yet data driver (data driver) is not exported as yet; Earlier see at the beginning pulse signal (start pulse) off and preset data-signal is given unnecessary data signal line by time schedule controller (timing controller); That is dummy data signal wire (dummy data lines), and storing some line data-signals, the data-signal that is deferred to article one line can correctly be exported at article one data signal line.
For reaching above-mentioned purpose, the present invention provides a kind of display device, comprising: a plurality of pixels, and it is arranged in plural number row and several column with the matrix array form; A plurality of data signal lines, each data signal line are arranged at a first side of each row pixel respectively, and are electrically connected with each pixel in its corresponding row; A plurality of scan signal lines, each scan signal line are arranged at a first side of each row pixel respectively, and are electrically connected with each pixel in its respective column; At least one empty scan signal line is arranged at this matrix array outermost; One data driver is used for driving this a plurality of data signal lines; The one scan driver is used for driving this a plurality of scan signal lines and should the void scan signal line; And time schedule controller; Be electrically connected this data driver and this scanner driver; Comprise at least one storer; When data inputs enable signal became the accurate position of a high voltage, this time schedule controller is seen pulse signal at the beginning off caused this scanner driver to see corresponding scanning-line signal that should the void scan signal line off, and deposits an image data in this storer; By the time should the void scan signal line accomplish the scanning of corresponding this scanning-line signal, drive this liquid crystal indicator via this data signal line by this time schedule controller.
The present invention also provides a kind of display device, comprising: a plurality of pixels, and it is arranged in plural number row and several column with the matrix array form; A plurality of data signal lines, each data signal line are arranged at a first side of each row pixel respectively, and are electrically connected with each pixel in its corresponding row; A plurality of scan signal lines, each scan signal line are arranged at a first side of each row pixel respectively, and each pixel in the corresponding ranks with it is electrically connected; At least one empty scan signal line is arranged at said matrix array outermost; One data driver is used for driving said a plurality of data signal lines; The one scan driver is used for driving said a plurality of scan signal lines and said empty scan signal line; And time schedule controller; Be electrically connected said data driver and said scanner driver; Control at the beginning pulse signal in advance a specified time interval see off; After making said scanner driver accomplish said empty sweep signal line sweep, the said time schedule controller of data input enable signal activation drives said liquid crystal indicator by said data signal line.
The present invention also provides a kind of display device, comprising: a plurality of pixels, and it is arranged in plural number row and several column with the matrix array form; A plurality of data signal lines, each data signal line are arranged at a first side of each row pixel respectively, and are electrically connected with each pixel in its corresponding row; A plurality of scan signal lines, each scan signal line are arranged at a first side of each row pixel respectively, and are electrically connected with each pixel in its respective column; At least one empty scan signal line is arranged at said matrix array outermost; One data driver is used for driving said a plurality of data signal lines; The one scan driver is used for driving said a plurality of scan signal lines and said empty scan signal line; And time schedule controller; Be electrically connected said data driver and said scanner driver; Utilize the said time schedule controller of data inputs enable signal activation, said time schedule controller is seen pulse signal at the beginning off, and the frequency of controlling a clock signal is greater than original normal running frequency; Make said scanner driver in a specific period, accomplish said empty sweep signal line sweep, drive said liquid crystal indicator by said time schedule controller via said data signal line again.
The present invention also provides a kind of display device, comprising: a plurality of pixels, and it is arranged in plural number row and several column with the matrix array form; A plurality of data signal lines, each data signal line are arranged at a first side of each row pixel respectively, and are electrically connected with each pixel in its corresponding row; A plurality of scan signal lines, each scan signal line are arranged at a first side of each row pixel respectively, and are electrically connected with each pixel in its respective column; At least one empty scan signal line is arranged at said matrix array outermost; One data driver is used for driving said a plurality of data signal lines; The one scan driver is used for driving said a plurality of scan signal lines and said empty scan signal line; And time schedule controller; Be electrically connected said data driver and said scanner driver; Controlling at the beginning pulse signal sees off in advance; Said scanner driver is had after grace time accomplishes the scanning of empty scan signal line, and the said time schedule controller of data input enable signal activation drives said liquid crystal indicator via said data signal line.
The present invention also provides a kind of display packing; Be applied to a display device; Said display device comprises a plurality of pixels, a plurality of data signal lines, a plurality of scan signal lines, at least one empty scan signal line, a data driver, one scan driver and time schedule controller; Said time schedule controller comprises at least one storer; Comprise the following steps: that when data inputs enable signal becomes the accurate position of a high voltage said time schedule controller sees at the beginning that pulse signal causes said scanner driver to see the scanning-line signal of corresponding said empty scan signal line off off; And deposit an image data in said storer, wait until that said empty scan signal line is accomplished the scanning of corresponding said scanning-line signal after, drive said liquid crystal indicator by said time schedule controller via said data signal line.
The present invention also provides a kind of display packing; Be applied to a display device; Said display device comprises a plurality of pixels, a plurality of data signal lines, a plurality of scan signal lines, at least one empty scan signal line, a data driver, one scan driver and time schedule controller, comprise the following steps: to control at the beginning pulse signal in advance a specified time interval see off; And after making said scanner driver accomplish said empty sweep signal line sweep, the said time schedule controller of data input enable signal activation drives said liquid crystal indicator by said data signal line.
The present invention also provides a kind of display packing; Be applied to a display device; Said display device comprises a plurality of pixels, a plurality of data signal lines, a plurality of scan signal lines, at least one empty scan signal line, a data driver, one scan driver and time schedule controller; Comprise the following steps: to utilize the said time schedule controller of data input enable signal activation; Said time schedule controller is seen pulse signal at the beginning off: the frequency of controlling a clock signal makes said scanner driver in a specific period, accomplish said empty sweep signal line sweep greater than original normal running frequency; And drive said liquid crystal indicator via said data signal line by said time schedule controller.
The present invention also provides a kind of display packing; Be applied to a display device; Said display device comprises a plurality of pixels, a plurality of data signal lines, a plurality of scan signal lines, at least one empty scan signal line, a data driver, one scan driver and time schedule controller; Comprise the following steps: to control at the beginning pulse signal and see off in advance, make said scanner driver have the scanning that grace time is accomplished empty scan signal line; And the said time schedule controller of a data input enable signal activation drives said liquid crystal indicator via said data signal line.
The present invention also provides a kind of display packing; Be applied to a display device; Said display device comprises a plurality of pixels, a plurality of data signal lines, at least one dummy data signal wire, a plurality of scan signal lines, a data driver, one scan driver, time schedule controller and at least one storer; Comprise the following steps: to produce pulse signal at the beginning, the said time schedule controller of activation receives the pixel data of an image data when data input enable signal becomes the accurate position of a high voltage; The pixel data of said image data is stored at least one storer; And the pixel data that said time schedule controller output is preset is exported by said storer the pixel data of said image data to behind the said dummy data signal wire via said data signal line.
Through with following diagram and detailed description, can more in depth understand this case.
Description of drawings
Fig. 1 is the floor map of known liquid crystal indicator;
Fig. 2 is known floor map with liquid crystal indicator of void signal wire;
Floor map when Fig. 3 is reversed 180 ° of uses for known display panels;
Fig. 4 a is known time schedule controller block schematic diagram;
Fig. 4 b is that display panels is reversed 180 ° when using, the control signal sequential chart of time schedule controller (Timing Controller) 190a, data driver, scanner driver;
Fig. 5 a is the time schedule controller block schematic diagram of this case first preferred embodiment;
Fig. 5 b is the liquid crystal display apparatus driving circuit synoptic diagram of this case first preferred embodiment;
Fig. 6 is the liquid crystal display apparatus driving circuit synoptic diagram of this case second preferred embodiment;
Fig. 7 a is the time schedule controller block schematic diagram of this case the 3rd preferred embodiment;
Fig. 7 b is the liquid crystal display apparatus driving circuit synoptic diagram of this case the 3rd preferred embodiment;
Shown in Figure 8 for the liquid crystal display apparatus driving circuit synoptic diagram of this case the 4th preferred embodiment;
Shown in Figure 9 for the liquid crystal display apparatus driving circuit synoptic diagram of this case the 5th preferred embodiment;
Figure 10 is for being known in the floor map of the liquid crystal indicator with dummy data line under normal scan (Normal Scan) situation;
Figure 11 for this case the 6th preferred embodiment when display panels is reversed 180 ° of whens uses, utilize the liquid crystal display apparatus driving circuit of this case the 5th preferred embodiment to drive the floor map of the liquid crystal indicator of liquid crystal panel.
[main element symbol description]
100 liquid crystal indicators
110 display panels
120 non-active display area
130 active display area
140 data drivers
141a, 142a, 143a, 144a, 145a, 146a data driver
150 scanner drivers
151a, 152a, 153a scanner driver
160 pixels
170 scan signal lines
180 data signal lines
190 printed circuit board (PCB)s
190a time schedule controller (Timing controller)
CK, CKV clock signal
DE data input enable signal
The DATA image data
Patch1, Patch2, Patch3, the preset pixel data of Patch4
The input of PDI pixel data
RGB1, RGB2, RGB3 pixel data
SDM1 article one scanning-line signal
SDM2 second scanning-line signal
The tenth scanning-line signal of SDM10
STV begins pulse signal (start pulse)
S1, S2 data signal line
The data output of TDO time schedule controller
200 liquid crystal indicators
210 display panels
240 data drivers
241a, 242a, 243a, 244a, 245a, 246a data driver
250 scanner drivers
251a, 252a, 253a scanner driver
290a time schedule controller (Timing controller)
The CKV clock signal
DE data input enable signal
The DATA image data
Patch1, Patch2, Patch3, the preset pixel data of Patch4
SDM1 article one scanning-line signal
SDM2 second scanning-line signal
The tenth scanning-line signal of SDM10
STHA, STHB begin pulse signal (start pulse)
S1, S2 data signal line
Embodiment
Be display packing and the display of describing display of the present invention, below use specific embodiment that it is described, but interest field of the present invention be not limited to following embodiment.
See also Fig. 5 a, be the time schedule controller block schematic diagram of this case first preferred embodiment.Shown in Fig. 5 a, this time schedule controller (Timing Controller) 190a comprises a Low Voltage Differential Signal receiving circuit (LVDS Receiver) 191, one storer interface controllor (EEPROM Interface Controller) 192, one memory cell (LUT/Register) 193, overdrive algorithm processor 194, a sequential control module 195, a low-swing differential signal transfer circuit (RSDS Transmitter) 196 and one picture frame impact damper (frame buffer) 197.When this Low Voltage Differential Signal receiving circuit (LVDS Receiver) 191 receives a low voltage differential data-signal LVDS DATA and a clock signal CK, produce an output signal and be sent to this algorithm processor 194 of overdriving.This storer interface controllor (EEPROM Interface Controller) 192 responsible data that store in the eeprom memory that read from the outside; And be stored into the internal memory unit (LUT/Register) 193 of this time schedule controller (Timing Controller) 190a, this memory cell (LUT/Register) 193 is responsible for storing the needed data of algorithm of overdriving.Control signal by this algorithm processor 194 of overdriving produces is controlled an one scan driver control unit 195a and a data driver control module 195b in this timing control unit 195 respectively.This scanner driver control module 195a produces a clock signal CKV and pulse signal STV at the beginning respectively.And data driver control module 195b transmits signals to this low-swing differential signal transfer circuit (RSDS Transmitter) 196; After receiving data input enable signal DE; Then this low-swing differential signal transfer circuit (RSDS Transmitter) 196 is exported this image data DATA, and wherein this data input enable signal DE by external system (for example: display card) offer this time schedule controller (Timing Controller) 190a.
It is inner in this data driver control module 195b at this time schedule controller (Timing Controller) 190a linear memory (line memory) 195b1 to be set.This image data DATA is deposited one by one in linear memory (line memory) 195b1 of this time schedule controller (Timing Controller) 190a earlier according to each pixel data.By the time should void scan signal line (dummy scan lines) have accomplished the scanning of this scanning-line signal, begun this moment correctly to drive the pixel in the active display area in this liquid crystal indicator by this data signal line by this time schedule controller (Timing Controller) 190a.
Please refer to shown in Fig. 5 b, be the liquid crystal display apparatus driving circuit synoptic diagram of this case first preferred embodiment.Display panels with resolution 1280*800 pixel is example, and is as shown in Figure 2, supposes that each data driver has 642 passages, and each scanner driver has 270 passages.This data driver 141a, 142a, 143a, 144a, 145a utilize its passage that data-signal is delivered to 642 data signal lines on the panel to drive the pixel in the active display area in this liquid crystal indicator.And this scanner driver 151a, 152a utilize its passage that sweep signal is delivered to 270 scan signal lines on the panel to drive the pixel in the active display area in this liquid crystal indicator.Scanner driver 153a only utilizes its corresponding 260 scan signal lines to drive the pixel in the active display area in this liquid crystal indicator.Wherein 10 scan signal lines are empty scan signal line (dummy scan lines), and in other words, these 10 scan signal lines are not carried out the transmission of sweep signal.
Shown in Fig. 5 a, 5b; Because the loss of some the line data-signals in foremost of empty scan signal line (the dummy scan lines) picture that causes, so the present invention is provided with linear memory (line memory) 195b1 more than at least 10 in this data driver control module 195b inside at this time schedule controller (Timing Controller) 190a in order to avoid.
(for example: when this data input enable signal DE that display card) is provided became the accurate position of a high voltage, then this time schedule controller (Timing Controller) 190a saw this off and begins pulse signal (start pulse) STV and make this scanner driver see this article one scanning-line signal SDM1, this second scanning-line signal SDM2 one by one off when external system ..., the tenth scanning-line signal SDM10.This moment, this image data DATA deposited linear memory (line memory) 195b1 of this time schedule controller (Timing Controller) 190a one by one earlier in according to each pixel data at preceding 10 scanning-line signals.By the time should void scan signal line (dummy scan lines) have accomplished the scanning of this scanning-line signal; Begin by this time schedule controller (Timing Controller) 190a correctly by this data signal line S1, S2 this moment ..., drive the pixel in the active display area in this liquid crystal indicator.Even therefore when 180 ° of display panels upsets are used, picture is normally shown, and can not lose some the line data-signals in foremost.
In other words; Article one line data at each picture have been delivered to liquid crystal indicator; Yet data driver (data driver) is not seen special control signal off by time schedule controller (timing controller) earlier before exporting as yet, lets scanner driver (scan driver) scan unnecessary scan signal line earlier; That is empty scan signal line (dummy scan lines), make article one line data correctly when scanning the first row pixel, to export.
See also shown in Figure 6ly, be the liquid crystal display apparatus driving circuit synoptic diagram of this case second preferred embodiment.Be example as aforementioned display panels with resolution 1280*800 pixel, as shown in Figure 1, suppose that each data driver has 642 data signal lines, each scanner driver has 270 passages.This data driver 141a, 142a, 143a, 144a, 145a utilize its passage that data-signal is delivered to 642 data signal lines on the panel to drive the pixel in the active display area in this liquid crystal indicator.And this scanner driver 151a, 152a utilize its passage that sweep signal is delivered to 270 scan signal lines on the panel to drive the pixel in the active display area in this liquid crystal indicator.Scanner driver 153a only utilizes its corresponding 260 scan signal lines to drive the pixel in the active display area in this liquid crystal indicator.Wherein 10 scan signal lines are empty scan signal line (dummy scan lines), and in other words, these 10 scan signal lines are not carried out the transmission of sweep signal.
As shown in Figure 6; For avoiding loss because of some the line data-signals in foremost of empty scan signal line (the dummy scan lines) picture that causes; Therefore the present invention utilize one in advance scanning technique (Prediction Scan) reach picture and normally show; Even when 180 ° of display panels upsets are used, also can not lose some the line data-signals in foremost.
The horizontal scanning quiescent interval (V-blanking period) of supposing this display panels is 23 time intervals that scanning-line signal is required; Then this in advance scanning technique (Prediction Scan) control this begin pulse signal STV in advance 10 required time intervals of scanning-line signal see off, make this scanner driver see this article one scanning-line signal SDM1, this second scanning-line signal SDM2 one by one off ..., the tenth scanning-line signal SDM10.At preceding 10 empty scan signal lines (dummy scan lines) SDM1, SDM2 ..., after SDM10 accomplished scanning; This moment, this data input enable signal DE this time schedule controller of activation (Timing Controller) 190a correctly continued to scan first row; See correct data simultaneously off and give this data driver (data driver), drive the pixel in the active display area in this liquid crystal indicator.When this enable signal DE became the accurate position of a high voltage this time schedule controller of activation (Timing Controller) 190a, then this time schedule controller (Timing Controller) 190a exported this image data DATA.Even therefore when 180 ° of display panels upsets are used, picture is normally shown, and can not lose some the line data-signals in foremost.In other words; This in advance scanning technique (Prediction Scan) estimate this in advance and begin the moment that pulse signal STV need see off; See this earlier off in this horizontal scanning quiescent interval (V-blanking period) and begin pulse signal STV; After making that empty scan signal line (dummy scan lines) is accomplished scanning; When this enable signal DE became the accurate position of a high voltage this time schedule controller of activation (Timing Controller) 190a, then this time schedule controller (Timing Controller) 190a exported this image data DATA.This in advance in the scanning technique (Prediction Scan) this clock signal CKV do not stop.
See also Fig. 7 a, be the time schedule controller block schematic diagram of this case the 3rd preferred embodiment.Shown in Fig. 7 a, this time schedule controller (Timing Controller) 190a comprises a Low Voltage Differential Signal receiving circuit (LVDS Receiver) 191, one storer interface controllor (EEPROM Interface Controller) 192, one memory cell (LUT/Register) 193, overdrive algorithm processor 194, a sequential control module 195, a low-swing differential signal transfer circuit (RSDS Transmitter) 196 and one picture frame impact damper (frame buffer) 197.When this Low Voltage Differential Signal receiving circuit (LVDS Receiver) 191 receives a low voltage differential data-signal LVDS DATA and a clock signal CK, produce an output signal and be sent to this algorithm processor 194 of overdriving.This storer interface controllor (EEPROM Interface Controller) 192 responsible data that store in the eeprom memory that read from the outside; And be stored into the internal memory unit (LUT/Register) 193 of this time schedule controller (Timing Controller) 190a, and this memory cell (LUT/Register) 193 is responsible for storing the needed data of algorithm of overdriving.Control signal by this algorithm processor 194 of overdriving produces is controlled an one scan driver control unit 195a and a data driver control module 195b in this timing control unit 195 respectively.This scanner driver control module 195a produces a clock signal CKV and pulse signal STV at the beginning respectively.
Wherein this scanner driver control module 195a also comprises a clock adjustment unit 195al; Utilize the frequency of this clock signal CKV of this clock adjustment unit 195al adjustment; Make empty scan signal line (dummy scan lines) pass through this time schedule controller (Timing Controller) 190a correctly by this data signal line S1, S2 ..., drive the pixel in the active display area in this liquid crystal indicator.And data driver control module 195b transmits signals to this low-swing differential signal transfer circuit (RSDS Transmitter) 196; After receiving data input enable signal DE, then this low-swing differential signal transfer circuit (RSDS Transmitter) 196 is exported this image data DATA.
See also shown in Fig. 7 b, be the liquid crystal display apparatus driving circuit synoptic diagram of this case the 3rd preferred embodiment.Be example as aforementioned display panels with resolution 1280*800 pixel, as shown in Figure 1, suppose that each data driver has 642 passages, each scanner driver has 270 passages.This data driver 141a, 142a, 143a, 144a, 145a utilize its passage that data-signal is delivered to 642 data signal lines on the panel to drive the pixel in the active display area in this liquid crystal indicator.And this scanner driver 151a, 152a utilize its passage that sweep signal is delivered to 270 scan signal lines on the panel to drive the pixel in the active display area in this liquid crystal indicator.Scanner driver 153a only utilizes its corresponding 260 scan signal lines to drive the pixel in the active display area in this liquid crystal indicator.Wherein 10 scan signal lines are empty scan signal line (dummy scan lines), and in other words, these 10 scan signal lines are not carried out the transmission of sweep signal.
Shown in Fig. 7 a, 7b; For avoiding loss because of some the line data-signals in foremost of empty scan signal line (the dummy scan lines) picture that causes; Therefore the present invention utilizes jump scanning technology (Jump Scan) to reach picture normally to show; Even when 180 ° of display panels upsets are used, also can not lose some the line data-signals in foremost.
When this jump scanning technology (Jump Scan) is utilized first this enable signal DE this time schedule controller of activation (Timing Controller) 190a; This time schedule controller (Timing Controller) 190a sees this off and begins pulse signal STV; Thereby the frequency of controlling this clock signal CKV is greater than original normal running frequency; If 10 empty scan signal lines (dummy scan lines); Then the frequency of this clock signal CKV must be greater than original ten times; See this article one scanning-line signal SDM1, this second scanning-line signal SDM2 off in the shortest time as early as possible ..., the tenth scanning-line signal SDM10, make and accomplish scanning in scanning line period (cycle) of preceding 10 empty scan signal lines (dummy scan lines).Begin by this time schedule controller (Timing Controller) 190a correctly by this data signal line S1, S2 this moment ..., drive the pixel in the active display area in this liquid crystal indicator.Even therefore when 180 ° of display panels upsets are used, picture is normally shown, and can not lose some the line data-signals in foremost.
See also shown in Figure 8ly, be the liquid crystal display apparatus driving circuit synoptic diagram of this case the 4th preferred embodiment.Be example as aforementioned display panels with resolution 1280*800 pixel, as shown in Figure 1, suppose that each data driver has 642 passages, each scanner driver has 270 passages.This data driver 141a, 142a, 143a, 144a, 145a utilize its passage that data signal line is delivered to 642 data signal lines on the panel to drive the pixel in the active display area in this liquid crystal indicator.And this scanner driver 151a, 152a utilize its passage that sweep signal is delivered to 270 scan signal lines on the panel to drive the pixel in the active display area in this liquid crystal indicator.Scanner driver 153a only utilizes its corresponding 260 scan signal lines to drive the pixel in the active display area in this liquid crystal indicator.Wherein 10 scan signal lines are empty scan signal line (dummy scan lines), and in other words, these 10 scan signal lines are not carried out the transmission of sweep signal.
As shown in Figure 8; For avoiding loss because of some the line data-signals in foremost of empty scan signal line (the dummy scan lines) picture that causes; Therefore the present invention utilizes a time-out interval scanning technique (Scan in Blanking) to reach picture normally to show; Even when 180 ° of display panels upsets are used, also can not lose some the line data-signals in foremost.
This beginning pulse signal of this time-out interval scanning technique (Scan in Blanking) control STV sees off in advance, makes this scanner driver see this article one scanning-line signal SDM1, this second scanning-line signal SDM2 one by one off ..., the tenth scanning-line signal SDM10.This moment, the frequency of this clock signal CKV can be identical with the frequency of clock signal CKV under the normal running or faster than the frequency of the clock signal CKV under the normal running.At preceding 10 empty scan signal lines (dummy scan lines) SDM1, SDM2 ..., after SDM10 accomplished scanning; Close this clock signal CKV; This clock signal CKV when waiting for this enable signal DE input, is restarted this clock signal CKV in order to the sequential of this driver of gated sweep.This moment, this enable signal DE this time schedule controller of activation (Timing Controller) 190a was correctly by this data signal line S1, S2 ..., drive the pixel in the active display area in this liquid crystal indicator.When this enable signal DE becomes the accurate position of a high voltage, this image data of this time schedule controller of activation (Timing Controller) 190a output DATA.Even therefore when 180 ° of display panels upsets are used, picture is normally shown, and can not lose some the line data-signals in foremost.
See also shown in Figure 9ly, be the liquid crystal display apparatus driving circuit synoptic diagram of this case the 5th preferred embodiment.Be example as aforementioned display panels with resolution 1280*800 pixel, as shown in Figure 1, suppose that each data driver has 642 passages, each scanner driver has 270 passages.This data driver 141a, 142a, 143a, 144a, 145a utilize its passage that data-signal is delivered to 642 data signal lines on the panel to drive the pixel in the active display area in this liquid crystal indicator.And data driver 146a only utilizes its passage that data-signal is delivered to 630 data signal lines on the panel to drive the pixel in the active display area in this liquid crystal indicator.Wherein 12 data signal lines are dummy data signal wire (dummy data lines), and in other words, these 12 data signal lines are not carried out the transmission of data-signal.
As shown in Figure 9; For avoiding loss because of some the line data-signals in foremost of dummy data signal wire (the dummy data lines) picture that causes; Therefore the present invention utilizes pixel data delay technology (pixel data delay) to reach picture normally to show; Even when 180 ° of display panels upsets are used, also can not lose some the line data-signals in foremost.
This pixel data delay technology (pixel data delay) produces earlier and should begin pulse signal (start pulse) STH, and this time schedule controller of activation (Timing Controller) 190a receives pixel data RGBl, RGB2, the RGB3 of this image data DATA when this enable signal DE becomes the accurate position of a high voltage ...This time schedule controller (Timing Controller) 190a is with pixel data RGB1, RGB2, the RGB3 of this image data DATA ... Be stored in a storer.Because it is dummy data signal wire (dummy data lines) that 12 data signal lines are arranged, in other words need 4 preset pixels to remove to fill up these 12 dummy data signal wires (dummy data lines).Therefore this time schedule controller (Timing Controller) 190a exports earlier 4 preset pixel datas (pixel data) Patch1, Patch2, Patch3, Patch4 one by one and gives dummy data signal wire (dummy data lines), afterwards just with pixel data RGB1, RGB2, the RGB3 of this image data DATA ... Correctly export by this storer via data signal line.
Therefore; This time schedule controller (Timing Controller) produces this beginning pulse signal (start pulse) STH earlier and stores some line data-signals; Give unnecessary data signal line with preset data-signal; That is dummy data signal wire (dummy data lines), make the data-signal of article one line correctly to export at article one data signal line.Even therefore when 180 ° of display panels upsets are used, picture is normally shown, and can not lose some the line data-signals in foremost.
See also Figure 10 and Figure 11; For being reversed 180 ° when using when display panels in the floor map that is known in the liquid crystal indicator under normal scan (Normal Scan) situation and this case the 6th preferred embodiment, utilize the liquid crystal display apparatus driving circuit of this case the 5th preferred embodiment to drive the floor map of the liquid crystal indicator of liquid crystal panel with dummy data line.Like Figure 10 and shown in Figure 11, this liquid crystal indicator 200 comprises a display panels 210, and defines a non-active display area and an active display area on it.Have a plurality of pixels of lining up a matrix array in this active display area, a plurality of scan signal lines form and a plurality of data signal lines form along the stringer of this pixel along the line of this pixel; How sweep signal on a plurality of scan signal lines writes pixel in order to the data of controlling on a plurality of data signal lines.One printed circuit board (PCB) has time schedule controller (Timing controller) 290a, in order to control data driver 240 and scanner driver 250, makes this data driver 240 and scanner driver 250 drive the interior pixel of this active display area.
In Figure 11; Data driver 241a, 242a, 244a, the last all passages of 245a all correspond to data signal line; But data driver 243a and 246a then only need to use the part passage to correspond to data signal line; And last part passage must not correspond to the data signal line in the visible area, claims that this last part passage is dummy data signal wire (dummy data lines) DDL, this dummy data signal wire not data signal to the data signal line of visible area.Same, the scanner driver that scan signal line also needs enough numbers in this example transmits sweep signal.And general in the technology of LCD, also need prepare the scanner driver of same channels number, so that force down the charging cost.In Figure 11; Scanner driver 251a, the last all passages of 252a all correspond to scan signal line; But scanner driver 253a then only needs to use the part passage to correspond to scan signal line; And last part passage need not correspond to the scan signal line in the visible area, claims that this last part passage is empty scan signal line (dummy scan lines) DSL, and this empty scan signal line does not transmit sweep signal to the scan signal line of visible area.
When display panels uses down normal, do not have any problem generation, shown in figure 10.See also Figure 11, when display panels is reversed 180 ° when using, utilize the liquid crystal display apparatus driving circuit of this case the 5th preferred embodiment to drive the floor map of the liquid crystal indicator of liquid crystal panel.Shown in figure 11; When in case display panels is reversed 180 ° of uses; Being located at this drive IC 243a and 246a (data driver, data driver) only utilizes its corresponding partial data signal wire to drive the pixel in the active display area in this liquid crystal indicator.It is dummy data signal wire (dummy data lines) DDL that unnecessary some data signal lines are wherein arranged, and in other words, these unnecessary some data signal lines are not carried out the transmission of data-signal.In the 6th preferred embodiment, also use the liquid crystal display apparatus driving circuit of above-mentioned the 5th preferred embodiment, be reached for and avoid because the loss of some the line data-signals in foremost of dummy data signal wire (the dummy data lines) picture that causes.
This pixel data delay technology (pixel data delay) produces earlier and should begin pulse signal (start pulse) STHA or STHB, and this time schedule controller of activation (Timing Controller) 290a receives pixel data RGBl, RGB2, the RGB3 of this image data DATA when this enable signal DE becomes the accurate position of a high voltage ...This time schedule controller (Timing Controller) 290a is with pixel data RGBl, RGB2, the RGB3 of this image data DATA ... Be stored in the storer.Because it is dummy data signal wire (dummy data lines) that the partial data signal wire is arranged, the pixel that in other words need preset removes to fill up this part dummy data signal wire (dummy data lines).Therefore this time schedule controller (Timing Controller) 290a earlier one by one preset pixel data (pixel data) Patch1, Patch2, Patch3, the Patch4 of output give dummy data signal wire (dummy data lines), afterwards just correctly with pixel data RGBl, RGB2, the RGB3 of this image data DATA ... Correctly export by this storer via data signal line.
Therefore; This time schedule controller (Timing Controller) produces this beginning pulse signal (start pulse) STHA or STHB earlier and stores some line data-signals; Give unnecessary data signal line with preset data-signal; That is dummy data signal wire (dummy data lines), make data-signal correctly to export at data signal line.Even therefore when 180 ° of display panels upsets are used, picture is normally shown, and can not lose some the line data-signals in foremost.In sum; The present invention provides a kind of liquid crystal indicator and driving method thereof with void signal wire; When 180 ° of display panels upsets are used; Under the situation of liquid opaque LCD panel array design not, picture is normally shown, and can not lose some the line data-signals in foremost.
The specific embodiment of the invention described above is the understanding for the ease of those skilled in the art with diagram, yet the interest field of this patent is not limited to the foregoing description.
In sum, the object of the invention fully and is effectively disclosed.Those skilled in the art can carry out various modifications to the present invention under the prerequisite that does not deviate from spirit of the present invention and protection domain.
Claims (14)
1. display device comprises:
A plurality of pixels, it is arranged in plural number row and several column with the matrix array form;
A plurality of data signal lines, each data signal line are arranged at a first side of each row pixel respectively, and are electrically connected with each pixel in its corresponding row;
A plurality of scan signal lines, each scan signal line are arranged at a first side of each row pixel respectively, and are electrically connected with each pixel in its respective column;
At least one empty scan signal line is arranged at said matrix array outermost;
One data driver is used for driving said a plurality of data signal lines;
The one scan driver is used for driving said a plurality of scan signal lines and said empty scan signal line; And
Time schedule controller; Be electrically connected said data driver and said scanner driver; Comprise at least one storer; When data inputs enable signal became the accurate position of a high voltage, said time schedule controller saw at the beginning that pulse signal causes said scanner driver to see the scanning-line signal of corresponding said empty scan signal line off off, and deposits an image data in said storer; By the time after said empty scan signal line is accomplished the scanning of corresponding said scanning-line signal, drive said liquid crystal indicator via said data signal line by said time schedule controller.
2. display device comprises:
A plurality of pixels, it is arranged in plural number row and several column with the matrix array form;
A plurality of data signal lines, each data signal line are arranged at a first side of each row pixel respectively, and are electrically connected with each pixel in its corresponding row;
A plurality of scan signal lines, each scan signal line are arranged at a first side of each row pixel respectively, and are electrically connected with each pixel in its respective column;
At least one empty scan signal line is arranged at said matrix array outermost;
One data driver is used for driving said a plurality of data signal lines;
The one scan driver is used for driving said a plurality of scan signal lines and said empty scan signal line; And
Time schedule controller; Be electrically connected said data driver and said scanner driver; Control at the beginning pulse signal in advance a specified time interval see off; After making said scanner driver accomplish said empty sweep signal line sweep, the said time schedule controller of data input enable signal activation drives said liquid crystal indicator by said data signal line.
3. display device as claimed in claim 2, wherein said specified time interval is for accomplishing the required time interval of empty scan signal line.
4. display device comprises:
A plurality of pixels, it is arranged in plural number row and several column with the matrix array form;
A plurality of data signal lines, each data signal line are arranged at a first side of each row pixel respectively, and are electrically connected with each pixel in its corresponding row;
A plurality of scan signal lines, each scan signal line are arranged at a first side of each row pixel respectively, and are electrically connected with each pixel in its respective column;
At least one empty scan signal line is arranged at said matrix array outermost;
One data driver is used for driving said a plurality of data signal lines;
The one scan driver is used for driving said a plurality of scan signal lines and said empty scan signal line; And
Time schedule controller; Be electrically connected said data driver and said scanner driver; Utilize the said time schedule controller of data inputs enable signal activation, said time schedule controller is seen pulse signal at the beginning off, and the frequency of controlling a clock signal is greater than original normal running frequency; Make said scanner driver in a specific period, accomplish said empty sweep signal line sweep, drive said liquid crystal indicator by said time schedule controller via said data signal line again.
5. display device as claimed in claim 4, the frequency of wherein said clock signal at least must be greater than the number of empty scan signal line greater than the multiple of original normal running frequency.
6. display device comprises:
A plurality of pixels, it is arranged in plural number row and several column with the matrix array form;
A plurality of data signal lines, each data signal line are arranged at a first side of each row pixel respectively, and are electrically connected with each pixel in its corresponding row;
A plurality of scan signal lines, each scan signal line are arranged at a first side of each row pixel respectively, and are electrically connected with each pixel in its respective column;
At least one empty scan signal line is arranged at said matrix array outermost;
One data driver is used for driving said a plurality of data signal lines;
The one scan driver is used for driving said a plurality of scan signal lines and said empty scan signal line; And
Time schedule controller; Be electrically connected said data driver and said scanner driver; Controlling at the beginning pulse signal sees off in advance; Said scanner driver is had after grace time accomplishes the scanning of empty scan signal line, and the said time schedule controller of data input enable signal activation drives said liquid crystal indicator via said data signal line.
7. the frequency of the said clock signal under the display device as claimed in claim 6, the frequency of a clock signal of wherein said display device and normal running is identical.
8. display device as claimed in claim 6, the frequency of a clock signal of wherein said display device is faster than the frequency of the said clock signal under the normal running.
9. display packing; Be applied to a display device; Said display device comprises a plurality of pixels, a plurality of data signal lines, a plurality of scan signal lines, at least one empty scan signal line, a data driver, one scan driver and time schedule controller; Said time schedule controller comprises at least one storer, comprises the following steps:
When data inputs enable signal became the accurate position of a high voltage, said time schedule controller saw at the beginning that pulse signal causes said scanner driver to see the scanning-line signal of corresponding said empty scan signal line off off; And
Deposit an image data in said storer, wait until that said empty scan signal line is accomplished the scanning of corresponding said scanning-line signal after, drive said liquid crystal indicator by said time schedule controller via said data signal line.
10. display packing; Be applied to a display device; Said display device comprises a plurality of pixels, a plurality of data signal lines, a plurality of scan signal lines, at least one empty scan signal line, a data driver, one scan driver and time schedule controller, comprises the following steps:
Control at the beginning pulse signal in advance a specified time interval see off; And
After making said scanner driver accomplish said empty sweep signal line sweep, the said time schedule controller of data input enable signal activation drives said liquid crystal indicator by said data signal line.
11. display packing; Be applied to a display device; Said display device comprises a plurality of pixels, a plurality of data signal lines, a plurality of scan signal lines, at least one empty scan signal line, a data driver, one scan driver and time schedule controller, comprises the following steps:
Utilize the said time schedule controller of data input enable signal activation, said time schedule controller is seen pulse signal at the beginning off:
The frequency of controlling a clock signal makes said scanner driver in a specific period, accomplish said empty sweep signal line sweep greater than original normal running frequency; And
Drive said liquid crystal indicator by said time schedule controller via said data signal line.
12. display packing; Be applied to a display device; Said display device comprises a plurality of pixels, a plurality of data signal lines, a plurality of scan signal lines, at least one empty scan signal line, a data driver, one scan driver and time schedule controller, comprises the following steps:
Control at the beginning pulse signal and see off in advance, make said scanner driver have the scanning that grace time is accomplished empty scan signal line; And
The said time schedule controller of one data input enable signal activation drives said liquid crystal indicator via said data signal line.
13. display packing as claimed in claim 12; Wherein also comprise the following steps: to have after grace time accomplishes the scanning of empty scan signal line when said scanner driver; Close a clock signal; Said clock signal is waited for when said data input enable signal is imported in order to the sequential of the said scanner driver of gated sweep, is restarted said clock signal.
14. display packing; Be applied to a display device; Said display device comprises a plurality of pixels, a plurality of data signal lines, at least one dummy data signal wire, a plurality of scan signal lines, a data driver, one scan driver, time schedule controller and at least one storer, comprises the following steps:
Produce pulse signal at the beginning, the said time schedule controller of activation receives the pixel data of an image data when data input enable signal becomes the accurate position of a high voltage;
The pixel data of said image data is stored at least one storer; And
After the preset pixel data of said time schedule controller output is given said dummy data signal wire, the pixel data of said image data is exported via said data signal line by said storer.
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| CN110767167B (en) * | 2018-10-31 | 2021-02-12 | 昆山国显光电有限公司 | Display screen and display terminal |
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| TW200627353A (en) * | 2005-01-21 | 2006-08-01 | Chi Mei Optoelectronics Corp | Liquid crystal display and driving method thereof |
| CN1932938A (en) * | 2005-09-13 | 2007-03-21 | Lg电子株式会社 | Light emitting device and method of driving the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TW200627353A (en) * | 2005-01-21 | 2006-08-01 | Chi Mei Optoelectronics Corp | Liquid crystal display and driving method thereof |
| CN1932938A (en) * | 2005-09-13 | 2007-03-21 | Lg电子株式会社 | Light emitting device and method of driving the same |
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