CN102237030A - Driving circuit of display device - Google Patents
Driving circuit of display device Download PDFInfo
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- CN102237030A CN102237030A CN2010101714640A CN201010171464A CN102237030A CN 102237030 A CN102237030 A CN 102237030A CN 2010101714640 A CN2010101714640 A CN 2010101714640A CN 201010171464 A CN201010171464 A CN 201010171464A CN 102237030 A CN102237030 A CN 102237030A
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Abstract
The invention relates to a driving circuit which comprises a mode control unit and multiple source drivers, wherein each source driver is used for driving pixel units on various scanning lines in a display panel; each source driver is provided with M driving channels, and two subsets of each driving channel are respectively in a first mode and a second mode according to a preset mode sequence; the driving channels from the first driving channel to the Nth driving channel of each first source driver and the driving channels from the Mth driving channel to (M-N+1)th driving channel of each second source driver respectively drive the pixel units during a first scanning period and a second scanning period, wherein M is larger than or equal to N; and the modes of the driving channels from the first driving channel to the Nth driving channel of the second source driver are respectively changed by a mode control unit so as to be matched with that of the driving channels from the first driving channel to the Nth driving channel of the first source driver.
Description
Technical field
The invention relates to a kind of driving circuit, and particularly relevant for a kind of driving circuit that reduces the display device power consumption.
Background technology
(liquid crystal display LCD) comprises time schedule controller, display panel, a plurality of gate drivers and multiple source driver to LCD.Display panel comprises a plurality of pixel cells of lining up array format, and each pixel cell is coupled to the one of multi-strip scanning line and the one of many data lines.Time schedule controller output video-audio data to source electrode driver is a data drive signal with the conversion video-audio data.In addition, time schedule controller is controlled each gate drivers above-mentioned sweep trace of activation in order, controls each source electrode driver then and transmits the pixel cell of data drive signal to the sweep trace that is enabled with display frame via data line.
Generally speaking, the polarity that is sent to the data drive signal of same pixel cell in two continuous pictures is polarized by the residual charge of pixel cell with the prevention liquid crystal for complementary.As for same picture, the data drive signal of a certain pixel cell can have and is adjacent the opposite polarity of pixel cell with the low display quality that causes of prevention interference problem (crosstalk problem).Reversal of poles has several forms, for example picture counter-rotating, row counter-rotating, row counter-rotating and some counter-rotating.Be reversed to example with point, should be driven by data drive signal in the adjacent pixel unit on the same data line and the adjacent pixel unit on same sweep trace and have different polarity, for example positive polarity and negative polarity.Source electrode driver must alternately transmit the data drive signal of positive polarity and the data drive signal of negative polarity respectively in different scan periods, to drive the pixel cell on same data line.Because the data drive signal of this kind source electrode driver has the high voltage amplitude of oscillation thereby causes more power consumption.
On the contrary, because source electrode driver is at data drive signal that output during the different scanning the has same polarity pixel cell to the same data line, row counter-rotating or picture counter-rotating are usually in order to save power consumption.Yet, the display quality of carrying out row counter-rotating or picture counter-rotating not as the some counter-rotating come good.Therefore, often make the deviser be difficult between power consumption and display quality, make one's choice.
In addition, when carrying out reversal of poles, if it is fast inadequately to switch the frequency of positive polarity and negative polarity, the user perceives the flicker situation that picture occurs easily.Therefore, (Point-to-Point Reduced Swing Differential Signaling, PPRSDS) source electrode driver is suggested in order to increase the frequency of operation in a kind of point-to-point low-swing differential signal transmission.Point-to-point low-swing differential signal transmission source driver comprises a plurality of driving passages that are controlled by time schedule controller, wherein respectively drives passage and can receive video-audio data from one or two data routing.Simultaneously, the driving passage of each point-to-point low-swing differential signal transmission source driver should be set to corresponding data pattern to receive the video-audio data from the corresponding data path.
The quantity that is used for the LCD source electrode driver is along with the resolution of display panel increases and increases.Because the restriction of display panel arrangement space, source electrode driver can be set at the not homonymy of display panel, for example upside (upper side) and downside (lower side).Therefore, may have different data patterns at the driving passage of the different source electrode drivers at same data line two ends, or say to have unmatched pattern, correctly to receive video-audio data.Therefore, should there be relevant scheme can receive corresponding video-audio data with the driving passage of determining source electrode driver.
Summary of the invention
Therefore, the invention provides a kind of driving circuit of display device, can be by reducing respectively to drive the voltage swing of passage to save power consumption and to strengthen display quality by carrying out the some counter-rotating.In addition, the driving circuit data pattern that changes the driving passage at same data line two ends receives signal from the correct data path to guarantee respectively to drive passage.
The present invention proposes a kind of driving circuit, and in order to drive a display panel, wherein display panel is included in a plurality of pixel cells on the multi-strip scanning line, and driving circuit comprises multiple source driver and pattern control module.Wherein each source electrode driver has M driving passage and consistent with a preset mode sequence, two subclass of the driving passage of each source electrode driver are respectively first pattern and second pattern, and each source electrode driver comprises a plurality of first source electrode drivers and a plurality of second source electrode driver at least.Wherein first to N of each first source electrode driver drive passage respectively in order to drive above-mentioned pixel cell in first scan period, M 〉=N wherein, the driving passage that is used in first subclass of the driving passage of each first source electrode driver is started to receive first picture element signal from first data line by the first initial pulse in order, the driving passage that is used in second subclass of the driving passage of each first source electrode driver is started to receive second picture element signal from second data line by second initial pulse in order, and the N of the one of above-mentioned first source electrode driver drives the first driving passage that passage is coupled to another first source electrode driver in above-mentioned first source electrode driver.The M to the (M-N+1) of each second source electrode driver drives passage respectively in order to drive above-mentioned pixel cell in one second scan period, and the M of the one of wherein above-mentioned second source electrode driver drives (M-N+1) driving passage that passage is coupled to another second source electrode driver in above-mentioned second source electrode driver.In addition, the pattern control module is then controlled the driving passage that is used in the three subsetss of driving passage of each second source electrode driver and is started to receive first picture element signal from first data line by the first initial pulse in order, and the driving passage that is used in the 4th subclass of the driving passage of each second source electrode driver of control starts receiving second picture element signal from second data line by second initial pulse in order, so that receive picture element signal from same data line at the driving passage of first source electrode driver at each data line two ends and second source electrode driver.
In one embodiment of this invention, wherein first subclass according to the driving passage of each first source electrode driver of preset mode sequence comprises that (4i+1) of the first corresponding source electrode driver drives passage and (4i+2) drives passage, and second subclass of the driving passage of each first source electrode driver comprises that (4i+3) of the first corresponding source electrode driver drives passage and (4i+4) drives passage, and wherein i is a nonnegative integer.
In one embodiment of this invention, wherein first subclass of the driving passage of each first source electrode driver comprises that (2i+1) of the first corresponding source electrode driver drives passage, and second subclass of the driving passage of each first source electrode driver comprises that (2i+2) of the first corresponding source electrode driver drives passage, and wherein i is a nonnegative integer.
In one embodiment of this invention, second of wherein above-mentioned first source electrode driver drives passage in order to driving pixel cell in the 3rd scan period to (N+1), and (M-1) to (M-N) of above-mentioned second source electrode driver drives passage in order to drive pixel cell in the 4th scan period.
Based on above-mentioned, the invention provides the driving circuit during different scanning, exportable respectively data drive signal to the pixel cell that is staggered with zigzag on two adjacent data lines with identical polar of passage that respectively drives in the driving circuit reverses to carry out point.Therefore, the passage that respectively drives of source electrode driver reduces its voltage swing with the saving power consumption, and by carrying out some counter-rotating increase display quality.Therefore, the data pattern of the driving passage at same data line two ends change to the driving passage of guaranteeing each source electrode driver and can receive video-audio data from the correct data path in the different source electrode drivers.
For above-mentioned feature and advantage of the present invention can be become apparent, embodiment cited below particularly, and cooperate appended graphic being described in detail below.
Description of drawings
Fig. 1 illustrates the synoptic diagram into the display device of one embodiment of the invention.
Fig. 2 A illustrates and is the source electrode driver 120a of foundation Fig. 1 embodiment and the circuit diagram of 120b.
Fig. 2 B illustrates the synoptic diagram into the shift register module 121 of foundation Fig. 2 A embodiment.
Fig. 3 illustrates the synoptic diagram into the display device of another embodiment of the present invention.
Fig. 4 illustrates the synoptic diagram into the display device of another embodiment of the present invention.
Fig. 5 illustrates the synoptic diagram into the display device of another embodiment of the present invention.
Fig. 6 illustrates the synoptic diagram into the display device of another embodiment of the present invention.
Fig. 7 illustrates the synoptic diagram into the display device of another embodiment of the present invention.
Fig. 8 illustrates the synoptic diagram into the display device of another embodiment of the present invention.
Fig. 9 illustrates the synoptic diagram into the display device of one embodiment of the invention.
[main element label declaration]
100,300,400,500,600,700,800,900: display device
110,310,410,510,610,710,810,910: display panel
111,311,411,511,611,711,811,911: pixel cell
120a, 120b, 320a, 320b, 420a, 420b, 520a, 520b, 620a, 620b, 720a, 720b, 820a, 820b: source electrode driver
130,330,430,530,630,730,830: the pattern control module
CON1: displacement control signal
CON2: data controlling signal
CH
1-CH
15: drive passage
S
1-S
P: sweep trace
D
1-D
24: data line
121a, 122a: shift register module
123a, 123b: displacement multiplexer module
124a, 124b: multiplexing data device module
125a, 125b: data latching module
ASR1-ASRn, BSR1-BSRn: shift register
ASTH: the first initial pulse
BSTH: second initial pulse
MUX1, MUX3: displacement multiplexer
MUX2, MUX4: multiplexing data device
DL1, DL2: data latching device
SDU
1, SDU
2: first source electrode driver
SDL
1, SDL
2: second source electrode driver
Embodiment
Elaborate embodiments of the invention below with reference to accompanying drawing, accompanying drawing is for example understood example embodiment of the present invention, wherein same the or similar element of same numeral indication.
Fig. 1 illustrates the synoptic diagram into the display device of one embodiment of the invention.Please refer to Fig. 1, display device 100, for example LCD (Liquid Crystal Display, LCD), comprise a display panel 110 and in order to driving the driving circuit of a plurality of pixel cells 111, wherein above-mentioned pixel cell 111 with arranged in array mode on display panel 110.Sweep trace S
1-S
POn respectively have N pixel cell, wherein N and P are positive integer, N=12 for example, and N pixel cell 111 on each bar sweep trace is coupled to data line D respectively
1-D
NDriving circuit comprises a pattern control module 130 and multiple source driver, for example, and source electrode driver 120a and 120b.Each source electrode driver 120a and 120b comprise that M drives passage, and wherein M is positive integer and M 〉=N.
Because the restriction in panel layout space, source electrode driver 120a and source electrode driver 120b are configurable in the not homonymy of display panel 110, for example upside and downside.Therefore, as sweep trace S
1-S is triggered in order, and source electrode driver 120a is responsible for driving the pixel cell on each sweep trace 111 in upside display panel 110, and source electrode driver 120b is responsible for driving the pixel cell on each sweep trace 111 in downside display panel 110.In upside display panel 110, the driving channel C H of source electrode driver 120a
1-CH
12Respectively in order to first scan period via data line D
1-D
12Drive first sweep trace (S for example
1) on pixel cell 111.Suppose sweep trace S at downside display panel 110
PWith sweep trace S at upside display panel 110
TBe triggered, right the present invention is not exceeded with this trigger sequence, for example, and at the sweep trace S of downside display panel 110
T+1Can be with sweep trace S at upside display panel 110
TAnd be triggered.The driving channel C H of source electrode driver 120b
12-CH
1Respectively in order to second scan period via data line D
1-D
12At second sweep trace (S for example
p) on driving pixel cell 111.
Please refer to Fig. 1, suppose to have 4k+4 to drive passage, wherein k is nonnegative integer, for example k=2.About the AABB pattern, first subclass (firstsubset) of the driving passage of each source electrode driver 120a/120b, that is (4i+1) drives channel C H
4k+1And (4i+2) drives channel C H
4k+2Be the A pattern, with first picture element signal of reception from first data line, and second subclass of the driving passage of each source electrode driver 120a/120b (second subset), that is (4i+3) drives channel C H
4k+3And (4i+4) drives channel C H
4k+4Be the B pattern, to receive second picture element signal from second data line, wherein i is a nonnegative integer.Because source electrode driver 120a and 120b are the not homonymy that is arranged on display panel 110, as for data line D
1To～D
12, the 12nd of source electrode driver 120b～1st drives channel C H
12-CH
1Pattern be different from the 12nd of source electrode driver 120a～1st respectively and drive channel C H
12-CH
1Pattern.That is to say that different source electrode driver 120a and the driving passage of 120b are at each data line D
1-D
12Two ends, the driving channel C H of source electrode driver 120a for example
1Driving channel C H with source electrode driver 120b
12Be the different pieces of information pattern, and the driving channel C H of source electrode driver 120b
1-CH
12The pixel cell 110 of incorrect picture element signal to each sweep trace can be provided.Therefore, the three subsetss (third subset) of the driving passage of source electrode driver 120b, that is (4i+3) drives passage and (4i+4) drives passage, should suitably be controlled to receive first picture element signal from first data line, and the 4th subclass of the driving passage of source electrode driver 120b (fourth subset), that is (4i+1) drives passage and (4i+2) drives passage, should suitably be controlled to receive second picture element signal from second data line.
Fig. 2 A illustrates and is the source electrode driver 120a of foundation Fig. 1 embodiment and the circuit diagram of 120b.Please refer to Fig. 2 A, source electrode driver 120a comprises shift register module 121a, 122a, displacement multiplexer module 123a, multiplexing data device module 124a, data latching module 125a.Shift register module 121a comprises a plurality of shift register ASR1-ASRn, and shift register module 122a comprises a plurality of shift register BSR1-BSRn.Fig. 2 B illustrates the synoptic diagram into the shift register module 121 of foundation Fig. 2 A embodiment.Please refer to Fig. 2 A and Fig. 2 B, the driving channel C H that is used in first subclass of the driving passage of the corresponding source electrode driver 120a of shift register ASR1, ASR2, ASR5, ASR6, ASR9 and ASR10
1, CH
2, CH
5, CH
6, CH
9And CH
10The first initial pulse ASTH that is shifted in order, and the driving channel C H that is used in second subclass of the driving passage of the corresponding source electrode driver 120a of shift register BSR3, BSR4, BSR7, BSR8, BSR11 and BSR12
3, CH
4, CH
7, CH
8, CH
11And CH
12The second initial pulse BSTH in order is shifted.
Similarly, source electrode driver 120b comprises shift register module 121b, 122b, displacement multiplexer module 123b, multiplexing data device module 124b and data latching module 125b.The driving channel C H that is used in the three subsetss of the driving passage of shift register ASR12, ASR11, ASR8, ASR7, ASR4 and ASR 3 corresponding source electrode driver 120b among the shift register module 121b
12, CH
12, CH
8, CH
7, CH
4And CH
3The first initial pulse ASTH in order is shifted.The driving channel C H that is used in the 4th subclass of the driving passage of the corresponding source electrode driver 120b of shift register BSR10, BSR9, BSR6, BSR5, BSR2 and BSR1 among the shift register module 122b
10, CH
9, CH
6, CH
5, CH
2And CH
1The second initial pulse BSTH in order is shifted.Therefore, each data latching device DL2 is controlled by the initial pulse of selecting from corresponding displaced multiplexer MUX3 among the displacement multiplexer module 123b among the data latching module 125b, to latch the picture element signal of selecting from multiplexing data device MUX4 among the displacement multiplexer module 124b.
It should be noted that source electrode driver 120a and 120b can comprise also that in order to the conversion picture element signal be the digital analog converter module of aanalogvoltage, and in order to output buffer of strengthening aanalogvoltage or the like.Those skilled in the art can realize the executive component in the above-mentioned source electrode driver, and therefore the details that couples of element does not repeat them here in the above-mentioned source electrode driver.
In an embodiment of the present invention, the driving channel C H that is used in first subclass of pattern control module 130 according to the driving passage of displacement control signal CON1 and data controlling signal CON2 Controlling Source driver 120a
1, CH
2, CH
5, CH
6, CH
9And CH
10Started (activated) with first picture element signal of reception by the first initial pulse ASTH in order from the first data line BUS1, and the driving channel C H that is used in second subclass of the driving passage of Controlling Source driver 120a
3, CH
4, CH
7, CH
8, CH
11And CH
12Started to receive second picture element signal by the second initial pulse BSTH in order from the second data line BUS2.In addition, the driving channel C H that is used in the three subsetss of pattern control module 130 according to the driving passage of displacement control signal CON1 and data controlling signal CON2 Controlling Source driver 120b
12, CH
11, CH
8, CH
7, CH
4And CH
3Started with first picture element signal of reception by the first initial pulse ASTH in order from the first data line BUS1, and the driving channel C H that is used in the 4th subclass of the driving passage of Controlling Source driver 120b
10, CH
9, CH
6, CH
5, CH
2And CH
1Started to receive second picture element signal by the second initial pulse BSTH in order from the second data line BUS2.Therefore, at each data line D
1-D
12The different source electrode driver 120a at two ends and the driving passage of 120b can receive the picture element signal from same data line.
Fig. 3 illustrates the synoptic diagram into the display device of another embodiment of the present invention.Please refer to Fig. 3, suppose to have 4k+4 to drive passage, wherein k is nonnegative integer, for example k=2.About the ABAB pattern, first subclass of the driving passage of each source electrode driver 320a/320b, that is (2i+1) drives channel C H
2i+1Be the A pattern, with first picture element signal of reception from first data line, and second subclass of the driving passage of each source electrode driver 320a/320b, that is (2i+2) drives channel C H
2i+2, be the B pattern, to receive second picture element signal from second data line, wherein i is a nonnegative integer.Because source electrode driver 320a and 320b are the not homonymy that is arranged on display panel 310, the 12nd of source electrode driver 320b～1st drives channel C H
12-CH
1Pattern be different from the 12nd of source electrode driver 320a～1st respectively and drive channel C H
12-CH
1Pattern.Therefore, the three subsetss of the driving passage of source electrode driver 320b, that is (2i+2) drives channel C H
2i+2, should suitably be controlled with first picture element signal of reception from first data line, and the 4th subclass of the driving passage of source electrode driver 320b (fourth subset), that is (2i+1) drives channel C H
2i+1, should suitably be controlled to receive second picture element signal from second data line.
By the circuit of reference Fig. 2 A, the driving channel C H that is used in first subclass of pattern control module 330 according to the driving passage of displacement control signal CON1 and data controlling signal CON2 Controlling Source driver 320a
1, CH
3, CH
5, CH
7, CH
9And CH
11Started with first picture element signal of reception by the first initial pulse ASTH in order from the first data line BUS1, and the driving channel C H that is used in second subclass of the driving passage of Controlling Source driver 320a
2, CH
4, CH
6, CH
8, CH
10And CH
12Started to receive second picture element signal by the second initial pulse BSTH in order from the second data line BUS2.In addition, the driving channel C H that is used in the three subsetss of pattern control module 330 according to the driving passage of displacement control signal CON1 and data controlling signal CON2 Controlling Source driver 320b
12, CH
10, CH
8, CH
6, CH
4And CH
2Started with first picture element signal of reception by the first initial pulse ASTH in order from the first data line BUS1, and the driving channel C H that is used in the 4th subclass of the driving passage of Controlling Source driver 320b
11, CH
9, CH
7, CH
5, CH
3And CH
1Started to receive second picture element signal by the second initial pulse BSTH in order from the second data line BUS2.
Fig. 4 illustrates the synoptic diagram into the display device of another embodiment of the present invention.Please refer to Fig. 4, display device 400 comprises display panel 410 and in order to driving the driving circuit of a plurality of pixel cells 411, wherein above-mentioned pixel cell 411 with arranged in array mode on display panel 410.Sweep trace S
1-S
POn respectively have N pixel cell, wherein N and P are positive integer, for example N=12.In the present embodiment, display panel 410 is included in odd-numbered scan lines (S for example
1) on N pixel cell 411, it is coupled to data line D respectively
1-D
NAnd at even-line interlace line (S for example
2) on N pixel cell 411, it is coupled to data line D respectively
2-D
N+1Though it should be noted that present embodiment is that example describes with this display panel 411, the present invention is not as limit.Those skilled in the art can utilize N pixel cell on each sweep trace to be coupled to data line D respectively
1-D
NConventional display panels realize the present invention.
Driving circuit comprises pattern control module 430 and multiple source driver, for example source electrode driver 420a and 420b.Each source electrode driver comprises that M drives passage, and wherein M is a positive integer and (M-N) 〉=1.In upside display panel 410, the driving channel C H of source electrode driver 420a
1-CH
12Respectively in order to first scan period via data line D
1-D
12Drive first sweep trace (S for example
1) on pixel cell 411.Then, the driving channel C H of source electrode driver 420a
2-CH
13Respectively in order to second scan period via data line D
2-D
13Drive second sweep trace (S for example
2) on pixel cell 411.Wherein scan period for trigger corresponding sweep trace during.In like manner analogize, as sweep trace S
3With sweep trace S
2When being triggered, at sweep trace S
3On pixel cell 411 by the driving channel C H of source electrode driver 420a
1-CH
12Drive, and as sweep trace S
4With sweep trace S
3When being triggered, sweep trace S
4On pixel cell 411 by the driving channel C H of source electrode driver 420a
2-CH
13Drive.
The driving channel C H of source electrode driver 420b
13-CH
2Respectively in order to the 3rd scan period via data line D
1-D
12Driving is at three scan line (S for example
p) on pixel cell 411.Then, drive channel C H
12-CH
1The driving channel C H of source electrode driver 420b
12-CH
1Respectively in order to the 4th scan period via data line D
2-D
13Driving is at the 4th sweep trace (S for example
P-1) on pixel cell 411.In like manner analogize, as sweep trace S
P-2With sweep trace S
P-1When being triggered, at sweep trace S
P-2On pixel cell 411 by the driving channel C H of source electrode driver 420b
13-CH
2Drive, and sweep trace S
P-3On pixel cell 411 by the driving channel C H of source electrode driver 420b
12-CH
1Drive.
The driving channel transfer data drive signal of each source electrode driver 420a/420b is to the pixel cell 411 that is staggered with zigzag on two adjacent data lines.For convenience of description, the pixel cell 411 in sweep trace and data line point of crossing be denoted as (S, D).For example, the driving channel C H of source electrode driver 420a
2Drive pixel cell 411 (S in order
1, D
2), (S
2, D
1), (S
3, D
2) ... or the like.In an embodiment of the present invention, the passage output that respectively drives of each source electrode driver 420a/420b has the data drive signal of identical polar (for example being denoted as the positive polarity of "+"), and the contiguous driving passage output of each source electrode driver 420a/420 has the data drive signal of complementary polarity (for example being denoted as the negative polarity of "-") to carry out the some counter-rotating.Therefore, make power consumption be reduced owing to drive the voltage swing minimizing of passage.
Please refer to Fig. 4, suppose to have 4k+1 to drive passage, wherein k 〉=0, for example k=3.About the AABB pattern, first subclass of the driving passage of each source electrode driver 420a/420b, that is (4i+1) drives passage and (4i+2) driving passage is the A pattern, and second subclass of the driving passage of each source electrode driver 420a/420b, that is (4i+3) drives passage and (4i+4) driving passage is the B pattern, wherein i 〉=0.Therefore, the driving channel C H of source electrode driver 420a
1-CH
13Pattern be AABB ... ABBA, and the driving channel C H of source electrode driver 420b
13-CH
1Pattern be ABBA ... BBAA.In an embodiment of the present invention, the three subsetss of the driving passage of source electrode driver 420b, that is (4i+1) drives passage and (4i+4) drives passage, should suitably be controlled to receive first picture element signal from the first data line BUS1, and the 4th subclass of the driving passage of source electrode driver 420b, that is (4i+2) drives passage and (4i+3) drives passage, should suitably be controlled to receive second picture element signal from the second data line BUS2.
By the circuit of reference Fig. 2 A, the driving channel C H that is used in first subclass of pattern control module 430 according to the driving passage of displacement control signal CON1 and data controlling signal CON2 Controlling Source driver 420a
1, CH
2, CH
5, CH
6, CH
9And CH
10Started with first picture element signal of reception by the first initial pulse ASTH in order from the first data line BUS1, and the driving channel C H that is used in second subclass of the driving passage of Controlling Source driver 420a
3, CH
4, CH
7, CH
8, CH
11And CH
12Started to receive second picture element signal by the second initial pulse BSTH in order from the second data line BUS2.In addition, the driving channel C H that is used in the three subsetss of pattern control module 430 according to the driving passage of displacement control signal CON1 and data controlling signal CON2 Controlling Source driver 420b
13, CH
12, CH
9, CH
8, CH
5And CH
4Started with first picture element signal of reception by the first initial pulse ASTH in order from the first data line BUS1, and the driving channel C H that is used in the 4th subclass of the driving passage of Controlling Source driver 420b
11, CH
10, CH
7, CH
6, CH
3And CH
2Started to receive second picture element signal by the second initial pulse BSTH in order from the second data line BUS2.
Fig. 5 illustrates the synoptic diagram into the display device of another embodiment of the present invention.Please refer to Fig. 5, suppose that the driving port number of each source electrode driver 520a/520b equals (4k+3), for example, k=3.If the AABB pattern is performed in each source electrode driver 520a/520b, the driving channel C H of source electrode driver 520a
1-CH
15Pattern be AABB ... BAAB, but the driving channel C H of source electrode driver 520b
15-CH
1Pattern be BAAB ... BBAA.In an embodiment of the present invention, the three subsetss of the driving passage of source electrode driver 520b, that is (4i+2) drives channel C H
4i+2Drive channel C H with (4i+3)
4i+3, should suitably be controlled with first picture element signal of reception from the first data line BUS1, and the 4th subclass of the driving passage of source electrode driver 520b, that is (4i+1) drives channel C H
4i+1And (4i+4) drives channel C H
4i+4, should suitably be controlled to receive second picture element signal from the second data line BUS2.
By the circuit of reference Fig. 2 A, the driving channel C H that is used in first subclass of pattern control module 530 according to the driving passage of displacement control signal CON1 and data controlling signal CON2 Controlling Source driver 520a
1, CH
2, CH
5, CH
6, CH
9And CH
10Started with first picture element signal of reception by the first initial pulse ASTH in order from the first data line BUS1, and the driving channel C H that is used in second subclass of the driving passage of Controlling Source driver 520a
3, CH
4, CH
7, CH
8, CH
11And CH
12Started to receive second picture element signal by the second initial pulse BSTH in order from the second data line BUS2.In addition, the driving channel C H that is used in the three subsetss of pattern control module 530 according to the driving passage of displacement control signal CON1 and data controlling signal CON2 Controlling Source driver 520b
15, CH
14, CH
11, CH
10, CH
7And CH
6Started with first picture element signal of reception by the first initial pulse ASTH in order from the first data line BUS1, and the driving channel C H that is used in the 4th subclass of the driving passage of Controlling Source driver 520b
13, CH
12, CH
9, CH
8, CH
5And CH
4Started to receive second picture element signal by the second initial pulse BSTH in order from the second data line BUS2.
Fig. 6 illustrates the synoptic diagram into the display device of another embodiment of the present invention.Please refer to Fig. 6, suppose that the driving port number of each source electrode driver 620a/620b equals (4k+4), for example, k=3.If the AABB pattern is performed in each source electrode driver 620a/620b, the driving channel C H of source electrode driver 620a
1-CH
16Pattern be AABB ... AABB, but the driving channel C H of source electrode driver 620b
16-CH
1Pattern be BBAA ... AABB.In an embodiment of the present invention, the three subsetss of the driving passage of source electrode driver 620b, that is (4i+3) drives channel C H
4k+2Drive channel C H with (4i+4)
4k+4, should suitably be controlled with first picture element signal of reception from the first data line BUS1, and the 4th subclass of the driving passage of source electrode driver 620b, that is (4i+1) drives channel C H
4k+1And (4i+2) drives channel C H
4k+2, should suitably be controlled to receive second picture element signal from the second data line BUS2.
By the circuit of reference Fig. 2 A, the driving channel C H that is used in first subclass of pattern control module 630 according to the driving passage of displacement control signal CON1 and data controlling signal CON2 Controlling Source driver 620a
1, CH
2, CH
5, CH
6, CH
9And CH
10Started with first picture element signal of reception by the first initial pulse ASTH in order from the first data line BUS1, and the driving channel C H that is used in second subclass of the driving passage of Controlling Source driver 620a
3, CH
4, CH
7, CH
8, CH
11And CH
12Started to receive second picture element signal by the second initial pulse BSTH in order from the second data line BUS2.In addition, the driving channel C H that is used in the three subsetss of pattern control module 630 according to the driving passage of displacement control signal CON1 and data controlling signal CON2 Controlling Source driver 620b
16, CH
15, CH
12, CH
11, CH
8And CH
7Started with first picture element signal of reception by the first initial pulse ASTH in order from the first data line BUS1, and the driving channel C H that is used in the 4th subclass of the driving passage of Controlling Source driver 520b
14, CH
13, CH
10, CH
9, CH
6And CH
5Started to receive second picture element signal by the second initial pulse BSTH in order from the second data line BUS2.
Fig. 7 illustrates the synoptic diagram into the display device of another embodiment of the present invention.Please refer to Fig. 7, suppose that the driving port number of each source electrode driver 720a/720b equals (2k+2), for example, k=6.If the ABAB pattern is performed in each source electrode driver 720a/720b, first subclass of the driving passage of each source electrode driver 720a/720b, that is (2i+1) drives channel C H
2i+1Be the A pattern, with first picture element signal of reception from first data line, and second subclass of the driving passage of each source electrode driver 720a/720b, that is (2i+2) drives channel C H
2i+2Be the B pattern, to receive second picture element signal from second data line, wherein i is a nonnegative integer.Therefore, the driving channel C H of source electrode driver 720a
1-CH
14Pattern be ABAB ... AB, and the driving channel C H of source electrode driver 720b
14-CH
1Pattern be BABA ... BA.In an embodiment of the present invention, the three subsetss of the driving passage of source electrode driver 720b, that is (2i+2) drives channel C H
2i+2, should suitably be controlled with first picture element signal of reception from first data line, and the 4th subclass of the driving passage of source electrode driver 720b, that is (2i+1) drives channel C H
2i+1, should suitably be controlled to receive second picture element signal from second data line.
By the circuit of reference Fig. 2 A, the driving channel C H that is used in first subclass of pattern control module 730 according to the driving passage of displacement control signal CON1 and data controlling signal CON2 Controlling Source driver 720a
1, CH
3, CH
5, CH
7, CH
9And CH
11Started with first picture element signal of reception by the first initial pulse ASTH in order from the first data line BUS1, and the driving channel C H that is used in second subclass of the driving passage of Controlling Source driver 720a
2, CH
4, CH
6, CH
8, CH
10And CH
12Started to receive second picture element signal by the second initial pulse BSTH in order from the second data line BUS2.In addition, the driving channel C H that is used in the three subsetss of pattern control module 730 according to the driving passage of displacement control signal CON1 and data controlling signal CON2 Controlling Source driver 720b
14, CH
12, CH
10, CH
8, CH
6And CH
4Started with first picture element signal of reception by the first initial pulse ASTH in order from the first data line BUS1, and the driving channel C H that is used in the 4th subclass of the driving passage of Controlling Source driver 720b
13, CH
11, CH
9, CH
7, CH
5And CH
3Started to receive second picture element signal by the second initial pulse BSTH in order from second data line.
Please refer to Fig. 7, it should be noted that when corresponding sweep trace is triggered, each source electrode driver drives the pixel cell 711 on each sweep trace in the foregoing description, and wherein sweep trace was triggered in order in different scan periods, for example with S
1, S
2S
T, S
T+1... S
POrder.In an embodiment of the present invention, source electrode driver 720a and source electrode driver 720b can distinguish and synchronously drive in upside display panel 710 pixel cell on each sweep trace 711 and the pixel cell on each sweep trace 711 in downside display panel 710.
Fig. 8 illustrates the synoptic diagram into the display device of another embodiment of the present invention.Please refer to Fig. 8, in upside display panel 810, odd-numbered scan lines (S for example
1) on N pixel cell 811 be coupled to data line DU respectively
1-DU
N, and at even-line interlace line (S for example
2) on N pixel cell 811 be coupled to data line DU respectively
2-DU
N+1At downside display panel 810, odd-numbered scan lines (S for example
T+1) on N pixel cell 811 be coupled to data line DL respectively
1-DL
N, and at even-line interlace line (S for example
T+2) on N pixel cell 811 be coupled to data line DL respectively
2-DL
N+1As sweep trace S
1And S
T+1When synchronously being triggered, the driving channel C H of source electrode driver 820a
1-CH
NTransmit data drive signal to sweep trace S
1On pixel cell 811, and the driving channel C H of source electrode driver 820b
M-CH
M-N+1Transmit data drive signal to sweep trace S
T+1On pixel cell 811.Then, as sweep trace S
2And S
T+2When synchronously being triggered, the driving channel C H of source electrode driver 820a
2-CH
N+1Transmit data drive signal to sweep trace S
2On pixel cell 811, and the driving channel C H of source electrode driver 820b
M-1-CH
M-NTransmit data drive signal to sweep trace S
T+2On pixel cell 811.
Because the quantity of the driving passage in the single source electrode driver may be not enough when size of display panels increases.The deviser must utilize more source electrode driver to drive display panel.The following example drives teaching those skilled in the art in the device utilize a plurality of above-mentioned high-resolution display panels of source electrode driver.
Fig. 9 illustrates the synoptic diagram into the display device of one embodiment of the invention.Please refer to Fig. 9, display device 900 comprises display panel 910 and in order to driving the driving circuit of a plurality of pixel cells 911, wherein above-mentioned pixel cell 911 with arranged in array mode on display panel 910.Because the increase of size of display panels, display panel 910 are split into L zone, wherein each zone of display panel 910 is included in sweep trace S
1-S
POn N pixel cell 911, wherein L is a positive integer, for example L=2 and N=12.Driving circuit comprises in order to drive the first source electrode driver SDU of the pixel cell 911 on the upside display panel 910
1And SDU
2, and in order to drive the second source electrode driver SDL of the pixel cell 911 on the downside display panel 910
1And SDL
2Each source electrode driver comprises that M drives passage, and wherein M is positive integer and M 〉=N, for example M=15.The passage that respectively drives of source electrode driver is set at the 1st pattern or the 2nd pattern to receive the signal in corresponding data path.
As the one scan line of upside display panel 910 (sweep trace S for example
1) when being triggered, source electrode driver SDU
1Driving channel C H
1-CH
12Transmit data drive signal sweep trace S to display panel 910 first areas respectively
1On pixel cell 911, and the driving channel C H of source electrode driver SDU2
1-CH
12Transmit the sweep trace S of data drive signal to display panel 910 second areas respectively
1On pixel cell 911.As another sweep trace of upside display panel 910 (sweep trace S for example
2) when being triggered, source electrode driver SDU
1Driving channel C H
2-CH
13And source electrode driver SDU
2Driving channel C H
1Transmit data drive signal sweep trace S to display panel 910 first areas respectively
2On pixel cell 911, and source electrode driver SDU
2Driving channel C H
2-CH
13Transmit data drive signal sweep trace S to display panel 910 second areas respectively
2On pixel cell 911.
As the one scan line of downside display panel 910 (sweep trace S for example
T+1) when being triggered, source electrode driver SDL
1Driving channel C H
15-CH
4Transmit data drive signal sweep trace S to display panel 910 first areas respectively
T+1On pixel cell 911, and source electrode driver SDL
2Driving channel C H
15-CH
4Transmit data drive signal sweep trace S to display panel 910 second areas respectively
T+1On pixel cell 911.As another sweep trace of downside display panel 910 (sweep trace S for example
T+2) when being triggered, source electrode driver SDL
1Driving channel C H
14-CH
3And source electrode driver SDL
2Driving channel C H
15Transmit data drive signal sweep trace S to display panel 910 first areas respectively
T+2On pixel cell 911, and source electrode driver SDL
2Driving channel C H
15-CH
4Transmit data drive signal sweep trace S to display panel 910 second areas respectively
T+2On pixel cell 911.Transmit correctly each source electrode driver SDL in order to ensure data
1And SDL
2M to the 1 pattern that drives passage be set to respectively and each source electrode driver SDU
1And SDU
2The pattern that is complementary of the 1st to the M pattern that drives passage.
The driving circuit of display 900 also comprises a pattern control module 930.By the circuit of reference Fig. 2 A, pattern control module 930 is controlled the first source electrode driver SDU according to displacement control signal CON1 and data controlling signal CON2
1And SDU
2First subclass of driving passage in the driving passage that is used started receiving first picture element signal and each second source electrode driver SDL of control in order from the first data line BUS1 by the first initial pulse ASTH
1And SDL
2Second subclass of driving passage in the driving passage that is used started to receive second picture element signal by the second initial pulse BSTH in order from the second data line BUS2.In addition, pattern control module 930 is according to displacement control signal CON1 and each second source electrode driver SDL of data controlling signal CON2 control
1And SDL
2The three subsetss of driving passage in the driving passage that is used started receiving first picture element signal by the first initial pulse ASTH in order from the first data line BUS1, and control each source electrode driver SDL
1And SDL
2The 4th subclass of driving passage in the driving passage that is used started to receive second picture element signal by the second initial pulse BSTH in order from the second data line BUS2.
Please refer to Fig. 9, in an embodiment of the present invention, first subclass comprises driving channel C H
1, CH
2, CH
5, CH
6, CH
9And CH
10, second subclass comprises driving channel C H
3, CH
4, CH
7, CH
8, CH
11And CH
12, three subsetss comprise driving channel C H
15, CH
14, CH
11, CH
10, CH
7And CH
6, and the 4th subclass comprises driving channel C H
13, CH
12, CH
9, CH
8, CH
5And CH
4
In sum, shown in the embodiment of Fig. 4 to Fig. 9, source electrode driver respectively drives the exportable respectively data drive signal with identical polar of passage to the pixel cell that is staggered with zigzag on the two adjacent data lines that reverse in order to the execution point, to save power consumption and to improve display quality in the driving circuit.In addition, in the above-described embodiments, the data pattern of the driving passage at the two ends of same data line change to and is complementary in different source electrode drivers, can receive video-audio data from the correct data path with the driving passage of guaranteeing each source electrode driver.
Though the present invention discloses as above with embodiment; right its is not in order to limit the present invention; have in the technical field under any and know the knowledgeable usually; without departing from the spirit and scope of the present invention; when doing a little change and retouching, so protection scope of the present invention is as the criterion when looking appended the claim scope person of defining.
Claims (11)
1. driving circuit, in order to drive a display panel, described display panel is included in a plurality of pixel cells on the multi-strip scanning line, and described driving circuit comprises:
Multiple source driver, each described source electrode driver have M and drive passage and consistent with a preset mode sequence, and two subclass of the driving passage of each described source electrode driver are respectively first pattern and second pattern, and each described source electrode driver comprises at least:
A plurality of first source electrode drivers, first to N of each described first source electrode driver drives passage respectively in order to drive described a plurality of pixel cell in one first scan period, M 〉=N wherein, the driving passage that is used in one first subclass of the driving passage of each described first source electrode driver is started to receive one first picture element signal from one first data line by a first initial pulse in order, the driving passage that is used in one second subclass of the driving passage of each described first source electrode driver is started to receive one second picture element signal from one second data line by one second initial pulse in order, and the N of the one of described a plurality of first source electrode drivers drives the first driving passage that passage is coupled to another first source electrode driver in described a plurality of first source electrode driver; And
A plurality of second source electrode drivers, the M to the of each described second source electrode driver (M-N+1) drives passage respectively in order to drive described a plurality of pixel cell in one second scan period, and the M of the one of wherein said a plurality of second source electrode drivers drives (M-N+1) driving passage that passage is coupled to another second source electrode driver in described a plurality of second source electrode driver; And
One pattern control module, controlling the driving passage that is used in the three subsetss of driving passage of each described second source electrode driver is started to receive described first picture element signal from described first data line by described the first initial pulse in order, and control the driving passage that is used in one the 4th subclass of driving passage of each described second source electrode driver and started receiving described second picture element signal by described second initial pulse in order, so that receive described a plurality of picture element signals from same data line at the driving passage of described a plurality of first source electrode drivers at each data line two ends and described a plurality of second source electrode drivers from described second data line.
2. driving circuit according to claim 1, wherein each described first source electrode driver comprises:
One first shift register module, comprise a plurality of first shift registers, described a plurality of first shift registers of the driving passage that is used in described first subclass of the driving passage of the first wherein corresponding corresponding source electrode driver described the first initial pulse that is shifted in order;
One second shift register module, comprise a plurality of second shift registers, described a plurality of second shift registers of the driving passage that is used in described second subclass of the driving passage of the first wherein corresponding corresponding source electrode driver described second initial pulse that is shifted in order;
One displacement multiplexer module, comprise a plurality of displacement multiplexers, wherein the displacement control signal that produces according to described pattern control module of corresponding N the driving passage that is used of each described displacement multiplexer is selected the described the first initial pulse that is shifted by first shift register of correspondence and the one of described second initial pulse that is shifted by second shift register of correspondence;
One multiplexing data device module, comprise a plurality of multiplexing data devices, wherein N of being used of the data controlling signal correspondence that produces according to described pattern control module of each described multiplexing data device drives channel selecting from described first picture element signal of described first data line and from the one of described second picture element signal of described second data line; And
One data latching module comprises a plurality of data latching devices, and wherein each described data latching device is controlled by selecteed next self-corresponding displacement multiplexer initial pulse to latch the picture element signal of selecteed next self-corresponding multiplexing data device.
3. driving circuit according to claim 1, wherein each described second source electrode driver comprises:
One first shift register module, comprise a plurality of first shift registers, the driving passage that is used in the described three subsetss of the driving passage of second source electrode driver that wherein said a plurality of first shift registers are corresponding described the first initial pulse that is shifted in order;
One second shift register module, comprise a plurality of second shift registers, the driving passage that is used in described the 4th subclass of the driving passage of second source electrode driver that wherein said a plurality of second shift registers are corresponding described second initial pulse that is shifted in order;
One displacement multiplexer module, comprise a plurality of displacement multiplexers, wherein the displacement control signal that produces according to described pattern control module of corresponding N the driving passage that is used of each described displacement multiplexer is selected by the described the first initial pulse of corresponding first shift register displacement and by the one of described second initial pulse of corresponding second shift register displacement;
One multiplexing data device module, comprise a plurality of multiplexing data devices, wherein N of being used of the data controlling signal correspondence that produces according to described pattern control module of each described multiplexing data device drives channel selecting from first picture element signal of first data line and from the one of second picture element signal of second data line; And
One data latching module comprises a plurality of data latching devices, and wherein each described data latching device is controlled by selecteed next self-corresponding displacement multiplexer initial pulse to latch the picture element signal of selecteed next self-corresponding multiplexing data device.
4. driving circuit according to claim 1, wherein described first subclass according to the driving passage of described each described first source electrode driver of preset mode sequence comprises that (4i+1) of the first corresponding source electrode driver drives passage and (4i+2) drives passage, and described second subclass of the driving passage of each described first source electrode driver comprises that (4i+3) of the first corresponding source electrode driver drives passage and (4i+4) drives passage, and wherein i is a nonnegative integer.
5. driving circuit according to claim 4, wherein when the driving number of channels of each described source electrode driver equals 4k+1, the described three subsetss of the driving passage of each described second source electrode driver comprise that (4i+1) of the second corresponding source electrode driver drives passage and (4i+4) drives passage, and described the 4th subclass of the driving passage of each described second source electrode driver comprises that (4i+2) of the second corresponding source electrode driver drives passage and (4i+3) drives passage, and wherein k is a nonnegative integer.
6. driving circuit according to claim 4, wherein when the driving number of channels of each described source electrode driver equals 4k+3, the described three subsetss of the driving passage of each described second source electrode driver comprise that (4i+2) of the second corresponding source electrode driver drives passage and (4i+3) drives passage, and described the 4th subclass of the driving passage of each described second source electrode driver comprises that (4i+1) of the second corresponding source electrode driver drives passage and (4i+4) drives passage, and wherein k is a nonnegative integer.
7. driving circuit according to claim 4, wherein when the driving number of channels of each described source electrode driver equals 4k+4, the described three subsetss of the driving passage of each described second source electrode driver comprise that (4i+3) of the second corresponding source electrode driver drives passage and (4i+4) drives passage, and described the 4th subclass of the driving passage of each described second source electrode driver comprises that (4i+1) of the second corresponding source electrode driver drives passage and (4i+2) drives passage, and wherein k is a nonnegative integer.
8. driving circuit according to claim 1, wherein described first subclass of the driving passage of each described first source electrode driver comprises that (2i+1) of the first corresponding source electrode driver drives passage, and described second subclass of the driving passage of each described first source electrode driver comprises that (2i+2) of the first corresponding source electrode driver drives passage, and wherein i is a nonnegative integer.
9. driving circuit according to claim 8, wherein when the driving number of channels of each described source electrode driver equals 2k+2, the described three subsetss of the driving passage of each described second source electrode driver comprise that (2i+2) of the second corresponding source electrode driver drives passage, and described the 4th subclass of the driving passage of each described second source electrode driver comprises that (2i+1) of the second corresponding source electrode driver drives passage, and wherein k is a nonnegative integer.
10. driving circuit according to claim 1, second of wherein said a plurality of first source electrode drivers drive passage in order to driving described a plurality of pixel cell in one the 3rd scan period to (N+1), and (M-1) to (M-N) of described a plurality of second source electrode drivers drives passage in order to drive described a plurality of pixel cell in one the 4th scan period.
11. driving circuit according to claim 9, described a plurality of pixel cells on the one of wherein said multi-strip scanning line are coupled to first data line to the (P-1) data line respectively, and the described a plurality of pixel cells on the sweep trace adjacent with the one of described multi-strip scanning line couple second data line to the P data line respectively, and wherein P is the sum of described many data lines.
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|---|---|---|---|
| CN2010101714640A CN102237030A (en) | 2010-04-28 | 2010-04-28 | Driving circuit of display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101714640A CN102237030A (en) | 2010-04-28 | 2010-04-28 | Driving circuit of display device |
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|---|---|
| CN102237030A true CN102237030A (en) | 2011-11-09 |
Family
ID=44887634
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|---|---|---|---|
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Application publication date: 20111109 |