CN103810975B - Time schedule controller, source electrode driver, display driver circuit and display drive method - Google Patents
Time schedule controller, source electrode driver, display driver circuit and display drive method Download PDFInfo
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- CN103810975B CN103810975B CN201210458169.2A CN201210458169A CN103810975B CN 103810975 B CN103810975 B CN 103810975B CN 201210458169 A CN201210458169 A CN 201210458169A CN 103810975 B CN103810975 B CN 103810975B
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Abstract
A kind of time schedule controller, source electrode driver, display driver circuit and display drive method.Time schedule controller includes sequential control circuit, the first scrambler and the second scrambler.Sequential control circuit provides the first source drive data and the second source drive data.First scrambler scrambles the first source drive data to produce the first scrambled data according to the first random number.Second scrambler scrambles the second source drive data to produce the second scrambled data according to the second random number, and the second random number is different from the first random number.
Description
Technical field
The invention relates to a kind of time schedule controller, source electrode driver, display driver circuit and display drive method.
Background technology
The chipset of liquid crystal display includes time schedule controller and source electrode driver.Time schedule controller is according to the video of input
Signal produces source drive data, and source drive data are also exported to source electrode driver by time schedule controller.Source electrode driver root
According to source drive data-driven display floater.But, the data link (Data between time schedule controller and source electrode driver
Link) easily give off electromagnetic interference (ElectromagneticDisturbance, EMI), and then have influence on wireless wide area network
Network (Wireless Wide Area Network, WWAN), bluetooth, military discipline frequency range etc. are applied.
Summary of the invention
The invention relates to a kind of time schedule controller, source electrode driver, display driver circuit and display drive method.
According to the present invention it is proposed that a kind of display driver circuit.Display driver circuit includes time schedule controller and source drive
Circuit.Time schedule controller includes sequential control circuit, the first scrambler (Scrambler) and the second scrambler.Sequencing contro electricity
Road provides the first source drive data and the second source drive data.First scrambler scrambles the first source electrode according to the first random number
Driving data is to produce the first scrambled data.Second scrambler scrambles the second source drive data to produce according to the second random number
Second scrambled data, and the second random number is different from the first random number.Source drive unit includes the first descrambler (De-
Scrambler), the second descrambler and source electrode drive circuit.First descrambler descrambles the first scrambled data according to the first random number
To produce the first source drive data, and the second descrambler descrambles the second scrambled data to produce the second source according to the second random number
Pole driving data.Source electrode drive circuit is according to the first source drive data and the second source drive data-driven display floater.
According to the present invention it is proposed that a kind of time schedule controller.Time schedule controller includes sequential control circuit, the first scrambler
And the second scrambler (Scrambler).Sequential control circuit provides the first source drive data and the second source drive data.The
One scrambler scrambles the first source drive data to produce the first scrambled data according to the first random number.Second scrambler is according to
Two randoms number scramble the second source drive data to produce the second scrambled data, and the second random number is different from the first random number.
According to the present invention it is proposed that a kind of source electrode driver.Source electrode driver includes descrambler (De-scrambler), multiplexing
Device and source electrode drive circuit.Descrambler descrambles scrambled data to produce source drive data according to random number.Multiplexer is according to choosing
Select signal to export random number to descrambler.Source electrode drive circuit is according to source drive data-driven display floater.
According to the present invention it is proposed that a kind of display drive method.Display drive method, including: the first source drive number is provided
According to and the second source drive data；Producing the first random number and the second random number, the second random number is different from the first random number；Root
Scramble the first source drive data to produce the first scrambled data according to the first random number, and scramble the second source according to the second random number
Pole driving data is to produce the second scrambled data；Export the first scrambled data and the second scrambled data to source drive unit；Root
Descramble the first scrambled data to produce the first source drive data according to the first random number, and add according to the second random number descrambling second
Disturb data to produce the second source drive data；And show according to the first source drive data and the second source drive data-driven
Show panel.
More preferably understand in order to the above and other aspect of the present invention is had, special embodiment below, and coordinate institute's accompanying drawing
Formula, is described in detail below.
Accompanying drawing explanation
Fig. 1 is schematically shown as a kind of display driver circuit according to first embodiment.
Fig. 2 is schematically shown as a kind of display driver circuit according to the second embodiment.
Fig. 3 is schematically shown as a kind of display driver circuit according to the 3rd embodiment.
Fig. 4 is schematically shown as a kind of display driver circuit according to the 3rd embodiment.
Fig. 5 is schematically shown as a kind of display driver circuit according to the 5th embodiment.
Fig. 6 is schematically shown as the flow chart of a kind of display drive method.
[main element label declaration]
1,2,3,4,5: display driver circuit 11,21,31,41,51: time schedule controller
12,22,32,42,52: source drive unit
12 (1)～12 (N), 22 (1)～22 (N), 32 (1)～32 (N), 42 (1)～42 (N), 52 (1)～52 (N): source
Driver
61～66: step 111: sequential control circuit
112 (1)～112 (M), 122 (1)～122 (M): tandom number generator
113 (1)～113 (N): scrambler 114 (1)～114 (N): multiplexer
121 (1)～121 (N): source electrode drive circuit 123 (1)～123 (M): descrambler
124 (1)～124 (N): multiplexer R (1)～R (M): random number
SD (1)～SD (N): source drive data SSD (1)～SSD (N): scrambled data
SEL (1)～SEL (N): select signal
Detailed description of the invention
First embodiment
Refer to Fig. 1, Fig. 1 and be schematically shown as a kind of display driver circuit according to first embodiment.Display driver circuit 1 includes
Time schedule controller 11 and source drive unit 12.Time schedule controller 11 include sequential control circuit 111, N group tandom number generator,
Scrambler (Scrambler) 113 (1)～113 (N) and multiplexer 114 (1)～114 (N), and each group of tandom number generator bag
Include tandom number generator 112 (1)～112 (M).Sequential control circuit 111 provides source drive data SD (1)～SD (N).At random
Number producer 112 (1)～112 (M) produces random number R (1)～R (M) respectively, and exports random number R (1)～R (M) to multiplexer
114 (1)～114 (N), and random number R (1)～R (M) different from each other.For the sake of for convenience of description, first embodiment is equal to N with M
As a example by illustrate, in other embodiments, M can be more than or less than N, and random number R (1)～R (M) also can part identical.Multiplexer
114 (1)～114 (N) are respectively according to selecting signal SEL (1)～SEL (N) output random number R (1)～R (M) to scrambler 113
～113 (N) (1).Scrambler 113 (1)～113 (N) respectively according to random number R (1)～R (N) produce scrambled data SSD (1)～
SSD(N)。
Furthermore, it is understood that multiplexer 114 (1) is according to selecting signal SEL (1) output random number R (1) to scrambler 113
(1), and multiplexer 114 (2) according to select signal SEL (2) output random number R (2) to scrambler 113 (2).By that analogy, many
Multiplexer 114 (N) is according to selecting signal SEL (N) output random number R (N) to scrambler 113 (N).
Source drive unit 12 includes designing identical source electrode driver 12 (1) to 12 (N).Source electrode driver 12 (1) is extremely
12 (N) include source electrode drive circuit 121 (1)～121 (N), one group of tandom number generator, descrambler (De-scrambler) respectively
123 (1)～123 (M) and multiplexer 124 (1)～124 (N), and each group of tandom number generator include tandom number generator 122
～122 (M) (1).Tandom number generator 122 (1)～122 (M) produces random number R (1)～R (M) respectively, and random number R (1)～
R (M) is different from each other.Multiplexer 124 (1)～124 (N) is respectively according to selecting signal SEL (1)～SEL (N) output random number R (1)
～R (M) is to descrambler 123 (1)～123 (N).Descrambler 123 (1)～123 (N) descrambles according to random number R (1)～R (N) respectively
Scrambled data SSD (1)～SSD (N) are to produce source drive data SD (1)～SD (N).Source electrode drive circuit 121 (1)～121
(N) display floater is driven according to source drive data SD (1)～SD (N) respectively.
Furthermore, it is understood that multiplexer 124 (1) is according to selecting signal SEL (1) output random number R (1) to descrambler 123
(1), and multiplexer 124 (2) according to select signal SEL (2) output random number R (2) to descrambler 113 (2).By that analogy, many
Multiplexer 124 (N) is according to selecting signal SEL (N) output random number R (N) to scrambler 123 (N).
Owing to scrambler 113 (1)～113 (N) produces scrambled data SSD according to different random number R (1)～R (N) respectively
～SSD (N) (1), therefore the data transmissions between time schedule controller 11 and source drive unit 12 reaches degree the most in havoc, and then
Reduce the risk of electromagnetic signal interference.
Second embodiment
It is schematically shown as a kind of display driver circuit according to the second embodiment referring to Fig. 1 and Fig. 2, Fig. 2.Display drives
Circuit 2 includes time schedule controller 21 and source drive unit 22, and source drive unit 22 includes source electrode driver 22 (1)～22
(N).It is that 21 N number of randoms number of need of time schedule controller produce in place of display driver circuit 2 and display driver circuit 1 main difference
Device.When selecting signal SEL (1)～SEL (N) respectively equal to 1～N, multiplexer 114 (1)～114 (N) exports random number R respectively
～R (M) (1).Relatively, source drive unit 22 includes source electrode driver 22 (1) to 22 (N), and each source electrode driver only needs
One tandom number generator.When selecting signal SEL (1)～SEL (N) respectively equal to 1～N, multiplexer 124 (1)～124 (N)
Export random number R (1)～R (M) respectively.Owing to using the number of tandom number generator to reduce, life therefore can be reduced further
Produce cost to improve product competitiveness.
3rd embodiment
It is schematically shown as a kind of display driver circuit according to the 3rd embodiment referring to Fig. 2 and Fig. 3, Fig. 3.Display drives
Circuit 3 includes time schedule controller 31 and source drive unit 32, and source drive unit 32 includes source electrode driver 32 (1)～32
(N).It is that source electrode driver 32 (1) is different from source drive in place of display driver circuit 3 and display driver circuit 2 main difference
Device 22 (1).Source electrode driver 32 (1) includes source electrode drive circuit 121 (1), tandom number generator 122 (1)～122 (2), descrambling
Device 123 (1)～123 (2) and multiplexer 124 (1)～124 (2).In other embodiments, also visual reality is applied and elastic adjustment
The number of tandom number generator, descrambler and multiplexer in single source electrode driver.
4th embodiment
It is schematically shown as a kind of display driver circuit according to the 3rd embodiment referring to Fig. 2 and Fig. 4, Fig. 4.Display drives
Circuit 4 includes time schedule controller 41 and source drive unit 42, and source drive unit 42 includes source electrode driver 42 (1)～42
(N).It is that time schedule controller 41 is equal to 0 with random number R 1 in place of display driver circuit 4 and display driver circuit 2 main difference
Replace the tandom number generator 112 (1) of time schedule controller 21.Accordingly, source electrode driver 42 is equal to 0 replacement with random number R 1
The tandom number generator 122 (1) of source electrode driver 22.
5th embodiment
It is schematically shown as a kind of display driver circuit according to the 5th embodiment referring to Fig. 2 and Fig. 5, Fig. 5.Display drives
Circuit 5 includes time schedule controller 51 and source drive unit 52, and source drive unit 52 includes source electrode driver 52 (1)～52
(N).It is tandom number generator 112 (1)～112 (M) point in place of display driver circuit 5 and display driver circuit 2 main difference
It is not connected to scrambler 113 (1)～113 (N), and not via multiplexer 114 (1)～114 (N).Accordingly, tandom number generator
122 (1)～122 (M) are respectively connecting to descrambler 123 (1)～123 (N), and not via multiplexer 124 (1)～124 (N).
Display drive method
The flow chart of a kind of display drive method it is schematically shown as referring to Fig. 1 and Fig. 6, Fig. 6.Display drive method can be answered
For aforementioned display driver circuit 1, and comprise the steps.The most as shown at step 61, sequential control circuit 111 provides source electrode
Driving data SD (1)～SD (N).Then, as shown in step 62, tandom number generator 112 (1)～112 (M) produces respectively at random
Number R (1)～R (M), random number R (1)～R (M) can be entirely different or part is identical.The most as shown at step 63, scrambler
113 (1)～113 (N) scramble source drive data SD (1)～SD (N) to produce scrambling according to random number R (1)～R (N) respectively
Data SSD (1)～SSD (N).The most as shown in step 64, scrambler 113 (1)～113 (N) output scrambled data SSD (1)～
SSD (N) is to source drive unit 12.The most as shown at step 65, descrambler 123 (1)～123 (N) is respectively according to random number R
(1)～R (N) descrambling scrambled data SSD (1)～SSD (N) to produce source drive data SD (1)～SD (N).And then such as step
Shown in 66, source electrode drive circuit 121 (1)～121 (N) drives display surface according to source drive data SD (1)～SD (N) respectively
Plate.
In sum, although the present invention is disclosed above with embodiment, and so it is not limited to the present invention.Institute of the present invention
Belong to and technical field has usually intellectual, without departing from the spirit and scope of the present invention, when making various changes and profit
Decorations.Therefore, protection scope of the present invention is when being as the criterion depending on the defined person of scope of the appended claims.
Claims (26)
1. a display driver circuit, including:
Time schedule controller, including:
One sequential control circuit, in order to provide one first source drive data and one second source drive data；
One first scrambler, in order to scramble these the first source drive data to produce one first scrambling number according to one first random number
According to；And
One second scrambler, in order to scramble these the second source drive data to produce one second scrambling number according to one second random number
According to, this second random number is different from this first random number；And
One source drive unit, including:
One first descrambler, in order to descramble this first scrambled data to produce this first source drive number according to this first random number
According to；
One second descrambler, in order to descramble this second scrambled data to produce this second source drive number according to this second random number
According to；And
One source electrode drive circuit, in order to according to these the first source drive data and this second source drive data-driven one display surface
Plate,
Wherein this first scrambler and this first descrambler are one-one relationship, and this second scrambler and this second descrambler are
One-one relationship.
Display driver circuit the most according to claim 1, wherein this time schedule controller also includes:
One first multiplexer, in order to select signal to export this first random number to this first scrambler according to one first；And
One second multiplexer, in order to select signal to export this second random number to this second descrambler according to one second.
Display driver circuit the most according to claim 2, wherein this time schedule controller also includes:
One first tandom number generator, in order to produce this first random number, and exports this first random number to this first multiplexer；
And
One second tandom number generator, in order to produce this second random number, and exports this second random number to this second multiplexer.
Display driver circuit the most according to claim 3, wherein this time schedule controller also includes:
One the 3rd tandom number generator, in order to produce one the 3rd random number, and exports the 3rd random number to this first multiplexer,
3rd random number is different from this first random number；And
One the 4th tandom number generator, in order to produce one the 4th random number, and exports the 4th random number to this second multiplexer,
4th random number is different from this second random number.
Display driver circuit the most according to claim 1, wherein this source drive unit also includes:
One first multiplexer, in order to select signal to export this first random number to this first descrambler according to one first；And
One second multiplexer, in order to select signal to export this second random number to this second descrambler according to one second.
Display driver circuit the most according to claim 5, wherein this source drive unit also includes:
One first tandom number generator, in order to produce this first random number, and exports this first random number to this first multiplexer；
And
One second tandom number generator, in order to produce this second random number, and exports this second random number to this second multiplexer.
Display driver circuit the most according to claim 6, wherein this source drive unit also includes:
One the 3rd tandom number generator, in order to produce one the 3rd random number, and exports the 3rd random number to this first multiplexer,
3rd random number is different from this first random number；And
One the 4th tandom number generator, in order to produce one the 4th random number, and exports the 4th random number to this second multiplexer,
4th random number is different from this second random number.
Display driver circuit the most according to claim 1, wherein this time schedule controller also includes:
One first tandom number generator, in order to produce this first random number.
Display driver circuit the most according to claim 1, wherein this first random number is 0.
Display driver circuit the most according to claim 1, wherein this source drive unit also includes:
One first tandom number generator, in order to produce this first random number；And
One second tandom number generator, in order to produce this second random number.
11. display driver circuits according to claim 10, wherein this first tandom number generator is connected to this and first adds
Disturb device, and this second tandom number generator is connected to this second scrambler.
12. 1 kinds of time schedule controllers, including:
One sequential control circuit, in order to provide one first source drive data and one second source drive data to a source drive
Unit；
One first scrambler, in order to scramble these the first source drive data to produce one first scrambling number according to one first random number
According to；And
One second scrambler, in order to scramble these the second source drive data to produce one second scrambling number according to one second random number
According to, this second random number is different from this first random number,
Wherein this one of the first scrambler and this source drive unit the first descrambler is one-one relationship, this second scrambler and
One of this source drive unit the second descrambler is one-one relationship.
13. time schedule controllers according to claim 12, also include:
One first multiplexer, in order to select signal to export this first random number to this first scrambler according to one first；And
One second multiplexer, in order to select signal to export this second random number to this second scrambler according to one second.
14. time schedule controllers according to claim 13, also include:
One first tandom number generator, in order to produce this first random number, and exports this first random number to this first multiplexer；
And
One second tandom number generator, in order to produce this second random number, and exports this second random number to this second multiplexer.
15. time schedule controllers according to claim 14, also include:
One the 3rd tandom number generator, in order to produce one the 3rd random number, and exports the 3rd random number to this first multiplexer,
3rd random number is different from this first random number；And
One the 4th tandom number generator, in order to produce one the 4th random number, and exports the 4th random number to this second multiplexer,
4th random number is different from this second random number.
16. time schedule controllers according to claim 12, also include:
One first tandom number generator, in order to produce this first random number；And
One second tandom number generator, in order to produce this second random number.
17. time schedule controllers according to claim 12, wherein this first random number is 0.
18. time schedule controllers according to claim 16, wherein this first tandom number generator is connected to this first scrambling
Device, and this second tandom number generator is connected to this second scrambler.
19. 1 kinds of source electrode drivers, including:
One first descrambler, in order to descramble one first scrambled data to produce one first source drive number according to one first random number
According to；
One second descrambler, in order to descramble one second scrambled data to produce one second source drive number according to one second random number
According to, this first scrambled data and this second scrambled data are produced by time schedule controller；
One first multiplexer, in order to select signal to export this first random number to this first descrambler according to one first；
One second multiplexer, in order to select signal to export this second random number to this second descrambler according to one second；And
One source electrode drive circuit, in order to according to these the first source drive data and this second source drive data-driven one display surface
Plate,
Wherein one of this first descrambler and this time schedule controller first scrambler be one-one relationship, this second descrambler and should
One of time schedule controller the second scrambler is one-one relationship.
20. source electrode drivers according to claim 19, also include:
One second descrambler, in order to descramble one second scrambled data to produce one second source drive number according to one second random number
According to, this second random number is different from this first random number；
One second multiplexer, in order to select signal to export this second random number to this second descrambler according to one second；
Wherein, this source electrode drive circuit is according to this second source drive this display floater of data-driven.
21. source electrode drivers according to claim 20, also include:
One first tandom number generator, in order to produce this first random number, and exports this first random number to this first multiplexer；
And
One second tandom number generator, in order to produce this second random number, and exports this second random number to this second multiplexer.
22. source electrode drivers according to claim 21, also include:
One the 3rd tandom number generator, in order to produce one the 3rd random number, and exports the 3rd random number to this first multiplexer,
3rd random number is different from this first random number；And
One the 4th tandom number generator, in order to produce one the 4th random number, and exports the 4th random number to this second multiplexer,
4th random number is different from this second random number.
23. source electrode drivers according to claim 19, wherein this first random number is equal to 0.
24. 1 kinds of display drive methods, including:
One first source drive data and one second source drive data are provided by time schedule controller；
Producing one first random number and one second random number, this second random number is different from this first random number；
According to this first random number, one of this time schedule controller the first scrambler scramble these the first source drive data to produce
One first scrambled data, and according to this second random number, one of this time schedule controller the second scrambler scramble this second source electrode
Driving data is to produce one second scrambled data；
Export this first scrambled data and this second scrambled data to a source drive unit；
According to this first random number, should to produce by this first scrambled data of one of this source drive unit the first descrambler descrambles
First source drive data, and according to this second random number, by one of this source drive unit the second descrambler descrambles this second
Scrambled data is to produce this second source drive data；And
According to these the first source drive data and this second source drive data-driven one display floater,
Wherein this first scrambler and this first descrambler are one-one relationship, and this second scrambler and this second descrambler are
One-one relationship.
25. display drive methods according to claim 24, also include:
Signal is selected to export this first random number and select signal to export this second random number extremely according to one second according to one first
This second descrambler.
26. display drive methods according to claim 24, wherein this first random number is equal to 0.
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| CN201210458169.2A CN103810975B (en) | 2012-11-14 | 2012-11-14 | Time schedule controller, source electrode driver, display driver circuit and display drive method |
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|---|---|---|---|
| CN201210458169.2A CN103810975B (en) | 2012-11-14 | 2012-11-14 | Time schedule controller, source electrode driver, display driver circuit and display drive method |
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| KR100943278B1 (en) * | 2003-06-09 | 2010-02-23 | 삼성전자주식회사 | Liquid crystal display, apparatus and method for driving thereof |
| CN100403096C (en) * | 2004-03-10 | 2008-07-16 | 友达光电股份有限公司 | Terminal circuit of liquid crystal display and its manufacturing method |
| CN100460940C (en) * | 2007-05-24 | 2009-02-11 | 友达光电股份有限公司 | Method for improving electromagnetic interference of liquid crystal display and time-sequence controller |
| US20110157260A1 (en) * | 2009-12-30 | 2011-06-30 | Jayoung Pyun | 3d image display device |
| US8362997B2 (en) * | 2010-02-12 | 2013-01-29 | Au Optronics Corporation | Display with CLK phase or data phase auto-adjusting mechanism and method of driving same |
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