CN106205512B - Source electrode driver - Google Patents
Source electrode driver Download PDFInfo
- Publication number
- CN106205512B CN106205512B CN201510219246.2A CN201510219246A CN106205512B CN 106205512 B CN106205512 B CN 106205512B CN 201510219246 A CN201510219246 A CN 201510219246A CN 106205512 B CN106205512 B CN 106205512B
- Authority
- CN
- China
- Prior art keywords
- signal
- switch
- switching
- source electrode
- reverse
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The present invention relates to a kind of source electrode drivers, include driving signal generator, generate the relevant n group driving signal of row image data, and each group includes a positive polarity driving signal and a negative polarity driving signal；And n switching switch, there are two input terminals for each switching switch tool, receive two driving signals of respective sets, there are two output ends for each switching switch tool.When executing horizontal n dot inversion, the first output end of each switching switch is connected to 2n one of the preceding n reverse drive signal being driven reverse in signal, and second output terminal is connected to 2n one of the rear n reverse drive signal being driven reverse in signal.
Description
Technical field
The present invention relates to a kind of source electrode drivers, especially with regard to the source electrode driver of horizontal n point (HnDot) reversion.
Background technique
Liquid crystal display (LCD) has many advantages, such as light, low-power consumption and radiationless, therefore is commonly used for various electronics and produces
Product, such as computer, tablet computer, mobile phone etc. are used as output display.Liquid crystal molecule in liquid crystal display is main
The voltage difference being controlled by between pixel electrode (pixel electrode) and common voltage (common voltage), to change
The intensity of light is crossed in accommodation.
Liquid crystal display includes source electrode driver (source driver), is controlled by sequence controller (timing
Controller), to generate the driving signal for representing image data to pixel electrode.In order to avoid liquid crystal molecule causes to polarize
Permanent damage, source electrode driver needs to change periodically the polarity of driving signal, and referred to as polarity inverts.Common polarity reversion
Method has frame reversion (frame inversion), line reversion (line inversion) or dot inversion (dot inversion).
Since driving signal is not balancedly fallen between positive polarity and negative polarity, when certain patterns occurs in image
(pattern) it when, such as when black image region is adjacent with white image region, will cause the offset of common voltage, thus formed
Crosstalk (crosstalk), referred to as common voltage coupling effect.
Therefore it needs to propose a kind of novel mechanism, the shortcomings that improve traditional source electrode driver.
Summary of the invention
In view of above-mentioned, the technical problem to be solved in the present invention is that, propose a kind of source electrode of horizontal n point (HnDot) reversion
Driver, to avoid or reduce crosstalk caused by common voltage coupling effect.
According to embodiments of the present invention, source electrode driver includes driving signal generator and n switching switch.Driving signal produces
Raw device generates the relevant n group driving signal of row image data, and each group drives comprising a positive polarity driving signal and a negative polarity
Signal.There are two input terminals for each switching switch tool, receive two driving signals of respective sets, there are two each switching switch tools
Output end.When executing horizontal n dot inversion, wherein n is the integer greater than one, wherein the first output end of each switching switch connects
It is connected to 2n one of the preceding n reverse drive signal being driven reverse in signal, and second output terminal is connected to 2n reversion and drives
One of rear n reverse drive signal in dynamic signal.
Detailed description of the invention
Figure 1A and Figure 1B shows the functional block diagram of the source electrode driver of the horizontal n dot inversion of the embodiment of the present invention.
Fig. 2A and Fig. 2 B shows the functional block diagram of the source electrode driver of the dot inversion of the embodiment of the present invention.
Fig. 3 shows the schematic diagram of the switching switch of Figure 1A/Figure 1B and Fig. 2A/Fig. 2 B.
Accompanying drawings symbol description
100 source electrode drivers
11 driving signal generators
12 switching switches
A1~A6 positive polarity driving signal
B1~B6 negative polarity driving signal
Out1~out12 is driven reverse signal
S1 first switch
S2 second switch
S3 third switch
S4 the 4th is switched
S5 the 5th is switched
S6 the 6th is switched
Specific embodiment
Figure 1A and Figure 1B show the horizontal n point of the embodiment of the present invention, and (1) horizontal n dot or HnDot, n are greater than
The functional block diagram of the source electrode driver 100 of reversion.Figure 1A and Figure 1B illustrated embodiment using 6 points of level (H6Dot) reversions as
It illustrates, but not limited to this.
The source electrode driver 100 of the present embodiment includes driving signal generator 11, generates the relevant n group of row image data
(such as the 1st~6 group of diagram) driving signal, each group includes a positive polarity driving signal and a negative polarity driving signal, example
Such as the 1st group of positive polarity driving signal A1 and negative polarity driving signal B1.
The source electrode driver 100 of the present embodiment also includes n switching switch 12.There are two inputs for each tool of switching switch 12
End, receives two driving signals of respective sets.Also that is, first input end receives the positive polarity driving signal of respective sets, and second
Input terminal then receives the negative polarity driving signal of respective sets.There are two output ends for each tool of switching switch 12, wherein the first output
End is connected to 2n one of the preceding n reverse drive signal being driven reverse in signal, and second output terminal is then connected to 2n
One of the rear n reverse drive signal being driven reverse in signal.By taking first (top) of Figure 1A switches switch 12 as an example,
First output end is connected to one of preceding 6 reverse drives signal (being driven reverse signal out1 in this example for first), and second
One of 6 reverse drive signals (being driven reverse signal out7 in this example for the 7th) after output end is then connected to.Remaining switching
Switch 12, which is also assigned according to principle of identity, to be connected, but each reverse drive signal only assigns and is connected to a switching switch 12.
During frame (frame) at the beginning, each switching switch 12 is forward switched, also that is, the first output end is electric
Property is connected to first input end, and second output terminal is electrically connected to the second input terminal.Whereby, as shown in Figure 1A, source drive
Device 100 can produce continuous n positive polarity and be driven reverse signal (such as out1~out6), and and then continuous n negative polarity is anti-
Turn driving signal (such as out7~out12).
During next frame, as shown in Figure 1B, each switching switch 12 carries out intersection switching, also that is, the first output end is electric
Property is connected to the second input terminal, and second output terminal is electrically connected to first input end.Whereby, as shown in Figure 1B, source drive
Device 100 can produce continuous n negative polarity and be driven reverse signal (such as out1~out6), and and then continuous n positive polarity is anti-
Turn driving signal (such as out7~out12).
In the present embodiment, when sequence controller (timing controller, not shown in the figures) detects specific shadow
When as pattern, in order to avoid or reduce crosstalk caused by common voltage coupling effect, source electrode driver 100 can execute horizontal n
(1) HnDot, n are greater than to be inverted point.In the absence of specific image pattern, source electrode driver 100 can restore to execute general point
It inverts (dot inversion), or can be described as H1ot reversion.
Fig. 2A and Fig. 2 B shows the functional block diagram of the source electrode driver 100 of the dot inversion of the embodiment of the present invention.And figure
Unlike 1A/ Figure 1B, the first output end of each switching switch 12, second output terminal are respectively connected to n group and are driven reverse letter
The reverse drive signal of respective sets in number.By taking first (top) of Fig. 2A switches switch 12 as an example, the first output end connects
It is connected to first reverse drive signal in the 1st group of reverse drive signal and (is driven reverse signal in this example for first
Out1), and second output terminal is then connected to second reverse drive signal in the 1st group of reverse drive signal (in this example
Signal out2 is driven reverse for second).Remaining switching switch 12, which is also assigned according to principle of identity, to be connected.
During frame at the beginning, each switching switch 12 is forward switched, also that is, the first output end is electrically connected to
First input end, and second output terminal is electrically connected to the second input terminal.Whereby, as shown in Figure 2 A, source electrode driver 100
It generates positive polarity and negative polarity is alternately driven reverse signal (such as out1~out12).
During next frame, as shown in Figure 2 B, each switching switch 12 carries out intersection switching, also that is, the first output end is electric
Property is connected to the second input terminal, and second output terminal is electrically connected to first input end.Whereby, as shown in Figure 2 B, source drive
Device 100 can produce positive polarity and negative polarity is alternately driven reverse signal, but its polarity is in contrast to polarity shown in Fig. 2A.
It is equally applicable to a little instead to allow switching switch 12 to be both applicable to horizontal n point (HnDot) reversion (Figure 1A/Figure 1B)
Turn (Fig. 2A/Fig. 2 B), the structure of switching switch 12 can be as shown in Figure 3.It (is most pushed up with the first of Figure 1A/Figure 1B and Fig. 2A/Fig. 2 B
End) for switching switch 12, first switch S1 and second switch S2 are forward connected to respective sets in n group reverse drive signal
It is driven reverse signal.When closing, reverse drive signal as shown in Figure 2 A is generated.Third switch S3 intersects with the 4th switch S4
It is connected to the reverse drive signal that n group is driven reverse respective sets in signal.When closing, reversion as shown in Figure 2 B is generated to drive
Dynamic signal.5th switch S5 be connected to the second input terminal with 2n reverse drive signal in rear n reverse drive signal it
One (in this example between out7).When first switch S1 and the 5th switch S5 is closed, reversion as shown in Figure 1A is generated
Driving signal.6th switch S6 is connected to the rear n reverse drive signal that first input end is driven reverse in signal with 2n
One of (in this example between out7).When third switch S3 and the 6th switch S6 are closed, generate as shown in Figure 1B anti-
Turn driving signal.
The foregoing is only a preferred embodiment of the present invention, the protection scope being not intended to limit the invention；It is all its
It should be included in protection scope of the present invention without departing from the lower equivalent change or modification completed of revealed spirit is invented
It is interior.
Claims (9)
1. a kind of source electrode driver, includes:
One driving signal generator generates the relevant n group driving signal of row image data, and each group drives comprising a positive polarity
Signal and a negative polarity driving signal；And
N switching switch, there are two input terminals for each switching switch tool, receive two driving signals of respective sets, each switching
There are two output ends for switch tool；
When executing horizontal n dot inversion, wherein n is the integer greater than one, wherein the first output end connection of each switching switch
One of the preceding n reverse drive signal being driven reverse in signal to 2n, and second output terminal is connected to 2n reverse drive
One of rear n reverse drive signal in signal,
When executing horizontal n dot inversion, during frame at the beginning, each switching switch is forward switched, whereby, the source electrode
Driver generates continuous n positive polarity and is driven reverse signal, and and then continuous n negative polarity is driven reverse signal；In next frame
Period, each switching switch carry out intersection switching, and whereby, which generates continuous n negative polarity and be driven reverse signal,
And then continuous n positive polarity is driven reverse signal,
When executing horizontal n dot inversion, the first output end is electrically connected to first input end by the forward switching of switching switch,
And second output terminal is electrically connected to the second input terminal；Intersect switching and the first output end is electrically connected to the second input terminal, and
Second output terminal is electrically connected to first input end.
2. source electrode driver according to claim 1, wherein the first input end of each switching switch receives respective sets
Positive polarity driving signal, and the second input terminal then receives the negative polarity driving signal of respective sets.
3. source electrode driver according to claim 1, wherein each reverse drive signal, which is only assigned, is connected to these switchings
One in switch.
4. source electrode driver according to claim 1 executes dot inversion.
5. source electrode driver according to claim 4, when executing dot inversion, wherein the first output of each switching switch
End, second output terminal are respectively connected to the reverse drive signal that n group is driven reverse respective sets in signal.
6. source electrode driver according to claim 5, when executing dot inversion, during frame at the beginning, each switching
Switch is forward switched, and whereby, which generates positive polarity and negative polarity is alternately driven reverse signal；In next
During frame, each switching switch carries out intersection switching, and whereby, which generates negative polarity and alternately invert with positive polarity
Driving signal, polarity is in contrast to the polarity during frame at the beginning.
7. source electrode driver according to claim 6, when executing dot inversion, wherein the forward switching of switching switch will
First output end is electrically connected to first input end, and second output terminal is electrically connected to the second input terminal；Intersect switching for the
One output end is electrically connected to the second input terminal, and second output terminal is electrically connected to first input end.
8. source electrode driver according to claim 1, wherein the switching, which switchs, includes:
First switch, second switch are forward connected to the reverse drive signal that n group is driven reverse respective sets in signal, when this
When first switch, second switch closure, which generates positive polarity and negative polarity is alternately driven reverse signal；
Third switch, the 4th switch, cross-connect to the reverse drive signal that n group is driven reverse respective sets in signal, when this
When third switch, the 4th close the switch, which generates negative polarity and positive polarity is alternately driven reverse signal；
5th switch, be connected to the second input terminal and one of rear n reverse drive signal in 2n reverse drive signal it
Between, when the first switch, the 5th close the switch, which generates continuous n positive polarity and is driven reverse signal, tightly
Then continuous n negative polarity is driven reverse signal；And
6th switch, be connected to first input end and one of rear n reverse drive signal in 2n reverse drive signal it
Between, when third switch, the 6th close the switch, which generates continuous n negative polarity and is driven reverse signal, tightly
Then continuous n positive polarity is driven reverse signal.
9. source electrode driver according to claim 1 includes also time schedule controller, when it detects specific image pattern
When, which executes horizontal n dot inversion, and wherein n is the integer greater than one；In the absence of specific image pattern,
The source electrode driver executes dot inversion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510219246.2A CN106205512B (en) | 2015-05-04 | 2015-05-04 | Source electrode driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510219246.2A CN106205512B (en) | 2015-05-04 | 2015-05-04 | Source electrode driver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106205512A CN106205512A (en) | 2016-12-07 |
| CN106205512B true CN106205512B (en) | 2019-08-23 |
Family
ID=57457801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510219246.2A Active CN106205512B (en) | 2015-05-04 | 2015-05-04 | Source electrode driver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106205512B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110782818B (en) * | 2018-07-25 | 2023-09-19 | 夏普株式会社 | Display device and inspection method for display device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1855210A (en) * | 2005-04-18 | 2006-11-01 | 恩益禧电子股份有限公司 | LCD and its drive circuit |
| JP2008292927A (en) * | 2007-05-28 | 2008-12-04 | Seiko Epson Corp | Integrated circuit device, display device, and electronic equipment |
| TW200926125A (en) * | 2007-12-14 | 2009-06-16 | Novatek Microelectronics Corp | Pixel driving method and circuit |
| CN103680435A (en) * | 2012-09-03 | 2014-03-26 | 三星电子株式会社 | Source driver, method thereof, and apparatuses having the same |
| CN103839524A (en) * | 2012-11-21 | 2014-06-04 | 联咏科技股份有限公司 | Liquid crystal display, source drivers thereof and control method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI414865B (en) * | 2009-03-06 | 2013-11-11 | Au Optronics Corp | Liquid crystal device with multi-dot inversion |
| JP5025025B2 (en) * | 2009-05-15 | 2012-09-12 | 株式会社ジャパンディスプレイセントラル | Liquid crystal display device and driving method of liquid crystal display device |
| TWI522982B (en) * | 2010-12-31 | 2016-02-21 | 友達光電股份有限公司 | Source driver |
| US9607561B2 (en) * | 2012-08-30 | 2017-03-28 | Sharp Kabushiki Kaisha | Liquid crystal display device and method for driving same |
-
2015
- 2015-05-04 CN CN201510219246.2A patent/CN106205512B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1855210A (en) * | 2005-04-18 | 2006-11-01 | 恩益禧电子股份有限公司 | LCD and its drive circuit |
| JP2008292927A (en) * | 2007-05-28 | 2008-12-04 | Seiko Epson Corp | Integrated circuit device, display device, and electronic equipment |
| TW200926125A (en) * | 2007-12-14 | 2009-06-16 | Novatek Microelectronics Corp | Pixel driving method and circuit |
| CN103680435A (en) * | 2012-09-03 | 2014-03-26 | 三星电子株式会社 | Source driver, method thereof, and apparatuses having the same |
| CN103839524A (en) * | 2012-11-21 | 2014-06-04 | 联咏科技股份有限公司 | Liquid crystal display, source drivers thereof and control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106205512A (en) | 2016-12-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102707525B (en) | Array substrate, liquid crystal display panel and liquid crystal display device | |
| CN100443961C (en) | Liquid crystal display | |
| CN102044229B (en) | Liquid crystal display device, driving device for liquid crystal display panel, and liquid crystal display panel | |
| CN103761944A (en) | Gate drive circuit, display device and drive method | |
| CN102789767A (en) | Gate driver and liquid crystal display including the same | |
| CN105869599B (en) | A kind of array substrate and its driving method and display panel | |
| US8963912B2 (en) | Display device and display device driving method | |
| CN202008813U (en) | Grid driver of TFT LCD, drive circuit, and LCD | |
| CN103208265B (en) | Liquid crystal display device polarity reversal driving method, device and liquid crystal display device | |
| CN105118470A (en) | Grid electrode driving circuit and grid electrode driving method, array substrate and display panel | |
| CN102592552A (en) | Driving device and method for liquid crystal display device | |
| JP5676219B2 (en) | Driving device for liquid crystal display panel | |
| CN104952401A (en) | Electronic apparatus and display driver | |
| JP2005134864A (en) | Liquid crystal display panel and its driving circuit | |
| CN106652930B (en) | Display panel and its data drive circuit and display device | |
| US20160173861A1 (en) | 3d panel, method for driving 3d panel and electronic device | |
| CN102214428B (en) | Gate driving circuit and driving method therefor | |
| CN104952407A (en) | Source driver of liquid crystal panel as well as drive method of source driver | |
| CN101131808B (en) | Liquid crystal display device and its driving method | |
| CN107633823A (en) | The polarity reversal driving method and source electrode driver of liquid crystal display | |
| CN104269153A (en) | Liquid crystal display panel, driving structure and driving method thereof | |
| CN107831614A (en) | Pixel driving framework and display device | |
| CN103310754B (en) | Driving device and driving method | |
| JP2009064002A (en) | Device for reversing and controlling polarity of signal on data line in liquid crystal display panel, and method of the same | |
| CN102087825B (en) | source driver |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |