CN101499242B - Horizontal drive device, driving device and correlated sequence type transmission circuit apparatus - Google Patents
Horizontal drive device, driving device and correlated sequence type transmission circuit apparatus Download PDFInfo
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- CN101499242B CN101499242B CN2008100032331A CN200810003233A CN101499242B CN 101499242 B CN101499242 B CN 101499242B CN 2008100032331 A CN2008100032331 A CN 2008100032331A CN 200810003233 A CN200810003233 A CN 200810003233A CN 101499242 B CN101499242 B CN 101499242B
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Abstract
A sequential transmission circuit device used for a liquid crystal display device is applied to reduce transient current and comprises a receiving end used to receive a serial datum; a coded conversion unit sequence, which is coupled to the receiving end, includes a plurality of coded conversion units connected in series as a sequence and is used to convert the serial datum according to a plurality of dissimilar coding principles so as to generate a plurality of coded conversion results; and a plurality of output ends that are respectively coupled to each coded conversion unit in the coded conversion unit sequence and used for outputting a plurality of coded conversion results.
Description
Technical field
The present invention relates to a kind of horizontal drive device, drive unit and correlated sequence type transmission circuit apparatus that is used for a liquid crystal indicator, be particularly related to a kind of effect of utilizing the different coding mode to come average level to change, make level change caused moment power consumption minimizing, and then promote horizontal drive device, drive unit and the correlated sequence type transmission circuit apparatus of the reliability of circuit.
Background technology
Along with the continuous development of display technique, market is also increasing for the requirement of liquid crystal panel size.The increase of liquid crystal panel size can make that picture element quantity and required image transmitted data volume increase on the panel, causes transfer efficiency to reduce.Therefore, in order to improve the problems referred to above, prior art provides a kind of sequence type data transmission structure, and it is to transmit video data with the list type transmission mode.
Please refer to Fig. 1, Fig. 1 is the existing synoptic diagram that is used for a drive unit 10 of a display panels.Drive unit 10 is sequence type data transmission structures, and it comprises a sequential control circuit (TimingController) 102 and source electrode drive circuit SD_1～SD_n.Sequential control circuit 102 is in order to carry out Flame Image Process, to export video data to source electrode drive circuit SD_1.Source electrode drive circuit SD_1～SD_n is serially connected with a sequence, in order to the output data line signal to data line group DLS_1～DLS_n.Wherein, each data line group can comprise one or many data lines.The function mode of source electrode drive circuit SD_1～SD_n is as follows, when source electrode drive circuit SD_1 receives the video data that sequential control circuit 102 exported, source electrode drive circuit SD_1 can capture the data corresponding to data line group DLS_1, the line correlation of going forward side by side exports result to data line group DLS_1 after handling.Simultaneously, source electrode drive circuit SD_1 can transfer to source electrode drive circuit SD_2 with the video data that sequential control circuit 102 is exported, then driving circuit SD_2 can capture the data corresponding to data line group DLS_2, after carrying out relevant treatment, export result to data line group DLS_2, and the video data that source electrode drive circuit SD_1 is transmitted transfers to source electrode drive circuit SD_3.By that analogy, drive unit 10 can show complete picture on display panels.
Therefore, by existing drive unit 10, but the display panels improving data transmission efficiency.Yet, when changing, can cause the level of video data the power consumption of drive unit 10 to increase, and for example 0 transfers 1 or 1 to and transfers 0 to.In this case, may cause drive unit 10 to cause the transition failure because of big electric current causes unusual voltage rise or pressure drop, or be that the temperature rising causes display frame Yin Gaowen to cause the unusual of demonstration, what is more, high temperature more likely causes the semiconductor circuit reliability problems.
Summary of the invention
Therefore, fundamental purpose of the present invention promptly is to provide a kind of horizontal drive device, drive unit and correlated sequence type transmission circuit apparatus that is used for a liquid crystal indicator.
The present invention discloses a kind of sequence type transmission circuit apparatus that is used for a liquid crystal indicator, includes a receiving end, is used for receiving serial datum; One transcoder unit sequence is coupled to this receiving end, includes a plurality of transcoder units and is serially connected with a sequence, is used for changing this serial data according to a plurality of different cryptoprinciples, to produce a plurality of code conversion results; And a plurality of output terminals, be respectively coupled to each transcoder unit in this transcoder unit sequence, be used for exporting these a plurality of code conversion results.
The present invention discloses a kind of horizontal drive device that is used for a liquid crystal indicator in addition, includes the serial datum converter, is coupled to the time schedule controller of this liquid crystal indicator, is used for a parallel data is converted to serial datum; One transcoder unit sequence is coupled to this serial data converter, includes a plurality of transcoder units and is serially connected with a sequence, is used for changing this serial data according to a plurality of different cryptoprinciples, to produce a plurality of code conversion results; One breech lock module is coupled to this transcoder unit sequence, is used for depositing this a plurality of code conversion results; And a decoder module, be coupled to this breech lock module, be used for these a plurality of code conversion results being decoded, to produce a plurality of horizontal-drive signals according to these a plurality of different cryptoprinciples.
The present invention discloses a kind of drive unit that is used for a liquid crystal indicator in addition, includes time schedule controller, is used for producing a video data; One display module is coupled to this line driver sequence, is used for a plurality of horizontal-drive signals of being exported according to this line driver sequence, shows this video data; One line driver sequence is coupled to this time schedule controller, includes a plurality of line drivers and is serially connected with a sequence, is used for transmitting this video data according to a plurality of different cryptoprinciples.Wherein each line driver includes a receiving end, is used for receiving this video data; One transcoder unit is coupled to this receiving end, is used for changing this video data that this receiving end receives, to produce a code conversion result according to a cryptoprinciple in these a plurality of different cryptoprinciples; One signal processing unit is coupled to this transcoder unit, is used for handling this video data, to export a horizontal-drive signal; And an output terminal, be coupled to this transcoder unit, be used for exporting this code conversion result to another line driver.
Description of drawings
Fig. 1 is the synoptic diagram of existing drive unit.
Fig. 2 is the synoptic diagram of the embodiment of the invention one sequence type transmission circuit apparatus.
Fig. 3 is the synoptic diagram of the embodiment of the invention one horizontal drive device.
Fig. 4 is the synoptic diagram of the embodiment of the invention one horizontal drive device.
Fig. 5 is the synoptic diagram of the embodiment of the invention one horizontal drive device.
Fig. 6 is the coding schedule of a binary code and Gray code.
Fig. 7 is the synoptic diagram of a binary code to the converting system of Gray code.
Fig. 8 is the synoptic diagram of the demoder of a binary code.
Fig. 9 is the synoptic diagram of the demoder of a Gray code.
Figure 10 is the synoptic diagram of the embodiment of the invention one drive unit.
The reference numeral explanation
10,100 drive units
102 sequential control circuits
SD_1～SD_n source electrode drive circuit
DLS_1～DLS_n data line group
20 circuit arrangements
202 receiving ends
204,304 transcoder unit sequences
C_1～C_n transcoder unit
OP_1～OP_n output terminal
30,40,50 horizontal drive devices
302,402,502 serial data converters
306,410,510 breech lock modules
308,412,512 decoder modules
310,1002 time schedule controllers
312,314 breech lock sequences
L1, L2 latch unit
D_1～D_n, DAC1, DAC2 demoder
404,504,406,506 transcoder units
1004 line driver sequences
1006 display modules
C10_1～C10_n line driver.
Embodiment
Please refer to Fig. 2, Fig. 2 is used for the synoptic diagram of a circuit arrangement 20 of list type transmission for the present invention.Circuit arrangement 20 can reduce immediate current, and it comprises a receiving end 202, a transcoder unit sequence 204 and output terminal OP_1～OP_n.Sequence type transmission circuit apparatus 20 receives serial data by receiving end 202, serial data is sent into transcoder unit sequence 204 again.Transcoder unit sequence 204 includes transcoder unit C_1～C_n and is serially connected with a sequence, is used for according to different cryptoprinciple, and the conversion serial data is to export the different coding transformation result by output terminal OP_1～OP_n.In other words, transcoder unit C_1 can carry out code conversion to the serial data that receiving end 202 is received, and by output terminal OP_1 output encoder transformation result.Then, transcoder unit C_2 can carry out code conversion to the code conversion result of transcoder unit C_1, and by output terminal OP_2 output encoder transformation result.By that analogy, by transcoder unit C_1～C_n, circuit arrangement 20 can pass through output terminal OP_1～different code conversion result of OP_n output.
When identical data was encoded in the different coding mode, its coding result was also inequality.Therefore, if raw data is 01, after encoding in the different coding mode, its possibility of result is 00,01,10,11.In other words, the transition situation of raw data may change with different coded systems.Therefore, by circuit arrangement 20, when serial data generation transition that receiving end 202 is received, among the code conversion result that transcoder unit C_1～C_n is exported, may only there be part code conversion result that the data state switching of comprising is arranged.That is to say that circuit arrangement 20 can stagger the situation that data state switching takes place, changing the immediate current that is caused with the level of avoiding serial data increases.
What pay special attention to is, circuit arrangement 20 shown in Figure 2 is one embodiment of the invention, and this area tool knows that usually the knowledgeable is when doing suitable variation and being not limited to structure shown in Figure 2.For example, in circuit arrangement 20, the data that receiving end 202 is received should be serial data.If when the data that received of receiving end 202 are not serial data but parallel data, then can be coupled to before the receiving end 202 by walking to serial convertor in the lump in addition, parallel data be converted to serial data.On the other hand, in Fig. 2, receiving end 202 is coupled to the most last transcoder unit, i.e. transcoder unit C_1 is in order to be sent to serial data transcoder unit C_1.In addition, receiving end 202 can be coupled between wantonly two transcoder units in addition, between transcoder unit C_1 and C_2, or directly be coupled to each transcoder unit, also can reach the effect that reduces immediate current.In addition, the quantity of transcoder unit also can determine according to different demands, and its corresponding codes principle also do not have specific limited, as binary coding, Gray code, Hamming code, product code etc.
In brief, circuit arrangement 20 is by the combination of list type transmission structure and different transcoder unit, and the effect of utilizing different coding mode average level to change makes level change caused moment power consumption minimizing, and then promotes the reliability of circuit.
As previously mentioned, circuit arrangement 20 is to be applied in the list type transmission structure, reduces level and changes caused moment power consumption, and then promote the reliability of circuit.Wherein, above-mentioned list type transmission structure is not limited to particular system, so long as by the list type transmission mode, the system of transmission signals or data all is applicable to the present invention.For instance, please refer to Fig. 3, Fig. 3 is used for the synoptic diagram of the horizontal drive device 30 of a liquid crystal indicator for the present invention.Horizontal drive device 30 includes serial datum converter 302, a transcoder unit sequence 304, a breech lock module 306 and a decoder module 308.Serial data converter 302 is coupled to the time schedule controller 310 of liquid crystal indicator, is used for parallel data is converted to serial datum.Transcoder unit sequence 304 is coupled to serial data converter 302, and it includes transcoder unit C_1～C_n.Transcoder unit C_1～C_n can be according to different cryptoprinciples, and the coded system of the data that conversion is received is to produce a plurality of code conversion results.Breech lock module 306 is coupled to transcoder unit sequence 304, is used for depositing the code conversion result, and in this example, it is made up of 312,314 of breech lock sequences, in order to the code conversion result is deposited among a plurality of latch unit L1 and the L2.Decoder module 308 is coupled to breech lock module 306, includes demoder D_1～D_n, is used for cryptoprinciple according to transcoder unit C_1～C_n, and 306 stored code conversion results decode to the breech lock module, to produce corresponding horizontal-drive signal.
When identical data was encoded in the different coding mode, its coding result was also inequality.Therefore, by horizontal drive device 30, when serial data generation transition that serial data converter 302 is exported, among the code conversion result that transcoder unit C_1～C_n is exported, may only there be part code conversion result that the data state switching of comprising is arranged.That is to say that transcoder unit sequence 304 can stagger the situation that data state switching takes place, changing the immediate current that is caused with the level of avoiding serial data increases.
What pay special attention to is, horizontal drive device 30 shown in Figure 3 is one embodiment of the invention, and this area tool knows that usually the knowledgeable is when doing suitable variation and being not limited to structure shown in Figure 3.For example, in Fig. 3, serial data converter 302 is coupled to the most last transcoder unit, i.e. transcoder unit C_1 is in order to be sent to serial data transcoder unit C_1.In addition, serial data converter 302 can be coupled between wantonly two transcoder units in addition, as be coupled between transcoder unit C_1 and the C_2, or directly be coupled to each transcoder unit, also can reach the effect that reduces immediate current.In addition, the quantity of transcoder unit also can determine according to different demands, and its corresponding codes principle also do not have specific limited, as binary coding, Gray code, Hamming code, product code etc.
For instance, please refer to Fig. 4, Fig. 4 is the synoptic diagram of one embodiment of the invention horizontal drive device 40.Horizontal drive device 40 includes serial datum converter 402, transcoder unit 404,406, a breech lock module 410 and a decoder module 412.The structure of horizontal drive device 40 is similar to horizontal drive device shown in Figure 3 30, and the associative operation mode is not given unnecessary details at this.Horizontal drive device 40 is that with the difference of horizontal drive device 30 horizontal drive device 40 only comprises two transcoder units, and serial data converter 402 is coupled between the two.In this case, decoder module 412 only comprises two kinds of demoders (DAC1 and DAC2), corresponds respectively to two kinds of coded systems, thereby can save complexity, reduces production costs.Therefore, by horizontal drive device 40, transcoder unit the 404, the 406th is encoded to data with different coded systems, thereby the situation that data state switching takes place can be staggered, and changing the immediate current that is caused with the level of avoiding serial data increases.
Please refer to Fig. 5, Fig. 5 is the synoptic diagram of one embodiment of the invention horizontal drive device 50.Horizontal drive device 50 includes serial datum converter 502, transcoder unit 504,506, a breech lock module 510 and a decoder module 512.The structure of horizontal drive device 50 is similar to horizontal drive device 40 shown in Figure 4 to principle of work, and difference is that serial data converter 502 only is coupled to transcoder unit 504.Similarly, horizontal drive device 50 also can stagger the situation that data state switching takes place, and changing the immediate current that is caused with the level of avoiding serial data increases.
The horizontal drive device 40 of Fig. 4 is all embodiments of the invention with the horizontal drive device 50 of Fig. 5, it is by two kinds of coded systems the situation that data state switching takes place to be staggered, and pairing cryptoprinciple does not have specific limited, and this area tool knows that usually the knowledgeable is when coded system that can be suitable according to required selection.With binary code and Gray code is example, please refer to Fig. 6, and Fig. 6 shows the coding schedule of a binary code and Gray code.As shown in Figure 6, when numerical value changed 7 into by 0, pairing binary code was to change 111 into, the transition that expression meeting appearance is 3 by 000; Same, when numerical value changed 7 into by 0, pairing Gray code was to change 100 into by 000, only 1 transition can occur.Therefore, when numerical value changed 7 into by 0, the coding as if in conjunction with above-mentioned dual mode on average had only 2.5 transition.In other words, when in conjunction with above-mentioned two kinds of coded systems, horizontal drive device 40 can effectively reduce the transition situation of position with horizontal drive device 50, and immediate current is reduced, and causes phenomenons such as IC is overheated to take place to avoid big electric current.
On the other hand,, can utilize XOR (XOR) logical circuit as shown in Figure 7, binary code is converted to Gray code about the realization of Gray code.In addition, about the realization of demoder DAC1, DAC2, please refer to Fig. 8 and Fig. 9, Fig. 8 is the synoptic diagram of the demoder 80 of a binary code, and Fig. 9 is the synoptic diagram of the demoder 90 of a Gray code.In Fig. 8 and Fig. 9, V1～V8 represents 8 different magnitudes of voltage, corresponds respectively to 8 data numerical value (promptly 0 to 7), and D1, D1B represent first position and transition thereof, and D2, D2B represent second position and transition thereof, and D3, D3B represent the 3rd position and transition thereof.Demoder the 80, the 90th, according to D1, D1B, D2, D2B, D3, D3B, the unlatching of change-over switch or close is to export correct magnitude of voltage.For instance, if demoder 80,90 data that received are 100, demoder 80 meeting output voltage values V5, demoder 90 is output voltage values V8 then.
What pay special attention to is, Fig. 8 and demoder 80,90 shown in Figure 9 only are used for illustrating the implementation of the demoder of binary code and Gray code, and other coded system and corresponding decoder also can be used for the present invention.
As previously mentioned, the present invention is used for the list type transmission structure, reduces level and changes caused moment power consumption, and then promote the reliability of circuit.Therefore, so long as by the list type transmission mode, the system of transmission signals or data all is applicable to the present invention.Please refer to Figure 10, Figure 10 is used for the synoptic diagram of the drive unit 100 of a liquid crystal indicator for the embodiment of the invention.Drive unit 100 comprises time schedule controller 1002, a line driver sequence 1004 and a display module 1006.Time schedule controller 1002 is used for producing video data.Line driver sequence 1004 includes line driver C10_1～C10_n, is used for carrying out signal Processing, and according to different cryptoprinciple, the transmitting and displaying data.In line driver C10_1～C10_n, a transcoder unit is used for according to presetting the video data that the coded system conversion is received, to produce a code conversion result to the next line driver; One signal processing unit is the processes and displays data then, with the output horizontal-drive signal.Therefore, in drive unit 100, each line driver can be encoded to the video data that time schedule controller 1002 is exported according to specific coded system.Because when identical data was encoded in the different coding mode, its coding result was also inequality.Therefore, by drive unit 100, when video data generation transition that time schedule controller 1002 is exported, among the code conversion result that line driver C10_1～C10_n is exported, may only there be part code conversion result that the data state switching of comprising is arranged.That is to say that the situation that line driver C10_1～C10_n can data state switching take place staggers, changing the immediate current that is caused with the level of avoiding serial data increases, thereby prevents the temperature caused picture abnormal case that raises.
What pay special attention to is, drive unit 100 shown in Figure 10 is one embodiment of the invention, and this area tool knows that usually the knowledgeable is when doing suitable variation and being not limited to structure shown in Figure 10.For example, time schedule controller 1002 is coupled between wantonly two line drivers, as is coupled between line driver C10_1 and the C10_2, or directly be coupled to each line driver, also can reach the effect that reduces immediate current.
In sum, the present invention is in the list type transmission structure, uses different code conversion mode to transmit data, comes average level to change the electric current greatly that is caused to utilize different coded systems, thereby reduces moment power consumption, promotes the reliability of circuit.
The above only is preferred embodiment of the present invention, and all equalizations of being done according to the present patent application claim change and modify, and all should belong to covering scope of the present invention.
Claims (14)
1. one kind is used for the circuit arrangement that list type transmits, and in order to reduce immediate current, includes:
One receiving end is used for receiving serial datum;
One transcoder unit sequence is coupled to this receiving end, includes a plurality of transcoder units and is serially connected with a sequence, is used for changing this serial data according to a plurality of different cryptoprinciples, to produce a plurality of code conversion results; And
A plurality of output terminals are respectively coupled to each transcoder unit in this transcoder unit sequence, are used for exporting these a plurality of code conversion results.
2. circuit arrangement as claimed in claim 1, wherein, this receiving end is coupled to and walks to serial convertor in the lump, should and walk to serial convertor and is used for a parallel data is converted to this serial data.
3. circuit arrangement as claimed in claim 1, wherein, this receiving end is coupled to the most last transcoder unit of this transcoder unit sequence.
4. circuit arrangement as claimed in claim 1, wherein, this receiving end is coupled to each transcoder unit of this transcoder unit sequence.
5. circuit arrangement as claimed in claim 1, wherein, this receiving end is coupled in this transcoder unit sequence between one first transcoder unit and one second transcoder unit, and this first transcoder unit and this second transcoder unit are two adjacent transcoder units.
6. horizontal drive device that is used for a liquid crystal indicator includes:
The serial datum converter is coupled to the time schedule controller of this liquid crystal indicator, is used for a parallel data is converted to serial datum output;
One transcoder unit sequence is coupled to this serial data converter, includes a plurality of transcoder units and is serially connected with a sequence, is used for changing this serial data according to a plurality of different cryptoprinciples, to produce a plurality of code conversion results;
One breech lock module is coupled to this transcoder unit sequence, is used for depositing this a plurality of code conversion results; And
One decoder module is coupled to this breech lock module, is used for these a plurality of code conversion results being decoded, to produce a plurality of horizontal-drive signals according to these a plurality of different cryptoprinciples.
7. horizontal drive device as claimed in claim 6, wherein, the most last transcoder unit of this transcoder unit sequence is coupled to this serial data converter.
8. horizontal drive device as claimed in claim 6, wherein, each transcoder unit of this transcoder unit sequence all is coupled to this serial data converter.
9. horizontal drive device as claimed in claim 6, wherein, one first transcoder unit and one second transcoder unit are coupled to this serial data converter in this transcoder unit sequence, and this first transcoder unit and this second transcoder unit are two adjacent transcoder units.
10. circuit arrangement as claimed in claim 6, wherein, this breech lock module includes:
One first breech lock module is coupled to this transcoder unit sequence; And
One second breech lock module is coupled between this first breech lock module and this decoder module.
11. a drive unit that is used for a liquid crystal indicator includes:
Time schedule controller is used for producing a video data;
One line driver sequence is coupled to this time schedule controller, includes a plurality of line drivers and is serially connected with a sequence, is used for transmitting this video data according to a plurality of different cryptoprinciples, and each line driver includes:
One receiving end is used for receiving this video data;
One transcoder unit is coupled to this receiving end, is used for changing this video data that this receiving end receives, to produce a code conversion result according to a cryptoprinciple in these a plurality of different cryptoprinciples;
One signal processing unit is coupled to this transcoder unit, is used for handling this video data, to export a horizontal-drive signal; And
One output terminal is coupled to this transcoder unit, is used for exporting this code conversion result to another line driver; And
One display module is coupled to this line driver sequence, is used for a plurality of horizontal-drive signals of being exported according to this line driver sequence, shows this video data.
12. drive unit as claimed in claim 11, wherein, the previous row driver of this line driver sequence is coupled to this time schedule controller.
13. drive unit as claimed in claim 11, wherein, each line driver of this line driver sequence all is coupled to this time schedule controller.
14. drive unit as claimed in claim 11, wherein, one first line driver and one second line driver are coupled to this time schedule controller in this line driver sequence, and this first line driver and this second line driver are two adjacent line drivers.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008100032331A CN101499242B (en) | 2008-01-28 | 2008-01-28 | Horizontal drive device, driving device and correlated sequence type transmission circuit apparatus |
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| CN2008100032331A CN101499242B (en) | 2008-01-28 | 2008-01-28 | Horizontal drive device, driving device and correlated sequence type transmission circuit apparatus |
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| CN101499242B true CN101499242B (en) | 2011-03-09 |
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| WO2020073231A1 (en) * | 2018-10-10 | 2020-04-16 | 深圳市柔宇科技有限公司 | Goa circuit and display device |
| CN112233613B (en) * | 2020-10-29 | 2021-08-06 | 中国航发南方工业有限公司 | Display panel assembly, display and operation device of gas turbine generator set |
| CN112289257B (en) * | 2020-10-29 | 2021-08-06 | 中国航发南方工业有限公司 | Display and operation device of gas turbine generator set |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5896114A (en) * | 1993-11-11 | 1999-04-20 | Seiko Epson Corporation | Matrix type display device, electronic system including the same and method of driving such a display device |
| CN1959793A (en) * | 2005-11-03 | 2007-05-09 | 友达光电股份有限公司 | Drive circuit of source electrode, and method for reducing signal conversion of drive circuit of source electrode |
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- 2008-01-28 CN CN2008100032331A patent/CN101499242B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5896114A (en) * | 1993-11-11 | 1999-04-20 | Seiko Epson Corporation | Matrix type display device, electronic system including the same and method of driving such a display device |
| CN1959793A (en) * | 2005-11-03 | 2007-05-09 | 友达光电股份有限公司 | Drive circuit of source electrode, and method for reducing signal conversion of drive circuit of source electrode |
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