CN1673812A - Colour managing structure and colour managing method for panel display device, source pole driver and panel display device - Google Patents
Colour managing structure and colour managing method for panel display device, source pole driver and panel display device Download PDFInfo
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- CN1673812A CN1673812A CN 200410030283 CN200410030283A CN1673812A CN 1673812 A CN1673812 A CN 1673812A CN 200410030283 CN200410030283 CN 200410030283 CN 200410030283 A CN200410030283 A CN 200410030283A CN 1673812 A CN1673812 A CN 1673812A
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Abstract
The color managing structure for display device includes one display array unit, several gate drivers, several source drivers and one time sequence control unit. The gate drivers and the source drivers drive the display array unit to display image. The time sequence control unit outputs several signals to the gate drivers and the source drivers driving the display array unit, while outputting one time sequence signal and one color managing data to these source drivers.
Description
Technical field
The invention relates to a kind of display device, and particularly relevant for a kind of color management structure and color management method of display apparatus.
Background technology
In recent years, because the existing very big progress and development of image display technique, traditional cathode-ray tube had most and was replaced by so-called panel display.Panel display generally commonly the membrane transistor LCD (thin-film transistor liquid crystal display, TFT-LCD).In addition, utilize the light emitting diode or the panel display of electricity slurry day by day general.
The display part of panel display is made of pixel array.Its pixel array generally is the matrix of determinant, and picture element according to the image document of dot matrixization, drives corresponding picture element then by driver control.Picture element can show specified color by the control of driver in the specified moment.Yet, still needing color correction by the color of picture element, for example gamma curve correction just can reach the ideal color of corresponding human eye sense organ.Below be that example illustrates the arrangement of color correction traditionally with the membrane transistor LCD.
Fig. 1 illustrates the calcspar of the source electrode driver of conventional liquid crystal.LCD uses source electrode driver and gate pole driver to drive picture element.And the correction data of color can be input to source electrode driver to revise the color that shows.Source electrode driver generally comprises shift registor (shiftregister) 100 as shown, line bolt lock device (line latch) 102, accurate bit shift device (level shifter) 104, digital-to-analog converter (digital to analog converter, DAC) 106, output buffer (outputbuffer) 108, signal receiver (signal receiver) 110, data working storage (data register) 112.Wherein, digital-to-analog converter 106 can receive the potential value VGMA1～VGMA14 of the gamma color correction curve of parallel input.Signal receiver 110 receiving inputted signals for example receive the coherent signal of RSDS.In addition, the signal Y1 that output buffer 108 is exported, Y2 ..., then in order to drive the demonstration of picture element.Conventional source driver as shown in Figure 1 is general known technology, is not described in detail.
With regard to traditional liquid crystal indicator, its basic framework comprises that a TFT-LCD pixel array 120 is with display image as shown in Figure 2.Driven by multiple source driver 122 and a plurality of gate pole driver 124 respectively in the array of pixel array 120 row with row.Power supply unit 130, for example DC-DC (DC/DC) converter provides voltage to source electrode driver 122 and gate pole driver 124.In addition, one ASIC wafer 126 (Application Specification IC, ASIC), according to input data from connector 128, can produce suitable clock signal and color data etc., the data signal (shown in the output arrow) that corresponding source electrode driver 122 is required with gate pole driver 124 outputs.The data signal that it is required for what those skilled in the art were familiar with, is not described in detail.General ASIC wafer 126 can comprise receiver 126a, RSDS/TTL forwarder (RSDS/TTLtransmitter) 126b, reach time schedule controller 126c.
In addition, traditional liquid crystal indicator comprises a gamma (gamma) amending unit 132 again, gives each source electrode driver 122 with the color correction voltage of a plurality of gamma curve of parallel output, to revise the color of picture element.
In this, the required dividing potential drop of gamma curve is that the electric resistance partial pressure by the system line plate is provided.Again, for the application of TV, for better color representation or color management are arranged, ideally, corresponding other RGB (RGB) can have one group of gamma curve individually, promptly so-called 3-gamma design.So, divider resistance on the system line plate and electric capacity of voltage regulation certainly will increase to three times again.This can increase cost with work.Again with the needs of driver of a large amount of bit numbers of work, more in order there to be preferable gamma to change (gamma fitting) in right amount, the gamma data also is increased to 14 or more from general 10 groups.If add the design of 3-gamma, can cause the size of wiring board to increase, the cost of system and weight also can increase with work.And this traditional design, the gamma data can't the elasticity adjustment.But panel designs is often because of different brightness and different liquid crystal, and the resistance on the necessary Adjustment System wiring board.Adopt the design of this resistance, often need the time of many fine adjustment, the delay that causes developing time-histories at wiring board (resister on PCB).
Summary of the invention
The object of the invention one is exactly that a kind of color management structure of display device is being provided, and it does not need as the gamma correction unit that is provided with respectively traditionally to provide the color management data to source electrode driver.The present invention by the wafer of timing control unit, also provides a color management data to source electrode driver simultaneously.This color management data is used via source electrode driver decoding and conversion back.So, can save in a large number in traditional gamma correction unit, be used for the resistance of dividing potential drop.The also therefore dimension and weight of economy system in a large number, and then can reduce the foregoing problems of conventional art.
The present invention proposes a kind of color management structure of display device, comprises an array of display unit, a plurality of gate pole driver, multiple source driver and a sequential control module.Those gate pole drivers and those source electrode drivers drive this array of display unit with display image.This timing control unit is exported a plurality of signals and is given those gate pole drivers and those source electrode drivers to drive this array of display unit, and this timing control unit also exports a clock pulse signal and a color management data is given those source electrode drivers.
The present invention proposes a kind of variation of color management structure of display device in addition, comprises an array of display unit, a plurality of gate pole driver, multiple source driver, a sequential control module and a color management interface system.Those gate pole drivers and those source electrode drivers drive this array of display unit with display image.Timing control unit is exported a plurality of signals and is given those gate pole drivers and those source electrode drivers driving this array of display unit, and exports a clock pulse signal.The color management interface system is coupled between this timing control unit and those source electrode drivers, gives those source electrode drivers to produce a color management data.
The object of the invention one is in addition providing a kind of source electrode driver exactly, is used for a panel and shows device to drive an array of display unit.This source electrode driver can receive the color management data of tandem, converts parallel a plurality of color management data to carry out the picture element color management.
The invention provides a kind of source electrode driver, comprise the one source pole driving circuit, driving this array of display unit, and a data interface able to programme, receive a color management data and a clock pulse signal, and a plurality of color electric potential signals of parallel output use for this source electrode drive circuit.
The object of the invention one in addition is exactly that a kind of color management method of display apparatus is being provided, and it needn't be by the gamma correction unit that is provided with respectively traditionally to provide the color management data to source electrode driver.The present invention can save in a large number in traditional gamma correction unit, is used for the resistance of dividing potential drop.The also therefore dimension and weight of economy system in a large number, and then can reduce the foregoing problems of conventional art.
The color management method of display apparatus of the present invention, be applicable to a display apparatus, wherein this display apparatus comprises an array of display unit, a plurality of drivers, an and sequential control module, wherein this timing control unit is exported a plurality of signals and is given those drivers to drive this array of display unit.The color management method of display apparatus comprises according to a clock pulse signal, produces a tandem color management data signal by this timing control unit.This tandem color management data signal is converted to a plurality of parallel color data simulating signals again.Those parallel color data simulating signals are inputed to those drivers, to carry out a picture element color correction again.
With regard to so-called display apparatus, the present invention provides a kind of display apparatus in addition, and it comprises an array of display unit.A plurality of drivers can drive this array of display unit with display image.Again, the exportable a plurality of signals of a sequential control module give those drivers driving this array of display unit, and export a clock pulse signal.An exportable again color management data is given those drivers.
Description of drawings
[brief description of drawingsfig]
Fig. 1 is traditional source electrode driver structure calcspar.
Fig. 2 is traditional liquid crystal indicator structure calcspar.
Fig. 3 is the liquid crystal indicator calcspar according to one embodiment of the invention.
Fig. 4 is another embodiment calcspar according to ASIC wafer among Fig. 3 of the present invention.
Fig. 5 is the liquid crystal indicator calcspar according to the embodiment of the invention.
Fig. 6～7 are the structure calcspar according to source electrode driver of the present invention.
Fig. 8～9 are the design calcspar according to timing control unit of the present invention.
Embodiment]
Please refer to Fig. 3, it shows the liquid crystal indicator calcspar according to first embodiment of the invention.Liquid crystal indicator comprises that TFT-LCD pixel array 120 is with display image.In addition, multiple source driver 204 and a plurality of gate pole drivers 202, display image to drive corresponding picture element.DC/DC converter 130 provides voltage to driver 202,204 as described above at least.
The newly-designed ASIC wafer 200 of the special proposition of the present invention.This ASIC wafer 200 can extensively be called timing control unit again.This ASIC wafer 200 except comprise traditional receiver (receiver) 200a, RSDS/TTL forwarder (RSDS/TTL transmitter) 200b, and time schedule controller (time controller) 200c, comprise a storage unit 200d again.Storage unit 200d stores the basic document of color management.In addition, there is an interface able to programme to be present between ASIC wafer 200 and the source electrode driver 204.So, ASIC wafer 200 exportable a plurality of signals give gate pole driver 202 and source electrode driver 204 to drive this array of display unit.Simultaneously, ASIC wafer 200 is also exported a clock pulse signal and a color management data and is given those source electrode drivers 204.
This color management data is adjustable or programmable data, through source electrode driver 204 receive handle after, can be corresponding to desired color management data, for example the gamma curve data shows suitable color to drive picture element.
In embodiments of the invention,, convert the color management data to through interface and use for source electrode driver 204 because the color management data is stored in storage unit 200d with digital form.The present invention can save in traditional design gamma correction unit 132 is arranged at respectively on the system line plate, can save the setting of a large amount of divider resistances at least.
Propose identical design concept according to the present invention, the design of ASIC wafer 200 also can change as shown in Figure 4.In Fig. 4, ASIC wafer 200 can provide signal (as shown by arrows) to give source electrode driver 204 and gate pole driver 202.Simultaneously, ASIC wafer 200 can comprise storage unit 200d and processing unit 200e.Processing unit 200e is according to the data of storage unit 200d, and after treatment by interface able to programme, with the color management data, for example the gamma curve data outputs to source electrode driver 204.
Can be referred to as timing control unit in above-mentioned ASIC wafer 200.The liquid-crystal apparatus system can be as shown in Figure 5.Display panel for example is the panel 250 of M * N pixel array.Be provided with multiple source driver 204 and a plurality of gate pole drivers 202 around the panel 250, to drive the chroma-luminance of corresponding picture element.Pixel array then constitutes the image that desire shows.Power supply 258 can provide the appropriate voltage value to source electrode driver 204 at least.
Again, liquid crystal indicator comprises a sequential control module 256 again.The a plurality of signals of these sequential control module 256 outputs give those gate pole drivers 202 and those source electrode drivers 204 to drive this array of display unit.Timing control unit 256 also exports a clock pulse signal and a color management data is given source electrode driver 204.This color management data comprises adjustable gamma curve magnitude of voltage, and it also can be a string column voltage numerical data.Tandem digital color data can obtain parallel simulation color data magnitude of voltage after the decoding of source electrode driver 204.These simulation color data magnitudes of voltage for example are exactly the magnitude of voltage of the VGA1～VGA14 114 among Fig. 1.
With regard to source electrode driver 204 designs, as shown in Figure 6, for example interface 300 able to programme and traditional source electrode driver 122 can be integrated into source electrode driver 204 of the present invention or also can be arranged between timing control unit 256 and the source electrode driver 122 according to actual design.
In embodiment shown in Figure 6, interface 300 able to programme comprises that an input interface 302 is to receive data able to programme and by timing control unit 256 outputs with reference to clock pulse Clock.Input interface 302 outputs to a demoder 304 after data able to programme is translated into desired data formats earlier.Demoder 304 also receives simultaneously with reference to clock pulse Clock, and decodes to produce numerical data and control signal.One digital to analogy conversion (digital to analog converter, DAC) unit 306, reception data, control signal and with reference to clock pulse Clock, to convert parallel a plurality of color management data, for example Vgamma 1, Vgamma 2 to ..., Vgamma n.These color management data, now for example is input to traditional source electrode driver 122.
Design arrangement for interface 300 able to programme can have multiple variation according to actual design.Fig. 7 illustrates a kind of design calcspar of interface 300 able to programme.To parallel input interface 302, convert the data able to programme of tandem to parallel data by tandem.Demoder 304 is decoded parallel data, and now utilizes shift registor and bolt lock device and a plurality of DAC, to obtain color management data simulating signal, and for example Vgamma 1, Vgamma 2 ..., Vgamma n etc. voltage signal.
Therefore, source electrode driver of the present invention can comprise the one source pole driving circuit, to drive this array of display unit, and a data interface able to programme, receive this color management data and this clock signal, and a plurality of color electric potential signals of parallel output use for this source electrode drive circuit.
As for timing control unit 256 of the present invention, for example can be integrated in the ASIC wafer.Timing control unit 256 can comprise a traditional time controller 256a and a control block 256b as shown in Figure 8.Control block 256b and time controller 256a couple, and produce programmable color data, for example gamma value.Now, control block 256b are exported data able to programme and with reference to clock pulse.This data able to programme and with reference to clock pulse is output to each source electrode driver 204.
Above-mentioned control block 256b as shown in Figure 9, can be made of processing unit 402 and storage unit 400 again.Storage unit 400 stores the reference or the basic document of color management.Processing unit 402 is according to the color management reference or the basic document of storage unit 400, exports data able to programme after treatment and with reference to clock pulse clock.
About the color management interface system that the present invention proposes, though separated into two parts, be placed in timing control unit and source electrode driver are not subject to arrangement setting like this.This color management interface system also can be coupled to other positions between this timing control unit and those source electrode drivers, gives those source electrode drivers to produce a color management data.
Again, the present invention also proposes the color management method of display apparatus, is applicable to a display apparatus.Wherein display apparatus comprises an array of display unit, a plurality of drivers, and a sequential control module.Timing control unit is exported a plurality of signals and is given those drivers to drive this array of display unit.Color management method of the present invention can comprise according to a clock pulse signal, produces a tandem color management data signal by this timing control unit.This tandem color management data signal is converted to a plurality of parallel color data simulating signals again.Those parallel color data simulating signals are inputed to those drivers, to carry out a picture element color correction again.
According to liquid crystal indicator of the present invention, it does not need as the gamma correction unit that is provided with respectively traditionally to provide the color management data to source electrode driver.Wafer by timing control unit also provides a color management data to source electrode driver simultaneously.This color management data is used after money is by source electrode driver decoding and conversion.So, can save in a large number in traditional gamma correction unit, be used for the resistance of dividing potential drop.The also therefore dimension and weight of economy system in a large number, and then can reduce the problem of conventional art.
Color management method of the present invention is except applicable to the TFT-LCD display device, also applicable to the color management and the correction of other display apparatus.
Though the present invention discloses as above with a preferred embodiment; right its is not in order to limiting the present invention, anyly has the knack of this technician, without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is as the criterion when the claim that look application defines.
Claims (21)
1. the color management structure of a display apparatus comprises:
One array of display unit;
A plurality of gate pole drivers;
The multiple source driver, wherein those gate pole drivers and those source electrode drivers drive this array of display unit with display image; And
One sequential control module, wherein this timing control unit is exported a plurality of signals and is given those gate pole drivers and those source electrode drivers driving this array of display unit, and this timing control unit is also exported a clock pulse signal and a color management data to those source electrode drivers.
2. the color management structure of display apparatus as claimed in claim 1 is characterized in that, wherein the content of this color management data is adjustable.
3. the color management structure of display apparatus as claimed in claim 1 is characterized in that, wherein display apparatus is a liquid crystal indicator.
4. the color management structure of display apparatus as claimed in claim 1 is characterized in that, wherein this timing control unit comprises:
One time controller receives system input, and this clock signal is provided; And
One color management control zone piece couples with this time controller, and exports this color management data and this clock signal and give those source electrode drivers, and wherein this color management data is programmable.
5. the color management structure of display apparatus as claimed in claim 4 is characterized in that, wherein this color management control block comprises:
One storage element stores a color management basic document; And
One processing unit, the output that receives this color management basic document and this time controller to be handling, and export this color management data and this clock signal.
6. the color management structure of display apparatus as claimed in claim 1 is characterized in that, wherein each those source electrode driver comprises:
The one source pole driving circuit is to drive this array of display unit; And
One data interface able to programme receives this color management data and this clock signal, and a plurality of color electric potential signals of parallel output use for this source electrode drive circuit.
7. the color management structure of display apparatus as claimed in claim 6 is characterized in that, wherein those color electric potential signals comprise a plurality of color gamma current potential data.
8. the color management structure of display apparatus as claimed in claim 6 is characterized in that, wherein this data interface able to programme comprises:
One input interface receives this color management data and this clock signal, and with a data formats this color management data is translated;
One demoder receives this color management data after translating and this clock signal decoding, and exports a decoding back data and a control signal; And
One digital to analogy converting unit receives this decoding back data, this control signal and this clock signal, with a plurality of color electric potential signals of parallel output.
9. the color management structure of display apparatus as claimed in claim 8 is characterized in that, wherein this input interface converts a tandem input signal to a plurality of parallel output signals according to this clock signal.
10. the color management structure of display apparatus as claimed in claim 8 is characterized in that, wherein this digital to analogy converting unit comprises:
One shift registor receives the output of this demoder;
One bolt lock device is accepted the output of this shift registor, and receives the output of this demoder; And
A plurality of digital-to-analog converters are coupled to this bolt lock device, corresponding those color electric potential signals of output out of the ordinary.
11. the color management structure of display apparatus as claimed in claim 1 is characterized in that, wherein this timing control unit be integrated in an ASIC wafer (Application SpecificationIC, ASIC) in.
12. a source electrode driver is used for a panel and shows device to drive an array of display unit, this source electrode driver comprises:
The one source pole driving circuit is to drive this array of display unit; And
One data interface able to programme receives a color management data and a clock pulse signal, and a plurality of color electric potential signals of parallel output use for this source electrode drive circuit.
13. source electrode driver as claimed in claim 12 is characterized in that, wherein those color electric potential signals comprise a plurality of color gamma current potential data.
14. source electrode driver as claimed in claim 12 is characterized in that, wherein this data interface able to programme comprises:
One input interface receives this color management data and this clock signal, and with a data formats this color management data is translated;
One demoder receives this color management data after translating and this clock signal decoding, and exports a decoding back data and a control signal; And
One digital to analogy converting unit receives this decoding back data, this control signal and this clock signal, with a plurality of color electric potential signals of parallel output.
15. source electrode driver as claimed in claim 14 is characterized in that, wherein this input interface converts a tandem input signal to a plurality of parallel output signals according to this clock signal.
16. source electrode driver as claimed in claim 14 is characterized in that, wherein this digital to analogy converting unit comprises:
One shift registor receives the output of this demoder;
One bolt lock device is accepted the output of this shift registor, and receives the output of this demoder; And
A plurality of digital-to-analog converters are coupled to this bolt lock device, corresponding those color electric potential signals of output out of the ordinary.
17. the color management structure of a display apparatus comprises:
One array of display unit;
A plurality of gate pole drivers;
The multiple source driver, wherein those gate pole drivers and those source electrode drivers drive this array of display unit with display image;
One sequential control module, wherein this timing control unit is exported a plurality of signals and is given those gate pole drivers and those source electrode drivers driving this array of display unit, and exports a clock pulse signal; And
One color management interface system is coupled between this timing control unit and those source electrode drivers, gives those source electrode drivers to produce a color management data.
18. the color management structure of display apparatus as claimed in claim 17, it is characterized in that, this color management interface system wherein, comprise a color management control zone piece, be arranged in this timing control unit, and a color data converting unit, be arranged at each those source electrode driver, give those source electrode drivers to obtain a plurality of color electric potential signals.
19. a display apparatus comprises:
One array of display unit;
A plurality of drivers are to drive this array of display unit with display image; And
One sequential control module, wherein this timing control unit is exported a plurality of signals and is given those drivers driving this array of display unit, and exports a clock pulse signal, and the color management data of exporting is given those drivers.
20. display apparatus as claimed in claim 19 is characterized in that, wherein this color management data is a tandem color management correction data.
21. the color management method of a display apparatus, be applicable to a display apparatus, wherein this display apparatus comprises an array of display unit, a plurality of drivers, an and sequential control module, wherein this timing control unit is exported a plurality of signals and is given those drivers to drive this array of display unit, and the color management method of this display apparatus comprises:
According to a clock pulse signal, produce a tandem color management data signal by this timing control unit;
Convert this tandem color management data signal to a plurality of parallel color data simulating signals; And
Those parallel color data simulating signals are inputed to those drivers, to carry out a picture element color correction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100302830A CN100429562C (en) | 2004-03-23 | 2004-03-23 | Colour managing structure and colour managing method for panel display device, source pole driver and panel display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2004100302830A CN100429562C (en) | 2004-03-23 | 2004-03-23 | Colour managing structure and colour managing method for panel display device, source pole driver and panel display device |
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| CN1673812A true CN1673812A (en) | 2005-09-28 |
| CN100429562C CN100429562C (en) | 2008-10-29 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101499244B (en) * | 2008-01-31 | 2011-03-30 | 联咏科技股份有限公司 | Impulse driving method and circuit of LCD |
| TWI382390B (en) * | 2008-01-29 | 2013-01-11 | Novatek Microelectronics Corp | Impuls-type driving method and circuit for liquid crystal display |
| CN101730330B (en) * | 2008-10-10 | 2013-02-20 | 华映视讯（吴江）有限公司 | Drive circuit and method of backlight unit |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW376501B (en) * | 1998-01-26 | 1999-12-11 | Au Optronics Corp | Digital image driving circuit for LCD |
| JP2002116727A (en) * | 2000-10-05 | 2002-04-19 | Ricoh Co Ltd | Gamma correction device and liquid crystal display device or liquid crystal projector |
| KR100853210B1 (en) * | 2002-03-21 | 2008-08-20 | 삼성전자주식회사 | A liquid crystal display apparatus having functions of color characteristic compensation and response speed compensation |
| JP4409152B2 (en) * | 2002-06-27 | 2010-02-03 | 株式会社ルネサステクノロジ | Display control drive device and display system |
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2004
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI382390B (en) * | 2008-01-29 | 2013-01-11 | Novatek Microelectronics Corp | Impuls-type driving method and circuit for liquid crystal display |
| CN101499244B (en) * | 2008-01-31 | 2011-03-30 | 联咏科技股份有限公司 | Impulse driving method and circuit of LCD |
| CN101730330B (en) * | 2008-10-10 | 2013-02-20 | 华映视讯（吴江）有限公司 | Drive circuit and method of backlight unit |
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| CN100429562C (en) | 2008-10-29 |
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