CN101114429B - Planar display and image driving method thereof - Google Patents
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- CN101114429B CN101114429B CN200610108619XA CN200610108619A CN101114429B CN 101114429 B CN101114429 B CN 101114429B CN 200610108619X A CN200610108619X A CN 200610108619XA CN 200610108619 A CN200610108619 A CN 200610108619A CN 101114429 B CN101114429 B CN 101114429B
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Abstract
The invention discloses a flat panel display as well as an image driving method, comprising at least a display panel, a signal divider, a plurality of sequence controllers, a plurality of first data driving units, a plurality of second data driving units, as well as at least a scanning driving unit. The signal divider divides an input image signal into a plurality of partial image signals, and then according to the positions of different images, the partial image signals are sent to corresponding sequence controllers. The first data driving units and the second data driving units, which are arranged on the two sides of the panel, receive the partial image signals sent by corresponding sequence controllers to transmit the input image signals to the display pixels of the display panel. The scanning driving unit receives the control signals of the sequence controllers, and controls the display pixels on the display panel based on the control signals. The complexity and frequency width of signal transmission is reduced in accordance with the operating frequency width of the data driving units, and at the same time, the problem that a large-sized liquid crystal panel takes too much time to transmit signals is solved.
Description
Technical field
The invention relates to a kind of flat-panel screens, and particularly relevant for a kind of flat-panel screens and image driving method thereof that can be applicable to large scale and high-res.
Background technology
Along with of the progress of optics science and technology with semiconductor technology; There is many flat-panel screens (Flat PanelDisplay) technology to be developed in succession; Wherein, LCD (LCD) because have that high image quality, volume are little, in light weight, low voltage drive, low power consumption and advantages of wide application range; Therefore be widely used in medium and small Portable TV, mobile phone, shoot with video-corder consumer electronics or computer products such as projector, notebook computer, desktop display and projection TV, and replace cathode-ray tube (CRT) (Cathode Ray Tube gradually; CRT), become the main flow of following display, wherein thin film transistor (TFT) (Thin Film Transistor particularly; TFT) LCD, the characteristic because of its high display quality and low consumpting power has almost occupied most market.In addition, flourish along with the high definition digital DTV in recent years, the thin film transistor (TFT) transistor liquid crystal display (TFT-LCD) has become the best image technology of hd-tv more.
In LCD; Gate drive circuit (Gate Driver) is the transistorized signal that opens or closes of transistor that is used for transmitting on the display; Therefore be also referred to as scan drive circuit (Scan Driver); And source electrode drive circuit (Source Driver) is to be analog voltage with digital signal transition, to be used for transmitting signal of video signal to display, so also be called digital data driving circuit (Data Driver).Scan drive circuit is responsible for controlling periodically with a unbalanced pulse switch of switching transistor (Switching Transistor); When switching transistor was opened, the digital data driving circuit can write liquid crystal cells with pixel data (Pixel Data) through switching transistor.In addition; LCD also comprises time schedule controller (TimingController); Its major function is producing gate drive circuit and the required control signal of source electrode drive circuit, via gate drive circuit and source electrode drive circuit, the electronic signal of image is sent in the display.
Please refer to Fig. 1, shown in Figure 1 is the synoptic diagram of existing flat-panel screens, and existing flat-panel screens comprises display panel 102, time schedule controller 104, digital data driving circuit 106 at least and scans driving circuit 108.Time schedule controller 104 can will be imported signal of video signal and deliver in the digital data driving circuit 106; And export one and control signal to and scan driving circuit 108; So that scan the switch that driving circuit 108 can be controlled switching transistor, digital data driving circuit 106 is sent to the electronic signal of image in the display.Yet the liquid crystal panel size that is applied to the high definition digital TV constantly increases, and resolution also upwards improves again and again, and size increases, and causes the load of panel signal wire to increase; Resolution improves, and makes the duration of charging of each row of liquid crystal panel become shorter.Existing flat-panel screens type of drive can't write liquid crystal panel with correct voltage in the limited time.
Summary of the invention
Therefore, the object of the invention is to provide a kind of flat-panel screens and image driving method thereof exactly, can reduce complexity and frequency range that signal transmits, to meet the operation frequency range of data-driven unit.
Another object of the present invention is to provide a kind of flat-panel screens and image driving method thereof exactly, can improve the long problem of large scale liquid crystal panel signal transmission time.
Another purpose of the present invention is to provide a kind of flat-panel screens and image driving method thereof exactly; Use signal splitter; Be cut into several partial image signals will import signal of video signal,, respectively the partial image signal be sent to corresponding time schedule controller again according to the different images position.
A purpose more of the present invention is a kind of flat-panel screens and image driving method thereof are provided exactly, and the mode of utilizing the both-end digital data to drive can write liquid crystal panel with correct voltage in the limited time.
Of the present invention again again a purpose be to provide a kind of flat-panel screens and image driving method thereof exactly; Time schedule controller is between the first data-driven unit and the second data-driven unit; And the distance of time schedule controller to the first data-driven unit equates apart from essence with time schedule controller to the second data-driven unit, and it is identical with the time of the second data-driven unit to make signal be sent to the first data-driven unit.
According to above-mentioned purpose of the present invention, a kind of flat-panel screens is proposed, comprise a display panel, a signal splitter, several time schedule controllers, several first data-driven unit, several second data-driven unit and at least one scan drive cell at least.Display panel has several display pixels.Signal splitter is in order to be cut into several partial image signals with an input signal of video signal.Time schedule controller can receive corresponding partial image signal respectively according to the different images position, and wherein, the partial image signal corresponds to time schedule controller respectively, and at least one exportable control signal of time schedule controller.The first data-driven unit is arranged at one side of display panel, and the second data-driven unit is arranged at the another side of display panel.The first data-driven unit and the second data-driven unit receive the partial image signal that corresponding time schedule controller transmits, will import the display pixel that signal of video signal is sent to display panel.Scan drive cell receives above-mentioned control signal, and according to this control signal with the display pixel on the control display panel.
According to preferred embodiment of the present invention; Time schedule controller is between the first data-driven unit and the second data-driven unit, and the equating apart from essence of the distance of time schedule controller to the first data-driven unit and time schedule controller to the second data-driven unit.Signal splitter also comprises a counter and a selector switch at least, and counter can be in order to cutting input signal of video signal, and selector switch can be sent to corresponding time schedule controller with the each several part signal of video signal.Signal splitter comprises a line style impact damper (Line Buffer) more at least, with the synchronous driving of each several part signal of video signal to corresponding time schedule controller.
According to another object of the present invention, a kind of image driving method is proposed, comprise the following steps: at least at first, an input signal of video signal is provided, again this input signal of video signal is cut into several partial image signals.Then, according to the different images position, the each several part signal of video signal is delivered to corresponding several time schedule controllers, wherein, the each several part signal of video signal corresponds to each time schedule controller respectively.Next; The partial image signal that each time schedule controller received is delivered to corresponding several first data-driven unit and several second data-driven unit; Will import on several display pixels that signal of video signal is sent to a display panel; Wherein, the first data-driven unit and the second data-driven unit are the both sides settings with respect to display panel.
According to preferred embodiment of the present invention, wherein with this input signal of video signal step of cutting, be to utilize a counter that this input signal of video signal is counted, be divided into above-mentioned partial image signal will import signal of video signal.In addition, the step system that above-mentioned partial image signal is delivered to corresponding time schedule controller utilizes a selector switch.
Description of drawings
For letting above-mentioned and other purposes of the present invention, characteristic and the advantage can be more obviously understandable, below specially lift a preferred embodiment, and cooperate appended graphicly, elaborate as follows:
Shown in Figure 1 is the synoptic diagram of existing flat-panel screens.
Shown in Figure 2 is the synoptic diagram of accordinging to the flat-panel screens of preferred embodiment of the present invention.
Shown in Figure 3 is the synoptic diagram of accordinging to the flat-panel screens of another preferred embodiment of the present invention.
Main element symbol description among the figure:
20: flat-panel screens 30: flat-panel screens
102: display panel 104: time schedule controller
106: data drive circuit 108: scan driving circuit
202: display panel 204: time schedule controller
206: time schedule controller 208: time schedule controller
210: 212: the first data-driven unit of time schedule controller
216: the first data-driven unit, 214: the first data-driven unit
220: the second data-driven unit, 218: the first data-driven unit
224: the second data-driven unit, 222: the second data-driven unit
226: the second data-driven unit 228a: scan drive cell
228b: scan drive cell 230: signal splitter
302: display panel 304: time schedule controller
306: time schedule controller 308: time schedule controller
310: 312: the first data-driven unit of time schedule controller
316: the first data-driven unit, 314: the first data-driven unit
320: the second data-driven unit, 318: the first data-driven unit
324: the second data-driven unit, 322: the second data-driven unit
326: the second data-driven unit 328a: scan drive cell
328b: scan drive cell 330: signal splitter
Embodiment
In order to make narration of the present invention more detailed and complete, can be with reference to the diagram of following description and cooperation Fig. 2 and Fig. 3.
Please refer to Fig. 2, shown in Figure 2 is the synoptic diagram of accordinging to the flat-panel screens of preferred embodiment of the present invention.The flat-panel screens 20 of preferred embodiment of the present invention comprises display panel 202 at least; Several time schedule controllers (time schedule controller 204; Time schedule controller 206; Time schedule controller 208 and time schedule controller 210); Several (first data-driven unit 212, first data-driven unit; The first data-driven unit 214; The first data-driven unit 216 and the first data-driven unit 218); Several (second data-driven unit 220, second data-driven unit; The second data-driven unit 222; The second data-driven unit 224 and the second data-driven unit 226); Scan drive cell (scan drive cell 228a and scan drive cell 228b) and signal splitter 230.Wherein, display panel 202 has several display pixels.
Because the liquid crystal panel size increases; Cause the load of panel data signal line to increase; So the flat-panel screens of preferred embodiment of the present invention increases by one group of data-driven unit again at the offside of display panel; Utilize the first data-driven unit and the second data-driven unit of liquid crystal panel both sides to come drive signal line, to reach in the limited time purpose that correct voltage is write panel.In addition; The flat-panel screens of preferred embodiment of the present invention is also utilized signal splitter; To import signal of video signal and be cut into several partial image signals,, respectively the partial image signal will be sent to corresponding time schedule controller again according to the different images position; To reduce complexity and the frequency range that signal transmits, meet the operation frequency range of data-driven unit.
For example in preferred embodiment of the present invention, signal splitter 230 will be imported signal of video signal and be cut into four partial image signals, synchronously, be sent in time schedule controller 204, time schedule controller 206, time schedule controller 208 and the time schedule controller 210 respectively.Then; Time schedule controller 204, time schedule controller 206, time schedule controller 208 and time schedule controller 210 are sent to the partial image signal in the first data-driven unit and the second data-driven unit with its electric connection, will import the display pixel that signal of video signal is sent to display panel 202 respectively again.In addition; Time schedule controller 204 outputs control signals to more respectively among scan drive cell 228a and the scan drive cell 228b with time schedule controller 210; Make scan drive cell 228a and scan drive cell 228b open each the row display pixel on the display panel 202 in regular turn, make the first data-driven unit and the second data-driven unit will import signal of video signal and send into display panel 202.
Therefore; A characteristic of the present invention is exactly; The flat-panel screens of preferred embodiment of the present invention utilizes time schedule controller to provide the first data-driven unit and the second data-driven unit required signal simultaneously; By the mode of both-end data-driven, in the limited time, correct voltage is write liquid crystal panel.
Another feature of the present invention is exactly; The flat-panel screens of preferred embodiment of the present invention is utilized signal splitter; To import signal of video signal and be cut into several partial image signals,, respectively the partial image signal will be sent to corresponding time schedule controller again according to the different images position; To reduce complexity and the frequency range that signal transmits, meet the operation frequency range of data-driven unit.
In preferred embodiment of the present invention, each data-driven unit comprises two data drivers.Signal splitter can make use programmed lock array (Field-programmable Gate Array; FPGA) or special applications chip IC (ASIC, Application Specific Integrated Chip; ASIC) realize.Signal splitter 230 can have a counter and a selector switch, after counter will be imported signal of video signal and be divided into several partial image signals, utilizes selector switch that the each several part signal of video signal is sent to corresponding time schedule controller again.For example in preferred embodiment of the present invention, counter is counted horizontal input signal of video signal (signal 0 to signal 3839), and when counting up to signal 959, this moment, signal 0 to signal 959 was the first part signal of video signal.Counter is proceeded counting again, and this signal 960 to signal 1919 is the second part signal of video signal.Mode according to this produces the 3rd partly signal of video signal and the 4th partial image signal, and utilizes a line style impact damper (Line Buffer), with each several part signal of video signal synchronous driving corresponding time schedule controller extremely.The employed signal segmentation method of preferred embodiment of the present invention is merely an example of the present invention, can not limit scope of the present invention, in other embodiments of the invention, also can use additive method to carry out the cutting of signal.
Then, please refer to Fig. 3, shown in Figure 3 is the synoptic diagram of accordinging to the flat-panel screens of another preferred embodiment of the present invention.The flat-panel screens 30 of this preferred embodiment comprises display panel 302 at least; Several time schedule controllers (time schedule controller 304; Time schedule controller 306; Time schedule controller 308 and time schedule controller 310); Several (first data-driven unit 312, first data-driven unit; The first data-driven unit 314; The first data-driven unit 316 and the first data-driven unit 318); Several (second data-driven unit 320, second data-driven unit; The second data-driven unit 322; The second data-driven unit 324 and the second data-driven unit 326); Scan drive cell (scan drive cell 328a and scan drive cell 328b and signal splitter 330.Wherein, display panel 302 has several display pixels.
The places different with Fig. 2 are; The time schedule controller of the flat-panel screens of Fig. 3 system is between the first data-driven unit and the second data-driven unit, and the equating apart from essence of the distance of time schedule controller to the first data-driven unit and time schedule controller to the second data-driven unit.The benefit of this kind configuration mode is; Time schedule controller to the first data-driven unit equates with the line length essence of the second data-driven unit; Therefore, the time schedule controller first data-driven unit that is sent to the liquid crystal panel both sides also can be identical with the signal delay of the second data-driven unit.
Therefore; Another characteristic of the present invention is exactly; The time schedule controller of the flat-panel screens of preferred embodiment of the present invention can be between the first data-driven unit and the second data-driven unit; And the distance of time schedule controller to the first data-driven unit equates apart from essence with time schedule controller to the second data-driven unit, and it is identical with the time of the second data-driven unit to make signal be sent to the first data-driven unit.
Can know by the invention described above preferred embodiment; An advantage of the present invention is exactly; Flat-panel screens of the present invention is utilized the mode of both-end data-driven, can in the limited time, correct voltage be write liquid crystal panel, can improve the long problem of large scale liquid crystal panel signal transmission time.
Can know by the invention described above preferred embodiment; Another advantage of the present invention is exactly that flat-panel screens of the present invention is used signal splitter, is cut into several partial image signals will import signal of video signal; Again according to the different images position; Respectively the partial image signal is sent to corresponding time schedule controller,, meets the operation frequency range of data-driven unit to reduce complexity and the frequency range that signal transmits.
Can know by the invention described above preferred embodiment; Another advantage of the present invention is exactly; The time schedule controller of flat-panel screens of the present invention is between the first data-driven unit and the second data-driven unit; And the distance of time schedule controller to the first data-driven unit equates apart from essence with time schedule controller to the second data-driven unit, and it is identical with the time of the second data-driven unit to make signal be sent to the first data-driven unit.
Though the present invention discloses as above with a preferred embodiment; Right its is not in order to limit the present invention; Any those skilled in the art; Do not breaking away from the spirit and scope of the present invention, when can doing various changes and retouching, so protection scope of the present invention is as the criterion with what claims scope defined.
Claims (22)
1. flat-panel screens comprises at least:
One display panel has several display pixels;
One signal splitter is in order to be cut into several partial image signals with an input signal of video signal;
Several time schedule controllers can receive corresponding each several part signal of video signal respectively according to the different images position, and wherein, the each several part signal of video signal corresponds to each time schedule controller respectively, and one of them exportable control signal at least of these time schedule controllers;
Several first data-driven unit are arranged at one side of this display panel;
Several second data-driven unit; Be arranged at the another side of this display panel; Each first data-driven unit and each second data-driven unit receive the partial image signal that corresponding each time schedule controller transmitted, will import each display pixel that signal of video signal is sent to this display panel; And
At least one scan drive cell receives this control signal, and according to this control signal to control each display pixel on this display panel.
2. flat-panel screens as claimed in claim 1 is characterized in that this signal splitter comprises a counter at least, can should import signal of video signal in order to cutting.
3. flat-panel screens as claimed in claim 1 is characterized in that this signal splitter comprises a selector switch at least, can the each several part signal of video signal be sent to corresponding time schedule controller.
4. flat-panel screens as claimed in claim 1 is characterized in that, this signal splitter comprises a line style impact damper at least, with the synchronous driving of each several part signal of video signal to corresponding time schedule controller.
5. flat-panel screens as claimed in claim 1 is characterized in that, this signal splitter is an at least one programmed lock array or a special applications chip IC.
6. flat-panel screens as claimed in claim 1 is characterized in that, this flat-panel screens is a LCD.
7. a flat-panel screens is characterized in that, comprises at least:
One display panel has several display pixels;
One signal splitter is in order to be cut into several partial image signals with an input signal of video signal;
Several time schedule controllers can receive corresponding each several part signal of video signal respectively according to the different images position, and wherein, the each several part signal of video signal corresponds to each time schedule controller respectively, and an exportable control signal one of at least in these time schedule controllers;
Several first data-driven unit are arranged at one side of this display panel;
Several second data-driven unit; Be arranged at the another side of this display panel; Each first data-driven unit and each second data-driven unit receive the partial image signal that corresponding each time schedule controller transmitted, will import each display pixel that signal of video signal is sent to this display panel; And
At least one scan drive cell receives this control signal, and according to this control signal to control each display pixel on this display panel;
Wherein, Each time schedule controller is between each first data-driven unit and each second data-driven unit, and each time schedule controller to the distance of its corresponding first data-driven unit and this time schedule controller to the equating of its corresponding second data-driven unit apart from essence.
8. flat-panel screens as claimed in claim 7 is characterized in that this signal splitter comprises a counter at least, can should import signal of video signal in order to cutting.
9. flat-panel screens as claimed in claim 7 is characterized in that this signal splitter comprises a selector switch at least, can the each several part signal of video signal be sent to corresponding each time schedule controller.
10. flat-panel screens as claimed in claim 7 is characterized in that, this signal splitter comprises a line style impact damper at least, with the synchronous driving of each several part signal of video signal to corresponding each time schedule controller.
11. flat-panel screens as claimed in claim 7 is characterized in that, this signal splitter is an at least one programmed lock array or a special applications chip IC.
12. flat-panel screens as claimed in claim 7 is characterized in that, this flat-panel screens is a LCD.
13. an image driving method is characterized in that, comprises at least:
One input signal of video signal is provided;
Should import signal of video signal and be cut into several partial image signals;
According to the different images position, the each several part signal of video signal is delivered to corresponding several time schedule controllers, wherein, the each several part signal of video signal corresponds to each time schedule controller respectively; And
The each several part signal of video signal that each time schedule controller received is delivered to corresponding several first data-driven unit and several second data-driven unit; Will import on several display pixels that signal of video signal is sent to a display panel; Wherein, each first data-driven unit and each second data-driven unit are the both sides settings with respect to this display panel.
14. image driving method as claimed in claim 13 is characterized in that, this should import the signal of video signal step of cutting, was to utilize a counter that this input signal of video signal is counted, and was divided into the each several part signal of video signal should import signal of video signal.
15. image driving method as claimed in claim 13 is characterized in that, this step that each several part signal of video signal is delivered to corresponding each time schedule controller is to utilize a selector switch.
16. an image drive unit is characterized in that, comprises at least:
One signal splitter is in order to be cut into several partial image signals with an input signal of video signal;
Several time schedule controllers can receive corresponding each several part signal of video signal respectively according to the different images position, and wherein, the each several part signal of video signal corresponds to each time schedule controller respectively;
Several first data-driven unit; And several second data-driven unit;
Each first data-driven unit and each second data-driven unit receive the each several part signal of video signal that corresponding each time schedule controller transmitted; Be sent on the display panel should import signal of video signal; Wherein, each first data-driven unit and each second data-driven unit are provided with respect to the both sides of this display panel.
17. image drive unit as claimed in claim 16; It is characterized in that; Each time schedule controller is between each first data-driven unit and each second data-driven unit, and the distance of this time schedule controller to its pairing first data-driven unit and this time schedule controller equating apart from essence to its pairing second data-driven unit.
18. image drive unit as claimed in claim 16 is characterized in that this signal splitter comprises a counter at least, can should import signal of video signal in order to cutting.
19. image drive unit as claimed in claim 16 is characterized in that this signal splitter comprises a selector switch at least, can the each several part signal of video signal be sent to corresponding each time schedule controller.
20. image drive unit as claimed in claim 16 is characterized in that, this signal splitter comprises a line style impact damper at least, with the synchronous driving of each several part signal of video signal to corresponding each time schedule controller.
21. image drive unit as claimed in claim 16 is characterized in that, this signal splitter is an at least one programmed lock array or a special applications chip IC.
22. image drive unit as claimed in claim 16 is characterized in that, this flat-panel screens is a LCD.
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| CN200610108619XA CN101114429B (en) | 2006-07-28 | 2006-07-28 | Planar display and image driving method thereof |
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| TWI434258B (en) * | 2011-12-09 | 2014-04-11 | Au Optronics Corp | Data driving apparatus, corresponding operation method and corresponding display |
| TWI444962B (en) * | 2011-12-15 | 2014-07-11 | Au Optronics Corp | Display apparatus having optical compensating function and compensating method therof |
| TWI462076B (en) * | 2012-03-09 | 2014-11-21 | Au Optronics Corp | Display apparatus |
| CN102968974A (en) * | 2012-12-10 | 2013-03-13 | 深圳市华星光电技术有限公司 | Liquid crystal display and display driving method thereof |
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| CN1707595A (en) * | 2004-06-04 | 2005-12-14 | 联咏科技股份有限公司 | Source electrode driver, source electrode array, driving circuit and display with the same array |
| CN1728204A (en) * | 2004-07-30 | 2006-02-01 | 冲电气工业株式会社 | Scanning method of display panel and a display unit |
| CN1744773A (en) * | 2004-08-30 | 2006-03-08 | 三星Sdi株式会社 | Organic light emitting display and method of driving the same |
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| CN1707595A (en) * | 2004-06-04 | 2005-12-14 | 联咏科技股份有限公司 | Source electrode driver, source electrode array, driving circuit and display with the same array |
| CN1728204A (en) * | 2004-07-30 | 2006-02-01 | 冲电气工业株式会社 | Scanning method of display panel and a display unit |
| CN1744773A (en) * | 2004-08-30 | 2006-03-08 | 三星Sdi株式会社 | Organic light emitting display and method of driving the same |
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Address after: Science Road, 350, Hsinchu Science Industrial Park, Miaoli, Taiwan, China, No. 160, science Road Applicant after: Chimei Optoelectronics Co., Ltd. Address before: China Taiwan 74144 Tainan County Tainan Science Industrial Park odd Road No. 1 Applicant before: Chimei Optoelectronics Co., Ltd. |
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