CN102622953A - Driving device of display - Google Patents
Driving device of display Download PDFInfo
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- CN102622953A CN102622953A CN2011100758010A CN201110075801A CN102622953A CN 102622953 A CN102622953 A CN 102622953A CN 2011100758010 A CN2011100758010 A CN 2011100758010A CN 201110075801 A CN201110075801 A CN 201110075801A CN 102622953 A CN102622953 A CN 102622953A
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- 230000002123 temporal effect Effects 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
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Abstract
A driving apparatus of a display includes a controller and a plurality of driving units. The controller transmits and receives data signals according to the transmission interface. The driving units are used for driving a plurality of display lines of the display. The driving units are sequentially coupled in series, and the first-stage driving unit is directly connected with the transmission interface of the controller. Each driving unit detects the state information of each display line correspondingly driven, and each driving unit transmits each state information to the controller through the transmission interface by performing a return action when receiving and judging that the data signal is a return command. The driving device of the display provided by the invention effectively simplifies the wiring complexity between the controller and the driving unit and reduces the cost of the circuit.
Description
Technical field
The present invention relates to a kind of drive unit of display, particularly a kind of drive unit that returns its status information display.
Background technology
In today of electronic product universalness, display is a configuration on the very common electronic product.And in order to promote the demonstration usefulness of the display on the electronic product, on the drive unit of display, regular meeting is provided with and is used for detecting the open circuit of the display unit that is driven or opens circuit and status information such as operating temperature.And will detect status information return to the controller in the drive unit of display, make controller can adjust the drive signal that each driver element provided of drive unit, advance with the adjustment driver usefulness.
With the light emitting diode indicator is example, since the relation of display sizes, the driver element that has quite a lot of quantity on the display usually.In other words, if will make controller can receive all status informations that driver element detected the time, need very complicated distribution usually.On the other hand; In these driver elements last what usually and controller have certain distance; Therefore; Controller then possibly need very long transfer wire to be configured between the driver element and controller of afterbody during for the status information that will obtain last what driver element and detected.Such practice, except the transmission quality of status information was not good, the very big wiring area that also can account for because of long transfer wire had improved the cost of product.
Summary of the invention
The present invention provides a kind of drive unit of display, in order to the status information that order is come data signal or oppositely received each driver element that couples according to wherein a plurality of driver elements.
The present invention proposes a kind of drive unit of display, comprises controller and a plurality of driver element.Controller passes according to transmission interface and receives data-signal.A plurality of driver elements are in order to a plurality of display lines of driving display.Driver element is coupled in series in regular turn, and the driver element of the first order directly connects the transmission interface of controller.The status information of each display line that each driver element and detecting correspondence drive, each driver element receive and judge when this data-signal is ordered for passback, transmit each status information to controller through transmission interface to return action.
In one embodiment of this invention; When each above-mentioned driver element carries out this passback action; Driver element through being coupled between each driver element and controller transmits each status information to controller; When driver element directly connected controller, the direct transferring status data of driver element was to controller.
In another embodiment of the present invention, the driver element of the above-mentioned first order directly receives this control command by controller, and other driver element receives control command through the driver element that is coupled between each driver element and controller.
Based on above-mentioned; The present invention proposes the driver element of multi-stage serial connection, and the status information through the display line that detecting drove that driver element at different levels had, and the driver element through serial connection is with the status information of each display line; Path along controller transmits video data is back to controller.Thus, need be between driver element and controller for transferring status data, and need to increase many transmission paths, effectively simplify the complexity that connects up between controller and driver element, and reduce the cost of circuit.
For letting the above-mentioned feature and advantage of the present invention can be more obviously understandable, hereinafter is special lifts embodiment, and conjunction with figs. elaborates as follows.
Description of drawings
Fig. 1 shows the synoptic diagram of drive unit 100 of the display of one embodiment of the invention;
Fig. 2 A shows an embodiment of the driver element of the embodiment of the invention;
Fig. 2 B shows another embodiment of the driver element 200 of the embodiment of the invention;
Fig. 3 shows the synoptic diagram of drive unit 300 of the display of another embodiment of the present invention.
Reference numeral:
100,300: drive unit
110: controller
121～12N, 200,321～32N: driver element
150: display screen
151～15N: display line
210: shift register
220: the status information register
230: the mode switch circuit
240: the video data register
250: the state detecting device
260: driving signal generator
CK: frequency signal
TBUF1, TBUF2: three-state buffer
SINF, STI: status information
DDATA, DDATA1: video data
IO1～IO6: end points
SHTO: output
DRV: drive electric signal
FWD, REV: direction signal
BP1～BPN: by-pass unit
T1～TN: test signal
Embodiment
Please with reference to Fig. 1, Fig. 1 shows the synoptic diagram of drive unit 100 of the display of one embodiment of the invention.Drive unit 100 comprises controller 110 and a plurality of driver element 121～12N, and wherein N is the positive integer greater than 1.Controller 110 carries out the biography of data-signal and receives through a transmission interface and between driver element 121～12N.Data-signal comprises video data DDATA that is sent to driver element 121～12N and the status information SINF that is returned by driver element 121～12N.
In addition, driver element 122～12N then drives display line 152～15N in regular turn.Each driver element 122～12N equally also carries out the detecting of status information to display line 152～15N that it drove.The status information that driver element 122～12N is obtained then can be through each driver element 122～12N connecting interface return action toward the direction of controller 110, the status information that all driver element 121～12N are obtained can be back to controller 110 through the transmission interface that controller 110 connects driver elements 121.
More specifically explain; With driver element 12N is example; When driver element 12N carries out above-mentioned passback action, the status information of then its institute being detected acquisition through be coupled in driver element 12N and driver element 12 (N-1)～121, transferring status data to controller 110 in regular turn.Certainly, meanwhile, status information to the controller 110 that transmits its acquisition of detecting in regular turn that driver element 12 (N-1)～121 also can be synchronous.
In addition, controller 110 transmission interface that also can pass through to be connected with each display line 151～15N the video data DDATA that will show be sent to each driver element 121～12N.At this, it is to transmit to putting in order of display line 151～15N that video data DDATA transmits.Give an example and explain, the video data DDATA that will drive display line 15N that driver element 12N is received is transmitted at first, and the video data DDATA that will drive display line 151 that opposite driver element 121 is received is transmitted the latest.
Because the transmission interface of controller 110 is in the action that can not transmit simultaneously and receive at the same time, therefore, what controller 110 can be set that its transmission interface institute will carry out is transmission or reception data-signal.In the present embodiment, controller 110 still can transmit order data to each driver element 121～12N through transmission interface.That is to say that controller 110 can transmit order data through transmission interface and move with the setting of carrying out the data-transmission mode between controller 110 and driver element 121～12N to each driver element 121～12N before the biography of carrying out data-signal is received.Bright specifically, when carrying out general display action, controller 110 can be earlier through transmission interface transmit order data to each driver element 121～12N with inform each driver element 121～12N at present received data-signal be video data DDATA.Each driver element 121～12N then can drive each display line 151～15N according to received video data DDATA.
And transmitting as the video data DDATA of controller 110 when coming to an end, the order data that controller 110 can transmit a passback order through transmission interface returns action to inform each driver element 121～12N to each driver element 121～12N.And when each driver element 121～12N receives this passback order; Then with its driver element that the status information that obtains is back to its previous stage of detecting, in regular turn the status information of all driver element 121～12N is passed controller 110 (wherein the status information of driver element 121 is directly to be transferred in the controller 110) in regular turn.
Subsidiary one what carry is that the controller 110 of present embodiment can utilize display 100 to carry out returning informing of order when black plug shows, and makes each driver element 121～12N when black plug shows, return status information.Be shown as technology well known to those of ordinary skill in the art about carrying out black plug in the display, then seldom give unnecessary details at this.The status information of each driver element 121～12N then can be detected and obtained in advance, and is receiving passback order back passback status information to controller 110.
Below please with reference to Fig. 2 A, Fig. 2 A shows an embodiment of the driver element of the embodiment of the invention.Driver element 200 comprises shift register 210, status information register 220, mode switch circuit 230, video data register 240, state detecting device 250 and driving signal generator 260.Shift register 210 is coupled to driver element or the controller that is adjacent.Shift register 210 receiving frequency signals CK, and utilize the sequence transmission mode to come to receive by the adjacent data-signal that driver element or controller were received according to frequency signal CK.On the other hand, shift register 210 also can be used for storing temporal data, and utilizes the sequence transmission mode that its original temporal data that stores is sent to adjacent driver element or controller according to frequency signal CK.
250 of state detecting devices couple driver element 200 corresponding these display lines that drive, and are used for detecting the state of driven display line and obtain status information STI.State detecting device 250 also is coupled to status information register 220, and the status information STI that is obtained is sent to status information register 220.Status information register 220 couples shift register 210 in addition, and temporary status information STI.When driver element 200 receives the passback order, then status information STI unloading is become temporal data to shift register 210.Shift register 210 can will be spread out of as the status information STI of temporal data according to frequency signal CK.
230 in mode switch circuit couples end points IO1 and the IO2 that shift register 210 and driver element 200 couple adjacent driver element or controller.After driver element 200 receives passback order, then make mode switch circuit 230 can produce direction signals, the output SHTO of shift register 210 is reached the driver element or the controller of the previous stage adjacent with driver element 200 through end points IO1.Relative, if before driver element 200 does not receive the passback order, then make mode switch circuit 230 pass through the direction signal that is produced, the output SHTO of shift register 210 is reached the driver element of the back one-level adjacent through end points IO2 with driver element 200.
240 in video data register couples shift register 210; When driver element 200 detects control data-signal that device transmitted when being video data; Shift register 210 can receive video data according to frequency signal CK, and transmit video data DDATA1 to video data register 240 to keep in.240 in video data register can be sent to driving signal generator 260 with stored video data DDATA1.
260 of driving signal generators produce corresponding driving electric signal DRV according to video data DDATA1 makes driver element 200 drive the corresponding display line that drives.At this, driving electric signal DRV can be the drive current or the driving voltage of analog format, and when video data DDATA1 was the embodiment of data of a numeral, driving signal generator 260 can be a D/A conversion circuit.
Below please with reference to Fig. 2 B, Fig. 2 B shows another embodiment of the driver element 200 of the embodiment of the invention.Different with the last embodiment of Fig. 2 A demonstration is that the driver element 200 that Fig. 2 B shows also comprises three-state buffer TBUF1 and TBUF2.Three-state buffer TBUF2 is serially connected between mode switch circuit 230 and driver element 200 and end points IO1 that the driver element of adjacent next stage is connected.Whether three-state buffer TBUF2 spreads out of the driver element of video data to next stage according to direction signal FWD.Three-state buffer TBUF1 then is serially connected between mode switch circuit 230 and driver element 200 and end points IO1 that the driver element of adjacent upper level is connected.Three-state buffer TBUF2 determines whether spreading out of the driver element of video data to upper level according to the reverse REV of direction signal.
Please note at this; Direction signal REV and FWD can be used for not carrying out forward data signal to each driver element when controller; And when also failing to give notice the passback action that each driver element carries out status data, make two exit point IO1 of driver element 200 and the state that IO2 presents suspension joint (floating).Thus, between each driver element when each driver element carries out the switching of transmission state institute's contingent output signal conflicting phenomenon can effectively be avoided.
At last please with reference to Fig. 3, Fig. 3 shows the synoptic diagram of drive unit 300 of the display of another embodiment of the present invention.Drive unit 300 comprises controller 300 and driver element 321～32N.Driver element 321～32N is connected in series each other, and the driver element 321 of the first order is connected directly to controller 300.Inequality with the embodiment that Fig. 1 shows, the driver element 321～32N of present embodiment respectively comprises by-pass unit BP1～BPN.With driver element 321 is example, and driver element 321 included by-pass unit BP1 couple between the end points IO2 and end points IO1 that connects adjacent driver element 322 and controller 310.If with driver element 322 is example, driver element 322 included by-pass unit BP2 then couple between the end points IO3 and end points IO4 that connects two adjacent driver elements 322 and 323.
By-pass unit BP1～BPN directly connects its two-end-point that connects according to test signal T1～TN respectively or breaks off.Test signal T1～TN can be orderly sent to each driver element 321～32N through data-signal through controller 310.In the present embodiment, in the time of will obtaining the status information of driver element 32N fast as if controller 310, can make by-pass unit BP1～BP (N-1) be the state of conducting, and make the state of by-pass unit BPN for breaking off through test signal T1～TN.Thus, the status information of driver element 32N just can be back to controller 310 fast.
In sum, the present invention utilizes the transmission interface that each driver element had in the drive unit, carries out the transmission of video data or the passback of status data.Under the situation of the transmission interface that does not increase driver element and controller, reach the effect that controller and each driver element are communicated with each other.Under the situation that does not increase circuit cost, the benefit of system under effectively promoting.
Though the present invention discloses as above with embodiment, so it is not in order to limiting the present invention, any under those of ordinary skill in the technical field, when can doing a little change and retouching, and do not break away from the spirit and scope of the present invention.
Claims (10)
1. the drive unit of a display comprises:
One controller passes receipts one data-signal according to a transmission interface; And
A plurality of driver elements; In order to drive a plurality of display lines of this display; Those driver elements are coupled in series in regular turn, and the driver element of the first order directly connects this transmission interface of this controller, respectively a status information of this driver element and corresponding respectively this display line that drives of detecting; Respectively this driver element receives and judges when this data-signal is a passback order, transmits respectively this status information to this controller through this transmission interface to carry out a passback action.
2. the drive unit of display according to claim 1; When wherein respectively this driver element carries out this passback action; Transmit respectively this status information to this controller through being coupled in respectively the driver element between this driver element and this controller; When this driver element directly connected this controller, this driver element directly transmitted this corresponding status information to this controller.
3. the drive unit of display according to claim 1; Wherein the driver element of the first order directly receives this control command by this controller, and the driver element between this driver element and this controller receives this control command to other driver element through being coupled in respectively.
4. the drive unit of display according to claim 1, wherein respectively this driver element judges that when this data-signal was a video data, respectively this driver element drove corresponding respectively this display line according to this video data.
5. the drive unit of display according to claim 1, wherein those status informations comprise those display lines and those driver elements connection status and those driver elements cross thermal information.
6. the drive unit of display according to claim 4, wherein respectively this driver element comprises:
One shift register is coupled to respectively this driver element or this controller that are adjacent, receives and stores this data-signal or spread out of a temporal data that stores in this shift register according to a sequence transmission mode and move to carry out this passback;
One state detecting device couples corresponding respectively this display line that drives, and detecting is this display line and obtain this status information respectively;
One status information register couples this shift register and this state detecting device, in order to temporary this status information, and when respectively this driver element carries out this passback action, becomes this temporal data in this status information of unloading to this shift register; And
One mode switch circuit couples this shift register, in order to when this data-signal is ordered for this passback, produces a direction signal, makes this shift register spread out of this temporal data.
7. the drive unit of display according to claim 6, wherein respectively this driver element also comprises:
One video data register couples this shift register, and when this this data-signal of mode switch circuit detecting was this video data, this shift register transmitted this video data to this video data register to keep in.
8. the drive unit of display according to claim 7, wherein respectively this driver element also comprises:
One driving signal generator, be coupled in this video data register and respectively this driver element corresponding drive respectively between this display line, produce according to this video data and to drive electric signal and drive respectively this display line.
9. the drive unit of display according to claim 7, wherein respectively this driver element also comprises:
One first three-state buffer is serially connected between the connection end point of driver element of this mode switch circuit and the next stage that respectively this driver element is adjacent, and this first three-state buffer determines whether spreading out of this video data according to this direction signal; And
One second three-state buffer is serially connected between the connection end point of driver element of this mode switch circuit and the upper level that respectively this driver element is adjacent, and this second three-state buffer oppositely determines whether spreading out of this temporary data according to this direction signal.
10. the drive unit of display according to claim 1, wherein respectively this driver element also comprises:
One bypass unit; Be coupled in respectively between one first end points and one second end points that this driver element connects two adjacent driver elements or adjacent driver element and this controller, this by-pass unit directly connects this first end points and this second end points according to a test signal.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW100103983A TW201234073A (en) | 2011-02-01 | 2011-02-01 | Driving apparatus of display |
| TW100103983 | 2011-02-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102622953A true CN102622953A (en) | 2012-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100758010A Pending CN102622953A (en) | 2011-02-01 | 2011-03-23 | Driving device of display |
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| Country | Link |
|---|---|
| CN (1) | CN102622953A (en) |
| TW (1) | TW201234073A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112530337A (en) * | 2019-09-18 | 2021-03-19 | 矽创电子股份有限公司 | Video data display device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020084972A1 (en) * | 2000-12-28 | 2002-07-04 | Kim Jong Dae | Liquid crystal display device and method for driving the same |
| CN1841448A (en) * | 2005-04-01 | 2006-10-04 | 宏锴科技股份有限公司 | Luminescent assembly LED cluster lamp spot beam control system |
| CN101197114A (en) * | 2006-12-04 | 2008-06-11 | 奇景光电股份有限公司 | Method of transmitting data from timing controller to source driving device in LCD |
| CN101853643A (en) * | 2010-06-04 | 2010-10-06 | 友达光电股份有限公司 | Control system and method of liquid crystal display |
-
2011
- 2011-02-01 TW TW100103983A patent/TW201234073A/en unknown
- 2011-03-23 CN CN2011100758010A patent/CN102622953A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020084972A1 (en) * | 2000-12-28 | 2002-07-04 | Kim Jong Dae | Liquid crystal display device and method for driving the same |
| US7336253B2 (en) * | 2000-12-28 | 2008-02-26 | Lg.Philips Lcd Co., Ltd. | Liquid crystal display device and method for driving the same |
| CN1841448A (en) * | 2005-04-01 | 2006-10-04 | 宏锴科技股份有限公司 | Luminescent assembly LED cluster lamp spot beam control system |
| CN101197114A (en) * | 2006-12-04 | 2008-06-11 | 奇景光电股份有限公司 | Method of transmitting data from timing controller to source driving device in LCD |
| CN101853643A (en) * | 2010-06-04 | 2010-10-06 | 友达光电股份有限公司 | Control system and method of liquid crystal display |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112530337A (en) * | 2019-09-18 | 2021-03-19 | 矽创电子股份有限公司 | Video data display device |
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| Publication number | Publication date |
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| TW201234073A (en) | 2012-08-16 |
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Application publication date: 20120801 |