CN201191496Y - LED constant current driving chip having fault retransmission function - Google Patents
LED constant current driving chip having fault retransmission function Download PDFInfo
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- CN201191496Y CN201191496Y CNU2007201960507U CN200720196050U CN201191496Y CN 201191496 Y CN201191496 Y CN 201191496Y CN U2007201960507 U CNU2007201960507 U CN U2007201960507U CN 200720196050 U CN200720196050 U CN 200720196050U CN 201191496 Y CN201191496 Y CN 201191496Y
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Abstract
Disclosed is an LED constant-current driving chip with a fault feedback function, the chip internally comprises a shift register, a data latch 2, a data driver 3, a constant current source 4, an open-circuit/short-circuit diagnosis instrument 5, Schmitt triggers 61-66, tri state gates 71-74 and a negation gate 8. In design of the LED constant-current chip, unidirectional serial data input and output are changed into bidirectional data input and output, four tri state gates, one negation gate and one Schmitt trigger are added, and MODE mode-input signals are utilized to control the transmission direction of data. The LED constant-current driving chip has the advantages that based on the original functions of the LED constant-current chip, the LED constant-current driving chip utilizes inherent data passage to realize a fault diagnosis information feedback function, overcomes shortages that the single-point fault diagnosis of the LED constant-current driving chip only can be in consequent back pass, brings convenience for the application of a high-grade LED display screen of the single-point fault diagnosis, and reduces the integral cost of system design, thereby being favorable for widely popularization and application of LED display screens.
Description
Technical field
The utility model relates to the LED display technique, relates generally to a kind of LED constant-current driven chip with fault retransmission function.
Background technology
In recent years, because the LED flat pannel display itself has the brightness height, operating voltage is low, power consumption is little, it is integrated to be easy to, it is simple to drive, the life-span is long, shock-resistant and the stable performance plurality of advantages, so its speed of development is very fast.Constantly progressive with making the LED display technique, make it show in large tracts of land, be widely used in fields such as physical culture, advertisement, finance, exhibition, traffic, airports especially, and at present just towards high brightness more, more high weather resistance and luminous density, uniformity of luminance, panchromaticization development, prospect is very wide.
The technical scope of LED display mainly comprises semiconductor photoelectric device technology, electronic circuit technology, integrated circuit technique, frame treatment technology, the information transmission technology, computer networking technology and electronic product manufacturing and electronic product installation work correlation technique.Wherein the appearance of the LED constant-current driven chip in the integrated circuit technique and development have vital role in the full-color demonstration of LED, and it has significantly improved the quality of LED flat pannel display.The LED constant-current driven chip is except that the inherent function with constant-current driving at present, the Single Point of Faliure diagnostic function has appearred, as if record be tested and be given to this function can to the open circuit and the short circuit of LED single-point, and this has brought benefit to the fault judgement and the maintenance of LED display.But this good function is not employed company and the designer extensively adopts, reason is the transmission of failure message of record and the shared serial-port of transmission of video data, and direction of transfer is identical, this requires the designer at a distance diagnostic message to be returned to control panel at the end of LED display, and needs the extra quantity that increases Hardware I/O mouth.The increase of telediagnosis transmission of Information and Hardware I/O mouth quantity makes that the application of LED constant-current driven chip Single Point of Faliure diagnostic function is very inconvenient, has also additionally increased cost, does not therefore obtain welcoming and wide popularization and application on market.
The utility model content
LED constant-current driven chip failure diagnosis information needs long-distance transmissions and increases Hardware I/O mouth quantity in the prior art in order to overcome, cause the Single Point of Faliure diagnostic function to use inconvenience and cost problem of higher, the utility model proposes a kind of LED constant-current driven chip with fault retransmission function.This LED constant-current driven chip is except that having total constant-current driving of such chip and LED single-point open circuit, short-circuit test function, change the unidirectional input of serial data, output into two-way input and output, and increased the flow direction that 4 triple gates, not gate and Schmidt trigger are controlled serial data.This chip forward transmits conventional video data at the data presentation state, gather LED lamp failure information as need, only need to send the fault collection control signal by controller, the LED constant-current driven chip promptly is in information passback state, this moment, the delivery outlet of serial data changed the input port into, the input port changes delivery outlet into, and the failure message of collection is given upper level LED constant-current driven chip or system controller with reverse transfer.
The utility model is that the technical scheme that its technical matters of solution is adopted is: a kind of LED constant-current driven chip with fault retransmission function, chip internal comprise shift register, data latches 2, data driver 3, constant current source 4, open circuit/short trouble diagnostor 5, Schmidt trigger 61～66, triple gate 71～74 and not gate 8.
Described Schmidt trigger 61 inputs meet data I/O SER_in/out0, output to triple gate 71;
Described Schmidt trigger 62 inputs meet shift clock SCLK, output to shift register;
Described Schmidt trigger 63 inputs meet data latch signal LATCH, output to shift register and data latches 2;
Described Schmidt trigger 64 input on/off control signal EN output to data driver 3;
Described Schmidt trigger 65 inputs connect MODE mode initialization input signal, output to triple gate 73, triple gate 74, not gate 8 and shift register;
Described Schmidt trigger 66 inputs meet data I/O SER_in/out1, output to triple gate 74;
Described not gate 8 inputs connect Schmidt trigger 65, output to triple gate 71, triple gate 72;
Described triple gate 71 inputs connect Schmidt trigger 61, and ternary control connects not gate 8, outputs to shift register;
Described triple gate 72 inputs connect shift register, and ternary control connects not gate 8, outputs to data I/O SER_in/out1;
Described triple gate 73 inputs connect shift register, and ternary control connects Schmidt trigger 65, outputs to data I/O SER_in/out0;
Described triple gate 74 inputs connect Schmidt trigger 66, and ternary control connects Schmidt trigger 65, outputs to shift register;
Described shift register, the serial data input connects triple gate 71,74, parallel input connects open circuit/short trouble diagnostor 5, the shift clock input connects Schmidt trigger 62, the data latch signal input connects Schmidt trigger 63, mode signal input connects Schmidt trigger 65, parallelly outputs to data latches 2, serial outputs to triple gate 72,73;
Described data latches 2, the data latch signal input connects Schmidt trigger 63, and parallel input connects shift register, the parallel data driver 3 that outputs to;
Described data driver 3, parallel input connects data latches 2, turn-offs the control signal input and connects Schmidt trigger 64, the parallel constant current source 4 that outputs to;
Described constant current source 4, parallel input connects data driver 3, parallel constant current source output OUT0～OUT15 and the open circuit/short trouble diagnostor 5 of outputing to;
Described open circuit/short trouble diagnostor 5, parallel input connects constant current source 4, the parallel shift register that outputs to.
Described shift register can be 16 bit shift register, and described data latches can be 16 bit data latchs (2), and described data driver can be 16 bit data drivers (3), and described constant current source can be 16 constant current sources (4).
Described shift register can also be 8 bit shift register, and described data latches can also be 8 bit data latchs (2), and described data driver can also be 8 bit data drivers (3), and described constant current source can also be 8 constant current sources (4).
Described mode initialization input signal is fault acquisition controlling signal MODE, by the mode of operation of its control LED constant current chip;
Described fault collection control signal MODE when its when low, will open LED constant current chip front end serial I/O and be input, rear end serial I/O is output, the move to right normal display data of serial input of shift register;
When described fault collection control signal MODE is high when it, LED constant current chip front end serial I/O is output, rear end serial I/O is input, the failure message of parallel simultaneously input latchs effectively, shift register will move to right and/or the move to left failure message of parallel input and the failure message that other LED constant current chip serial of back is imported.
Described shift register is to incorporate/seal in right-shift register 1 into.
Described shift register is 16 bidirectional shift registers 9.
Described 16 bit shift register comprise that one 16 bit string goes into right-shift register and one 16 and incorporate/seal in the register that moves to left into.
Compared with prior art, innovative point of the present utility model is, in LED constant current chip design, change unidirectional serial data input, be output as the bi-directional data input and output, and increase by 4 triple gates, a not gate and a Schmidt trigger, utilize the MODE mode input signal to come the transmission direction of control data.
The beneficial effects of the utility model are on the basis of the former function of LED constant current chip, utilize intrinsic data channel to realize the failure diagnosis information retransmission function in the minimum mode of cost, having solved the diagnosis of LED constant-current driven chip Single Point of Faliure can only be along the deficiency of back kick, for the high-grade LED display application with Single Point of Faliure diagnosis has brought convenience, also can reduce the whole cost of system design, thereby help the LED display wide popularization and application.
Description of drawings
Fig. 1 can not return the LED constant current chip internal logical design synoptic diagram of failure diagnosis information for prior art;
Fig. 2 can return the LED constant current chip internal logical design synoptic diagram of failure diagnosis information for the utility model first embodiment.
Fig. 3 can return the LED constant current chip internal logical design synoptic diagram of failure diagnosis information for the utility model second embodiment.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described.
Fig. 1 is the LED constant current chip internal logical design synoptic diagram of current tape jam diagnosis, and Fig. 2 can return the LED constant current chip internal logical design synoptic diagram of failure diagnosis information for the utility model first embodiment.Two kinds of LED constant-current driven chips as depicted in figs. 1 and 2 comprise that 16 are incorporated/seal in into right-shift register 1,16 bit data latchs, 2,16 bit data drivers 3,16 constant current sources 4, open circuit/short trouble diagnostor 5, Schmidt trigger 61～66, triple gate 71～74 and not gates 8.Comparison diagram 1 and Fig. 2 are as can be seen, both body interior logical designs are basic identical, but Fig. 2 all changes unidirectional input, the output of serial data into two-way input and output, and having increased the flow direction that 4 triple gates, not gate and Schmidt trigger are controlled serial data, this is the key Design place that can return the LED constant current chip of failure diagnosis information.Now can return the basic functional principle of the LED constant current chip of failure diagnosis information by Fig. 2 narration:
Described Schmidt trigger 61～66th, the input waveform shaping circuit, can improve interference free performance, wherein Schmidt trigger 61 is handled serial data input and output SER_in/out0 (meeting serial data input SER_in in Fig. 1), Schmidt trigger 62 is handled shift clock SCLK, Schmidt trigger 63 is handled latch signal LATCH, Schmidt trigger 64 is handled and is turn-offed control signal EN, Schmidt trigger 65 tupes are set input signal MODE, and Schmidt trigger 66 is handled serial data input and output SER_in/out1 (meeting serial data input SER_out in Fig. 1);
Described not gate 8, input connects the MODE signal, and anti-phase back is to triple gate 71,72;
71 inputs of described triple gate connect Schmidt trigger 61, and three-state control signal connects not gate 8, when the MODE signal when low, will open I/O SER_in/out0 and incorporate/seal in right-shift register 1 into for being input to 16;
Described triple gate 72 inputs connect 16 serial outputs of incorporating/sealing in right-shift register 1 into, three-state control signal connects not gate 8, when the MODE signal when low, to open serial I/O SER_in/out1 for output, the displacement video data of incorporating/seal in right-shift register 1 into from 16 will be exported to next stage LED constant current chip;
Described triple gate 73 inputs connect 16 serial outputs of incorporating/sealing in right-shift register 1 into, ternary control connects Schmidt trigger 65, when MODE signal when being high, will open from 16 fault diagnosis shifted data of incorporating/sealing in right-shift register 1 into to the output of serial I/O SER_in/out0 mouth;
Described triple gate 74 inputs connect Schmidt trigger 66, ternary control connects Schmidt trigger 65, when MODE signal when being high, will open serial I/O SER_in/out1 and be input, the failure message serial of follow-up LED constant current chip is input to 16 incorporates/seal in right-shift register 1 into;
Described MODE input signal, when MODE is input as when low, LED constant current chip is in forward transmission state of normal data, and as MODE when being high, the LED constant-current driven chip is in failure message passback state;
Incorporate/seal in right-shift register 1 into for described 16, the serial data input connects triple gate 71,74, parallel input connects open circuit/short trouble diagnostor 5, the shift clock input connects Schmidt trigger 62, the data latch signal input connects Schmidt trigger 63, mode signal input connects Schmidt trigger 65, parallelly outputs to 16 bit data latchs 2, serial outputs to triple gate 72,73.Incorporating/seal in right-shift register 1 into for 16 has two kinds of duties, is described below:
1) at mode input signal MODE when low, incorporate/seal in right-shift register 1 into for 16 and be operated in conventional video data displaced condition, it finishes moving to right of conventional serial video data input that the SER_in/out0 mouth enters by Schmidt trigger 61, triple gate 71 under shift clock SCLK effect, the parallel 16 bit data latchs 2 that output to, serial output are then by triple gate 72 to SER_in/out1 outputs.
2) incorporate/seal in right-shift register 1 at mode input signal MODE when being high for described 16, be operated in fault data passback state, it finishes the parallel input from 16 fault datas of open circuit/short trouble diagnostor 5 under data latch signal LATCH effect, under input shift clock SCLK effect, finish 16 fault datas of this chip and SER_in/out1 mouth are passed through Schmidt trigger 66, moving to right of the follow-up LED constant current chip serial fault data that triple gate 74 enters, serial output is then exported by triple gate 73 to SER_in/out0, thereby finishes the passback of fault data.
Described 16 bit data latchs 2 under the effect from the latch signal LATCH of Schmidt trigger 63, latch the parallel output data of incorporating/seal in right-shift register 1 into from 16, the parallel 16 bit data drivers 3 that output to of latch data;
Described 16 bit data drivers 3 drive and output to 16 constant current source outputs 4 to the parallel input data from 16 bit data latchs 2, and cut-offfing of 16 constant current sources outputs 4 controlled in step-by-step.Turn-offing under the effect of control signal EN from Schmidt trigger 64,16 bit data drivers 3 can turn-off whole outputs of 16 constant current sources 4;
Described 16 constant current sources 4 are 16 constant current OUT0～OUT15 delivery outlets, link to each other with open circuit/short trouble diagnostor 5 simultaneously;
The running status of described open circuit/16 constant current sources 4 of short trouble diagnostor 5 records, its data parallel outputs to 16 and incorporates/seal in right-shift register 1 into.
Fig. 3 can return the LED constant current chip internal logical design synoptic diagram of failure diagnosis information for the utility model second embodiment.LED constant-current driven chip as shown in Figure 3 comprises 16 bidirectional shift registers, 9,16 bit data latchs, 2,16 bit data drivers 3,16 constant current sources 4, open circuit/short trouble diagnostor 5, Schmidt trigger 61～66, triple gate 71～74 and not gates 8.Now can return the basic functional principle of the LED constant current chip of failure diagnosis information by Fig. 3 narration:
Described Schmidt trigger 61～66th, the input waveform shaping circuit, can improve interference free performance, wherein Schmidt trigger 61 is handled serial data input and output SER_in/out0, Schmidt trigger 62 is handled shift clock SCLK, Schmidt trigger 63 is handled latch signal LATCH, Schmidt trigger 64 is handled and is turn-offed control signal EN, and Schmidt trigger 65 tupes are set input signal MODE, and Schmidt trigger 66 is handled serial data input and output SER_in/out1;
Described MODE input signal, when MODE is input as when low, LED constant current chip is in forward transmission state of normal data, and as MODE when being high, the LED constant-current driven chip is in failure message passback state;
Described not gate 8, input connects the MODE signal, and anti-phase back is to triple gate 71,72;
71 inputs of described triple gate connect Schmidt trigger 61, and three-state control signal connects not gate 8, when the MODE signal when low, will open I/O SER_in/out0 for input, the serial video data is input to 16 two-way left input/output ports that move register 9;
Described triple gate 72 inputs connect 16 bidirectional shift registers, 9 right input/output ports, three-state control signal connects not gate 8, when the MODE signal when low, to open serial I/O SER_in/out1 for output, export to next stage LED constant current chip from the dextroposition video data of 16 bidirectional shift registers 9;
Described triple gate 73 inputs connect the left input/output port of 16 bidirectional shift registers 9, ternary control connects Schmidt trigger 65, when MODE signal when being high, will open the fault diagnosis data of shifting left from 16 bidirectional shift registers 9 to the output of serial I/O SER_in/out0 mouth;
Described triple gate 74 inputs connect Schmidt trigger 66, ternary control connects Schmidt trigger 65, when MODE signal when being high, to open serial I/O SER_in/out1 and be input, the failure message serial of follow-up LED constant current chip will be input to the left input/output port of 16 bidirectional shift registers 9;
Described 16 bidirectional shift registers 9, left side serial data input/output port connects triple gate 71 and triple gate 73, right serial data input/output port connects triple gate 72 and triple gate 74, parallel input connects open circuit/short trouble diagnostor 5, the shift clock input connects Schmidt trigger 62, the data latch signal input connects Schmidt trigger 63, and the mode signal input connects Schmidt trigger 65, the parallel 16 bit data latchs 2 that output to.16 bidirectional shift registers 9 have two kinds of duties, are described below:
1) at mode input signal MODE when low, 16 bidirectional shift registers 9 are operated in conventional video data displaced condition, it finishes moving to right of conventional serial video data input that the SER_in/out0 mouth enters by Schmidt trigger 61, triple gate 71 under shift clock SCLK effect, the parallel 16 bit data latchs 2 that output to, serial output are then by triple gate 72 to SER_in/out1 outputs.
2) described 16 bidirectional shift registers 9 are at mode input signal MODE when being high, be operated in fault data passback state, it finishes the parallel input from 16 fault datas of open circuit/short trouble diagnostor 5 under data latch signal LATCH effect, under input shift clock SCLK effect, finish 16 fault datas of this chip and SER_in/out1 mouth are passed through Schmidt trigger 66, moving to left of the follow-up LED constant current chip serial fault data that triple gate 74 enters, serial output is then exported by triple gate 73 to SER_in/out0, thereby finishes the passback of fault data.
Described 16 bit data latchs 2 under the effect from the latch signal LATCH of Schmidt trigger 63, latch the parallel output data from 16 bidirectional shift registers 9, the parallel 16 bit data drivers 3 that output to of latch data;
Described 16 bit data drivers 3 drive and output to 16 constant current source outputs 4 to the parallel input data from 16 bit data latchs 2, and cut-offfing of 16 constant current sources outputs 4 controlled in step-by-step.Turn-offing under the effect of control signal EN from Schmidt trigger 64,16 bit data drivers 3 can turn-off whole outputs of 16 constant current sources 4;
Described 16 constant current sources 4 are 16 constant current OUT0～OUT15 delivery outlets, link to each other with open circuit/short trouble diagnostor 5 simultaneously;
The running status of described open circuit/16 constant current sources 4 of short trouble diagnostor 5 records, its data parallel outputs to 16 bidirectional shift registers 9.
Though the utility model is described with reference to current embodiment; but those skilled in the art will be appreciated that; above-mentioned embodiment only is used for illustrating the utility model; be not to be used for limiting protection domain of the present utility model; any within spirit of the present utility model and principle scope; any modification of being done, equivalence replacement, improvement etc. all should be included within the rights protection scope of the present utility model.For example 16 bit shift register being divided into one 16 bit string goes into right-shift register and one 16 and incorporates/seal in the register that moves to left into and realize the fault retransmission function.For example four triple gate equivalences can be replaced by switch etc. again.
Claims (8)
1, a kind of LED constant-current driven chip with fault retransmission function is characterized in that: described chip comprises shift register, data latches (2), data driver (3), constant current source (4), open circuit/short trouble diagnostor (5), Schmidt trigger (61)～(66), triple gate (71)～(74) and not gate (8);
Described Schmidt trigger (61) input meets data I/O SER_in/out0, outputs to triple gate (71);
Described Schmidt trigger (62) input meets shift clock SCLK, outputs to shift register;
Described Schmidt trigger (63) input meets data latch signal LATCH, outputs to shift register and data latches (2);
Described Schmidt trigger (64) input on/off control signal EN outputs to data driver (3);
Described Schmidt trigger (65) input connects the mode initialization input signal, outputs to triple gate (73), triple gate (74), not gate (8) and shift register;
Described Schmidt trigger (66) goes into to connect data I/O SER_in/out1, outputs to triple gate (74);
Described not gate (8) input connects Schmidt trigger (65), outputs to triple gate (71), triple gate (72);
Described triple gate (71) input connects Schmidt trigger (61), and ternary control connects not gate (8), outputs to shift register;
Described triple gate (72) input connects shift register, and ternary control connects not gate (8), outputs to data I/O SER_in/out1;
Described triple gate (73) input connects shift register, and ternary control connects Schmidt trigger (65), outputs to data I/O SER_in/out0;
Described triple gate (74) input connects Schmidt trigger (66), and ternary control connects Schmidt trigger (65), outputs to shift register;
Described shift register, the serial data input connects triple gate (71), (74), parallel input connects open circuit/short trouble diagnostor (5), the shift clock input connects Schmidt trigger (62), the data latch signal input connects Schmidt trigger (63), mode signal input connects Schmidt trigger (65), parallelly outputs to data latches (2), serial outputs to triple gate (72), (73);
Described data latches (2), the data latch signal input connects Schmidt trigger (63), and parallel input connects shift register, the parallel data driver (3) that outputs to;
Described data driver (3), parallel input connect data latches (2), turn-off the control signal input and connect Schmidt trigger (64), the parallel constant current source (4) that outputs to;
Described constant current source (4), parallel input connect bit data driver (3), parallel constant current source output OUT0～OUT15 and the open circuit/short trouble diagnostor (5) of outputing to;
Described open circuit/short trouble diagnostor (5), parallel input connects constant current source (4), the parallel shift register that outputs to.
2, LED constant-current driven chip according to claim 1, it is characterized in that: described shift register is 16 bit shift register, described data latches is 16 bit data latchs (2), and described data driver is 16 bit data drivers (3), and described constant current source is 16 constant current sources (4).
3, LED constant-current driven chip according to claim 1, it is characterized in that: described shift register is 8 bit shift register, described data latches is 8 bit data latchs (2), and described data driver is 8 bit data drivers (3), and described constant current source is 8 constant current sources (4).
4, according to claim 2 or 3 described LED constant-current driven chips, it is characterized in that: described shift register is to incorporate/seal in right-shift register (1) into.
5, according to claim 1 or 4 described LED constant-current driven chips, it is characterized in that: described mode initialization input signal is fault acquisition controlling signal MODE, by the mode of operation of its control LED constant current chip;
Described fault collection control signal MODE when its when low, will open LED constant current chip front end serial I/O and be input, rear end serial I/O is output, incorporates/seal in the move to right normal display data of serial input of right-shift register (1) into;
When described fault collection control signal MODE is high when it, to open LED constant current chip front end serial I/O and be output, rear end serial I/O is input, the failure message of parallel simultaneously input latchs effectively, incorporates/seal in right-shift register (1) will the move to right failure message of parallel input and the failure message that other LED constant current chip serial of back is imported into.
6, according to claim 2 or 3 described LED constant-current driven chips, it is characterized in that: described shift register is bidirectional shift register (9).
7, according to claim 1 or 6 described LED constant-current driven chips, it is characterized in that:
Described fault collection control signal MODE when its when low, will open LED constant current chip front end serial I/O and be input, rear end serial I/O is output, the move to right normal display data of serial input of bidirectional shift register (9);
When described fault collection control signal MODE is high when it, to open LED constant current chip front end serial I/O and be output, rear end serial I/O is input, the failure message of parallel simultaneously input latchs effectively, bidirectional shift register (9) will the move to left failure message of parallel input and the failure message that other LED constant current chip serial of back is imported.
8, according to claim 2 or 3 described LED constant-current driven chips, it is characterized in that: described shift register comprises that one seals in right-shift register and one and incorporates/seal in the register that moves to left into.
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| CNU2007201960507U CN201191496Y (en) | 2007-12-14 | 2007-12-14 | LED constant current driving chip having fault retransmission function |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101964171A (en) * | 2010-09-16 | 2011-02-02 | 深圳市明微电子股份有限公司 | Data transmission method and data receiving device |
| CN103021313A (en) * | 2011-09-23 | 2013-04-03 | 三星电子株式会社 | Data transmission method, driver circuit for data transmission, and display driver apparatus |
| CN105446239A (en) * | 2016-01-11 | 2016-03-30 | 浙江大学 | Eight-bit serial-parallel conversion driving chip suitable for heavy-current control driving |
| CN111798792A (en) * | 2020-09-08 | 2020-10-20 | 杭州视芯科技有限公司 | LED display system, constant current driving circuit and display control method |
| CN112654119A (en) * | 2020-12-22 | 2021-04-13 | 北京显芯科技有限公司 | LED drive test method, driver, system and electronic equipment |
| WO2022127978A1 (en) | 2020-12-16 | 2022-06-23 | FEV Group GmbH | System for controlling and diagnosing electronic components |
| CN114664239A (en) * | 2019-07-31 | 2022-06-24 | 深圳市晶泓科技有限公司 | LED display screen |
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2007
- 2007-12-14 CN CNU2007201960507U patent/CN201191496Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101964171A (en) * | 2010-09-16 | 2011-02-02 | 深圳市明微电子股份有限公司 | Data transmission method and data receiving device |
| CN101964171B (en) * | 2010-09-16 | 2013-05-22 | 深圳市明微电子股份有限公司 | Data transmission method |
| CN103021313A (en) * | 2011-09-23 | 2013-04-03 | 三星电子株式会社 | Data transmission method, driver circuit for data transmission, and display driver apparatus |
| CN105446239A (en) * | 2016-01-11 | 2016-03-30 | 浙江大学 | Eight-bit serial-parallel conversion driving chip suitable for heavy-current control driving |
| CN114664239A (en) * | 2019-07-31 | 2022-06-24 | 深圳市晶泓科技有限公司 | LED display screen |
| CN111798792A (en) * | 2020-09-08 | 2020-10-20 | 杭州视芯科技有限公司 | LED display system, constant current driving circuit and display control method |
| WO2022127978A1 (en) | 2020-12-16 | 2022-06-23 | FEV Group GmbH | System for controlling and diagnosing electronic components |
| CN112654119A (en) * | 2020-12-22 | 2021-04-13 | 北京显芯科技有限公司 | LED drive test method, driver, system and electronic equipment |
| CN112654119B (en) * | 2020-12-22 | 2022-02-18 | 北京显芯科技有限公司 | LED drive test method, driver, system and electronic equipment |
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