CN101545591B - PCB light bar used in LED display and transmission control system thereof - Google Patents
PCB light bar used in LED display and transmission control system thereof Download PDFInfo
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- CN101545591B CN101545591B CN200810102742XA CN200810102742A CN101545591B CN 101545591 B CN101545591 B CN 101545591B CN 200810102742X A CN200810102742X A CN 200810102742XA CN 200810102742 A CN200810102742 A CN 200810102742A CN 101545591 B CN101545591 B CN 101545591B
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Abstract
The invention discloses a PCB light bar used in an LED display and a transmission control system thereof. The inside of the PCB light bar is controlled by using a single-wire transmission chip, a power positive wire, a power negative wire and a signal control wire are connected among PCBs, and the overall structure of the PCB light bar is more compact, lighter and thinner; and an LED screen made from the PCB light bar is more transparent. The PCB light bar used in the LED display comprises a plurality of PCB circuit boards and a single-wire transmission control chip, wherein each PCB circuit board comprises an LED light-emitting unit, and the LED light-emitting unit comprises at least one light emitting diode; the single-wire transmission control chip is used for controlling the luminescence of the LED light-emitting unit; and the invention is characterized in that each PCB circuit board further comprises a power positive line and a power negative line which are connected with the LED single-wire transmission control chip, and a signal control line for inputting a control signal to the LED single-wire transmission control chip to control the luminescence of the LED light-emitting unit.
Description
Technical field
The present invention relates to a kind of lighting device, particularly relate to a kind of PCB lamp bar and transmission control system thereof for the LED demonstration.
Technical background
LED is paid attention to widely with luminous efficiency height, long service life, characteristics safe and reliable and environmental protection and energy saving, light emitting diode has primary colours such as redness, blueness, green respectively, display screen can be formed pixel by a kind of LED luminous point of primary colours, also can form pixel by the LED luminous point of any two or three primary colours, controlled the brightness (more than 256 grades) of various primary colours in each pixel again by special driving circuit and control system, thereby demonstrate pictures such as coloury video, picture, literal.LED display has become the sign of urban information modernization construction as a kind of important means of information propagation.Along with socioeconomic continuous progress, and the LED Display Technique is constantly perfect, and people will more and more go deep into the understanding of LED display, and its application will be more and more wider.
Traditional LED lamp bar, the multi-thread control signal transmission of general employing, connecting line between the PCB of its inside is general to adopt the connection of four signal line to add two power lines, wire laying mode on the PCB, also be to adopt four signal line to connect to add two power lines, because connecting line is many, increased taking space in the lamp bar, and wire harness contact, relay and insurance also be multiplied, and corresponding cost is also higher.Because connecting line is many, it is huge that the volume of lamp bar just becomes, and with the display screen that this lamp bar is made, penetrating weak effect, has a strong impact on the visual range of personnel in interior of building daylighting and the building, or influence the visual range of inwardly being watched by the building outside.This shows that the multi-thread control mode when the headlight strip adoption is both uneconomical, and because a large amount of wire harness contacts exists reliability and the security of the use that makes the lamp bar lower, simultaneously because the complexity of wire harness brings many inconvenience for improvement and the production of lamp bar.
Summary of the invention
The purpose of this invention is to provide a kind of inner utilization LED single-wire transmission control chip control, have only a positive source line, a power-polar curve to be connected with a signal control line between the PCB, the small and exquisite more frivolous PCB lamp bar of overall structure; More penetrating with this LED screen of making.Technical scheme for achieving the above object is:
A kind of PCB lamp bar for the LED demonstration comprises some PCB circuit boards, and each this PCB circuit board comprises:
Some LED luminescence units, this LED luminescence unit comprises at least one light emitting diode;
The LED single-wire transmission control chip, it is luminous to control this LED luminescence unit;
It is characterized in that this PCB circuit board also comprises:
A positive source circuit and a power cathode circuit are connected with this LED single-wire transmission control chip;
A signal controlling circuit, input control signal is to this LED single-wire transmission control chip, and is luminous to control this LED luminescence unit.
Described PCB circuit board is the N layer, and wherein N is the integer more than or equal to 1.
This signal controlling circuit places between this positive source circuit and this power cathode circuit on the described PCB circuit board.
When individual layer PCB width of circuit board is identical, the electric current maximum that pass through, according to the size of current computing formula, the power cathode line width that draws is the wideest; Spacing between positive source circuit, signal controlling circuit, the power cathode circuit is the narrowest.
When N when equaling 2, a described positive source circuit places one deck of described PCB circuit board, a described power cathode circuit and a described signal controlling circuit place another layer of described PCB circuit board.
When N was 2, the width of described PCB circuit board was benchmark with positive source line width or power cathode line width.
When N equals greater than 3 the time, a described positive source circuit, a described power cathode circuit and a described signal controlling circuit are positioned at separately respectively on the layer circuit board of described PCB circuit board.
Whether described single-wire transmission control chip comprises: the cascade data receiver module receives the input data signal from system, and input data signal is extracted frequency information and data message, and effective by signal frequency and marker position confirmation signal;
The cascade data sending module produces the pulse-width signal of cascade, sends the next stage sheet to;
Local display control module is used for from the data memory module sense data and exports the direct driving LED lamp point of data.Local display control module is that under the single-point pattern, local display control module takes out data in the middle of the same address of memory module from the logical order of data memory module sense data; Under the multiple spot pattern, local display control module will take out the demonstration desired data according to the order from far-end to near-end successively from data memory module, be shown as example with 16, local display control module will be according to the 16th point, the 15th point, the 14th point ... such order is taken out the demonstration data successively, and the direct driving LED lamp point of data is read and exported to local display control module from data memory module;
Data memory module, for the data behind local display control module received code, and storage; Cascade data receiver module one end connects the cascade data sending module, and the other end connects local display module; Local display module one end connects data memory module, and the other end connects LED lamp point.
The MSIN of described single-wire transmission control chip (signal input tube pin) pin is connected with signal controlling circuit input, MSOUT (signal output pin) pin is connected with signal controlling circuit output, VCC pin and positive source circuit join, be connected with resistance between single-wire transmission control chip pin and the light emitting diode, pin GND and power cathode circuit join.
The transmission control system that is used for the PCB lamp bar of LED demonstration, comprise master control PC, frame controller, scanning monitor and PCB lamp bar, the master control PC is connected with frame controller by transmission yarn, frame controller joins by transmission yarn and scanning monitor, it is characterized in that: described PCB lamp bar is the described PCB lamp of claim 1 bar, and described scanning monitor is connected by a signal controlling circuit with described PCB lamp bar.
The transmission control system of the described PCB lamp bar that shows for LED also comprises the error condition display unit, and when the signal error of input chip, described error condition display unit output error shows signal.
Described error condition display unit is the LED lamp.
Beneficial technical effects of the present invention: utilize single line transmission chip controls, a wired positive source line, a power-polar curve are connected with a signal control line to make between the former PCB multi-thread connection only become now, wiring on the PCB circuit board also has only a positive source circuit, a power cathode circuit and a signal controlling circuit, and lamp bar overall structure is small and exquisite more frivolous; More penetrating with this LED screen of making.And reliability and the security of the use of lamp bar have been increased.
Description of drawings
Fig. 1 is overall schematic of the present invention;
Fig. 2 is single line transmission principle schematic diagram of the present invention;
Fig. 3 is that single-wire transmission control chip control signal of the present invention is handled schematic diagram;
Fig. 4 is individual layer PCB circuit board wiring mode of the present invention;
Fig. 5 is the double-deck PCB circuit board wiring of the present invention mode;
Fig. 6 is multilayer PCB circuit board wire laying mode of the present invention.
The specific embodiment:
In conjunction with Fig. 1, a kind of PCB lamp bar for the LED demonstration comprises some PCB circuit boards 11, and each this PCB circuit board 11 comprises: the LED luminescence unit, and this LED luminescence unit comprises at least one light emitting diode 10; Single-wire transmission control chip 7 (chip of 7 marks is English abbreviations of single-wire transmission control chip among the figure), it is luminous to control this LED luminescence unit; This PCB circuit board 11 also comprises: a positive source circuit 6 and a power cathode circuit 5 are connected with this LED single-wire transmission control chip 7; A signal controlling circuit 9, input control signal is to this LED single-wire transmission control chip 7, and is luminous to control this LED luminescence unit.
It comprises master control PC 1, frame controller 2, scanning monitor 3, a plurality of LED single-wire transmission control chip 7, a signal controlling circuit 9, a plurality of light emitting diodes 10 in conjunction with the transmission control system of the described PCB lamp bar that shows for LED of Fig. 1; Master control PC 1 joins by transmission yarn 4 with frame controller 2, frame controller 2 joins by transmission yarn 4 with scanning monitor 3, scanning monitor 3 links to each other by a holding wire with single-wire transmission control chip 7, by a holding wire cascade, the signal of single-wire transmission control chip 7 is by a holding wire input, output between the single-wire transmission control chip 7; Signal is from pin MSIN (signal input tube pin) the port input cascade data reception module of single-wire transmission control chip 7, the cascade data receiver module extracts frequency information and data message from input signal, after confirming that frequency effectively, data are exported through local display control module, direct driving LED lamp point, produced simultaneously the pulse-width signal of cascade by the cascade data sending module after to the input signal recompile, send the next stage chip to.
In conjunction with Fig. 2:
The MSIN pin of single-wire transmission control chip 7 and signal controlling circuit input connect, MSOUT (signal output pin) pin is connected with signal controlling circuit output, VCC pin and positive source circuit join, be connected with resistance 17 between single-wire transmission control chip 7 pins and the light emitting diode 10, pin GND and power cathode circuit join; This single-wire transmission control chip also arranges an error condition and shows pin 18, be connected with resistance 17 between error condition demonstration pin 18 and the light emitting diode 10, when importing the signal error of single-wire transmission control chip 7, error condition display unit LED lamp 10 can be reported to the police in flicker.
In conjunction with Fig. 3:
Whether described single-wire transmission control chip comprises: the cascade data receiver module receives the input data signal from system, and input data signal is extracted frequency information and data message, and effective by signal frequency and marker position confirmation signal;
The cascade data sending module produces the pulse-width signal of cascade, sends the next stage chip to;
Local display control module is used for from the data memory module sense data and exports the direct driving LED lamp point of data.Local display control module is that under the single-point pattern, local display control module takes out data in the middle of the same address of memory module from the logical order of data memory module sense data; Under the multiple spot pattern, local display control module will take out the demonstration desired data according to the order from far-end to near-end successively from data memory module, be shown as example with 16, local display control module will be according to the 16th point, the 15th point, the 14th point ... such order is taken out the demonstration data successively, and the direct driving LED lamp point of data is read and exported to local display control module from data memory module;
Data memory module, for the data behind local display control module received code, and storage;
Cascade data receiver module one end connects the cascade data sending module, and the other end connects local display module; Local display module one end connects data memory module, and the other end connects LED lamp point.
In conjunction with Fig. 4,5,6:
Described PCB circuit board is individual layer, and this signal controlling circuit 9 places between this positive source circuit 6 and this power cathode circuit 5 on the PCB circuit board.
When employed individual layer PCB width of circuit board is identical, utilize the transmission of single line transmission chip, can obtain accomplishing the wideest at same condition following positive source line width, signal controlling line width, power cathode line width.
At the current value one that requires positive source circuit, power cathode link tester to cross regularly, utilize the transmission of single line transmission chip, can accomplish the narrowest at following PCB circuit board of same condition.The PCB circuit board that draws like this is the narrowest, and the LED screen made from such lamp bar has more permeability.
When N was 2, this power cathode circuit 5 placed one deck of PCB circuit board on described PCB circuit board, and this positive source circuit 6 and this signal controlling circuit 9 place another layer of PCB circuit board.The width of described PCB circuit board depends on the width of positive source circuit 6 or the width of power cathode circuit 5.
When N more than or equal to 3 the time, described PCB circuit board, above a positive source circuit, a power cathode circuit and a signal control line path wiring method be that a positive source circuit 6, a power cathode circuit 5 and a signal controlling circuit 9 are positioned at separately on the layer circuit board respectively.
At the current value one that requires positive source circuit, power cathode link tester to cross regularly, utilize the transmission of single line transmission chip, can accomplish the narrowest at following PCB circuit board of same condition.The PCB circuit board that draws like this is the narrowest, and the LED screen made from such lamp bar has more permeability.
Claims (10)
1. one kind is used for the PCB lamp bar that LED shows, comprises some PCB circuit boards,
Each this PCB circuit board comprises:
Some LED luminescence units, this LED luminescence unit comprises at least one light emitting diode;
The LED single-wire transmission control chip, it is luminous to control this LED luminescence unit;
It is characterized in that this PCB circuit board also comprises:
A positive source circuit and a power cathode circuit are connected with this LED single-wire transmission control chip;
A signal controlling circuit, input control signal is to this LED single-wire transmission control chip, and is luminous to control this LED luminescence unit;
Whether described single-wire transmission control chip comprises: the cascade data receiver module receives the input data signal from system, and input data signal is extracted frequency information and data message, and effective by signal frequency and marker position confirmation signal;
The cascade data sending module produces the pulse-width signal of cascade, sends the next stage chip to;
Local display control module is used for from the data memory module sense data and exports the direct driving LED lamp point of data; Local display control module is that under the single-point pattern, local display control module takes out data in the middle of the same address of memory module from the logical order of data memory module sense data; Under the multiple spot pattern, local display control module will take out the demonstration desired data according to the order from far-end to near-end successively from data memory module;
Data memory module, for the data behind local display control module received code, and storage; Cascade data receiver module one end connects the cascade data sending module, and the other end connects local display module; Local display module one end connects data memory module, and the other end connects LED lamp point.
2. PCB lamp bar according to claim 1 is characterized in that, described PCB circuit board is the N layer, and wherein N is the integer more than or equal to 1.
3. PCB lamp bar according to claim 2 is characterized in that, this signal controlling circuit places between this positive source circuit and this power cathode circuit on the described PCB circuit board.
4. according to claim 2 or 3 described PCB lamp bars, it is characterized by when individual layer PCB width of circuit board is identical, the electric current maximum that pass through, according to the size of current computing formula, the power cathode line width that draws is the wideest; Spacing between positive source circuit, signal controlling circuit, the power cathode circuit is the narrowest.
5. PCB lamp bar according to claim 2, it is characterized in that, when N when equaling 2, a described positive source circuit places one deck of described PCB circuit board, a described power cathode circuit and a described signal controlling circuit place another layer of described PCB circuit board.
6. PCB lamp bar according to claim 5 is characterized in that, when N was 2, the width of described PCB circuit board was benchmark with positive source line width or power cathode line width.
7. PCB lamp bar according to claim 1, it is characterized in that, when N equals greater than 3 the time, a described positive source circuit, a described power cathode circuit and a described signal controlling circuit are positioned at separately respectively on the layer circuit board of described PCB circuit board.
8. PCB lamp bar according to claim 1, it is characterized in that, the MSIN pin of described single-wire transmission control chip is connected with signal controlling circuit input, the MSOUT pin is connected with signal controlling circuit output, VCC pin and positive source circuit join, be connected with resistance between single-wire transmission control chip pin and the light emitting diode, pin GND and power cathode circuit join.
9. the transmission control system that is used for the PCB lamp bar of LED demonstration, comprise master control PC, frame controller, scanning monitor and PCB lamp bar, the master control PC is connected with frame controller by transmission yarn, frame controller joins by transmission yarn and scanning monitor, it is characterized in that: described PCB lamp bar is the described PCB lamp of claim 1 bar, and described scanning monitor is connected by a signal controlling circuit with described PCB lamp bar;
The transmission control system of the described PCB lamp bar that shows for LED also comprises the error condition display unit, and when the signal error of input chip, described error condition display unit output error shows signal.
10. the transmission control system of the PCB lamp bar that shows for LED according to claim 9, it is characterized in that: described error condition display unit is the LED lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810102742XA CN101545591B (en) | 2008-03-26 | 2008-03-26 | PCB light bar used in LED display and transmission control system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810102742XA CN101545591B (en) | 2008-03-26 | 2008-03-26 | PCB light bar used in LED display and transmission control system thereof |
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| Publication Number | Publication Date |
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| CN101545591A CN101545591A (en) | 2009-09-30 |
| CN101545591B true CN101545591B (en) | 2013-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200810102742XA Expired - Fee Related CN101545591B (en) | 2008-03-26 | 2008-03-26 | PCB light bar used in LED display and transmission control system thereof |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102129838B (en) * | 2011-04-28 | 2013-01-23 | 深圳市天微电子有限公司 | LED (Light-Emitting Diode) display data processing method and device |
| CN102818157B (en) * | 2012-08-17 | 2016-05-11 | 深圳市中庆微科技开发有限公司 | A kind of LED lamp and LED module |
| CN104050929A (en) * | 2014-07-10 | 2014-09-17 | 广东威创视讯科技股份有限公司 | LED control device and LED display screen |
| CN104728763B (en) * | 2015-03-12 | 2016-08-17 | 周灵斌 | A kind of flashing light |
| CN109219196A (en) * | 2018-10-15 | 2019-01-15 | 深圳市睿智霞光电有限公司 | The LED light bar of the reverse-connection preventing circuit and application of dual input the serially concatenated circuit |
| CN109410828B (en) * | 2018-11-29 | 2020-12-08 | 宗仁科技(平潭)有限公司 | LED point light source driving method, system and controller |
| CN113129843A (en) * | 2019-12-31 | 2021-07-16 | Tcl集团股份有限公司 | Lamp panel, backlight control system and display device |
| CN112289253B (en) * | 2020-06-02 | 2022-02-11 | 深圳市杰理微电子科技有限公司 | Drive circuit of LED unit, LED unit and display screen |
| CN111489691A (en) * | 2020-06-02 | 2020-08-04 | 上海九山电子科技有限公司 | Display device |
| CN112399664A (en) * | 2020-10-13 | 2021-02-23 | 深圳市智岩科技有限公司 | Lamp area control circuit and lighting components |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2767819Y (en) * | 2005-01-31 | 2006-03-29 | 樊邦弘 | Soft tube lamp with mobile flicker effect |
| CN201000023Y (en) * | 2007-01-16 | 2008-01-02 | 钟再柏 | Flexible pipe lamp having flowing flicker effect |
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2008
- 2008-03-26 CN CN200810102742XA patent/CN101545591B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2767819Y (en) * | 2005-01-31 | 2006-03-29 | 樊邦弘 | Soft tube lamp with mobile flicker effect |
| CN201000023Y (en) * | 2007-01-16 | 2008-01-02 | 钟再柏 | Flexible pipe lamp having flowing flicker effect |
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| CN101545591A (en) | 2009-09-30 |
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