CN105047091A - LED display screen lamp bar - Google Patents
LED display screen lamp bar Download PDFInfo
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- CN105047091A CN105047091A CN201510460012.7A CN201510460012A CN105047091A CN 105047091 A CN105047091 A CN 105047091A CN 201510460012 A CN201510460012 A CN 201510460012A CN 105047091 A CN105047091 A CN 105047091A
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- lamp bar
- driving chip
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- input port
- led display
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Abstract
The invention discloses an LED display screen lamp bar, which comprises a lamp bar PCB plate, LED lamps, a driving chip, power source input ports, signal input ports and a smoothing circuit, wherein a plurality of LED lamps are uniformly arrayed on a front surface of the lamp bar PCB plate; the driving chip, the power source input ports, a power source output port and the smoothing circuit are set on a back surface of the lamp bar PCB plate; a circuit on the lamp bar PCB plate is uniformly divided into two parts and each part is provided with one power source input end and one signal input port; each of the power source input ports is located in the middle of each part of the circuit; and the two signal input ports are correspondingly connected to two output ports of an external controller. According to the invention, datum are transmitted with both ports, so the transmission speed is faster; the transmission distance is shortened; and data signals are avoided from being interfered; and the power source is divided into two parts for supplying power so as to avoid a display screen from color deviation phenomenon.
Description
Technical field
The invention belongs to LED display application, be specifically related to a kind of LED display lamp bar.
Background technology
In the high speed development process of current Modern Information based Society, large screen display is permeated from business application such as public information displays to consumer multimedia application.Along with the development of broadband network, digitized content of multimedia will occupy main flow in information world, and replacement conventional television is become the center that people enjoy information and content of multimedia by novel large-screen display equipment.
LED display (LEDpanel): LED is exactly lightemittingdiode, the english abbreviation of light emitting diode, is called for short LED.It is a kind of display mode by controlling semiconductor light-emitting-diode, and its general appearance is exactly be made up of a lot of individual normally red light emitting diode, and the light on and off by lamp show character.Be used for showing the display screen of the various information such as word, figure, image, animation, market, video, video signal.Shenzhen is LED display development & production origin.The manufacturer of current Shenzhen LED display reaches ten thousand, wherein auspicious by Ai Bisen, light, in the leading eldest child such as auspicious, follow-up also have Shenzhen unexpected rival's attitudes such as bright, extra large lamp, continent be bright to be for a long time shortlisted for top ten, and famous brand company price general charged is higher, and mainly handling cost is higher than general enterprises.Current LED display price is rather transparent.
LED display classification is varied, substantially classifies according to following several mode:
(1) be divided into by environment for use indoor, outdoor and semi-outdoor
Indoor panel long-pending generally from less than 1 square meter to tens square meters, dot density is higher, uses at non-direct sunlight or lighting environment, and viewing distance is beyond several meters, and screen body does not possess water-tight ability.
Outdoor-screen area is generally from a few square meter to dozens or even hundreds of square meter, dot density rarer (mostly being the every square meter of 1000-4000 point), luminosity at 3000-6000cd/ square meter (towards difference, brightness requirement is different), can use under direct sunlight condition, viewing distance is beyond tens meters, and screen body has good windproof anti-rain and lightning protection capability.
Semi-outdoor screen, between outdoor and between the two indoor, have higher luminosity, can use under non-direct sunlight open air, and screen body has certain sealing, generally under eaves or in show window.
The hard lamp bar of LED does assembling wiring board with PCB hardboard, and the useful paster LED of LED carries out assembling, and also useful straight cutting LED carries out assembling, optionally different and adopt different elements.The advantage of hard lamp bar is fixed than being easier to, and processes and install all more convenient; Shortcoming arbitrarily to bend, and is not suitable for irregular place.Hard lamp bar paster LED have the good plurality of specifications such as 18 LEDs, 24 LEDs, 30 LEDs, 36 LEDs, 40 LEDs; Have the different sizes such as 18,24,36,48 with straight cutting LED, what have front also has side, lateral emitting be Wall-shaped lamp strip again.
The data transmission of LED lamp bar is general adopts a signal input port to control whole LED lamp bar, such transmission mode, and when the length of LED lamp bar is very long time, data transmission is easily disturbed, and transmission speed is slower.
Summary of the invention
Technical matters to be solved by this invention is: provide a kind of LED display lamp bar, solves the reportedly slowly defeated and problem be easily disturbed of LED display lamp number in prior art.
The present invention is for solving the problems of the technologies described above by the following technical solutions:
A kind of LED display lamp bar, comprise lamp bar pcb board, LED, driving chip, power input port, signal input port, filtering circuit, multiple LED of the front uniform array of described lamp bar pcb board, the back side of described lamp bar PCB arranges driving chip, power input port, output port of power source, filtering circuit, described power input port and signal input port include two, circuit on lamp bar pcb board is evenly divided into two parts, every part arranges a power input port, a signal input port, wherein, power input port is positioned at the centre of every partial circuit, two signal input ports are corresponding with two output ports of peripheral control unit to be connected.
Described filtering circuit comprises electric source filter circuit and signal filter circuit, wherein, electric source filter circuit comprises the different electric capacity of at least three capacitances, signal filter circuit comprises magnetic bead, the input end of each control signal is all connected a magnetic bead, data input pin and the data output end of each group driving chip are respectively connected a magnetic bead, the constant current driving pin of described each driving chip and a fixed value resistance and the adjustable resistance of connecting between signal ground.
The capacitance of described three electric capacity is respectively 10uF, 0.1uF, 0.001uF.
Described driving chip comprises three kinds, is respectively red LED lamp driving chip, green LED lamp driving chip, blue led lamp driving chip, and described red, green, blue look LED driving chip is sequentially connected in series.
Described driving chip is MBI5024 or MBI5167 that scientific & technical corporation is built up in Taiwan.
Compared with prior art, the present invention has following beneficial effect:
1, data two ends transmission, the speed transmitted is accelerated, and shorten transmission range, avoid data-signal to be disturbed, power supply is divided into two parts to power, and avoids display screen to have colour cast phenomenon.
2, three grades of capacitance filtering are adopted, can the interference of effective each frequency range of filtering, adopt magnetic bead to be connected in series to signal input output end, can effectively filtering crosstalk, the integrality of guarantee signal.
3, MBI5024 chip is that a performance that accumulation science and technology in Taiwan controls to release for LED display is specially high, the chip that cost is low, and the LED display control for the type can realize its display demand, reduces the cost of whole screen simultaneously.
Accompanying drawing explanation
Fig. 1 is LED lamp strip structure block diagram of the present invention.
Wherein, being designated in figure: 1-lamp bar pcb board; 2-first signal input port; 3-first power input port; 4-secondary signal input port; 5-second source input port.
Embodiment
Below in conjunction with accompanying drawing, structure of the present invention and the course of work are described further.
As shown in Figure 1, a kind of LED display lamp bar, comprise lamp bar pcb board, LED, driving chip, power input port, signal input port, filtering circuit, multiple LED of the front uniform array of described lamp bar pcb board, the back side of described lamp bar PCB arranges driving chip, power input port, output port of power source, filtering circuit, described power input port and signal input port include two, circuit on lamp bar pcb board is evenly divided into two parts, every part arranges a power input port, a signal input port, wherein, power input port is positioned at the centre of every partial circuit, two signal input ports are corresponding with two output ports of peripheral control unit to be connected.
Described two power input port are respectively the first power input port 3, second source input port 5, two signal input ports are respectively the first signal input port 2, secondary signal input port 4, back side left end on described lamp bar pcb board 1 arranges the first signal input port 2 and the first power input port 3, and right-hand member arranges secondary signal input port 4 and second source input port 5.
Described filtering circuit comprises electric source filter circuit and signal filter circuit, wherein, electric source filter circuit comprises the different electric capacity of at least three capacitances, signal filter circuit comprises magnetic bead, the input end of each control signal is all connected a magnetic bead, data input pin and the data output end of each group driving chip are respectively connected a magnetic bead, the constant current driving pin of described each driving chip and a fixed value resistance and the adjustable resistance of connecting between signal ground.
The capacitance of described three electric capacity is respectively 10uF, 0.1uF, 0.001uF.
Described driving chip comprises three kinds, is respectively red LED lamp driving chip, green LED lamp driving chip, blue led lamp driving chip, and described red, green, blue look LED driving chip is sequentially connected in series.
Described driving chip is MBI5024 or MBI5167 that scientific & technical corporation is built up in Taiwan.
MBI5024 chip has following features:
MBI5024 utilizes up-to-date PrecisionDrive technology, and aim at the drive IC of LED display panel design, the CMOS bit shift register that it is built-in and bolt-lock function, can convert the input data of serial to parallel output data formats.
The input voltage range value of MBI5024 is 3.3 volts to 5 volts, provides 16 current sources, 3-45mA can be provided to determine the magnitude of current with driving LED in each output stage; And in single IC the current difference of output channel be less than ± 3%; Output current difference between many IC is less than ± and 6%; Electric current, along with output terminal withstand voltage (VDS) change, is controlled in every volt 0.1%; And electric current is subject to service voltage (VDD), the change of environment temperature is also controlled in 1%.User can via selecting the RSET of different resistance to adjust the size of current of each output stage of MBI5024, by this mechanism, and user can the luminosity of accurately control LED.
The design of MBI5024 ensures that its output stage can be withstand voltage 17 volts, therefore can be connected in series multiple LED at each output terminal.
In addition, MBI5024 also provides the high clock frequency of 25MHz to meet system to the demand in mass data transmission.
Control element in LED display adopts MBI5024 control chip, MBI5024 chip is that a performance that accumulation science and technology in Taiwan controls to release for LED display is specially high, the chip that cost is low, LED display for the type controls to realize its display demand, reduces the cost of whole screen simultaneously.
The pin of MBI5024 is described as follows table:
This chip main lift display screen uniformity coefficient of MBI5024, and tolerate that larger LED luminance difference is to reduce manufacturing cost, simultaneously because current accuracy improves, larger LED luminance error can be tolerated, contribute to manufacturer and reduce LED purchase cost.
Claims (5)
1. a LED display lamp bar, comprise lamp bar pcb board, LED, driving chip, power input port, signal input port, filtering circuit, multiple LED of the front uniform array of described lamp bar pcb board, the back side of described lamp bar PCB arranges driving chip, power input port, output port of power source, filtering circuit, it is characterized in that: described power input port and signal input port include two, circuit on lamp bar pcb board is evenly divided into two parts, every part arranges a power input port, a signal input port, wherein, power input port is positioned at the centre of every partial circuit, two signal input ports are corresponding with two output ports of peripheral control unit to be connected.
2. LED display lamp bar according to claim 1, it is characterized in that: described filtering circuit comprises electric source filter circuit and signal filter circuit, wherein, electric source filter circuit comprises the different electric capacity of at least three capacitances, signal filter circuit comprises magnetic bead, the input end of each control signal is all connected a magnetic bead, data input pin and the data output end of each group driving chip are respectively connected a magnetic bead, the constant current driving pin of described each driving chip and a fixed value resistance and the adjustable resistance of connecting between signal ground.
3. LED display lamp bar according to claim 2, is characterized in that: the capacitance of described three electric capacity is respectively 10uF, 0.1uF, 0.001uF.
4. LED display lamp bar according to claim 1, it is characterized in that: described driving chip comprises three kinds, be respectively red LED lamp driving chip, green LED lamp driving chip, blue led lamp driving chip, described red, green, blue look LED driving chip is sequentially connected in series.
5. LED display lamp bar according to any one of claim 1 to 4, is characterized in that: described driving chip is MBI5024 or MBI5167 that scientific & technical corporation is built up in Taiwan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510460012.7A CN105047091A (en) | 2015-07-31 | 2015-07-31 | LED display screen lamp bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510460012.7A CN105047091A (en) | 2015-07-31 | 2015-07-31 | LED display screen lamp bar |
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| CN105047091A true CN105047091A (en) | 2015-11-11 |
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| CN201510460012.7A Pending CN105047091A (en) | 2015-07-31 | 2015-07-31 | LED display screen lamp bar |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105845044A (en) * | 2016-05-30 | 2016-08-10 | 无锡昊瑜节能环保设备有限公司 | Environment-friendly LED (Light Emitting Diode) panel |
| CN106683577A (en) * | 2016-11-21 | 2017-05-17 | 深圳市洲明科技股份有限公司 | Lamp strip and super-long lamp strip screen |
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| JPH08317414A (en) * | 1995-05-18 | 1996-11-29 | Toshiba Corp | Led display device |
| KR100769106B1 (en) * | 2006-09-08 | 2007-10-22 | (주)에니원 | Led screen driver for block scan display |
| CN201116671Y (en) * | 2007-11-20 | 2008-09-17 | 赖政章 | Intelligent type LED full-color lamp group and decoration lamp string composed of the same |
| CN101392878A (en) * | 2008-10-15 | 2009-03-25 | 北京中庆微数字设备开发有限公司 | LED lamp strip and LED screen |
| CN201251139Y (en) * | 2008-04-22 | 2009-06-03 | 北京中庆微数字设备开发有限公司 | PCB light strip in LED display and transmission control system thereof |
| CN202422683U (en) * | 2011-12-13 | 2012-09-05 | 深圳市艾比森光电股份有限公司 | Drive circuit for cell board of LED (Light Emitting Diode) display screen |
| CN103646617A (en) * | 2013-11-25 | 2014-03-19 | 无锡莱吉特信息科技有限公司 | Color-cast-proof LED (light emitting diode) display screen |
| CN104347034A (en) * | 2014-11-20 | 2015-02-11 | 无锡科思电子科技有限公司 | Double-power LED (light-emitting diode) display screen drive circuit |
| CN104347033A (en) * | 2014-11-20 | 2015-02-11 | 无锡科思电子科技有限公司 | LED (Light-Emitting Diode) display screen driving circuit |
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2015
- 2015-07-31 CN CN201510460012.7A patent/CN105047091A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08317414A (en) * | 1995-05-18 | 1996-11-29 | Toshiba Corp | Led display device |
| KR100769106B1 (en) * | 2006-09-08 | 2007-10-22 | (주)에니원 | Led screen driver for block scan display |
| CN201116671Y (en) * | 2007-11-20 | 2008-09-17 | 赖政章 | Intelligent type LED full-color lamp group and decoration lamp string composed of the same |
| CN201251139Y (en) * | 2008-04-22 | 2009-06-03 | 北京中庆微数字设备开发有限公司 | PCB light strip in LED display and transmission control system thereof |
| CN101392878A (en) * | 2008-10-15 | 2009-03-25 | 北京中庆微数字设备开发有限公司 | LED lamp strip and LED screen |
| CN202422683U (en) * | 2011-12-13 | 2012-09-05 | 深圳市艾比森光电股份有限公司 | Drive circuit for cell board of LED (Light Emitting Diode) display screen |
| CN103646617A (en) * | 2013-11-25 | 2014-03-19 | 无锡莱吉特信息科技有限公司 | Color-cast-proof LED (light emitting diode) display screen |
| CN104347034A (en) * | 2014-11-20 | 2015-02-11 | 无锡科思电子科技有限公司 | Double-power LED (light-emitting diode) display screen drive circuit |
| CN104347033A (en) * | 2014-11-20 | 2015-02-11 | 无锡科思电子科技有限公司 | LED (Light-Emitting Diode) display screen driving circuit |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105845044A (en) * | 2016-05-30 | 2016-08-10 | 无锡昊瑜节能环保设备有限公司 | Environment-friendly LED (Light Emitting Diode) panel |
| CN106683577A (en) * | 2016-11-21 | 2017-05-17 | 深圳市洲明科技股份有限公司 | Lamp strip and super-long lamp strip screen |
| CN106683577B (en) * | 2016-11-21 | 2021-11-16 | 深圳市洲明科技股份有限公司 | Lamp strip and overlength lamp strip screen |
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Application publication date: 20151111 |