CN204204382U - A kind of multicolored LED array module - Google Patents

Abstract

The utility model discloses a kind of multicolored LED array module, it is made up of several multicolored LED unit; Be provided with in described multicolored LED unit: N1 red LED lamp pearl, a N2 blue led lamp pearl, a N3 yellow LED lamp pearl, a N4 green LED lamp pearl and N5 white led lamps pearl; Wherein, N1 >=1, N2 >=1, N3 >=1, N4 >=1, N5 >=1.The utility model has can make display driving system overall power little, good stability, and can adapt to the advantage showing the large pattern of area and Charactes Display.

Description

A kind of multicolored LED array module

Technical field

The utility model relates to a kind of LED array module, and specifically a kind of LED array module being conducive to reduction LED array drive circuit power consumption, belongs to electronic technology field.

Background technology

LED display is the plane formula display screen utilizing LED lattice module or pixel cell composition.Because it has the advantages such as bright in luster, brightness is high, the life-span is long, working stability is reliable, be obtained in many industries and apply widely, as AT STATION, LED display is used for Information issued by harbour, market, the public place such as bank.Usual LED display can be combined into by 8 × 8LED dot matrix.

8 × 8LED dot matrix of the prior art has following inner structure usually: 64 light emitting diodes are 8 row, 8 column distribution arrangements, 8 × 8LED dot matrix has 8 and drives line and 8 driving alignments, concrete, the anode of all 8 light emitting diodes of every a line links together and forms the driving line of this row, the negative electrode of all 8 light emitting diodes of each row links together and forms the column drive wire of these row, therefore each 8 × 8LED dot matrix has 16 external pins, scan round mode must be adopted when designing display drive control system, detailed process is: use line scan signals to choose every a line light emitting diode (as: line input drive signal 10000000 successively, choose the first row, line of input drive singal 00000001, choose eighth row), synchronous, low level is sent to the light emitting diode column needing according to display pattern to light, the light emitting diode lighted then is needed to be lit.

In above process, as shown in Figure 2,8 row drive wires and 8 column drive wires (display screen that a large amount of 8 × 8LED dot matrix is spliced to form has more row drive wire and column drive wire) all need main control chip to send drive singal to it, and often can adopt a large amount of driving chip to save main control chip (the AT89C51 singlechip chip as common) port resource, common horizontal drive circuit adopts 74138 chip cascades to form, and column drive circuit is then formed by 74595 chip cascades.

For colorful display screen, 8 × 8LED dot matrix that it adopts, structure is similar with monochromatic 8 × 8LED dot matrix, on each array point position, but all there is the LED of different colours, anode with LED all in a line links together, form a line, on same row, the negative electrode of the LED of same color links together formation alignment, and the such as one piece of five colors 8 × 8LED dot matrix is equivalent to 5 pieces of monochrome 8 × 8LED dot matrix and overlaps.Therefore color line screen (for the five colors) is driven, if when needing to carry out colour display, then the one piece of five colors 8 × 8LED dot matrix just needs 8 line scanning drive singal ports, and the necessary constantly circulation of these 8 line scan signals ports exports sweep signal (because the necessary constantly multiple scanning of line scan signals, guarantee eye-observation is to stable display frame), like this horizontal drive circuit just necessary non-stop run, this must cause horizontal drive circuit power consumption large, generation heat is many, is unfavorable for system stability.

In addition, in prior art, the display area of one, 8 × 8LED dot matrix display point is restricted, when needing the larger pattern of display, (such as the large large ocra font ocr of display area) can only adopt 8 × 8LED dot matrix of larger quantity to splice, this inevitable complexity and system power dissipation strengthening hardware circuit wiring further.

In sum, when 8 × 8LED dot matrix used in the prior art (particularly colored 8 × 8LED dot matrix) realizes showing the larger multicolour pattern display of particularly area, there is following defect: (1) must use horizontal drive circuit to carry out scan round driving to line, which results in horizontal drive circuit operating power consumption large, generation heat is many, display driving system overall power is large, poor stability.(2) the large-scale pattern that inadaptable display area is large and Charactes Display, the display screen of traffic information on such as highway.

Utility model content

For prior art above shortcomings, the purpose of this utility model is: how to provide a kind of display driving system overall power little, good stability, and can adapt to the multicolored LED array module showing the large pattern of area and Charactes Display.

To achieve these goals, the utility model have employed following technical scheme.

A kind of multicolored LED array module, is characterized in that: it is made up of several multicolored LED unit;

Be provided with in described multicolored LED unit: N1 red LED lamp pearl, a N2 blue led lamp pearl, a N3 yellow LED lamp pearl, a N4 green LED lamp pearl and N5 white led lamps pearl;

The negative electrode of the 1st red LED lamp pearl in described N1 red LED lamp pearl is connected with the anode of the 2nd red LED lamp pearl, the negative electrode of the 2nd red LED lamp pearl is connected with the anode of the 3rd red LED lamp pearl, by that analogy, until the negative electrode of N1-1 red LED lamp pearl is connected with the anode of N1 red LED lamp pearl; The anode of described 1st red LED lamp pearl is the public termination RCOM of red light branch road of described multicolored LED unit; The negative electrode of described N1 red LED lamp pearl is the red light branch data termination RD of described multicolored LED unit;

The negative electrode of the 1st blue led lamp pearl in described N2 blue led lamp pearl is connected with the anode of the 2nd blue led lamp pearl, the negative electrode of the 2nd blue led lamp pearl is connected with the anode of the 3rd blue led lamp pearl, by that analogy, until the negative electrode of N2-1 blue led lamp pearl is connected with the anode of N2 blue led lamp pearl; The anode of described 1st blue led lamp pearl is the public termination BCOM of blue lamp branch road of described multicolored LED unit; The negative electrode of described N2 blue led lamp pearl is the blue lamp branch data termination BD of described multicolored LED unit;

The negative electrode of the 1st yellow LED lamp pearl in described N3 yellow LED lamp pearl is connected with the anode of the 2nd yellow LED lamp pearl, the negative electrode of the 2nd yellow LED lamp pearl is connected with the anode of the 3rd yellow LED lamp pearl, until the negative electrode of N3-1 yellow LED lamp pearl is connected with the anode of N3 look LED lamp bead; The anode of described 1st yellow LED lamp pearl is the public termination YCOM of amber light branch road of described multicolored LED unit; The negative electrode of described N3 yellow LED lamp pearl is the amber light branch data termination YD of described multicolored LED unit;

The negative electrode of the 1st green LED lamp pearl in described N4 green LED lamp pearl is connected with the anode of the 2nd green LED lamp pearl, the negative electrode of the 2nd green LED lamp pearl is connected with the anode of the 3rd green LED lamp pearl, until the negative electrode of N4-1 green LED lamp pearl is connected with the anode of N4 green LED lamp pearl; The anode of described 1st green LED lamp pearl is the public termination GCOM of green light branch road of described multicolored LED unit; The negative electrode of described N4 green LED lamp pearl is the green light branch data termination GD of described multicolored LED unit;

The negative electrode of the 1st white led lamps pearl in described N5 white led lamps pearl is connected with the anode of the 2nd white led lamps pearl, the negative electrode of the 2nd white led lamps pearl is connected with the anode of the 3rd white led lamps pearl, until the negative electrode of N5-1 white led lamps pearl is connected with the anode of N5 white led lamps pearl; The anode of described 1st white led lamps pearl is the public termination WCOM of white lamp branch road of described multicolored LED unit; The negative electrode of described N5 white led lamps pearl is the white lamp branch data termination WD of described multicolored LED unit;

Described red light branch road public termination RCOM, blue lamp branch road public termination BCOM, amber light branch road public termination YCOM, green light branch road public termination GCOM and white lamp branch road public termination WCOM link together and form total public termination COMA.

Further, described N1 >=1, described N2 >=1, described N3 >=1, described N4 >=1, described N5 >=1.

Compared to existing technology, the utility model tool has the following advantages:

The public termination RCOM of the utility model red light branch road, the public termination BCOM of blue lamp branch road, the public termination YCOM of amber light branch road, green light branch road public termination GCOM and the public termination WCOM of white lamp branch road links together structure, total public termination COMA, when carrying out using the utility model showing the large large-scale pattern of area and Charactes Display, total public termination COMA is connected with positive source VCC, red light branch data termination RD, blue lamp branch data termination BD, amber light branch data termination YD, green light branch data termination GD is connected with driving circuit signal output port with white lamp branch data termination WD, horizontal drive circuit need not be re-used scan round driving is carried out to line, the peripheral components of non-stop run is not had in whole display control program, main control chip also saves internal resource, therefore compared to existing technology in the one piece of five colors 8 × 8LED dot matrix just need 8 line scanning drive singal ports, and these 8 line scan signals ports constantly must circulate and export sweep signal and observe with underwriter the situation observing stable display frame and compare, it is low in energy consumption that the utility model has corresponding display control program, the advantage that stability is high, in addition the LED quantity on the utility model every bar display branch road can suitably be expanded, but do not increase drive singal expansion, therefore compared to existing technology in × one, 8LED dot matrix display point display area restricted, 8 × 8LED dot matrix of larger quantity can only be adopted to carry out the situation of splicing when needing the larger pattern of display, the simultaneous adaptation that the utility model has does not increase drive singal quantity shows the application demand of the large large-scale pattern of area and Charactes Display.

Accompanying drawing explanation

Fig. 1 is circuit structure diagram of the present utility model;

Fig. 2 is that common LED drives display system theory diagram;

Fig. 3 drives display system theory diagram for driving LED of the present utility model

Embodiment

Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.

As shown in Figure 1, a kind of multicolored LED array module, it is made up of several multicolored LED unit;

Be provided with in each multicolored LED unit: N1 red LED lamp pearl, a N2 blue led lamp pearl, a N3 yellow LED lamp pearl, a N4 green LED lamp pearl and N5 white led lamps pearl;

The negative electrode of the 1st red LED lamp pearl in N1 red LED lamp pearl is connected with the anode of the 2nd red LED lamp pearl, the negative electrode of the 2nd red LED lamp pearl is connected with the anode of the 3rd red LED lamp pearl, by that analogy, until the negative electrode of N1-1 red LED lamp pearl is connected with the anode of N1 red LED lamp pearl;

That is to say that N1 red LED lamp pearl anode and cathode is interconnected to be cascaded, finally obtain two terminations;

The anode of the 1st red LED lamp pearl is the public termination RCOM of red light branch road of described multicolored LED unit;

The negative electrode of N1 red LED lamp pearl is the red light branch data termination RD of described multicolored LED unit;

The negative electrode of the 1st blue led lamp pearl in N2 blue led lamp pearl is connected with the anode of the 2nd blue led lamp pearl, the negative electrode of the 2nd blue led lamp pearl is connected with the anode of the 3rd blue led lamp pearl, by that analogy, until the negative electrode of N2-1 blue led lamp pearl is connected with the anode of N2 blue led lamp pearl;

That is to say that N2 blue led lamp pearl anode and cathode is interconnected to be cascaded, finally obtain two terminations;

The anode of described 1st blue led lamp pearl is the public termination BCOM of blue lamp branch road of described multicolored LED unit; The negative electrode of described N2 blue led lamp pearl is the blue lamp branch data termination BD of described multicolored LED unit;

The negative electrode of the 1st yellow LED lamp pearl in N3 yellow LED lamp pearl is connected with the anode of the 2nd yellow LED lamp pearl, the negative electrode of the 2nd yellow LED lamp pearl is connected with the anode of the 3rd yellow LED lamp pearl, until the negative electrode of N3-1 yellow LED lamp pearl is connected with the anode of N3 look LED lamp bead;

That is to say that N3 yellow LED lamp pearl anode and cathode is interconnected to be cascaded, finally obtain two terminations;

The anode of the 1st yellow LED lamp pearl is the public termination YCOM of amber light branch road of described multicolored LED unit; The negative electrode of N3 yellow LED lamp pearl is the amber light branch data termination YD of described multicolored LED unit;

The negative electrode of the 1st green LED lamp pearl in N4 green LED lamp pearl is connected with the anode of the 2nd green LED lamp pearl, the negative electrode of the 2nd green LED lamp pearl is connected with the anode of the 3rd green LED lamp pearl, until the negative electrode of N4-1 green LED lamp pearl is connected with the anode of N4 green LED lamp pearl;

That is to say that N4 green LED lamp pearl anode and cathode is interconnected to be cascaded, finally obtain two terminations;

The anode of the 1st green LED lamp pearl is the public termination GCOM of green light branch road of described multicolored LED unit; The negative electrode of described N4 green LED lamp pearl is the green light branch data termination GD of described multicolored LED unit;

The negative electrode of the 1st white led lamps pearl in N5 white led lamps pearl is connected with the anode of the 2nd white led lamps pearl, the negative electrode of the 2nd white led lamps pearl is connected with the anode of the 3rd white led lamps pearl, until the negative electrode of N5-1 white led lamps pearl is connected with the anode of N5 white led lamps pearl;

That is to say that N5 white led lamps pearl anode and cathode is interconnected to be cascaded, finally obtain two terminations;

The anode of the 1st white led lamps pearl is the public termination WCOM of white lamp branch road of described multicolored LED unit; The negative electrode of described N5 white led lamps pearl is the white lamp branch data termination WD of described multicolored LED unit;

Described red light branch road public termination RCOM, blue lamp branch road public termination BCOM, amber light branch road public termination YCOM, green light branch road public termination GCOM and white lamp branch road public termination WCOM link together and form total public termination COMA.

Wherein, N1 >=1, described N2 >=1, described N3 >=1, described N4 >=1, described N5 >=1.Such as shown in Figure 1, the equal value of N1, N2, N3, N4 is 2, N5 value is 1, the LED of five kinds of colors can be arranged in certain shape according to reality need, such as in FIG, two redness, yellow and green LED lamp bead are all arranged in a line of respective level, and two blue LED lamp bead are arranged in vertical direction, and a white led lamps pearl is arranged on the centre of other lamp pearls.

The value of N1, N2, N3, N4 and N5 can be no more than 8 usually.

Certain all multicolored LED unit need to be arranged on (a multicolored LED unit occupies an array display point) on the circuit substrate of multicolored LED array module according to array layout, and realizing foregoing circuit annexation by the connecting line on circuit substrate, the connecting line on circuit substrate can be realized by techniques such as etchings.

Using method of the present utility model is as follows:

In five colors LED array module, the public termination COMA of all multicolored LED unit is all connected with the positive pole VCC of power supply, monochromatic burner branch data termination (comprising RD, WD, YD, BD and WD) homogeneous drive singal of each multicolored LED unit is connected, and concrete can adopt following display driving system:

Display driving system comprises main control chip (can adopt singlechip chip) and LED drive module:

LED drive module comprises the first driver element, the second driver element, the 3rd driver element, four-wheel drive unit and the 5th driver element;

The serial data input of the first driver element is connected with the delivery outlet of single-chip microcomputer; The red light branch road termination RD of each parallel data output terminal of the first driver element LED unit multicolored with each is respectively mutually corresponding to be connected;

The serial data input of the second driver element is connected with the delivery outlet of single-chip microcomputer; The blue lamp branch road termination BD of each parallel data output terminal of the second driver element LED unit multicolored with each is respectively mutually corresponding to be connected;

The serial data input of the 3rd driver element is connected with the delivery outlet of single-chip microcomputer; The amber light branch road termination YD of each parallel data output terminal of the 3rd driver element LED unit multicolored with each is respectively mutually corresponding to be connected;

The serial data input of four-wheel drive unit is connected with the delivery outlet of single-chip microcomputer; The green light branch road termination GD of each parallel data output terminal of the 3rd driver element LED unit multicolored with each is respectively mutually corresponding to be connected;

Wherein the first to the 5th driver element is serial input-parallel and exports driver module, and therefore single-chip microcomputer only needs five delivery outlets can control multicolored LED display (multicolored LED array module).The concrete MBI5026CF chip that can adopt realizes the first to the 5th driver element (the first to the 5th driver element internal circuit configuration is identical).

MBI5026CF chip is a similar 74595 seals in and go out (1 road serial input passage, 1 road serial output channel, 16 road parallel output passages) LED drive chip, its principal feature is: (1) has 16 road constant current output passages; (2) output current can be adjusted by the resistance that its R_EXT pin connects (output current 5-90mA); (3) it also has an output enable end OE, and Enable Pin turns off then inner output driver and turns off, and output current cannot export;

As shown in Figure 3, when the quantity of multicolored LED unit is more than 16, MBI5026CF chip can be carried out cascade with external drive port, particularly the serial input mouth of spoken for the Serial output of first piece of MBI5026CF chip second piece of MBI5026CF chip is connected, so just output channel can be expanded to 32 passages, single-chip microcomputer is sent in a serial fashion by needing the data being used for showing from the output port of one position, and the output that can walk abreast in above-mentioned 32 output channels is for driving corresponding LED.

If 32 parallel channels still can not satisfy the demands and can also increase MBI5026CF chip further and expand.

In multicolored LED array module, the drive singal of any one LED is all sent in a serial fashion by single-chip microcomputer in above process, then send to drive corresponding LED after the first to the 5th driver element transfers parallel data to, and do not need to carry out again circulation line scanning, this obviously reduces system power dissipation, save single-chip microcomputer in house software resource, and if not containing certain color in current display frame, so corresponding five driver elements are then without output driving current, and this just reduce further system power dissipation;

If when needing large-scale picture or the character showing larger area, the numerical value that suitably can adjust N1, N2, N3, N4 and N5 makes the indication range of single array point in array larger, character is naturally more thick, to be more convenient for distant surveillance, and because in each lampet branch road (as red light branch road), all lampets are cascaded, although therefore the indication range of display point increases, can not increase drive singal quantity, this is also conducive to saving hardware resource.

Finally illustrate, above embodiment is only in order to illustrate technical side of the present utility model.Case and unrestricted, although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of right of the present utility model.

Claims (2)

1. a multicolored LED array module, is characterized in that: it is made up of several multicolored LED unit;

Be provided with in described multicolored LED unit: N1 red LED lamp pearl, a N2 blue led lamp pearl, a N3 yellow LED lamp pearl, a N4 green LED lamp pearl and N5 white led lamps pearl;

The negative electrode of the 1st red LED lamp pearl in described N1 red LED lamp pearl is connected with the anode of the 2nd red LED lamp pearl, the negative electrode of the 2nd red LED lamp pearl is connected with the anode of the 3rd red LED lamp pearl, by that analogy, until the negative electrode of N1-1 red LED lamp pearl is connected with the anode of N1 red LED lamp pearl; The anode of described 1st red LED lamp pearl is the public termination RCOM of red light branch road of described multicolored LED unit; The negative electrode of described N1 red LED lamp pearl is the red light branch data termination RD of described multicolored LED unit;

The negative electrode of the 1st blue led lamp pearl in described N2 blue led lamp pearl is connected with the anode of the 2nd blue led lamp pearl, the negative electrode of the 2nd blue led lamp pearl is connected with the anode of the 3rd blue led lamp pearl, by that analogy, until the negative electrode of N2-1 blue led lamp pearl is connected with the anode of N2 blue led lamp pearl; The anode of described 1st blue led lamp pearl is the public termination BCOM of blue lamp branch road of described multicolored LED unit; The negative electrode of described N2 blue led lamp pearl is the blue lamp branch data termination BD of described multicolored LED unit;

The negative electrode of the 1st yellow LED lamp pearl in described N3 yellow LED lamp pearl is connected with the anode of the 2nd yellow LED lamp pearl, the negative electrode of the 2nd yellow LED lamp pearl is connected with the anode of the 3rd yellow LED lamp pearl, until the negative electrode of N3-1 yellow LED lamp pearl is connected with the anode of N3 look LED lamp bead; The anode of described 1st yellow LED lamp pearl is the public termination YCOM of amber light branch road of described multicolored LED unit; The negative electrode of described N3 yellow LED lamp pearl is the amber light branch data termination YD of described multicolored LED unit;

The negative electrode of the 1st green LED lamp pearl in described N4 green LED lamp pearl is connected with the anode of the 2nd green LED lamp pearl, the negative electrode of the 2nd green LED lamp pearl is connected with the anode of the 3rd green LED lamp pearl, until the negative electrode of N4-1 green LED lamp pearl is connected with the anode of N4 green LED lamp pearl; The anode of described 1st green LED lamp pearl is the public termination GCOM of green light branch road of described multicolored LED unit; The negative electrode of described N4 green LED lamp pearl is the green light branch data termination GD of described multicolored LED unit;

The negative electrode of the 1st white led lamps pearl in described N5 white led lamps pearl is connected with the anode of the 2nd white led lamps pearl, the negative electrode of the 2nd white led lamps pearl is connected with the anode of the 3rd white led lamps pearl, until the negative electrode of N5-1 white led lamps pearl is connected with the anode of N5 white led lamps pearl; The anode of described 1st white led lamps pearl is the public termination WCOM of white lamp branch road of described multicolored LED unit; The negative electrode of described N5 white led lamps pearl is the white lamp branch data termination WD of described multicolored LED unit;

Described red light branch road public termination RCOM, blue lamp branch road public termination BCOM, amber light branch road public termination YCOM, green light branch road public termination GCOM and white lamp branch road public termination WCOM link together and form total public termination COMA.

2. one according to claim 1 multicolored LED array module, is characterized in that: described N1 >=1, described N2 >=1, described N3 >=1, described N4 >=1, described N5 >=1.