CN106304526A - LED light emission device and relevant drive circuit - Google Patents
LED light emission device and relevant drive circuit Download PDFInfo
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- CN106304526A CN106304526A CN201510298882.9A CN201510298882A CN106304526A CN 106304526 A CN106304526 A CN 106304526A CN 201510298882 A CN201510298882 A CN 201510298882A CN 106304526 A CN106304526 A CN 106304526A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Abstract
The present invention proposes a kind of LED light emission device and relevant drive circuit, and this drive circuit includes: a signal pins；One decision circuitry, for judging the size of an input signal；One indication signal produces circuit, for exporting an indication signal to this signal pins according to the judged result of this decision circuitry；One alignment signal generating circuit, for when the predetermined edge by the signal in this signal pins triggers, producing an aligned signal；One indication signal circuit for detecting, for detecting the signal in this signal pins to produce a detection signal；And one control signal produce circuit, for when being triggered by this aligned signal, produce multiple control signals according to this detection signal, with multiple switch elements that control is in parallel with multiple LED matrix respectively.Aforesaid drive circuit can effectively promote the luminous efficacy of LED light emission device and overall energy use efficiency.
Description
Technical field
The relevant LED light emission device of the present invention, a kind of luminous efficacy promoting LED light emission device
Drive circuit and relevant LED light emission device.
Background technology
In order to promote luminous power, some LED light emission device can use the framework that multiple drive circuit is in parallel
Drive respectively and organize LED array more.Ideally, multiple drive circuits in parallel should synchronize to be controlled
The switching of signal, the luminous power of the LED light emission device that could maximize.
But, drive circuit has process variation (process variation) the most unavoidably and exists, and not
The running of same drive circuit is carried out independently of one another.Therefore, in traditional LED light emission device,
Multiple drive circuits in parallel tend not to be controlled the switching of signal simultaneously, thus reduce LED and send out
The luminous power of electro-optical device.Consequently, it is possible to the overall energy not only reducing LED light emission device uses effect
Rate, also can produce more unnecessary used heat.
Summary of the invention
In view of this, the most effectively promoting the luminous efficacy of LED light emission device, actually industry has to be solved
Problem.
The present invention provides the embodiment of a kind of LED light emission device, and it comprises: a commutator, is arranged to depend on
A rectified signal is produced according to an AC signal；One first LED array, is coupled to this rectified signal, and bag
Multiple LED matrix containing series connection；One first switch arrays, are coupled to this rectified signal, and comprise series connection
Multiple switch elements and multiple nodes of being positioned on the current path of these the first switch arrays, wherein,
The plurality of node of these the first switch arrays is respectively coupled to the plurality of LED dress of this first LED array
Put so that the plurality of switch element of these the first switch arrays is parallel to being somebody's turn to do of this first LED array respectively
Multiple LED matrix；One first drive circuit, includes: one first signal pins；One decision circuitry,
It is arranged to judge the size of an input signal；One indication signal produce circuit, be coupled to this decision circuitry with
This first signal pins, be arranged to export according to the judged result of this decision circuitry an indication signal to this
One signal pins；One alignment signal generating circuit, is coupled to this first signal pins, is arranged in and is subject to
When one predetermined edge of the signal in this first signal pins triggers, produce an aligned signal；One instruction letter
Number circuit for detecting, is coupled to this first signal pins, is arranged to detect the signal in this first signal pins
To produce a detection signal；And one control signal produce circuit, be coupled to this aligned signal produce circuit,
This indication signal circuit for detecting and this first switch arrays, be arranged in and triggered by this aligned signal
Time, produce multiple control signals according to this detection signal, many to control this of this first switch arrays respectively
Individual switch element；One second LED array, is coupled to this rectified signal, and comprises multiple LED of series connection
Device and the multiple nodes being positioned on the current path of this second LED array；One second switch array,
It is coupled to this rectified signal, and comprises multiple switch elements of series connection, wherein, this second switch array
The plurality of switch element is respectively coupled to the plurality of node of this second LED array so that this second switch
The plurality of switch element of array is parallel to the plurality of LED matrix of this second LED array respectively；With
And one second drive circuit, it is coupled to this second switch array, has identical with this first drive circuit
Circuit framework, and it is arranged to control the plurality of switch element of this second switch array；Wherein, this first
This first signal pins of drive circuit is coupled to one first signal pins of this second drive circuit, so that
Make this first drive circuit and this second drive circuit can adjust these first switch arrays second to hold with this simultaneously
Close the switching sequence of array.
The present invention separately provides the embodiment of a kind of one first drive circuit in a LED light emission device.
This LED light emission device includes a commutator, one first LED array and one first switch arrays,
This commutator is arranged to produce a rectified signal according to an AC signal, and this first LED array is coupled to this
Rectified signal, and comprise multiple LED matrix of series connection, these first switch arrays are coupled to this rectified signal,
And multiple switch elements of comprising series connection and the multiple joints being positioned on the current path of these the first switch arrays
Point, wherein, it is many that the plurality of node of these the first switch arrays is respectively coupled to this of this first LED array
Individual LED matrix so that the plurality of switch element of these the first switch arrays is parallel to a LED respectively
The plurality of LED matrix of array.This first drive circuit includes: one first signal pins；One judges
Circuit, is arranged to judge the size of an input signal；One indication signal produces circuit, is coupled to this judgement
Circuit and this first signal pins, be arranged to export an indication signal according to the judged result of this decision circuitry
To this first signal pins；One alignment signal generating circuit, is coupled to this first signal pins, is arranged to
When the predetermined edge by the signal in this first signal pins triggers, produce an aligned signal；One
Indication signal circuit for detecting, is coupled to this first signal pins, is arranged to detect in this first signal pins
Signal to produce a detection signal；And one control signal produce circuit, be coupled to this aligned signal produce
Raw circuit, this indication signal circuit for detecting and this first switch arrays, be arranged in and alignd by this
When signal triggers, produce multiple control signals according to this detection signal, to control the plurality of switch unit respectively
Part.
The present invention separately provides the embodiment of a kind of LED light emission device, and it comprises: a commutator, is arranged to
A rectified signal is produced according to an AC signal；One first LED array, is coupled to this rectified signal, and
Comprise multiple LED matrix of series connection；One first switch arrays, are coupled to this rectified signal, and comprise string
The multiple switch elements joined and the multiple nodes being positioned on the current path of these the first switch arrays, wherein,
The plurality of node of these the first switch arrays is respectively coupled to the plurality of LED dress of this first LED array
Put so that the plurality of switch element of these the first switch arrays is parallel to being somebody's turn to do of this first LED array respectively
Multiple LED matrix；One first drive circuit, includes: one first signal pins；One secondary signal is drawn
Foot；One decision circuitry, is arranged to judge the size of an input signal；One indication signal produces circuit, coupling
It is connected to this decision circuitry and this secondary signal pin, is arranged to export according to the judged result of this decision circuitry
One indication signal is to this secondary signal pin；One alignment signal generating circuit, is coupled to this first signal and draws
Foot, when being arranged in the predetermined edge triggering by the signal in this first signal pins, produces a pair
Neat signal；One indication signal circuit for detecting, is coupled to this first signal pins, be arranged to detect this first
Signal in signal pins is to produce a detection signal；And one control signal produce circuit, be coupled to this
Aligned signal produces circuit, this indication signal circuit for detecting and this first switch arrays, is arranged in
When being triggered by this aligned signal, produce multiple control signals according to this detection signal, to control this respectively
The plurality of switch element of the first switch arrays；One second LED array, is coupled to this rectified signal, and
The multiple LED matrix comprising series connection and the multiple joints being positioned on the current path of this second LED array
Point；One second switch array, is coupled to this rectified signal, and comprises multiple switch elements of series connection, its
In, the plurality of switch element of this second switch array is respectively coupled to the plurality of of this second LED array
Node so that the plurality of switch element of this second switch array is parallel to this second LED array respectively
The plurality of LED matrix；And one second drive circuit, be coupled to this second switch array, have with should
The circuit framework that first drive circuit is identical, and it is arranged to control the plurality of switch of this second switch array
Element；Wherein, this first signal pins of this first drive circuit is both coupled to this secondary signal pin
One first signal pins of this second drive circuit, but a secondary signal with this second drive circuit is not drawn
Foot couples mutually, to cause this first drive circuit and this second drive circuit can adjust this first switch simultaneously
Array and the switching sequence of this second switch array.
The present invention separately provides the embodiment of a kind of one first drive circuit in a LED light emission device.
This LED light emission device includes a commutator, one first LED array and one first switch arrays,
This commutator is arranged to produce a rectified signal according to an AC signal, and this first LED array is coupled to this
Rectified signal, and comprise multiple LED matrix of series connection, these first switch arrays are coupled to this rectified signal,
And multiple switch elements of comprising series connection and the multiple joints being positioned on the current path of these the first switch arrays
Point, wherein, it is many that the plurality of node of these the first switch arrays is respectively coupled to this of this first LED array
Individual LED matrix so that the plurality of switch element of these the first switch arrays is parallel to a LED respectively
The plurality of LED matrix of array.This first drive circuit includes: one first signal pins；One second
Signal pins；One decision circuitry, is arranged to judge the size of an input signal；One indication signal produces electricity
Road, is coupled to this decision circuitry and this secondary signal pin, is arranged to tie according to the judgement of this decision circuitry
Fruit output one indication signal is to this secondary signal pin；One alignment signal generating circuit, be coupled to this first
Signal pins, when being arranged in the predetermined edge triggering by the signal in this first signal pins, produces
A raw aligned signal；One indication signal circuit for detecting, is coupled to this first signal pins, is arranged to detecting
Signal in this first signal pins is to produce a detection signal；And one control signal produce circuit, coupling
It is connected to this aligned signal and produces circuit, this indication signal circuit for detecting and this first switch arrays, if
It is set to when being triggered by this aligned signal, produces multiple control signals according to this detection signal, with respectively
Control the plurality of switch element.
One of advantage of above-described embodiment, is that the multiple drive circuits in LED light emission device can adjust simultaneously
The switching sequence of corresponding multiple switch arrays so that the operation aspect of multiple LED array in parallel can be
Same time point switches, and luminous efficacy and the overall energy that thereby can effectively promote LED light emission device use
Efficiency.
Other advantages of the present invention will explain orally in more detail by the following description and accompanying drawing.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing further understanding of the present application, constitutes of the application
Point, the schematic description and description of the application is used for explaining the application, is not intended that the application's
Improper restriction.
Fig. 1 Yu Fig. 2 is the functional block diagram after the LED light emission device simplification of the present invention one first embodiment.
Fig. 3 is the functional block diagram after the LED light emission device simplification of the present invention one second embodiment.
Fig. 4 Yu Fig. 5 is the functional block diagram after the LED light emission device simplification of the present invention 1 the 3rd embodiment.
Fig. 6 is the functional block diagram after the LED light emission device simplification of the present invention 1 the 4th embodiment.
[symbol description]
100,300,400,600 LED light emission device
110 commutators
120a, 120b, 120c LED array
121～125 LED matrix
130a, 130b switch arrays
131～135 switch elements
140a, 140b, 140c, 440a, 440b, 440c drive circuit
141 decision circuitry
142 indication signals produce circuit
143 aligned signal produce circuit
144 indication signal circuit for detecting
145 control signals produce circuit
P1 the first signal pins
P2 secondary signal pin
S1～Sn node
Detailed description of the invention
Below in conjunction with relevant drawings, embodiments of the invention are described.In the accompanying drawings, identical label table
Show same or similar element or method flow.
Fig. 1 Yu Fig. 2 is the function side after LED light emission device 100 simplification of the present invention one first embodiment
Block figure.As shown in Figures 1 and 2, LED light emission device 100 include a commutator (rectifier) 110,
The LED array (LED array) of multiple parallel connections, the switch arrays (switch array) of multiple parallel connection and
The drive circuit of multiple parallel connections.For the sake of for convenience of explanation, Fig. 1 Yu Fig. 2 only illustrates one the oneth LED
Array 120a, one second LED array 120b, one the 3rd LED array 120c, one first switch arrays
130a, a second switch array 130b, one the 3rd switch arrays 130c, one first drive circuit 140a,
As a example by one second drive circuit 140b and one the 3rd drive circuit 140c.
Commutator 110 is arranged to produce a rectified signal (rectified according to an AC signal Vac
signal)HV.First LED array 120a is coupled to rectified signal HV, and comprises multiple LED of series connection
Device (such as, LED matrix 121～125 depicted in Fig. 1 Yu Fig. 2), wherein, each LED fills
Put and all include one or more LED element, and the LED element quantity in different LED matrix can phase
Together can also be different.First switch arrays 130a is coupled to rectified signal HV, and comprises the multiple of series connection
Switch element (such as, switch element 131～135 depicted in Fig. 1 Yu Fig. 2), and it is positioned at first
Multiple node S1～Sn on the current path of switch arrays 130a.As it can be seen, the first switch arrays
Multiple node S1～Sn of 130a are respectively coupled to multiple LED matrix of the first LED array 120a
121～125 so that multiple switch elements 131～135 of the first switch arrays 130a are parallel to respectively
Multiple LED matrix 121～125 of one LED array 120a.First drive circuit 140a is coupled to
One switch arrays 130a, is arranged to the multiple switch elements 131～135 controlling in the first switch arrays 130a
Switching running.
As it is shown in figure 1, the first drive circuit 140a includes one first signal pins P1, a decision circuitry
(determining circuit) 141, one indication signal produces circuit (indication signal generating
Circuit) 142, one alignment signal generating circuit (alignment signal generating circuit) 143, refers to
Show that signal detection circuit (indication signal detecting circuit) 144 and a control signal produce electricity
Road (control signal generating circuit) 145.
In the first drive circuit 140a, it is judged that circuit 141 is arranged to judge the size of an input signal,
Use the phase place change of detecting AC signal Vac.In the present embodiment, it is judged that the input letter of circuit 141
Number it is the rectified signal HV that exported of commutator 110.In implementation, it is judged that circuit 141 can use known
Circuit framework judges the size of rectified signal HV, to produce corresponding rising signals (up signal) UP
Or dropping signal (down signal) DN.
Indication signal produces circuit 142 and is coupled to decision circuitry 141 and the first signal pins P1, is arranged to
An indication signal is exported to the first signal pins P1 according to the judged result of decision circuitry 141.Such as, when
When indication signal produces the judged result that circuit 142 receives decision circuitry 141, can be pre-through one section
After determining time delay (predetermined delay period), output one corresponding indication signal is to the first letter
Number pin P1.Such as, when indication signal generation circuit 142 receives aforesaid rising signals UP,
The indication signal of one first current potential can be had to the first signal in output after one section of scheduled delay
Pin P1, and when indication signal generation circuit 142 receives aforesaid dropping signal DN, can be at warp
After crossing one section of scheduled delay, output has the indication signal of a second different current potential to the first signal
Pin P1.
In other words, indication signal produces circuit 142 and exports the indication signal to the first signal pins P1,
The judged result of decision circuitry 141 in the first drive circuit 140a can be reflected.
In the first drive circuit 140a, indication signal produces circuit 142 and indication signal is exported to first
The time point of signal pins P1, represent the first drive circuit 140a intend (intend to) adjust first and open
The time point of the switching sequence of the multiple switch elements 131～135 in the array 130a of pass.
Aligned signal produces circuit 143 and is coupled to the first signal pins P1, is arranged in by the first signal
When one predetermined edge (such as, rising edge or falling edge) of the signal on pin P1 triggers, produce an alignment
Signal.
Indication signal circuit for detecting 144 is coupled to the first signal pins P1, is arranged to detect the first signal and draws
Signal on foot P1 is to produce a detection signal.If signal in the first signal pins P1 at that time is to have
The signal of aforementioned first current potential, it indicates that signal detection circuit 144 can produce and aforesaid rising signals UP
Similar or identical signal is using as this detection signal.If signal in the first signal pins P1 at that time is
There is the signal of aforementioned second current potential, it indicates that signal detection circuit 144 can produce and decline letter with aforesaid
Number signal similar or identical for DN is using as this detection signal.
Control signal produces circuit 145 and is coupled to aligned signal generation circuit 143, indication signal circuit for detecting
144 and the first switch arrays 130a, it is arranged in when being triggered by aforesaid aligned signal, according to referring to
Show that the detection signal that signal detection circuit 144 exported at that time produces multiple control signals, to control the respectively
The switching running of multiple switch elements 131～135 of one switch arrays 130a.
In the embodiment of Fig. 1 Yu Fig. 2, the first LED array 120a, the second LED array 120b,
And the 3rd LED array 120c there is identical circuit framework.First switch arrays 130a, second switch
Array 130b and the 3rd switch arrays 130c has identical circuit framework.First drive circuit 140a,
Second drive circuit 140b and the 3rd drive circuit 140c has identical circuit framework.Such as, second
LED array 120b is also coupled to rectified signal HV, and comprise series connection multiple LED matrix 121～
125 and multiple node S1～Sn of being positioned on the current path of the second LED array 120b.Second opens
Close array 130b and be also coupled to rectified signal HV, and comprise multiple switch elements 131～135 of series connection.
Similarly, multiple switch elements 131～135 of second switch array 130b are respectively coupled to the 2nd LED
Multiple node S1～Sn of array 120b so that multiple switch elements 131 of second switch array 130b～
The 135 multiple LED matrix 121～125 being parallel to the second LED array 120b respectively.Second drives electricity
Road 140b is then coupled to second switch array 130b, and it is many to be arranged to control second switch array 130b
The switching running of individual switch element 131～135.
In LED light emission device 100, the first LED array 120a, the first switch arrays 130a, with
And first the combination of drive circuit 140a constitute the first set illuminating circuit in LED light emission device 100.
Second LED array 120b, second switch array 130b and the combination structure of the second drive circuit 140b
Become the second set illuminating circuit in LED light emission device 100.3rd LED array 120c, the 3rd open
The combination closing array 130c and the 3rd drive circuit 140c then constitutes in LED light emission device 100
The 3rd set illuminating circuit.As it can be seen, aforesaid three set illuminating circuits are frameworks in parallel.Note that
The tricks of the illuminating circuit in aforementioned LED light emission device 100 is merely illustrative, and not limits to LED
The actual embodiment of light-emitting device 100.
In the embodiment of Fig. 1 Yu Fig. 2, first of all drive circuits in LED light emission device 100
Signal pins P1 is all coupled together.Such as, the first signal pins P1 coupling of the first drive circuit 140a
It is connected to first signal pins P1 of the second drive circuit 140b, is coupled to the 3rd drive circuit 140c the most simultaneously
The first signal pins P1.Under the connected mode of aforementioned first signal pins P1, LED luminescence fills
Put the drive circuit intending to adjust the switching sequence of corresponding switch arrays in 100 at first, letter can be indicated
Number produce circuit 142 export the indication signal in its first signal pins P1, be coupled simultaneously to other and drive
In first signal pins P1 on galvanic electricity road, to cause all of drive circuit can adjust all switch arrays simultaneously
The switching sequence of row.
Such as, produce, when the indication signal of the first drive circuit 140a, the indication signal that circuit 142 will produce
Export the time point of first signal pins P1 of the first drive circuit 140a, than other drive circuits all
Time to be come ahead of time, when representing the switching that the first drive circuit 140a plan adjusts the first switch arrays 130a
The time point of sequence, intends to adjust the time point of the switching sequence of corresponding switch arrays early than other drive circuits.
Now, owing to the first signal pins P1 of all drive circuits is all coupled together, so first drives electricity
The indication signal of road 140a produces circuit 142 and exports first signal pins of the first drive circuit 140a
Indication signal on P1, can be coupled simultaneously in first signal pins P1 of the second drive circuit 140b,
Also can be coupled simultaneously in first signal pins P1 of the 3rd drive circuit 140c.
In the case, the letter of the alignment in both the second drive circuit 140b and the 3rd drive circuit 140c
Number produce circuit 143 and indication signal circuit for detecting 144, all can be according to the finger of the first drive circuit 140a
Show that indication signal produced by signal generating circuit 142 operates, in turn result in the first drive circuit 140a,
Control signal in second drive circuit 140b and the 3rd drive circuit 140c three produces circuit 145 meeting
Synchronize start, cause the first drive circuit 140a, the second drive circuit 140b and the 3rd drive circuit 140c
The first switch arrays 130a, second switch array 130b and the 3rd switch arrays 130c can be adjusted simultaneously
Switching sequence.In other words, now adjust the first switch arrays 130a, second switch array 130b and
The time point of the switching sequence of the 3rd switch arrays 130c, is to be determined by the first drive circuit 140a.
The most such as, produce, when the indication signal of the second drive circuit 140b, the instruction letter that circuit 142 will produce
Number output is to the time point of the first signal pins P1 of the second drive circuit 140b, than other drive circuits
When will come ahead of time, represent the second drive circuit 140b and intend to adjust the switching of second switch array 130b
The time point of sequential, intends to adjust the time of the switching sequence of corresponding switch arrays early than other drive circuits
Point.Now, owing to the first signal pins P1 of all drive circuits is all coupled together, so second drives
The indication signal of galvanic electricity road 140b produces circuit 142 and exports first signal of the second drive circuit 140b
Indication signal on pin P1, can be coupled simultaneously to first signal pins P1 of the first drive circuit 140a
On, also can be coupled simultaneously in first signal pins P1 of the 3rd drive circuit 140c.
In the case, the letter of the alignment in both the first drive circuit 140a and the 3rd drive circuit 140c
Number produce circuit 143 and indication signal circuit for detecting 144, all can be according to the finger of the second drive circuit 140b
Show that indication signal produced by signal generating circuit 142 operates, in turn result in the first drive circuit 140a,
Control signal in second drive circuit 140b and the 3rd drive circuit 140c three produces circuit 145 meeting
Synchronize start, cause the first drive circuit 140a, the second drive circuit 140b and the 3rd drive circuit 140c
The first switch arrays 130a, second switch array 130b and the 3rd switch arrays 130c can be adjusted simultaneously
Switching sequence.In other words, now adjust the first switch arrays 130a, second switch array 130b and
The time point of the switching sequence of the 3rd switch arrays 130c, is to be determined by the second drive circuit 140b.
From preceding description, in LED light emission device 100, any one drive circuit has the opportunity to
Become the drive circuit of the switching sequence determining all switch arrays.
Due in LED light emission device 100 multiple drive circuits (such as, drive circuit 140a, 140b,
With 140c), can the same time adjust multiple switch arrays (such as, switch arrays 130a, 130b and
Switching sequence 130c) so that in parallel multiple LED array (such as, LED array 120a, 120b,
With 120c) operation aspect can be switched at same time point.During consequently, it is possible to just switching can be prevented effectively from
Sequence is not mated the problem of (switching timing mismatch) and is occurred, and then promotes LED light emission device 100
Luminous efficacy and overall energy use efficiency.
In aforesaid LED light emission device 100, the input signal of the decision circuitry 141 in each drive circuit
It is the rectified signal HV that exported of commutator 110, but this is an embodiment, rather than limitation decision circuitry
The actual embodiment of 141.
Such as, the function side after Fig. 3 is LED light emission device 300 simplification of the present invention one second embodiment
Block figure.In LED light emission device 300, the input signal of the decision circuitry 141 in each drive circuit is
One of them signal provided by multiple node S1～Sn of corresponding switch arrays.Such as, first
Input signal SXa of the decision circuitry 141 in drive circuit 140a, is by the first switch arrays 130a
One of them signal provided of multiple node S1～Sn (such as, node S3 or S4 is provided
Signal), input signal SXb of the decision circuitry 141 in the second drive circuit 140b, is to be opened by second
Close array 130b multiple node S1～Sn one of them signal provided (such as, node S3 or
The signal that S4 is provided), the rest may be inferred for remaining.
The embodiment of other elements, function mode and phase in relevant aforementioned LED light emission device 100
The explanation of pass advantage, the also counter element be applicable to LED light emission device 300, for simplicity's sake,
This not repeated description.
Fig. 4 Yu Fig. 5 is the function side after LED light emission device 400 simplification of the present invention 1 the 3rd embodiment
Block figure.Similar with aforesaid LED light emission device 100, LED light emission device 400 includes commutator
110, the driving electricity of the LED array of multiple parallel connections, the switch arrays of multiple parallel connection and multiple parallel connection
Road.For the sake of for convenience of explanation, in Fig. 4 with Fig. 5 as only illustrate the first LED array 120a,
Two LED array 120b, the 3rd LED array 120c, the first switch arrays 130a, second switch array
130b, the 3rd switch arrays 130c, one first drive circuit 440a, one second drive circuit 440b, with
And one the 3rd as a example by drive circuit 440c.
Commutator the 110, first LED array 120a in LED light emission device 400, the 2nd LED battle array
Row 120b, the 3rd LED array 120c, the first switch arrays 130a, second switch array 130b and
The embodiment of the 3rd switch arrays 130c and annexation, all with in aforementioned LED light emission device 100
Counter element identical, for simplicity's sake, the not repeated description at this.
As shown in Figure 4, the first drive circuit 440a includes the first signal pins P1, decision circuitry equally
141, indication signal produce circuit 142, aligned signal produce circuit 143, indication signal circuit for detecting 144,
And control signal produces circuit 145.First drive circuit 440a and aforesaid first drive circuit 140a
Difference, essentially consist in the first drive circuit 440a and the most additionally comprise a secondary signal pin P2, and first
Indication signal in drive circuit 440a produces the annexation of circuit 142, with aforementioned first drive circuit
The annexation that indication signal in 140a produces circuit 142 is different.
In the first drive circuit 440a, indication signal produce circuit 142 be coupled to decision circuitry 141 with
Secondary signal pin P2, is arranged to the judged result according to decision circuitry 141 and exports an indication signal to the
Binary signal pin P2.Such as, the judgement of decision circuitry 141 is received when indication signal produces circuit 142
During result, can be after one section of scheduled delay, output one corresponding indication signal is to the second letter
Number pin P2.Such as, when indication signal generation circuit 142 receives aforesaid rising signals UP,
The indication signal of one first current potential can be had to secondary signal in output after one section of scheduled delay
Pin P2, and when indication signal generation circuit 142 receives aforesaid dropping signal DN, can be at warp
After crossing one section of scheduled delay, output has the indication signal of a second different current potential to secondary signal
Pin P2.
In other words, indication signal produces circuit 142 and exports the indication signal to secondary signal pin P2,
The judged result of decision circuitry 141 in the first drive circuit 440a can be reflected.
In the first drive circuit 440a, indication signal produces circuit 142 and indication signal is exported to second
The time point of signal pins P2, represent the first drive circuit 440a intend (intend to) adjust first and open
The time point of the switching sequence of the multiple switch elements 131～135 in the array 130a of pass.
Aligned signal in first drive circuit 440a produce circuit 143, indication signal circuit for detecting 144,
And control signal produces embodiment and the annexation of circuit 145, all with aforementioned first drive circuit
Counter element in 140a is identical, for simplicity's sake, and the not repeated description at this.
In LED light emission device 400, the first drive circuit 440a, the second drive circuit 440b and
3rd drive circuit 440c has identical circuit framework.Additionally, the first LED array 120a, first
The combination of switch arrays 130a and the first drive circuit 440a constitutes in LED light emission device 400
First set illuminating circuit.Second LED array 120b, second switch array 130b and second drive
The combination of galvanic electricity road 440b constitutes the second set illuminating circuit in LED light emission device 400.3rd LED
Array 120c, the combination of the 3rd switch arrays 130c and the 3rd drive circuit 440c then constitute LED
The 3rd set illuminating circuit in light-emitting device 400.As it can be seen, aforesaid three set illuminating circuits are in parallel
Framework.Note that the tricks of the illuminating circuit in aforementioned LED light emission device 400 is merely illustrative,
Not limit to the actual embodiment of LED light emission device 400.
First signal pins P1 of all drive circuits in LED light emission device 400 is all coupled together,
But the only first drive circuit 440a can be the first signal pins P1 of oneself and secondary signal pin P2
Being coupled together, remaining drive circuit draws with secondary signal all without the first signal pins P1 of oneself
Foot P2 phase couples.
Such as, in the embodiment of Fig. 4 Yu Fig. 5, first signal pins P1 of the first drive circuit 440a
With secondary signal pin P2, it is both coupled to first signal pins P1 and the 3rd of the second drive circuit 440b
First signal pins P1 of drive circuit 440c, but secondary signal with the second drive circuit 440b is not drawn
Foot P2 phase couples, and the most the secondary signal pin P2 phase with the 3rd drive circuit 440c does not couples.
Under aforesaid signal pins connected mode, the only first drive circuit 440a can be indicated letter
Number produce circuit 142 export the indication signal on its secondary signal pin P2, be coupled simultaneously to oneself
In first signal pins P1 of the first signal pins P1 and other drive circuits, to cause all of driving
Galvanic electricity road can adjust the switching sequence of all switch arrays simultaneously.
As it was previously stated, indication signal produces circuit 142, and indication signal exports secondary signal pin P2's
Time point, represent that the first drive circuit 440a intends to adjust in the first switch arrays 130a multiple opens
Close the time point of the switching sequence of element 131～135.Now, due to the of the first drive circuit 440a
Binary signal pin P2 is coupled together with the first signal pins P1 of all drive circuits, so first
The indication signal of drive circuit 440a produces circuit 142 and exports second letter of the first drive circuit 440a
Indication signal on number pin P2, can be coupled simultaneously to first signal pins of the second drive circuit 440b
On P1, also can be coupled simultaneously in first signal pins P1 of the 3rd drive circuit 440c.
In the case, the letter of the alignment in both the second drive circuit 440b and the 3rd drive circuit 440c
Number produce circuit 143 and indication signal circuit for detecting 144, all can be according to the finger of the first drive circuit 440a
Show that indication signal produced by signal generating circuit 142 operates, in turn result in the first drive circuit 440a,
Control signal in second drive circuit 440b and the 3rd drive circuit 440c three produces circuit 145 meeting
Synchronize start, cause the first drive circuit 440a, the second drive circuit 440b and the 3rd drive circuit 440c
The first switch arrays 130a, second switch array 130b and the 3rd switch arrays 130c can be adjusted simultaneously
Switching sequence.In other words, the first switch arrays 130a, second switch array 130b and the 3rd are adjusted
The time point of the switching sequence of switch arrays 130c, the most only can be determined by the first drive circuit 440a.
From preceding description, in LED light emission device 400, the only first drive circuit 440a tool
Having the switching sequence power to make decision of all switch arrays, other drive circuit all can only drive electricity according to first
The instruction of road 440a operates.
Due in LED light emission device 400 multiple drive circuits (such as, drive circuit 440a, 440b,
With 440c), can the same time adjust multiple switch arrays (such as, switch arrays 130a, 130b and
Switching sequence 130c) so that in parallel multiple LED array (such as, LED array 120a, 120b,
With 120c) operation aspect can be switched at same time point.During consequently, it is possible to just switching can be prevented effectively from
Sequence is not mated the problem of (switching timing mismatch) and is occurred, and then promotes LED light emission device 400
Luminous efficacy and overall energy use efficiency.
It addition, the manufacturer of LED light emission device 400 can be according to the characteristic of side circuit environment, will tool
There is drive circuit (such as, aforesaid first drive circuit of the switching sequence power to make decision of all switch arrays
440a) it is arranged on optimal position, to promote the reliability of total system.
In aforesaid LED light emission device 400, the input signal of the decision circuitry 141 in each drive circuit
It is the rectified signal HV that exported of commutator 110, but this is an embodiment, rather than limitation decision circuitry
The actual embodiment of 141.
Such as, the function side after Fig. 6 is LED light emission device 600 simplification of the present invention 1 the 4th embodiment
Block figure.In LED light emission device 600, the input signal of the decision circuitry 141 in each drive circuit is
One of them signal provided by multiple node S1～Sn of corresponding switch arrays.Such as, first
Input signal SXa of the decision circuitry 141 in drive circuit 440a, is by the first switch arrays 130a
One of them signal provided of multiple node S1～Sn (such as, node S3 or S4 is provided
Signal), input signal SXb of the decision circuitry 141 in the second drive circuit 440b, is to be opened by second
Close array 130b multiple node S1～Sn one of them signal provided (such as, node S3 or
The signal that S4 is provided), the rest may be inferred for remaining.
The embodiment of other elements, function mode and phase in relevant aforementioned LED light emission device 400
The explanation of pass advantage, the also counter element be applicable to LED light emission device 600, for simplicity's sake,
This not repeated description.
Difference in functionality square in aforementioned LED light emission device 100,300,400 or 600 can be used respectively
Different circuit realizes, it is possible to be incorporated in a single circuit chip.Such as, the first drive circuit 140a
Or all function block in 440a may be integrally incorporated in a single circuit chip, it is also possible to further by
One switch arrays 130a is incorporated in the first drive circuit 140a or 440a, to form a single circuit core
Sheet.It is equally possible that second switch array 130b is incorporated into the second drive circuit 140b or 440b
In, to form a single circuit chip.
Some vocabulary is employed to censure specific element in specification and claims.But, institute
Belong to those skilled in the art it is to be appreciated that same element may be called with different nouns.
Specification and claims are not using the difference of title as in the way of distinguishing element, but exist with element
Difference functionally is used as the benchmark distinguished.In " comprising " mentioned by specification and claims
For open term, therefore " comprise but be not limited to " should be construed to.It addition, " coupling " wraps at this
Means directly and are indirectly connected containing any.Therefore, if the first element is coupled to the second element described in literary composition,
Then represent the first element can by being electrically connected with or being wirelessly transferred, the signal connected mode such as optical delivery and straight
Grounding connection is in the second element, or the indirectly electrical or signal connection by other elements or connection means
To this second element.
Used herein " and/or " describing mode, comprise cited one of them or multiple project
Combination in any.It addition, unless specialized in description, the term of the most any odd number lattice is all simultaneously
Comprise the connotation of plural number lattice.
These are only presently preferred embodiments of the present invention, all impartial changes done according to the claims in the present invention with
Modify, all should belong to the covering scope of the present invention.
Claims (22)
1. a LED light emission device (100；300), include:
One commutator (110), is arranged to produce a rectified signal (HV) according to an AC signal (Vac)；
One first LED array (120a), is coupled to this rectified signal (HV), and comprises multiple LED of series connection
Device (121～125)；
One first switch arrays (130a), are coupled to this rectified signal (HV), and comprise multiple switches of series connection
Element (131～135) and be positioned at the multiple nodes on the current path of these the first switch arrays (130a)
(S1～Sn), wherein, the plurality of node (S1～Sn) of these the first switch arrays (130a) is respectively coupled to this
The plurality of LED matrix (121～125) of the first LED array (120a) so that these first switch arrays
(130a) it is many that the plurality of switch element (131～135) is parallel to this of this first LED array (120a) respectively
Individual LED matrix (121～125)；
One first drive circuit (140a), includes:
One first signal pins (P1)；
One decision circuitry (141), is arranged to judge the size of an input signal (HV, SXa)；
One indication signal produces circuit (142), is coupled to this decision circuitry (141) and this first signal pins
(P1), it is arranged to export an indication signal to this first signal according to the judged result of this decision circuitry (141)
Pin (P1)；
One alignment signal generating circuit (143), is coupled to this first signal pins (P1), is arranged in and is subject to
When one predetermined edge of the signal in this first signal pins (P1) triggers, produce an aligned signal；
One indication signal circuit for detecting (144), is coupled to this first signal pins (P1), and being arranged to detecting should
Signal in first signal pins (P1) is to produce a detection signal；And
One control signal produces circuit (145), is coupled to this aligned signal and produces circuit (143), this instruction letter
Number circuit for detecting (144) and this first switch arrays (130a), be arranged in and triggered by this aligned signal
Time, produce multiple control signals according to this detection signal, to control this first switch arrays (130a) respectively
The plurality of switch element (131～135)；
One second LED array (120b), is coupled to this rectified signal (HV), and comprises multiple LED of series connection
Device (121～125) and be positioned at the multiple nodes on the current path of this second LED array (120b)
(S1～Sn)；
One second switch array (130b), is coupled to this rectified signal (HV), and comprises multiple switches of series connection
Element (131～135), wherein, the plurality of switch element (131～135) of this second switch array (130b)
It is respectively coupled to the plurality of node (S1～Sn) of this second LED array (120b) so that this second switch
The plurality of switch element (131～135) of array (130b) is parallel to this second LED array (120b) respectively
The plurality of LED matrix (121～125)；And
One second drive circuit (140b), is coupled to this second switch array (130b), has and first drives with this
The circuit framework that galvanic electricity road (140a) is identical, and be arranged to control the plurality of of this second switch array (130b)
Switch element (131～135)；
Wherein, this first signal pins (P1) of this first drive circuit (140a) is coupled to this second driving electricity
One first signal pins (P1) on road (140b), to cause this first drive circuit (140a) and this second driving
When circuit (140b) adjusts the switching of these first switch arrays (130a) and this second switch array (130b) simultaneously
Sequence.
2. LED light emission device (100) as claimed in claim 1, wherein, this of this decision circuitry (141) is defeated
Entering signal (HV) is this rectified signal (HV) that this commutator (110) is exported.
3. LED light emission device (300) as claimed in claim 1, wherein, this of this decision circuitry (141) is defeated
Entering signal (SXa) is by one of them institute of the plurality of node (S1～Sn) of these the first switch arrays (130a)
The signal provided.
4. LED light emission device (100 as claimed in claim 1；300) this first switch arrays, wherein, is adjusted
The time point of the switching sequence of row (130a) and this second switch array (130b), is by this first drive circuit
(140a) with this second drive circuit (140b) one of them determine.
5. LED light emission device (100 as claimed in claim 1；300), wherein, produce when this indication signal
When circuit (142) receives the judged result of this decision circuitry (141), after one section of scheduled delay
Export this indication signal to this first signal pins (P1).
6. one kind is used for a LED light emission device (100；300) one first drive circuit (140a) in, should
LED light emission device (100；300) include a commutator (110), one first LED array (120a), with
And one first switch arrays (130a), this commutator (110) is arranged to produce one according to an AC signal (Vac)
Rectified signal (HV), this first LED array (120a) is coupled to this rectified signal (HV), and comprises series connection
Multiple LED matrix (121～125), these first switch arrays (130a) are coupled to this rectified signal (HV),
And multiple switch elements (131～135) of comprising series connection and the electric current being positioned at these the first switch arrays (130a)
Multiple nodes (S1～Sn) on path, wherein, the plurality of node of these the first switch arrays (130a) (S1～
Sn) the plurality of LED matrix (121～125) of this first LED array (120a) it is respectively coupled to so that should
The plurality of switch element (131～135) of the first switch arrays (130a) is parallel to a LED battle array respectively
The plurality of LED matrix (121～125) of row (120a), this first drive circuit (140a) includes:
One first signal pins (P1)；
One decision circuitry (141), is arranged to judge the size of an input signal (HV, SXa)；
One indication signal produces circuit (142), is coupled to this decision circuitry (141) and this first signal pins
(P1), it is arranged to export an indication signal to this first signal according to the judged result of this decision circuitry (141)
Pin (P1)；
One alignment signal generating circuit (143), is coupled to this first signal pins (P1), is arranged in and is subject to
When one predetermined edge of the signal in this first signal pins (P1) triggers, produce an aligned signal；
One indication signal circuit for detecting (144), is coupled to this first signal pins (P1), and being arranged to detecting should
Signal in first signal pins (P1) is to produce a detection signal；And
One control signal produces circuit (145), is coupled to this aligned signal and produces circuit (143), this instruction letter
Number circuit for detecting (144) and this first switch arrays (130a), be arranged in and triggered by this aligned signal
Time, according to this detection signal produce multiple control signals, with control respectively the plurality of switch element (131～
135)。
First drive circuit (140a) the most as claimed in claim 6, wherein, this of this decision circuitry (141) is defeated
Entering signal (HV) is this rectified signal (HV) that this commutator (110) is exported.
First drive circuit (140a) the most as claimed in claim 6, wherein, this of this decision circuitry (141) is defeated
Entering signal (SXa) is by one of them institute of the plurality of node (S1～Sn) of these the first switch arrays (130a)
The signal provided.
First drive circuit (140a) the most as claimed in claim 6, wherein, this LED light emission device (100；
300) additionally comprised one second LED array (120b), a second switch array (130b) and one second drives
Galvanic electricity road (140b), wherein, this second LED array (120b) is coupled to this rectified signal (HV), and bag
Containing the multiple LED matrix (121～125) connected and the electric current road being positioned at this second LED array (120b)
Multiple nodes (S1～Sn) on footpath, this second switch array (130b) is coupled to this rectified signal (HV), and
Comprise multiple switch elements (131～135) of series connection, the plurality of switch unit of this second switch array (130b)
Part (131～135) is respectively coupled to the plurality of node (S1～Sn) of this second LED array (120b) so that
The plurality of switch element (131～135) of this second switch array (130b) is parallel to the 2nd LED respectively
The plurality of LED matrix (121～125) of array (120b), this second drive circuit (140b) be coupled to this
Two switch arrays (130b), have the circuit framework identical with this first drive circuit (140a), and are arranged to
Control the plurality of switch element (131～135) of this second switch array (130b)；
Wherein, this first signal pins (P1) of this first drive circuit (140a) is used for being coupled to this and second drives
One first signal pins (P1) on galvanic electricity road (140b), with cause this first drive circuit (140a) with this second
Drive circuit (140b) adjusts cutting of these first switch arrays (130a) and this second switch array (130b) simultaneously
Change sequential.
First drive circuit (140a) the most as claimed in claim 9, wherein, adjusts this first switch arrays
(130a) with the time point of the switching sequence of this second switch array (130b), it is by this first drive circuit
(140a) with this second drive circuit (140b) one of them determine.
11. first drive circuits (140a) as claimed in claim 6, wherein, when this indication signal produces circuit
(142), when receiving the judged result of this decision circuitry (141), exporting after one section of scheduled delay
This indication signal is to this first signal pins (P1).
12. 1 kinds of LED light emission device (400；600), include:
One commutator (110), is arranged to produce a rectified signal (HV) according to an AC signal (Vac)；
One first LED array (120a), is coupled to this rectified signal (HV), and comprises multiple LED of series connection
Device (121～125)；
One first switch arrays (130a), are coupled to this rectified signal (HV), and comprise multiple switches of series connection
Element (131～135) and be positioned at the multiple nodes on the current path of these the first switch arrays (130a)
(S1～Sn), wherein, the plurality of node (S1～Sn) of these the first switch arrays (130a) is respectively coupled to this
The plurality of LED matrix (121～125) of the first LED array (120a) so that these first switch arrays
(130a) it is many that the plurality of switch element (131～135) is parallel to this of this first LED array (120a) respectively
Individual LED matrix (121～125)；
One first drive circuit (440a), includes:
One first signal pins (P1)；
One secondary signal pin (P2)；
One decision circuitry (141), is arranged to judge the size of an input signal (HV, SXa)；
One indication signal produces circuit (142), is coupled to this decision circuitry (141) and this secondary signal pin
(P2), it is arranged to export an indication signal to this secondary signal according to the judged result of this decision circuitry (141)
Pin (P2)；
One alignment signal generating circuit (143), is coupled to this first signal pins (P1), is arranged in and is subject to
When one predetermined edge of the signal in this first signal pins (P1) triggers, produce an aligned signal；
One indication signal circuit for detecting (144), is coupled to this first signal pins (P1), and being arranged to detecting should
Signal in first signal pins (P1) is to produce a detection signal；And
One control signal produces circuit (145), is coupled to this aligned signal and produces circuit (143), this instruction letter
Number circuit for detecting (144) and this first switch arrays (130a), be arranged in and triggered by this aligned signal
Time, produce multiple control signals according to this detection signal, to control this first switch arrays (130a) respectively
The plurality of switch element (131～135)；
One second LED array (120b), is coupled to this rectified signal (HV), and comprises multiple LED of series connection
Device (121～125) and be positioned at the multiple nodes on the current path of this second LED array (120b)
(S1～Sn)；
One second switch array (130b), is coupled to this rectified signal (HV), and comprises multiple switches of series connection
Element (131～135), wherein, the plurality of switch element (131～135) of this second switch array (130b)
It is respectively coupled to the plurality of node (S1～Sn) of this second LED array (120b) so that this second switch
The plurality of switch element (131～135) of array (130b) is parallel to this second LED array (120b) respectively
The plurality of LED matrix (121～125)；And
One second drive circuit (440b), is coupled to this second switch array (130b), has and first drives with this
The circuit framework that galvanic electricity road (440a) is identical, and be arranged to control the plurality of of this second switch array (130b)
Switch element (131～135)；
Wherein, this first signal pins (P1) of this first drive circuit (440a) and this secondary signal pin (P2)
It is both coupled to one first signal pins (P1) of this second drive circuit (440b), but not electric with this second driving
The one secondary signal pin (P2) on road (440b) couples mutually, with cause this first drive circuit (440a) with this
Two drive circuits (440b) adjust these first switch arrays (130a) and this second switch array (130b) simultaneously
Switching sequence.
The LED light emission device (400) of 13. such as claim 12, wherein, being somebody's turn to do of this decision circuitry (141)
Input signal (HV) is this rectified signal (HV) that this commutator (110) is exported.
The LED light emission device (600) of 14. such as claim 12, wherein, being somebody's turn to do of this decision circuitry (141)
Input signal (SXa) is by one of them of the plurality of node (S1～Sn) of these the first switch arrays (130a)
The signal provided.
The LED light emission device (400 of 15. such as claim 12；600) this first switch, wherein, is adjusted
The time point of the switching sequence of array (130a) and this second switch array (130b), only by this first driving electricity
Road (440a) determines.
The LED light emission device (400 of 16. such as claim 12；600), wherein, produce when this indication signal
When raw circuit (142) receives the judged result of this decision circuitry (141), through one section of scheduled delay
This indication signal of rear output is to this secondary signal pin (P2).
17. 1 kinds are used for a LED light emission device (400；600) one first drive circuit (440a) in,
This LED light emission device (400；600) include a commutator (110), one first LED array (120a),
And one first switch arrays (130a), this commutator (110) is arranged to produce according to an AC signal (Vac)
One rectified signal (HV), this first LED array (120a) is coupled to this rectified signal (HV), and comprises string
Multiple LED matrix (121～125) of connection, these first switch arrays (130a) are coupled to this rectified signal
, and multiple switch elements (131～135) of comprising series connection and be positioned at this first switch arrays (130a) (HV)
Current path on multiple nodes (S1～Sn), wherein, the plurality of joint of these the first switch arrays (130a)
Point (S1～Sn) is respectively coupled to the plurality of LED matrix (121～125) of this first LED array (120a),
The plurality of switch element (131～135) making these the first switch arrays (130a) be parallel to respectively this first
The plurality of LED matrix (121～125) of LED array (120a), this first drive circuit (440a) includes:
One first signal pins (P1)；
One secondary signal pin (P2)；
One decision circuitry (141), is arranged to judge the size of an input signal (HV, SXa)；
One indication signal produces circuit (142), is coupled to this decision circuitry (141) and this secondary signal pin
(P2), it is arranged to export an indication signal to this secondary signal according to the judged result of this decision circuitry (141)
Pin (P2)；
One alignment signal generating circuit (143), is coupled to this first signal pins (P1), is arranged in and is subject to
When one predetermined edge of the signal in this first signal pins (P1) triggers, produce an aligned signal；
One indication signal circuit for detecting (144), is coupled to this first signal pins (P1), and being arranged to detecting should
Signal in first signal pins (P1) is to produce a detection signal；And
One control signal produces circuit (145), is coupled to this aligned signal and produces circuit (143), this instruction letter
Number circuit for detecting (144) and this first switch arrays (130a), be arranged in and triggered by this aligned signal
Time, according to this detection signal produce multiple control signals, with control respectively the plurality of switch element (131～
135)。
First drive circuit (440a) of 18. such as claim 17, wherein, being somebody's turn to do of this decision circuitry (141)
Input signal (HV) is this rectified signal (HV) that this commutator (110) is exported.
First drive circuit (440a) of 19. such as claim 17, wherein, being somebody's turn to do of this decision circuitry (141)
Input signal (SXa) is by one of them of the plurality of node (S1～Sn) of these the first switch arrays (130a)
The signal provided.
First drive circuit (440a) of 20. such as claim 17, wherein, this LED light emission device (400；
600) additionally comprised one second LED array (120b), a second switch array (130b) and one second drives
Galvanic electricity road (440b), wherein, this second LED array (120b) is coupled to this rectified signal (HV), and bag
Containing the multiple LED matrix (121～125) connected and the electric current road being positioned at this second LED array (120b)
Multiple nodes (S1～Sn) on footpath, this second switch array (130b) is coupled to this rectified signal (HV), and
Comprise multiple switch elements (131～135) of series connection, the plurality of switch unit of this second switch array (130b)
Part (131～135) is respectively coupled to the plurality of node (S1～Sn) of this second LED array (120b) so that
The plurality of switch element (131～135) of this second switch array (130b) is parallel to the 2nd LED respectively
The plurality of LED matrix (121～125) of array (120b), this second drive circuit (440b) be coupled to this
Two switch arrays (130b), have the circuit framework identical with this first drive circuit (440a), and are arranged to
Control the plurality of switch element (131～135) of this second switch array (130b)；
Wherein, this first signal pins (P1) of this first drive circuit (440a) and this secondary signal pin (P2)
All it is used for coupling one first signal pins (P1) of this second drive circuit (440b), but second does not drives with this
One secondary signal pin (P2) of circuit (440b) couples mutually, to cause this first drive circuit (440a) and to be somebody's turn to do
Second drive circuit (440b) adjusts these first switch arrays (130a) and this second switch array (130b) simultaneously
Switching sequence.
First drive circuit (440a) of 21. such as claim 20, wherein, adjusts this first switch arrays
(130a) with the time point of the switching sequence of this second switch array (130b), only by this first drive circuit
(440a) determine.
First drive circuit (440a) of 22. such as claim 17, wherein, when this indication signal produces electricity
When road (142) receives the judged result of this decision circuitry (141), defeated after one section of scheduled delay
Go out this indication signal to this secondary signal pin (P2).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510298882.9A CN106304526A (en) | 2015-06-03 | 2015-06-03 | LED light emission device and relevant drive circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510298882.9A CN106304526A (en) | 2015-06-03 | 2015-06-03 | LED light emission device and relevant drive circuit |
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| CN106304526A true CN106304526A (en) | 2017-01-04 |
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| US7116294B2 (en) * | 2003-02-07 | 2006-10-03 | Whelen Engineering Company, Inc. | LED driver circuits |
| CN102647826A (en) * | 2011-02-18 | 2012-08-22 | 美格纳半导体有限公司 | Pwm controlling circuit and led driver circuit having the same |
| CN102811538A (en) * | 2012-07-24 | 2012-12-05 | 上海亚明照明有限公司 | Driving circuit for light emitting diode (LED) module |
| CN204119616U (en) * | 2014-10-15 | 2015-01-21 | 立锜科技股份有限公司 | Light-emitting component driving chip |
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2015
- 2015-06-03 CN CN201510298882.9A patent/CN106304526A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7116294B2 (en) * | 2003-02-07 | 2006-10-03 | Whelen Engineering Company, Inc. | LED driver circuits |
| CN102647826A (en) * | 2011-02-18 | 2012-08-22 | 美格纳半导体有限公司 | Pwm controlling circuit and led driver circuit having the same |
| CN102811538A (en) * | 2012-07-24 | 2012-12-05 | 上海亚明照明有限公司 | Driving circuit for light emitting diode (LED) module |
| CN204119616U (en) * | 2014-10-15 | 2015-01-21 | 立锜科技股份有限公司 | Light-emitting component driving chip |
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