CN102339567A

CN102339567A - LED electric lighting board and its driving method

Info

Publication number: CN102339567A
Application number: CN2011100510138A
Authority: CN
Inventors: 金载乙
Original assignee: DAE HAN ULTRAVISION Co
Current assignee: DAE HAN ULTRAVISION Co
Priority date: 2010-07-19
Filing date: 2011-03-03
Publication date: 2012-02-01
Anticipated expiration: 2031-03-03
Also published as: KR100992383B1; CN102339567B

Abstract

The invention discloses an LED electric lighting board for driving a plurality of LED elements in a dynamic driving way, comprising an LED module, wherein the LED module is divided and a LED element is arranged, thus m*n LED elements are arranged in each area, m, n are natural numbers larger than 2; a controller for generating a selection control signal, thus each area is simultaneously electrically connected with any LED element; m*n selectors connected with one LED element in each area to response to the selection control signal and simultaneously electrically connected with the connected LED elements in 1/(m*n) period; an active circuit for supplying driving data to the LED elements electrically connected with the selector.

Description

LED luminous plate and driving method thereof

Technical field

The present invention relates to a kind of LED luminous plate and driving method thereof, particularly a kind of LED luminous plate and driving method thereof of scintillation that can minimizes dynamic driving LED luminous plate.

Background technology

The outdoor luminous plate of prior art is installed on roof or the exterior wall etc. with large-scale state for advertising results etc.

The kind of outdoor luminous plate has light emitting diode (Light Emitting Diode; Below be called " LED ") luminous plate, FDT (Fluorescent Discharge Tube; Fluorescence discharging tube) luminous plate, CRT (Cathode Ray Tube; Cathode-ray tube (CRT)) luminous plate and LCD (Liquid Crystal Display, LCD) luminous plate etc.

The FDT luminous plate is as the luminous plate of fluorescence discharge form, and manufacturing cost is high, and difficult management is seldom used recently; The CRT luminous plate is as the luminous plate of cathodic discharge form, and the same manufacturing cost with the FDT luminous plate is high, and weight is big, less uses.On the other hand, the LCD luminous plate though extensively be utilized, still not only need high manufacturing cost, and the formation large is also had any problem as the luminous plate that uses the liquid crystal material at present.

On the contrary, the LED luminous plate is the luminous plate that utilizes LED, and manufacturing cost is low, and is manageable, not only the life-span long, large is also easy, in outdoor luminous plate, occupies the high share more than 90%.And the luminous LED of LED luminous plate use self, so have the advantage that power consumption is little, response speed is very fast.

The type of drive of this LED luminous plate is divided into static state (Static) type of drive and dynamic (Dynamic) type of drive.

The static drive mode on each LED element by disposing source circuit at 1: 1; When the formation of LED element comprises a plurality of LED unit element; On each unit element by disposing source circuit at 1: 1; Because through lighting of relevant active circuit each LED element of control or each LED unit element, so, has the advantage that can not produce the interference tones signal than being easier to control.But, because must possess the active circuit that has with LED element or the same quantity of LED unit element, its formation can only be complicated, so have the high shortcoming of manufacturing cost.

On the contrary, the dynamic driving mode is that the LED element is laterally perhaps vertically made up, and each group all disposes source circuit, and presses configuration sequence through selector switch and select LED group, and each LED group is lighted successively.

That is, the dynamic driving mode is the mode of lighting behind the LED luminous plate entire scan one-period, compared with the static drive mode; The active circuit that does not need too many quantity; So manufacturing cost is low, because of only lighting selected LED group successively, so have the advantage of saving power consumption; But in the short period, light all LED successively, so has the problem that produces scintillation.

During through camera LED luminous plate, the result that the black periodic line also is this scintillation appears.

Fig. 1 is the synoptic diagram of LED luminous plate of dynamic driving mode in the expression prior art, and the example in 1/16 cycle of lighting after LED element 10 is selected 16 row with the form configuration of dot matrix and in one-period successively is shown.

With reference to Fig. 1, in the dynamic drive method of prior art, LED element 10 is selected through selector switch portion 20 with behavior unit, to the position of respectively itemizing of LED element 10 driving data is provided through active circuit portion 30.

At this moment, selector switch portion 20 comprises 16 selector switchs that are connected with each row, and 30 in active circuit portion comprises 16 active circuits that are connected with each row.

That is, in the dynamic driving mode of prior art, when selector switch portion 20 selected LED element 10 successively, the driving data of active circuit portion 30 offered selected LED element 10.

Therefore, the LED luminous plate of dynamic driving mode in the prior art, its shape is the closer to maximization, and the travel distance that the one-period domestic demand will be lighted is then big more, and is serious thereby scintillation can only become.

Summary of the invention

Propose the present invention in order to improve the problems referred to above, purpose is to provide a kind of thorough shortening to light travel distance, minimizes the LED luminous plate and the driving method thereof of the dynamic driving mode of scintillation.

To achieve these goals, the LED luminous plate of one embodiment of the invention comprises as the LED luminous plate that drives a plurality of LED elements with the dynamic driving mode:

Led module, partition is equipped with said LED element above that, makes each zone possess m * n LED element, and wherein, m, n are the natural number more than 2;

Control part, it produces selects control signal, and each said zone is electrically connected to any LED element simultaneously;

M * n selector switch, each is connected with a LED element in each said zone for it,, makes 1/ that (the LED element that m * n) was connected in the cycle is electrically connected simultaneously in response to said selection control signal; And

Active circuit provides driving data to the LED element that is electrically connected said selector switch.

Above-mentioned each selector switch is per 1/ in one-period, and (cycle of m * n), just work was once.

Above-mentioned control part produces above-mentioned selection control signal, makes the interior LED element in above-mentioned each zone be electrically connected and light by configuration sequence.

Above-mentioned control part produces above-mentioned selection control signal, makes the interior LED element in said each zone be electrically connected brokenly and light.

Above-mentioned control part produces above-mentioned selection control signal, make in above-mentioned each zone LED element by in a zigzag or contrary configuration sequence in a zigzag be electrically connected and light.

Above-mentioned control part produces above-mentioned selection control signal, makes the order of lighting of LED element in above-mentioned each zone have cyclical variation.

Above-mentioned LED element constitutes and comprises: at least one red LED unit element, at least one green LED unit element and at least one blue led unit element.

LED luminous plate according to other embodiments of the invention comprises:

Led module disposes a plurality of LED elements above that, and the formation of LED element comprises x LED unit element, and wherein, x is the natural number more than 2;

Control part, it produces selects control signal, and each zone is electrically connected any LED element simultaneously;

X selector switch, each is connected with a LED element in each said zone for it, in response to said selection control signal, at 1/x the LED element that is connected is electrically connected simultaneously; And

Active circuit according to said selector switch, provides driving data to the LED element that is electrically connected.

Above-mentioned control part produces said selection control signal, and the interior LED unit element in said each zone is lighted or irregular lighting by configuration sequence.

According to the driving method of the LED luminous plate of the embodiment of the invention, wherein in said LED luminous plate, cut apart a plurality of LED elements of configuration, make each zone that m * n LED element arranged, m, n are the natural number more than 2, said method comprising the steps of:

Produce and select control signal, it makes each said zone be electrically connected simultaneously any LED element;

Through each m * n selector switch that is connected with a LED element,, in each said zone, in the cycle LED element is electrically connected simultaneously at 1/x in response to said selection control signal in each said zone; And

According to said selector switch, driving data is provided to the LED element that is electrically connected.

In the driving method of above-mentioned LED luminous plate, produce above-mentioned selection control signal, make the interior LED element in above-mentioned each zone by being electrically connected and lighting by configuration sequence.

In the driving method of above-mentioned LED luminous plate, produce above-mentioned selection control signal, make the interior LED element in above-mentioned each zone be electrically connected brokenly and light.

According to the present invention, the LED element is carried out division driving by the zone, each zone has a LED element to light simultaneously/extinguish, and has shortened and has lighted travel distance and area in the one-period, thereby had the effect that significantly reduces scintillation.

Meanwhile, according to the present invention, periodically the LED element in each zone of irregular change light order, the prediction through systematicness is repeatedly lighted can minimize the scintillation through the eyes perception.

Moreover, according to the present invention, when the unit LED element of a plurality of colors constitutes microprocessor; Give a zone to a microprocessor LED element; In the zone, light in order, so even the dynamic driving mode also has through the static actual effect of naked eyes perception.

Description of drawings

Fig. 1 is the accompanying drawing of the LED luminous plate of type of drive in the expression prior art;

Fig. 2 a, 2b, 2c are the accompanying drawings according to the LED luminous plate of the dynamic driving mode of the embodiment of the invention;

Fig. 3 a and Fig. 3 b are the accompanying drawings of the configuration example of each color of expression LED element;

Fig. 4 a and Fig. 4 b are the accompanying drawings that the LED element is lighted the order example in the expression zone;

Fig. 5 a and Fig. 5 b are that expression is by zigzag, the contrary accompanying drawing of lighting order in a zigzag;

Fig. 6 is the accompanying drawing of expression dynamic driving mode of other embodiment according to the present invention.

Embodiment

Except above-mentioned purpose, can understand the object of the invention and advantage better with reference to the detailed description and the accompanying drawing of the preferred embodiment of the invention.

Below, through specifying the preferred embodiment of the invention with reference to Fig. 2 a to Fig. 6.

At first; The term or the vocabulary that use in this instructions and claims can not be interpreted as the meaning on normally used or the dictionary; The inventor is to the invention of oneself; For the method with the best describes,, should be interpreted as and meet technical thought of the present invention and notion in line with the suitable principle of definition term notion.Therefore; Illustrated formation is the most preferred embodiment of the present invention on embodiment that puts down in writing in this instructions and the accompanying drawing; And can not replace the technical thought of the present invention, so, be interpreted as having the various analogues and the version that can replace these for the application's time point.

Fig. 2 a is the accompanying drawing of expression according to the LED luminous plate of the embodiment of the invention.

Among Fig. 2 a, comprise led module 100, selector switch portion 200 and active circuit portion 300 according to the LED luminous plate of the embodiment of the invention.

At first, led module 100 is made up of with the configuration of dot matrix (Dot Matrix) form a plurality of LED elements 110, LED element 110 division driving, and making has horizontal 4 zones and vertical 4 zones.

Here, the quantity of the LED element 110 that in led module 100, is disposed and divided region quantity can constitute with various states as required.

Among Fig. 2 a, led module 100 is configured by 16 * 16 form, LED element 110 can by horizontal 4, vertical 4 totally 16 area L 1～L16 cut apart.

The cut zone L1 of illustrated led module 100 among Fig. 2 a～L16 simple table is shown on Fig. 2 b, and Fig. 2 c understands in order to help, the accompanying drawing that first area L1 and selector switch 201～216, first active circuit 301 are constructed among illustrated area L 1～L16 among the presentation graphs 2a.

Selector switch portion 200 is included in each selector switch 201～216 that are connected jointly with a LED element 110 of each zone.

Therefore, the quantity of selector switch 201～216 should be the quantity that is included in a LED element 110 in the zone, among Fig. 2 a, comprises 16 LED elements 110 in each area L 1～L16, so prepare to have 16 selector switchs 201～216 altogether.

At this moment, the LED element 110 that is connected with each selector switch 201～216 can not repeat to be connected with other selector switchs 201～216.

For example, first selector 201 will be connected with the LED element D1 of each area L 1～L16 jointly, and second selector 202 is connected with the 2nd LED element D2 of each area L 1～L16 jointly.

This selector switch 201～216 is made up of switch structure, and control is electrically connected with LED element 110.Here, electrical connection refers to, if prepare to have the charged guiding path of LED element 110, according to the driving data that active circuit 301～316 provides, LED element 110 can be lighted.

That is,, in the LED of each area L 1～L16 element D1～D16, select the LED element that to light through the work of selector switch 201～216.

Like Fig. 2 a, first selector 201 is electrically connected a LED element D1 who is connected with oneself among LED element D1～D16 of each area L 1～L16 simultaneously.Identical therewith, second selector 202 is electrically connected the 2nd LED element D2 among LED element D1～D16 of each area L 1～L16 simultaneously.

Among the present invention, can possess the control part 400 that produces the selection control signal, the running of its each selector switch 201～216 of control.

Control part 400 produces selects control signals also to be provided to selector switch 201～216, said selection control signal as in the running selector switch 201～216 any so that the signal that any LED element 110 is electrically connected simultaneously in every area L 1～L16.

At this moment, select control signal that each selector switch 201～216 per 1/16 cycle in one-period is just worked once, make all LED element D1～D16 of each area L 1～L16 in the one-period all be selected once and light.

Therefore, based on the job order of the selector switch 201～216 of this selection control signal, determine the order of lighting of LED element D1～D16 in each area L 1～L16.

This control part 400 can be independent of selector switch portion 200 and form, and also can be integrated in the selector switch portion 200.

On the other hand, active circuit portion 300 comprises a plurality of active circuits 301～316 that connect by each area L 1～L16.

That is, each active circuit 301～316 is connected in the led module 100 and each area L 1～L16 arranged in pairs or groups by 1: 1 and be configured in the LED element D1～D16 in area L 1～L16, and driving data is provided.

Among Fig. 2 a, led module 100 is divided into 16 area L 1～L16, prepares to have 16 active circuits 301～316 altogether.

On concrete, among the LED element D1～D16 in each area L 1～L16, when the LED element having been selected by selector switch 201～216 to light, each active circuit 301～316 provides the associated drives data to each selected LED element, makes it to light.

Among the picture embodiment of this Fig. 2 a; The quantity of cut zone is 16 altogether; 16 selector switchs 201～206 are according to selecting control signal to select the LED element D1～D16 that will light in the one-period; 16 active circuits 301～316 provide driving data to selected LED element, and the LED luminous plate is finally driven in 1/16 cycle.

That is, according to the quantity decision drive cycle of cut zone, the cycle at this moment becomes " 1/ cut zone quantity " among the present invention.

According to the dynamic driving mode of Fig. 1 prior art, in the one-period LED element 10 is lighted with behavior unit simultaneously in the LED luminous plate, so its travel distance will reach 16 row.

But, according to the present invention in Fig. 2 a, light when segmenting by region, the travel distance in the one-period has only 4 row.

Therefore, with regard to the LED luminous plate shown in Fig. 2 a, shown in final Fig. 2 b, with respect to Fig. 1, the travel distance anyhow in the one-period is reduced to 1/4.

Therefore, according to the present invention, even the LED luminous plate, has and compares the effect that the prior art scintillation significantly reduces because of Region Segmentation drives from as the luminous plate that maximizes.

With regard to the LED luminous plate of dynamic driving mode in the prior art,, need 16 selector switchs and 16 active circuits if drive by 1/16 cycle.But, also as the prior art of foregoing, need to use 16 selector switchs, 16 active circuits to drive by 1/16 cycle, but be reduced to 1/4 according to LED luminous plate of the present invention compared with the prior art travel distance.

On the other hand, according to prior art, when lighting simultaneously with behavior unit, go up 16 LED elements of configuration because of row, the time of running will postpone, so 16 * 16=256 LED element should be lighted in order.

But, according to the present invention, have only interior 4 * 4=16 the LED element in each zone to light in order, the area of advancing is reduced to 1/16.

That is, according to the present invention, additional formation, also energy minimization scintillation on the LED luminous plate of the dynamic driving mode of prior art.

Fig. 3 a is LED arrangements of components figure according to an embodiment of the invention, is configured separately by color for each LED element 110, for example red LED element R, green LED element G, blue-led element B is configured with a LED element 110 separately.

Fig. 3 b is the LED arrangements of components figure according to the embodiment of the invention, and it constitutes a LED element 110 and comprises all red LED unit element R, green LED unit element G, blue led unit element.

That is,, finally become the LED unit element R, G, the B that select 3 colors such as redness, green, blueness simultaneously even select a LED element 110 through selector switch 201～216.

At this moment, active circuit 301～316 provides driving data separately to these LED elements R, G, B through path separately certainly.

Therefore, with regard to Fig. 3 a, for a shiny red, green and blue-led element R, G, B; The travel distance that needs w1; But with regard to Fig. 3 b, redness, green and blue-led element R, G, B are made up of a microprocessor element, so travel distance can foreshorten to w1/3.

According to one embodiment of present invention; Control part 400 is lighted when order each selector switch 201～216 of control; LED element 110 is electrically connected and lights by configuration sequence in each area L 1～L16 in order to make; Produce to select control signal, also can be under the situation of not considering configuration sequence for irregular electrical connection and light and produce the selection control signal.

That is, show that control part 400 can be through selecting control signal, LED element 110 is lighted by configuration sequence, perhaps as Fig. 4 b demonstration, do not consider configuration sequence, light brokenly like Fig. 4 a.

Irregular can be embodied in according in a zigzag, interference in a zigzag contrary or the mess code table specifies, various forms such as appointment at random.But, light in the one-period once, then can use any way if all LED elements that each zone is interior are controlled to.

According to other embodiments of the invention, control part 400 can produce the selection control signal, makes the generating period property variation in proper order of lighting of the interior LED element 110 of each area L 1～L16.

Fig. 5 a and Fig. 5 b represent to light example in proper order in a zigzag and against the zigzag mode.

When making in this way, interimly light LED element 110 in proper order by the same zigzag of Fig. 5 a in the last week.Therefore can light LED element 110 by the contrary order in a zigzag that shows like Fig. 5 b in following one-period.

Fig. 6 is the accompanying drawing of other embodiment of expression the present invention, and the example that under the situation that red LED unit element R, green LED unit element G, blue led unit element B are constituted by microprocessorization ground, can be suitable for has been described.

Among the embodiment of Fig. 2 a, each the LED element 110 in the led module 100 is carried out combination and carried out Region Segmentation, among the embodiment of opposite Fig. 6, a LED element 121,122 has been regarded as a zone.

At length; The mode that the embodiment of Fig. 2 a lights through first selector 201 for the for example LED element D1 of each area L 1～L16 simultaneously; But, light after any is selected simultaneously in the LED unit element that comprises in any and other LED elements 121,122 in the LED unit element that in microprocessor LED element 121,122, comprises according to the embodiment of Fig. 6.

And the same with the embodiment of Fig. 2 a, LED unit element R, G, B light once in one-period through the selector switch 221,222,223 that is connected with oneself in each LED element 121,122.

For example, can be electrically connected simultaneously and light according to the red LED unit element R of first selector 221, the one LED elements 121 and the red LED unit element R of the 2nd LED element 122.

At this moment; Active circuit 321,322 is also the same with Fig. 2 a; All to dispose in each zone; So respectively dispose an active circuit 321,322 according to a LED element (121,122) that is regarded as a zone among the embodiment of Fig. 6, to the LED unit element R, G, the B that are electrically connected according to selector switch 221,222,223 driving data is provided, make charged LED unit element begin to light.

Generally speaking, microprocessor LED element is through the glow color process that color is referred and synthesized in element of the versicolor LED unit element that comprises in the element, final colour developing.

Therefore, even in a microprocessor LED element, light the LED unit element successively, also be lighting of carrying out in a short period of time, so with the naked eye can only perception finally develop the color, can not perception microprocessor LED element internal light successively.

That is, in the static mode of prior art, though according to unit element; Possess active circuit, but among the embodiment of Fig. 6, according to static mode; Active circuit quantity is reduced to 1/3, and opposite perception travel distance is 0, thereby can obtain in fact the same with static mode effect.

On the other hand; Among the embodiment of Fig. 6; The example that respectively disposes a red LED unit element R, green LED unit element G and blue led unit element B in the LED element 121,122 has been described, but in addition microprocessor LED element can comprise the LED unit element of additional color more, at this moment; According to the additional LEDs unit element; Preparation has additional selector switch and active circuit, and microprocessor LED element is constituted by the LED unit element of other colors under other situation, also prepares to have selector switch and active circuit thereby constitute according to it.

Simultaneously; According to the front with reference in the one-period of Fig. 2 a embodiment explanation successively lighting mode or irregular lighting mode, or in one-period, light LED unit element or irregular lighting mode successively by configuration sequence according to the selection control signal that control part 420 produces, be applicable to the embodiment of Fig. 6.

Through the content of above explanation, to those skilled in the art, in the scope that does not break away from technological thought of the present invention, can carry out various changes and modification.Therefore, technical scope of the present invention can not be defined as the detailed description of putting down in writing in the instructions, should stipulate within the scope of the claims.

Claims

1. LED luminous plate, it drives a plurality of LED elements with the dynamic driving mode, it is characterized in that, comprising:

Led module, partition is equipped with said LED element on said led module, makes each zone possess m * n LED element, and wherein, m, n are the natural number more than 2;

Control part, said control part produce selects control signal, and each said zone is electrically connected any LED element simultaneously;

Each is connected with a LED element in each said zone for m * n selector switch, said selector switch, in response to said selection control signal, at 1/ (m * n) in the cycle LED element that is connected is electrically connected simultaneously; And

Active circuit, said active circuit provides driving data to each the LED element that is electrically connected through said selector switch.

2. LED luminous plate according to claim 1 is characterized in that, each said selector switch is per 1/ in one-period, and (cycle of m * n), just work was once.

3. LED luminous plate according to claim 1 is characterized in that, said control part produces said selection control signal, makes in each said zone each LED element be electrically connected and light by configuration sequence.

4. LED luminous plate according to claim 1 is characterized in that, said control part produces said selection control signal, makes that each LED element is electrically connected brokenly and lights in each said zone.

5. LED luminous plate according to claim 1 is characterized in that, said control part produces said selection control signal, make in each said zone each LED element by in a zigzag or contrary configuration sequence in a zigzag be electrically connected and light.

6. according to claim 4 or 5 described LED luminous plates, it is characterized in that said control part produces said selection control signal, the order of lighting of each LED element in each said zone was changed with respect to each cycle.

7. LED luminous plate according to claim 1 is characterized in that, said LED element comprises at least one red LED unit element, at least one green LED unit element and at least one blue led unit element.

8. LED luminous plate comprises:

Led module disposes a plurality of LED elements on said led module, the formation of LED element comprises x LED unit element, and wherein, x is the natural number more than 2;

Control part, said control part produce selects control signal, and each zone is electrically connected any LED element simultaneously;

Each is connected with a LED element in each said zone for x selector switch, said selector switch, in response to said selection control signal, at 1/x the LED element that is connected is electrically connected simultaneously; And

Active circuit, said active circuit provides driving data according to said selector switch to each the LED element that is electrically connected through said selector switch.

9. LED luminous plate according to claim 8 is characterized in that, said control part produces said selection control signal, and interior each the LED unit element of each said LED element is lighted or irregular lighting in order.

10. the driving method of a LED luminous plate is wherein cut apart a plurality of LED elements of configuration in said LED luminous plate, makes each zone that m * n LED element arranged, and m, n are the natural number more than 2, it is characterized in that, said method comprising the steps of:

Produce and select control signal, each said zone is electrically connected any LED element simultaneously;

Through each m * n selector switch that is connected with a LED element in each said zone, in response to said selection control signal, each 1/x makes the LED element be electrically connected simultaneously in the cycle in each said zone; And

11. the driving method of LED luminous plate according to claim 10 is characterized in that, produces said selection control signal, makes in each said zone each LED element be electrically connected and light by configuration sequence.

12. the driving method of LED luminous plate according to claim 10 is characterized in that, produces said selection control signal, makes in each said zone the irregular electrical connection of each LED element and lights.