CN103700325A - Stereo-structure indoor transparent LED (light emitting diode) display screen - Google Patents
Stereo-structure indoor transparent LED (light emitting diode) display screen Download PDFInfo
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- CN103700325A CN103700325A CN201410005884.XA CN201410005884A CN103700325A CN 103700325 A CN103700325 A CN 103700325A CN 201410005884 A CN201410005884 A CN 201410005884A CN 103700325 A CN103700325 A CN 103700325A
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Abstract
The invention discloses a stereo-structure indoor transparent LED (light emitting diode) display screen. The LED display screen consists of a glass panel and a display screen component, wherein the glass panel covers the display screen component; the display screen component comprises an LED display module, a signal control board and a field effect high-current control switch module; the LED display module consists of multiple vertical-structure LED modules; multiple vertical-structure LED modules are horizontally arranged in equal space; each vertical-structure LED module comprises an LED lamp bead and a PCB (printed circuit board); the PCBs are vertically placed; multiple LED lamp beads are vertically welded on the PCBs; a notch is formed between every two LED lamp beads; multiple solid metal lines are arranged at each notch to electrically connect each vertical-structure LED module.
Description
Technical field
The present invention relates to LED lighting technical field, particularly a kind of indoor transparency LED display screen of spatial structure.
Background technology
Light emitting diode (LED) as the 4th generation light source, have energy-conservation, environmental protection, the advantage such as volume is little, and the life-span is long, be widely used at present pilot lamp, display board, liquid crystal display, and in all kinds of electric equipment productss such as ordinary luminaire, decorating lighting lamp, along with the development of new technology, its application will be further extensive.
At present, the application of transparency LED display screen is more and more extensive, in prior art, manufactures transparency LED display screen and faces following technical barrier:
More than (1) 50% transmittance
LED display, takies a large amount of metopes, utilizes transparent design, and LED display can be arranged on window, saves installation site.But this LED display must meet more than 50% transmittance, it is very large challenge.
(2) large electric current power supply
Because LED shows, must meet the display requirement in daytime and evening.Under environment, indoor LED wants every square metre of 50W-100W of power consumption by day.This power consumption represents that the LED electric current of 5V can reach 20 amperes, on design display panel, provides wire, meets 20A current requirements, is very large challenge.
(3) reliably produce
LED shows giant-screen, and quantity can be very not large, and size is multiple, and can reasonable price, utilizes automatic technology, reliably produce, and be a major challenge.
(4) integral installation
LED demonstration giant-screen big city installs together with glass, when separated LED display curtain, is transported to and shows grown place, and convenient installation, is a challenge.
Summary of the invention
For this reason, the technical problem to be solved in the present invention is: how to provide that a kind of transmittance is high, electric current power supply greatly, reliably produce and facilitate the LED display of integral installation.For this reason, the present invention proposes a kind of indoor transparency LED display screen of spatial structure, can eliminate fully one or more problem that restriction and defect due to prior art cause.
Additional advantages of the present invention, object and characteristic, a part will be elucidated in the following description, and another part will be significantly or be acquired from enforcement of the present invention by the investigation of the explanation to below for those of ordinary skill in the art.By the structure of pointing out especially in the instructions at word and claims and accompanying drawing, can realize and obtain the object of the invention and advantage.
The invention provides a kind of indoor transparency LED display screen of spatial structure, described LED display is comprised of face glass and display screen component, described face glass covers above described display screen component, it is characterized in that, described display screen component comprises LED display module, the large current-controlled switch module of signal controlling plate and field effect, described LED display module is comprised of the LED module of a plurality of vertical stratifications, the LED module of described a plurality of vertical stratifications is equally spaced horizontally, described in each, the LED module of a vertical stratification includes LED lamp pearl and pcb board, described pcb board is vertically placed, a plurality of described LED lamp pearls are vertically welded on described pcb board, between every two described LED lamp pearls, have recess, many solid wire is placed in respectively each indent, to be electrically connected to the LED module of each vertical stratification.
Preferably, described in each, the LED module of vertical stratification is measure-alike and be strip.
Preferably, the large current-controlled switch module of described signal controlling plate and field effect lays respectively at left side and the downside of described LED display module.
Preferably, the welding of the pcb board vertical butt joint in the LED module of described signal controlling plate and described vertical stratification.
Preferably, the large current-controlled switch module of described field effect and described solid metal wire bonding.
Preferably, described solid wire is large electric current copper conductor.
Beneficial effect of the present invention is:
(1) high grade of transparency-for example put apart from the indoor transparency LED display screen new design of the spatial structure of 8mm (P8), is applicable to the indoor high grade of transparency of 0.5mx2.0m and shows, glazed area 73%.
(2) large electric current-adopt solid all-metal conductor to connect, can pass through the large electric current of 20A, meets the large-area displays of 0.75mx3.0m.
(3) be applicable to the LED modules of batch production-all, by little PCB, combined, can independent test, be applicable to automatic batch production.
(4) convenient transportation installation-can be in the on-the-spot installation of glass production, convenient transportation.
Accompanying drawing explanation
Fig. 1 is according to the schematic diagram embodiment of the present invention, LED display module.
Fig. 2 is according to the schematic diagram of the LED module embodiment of the present invention, vertical stratification.
Fig. 3 is according to the combination schematic diagram embodiment of the present invention, LED screen.
Fig. 4 (a) and Fig. 4 (b) are according to the schematic diagram embodiment of the present invention, that utilize high-frequency distributed pulse control LDE display brightness.
Fig. 5 is according to the welding schematic diagram embodiment of the present invention, signal controlling plate and pcb board.
Fig. 6 is according to the welding schematic diagram embodiment of the present invention, the large current-controlled switch module of field effect and large electric current copper conductor.
Fig. 7 is the schematic diagram of assembling integral LED display screen.
Embodiment
With reference to the accompanying drawings the present invention is described more fully, exemplary embodiment of the present invention is wherein described.
The indoor transparency LED display screen of the spatial structure that the present invention proposes is comprised of face glass and display screen component, and wherein, described face glass covers above described display screen component.
According to one embodiment of present invention, described display screen component comprises the large current-controlled switch module of LED display module, signal controlling plate and field effect (MOSFET).As shown in Figure 1, described LED display module 1 is comprised of the LED module 2 of a plurality of vertical stratifications, described in each, the LED module 2 of vertical stratification is measure-alike and be strip, and in described LED display module 1, the LED module 2 of a plurality of described vertical stratifications is equally spaced horizontally.
Fig. 2 shows the schematic diagram of the LED module of vertical stratification.As shown in Figure 2, the LED module 2 of described vertical stratification comprises LED lamp pearl 21 and pcb board 22, and described pcb board 22 is vertically placed, and a plurality of described LED lamp pearls 21 are vertically welded on described pcb board 22, between every two described LED lamp pearls 21, has recess 23.The present invention utilizes vertical pcb board, the LED lamp bead weld of full-color SMD is connected on to the edge of plate, can effectively increase transmittance.
The transmittance of LED display is relevant with the spacing of LED lamp pearl, and the spacing of LED lamp pearl and the relation of transmittance are as shown in table 1:
The spacing of table 1LED lamp pearl and the relation between the transmittance of display screen
Those skilled in the art can adjust according to table 1 spacing of LED lamp pearl, thereby realize different transmittances.
Fig. 3 is according to the combination schematic diagram embodiment of the present invention, LED screen.As shown in Figure 3, the indoor transparency LED display screen of spatial structure provided by the invention comprises that face glass 3 and the display screen component consisting of LED display module 1, signal controlling plate 4, the large current-controlled switch module 5 of field effect (MOSFET) form, the large current-controlled switch module 5 of described signal controlling plate 4 and field effect (MOSFET) lays respectively at left side and the downside of described LED display module 1, many solid wire 6 is placed in respectively each indent, to be electrically connected to the LED module of each vertical stratification.The present invention, between pcb board, utilizes solid wire to be connected, and can effectively reduce resistance, facilitates the large electric current of 20A to pass through.
The present invention utilizes 4 pairs of LED display modules of signal controlling plate to control, and wherein, described signal controlling plate 4 utilizes high-frequency distributed pulse to control LDE demonstration, is described in detail below.
Fig. 4 (a) and Fig. 4 (b) are according to the schematic diagram embodiment of the present invention, that utilize high-frequency distributed pulse control LDE display brightness.
Can adopt conventional hardware circuit to produce high-frequency distributed pulse of the present invention, preferably, the present invention, by adopting the combination of hardware circuit single chip computer AT 89S52 and CPLD device EPM7128SLC84, produces the needed high-frequency distributed pulse of driving LED array of display of the present invention.
Single chip computer AT 89S52 and CPLD device EPM7128SLC84 are the conventional devices of those skilled in the art, at this, omitted the circuit connection diagram of this device and it is produced to the explanation of high-frequency distributed pulse.
As shown in Fig. 4 (a), wherein, the duration of horizontal ordinate indicating impulse, the clock control precision that the present invention chooses is 1/10000s, that is, the clock period is 1/10000s, wherein, and the number that the coordinate figure of horizontal ordinate is clock.
The first half of Fig. 4 (a) represents to scan R0, the line scanning pulse of the LED that R1 and R2 are capable, the latter half represents that respectively brightness degree is 256,128 and the column scan pulse of 1 o'clock, it should be noted that, Fig. 3 (a) be the exemplary brightness that drawn be 256, three column scan pulses of 128 and 1, but in fact,, for each line scanning pulse, every row have a corresponding column scan pulse.Wherein, only have level when the scanning impulse of the capable LED of R0-R2 for high, and the level of column scan pulse is while being low, corresponding LED just can be lit.By controlling the low level duration of column scan pulse, can control the brightness of the LED lighting.To be elaborated to this below.
As shown in Fig. 4 (a), the present invention adopts distributed pulse design, by high-frequency distributed pulse, produce circuit and produce high-frequency distributed pulse, described high-frequency distributed pulse is divided into line scanning pulse and column scan pulse, the pulse width of described line scanning pulse (, the duration of the high level of line scanning pulse) be a clock period, the described clock period is 0.0001 second.Utilize described line scanning pulse to line by line scan to described 3 * 4 LED array, wherein, the LED of scanning a line only needs a clock period, and scanning so whole 3 * 4 LED array needs: 3 * 0.0001 seconds=0.0003 second, and 3 clock period namely.By Fig. 3 (a), also can be found out, the recurrence interval of the line scanning pulse of the LED array of scanning 3 * 4 is 3 clock period, that is, and and 0.0003 second.
In the present invention, when utilizing described line scanning pulse to line by line scan to described 3 * 4 LED array, utilize described column scan pulse to carry out column scan to described 3 * 4 LED array; Wherein, when the level of certain line scanning pulse is high, and the level of certain column scan pulse is while being low, can light the LED corresponding to described certain row and certain row infall.By Fig. 4 (a), obviously can be found out, the starting of line scanning pulse and column scan impulsive synchronization scanned LED array.In the present invention, the low level duration of each column scan pulse is a clock period, by controlling the recurrence interval of column scan pulse, controls the brightness of the LED lighting.
As shown in Fig. 4 (a), for the brightest (, brightness degree is 256 grades) LED, at the level of each line scanning pulse, while being high, the level of the column scan pulse that this brightest LED is corresponding is low, and the low level of column scan pulse continues a clock period, that is to say, when this LED is arrived in each line scanning, be expert at scan period, this LED lights, so this LED is the brightest.By Fig. 4 (a), can be found out, for the brightest LED, the recurrence interval of its column scan pulse is 3 clock period.Due to the scanning completing every 0.0003 second once whole 3 * 4 LED array, and while scanning, this brightest LED is lit, so this brightest LED meeting per second probably has: 1/0.0003 ≈ 3333 times flashes at every turn.
With this, calculate, for the LED of half bright (that is, brightness degree is 128 grades), every the level of a line scanning pulse while being high, the level of the column scan pulse that this half bright LED is corresponding is low.By Fig. 4 (a), can be found out, for half bright LED, the recurrence interval of its column scan pulse is 6 clock period.Owing to often completing the scanning of the LED array of twice pair whole 3 * 4, this half bright LED is lit once, so this half bright LED meeting per second probably has: 1/0.0006 ≈ 1667 times flashes.
Hence one can see that, by controlling the recurrence interval of column scan pulse, can control the LED of various different brightness.In addition, from Fig. 4 (b), the clock period of the LED of (that is, brightness degree is 1) that brightness degree is minimum is: 256 * 3=768.That is to say, every 768 clock period, this LED is just lit once, so the brightness of this LED is minimum, the minimum LED number of times flashing per second of this brightness is: 1/768 * 0.0001 ≈ 13 times.
That is to say, by adopting technical scheme of the present invention, to only have the minimum LED of brightness just can per secondly flash 13 times, because the LED that flashes 13 times per second is the darkest LED in whole LED array, therefore, can not cause that human eye has uncomfortable sensation.
Pcb board vertical butt joint welding in the LED module of signal controlling plate of the present invention and vertical stratification, as shown in Figure 5, wherein, 41 is the vertical butt joint solder joint between signal controlling plate 4 and pcb board 22.The present invention adopts high-speed special chip, to each LEDs, accomplishes pulse width regulation and control and pulse number regulation and control simultaneously, meets the full-color color of RGB and controls requirement.
Pcb board vertical butt joint welding in the LED module of signal controlling plate of the present invention and vertical stratification, as shown in Figure 5, wherein, 41 is the vertical butt joint solder joint between signal controlling plate 4 and pcb board 22.
Fig. 6 is according to the welding schematic diagram embodiment of the present invention, the large current-controlled switch module of field effect and solid wire.As shown in Figure 6, wherein, 51 is the solder joint between the large current-controlled switch module 5 of field effect and solid wire 6.MOSFET contactor is the known technology of this area, at this, its concrete principle of work and circuit structure is repeated no more.
Preferably, solid wire of the present invention is large electric current copper conductor.
The present invention utilizes field effect (MOSFE) semiconductor switch, to 20A electric current, does more than 10000 control per second, makes LED can produce the effect of full-color many GTGs.Utilize three-dimensional mode, with copper conductor, vertical LED circuit board is assembled mutually, then be attached to transparent on glassly, just become transparency LED and show.When LED extinguishes, can there is transparent effect.When LED lights, become full color display.Suitably adjust LED brightness, can control translucent display screen in various degree.
Fig. 7 is the schematic diagram of assembling integral LED display screen.As shown in Figure 7, the indoor transparency LED display screen of spatial structure provided by the present invention is comprised of face glass 3 and display screen component 7.
The present invention is applicable to 0.25mx1.0m; The indoor display screen design of 0.5mx2.0m or 0.73mx3m size, can meet most indoor transparent demonstration needs.
Above content is only preferred embodiment of the present invention, for those of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, and this description should not be construed as limitation of the present invention.
Claims (6)
1. the indoor transparency LED display screen of a spatial structure, described LED display is comprised of face glass and display screen component, described face glass covers above described display screen component, it is characterized in that, described display screen component comprises LED display module, the large current-controlled switch module of signal controlling plate and field effect, described LED display module is comprised of the LED module of a plurality of vertical stratifications, the LED module of described a plurality of vertical stratifications is equally spaced horizontally, described in each, the LED module of a vertical stratification includes LED lamp pearl and pcb board, described pcb board is vertically placed, a plurality of described LED lamp pearls are vertically welded on described pcb board, between every two described LED lamp pearls, have recess, many solid wire is placed in respectively each indent, to be electrically connected to the LED module of each vertical stratification.
2. the indoor transparency LED display screen of spatial structure according to claim 1, is characterized in that, described in each, the LED module of vertical stratification is measure-alike and be strip.
3. the indoor transparency LED display screen of spatial structure according to claim 1, is characterized in that, the large current-controlled switch module of described signal controlling plate and field effect lays respectively at left side and the downside of described LED display module.
4. the indoor transparency LED display screen of spatial structure according to claim 1, is characterized in that, the pcb board vertical butt joint welding in the LED module of described signal controlling plate and described vertical stratification.
5. the indoor transparency LED display screen of spatial structure according to claim 1, is characterized in that, the large current-controlled switch module of described field effect and described solid metal wire bonding.
6. the indoor transparency LED display screen of spatial structure according to claim 5, is characterized in that, described solid wire is large electric current copper conductor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410005884.XA CN103700325A (en) | 2014-01-07 | 2014-01-07 | Stereo-structure indoor transparent LED (light emitting diode) display screen |
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| CN201410005884.XA CN103700325A (en) | 2014-01-07 | 2014-01-07 | Stereo-structure indoor transparent LED (light emitting diode) display screen |
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| WO2016101899A1 (en) * | 2014-12-24 | 2016-06-30 | 深圳市晶泓达光电工程技术有限公司 | Led display module and method of fabricating same |
| WO2016176900A1 (en) * | 2015-05-05 | 2016-11-10 | 深圳市壹品光电有限公司 | Led display screen |
| CN111292696A (en) * | 2020-02-27 | 2020-06-16 | 深圳市华星光电半导体显示技术有限公司 | GOA driving circuit, GOA array substrate, display panel and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2016101899A1 (en) * | 2014-12-24 | 2016-06-30 | 深圳市晶泓达光电工程技术有限公司 | Led display module and method of fabricating same |
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Application publication date: 20140402 |