CN104333418A - Display and communication dual-purpose visible light module - Google Patents
Display and communication dual-purpose visible light module Download PDFInfo
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- CN104333418A CN104333418A CN201410441505.1A CN201410441505A CN104333418A CN 104333418 A CN104333418 A CN 104333418A CN 201410441505 A CN201410441505 A CN 201410441505A CN 104333418 A CN104333418 A CN 104333418A
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Abstract
The invention discloses a display and communication dual-purpose visible light module. The display and communication dual-purpose visible light module comprises an LED (Light Emitting Diode) dual-purpose module, which is taken as a visible light display light source and a transmitting terminal of a communication system; an LED dual-purpose module display control circuit, which is positioned at one side of the back face of the LED dual-purpose module and is used for controlling an LED array to implement a display function; and an LED dual-purpose module optical communication transmitting terminal circuit, which is positioned at the other side of the back face of the LED dual-purpose module and is used for controlling the LED array to implement the function of an optical communication transmitting terminal. The display and communication dual-purpose visible light module fills up requirements on the multichannel transmitting terminals of a full color array of a light source with the tiny size in the visible light communication system, and provides research and development direction of a small fine-pitch LED high-definition display screen, which integrates communication functions and is highly integrated.
Description
Technical field
The present invention relates to display and the communications field, particularly relate to the visible ray module that a kind of display communication of visible LED array module is dual-purpose.
Background technology
Advocating today of energy-conserving and environment-protective low-carbon (LC) life, light-emitting diode (LED) is in an increasingly wide range of applications in illumination, display and the communications field.Visible light communication technology, no electromagnetic pollution high with its bandwidth, the fail safe of based semiconductor illumination be good, low in energy consumption, need not increase dedicated network and frequency license newly, have certain mobility and the advantage such as the energy saving standard that brings with semiconductor lighting combined together, by one of access way becoming network user terminals, and along with further developing of semiconductor illumination technique and day by day popularizing of semiconductor lighting, likely become the main access way of the network terminal.Thus, universal development promotion being responded fast Light-Emitting Diode (LED) and manufacture of visible light communication technology.
Equally, high definition Small Distance LED display is powerful, and the general high density display screen compared to market, has multinomial breakthrough advantage.Its maximum bright spot is the performance of low-light level, high gray scale and high refresh rate.The future market application prospect that high density Small Distance LED shows product is extensive, the Public places such as Large conference center, cinema, office building can not only be met to the demand of high-end big-screen TV, and huge potential of demand is also had in the professional application of the specific industries such as military affairs, public safety, the energy, traffic, broadcasting and TV, estimate that future products is sold and will occur explosive growth situation.
If above-mentioned LED display and communication function are combined, on one module integrated.This module can realize the high definition display of LED, also can form visible light communication system after increase receiver module simultaneously, realize LED polychrome multipath signal propagation function.
But, also do not have the highdensity LED module product of integrative display and the Small Distance of the two kinds of functions that communicate to occur at present.Reason can be summed up as following 2 points: one is that LED chip size is less and integrated level is higher, thus very high to the requirement of packaging technology and technology, and causing Small Distance LED display module to be still in development does not have finished product.Two is high-power monochrome or dual base color LED in the many uses of light source single or several in the visible light communication system of multidiameter delay, research for the full-color array module of small-power high density is few, thus for the VISIBLE LIGHT SYSTEM rare further investigation especially that high definition display and communication are combined.
Summary of the invention
In view of above-mentioned technical problem, the invention provides the visible ray module that a kind of display communication is dual-purpose, to fill up the demand for microsize light source full-color array multichannel transmitting terminal in visible light communication system, provide the research and development direction of the integrated small-sized micro-spacing LED high-definition display screen of the height that integrates communication function.
The invention provides the visible ray module that a kind of display communication is dual-purpose, comprising:
The dual-purpose module of one LED, as the transmitting terminal of visible ray display light source and communication system;
The dual-purpose module display control circuit of one LED, is positioned at the side of the dual-purpose module backside of LED, realizes the function of display for controlling LED array;
One LED dual-purpose module optical communication transmission terminal circuit, being positioned at the opposite side of the dual-purpose module backside of LED, realizing the function of optical communication transmission end for controlling LED array.
As can be seen from technique scheme, the dual-purpose visible ray module of display communication of the present invention has following beneficial effect:
(1) in LED display cell module, there is the full-color high definition display effect of minimum pixel spacing;
(2) the full-color display module preparation principle of little micro-spacing LED high definition in the present invention is simple, can use existing size LED chips, only require that special packaging technology can realize;
(3) the visible ray module that display communication of the present invention is dual-purpose, utilizes highly integrated control chip to realize the function of high definition display and data-signal transmission simultaneously; And modular structure is relatively simple, volume is relatively little, wide application, utilizes the different colours light signal launched to control receiving terminal device and operate accordingly.Be applicable to be arranged on various miniaturized electronics, as: Mp 3 player, electronic navigator or smart mobile phone are first-class, meet while people pursue for high definition display and realize the photocontrol of electronic equipment, the demand of optical communication; Display the play the functions such as picture, word, video;
(4) the display light source LED array power in the visible ray module that display communication of the present invention is dual-purpose is less, substantially without hot phenomenon, heat abstractor need not be installed and for showing with the function communicated time, also need not install LED lens additional and carry out luminous intensity distribution, save cost;
(5) the visible ray module that display communication of the present invention is dual-purpose is an independently system, replaces conveniently after damage, as long as take off the module that cannot normally work to change new module, the function not affecting equipment or instrument itself in Renewal process uses; And small modules of the present invention has very strong portability and practicality widely.
Accompanying drawing explanation
For making the object, technical solutions and advantages of the present invention clearly understand, below in conjunction with specific embodiment, and with reference to accompanying drawing, the present invention is described in more detail, wherein:
Figure 1A is the Facad structure schematic diagram according to the dual-purpose visible ray module of embodiment of the present invention LED display communication;
Figure 1B is the structure schematic diagram according to the dual-purpose visible ray module of embodiment of the present invention LED display communication; ;
In the structure that Fig. 2 A is the dual-purpose visible ray module of the display communication of LED shown in Figure 1B, display control circuit connects block diagram in detail;
In the structure that Fig. 2 B is the dual-purpose visible ray module of the display communication of LED shown in Figure 1B, optical communication transmission terminal circuit connects block diagram in detail;
Fig. 3 to form the schematic diagram of visible light communication system for the dual-purpose visible ray module of the display communication of LED shown in Figure 1A and Figure 1B as optical communication transmission end and receiving terminal element;
Embodiment
It should be noted that, in accompanying drawing or specification describe, similar or identical part all uses identical figure number.The implementation not illustrating in accompanying drawing or describe is form known to a person of ordinary skill in the art in art.In addition, although herein can providing package containing the demonstration of the parameter of particular value, should be appreciated that, parameter without the need to definitely equaling corresponding value, but can be similar to corresponding value in acceptable error margin or design constraint.The direction term mentioned in embodiment, such as " on ", D score, "front", "rear", "left", "right" etc., be only the direction with reference to accompanying drawing.Therefore, the direction term of use is used to illustrate and is not used for limiting the scope of the invention.
The function that the dual-purpose visible ray module of display communication of the present invention utilizes highly integrated control chip to realize high definition display and data-signal to transmit simultaneously; And module volume is relatively little, be applicable to be arranged on various miniaturized electronics; Structure is relatively simple, wide application, utilizes the different colours light signal launched to control receiving terminal device and carries out corresponding operation etc.
Refer to shown in Fig. 1-Fig. 3, the invention provides the visible ray module that a kind of display communication is dual-purpose, comprising:
The dual-purpose module 1 of one LED, is made up of PCB material or other high thermal conductive substrates, as the transmitting terminal of visible ray display light source and communication system;
The dual-purpose module display control circuit 2 of one LED, be positioned at the side at LED dual-purpose module 1 back side, the function of display is realized for controlling LED array 10, the light source of described LED array 10 is full-color RGBLED array of source, dual base color LED light source array or single primary light source array, forms with the arrangement of the chip matrix of any amount; The pixel interval of the light source of described LED array 10 is less than 1mm, the substrate of described LED array 10 is silica-based, sapphire or ceramic substrate, the electrode of LED chip, by conductive through hole technique, is connected with the electrode pads on PCB surface in the dual-purpose module 1 of described LED by surface;
Wherein, the dual-purpose module display control circuit 2 of described LED comprises:
Constant-current drive circuit 20, be arranged in the dual-purpose module display control circuit 2 of LED, its output is connected with port allotting unit 21, is continuously the dual-purpose module 1 of LED powers as constant-current source;
Port allotting unit 21, is arranged in the dual-purpose module display control circuit 2 of LED, is connected to the front end of LED array 10, plays the effect of connection that control circuit middle port mates with LED array 10 middle port, classification and arrangement;
Indicative control unit 22, be arranged in the dual-purpose module display control circuit 2 of LED equally, the output of indicative control unit 22 is connected to the input of constant-current drive circuit 20, and the signal controlling constant-current drive circuit 20 output can make LED array 10 show corresponding figure, word or simple image etc.;
One LED dual-purpose module optical communication transmission terminal circuit 3, is positioned at the opposite side at LED dual-purpose module 1 back side, realizes the function of optical communication transmission end, comprising for controlling LED array 10:
Interface unit 31, is arranged in LED dual-purpose module optical communication transmission terminal circuit 3, is connected to the front end of LED array 10, plays the effect of connection that optical communication control circuit middle port mates with LED array 10 middle port, classification and arrangement;
Modulation circuit 32, be arranged in LED dual-purpose module optical communication transmission terminal circuit 3 equally, the signal intercept that the output of modulation circuit 32 exports is to the input of drive circuit 30, and the signal controlling drive circuit 30 output can control LED array 10 and launch full-color, double-colored or monochromatic light signal;
Below respectively the present embodiment display is described in detail with each part of the visible ray module communicating dual-purpose.
The dual-purpose module 1 of LED
In the present embodiment, the dual-purpose module 1 of LED is the square substrate be made up of PCB material, and its front surface scribbles black glue and with solder joint, for forming effective electrical connection with the corresponding electrode position in the bottom of LED array 10.The use of black glue is conducive to the resolution improving LED display.Also there is corresponding solder joint at its back side, for being connected with the components and parts in LED dual-purpose module optical communication transmission terminal circuit 3 with LED dual-purpose module display control circuit 2, realizes display and the controlling functions communicated.
The described front surface of PCB material substrate and the electrical connection at the back side, by PCB substrate design technology, utilize inner cabling and via process to realize, this is PCB mask-making technology, and industry internal staff all know, and does not repeat them here.
LED array 10
LED array 10, as display and the dual-purpose light source that communicates, is arranged by small-power RGB (RGB) LED chip and forms, for pixel interval is less than the high definition array of display of 1mm.The array configuration of light source can be square matrix or rectangular array, can adjust according to the requirement of display application.
As shown in Figure 1A, the front of LED array 10 arranges three color chips respectively in blue (B) three positions of red (R) green (G), and P point is common anode limit.
In the present embodiment, the substrate of LED array 10 is silica-based, sapphire or ceramic substrate, and the electrode of LED chip, by conductive through hole technique, is connected with the electrode pads on PCB surface in the dual-purpose module 1 of described LED by surface.
Indicative control unit 22
Indicative control unit 22, is formed by display panel control circuit components and parts Combination Welding, realizes controlling LED array 10 and shows the functions such as corresponding high-definition image, word.Adopt 1/8 or 1/16 scan pattern, realize 256 grades of gray scales.
Port allotting unit 21
Port allotting unit 31, for the connection that LED dual-purpose module display control circuit 2 middle port mates with LED array 10 middle port, thus by corresponding with the input of indicative control unit 22 for the electrode of light source in LED array connection, each port to be carried out point other and independently controls.
Constant-current drive circuit 20
Constant-current drive circuit 20, for driving the light source in described LED array 10 to show corresponding image, word etc. according to the control signal of described indicative control unit 22.
Drive circuit 30
Drive circuit 30, for driving the light source in described LED array 10, and simultaneously or optionally launch the visible ray of red, green, blue according to the control signal of described modulation circuit 32.
Interface unit 31
Interface unit 31, for the connection that LED dual-purpose module optical communication transmission terminal circuit 3 middle port mates with LED array 10 middle port, thus by corresponding with the input of modulation circuit 32 for the electrode of light source in LED array connection;
Modulation circuit 32
Modulation circuit 32, adopts frequency modulation modulating mode or amplitude-modulating modulation pattern, inputs suitable bias current while adding modulation signal, to make in LED array 10 light source works in linear zone, thus makes the light signal of output undistorted.
In the present embodiment, the signal controlling constant-current drive circuit 20 that indicative control unit 22 sends exports accordingly, and is controlled respectively by the light source in port allotting unit 21 pairs of LED array 10, thus realizes full-color high definition Presentation Function.Meanwhile, the dual-purpose module of LED 1 issues optical signals in the control of LED dual-purpose module optical communication transmission terminal circuit 3, can realize optical communication capabilities.By transforming for the circuit at LED dual-purpose module 1 back side, while also can realizing high definition display, complete the function of transmission of visible light data.
Refer to shown in Fig. 3, Fig. 3 is one embodiment of the invention, and provide a kind of LED and show and the dual-purpose VISIBLE LIGHT SYSTEM that communicates, this system comprises:
The dual-purpose module 1 of LED, as the transmitting terminal of visible light communication system;
Visible ray receiving terminal element 4, as the receiving terminal of visible light communication system;
Wherein also comprise: photo-detector 40, be arranged in visible ray receiving terminal element 4, as the components and parts of light receiver, can be photodiode or integrated photodetector, can select according to application demand.
Described LED shows and communicates in dual-purpose VISIBLE LIGHT SYSTEM, visible ray receiving terminal element 4 is that mobile phone, palmtop PC, panel computer etc. have the miniaturized electronics being equipped with optical communication capabilities demand, and also can be refrigerator, television set, air-conditioning etc. has the household electrical appliance of Based Intelligent Control demand and each electronic product.
In the present embodiment, the dual-purpose module of LED 1 issues optical signals in the control of LED dual-purpose module optical communication transmission terminal circuit 3, be arranged on various optical receiving end element 4 as: the photo-detector 40 on mobile phone, palmtop PC etc. detects light signal, change into the corresponding signal of telecommunication, equipment is controlled, thus achieves the function of optical communication.
So far, by reference to the accompanying drawings two embodiments of the present invention have been described in detail.Describe according to above, those skilled in the art should have the dual-purpose visible ray module of LED display communication of the present invention and have clearly been familiar with.
In addition, the above-mentioned definition to each element and method is not limited in various concrete structures, shape or the mode mentioned in execution mode, those of ordinary skill in the art can replace it with knowing simply, such as: the function etc. changing the material of each components and parts in described display communication control circuit and the model adjustment control circuit of size or changing section components and parts; The components and parts of light receiver, can be photodiode or integrated photodetector, can select according to application demand; Equally, the LED array as display light source and communications transmit end also can select monochromatic LED, dual base color LED and single-chip all-colour LED etc.
In sum, the visible ray module that display communication of the present invention is dual-purpose, the function utilizing highly integrated control chip simultaneously to realize high definition display and data-signal to transmit, filled up for microsize light source full-color array multichannel transmitting terminal in visible light communication system demand, provide the research and development direction of the integrated small-sized micro-spacing LED high-definition display screen of the height that integrates communication function.This device is simple to operate, cost is low and practicality is comparatively strong, and module volume is relatively little, is applicable to be arranged on various miniaturized electronics; Utilize the different colours light signal launched to control receiving terminal device and carry out corresponding operation etc., applicable all kinds of LED related scientific research and enterprise use.
Above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. the visible ray module that display communication is dual-purpose, comprising:
The dual-purpose module of one LED, as the transmitting terminal of visible ray display light source and communication system;
The dual-purpose module display control circuit of one LED, is positioned at the side of the dual-purpose module backside of LED, realizes the function of display for controlling LED array;
One LED dual-purpose module optical communication transmission terminal circuit, being positioned at the opposite side of the dual-purpose module backside of LED, realizing the function of optical communication transmission end for controlling LED array.
2. the visible ray module that display communication according to claim 1 is dual-purpose, wherein the dual-purpose module of this LED is the square substrate be made up of PCB material, its front surface scribbles black glue and with solder joint, for forming effective electrical connection with the corresponding electrode position in the bottom of LED array, also there is corresponding solder joint at its back side, for being connected with the components and parts in LED dual-purpose module optical communication transmission terminal circuit with LED dual-purpose module display control circuit.
3. the visible ray module that display communication according to claim 1 is dual-purpose, the light source of wherein said LED array is full-color RGB LED light source array, dual base color LED light source array or single primary light source array.
4. the visible ray module that display communication according to claim 3 is dual-purpose, the pixel interval of the light source of wherein said LED array is less than 1mm.
5. the visible ray module that display communication according to claim 4 is dual-purpose, the substrate of wherein said LED array is silica-based, sapphire or ceramic substrate, the electrode of LED chip, by conductive through hole technique, is connected with the electrode pads on PCB surface in the dual-purpose module of described LED by surface.
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| CN201410441505.1A CN104333418A (en) | 2014-09-01 | 2014-09-01 | Display and communication dual-purpose visible light module |
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Cited By (12)
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| CN105185265A (en) * | 2015-10-27 | 2015-12-23 | 上海斐讯数据通信技术有限公司 | Electronic device, LED display screen applied to electronic device and wireless network transmission method |
| CN105276766A (en) * | 2015-10-30 | 2016-01-27 | 广东美的制冷设备有限公司 | Air conditioning system, control terminal, air conditioner and control method thereof |
| CN105812055A (en) * | 2016-03-30 | 2016-07-27 | 中国科学技术大学 | Half-duplex time divisionbidirectional visible light communication method and system of RGB LED module |
| CN105895654A (en) * | 2016-05-16 | 2016-08-24 | 华南师范大学 | Embedded illumination and communication dual-function LED device and manufacturing method thereof |
| CN106033999A (en) * | 2015-03-13 | 2016-10-19 | 力钜电子股份有限公司 | Method and system for achieving communication between mobile telephone and electronic equipment |
| CN106330313A (en) * | 2016-09-05 | 2017-01-11 | 京东方科技集团股份有限公司 | Cell aligning substrate, display panel and display device |
| CN108399885A (en) * | 2018-03-22 | 2018-08-14 | 京东方科技集团股份有限公司 | A kind of display device and display methods |
| CN109286438A (en) * | 2018-10-09 | 2019-01-29 | 苏州晶世达光电科技有限公司 | A kind of LED display communication module |
| CN109828524A (en) * | 2019-03-05 | 2019-05-31 | 朱高峰 | Programmable control system and method |
| CN111341808A (en) * | 2020-03-05 | 2020-06-26 | 京东方科技集团股份有限公司 | Display substrate, preparation method thereof and visible light communication device |
| CN112802833A (en) * | 2021-01-13 | 2021-05-14 | 河源市众拓光电科技有限公司 | Visible light communication array chip LED lamp pearl |
| WO2022127457A1 (en) * | 2020-12-18 | 2022-06-23 | 河源市众拓光电科技有限公司 | Led device for visible light communication |
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| CN106033999A (en) * | 2015-03-13 | 2016-10-19 | 力钜电子股份有限公司 | Method and system for achieving communication between mobile telephone and electronic equipment |
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| CN105276766A (en) * | 2015-10-30 | 2016-01-27 | 广东美的制冷设备有限公司 | Air conditioning system, control terminal, air conditioner and control method thereof |
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| CN109828524B (en) * | 2019-03-05 | 2020-11-10 | 朱高峰 | Programmable control system and method |
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| CN111341808A (en) * | 2020-03-05 | 2020-06-26 | 京东方科技集团股份有限公司 | Display substrate, preparation method thereof and visible light communication device |
| CN111341808B (en) * | 2020-03-05 | 2023-01-17 | 京东方科技集团股份有限公司 | Display substrate, preparation method thereof and visible light communication device |
| WO2022127457A1 (en) * | 2020-12-18 | 2022-06-23 | 河源市众拓光电科技有限公司 | Led device for visible light communication |
| CN112802833A (en) * | 2021-01-13 | 2021-05-14 | 河源市众拓光电科技有限公司 | Visible light communication array chip LED lamp pearl |
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Application publication date: 20150204 |