CN215680713U - LED packaging body, display device, lamp and lighting system - Google Patents

Abstract

The application discloses an LED packaging body, a display device, a lamp and a lighting system, which comprises a substrate, a control unit and an LED light-emitting unit, wherein the substrate comprises a power supply terminal, a grounding terminal, a signal input terminal, a signal output terminal and a test terminal; the input end of the control unit is electrically connected with the signal input terminal, the drive end of the control unit, the cathode of the LED light-emitting unit and the test terminal are electrically connected together, the output end of the control unit is electrically connected with the signal output terminal, the grounding end of the control unit is electrically connected with the grounding terminal, and the anode of the LED light-emitting unit is electrically connected with the power supply terminal. By arranging the test terminal and the power supply terminal on the substrate of the LED package, after the control unit and the LED light-emitting unit are packaged on the substrate, parameters such as reverse breakdown voltage and leakage current of the LED light-emitting unit can be tested by applying forward voltage to the test terminal and connecting the power supply terminal to a power ground.

Description

LED packaging body, display device, lamp and lighting system

Technical Field

The application belongs to the technical field of photoelectricity, and particularly relates to an LED packaging body, a display device, a lamp and a lighting system.

Background

As a commonly used light emitting device, a light-emitting diode (LED) has been widely used in the technical fields of illumination or information display. In the prior art, a programmable control unit is embedded in an LED package to implement functions such as single-point control or independent addressing of a single LED package.

The conventional LED package has an LED light emitting chip and a control unit for driving and controlling the LED light emitting chip integrated therein, and the conventional LED package has only a power supply terminal, a ground terminal, a signal input terminal, and a signal output terminal as its pins when packaged. In the LED packaging body, the cathode of the LED light-emitting chip is electrically connected with the driving end of the control unit, and the anode of the LED light-emitting chip is electrically connected with the power supply terminal, so that the packaged LED packaging body can only test the characteristics of the LED light-emitting chip such as forward conduction, reverse cut-off and the like, and cannot test parameters of the LED light-emitting chip such as reverse breakdown voltage, leakage current and the like.

SUMMERY OF THE UTILITY MODEL

The application aims to provide an LED packaging body, and aims to solve the problem that the traditional LED packaging body cannot test parameters such as reverse breakdown voltage and leakage current of an LED light-emitting chip after packaging.

A first aspect of an embodiment of the present application provides an LED package, including: the LED light-emitting module comprises a substrate, a control unit and an LED light-emitting unit, wherein the substrate comprises a power supply terminal, a grounding terminal, a signal input terminal and a signal output terminal, and the substrate further comprises a test terminal;

the input end of the control unit is electrically connected with the signal input terminal, the drive end of the control unit, the cathode of the LED light-emitting unit and the test terminal are electrically connected in common, the output end of the control unit is electrically connected with the signal output terminal, the ground end of the control unit is electrically connected with the ground terminal, and the power supply end of the control unit, the anode of the LED light-emitting unit and the power supply terminal are electrically connected in common;

the control unit and the LED light-emitting unit are arranged on the substrate, and the power supply terminal, the grounding terminal, the signal input terminal, the signal output terminal and the test terminal are all used as pins for electrically connecting the LED packaging body with the outside.

In one embodiment, the LED lighting unit includes one or more LED lighting chips, the number of the test terminals is the same as the number of the LED lighting chips, and the number of the driving terminals of the control unit is the same as the number of the LED lighting chips;

and the negative electrode of the LED light-emitting chip is electrically connected with the corresponding test terminal and the corresponding driving end of the control unit through the substrate.

In one embodiment, the plurality of LED light emitting chips include a red light chip, a green light chip, and a blue light chip; correspondingly, the plurality of test terminals comprise a first test terminal, a second test terminal and a third test terminal; the plurality of driving ends comprise a first driving end, a second driving end and a third driving end;

the anode of the red light chip, the anode of the green light chip, the anode of the blue light chip, the power terminal and the power terminal of the control unit are electrically connected together through the substrate, the cathode of the red light chip, the first driving end of the control unit and the first testing terminal are electrically connected together through the substrate, the cathode of the green light chip, the second driving end of the control unit and the second testing terminal are electrically connected together through the substrate, and the cathode of the blue light chip, the third driving end of the control unit and the third testing terminal are electrically connected together through the substrate.

In one embodiment, the first test terminal, the second test terminal, and the third test terminal are disposed on a first side of the substrate, and the power terminal, the ground terminal, the signal input terminal, and the signal output terminal are disposed on the remaining side of the substrate, where the remaining side is any side except the first side.

In one embodiment, the first test terminal, the second test terminal, the third test terminal, the power terminal, the ground terminal, the signal input terminal, and the signal output terminal are disposed on the same side of the substrate.

In one embodiment, the power terminal is used for electrically connecting with the anode of an external power supply, and the test terminal is used for electrically connecting with an external power ground; or the power terminal is used for being electrically connected with the external power ground, and the test terminal is used for being electrically connected with the anode of the external power.

In one embodiment, the power terminal, the ground terminal, the signal input terminal, the signal output terminal, and the test terminal are all made of copper.

A second aspect of embodiments of the present application provides a display device, comprising a driver and a display array, the display array comprising X × Y LED packages according to any of the embodiments of the first aspect; wherein X is the number of rows of the display array and Y is the number of columns of the display array;

the driver is electrically connected with a signal input terminal of the 1 st LED packaging body and is used for outputting a driving signal to the 1 st LED packaging body; the signal input terminal of each of the 2 nd to the X × Y th LED packages is electrically connected to the signal output terminal of the previous LED package.

A third aspect of embodiments of the present application provides a luminaire, comprising N LED packages according to any of the embodiments of the first aspect; wherein N is an integer greater than 1;

the signal input terminal of the 1 st LED packaging body in the N LED packaging bodies is the input end of the lamp, the signal output terminal of the Nth LED packaging body is the output end of the lamp, and the signal input terminal of each LED packaging body from the 2 nd LED packaging body to the Nth LED packaging body is electrically connected with the signal output terminal of the previous LED packaging body.

A fourth aspect of embodiments of the present application provides a light system comprising a driver and a luminaire as described in the third aspect;

the output end of the driver is electrically connected with the input end of the lamp; the driver is used for outputting a driving signal to the lamp.

Compared with the prior art, the embodiment of the utility model has the following beneficial effects: the testing terminal is arranged on the substrate of the LED packaging body, the negative electrode of the LED light-emitting unit is electrically connected with the testing terminal, and the testing terminal is packaged as a pin of the LED packaging body, so that after the LED packaging body is packaged, the testing of the characteristics of the LED light-emitting unit, such as forward conduction, reverse cut-off and the like, can be realized by applying forward voltage to a power supply terminal and connecting the testing terminal with a power supply ground; and the parameters such as reverse breakdown voltage, leakage current and the like of the LED light-emitting unit can be tested by applying forward voltage to the test terminal and connecting the power supply terminal with a power ground.

Drawings

Fig. 1 is a schematic structural diagram of an LED package according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of an LED package according to another embodiment of the present disclosure;

fig. 3 is a schematic diagram of a terminal distribution of an LED package according to an embodiment of the present disclosure;

fig. 4 is a schematic diagram of a terminal distribution of an LED package according to another embodiment of the present application;

fig. 5 is a schematic structural diagram of a display device according to an embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of a lamp according to an embodiment of the present disclosure;

fig. 7 is a schematic structural diagram of a lighting system according to an embodiment of the present application.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

Conventionally, the testing of the LED light emitting chip is completed before the LED light emitting chip is packaged on the substrate of the LED package, and after the LED light emitting chip is packaged on the substrate of the LED package, since the negative electrode of the LED light emitting chip is electrically connected to the driving end of the control unit and the detection terminal cannot be LED out alone, a forward voltage cannot be applied to the negative electrode of the LED light emitting chip, and therefore the reverse breakdown voltage and the leakage current of the LED light emitting chip of the packaged LED package cannot be detected. In the production or transportation process of the LED package, if the PN structure of the LED light emitting chip is damaged, such as by static electricity or chip cracking, the LED light emitting chip is reverse-punctured or leaks, and the brightness of the LED light emitting chip is rapidly reduced along with the extension of the service life of the LED light emitting chip, which results in the deterioration of the quality of the LED package. Since the conventional LED package cannot detect the reverse breakdown voltage and the leakage current of the LED light emitting chip after the LED package is packaged, the LED packages with poor quality cannot be screened out.

Based on this, the LED package of the embodiment is provided with the test terminal, and the test terminal is also packaged as the pin of the LED package, so that after the LED package is packaged, not only can the forward conduction and reverse cut-off of the LED light emitting chip be tested by applying the forward voltage to the power supply terminal and connecting the test terminal to the power supply ground, but also the reverse breakdown voltage and leakage current of the LED light emitting chip can be tested by applying the forward voltage to the test terminal and connecting the power supply terminal to the power supply ground, so that the LED package corresponding to the LED light emitting chip with the reverse breakdown voltage abnormality and/or the leakage current abnormality is screened out, and the quality of the LED package is improved.

The embodiment of the application firstly provides an LED packaging body. Referring to fig. 1, fig. 1 is a schematic structural diagram of an LED package according to an embodiment of the present disclosure. As shown in fig. 1, the LED package includes a substrate 800, a control unit 100, and an LED light emitting unit 200; the substrate 800 includes a power terminal 300, a ground terminal 400, a signal input terminal 500, a signal output terminal 600, and a test terminal 700; the LED light emitting unit 200 is an LED light emitting chip in the present embodiment.

The input end of the control unit 100 is electrically connected to the signal input terminal 500, the driving end of the control unit 100, the negative electrode of the LED light-emitting unit 200 and the testing terminal 700 are electrically connected together, the output end of the control unit 100 is electrically connected to the signal output terminal 600, the ground end of the control unit 100 is electrically connected to the ground terminal 400, and the power supply end of the control unit 100 and the positive electrode of the LED light-emitting unit 200 are electrically connected to the power supply terminal 300.

The control unit 100 and the LED light emitting unit 200 are disposed on the substrate 800, and the power terminal 300, the ground terminal 400, the signal input terminal 500, the signal output terminal 600, and the test terminal 700 all serve as pins of the LED package for electrical connection with the outside.

The power terminal 300 is used as a power pin of the packaged LED package, the ground terminal 400 is used as a ground pin of the packaged LED package, the signal input terminal 500 is used as a signal input pin of the packaged LED package, and the signal output terminal 600 is used as a signal output pin of the packaged LED package; the test terminals 700 serve as test pins of the packaged LED package.

In the present embodiment, the signal input terminal 500 is used for receiving an external driving signal and transmitting the driving signal to the control unit 100. After receiving the driving signal, the control unit 100 may generate a control signal based on the driving signal, and output the control signal to the LED light-emitting unit 200 through the driving end of the control unit 100 to perform driving control on the LED light-emitting unit 200, for example, to control the LED light-emitting unit 200 to be turned on or off.

In addition, when a plurality of LED packages are electrically connected in series, the control unit 100 in each LED package can also arrange the driving signals received by the control unit and output the driving signals to the signal input terminal 500 of the next LED package through the signal output terminal 600. By providing the test terminal 700 for the LED package and electrically connecting the test terminal 700 with the cathode of the LED light-emitting unit 200, and the power terminal 300 is electrically connected with the anode of the LED light-emitting unit 200, after the control unit 100 and the LED light-emitting unit 200 are packaged on the substrate 800, parameters such as reverse breakdown voltage and leakage current of the LED light-emitting unit 200 can be tested by applying a forward voltage to the test terminal 700 and connecting the power terminal 300 to an external power ground. Meanwhile, it is also possible to test whether the LED lighting unit 200 can be normally lighted by applying a forward voltage to the power terminal 300 and connecting the test terminal 700 to an external power ground.

Specifically, the power terminal 300 is used for electrically connecting to the positive electrode of the external power source, and the test terminal 700 is used for electrically connecting to the external power source; alternatively, the power terminal 300 is electrically connected to an external power source, and the test terminal 700 is electrically connected to the positive electrode of the external power source.

When the power terminal 300 is electrically connected to the positive electrode of the external power source, the test terminal 700 is electrically connected to the external power source, and the LED lighting unit 200 is tested whether to be normally lit by applying a forward voltage to the power terminal 300 and connecting the test terminal 700 to the external power source; when the power terminal 300 is electrically connected to an external power source, the test terminal 700 is electrically connected to the positive electrode of the external power source, and the test terminal 700 applies a forward voltage to the test terminal 700 and connects the power terminal 300 to the external power source, so as to test parameters such as a reverse breakdown voltage and a leakage current of the LED lighting unit 200.

In another embodiment, the LED light emitting unit 200 includes a plurality of LED light emitting chips, for example, red LED light emitting chips, green LED light emitting chips and blue LED light emitting chips, respectively, so as to meet the light emitting requirements of the LED package, the number of the test terminals 700 is the same as the number of the LED light emitting chips, and the number of the driving terminals of the control unit 100 is the same as the number of the LED light emitting chips. One LED light emitting chip corresponds to one test terminal 700 and one driving terminal of the control power supply 100.

The cathode of the LED light emitting chip is electrically connected to the corresponding test terminal 700 and the corresponding driving end of the control unit 100 through the substrate 800; the substrate 800 is provided with a plurality of conductive pads and pins as terminals, and even a conductive circuit connecting the conductive pads and the pins may be provided to facilitate the fixing of the electronic component and the independent contact of the test terminals 700 with the external power source anode or the external power source ground.

Referring to fig. 2 to 4, in an embodiment, the LED light emitting unit 200 includes a red chip 210, a green chip 220, and a blue chip 230.

Correspondingly, the plurality of test terminals 700 includes a first test terminal 710, a second test terminal 720, and a third test terminal 730. The plurality of driving terminals of the control unit 100 include a first driving terminal, a second driving terminal, and a third driving terminal.

The positive electrode of the red light chip 210, the positive electrode of the green light chip 220, the positive electrode of the blue light chip 230, the power terminal 300 and the power terminal of the control unit 100 are electrically connected together through the substrate 800, and the substrate 800 is provided with a conductive pad extending as a pin of the power terminal 300, so that the aforementioned components can be electrically connected together through the conductive pad; the negative electrode of the red light chip 210, the first driving end of the control unit 100, and the first test terminal 710 are electrically connected in common through the substrate 800, the negative electrode of the green light chip 220, the second driving end of the control unit 100, and the second test terminal 720 are electrically connected in common through the substrate 800, the negative electrode of the blue light chip 230, the third driving end of the control unit 100, and the third test terminal 730 are electrically connected in common through the substrate 800, the substrate 800 is provided with a plurality of conductive pads and is formed with pins serving as terminals, and may even be provided with a conductive circuit connecting the conductive pads and the pins, so as to facilitate the fixed connection of the chips and the electrical connection of the components through the corresponding conductive pads, and the conductive pads serving as the pins of the test terminals 700 may be independently contacted with an external power supply positive electrode or an external power supply ground, thereby facilitating actual operation.

In this embodiment, parameters such as reverse breakdown voltage and leakage current of the red chip 210 can be tested by applying a forward voltage to the first test terminal 710 and connecting the power supply terminal 300 to ground; whether the red chip 210 can be normally lighted is tested by applying a forward voltage to the power supply terminal 300 and connecting the first test terminal 710 to a power ground. Parameters such as reverse breakdown voltage and leakage current of the green chip 220 can also be tested by applying a forward voltage to the second test terminal 720 and connecting the power supply terminal 300 to a power ground; whether the green chip 220 can be normally lighted is tested by applying a forward voltage to the power supply terminal 300 and connecting the second test terminal 720 to a power ground. The parameters such as reverse breakdown voltage and leakage current of the blue chip 230 can be tested by applying a forward voltage to the third test terminal 730 and connecting the power supply terminal 300 to a power ground; whether the blue chip 230 can be normally lighted is tested by applying a forward voltage to the power supply terminal 300 and connecting the third test terminal 730 to the power ground.

In an embodiment of the present application, the power terminal 300, the ground terminal 400, the signal input terminal 500, the signal output terminal 600, the first test terminal 710, the second test terminal 720, and the third test terminal 730 are made of copper, so that loss in signal transmission or power transmission is reduced.

Referring to fig. 3, in an embodiment, a plurality of pins respectively serving as the first test terminal 710, the second test terminal 720 and the third test terminal 730 are disposed on the same side of the substrate 800, and a plurality of pins respectively serving as the power terminal 300, the ground terminal 400, the signal input terminal 500 and the signal output terminal 600 are disposed on the other sides of the substrate 800, so that the configuration is better and the subsequent test operation is facilitated. When the substrate 800 has a square shape, a plurality of pins respectively serving as the first test terminal 710, the second test terminal 720 and the third test terminal 730 can be disposed on the first side of the substrate 800, and a plurality of pins respectively serving as the power terminal 300, the ground terminal 400, the signal input terminal 500 and the signal output terminal 600 can be disposed on the second side, the third side and the fourth side of the substrate 800.

Referring to fig. 4, when the substrate 800 is shaped like a long strip, the plurality of pins respectively serving as the first test terminal 710, the second test terminal 720, the third test terminal 730, the power terminal 300, the ground terminal 400, the signal input terminal 500, and the signal output terminal 600 are disposed on the same side (long side) of the substrate 800, and the configuration is preferable to facilitate the subsequent test operation.

Referring to fig. 5, an embodiment of the present application further provides a display device, which includes a driver 1000 and a display array 2000, where the display array 2000 includes X × Y LED packages (represented by 911, 912 … 91Y; 921, 922 … 92Y … 9X1, 9X2 … 9 xy) as shown in any one of the above embodiments. Where X is the number of rows in the display array 2000 and Y is the number of columns in the display array 2000. Since the display device of the present embodiment includes the LED package of any of the above embodiments, the display device of the present embodiment at least includes the corresponding advantages of the LED package of any of the above embodiments.

The driver 1000 is electrically connected to the signal input terminal of the 1 st LED package 911, and is configured to output a driving signal to the 1 st LED package 911; the signal input terminal of each of the 2 nd to the X × Y th LED packages 9xy is electrically connected to the signal output terminal of the previous LED package.

In this embodiment, a plurality of LED packages are connected in series, thereby reducing the wiring material consumption.

Referring to fig. 6, an embodiment of the present application further provides another lamp including N LED packages according to any one of the above embodiments (shown as 901 … 90M … 90M +1 … 90N in the figure), because the lamp of the present embodiment includes the LED package according to any one of the above embodiments, the lamp of the present embodiment at least includes the corresponding advantages of the LED package according to any one of the above embodiments. Wherein N is an integer greater than 1. The signal input terminal of the 1 st LED packaging body 901 in the N LED packaging bodies is the input end of the lamp, the signal output terminal of the Nth LED packaging body 90N is the output end of the lamp, the signal input terminal of each LED packaging body from the 2 nd LED packaging body to the Nth LED packaging body is electrically connected with the signal output terminal of the previous LED packaging body, serial connection among the LED packaging bodies is achieved, and wiring consumable materials are reduced.

In this embodiment, the reverse breakdown voltage and the leakage current of the LED light emitting chip of any LED package of the lamp can be detected, so that the LED packages with abnormal reverse breakdown voltage and/or abnormal leakage current of the lamp can be screened out.

Referring to fig. 7, an embodiment of the present application further provides a lighting system, which includes a driver 1000 and the lamp 3000 according to the above embodiment, because the lighting system of the present embodiment includes the lamp 3000 according to any of the above embodiments, the lighting system of the present embodiment at least includes the corresponding advantages of the lamp 3000 according to any of the above embodiments. The output end of the driver 1000 is electrically connected to the input end of the lamp 3000, and the driver 1000 is configured to output a driving signal to the lamp.

In the present embodiment, the driver 1000 outputs a driving signal outside the first stage to the 1 st LED package 901, the 1 st LED package 901 operates according to the driving signal outside the first stage, and outputs a driving signal outside the next stage to the 2 nd LED package. The 2 nd LED packaging body works according to the driving signal output by the 1 st LED packaging body 901, and outputs the driving signal outside the next stage to the 3 rd LED packaging body, and so on until the Nth LED packaging body 90N works according to the driving signal output by the N-1 st LED packaging body, so that the plurality of LED packaging bodies are connected in series, and the wiring consumable material is reduced.

The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.

Claims (10)

1. An LED package, comprising: the LED light-emitting module comprises a substrate, a control unit and an LED light-emitting unit, wherein the substrate comprises a power supply terminal, a grounding terminal, a signal input terminal and a signal output terminal;

the input end of the control unit is electrically connected with the signal input terminal, the drive end of the control unit, the cathode of the LED light-emitting unit and the test terminal are electrically connected in common, the output end of the control unit is electrically connected with the signal output terminal, the ground end of the control unit is electrically connected with the ground terminal, and the power supply end of the control unit, the anode of the LED light-emitting unit and the power supply terminal are electrically connected in common;

the control unit and the LED light-emitting unit are arranged on the substrate, and the power supply terminal, the grounding terminal, the signal input terminal, the signal output terminal and the test terminal are all used as pins for electrically connecting the LED packaging body with the outside.

2. The LED package of claim 1, wherein the LED light emitting unit includes one or more LED light emitting chips, the number of the test terminals is the same as the number of the LED light emitting chips, and the number of the driving terminals of the control unit is the same as the number of the LED light emitting chips;

and the negative electrode of the LED light-emitting chip is electrically connected with the corresponding test terminal and the corresponding driving end of the control unit through the substrate.

3. The LED package of claim 2, wherein the plurality of LED light emitting chips comprise a red chip, a green chip, and a blue chip; correspondingly, the plurality of test terminals comprise a first test terminal, a second test terminal and a third test terminal; the plurality of driving ends comprise a first driving end, a second driving end and a third driving end;

the anode of the red light chip, the anode of the green light chip, the anode of the blue light chip, the power terminal and the power terminal of the control unit are electrically connected together through the substrate, the cathode of the red light chip, the first driving end of the control unit and the first testing terminal are electrically connected together through the substrate, the cathode of the green light chip, the second driving end of the control unit and the second testing terminal are electrically connected together through the substrate, and the cathode of the blue light chip, the third driving end of the control unit and the third testing terminal are electrically connected together through the substrate.

4. The LED package of claim 3, wherein the first test terminal, the second test terminal, and the third test terminal are disposed on a first side of the substrate, and the power supply terminal, the ground terminal, the signal input terminal, and the signal output terminal are disposed on a remaining side of the substrate, the remaining side being any side other than the first side.

5. The LED package of claim 3, wherein the first test terminal, the second test terminal, the third test terminal, the power terminal, the ground terminal, the signal input terminal, and the signal output terminal are disposed on a same side of the substrate.

6. The LED package of any of claims 1 to 5, wherein the power terminal is for electrical connection to a positive terminal of an external power source, and the test terminal is for electrical connection to an external power ground; or the power terminal is used for being electrically connected with the external power ground, and the test terminal is used for being electrically connected with the anode of the external power.

7. The LED package of any of claims 1 to 5, wherein the power terminals, the ground terminals, the signal input terminals, the signal output terminals, and the test terminals are all copper.

8. A display device comprising a driver and a display array comprising X Y LED packages according to any one of claims 1 to 7; wherein X is the number of rows of the display array and Y is the number of columns of the display array;

the driver is electrically connected with a signal input terminal of the 1 st LED packaging body and is used for outputting a driving signal to the 1 st LED packaging body; the signal input terminal of each of the 2 nd to the X × Y th LED packages is electrically connected to the signal output terminal of the previous LED package.

9. A luminaire comprising N LED packages according to any one of claims 1 to 7; wherein N is an integer greater than 1;

the signal input terminal of the 1 st LED packaging body in the N LED packaging bodies is the input end of the lamp, the signal output terminal of the Nth LED packaging body is the output end of the lamp, and the signal input terminal of each LED packaging body from the 2 nd LED packaging body to the Nth LED packaging body is electrically connected with the signal output terminal of the previous LED packaging body.

10. A light system comprising a driver and a light fixture as claimed in claim 9;

the output end of the driver is electrically connected with the input end of the lamp; the driver is used for outputting a driving signal to the lamp.

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