TWI678945B - Carry-signal controlled led lights and led light string having the same - Google Patents

Abstract

A carrier-controlled light-emitting diode lamp includes at least one light-emitting diode and a driving unit. The driving unit is coupled to the light-emitting diode, and receives a carrier light-emitting signal to control the light-emitting diode to emit light. The driving unit includes a light emitting control unit and a comparison unit. The light emitting control unit is used to drive the light emitting diode's light emitting behavior according to the light emitting command content of the carrier light emitting signal. The comparison unit receives the DC working power and compares it with a reference voltage value. When the voltage value of the DC working power is less than the reference voltage value, the light emitting control unit enters the sleep mode.

Description

Carrier-controlled light-emitting diode lamp and light-emitting diode having the same Body light string

The invention relates to a light-emitting diode lamp and a light-emitting diode lamp string, in particular to a carrier-controlled light-emitting diode lamp and a light-emitting diode lamp string having the light-emitting diode lamp.

Because light-emitting diodes (LEDs) have the advantages of high luminous efficiency, low power consumption, long life, fast response speed, high reliability, etc., light-emitting diodes have been widely used in light bars (light bar) or light string in series, parallel or series-parallel connection mode, applied to lighting lamps or decorative lighting, such as Christmas tree lighting, sports shoes lighting special effects ...

Taking festival lighting as an example, a complete light-emitting diode lamp basically includes a light-emitting diode lamp string (having a plurality of lamps) and a driving unit for driving the lamp. The driving unit is electrically connected to the lamp string, and by providing the lamp with the required power and control signals with light emitting data, it can be controlled in a point-control manner or in a synchronized manner to achieve a variety of light output effects of the light-emitting diode lamps. And change.

With the advancement of technology, the control signal with light-emitting data can be carried on the power line through the carrier wave, which can realize the function of providing power and data transmission with the same circuit architecture to simplify the wiring design and reduce the circuit size. And it is conducive to the design of the control circuit.

The driving unit mainly provides a light emitting control signal with a high voltage level and a low voltage level to drive the light emitting diode lamp string. For the drive of a light string, usually the light string contains As the number of photodiode lamps increases, the thicker and longer connection lines connecting the light-emitting diodes increase the parasitic capacitive reactance of the light-emitting diode string, which makes the system's signal processing speed not fast enough, thereby increasing misjudgment. The possibility of glowing signals. In order to effectively prevent the light-emitting diode string from misinterpreting the light-emitting control signal, it is necessary to slow down the conversion speed of the light-emitting control signal at high voltage and low voltage. However, the light-emitting diode string can drive fewer lights. Or the light color changes slowly.

Please refer to FIG. 1, which is a schematic diagram of a light emitting control signal waveform of a related art light emitting diode lamp string. FIG. 1 includes two light emission control signal waveforms, namely a first waveform Cv1 and a second waveform Cv2. In addition, the horizontal coordinate represents time t, and the vertical coordinate represents input voltage Vin, and is marked with a low-level voltage Vlow and a reset voltage Vreset, where the low-level voltage Vlow is a voltage that recognizes the light-emission control signal as a low-level voltage, and the reset voltage Vreset is the voltage for resetting the light emitting diode. Taking the second waveform Cv2 as an example, it is a schematic illustration of the natural discharge of the light-emitting control signal, so the problem is that when the parasitic capacitance of the line is too large, the discharge time is longer, resulting in the inability to enter the next cycle When the low-level voltage Vlow is reached, it is impossible to recognize (identify) the light-emitting control signal as a low-level, that is, it is continuously judged as a high-level voltage. In this case, the only way to increase the width between the two cycles is to allow the natural discharge to reach the low level voltage Vlow and achieve the low level voltage Vlow identification. However, such a control method is only suitable for achieving a better control effect when the number of lights connected in series is small, that is, because a complete lighting control signal cannot be provided by fast discharge, such a control method cannot It is suitable for a large number of lamps connected in series (for example, more than a hundred lamps), that is, it cannot be ensured that all the lamps connected in series can receive a complete lighting control signal.

Based on this, the light-emitting diode lamp string that can control the light-emitting control signal through the fast discharge circuit to quickly reduce its voltage level or the total parasitic capacitance of the line is easy to reduce the voltage level of the light-emitting control signal quickly, such as the first The waveform Cv1 is shown. However, when the light emission control signal decreases rapidly, It is easy to occur that after the light-emitting control signal is lower than the identifiable low-level voltage Vlow (such as time point t2), it continues to decrease rapidly, so that the light-emitting control signal touches the reset voltage Vreset (such as time point t3), making the circuit unnecessary. The reset misoperation caused abnormal judgment and malfunction of the light emitting diode module.

In the prior art, a set of signal voltages on the control circuit was used to clamp the voltage so that the voltage would not drop to the reset voltage Vreset. After all, the circuit is more complicated. Therefore, how to design a carrier-controlled light-emitting diode lamp and a light-emitting diode string with the light-emitting diode lamp to solve the problem that the voltage of the light-emitting control signal is too heavy due to the parasitic capacitance being too small. Setting the voltage causes the problem of abnormal judgment and malfunction of the light-emitting diode module, and a more streamlined circuit is a major issue that the inventor intends to overcome and solve.

The purpose of the present invention is to provide a carrier-controlled light-emitting diode lamp, which solves the problems of abnormal determination and malfunction of the light-emitting diode module caused by the rapid reduction in the voltage of the light-emitting control signal and the reset voltage being reached.

In order to achieve the purpose of the previous disclosure, the carrier-controlled light-emitting diode lamp provided by the present invention includes at least one light-emitting diode and a driving unit. The driving unit is coupled to the light-emitting diode, and the driving unit receives the carrier light-emitting signal to control the light-emitting diode to emit light. The driving unit includes a light emitting control unit and a comparison unit. The light emitting control unit is used to drive the light emitting diode's light emitting behavior according to the light emitting command content of the carrier light emitting signal. The comparison unit receives the DC working power and compares it with a reference voltage value. When the voltage value of the DC working power is greater than the reference voltage value, the comparison unit outputs a first control signal according to the light emission command content of the carrier light emission signal, so that the light emission control unit enters the working mode. When the voltage value of DC working power is less than When the reference voltage value is used, the comparison unit outputs a second control signal to the light-emitting control unit, so that the light-emitting control unit enters the sleep mode, wherein the reference voltage value is greater than the reset voltage value of the driving unit.

In one embodiment, the driving unit further includes an address signal processing unit. The address signal processing unit is coupled to the light emitting control unit and the comparison unit, and stores the light emitting address. The address signal processing unit receives the address signal transmitted from the light emitting control unit for comparison. When the address signal matches the light emitting address, the light emitting control The unit drives the light-emitting diode to emit light according to the content of the light-emitting command of the carrier light-emitting signal. When the comparison unit outputs the second control signal to the address signal processing unit, the address signal processing unit is caused to enter the sleep mode until it receives the first control signal and enters the working mode.

In one embodiment, the driving unit further includes an address programming unit. The address programming unit is coupled to the address signal processing unit and the comparison unit. The carrier light emission signal includes a programming start signal and a programming address signal. When the address programming unit receives the programming start signal, the address programming unit writes the light-emitting address into the address signal processing unit according to the content of the programming command of the programming address signal. When the comparison unit outputs the second control signal to the address programming unit, the address programming unit enters the sleep mode, and enters the working mode after receiving the first control signal.

In one embodiment, the driving unit further includes an oscillator. The oscillator is coupled to the light emitting control unit, the address signal processing unit, the address programming unit, and the comparison unit. When the comparison unit outputs the second control signal to the oscillator, the oscillator enters the sleep mode to stop the oscillation operation, and after receiving the first control signal, it enters the operation mode to start the oscillation operation and provide an oscillation signal. When the oscillator stops oscillating in the sleep mode, the light-emitting control unit, the address signal processing unit, and the address programming unit do not receive the oscillation signal provided by the oscillator and enter the sleep mode.

In one embodiment, the driving unit further includes a current detection unit. The current detection unit is coupled to the light-emitting control unit, and the light-emitting control unit drives the light-emitting diode's light-emitting behavior after receiving the light-emitting command content of the carrier light-emitting signal through the current detection unit.

In one embodiment, the driving unit further includes a discharging unit. The discharge unit is coupled to the comparison unit and the current detection unit. When the discharge unit receives the carrier light emission signal transmitted by the current detection unit, the discharge unit starts to discharge the DC working power.

In one embodiment, the driving unit further includes a power capacitor. The power capacitor is coupled to the light-emitting control unit, the comparison unit, and the light-emitting diode.

In one embodiment, the light emitting diode and the driving unit are disposed on the substrate in the form of surface-adhesive elements; the driving unit and the light emitting diode are electrically connected in a wired manner and are packaged in a package.

In one embodiment, the driving unit is electrically connected to the first platform, and the light emitting diode is electrically connected to the second platform. The driving unit and the light emitting diode are electrically connected in a wired manner, and the package is In a package.

With the proposed carrier-controlled light-emitting diode lamp, the power consumption of the analog circuit in the light-emitting diode module can be effectively reduced, while maintaining the normal driving operation of the light-emitting diode module.

Another object of the present invention is to provide a carrier-controlled light-emitting diode light string, which streamlines the control circuit and solves the problem that the voltage of the light-emitting control signal touches the reset voltage due to the rapid decrease, which causes abnormal judgment and malfunction of the light-emitting diode module problem.

In order to achieve the purpose of previous disclosure, the carrier-controlled light-emitting diode lamp string provided by the present invention includes a power line, a controller, and at least one light-emitting diode lamp. The controller is coupled to the power line. Light-emitting diode The lamp is coupled to the controller through the power line, and receives the DC working power and the carrier light emission signal transmitted by the controller through the power line.

In one embodiment, the controller includes a rectifier unit, a switch, and a control unit. The rectifier unit is coupled to the power line to provide DC working power. The switch connects the power cord and the light-emitting diode lamp. The control unit is coupled to the rectifier unit and the switch. When the control unit controls the switch to be turned on, the DC working power forms a power supply circuit for supplying power to the light-emitting diode lamp through the power line. When the control unit wants to generate a carrier light emitting signal, the control unit continuously switches the on and off of the switch according to the light emitting command content of the carrier light emitting signal, so that the DC working power of the power line forms a complex pulse wave to form a carrier light emitting signal, and passes the power line Teleport to a light emitting diode lamp.

In one embodiment, the controller further includes a discharge circuit. The discharge line is coupled to the power line and the control unit. When the switch is turned off, the controller drives the discharge line to receive the DC working power and starts to discharge the DC working power.

In one embodiment, the controller further includes a voltage adjustment capacitor. The voltage adjusting capacitor is coupled to the power line. When the switch is turned off, the voltage stabilizing capacitor provides DC working power to the light emitting diode lamp.

With the proposed carrier-controlled light-emitting diode lamp string, the power consumption of the analog circuit in the light-emitting diode module can be effectively reduced, while maintaining the normal driving operation of the light-emitting diode module.

In order to further understand the technology, means and effects adopted by the present invention to achieve the intended purpose, please refer to the following detailed description and accompanying drawings of the present invention. It is believed that the purpose, features and characteristics of the present invention can be in-depth and specific It is understood, however, the drawings are provided for reference and description only, and are not intended to limit the present invention.

100‧‧‧ Controller

10‧‧‧Power Conversion Circuit

20‧‧‧Control circuit

30‧‧‧ LED light string

31,32, ..., 3n‧‧‧light-emitting diode module

Sec‧‧‧Light Control Data

FUSE‧‧‧Fuse

VAR‧‧‧ Varistor

R12‧‧‧Input resistance

C11‧‧‧input capacitor

D11 ~ D14‧‧‧Diode

CONR‧‧‧Control Unit

Qsw‧‧‧Output control switch

R22, R23‧‧‧Resistance

C21‧‧‧capacitor

Dz‧‧‧Zina Diode

311‧‧‧lighting control unit

312‧‧‧address signal processing unit

313‧‧‧Address burning unit

41‧‧‧ Regulator

42‧‧‧ Oscillator

43‧‧‧Address and data identifier

44‧‧‧Logic Controller

45‧‧‧Displacement register

46‧‧‧Output buffer register

47‧‧‧Drive circuit

48‧‧‧Address Register

49‧‧‧Address Comparator

50‧‧‧ address memory

51‧‧‧Address Programming Controller

52‧‧‧burning signal detector

53‧‧‧Signal Filter

54‧‧‧discharge unit

55‧‧‧Current Detector

56‧‧‧ Comparison Unit

60‧‧‧Power Capacitor

24‧‧‧Voltage adjustment unit

70‧‧‧ Package

71‧‧‧Drive unit

72‧‧‧light-emitting diode

711‧‧‧First bracket

712‧‧‧First Platform

721‧‧‧Second bracket

722‧‧‧Second Platform

73‧‧‧ substrate

713‧‧‧The first welding plate

723‧‧‧Second welding plate

714‧‧‧first electrode

724‧‧‧Second electrode

Sc‧‧‧Control signal

Lp‧‧‧ Power Cord

Vlow‧‧‧Low level voltage

Vreset‧‧‧ reset voltage

Vd‧‧‧light-emitting driving signal

Vth‧‧‧Reference voltage value

Vac‧‧‧AC Power

Vdc‧‧‧DC Power Supply

Cv1‧‧‧ the first waveform

Cv2‧‧‧Second Waveform

Cv3‧‧‧ Third Waveform

Cv4‧‧‧ Fourth Waveform

t1 ~ t4‧‧‧Time

FIG. 1 is a waveform diagram of a light emitting control signal of a light emitting diode lamp string of the related art.

FIG. 2A is a circuit block diagram of a first embodiment of a driving system of a light emitting diode lamp string with carrier control according to the present invention.

FIG. 2B is a circuit block diagram of a second embodiment of a driving system of a light emitting diode lamp string with carrier control according to the present invention.

FIG. 3A is a detailed circuit diagram of an embodiment of the power conversion circuit and the control circuit in FIG. 2A.

FIG. 3B is a detailed circuit diagram of the power conversion circuit and the control circuit in FIG. 2B.

FIG. 3C is a detailed circuit diagram of another embodiment of the power conversion circuit and the control circuit in FIG. 2A.

FIG. 4A is a circuit block diagram of a first embodiment of a light emitting diode module according to the present invention.

FIG. 4B is a circuit block diagram of a light emitting diode module according to a second embodiment of the present invention.

FIG. 5 is a circuit diagram of a comparison unit of the present invention.

FIG. 6 is a waveform diagram of a light emitting driving signal according to the present invention.

7A is a perspective view of a first embodiment of a packaging structure of a light emitting diode lamp according to the present invention.

FIG. 7B is a top view of the first embodiment of the packaging structure of the light-emitting diode lamp of the present invention.

8A is a perspective view of a second embodiment of a packaging structure of a light emitting diode lamp according to the present invention.

FIG. 8B is a top view of a second embodiment of a packaging structure of a light emitting diode lamp according to the present invention.

The technical content and detailed description of the present invention are described below with reference to the drawings.

Please refer to FIG. 2A, which is a circuit block diagram of a first embodiment of a driving system of a light emitting diode lamp string with carrier control according to the present invention. The driving system of the first embodiment includes a power conversion circuit 10, a control circuit 20, and a light emitting diode lamp string 30. Among them, the power conversion circuit 10 and the control circuit 20 can be integrated into the controller 100. Specifically, it can be implemented by a physical circuit control box including the power conversion circuit 10 and the control circuit 20. The power conversion circuit 10 receives an AC power source Vac, and converts the AC power source Vac into a DC power source Vdc. The DC power source Vdc may be generated on an output capacitor (not labeled) connected across the output of the power conversion circuit 10.

The control circuit 20 receives a DC power source Vdc to provide a DC power supply required by the control circuit 20 and the light emitting diode string 30. The controller 100 is coupled to the AC power source Vac and the light-emitting diode lamp string 30 through a power line Lp. In a broad sense, the power line Lp is not limited by the place marked in FIG. 2A. As long as it can be used to transmit the power provided by the AC power Vac or the DC power Vdc, it should belong to the scope of the power line Lp, such as AC power Vac and power conversion circuits The electrical connection of 10, the electrical connection of the control circuit 20 and the anode end of the light emitting diode string 30, or the electrical connection of the control circuit 20 and the cathode end of the light emitting diode string 30. In this embodiment, the light-emitting diode lamp string 30 includes a plurality of light-emitting diode modules (or light-emitting diode lamps) 31, 32, ..., 3n. These light-emitting diode modules 31, 32 , ..., 3n are connected in series and electrically connected to the control circuit 20. In this implementation, the light-emitting diode lamp string 30 is a light string with a programming function, so each of the light-emitting diode modules 31, 32, ..., 3n has its own burning processing for the light-emitting data and the address data. The digital and analog lines are described later.

The control circuit 20 can be wired or wireless. In addition to the built-in light-emitting data, the control circuit 20 can also receive light-emitting control data Sec from the outside, so that the control circuit 20 can control the light-emitting diode according to the content of the light-emitting control data. Each of the light emitting diode modules 31, 32, ..., 3n of the light string 30 performs light emission control. For example, the user can control the light by wired operation by operating the computer. The production data Sec is transmitted to the control circuit 20, so that the control circuit 20 performs light emission control based on the light emission control data Sec. Alternatively, the user can wirelessly transmit the light emission control data Sec to the control circuit 20 by operating a mobile phone or a wearable device, so that the control circuit 20 performs light emission control according to the light emission control data Sec. However, the present invention is not limited by the aforementioned manner of transmitting the light emission control data Sec and the user device operated.

Please refer to FIG. 2B, which is a circuit block diagram of a second embodiment of a driving system of a light emitting diode lamp string with carrier control according to the present invention. The main difference between the second embodiment and the first embodiment shown in FIG. 2A lies in the light emitting diode modules 31, 32, ..., 3n of the light emitting diode lamp string 30 of the former (ie, the second embodiment). They are connected in parallel and electrically connected to the control circuit 20. In this embodiment, since the light-emitting diode modules 31, 32, ..., 3n are connected in parallel, the control circuit 20 and the light-emitting diode modules 31, 32, ..., 3n are connected in parallel. The power is directly supplied through the DC power source Vdc, such as but not limited to a battery unit, that is, compared with the first embodiment of FIG. 2A, the operation of converting the AC power source Vac to the DC power source Vdc is omitted compared to the first embodiment of FIG. 2A. Similarly, the light-emitting diode light string 30 is a light string having a programming function, so each of the light-emitting diode modules 31, 32, ..., 3n has a digital number for each of the light-emitting data and the address data. Analogous lines, described later.

Please refer to FIG. 3A and FIG. 3B, which are detailed circuit diagrams of the power conversion circuit and the control circuit in FIG. 2A and FIG. 2B, respectively. The power conversion circuit 10 includes a fuse FUSE, a varistor VAR, an input resistance R12, an input capacitor C11 connected in parallel with the input resistance R12, and a full-bridge rectifier composed of a plurality of diodes D11 to D14. The fuse FUSE and the varistor VAR provide overcurrent and overvoltage protection of the power conversion circuit 10, respectively. The input resistor R12 and the input capacitor C11 are coupled between the fuse FUSE, the varistor VAR and the full-bridge rectifier. The excess energy can be absorbed by the input capacitor C11 to adjust the total supply to the LED string 30. The magnitude of the voltage. After the AC power source Vac is rectified by the full-bridge rectifier, the output is a DC power source Vdc and is connected across the output capacitor C2 at both ends of the output of the power conversion circuit 10.

The control circuit 20 includes a control unit CONR, an output control switch Qsw, and a control unit CONR operating voltage generating circuit. The control unit CONR is coupled to the output control switch Qsw and the control unit CONR operating voltage generating circuit. The output control switch Qsw receives the DC power source Vdc and is controlled by the control unit CONR to turn on or off the DC power source Vdc and transmit the DC power source Vdc to the light-emitting diode lamp string 30. In this embodiment, the output control switch Qsw is coupled to the anode terminal of the light-emitting diode lamp string 30, and it is a p-channel metal-oxide semiconductor field-effect transistor (p-channel MOSFET), which is transmitted through the resistor R23 Coupled to the control unit CONR. However, in other embodiments, the output control switch Qsw may also be coupled to the cathode terminal of the light-emitting diode string 30, and it is an n-channel MOSFET, which is coupled to the control unit through a resistor R23. CONR, can reach the equivalent characteristics of the circuit.

In this embodiment, the control unit CONR operating voltage generating circuit includes a resistor R22, a capacitor C21, and a Zener diode Dz. The capacitor C21 is connected in parallel with the Zener diode Dz, and then connected to the resistor R22, but this is not a limitation of the present invention. The Zener diode Dz receives the DC power source Vdc via the resistor R22, and clamps the DC power source Vdc at a preset fixed voltage value to provide the working voltage required by the control unit CONR. However, the present invention is not limited by the architecture of the control unit CONR operating voltage generating circuit shown in FIG. 3A, as long as the circuit architecture capable of achieving the function of generating the operating voltage should be included in the scope of the present invention.

3C is a detailed circuit diagram of another embodiment of the power conversion circuit and the control circuit in FIG. 2A. Compared to FIG. 3A, the control circuit 20 further includes a voltage adjustment unit 24. The voltage adjustment unit 24 may be a fast discharge circuit for adjusting the fast discharge of the DC working power provided to the light emitting diode string 30, or the voltage. The adjustment unit 24 may be a voltage adjustment capacitor for adjusting the slow-down discharge of the DC operating power provided to the light-emitting diode lamp string 30.

If the voltage adjustment unit 24 is a voltage adjustment capacitor, the voltage adjustment unit 24 is coupled in parallel to both ends of the light emitting diode lamp string 30, and according to the capacitance value (capacitive reactance value) provided by the voltage adjustment unit 24, Slow discharge of the DC operating power of the body light string 30.

If the voltage adjustment unit 24 is a fast discharge circuit, the voltage adjustment unit 24 is coupled to the output control switch Qsw, the light-emitting diode lamp string 30 and the control unit CONR, and is controlled by the control unit CONR. When the control unit CONR controls the output control switch Qsw to be turned off, the control unit CONR reduces the voltage (or output voltage) output to the light-emitting diode string 30 by discharging, or controls the fast discharge circuit ( Voltage adjustment unit 24), or by controlling the fast discharge circuits (not shown) in each of the light emitting diode modules 31, 32, ..., 3n to quickly reduce the DC operation output to the light emitting diode string 30 The voltage of electricity. The control unit CONR turns on the output control switch Qsw according to the set time to restore (increase) the output voltage output to the light emitting diode lamp string 30, and generates a light emitting driving signal according to the received light emitting control data Sec, so that the light emitting diode The body light string 30 performs the light emitting mode operation according to the light emitting driving signal.

Conversely, when no light-emitting driving signal is to be transmitted to the light-emitting diode lamp string 30, the control unit CONR controls the output control switch Qsw to be turned on, so that the DC power source Vdc (that is, DC operation) output by the power conversion circuit 10 (Power) Power is supplied to the light emitting diode string 30 via the output control switch Qsw. Therefore, as long as the output switch Qsw is controlled to be turned off or turned on, the effect that the light emitting driving signal and the power supply can be transmitted to the light emitting diode lamp string 30 under the same circuit structure can be achieved.

Please refer to FIG. 4A, which is a circuit block diagram of a first embodiment of a light emitting diode module according to the present invention. According to the foregoing description, the light-emitting diode lamp string 30 is a lamp string having a programming function, so each of the light-emitting diode modules 31, 32, ..., 3n has a programming process for light-emitting data and address data. The digital and analog circuits include, for example, a lighting control unit 311 responsible for lighting control, an address signal processing unit 312 responsible for address signal processing, and an address programming unit 313 for address programming. As shown in FIG. 4A, the light-emitting diode module 31 with a programming function is taken as an example (the remaining light-emitting diode modules 32, ..., 3n have the same circuit block, and will not be repeated), the light-emitting diode module 31 (i.e., light-emitting diode lamp) includes voltage regulator 41, oscillator 42, address and data identifier 43, logic controller 44, displacement register 45, and output buffer temporarily Device 46, driving circuit 47, address register 48, address comparator 49, address memory 50, address programming controller 51, programming signal detector 52, signal filter 53, discharge unit 54 , A current detector 55 and a comparison unit 56.

Among them, the discharge unit 54 can realize the discharge function through the on and off control of the power switch. The current detector 55 may be a voltage-dividing resistor network. By detecting the voltage value obtained by dividing the received voltage, the current is detected correspondingly. Incidentally, the light-emitting control unit 311 includes the address and data identifier 43, the logic controller 44, and the displacement register 45 described above. The light emitting control unit 311 is used to drive the light emitting diode according to the content of the light emitting command of the carrier light emitting signal. Among them, the content of the light-emitting command corresponds to the specific identification coded content of the light-emitting diode's light-emitting behavior (mode), such as color change, light-off (dark) mode, light-off frequency, and so on. The address signal processing unit 312 includes the address register 48, the address comparator 49, and the address memory 50 described above. The address programming unit 313 includes the address programming controller 51 and the programming signal detector 52 described above.

Incidentally, the light-emitting diode module shown in FIG. 4A is applied to the series connection of FIG. 2A and FIG. 3A. Therefore, it is necessary to use the voltage regulator 41 for voltage regulation and voltage stabilization. In addition, the light-emitting diode module shown in FIG. 4A uses a point-control operation mode, so the light-emitting diode module has an address for processing address data (including operations such as judgment, memory, burning, etc.). The signal processing unit 312 and the address programming unit 313 include an address register 48, an address comparator 49, an address memory 50, an address programming controller 51, and a programming signal detector 52. In other words, if the light-emitting diode module adopts a synchronous operation mode, the address signal processing unit 312 and the address programming unit 313 may be omitted, and only the light-emitting control unit 311 for light-emitting data processing is required.

In the above circuit, it can be divided into an analog circuit portion and a digital circuit portion according to the difference in signal characteristics. Among them, the voltage regulator 41, the oscillator 42, the address programming controller 51, the programming signal detector 52, and the discharging unit 54 belong to the analog circuit section, and the others can be classified as the digital circuit section. However, in different embodiments, the address burning controller 51 and the burning letter The number detector 52 can also be implemented by both an analog circuit and a digital circuit. Compared with the low power consumption of digital circuits, analog circuits (such as voltage regulator 41, oscillator 42, light-emitting control unit 311, address signal processing unit 312, address programming unit 313, and discharge unit 54) are luminous. A relatively power-consuming circuit element in the polar module 31. Therefore, the creative features of the present invention are focused on effectively reducing the power consumption of these analog circuits, while taking care to maintain the normal driving operation of the light emitting diode module 31, as described below.

The voltage regulator 41 receives the input voltage, and adjusts and controls the voltage provided by the voltage regulator 41 so that the output voltage provided is maintained stable. The oscillator 42 generates a periodic clock signal, which serves as a time reference for maintaining the light emitting control unit 311, the address signal processing unit 312, and the address programming unit 313 to operate normally and orderly. Therefore, when the oscillator 42 enters the sleep mode to stop the oscillation operation, the light emitting control unit 311, the address signal processing unit 312, and the address programming unit 313 are controlled to enter the sleep mode.

The address and data identifier 43 is coupled to the oscillator 42; the logic controller 44 is coupled to the address and data identifier 43; the displacement register 45 is coupled to the logic controller 44; the output buffer register 46 is coupled to the displacement register Device 45, and is coupled to the driving circuit 47. The driving circuit 47 is coupled to a plurality of light emitting diodes.

The address register 48 is coupled to the logic controller 44; the address comparator 49 is coupled to the logic controller 44 and the address register 48; the address memory 50 is coupled to the address comparator 49. The address programming controller 51 is coupled to the address memory 50; the programming signal detector 52 is coupled to the address memory 50 and the address programming controller 51. The signal filter 53 is coupled to the address and data identifier 43, the voltage regulator 41 and the oscillator 42.

The light-emitting driving signal generated by the control circuit 20 is transmitted to the light-emitting diode module 31, and is filtered by the signal filter 53 and then provided to the address and data identifier 43 for identification. After identification, the address and data identifier 43 recognizes the address data (information) and the luminescence data (information) in the light-emitting driving signal separately, and the address and data identifier 43 transmits the address data and the luminescence data to Logic controller 44. The logic controller 44 transmits the address data to the address register 48. However, it is not limited to this, the address data can also be transmitted to the address register 48 by the address and data identifier 43 after being identified by the address and data identifier 43.

The address comparator 49 receives the address data of the address register 48, and also receives the local address data stored in the address memory 50, and then compares the address data with the local address data. If the address data is the same as the local address data, it means that the light-emitting data currently received by the logic controller 44 is the light-emitting control data of the light-emitting diode module 31. At this time, the address comparator 49 notifies The logic controller 44 transmits the light-emitting data to the driving circuit 47 through the displacement register 45 and the output buffer register 46 for driving the light-emitting diodes. Conversely, if the address data is different from the local address data, it means that the light-emitting data currently received by the logic controller 44 is not the light-emitting control data of the light-emitting diode module 31, but other light-emitting diodes. Emission control data of one of the modules 32, ..., 3n.

When the programming signal detector 52 detects a programming start signal, the programming signal detector 52 notifies the address programming controller 51. At this time, the address programming controller 51 starts to receive the programming address data, and burns the programming address data into the address memory 50, so that the address memory 50 stores the local address data.

Please refer to FIG. 4B, which is a circuit block diagram of a second embodiment of the light emitting diode module of the present invention. As mentioned above, since the light-emitting diode module shown in FIG. 4B is applied to the parallel connection of FIG. 2B and FIG. 3B, the main difference between the second embodiment and the first embodiment shown in FIG. 4A lies in the former. (Ie, the second embodiment) there is no need to additionally use the regulator 41 for voltage regulation and regulation. The remaining circuit operation principles and actions are the same as those described in FIG. 4A, so they will not be described in detail here.

According to the foregoing, in order to effectively reduce the power consumption of the analog circuit and to maintain the normal operation of the light-emitting diode module 31, the light-emitting diode module 31 further includes a comparison unit, which is used as a comparison unit for voltage comparison. 56. Taking the light-emitting driving signal as a voltage signal as an example, the comparison unit 56 receives the light-emitting driving signal Vd and a preset reference voltage value Vth. As shown in FIG. 5, in this embodiment, the comparison unit 56 may use an operational amplifier circuit as a comparator, in which the received light-emitting driving signal Vd is input to a non-inverting input terminal of the comparator, and the reference voltage value is also input. Vth input to the inverting input of the comparator Incoming. By comparing the light emission driving signal Vd with the reference voltage value Vth, when the light emission driving signal Vd is greater than the reference voltage value Vth, a high-level control signal Sc is output; otherwise, when the light emission driving signal Vd is less than the reference voltage value Vth, Then, a low-level control signal Sc is output. However, without this limitation, the light-emitting driving signal Vd and the reference voltage value Vth may be input to the inverting input terminal and the non-inverting input terminal of the comparator, respectively. After comparison, the control opposite to the above-mentioned level can be obtained. The signal Sc can also reach the judgment of the light-emission driving signal Vd. In addition, the determination of the light-emission driving signal Vd can be realized without using an operational amplifier circuit, and any circuit that can be used for voltage comparison should be included in the scope of the present invention.

With reference to FIG. 6, it is a waveform diagram of a light-emitting driving signal according to the present invention. According to the foregoing description, when the control unit CONR controls the output control switch Qsw to be turned off, the light emitting diode string 30 reduces the voltage in a discharging manner to provide driving of each of the light emitting diode phantoms of the light emitting diode string 30. Low level voltages of the light-emission driving signals Vd of the groups 31, 32, ..., 3n. Alternatively, by controlling the fast discharge circuit in each of the light emitting diode modules 31, 32, ..., 3n, the voltage generated by the light emitting signal voltage generating circuit is quickly reduced to provide each of the driving of the light emitting diode lamp string 30. Low level voltage of the light-emitting driving signals Vd of the light-emitting diode modules 31, 32, ..., 3n. In addition, the comparison of the light-emission drive signal Vd and the reference voltage value Vth through the comparison unit 56 can solve the rapid decrease of the light-emission drive signal Vd and the reset voltage Vreset caused by the fast discharge operation, which causes an unnecessary reset malfunction of the circuit, causing Abnormal judgment and malfunction of the light emitting diode module 31.

Specifically, as shown in the fourth waveform Cv4, at time point t1, the control unit CONR controls the output control switch Qsw to be turned off, and at this time, the light emission driving signal Vd decreases rapidly. At time point t2, when the reference voltage value Vth is reached, since the light-emission drive signal Vd is less than (or less than or equal to) the reference voltage value Vth, the comparison unit 56 shown in FIG. 5 outputs low after comparing the two voltages. Level control signal Sc. At this time, in order to prevent the light-emission drive signal Vd from being further reduced rapidly due to the rapid discharge, the control signal Sc generated by the comparison unit 56 controls the light-emitting diode module 31 in the comparison. Circuits that consume power, such as, but not limited to, analog circuits, such as the voltage regulator 41, oscillator 42, light-emitting control unit 311, address signal processing unit 312, address programming unit 313, and discharge unit shown in FIG. 4A 54 enters a sleep mode or may be referred to as an eco mode to greatly reduce the power consumption of the light-emitting diode module 31, so that the speed of the light-emitting driving signal Vd decreases sharply. Incidentally, for the simplicity of FIG. 4A and FIG. 4B, the control signals input to the voltage regulator 41, the oscillator 42, the address programming controller 51, the programming signal detector 52, and the discharge unit 54 are shown. Sc is actually a comparison unit 56 which is respectively coupled to the voltage regulator 41, the oscillator 42, the address programming controller 51, the programming signal detector 52, and the discharging unit 54, and provides the output control signal Sc to The circuit units.

After the time point t2 shown in FIG. 6, when the light-emitting driving signal Vd is smaller than the reference voltage value Vth, because the analog circuits mentioned above enter the sleep mode, the speed of the light-emitting driving signal Vd decays slowly to avoid touching the reset voltage Vreset. . Incidentally, the low-level voltage of the light-emitting driving signal Vd can be identified through the design as the reference voltage value Vth or a voltage value slightly smaller than the reference voltage value Vth but greater than the reset voltage Vreset, so as to achieve rapid discharge detection and effectively reduce The power consumption and the low level voltage of the light-emitting driving signal Vd are correctly determined (identified), so that the light-emitting diode module 31 can operate normally. For example, the reset voltage Vreset can be designed to be 0.7 volts, the reference voltage value Vth can be designed to be 1.1 volts, and the low level voltage of the light-emission drive signal Vd can be designed to be 1.1 volts, or a slightly smaller 0.8 to 1.0 volts. Design and adjust appropriately to meet the needs of the overall circuit response or action.

Until time point t3, the control unit CONR turns on the output control switch Qsw to restore (increase) the output voltage output to the light-emitting diode lamp string 30, and generates a light-emitting driving signal according to the received light-emitting control data Sec, so that light is emitted. The diode string 30 performs the light emitting mode operation according to the light emitting driving signal. Therefore, since the light emission driving signal Vd is greater than the reference voltage value Vth, the control signal Sc generated by the comparison unit 56 is converted from a low level to a high level, so that the control signal Sc controls the voltage regulator 41, the oscillator 42, and the light emission control unit. 311, the address signal processing unit 312, the address programming unit 313, and the discharge unit 54 leave the sleep mode to resume normal operations of the circuit units. Similarly, its The remaining light-emitting diode modules 32, ..., 3n are controlled by a subsequent cycle of the light-emitting driving signal Vd, and the same operations are not described in detail here. Thereby, the driving and light emitting control of all the light emitting diode modules 31, 32, ..., 3n of the light emitting diode lamp string 30 are completed.

In addition to the above embodiments, as shown in FIG. 3A or FIG. 3B, a voltage adjustment capacitor (voltage adjustment unit 24) may be coupled in parallel to the light emitting diode lamp string 30, that is, at the anode end of the light emitting diode lamp string 30. An external capacitor is coupled to the cathode terminal to increase the equivalent total capacitance of the 30 line of the light-emitting diode lamp string, so that the speed of the light-emitting driving signal Vd is slowed down to avoid touching the reset voltage Vreset, which makes the circuit unnecessary. The reset misoperation caused abnormal judgment and malfunction of the light emitting diode module 31. Incidentally, for the control of the light-emitting diode module 31, the normal control system is shown in the third waveform Cv3, that is, it can be recognized (identified) that the light-emitting control signal is at a low level without touching it. The reset voltage Vreset can not even touch the reference voltage value Vth to maintain the light emitting control unit 311, the address signal processing unit 312, and the address programming unit 313 can continuously operate without entering the sleep mode to achieve the best Control effectiveness. In other words, you can adjust the width between the two cycles through the design of the circuit parameters and clocks, such as shortening the width and cooperating with the fast discharge circuit. Such a control method can be suitable for a large number of lamps connected in series and a light-emitting control signal. For the rapid identification of low-level voltage, it can maintain the best control performance without entering the sleep mode.

Please refer to FIG. 7A and FIG. 7B, which are a perspective view and a top view of the first embodiment of the packaging structure of the light emitting diode lamp of the present invention, respectively. Any of the above light-emitting diode modules 31, 32,..., 3n is packaged in a package 70 to form the package structure, which includes the driving unit 71 and at least one light-emitting diode 72 (R ( Red), G (green) and B (blue), but not limited to this). The packaging structure further includes a first bracket 711, a first platform 712 formed on the first bracket 711, a second bracket 721, and a second platform 722 formed on the second bracket 721. The driving unit 71 is disposed on the first platform 712 and is electrically connected to the first platform 712 through a wire bonding method. The light emitting diode 72 is disposed on the second platform 722 and is electrically connected to the second platform 722 through a wire bonding method. Drive unit 71 is electrically connected to emit light The diode 72, for example, the driving unit 71 is electrically connected to the light emitting diode 72 in a bonding manner, and then the light emitting diode 72 is driven and controlled.

Please refer to FIG. 8A and FIG. 8B, which are a perspective view and a top view of a second embodiment of a packaging structure of a light emitting diode lamp of the present invention, respectively. Compared to FIG. 7A, the package structure shown in FIG. 8A adopts a surface mount device (SMD) type. The driving unit 71 is disposed on the first solder plate 713 and is electrically connected to the first through a wire bonding method. Welding plate 713, at least one light-emitting diode 72 (in this embodiment, three light-emitting diodes R (red), G (green), and B (blue), but not limited to this) are provided in the second welding The second soldering plate 723 is electrically connected to the plate 723 by a wire bonding method. The driving unit 71 is electrically connected to the light emitting diode 72 in a wired manner, and further drives and controls the light emitting diode 72. The first soldering plate 713 and the second soldering plate 723 are disposed on the substrate 73, and the first soldering plate 713 is filled with a conductive material (such as conductive tin) through a via hole in the substrate 73 and is connected to the first electrode on the other side of the substrate 73. 714 forms an electrical connection; similarly, the second solder plate 723 is electrically connected to the second electrode 724 on the other side of the substrate 73 by filling a conductive material (such as conductive tin) through the via hole on the substrate 73. Finally, the package 70 is used for packaging to realize another embodiment of the above-mentioned light emitting diode modules 31, 32,..., 3n packaging structure.

In summary, the present invention has the following characteristics and advantages:

1. It can realize the effect of transmitting the light-emitting driving signal and power supply to the light-emitting diode lamp string under the same circuit structure.

2. The fast discharge circuit of each light-emitting diode module can be used to provide a fast-discharge control light-emitting drive signal to quickly reduce its voltage level to ensure that all light-emitting diodes connected in series can obtain complete light-emitting control.

3. Effectively reduce the power consumption of these analog circuits in the light emitting diode module, while taking care to maintain the normal driving operation of the light emitting diode module.

4. The light-emitting diode module can adopt point-control operation mode or synchronous operation mode, which not only can improve the flexibility and convenience of the control circuit design, but also can achieve a variety of light output effects of light-emitting diode lamps. And change.

The above are only detailed descriptions and drawings of the preferred embodiments of the present invention, but the features of the present invention are not limited thereto, and are not intended to limit the present invention. The scope of the present invention shall be in the scope of the following patent applications. For the purpose of this application, all embodiments that are within the spirit of the scope of the present invention and similar changes should be included in the scope of the present invention. Anyone skilled in the art can easily consider the changes or Modifications can be covered by the patent scope of the following case.

Claims (13)

A carrier-controlled light-emitting diode lamp includes: at least one light-emitting diode; and a driving unit coupled to the light-emitting diode. The driving unit receives a carrier light-emitting signal to control the light-emitting diode to emit light. The driving unit includes: a light-emitting control unit for driving the light-emitting diode's light-emitting behavior according to the light-emitting command content of the carrier light-emitting signal; and a comparison unit that receives DC working power and compares it with a reference voltage value; Wherein, when the voltage value of the DC working power is greater than the reference voltage value, the comparison unit outputs a first control signal according to the content of the light emitting command of the carrier light emitting signal, so that the light emitting control unit enters the working mode; when the DC working power When the voltage value is less than the reference voltage value, the comparison unit outputs a second control signal to the light-emitting control unit, so that the light-emitting control unit enters a sleep mode, wherein the reference voltage value is greater than a reset voltage value of the driving unit. The carrier-controlled light-emitting diode lamp according to item 1 of the scope of the patent application, wherein the driving unit further includes: a single-bit signal processing unit, coupled to the light-emitting control unit and the comparison unit, and memorizing a light-emitting address The address signal processing unit receives a bit address signal transmitted from the light emitting control unit for comparison. When the address signal matches the light emitting address, the light emitting control unit drives the light emitting according to the light emitting command content of the carrier light emitting signal. The diode emits light; when the comparison unit outputs the second control signal to the address signal processing unit, the address signal processing unit enters the sleep mode until it receives the first control signal and enters the working mode. The carrier-controlled light-emitting diode lamp described in item 2 of the scope of the patent application, wherein the driving unit further includes: a bit address programming unit, which is coupled to the address signal processing unit and the comparison unit; wherein the carrier emits light The signal includes a programming start signal and a programming address signal. When the address programming unit receives the programming start signal, the address programming unit will change the content of the programming command according to the content of the programming command of the programming address signal. The light-emitting address is written into the address signal processing unit; when the comparison unit outputs the second control signal to the address programming unit, the address programming unit enters a sleep mode until the first control is received Enter the working mode after the signal. The carrier-controlled light-emitting diode lamp according to item 3 of the scope of patent application, wherein the driving unit further includes: an oscillator, coupled to the light-emitting control unit, the address signal processing unit, and the address burning unit And the comparison unit, wherein when the comparison unit outputs the second control signal to the oscillator, the oscillator enters a sleep mode and stops the oscillation operation, until it receives the first control signal and enters the operation mode to start the oscillation operation and provides a Oscillation signal; when the oscillator stops oscillating in the sleep mode, the light-emitting control unit, the address signal processing unit, and the address programming unit do not receive the oscillation signal provided by the oscillator and enter the sleep mode. The carrier-controlled light-emitting diode lamp according to item 1 of the scope of the patent application, wherein the driving unit further includes: a current detection unit coupled to the light-emitting control unit, wherein the light-emitting control unit passes the current detection unit After receiving the light emitting command content of the carrier light emitting signal, the light emitting diode is driven to emit light. According to the carrier-controlled light-emitting diode lamp described in item 5 of the scope of the patent application, the driving unit further includes: a discharge unit coupled to the comparison unit and the current detection unit; when the discharge unit receives the current When the carrier light-emitting signal transmitted by the detection unit, the discharge unit starts to discharge the DC operating power. The carrier-controlled light-emitting diode lamp according to item 1 of the scope of the patent application, wherein the driving unit further includes: a power capacitor coupled to the light-emitting control unit, the comparison unit, and the light-emitting diode. The carrier-controlled light-emitting diode lamp according to item 1 of the scope of the patent application, wherein the at least one light-emitting diode and the driving unit are disposed on a substrate in the form of surface-adhesive elements; the driving unit and the at least one The light emitting diodes are electrically connected in a wired manner and are packaged in a package. The carrier-controlled light-emitting diode lamp according to item 1 of the scope of the patent application, wherein the driving unit is electrically connected to a first platform, and the at least one light-emitting diode is electrically connected to a first platform. On two platforms; the driving unit and the at least one light emitting diode are electrically connected in a wired manner, and are packaged in a package body. A carrier-controlled light-emitting diode light string includes: a power line; a controller coupled to the power line; and at least one light-emitting diode light, the light-emitting diode light being the first item in the scope of patent application The carrier-controlled light-emitting diode lamp according to any one of item 9; the light-emitting diode lamp is coupled to the controller through the power line, and receives the DC transmitted by the controller through the power line The working power and the carrier light emission signal. The carrier-controlled light-emitting diode lamp string as described in item 10 of the scope of patent application, wherein the controller includes: a rectifier unit coupled to the power line to provide the DC working power; a switch connected to the power line And the light-emitting diode lamp; and a control unit coupled to the rectifier unit and the switch, wherein when the control unit controls the switch to be turned on, the DC working power forms a power supply for the light-emitting diode lamp through the power line. Power supply circuit; when the control unit wants to generate the carrier light emission signal, the control unit continuously switches the on and off of the switch according to the light emission command content of the carrier light emission signal, so that the DC working power of the power line forms a plurality of pulses The waves are combined into the carrier light-emitting signal and transmitted to the light-emitting diode lamp through the power line. For example, the carrier-controlled light-emitting diode lamp string described in the scope of the patent application, wherein the controller further includes: a discharge line, coupled to the power line and the control unit, when the switch is turned off, the controller drives The discharge line receives the DC working power and starts discharging the DC working power. For example, the carrier-controlled light-emitting diode lamp string described in the scope of the patent application, wherein the controller further includes: a voltage adjustment capacitor, coupled to the power line, when the switch is turned off, the voltage stabilizing capacitor is The diode lamp provides this DC working power.