CN203243211U - Switching conversion circuit, standby circuit, standby power supply and liquid-crystal-display television - Google Patents
Switching conversion circuit, standby circuit, standby power supply and liquid-crystal-display television Download PDFInfo
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- CN203243211U CN203243211U CN2013201578518U CN201320157851U CN203243211U CN 203243211 U CN203243211 U CN 203243211U CN 2013201578518 U CN2013201578518 U CN 2013201578518U CN 201320157851 U CN201320157851 U CN 201320157851U CN 203243211 U CN203243211 U CN 203243211U
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- 238000001514 detection method Methods 0.000 claims abstract description 12
- 230000001939 inductive effect Effects 0.000 claims abstract description 3
- 239000003990 capacitor Substances 0.000 claims description 21
- 238000001914 filtration Methods 0.000 claims description 12
- 239000004973 liquid crystal related substance Substances 0.000 claims description 8
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The utility model discloses a switching conversion circuit, a standby circuit, a standby power supply and a liquid-crystal-display television. The switching conversion circuit is used for converting an input voltage to the needed different voltages via a transformer according to a pulse signal and outputting the different voltages; and an auxiliary winding is arranged in the transformer, and used for inducing to generate a voltage provided for the switching conversion circuit to work, and outputting the voltage to the switching conversion circuit. According to the switching conversion circuit, the standby circuit, the standby power supply and the liquid-crystal-display television disclosed by the utility model, the switching conversion circuit is improved to replace a standby power supply in the original power supply circuit, thus realizing simple circuit and low cost; the auxiliary winding is additionally arranged in the transformer of the switching conversion circuit, and used for providing a working voltage for the switching conversion circuit; and during overall working and standby processes, a zero-crossing detection circuit is additionally arranged to detect the auxiliary winding in real time and obtain a zero-crossing voltage signal, and the zero-crossing voltage signal is sent into the switching conversion circuit, thus ensuring that the switching conversion circuit is continuously in a working state.
Description
Technical Field
The utility model relates to a switch converting circuit, stand-by power supply and LCD TV.
Background
In the conventional large-size liquid crystal television power supply, because the power of the whole set is large (more than 75W), a special PFC control chip is required to be used for improving the PF value and ensuring the harmonic factor, and an LLC circuit provides the voltage required by a mainboard and an LED driving circuit. The whole power supply supplies power to the whole machine, and the LLC circuit is formed by the LLC chip, the transformer and the peripheral device and is used for supplying power to the secondary side after the primary side power supply is isolated and changed.
Meanwhile, in order to reduce standby power consumption (lower than 0.5W), a special standby power supply is needed. The standby power supply provides 0.5W of low power required by standby for the mainboard when the whole machine is in standby, and provides bias voltage for PFC and LLC after the whole machine starts to work. Fig. 1 shows an architecture diagram of a standby circuit in the prior art.
As shown in fig. 2, the conventional television standby power circuit is divided into a switching power circuit and an LED driving circuit, wherein the switching power circuit can be divided into a 300V forming circuit, a standby power circuit, a PFC switching circuit and an LLC switching circuit;
the 300V forming circuit rectifies 220V alternating current commercial power to obtain a 300V power supply, and the 300V power supply is sent to the standby power supply circuit and the PFC switch circuit, the standby power supply circuit outputs 5V-s of standby power supply to be used by a CPU of a main board, and simultaneously outputs VCC voltage of about 20V to provide working voltage for the PFC switch circuit and the LLC switch circuit. The PFC switch circuit outputs a PFC voltage of 380V to the LLC switch circuit. The LLC switch circuit outputs 84V and 12V voltages respectively for the LED drive circuit and the main board circuit after the MOS transistors V830 and V840 and the transformer T831 function, and the LED drive circuit outputs the voltage required by lighting the LED lamp strip.
SUMMERY OF THE UTILITY MODEL
To the above problem, an object of the present invention is to provide a switch converting circuit, a standby power supply and a liquid crystal television, which provide a simple circuit and a lower cost standby scheme.
In order to achieve the above object, the present invention provides a switching converter circuit, the switching converter circuit is used for converting an input voltage into a desired different voltage output through a transformer according to a pulse signal, the transformer is provided with an output winding, and the winding is used for inducing a voltage supplied to the switching converter circuit and outputting the voltage to the switching converter circuit.
Preferably, the starting circuit is further included for converting the input voltage into a starting voltage of the switching conversion circuit, and outputting the starting voltage to the switching conversion circuit for starting.
Preferably, the switching converter circuit is an LLC switching circuit.
Preferably, the LLC switch circuit is composed of an LLC drive circuit, an MOS half-bridge circuit, an LLC transformer, and is configured to convert an input voltage into different required voltage outputs through the LLC transformer according to a ripple signal, the output auxiliary winding is disposed in the LLC transformer, and further includes,
the starting circuit is used for converting the input voltage into a starting voltage of the LLC driving circuit and outputting the starting voltage to the LLC driving circuit for starting;
the zero-crossing detection circuit is used for detecting a zero-crossing voltage signal on the output winding, generating a pulse signal and transmitting the pulse signal to the LLC driving circuit for controlling the MOS half-bridge circuit to be switched on;
and the bias voltage circuit is used for transmitting the voltage induced by the output winding to the LLC driving circuit and the PFC driving circuit as working voltage.
Preferably, the starting circuit is at least composed of a constant current source and a capacitor, one end of the constant current source is connected with the input voltage, the other end of the constant current source is connected with one end of the capacitor, and the other end of the capacitor is grounded, so that the starting voltage of the LLC driving circuit is formed at two ends of the capacitor and is transmitted to the LLC driving circuit.
Preferably, the starting circuit is at least composed of a resistor and a capacitor, one end of the resistor is connected with the input voltage, and the other end of the resistor is grounded, so that the starting voltage required by the LLC driving circuit is formed at two ends of the capacitor and is transmitted to the LLC driving circuit.
In order to achieve the above object, the present invention provides a standby circuit, which at least comprises a rectifying and filtering circuit and a switching converting circuit, wherein the rectifying and filtering circuit is used for rectifying and filtering an input voltage and transmitting the input voltage to the switching converting circuit; the switch conversion circuit is used for converting input voltage into required different voltages through a transformer according to the pulse signal and outputting the different voltages, and the switch conversion circuit is the switch conversion circuit.
In order to achieve the above object, the present invention provides a standby power supply, which at least comprises a rectifying and filtering circuit, a PFC circuit and a switching and converting circuit as described above, wherein the rectifying and filtering circuit is configured to rectify and filter an input voltage and deliver the rectified and filtered input voltage to the PFC circuit; the PFC circuit is used for providing input voltage for the switch conversion circuit; the switch conversion circuit is used for converting the input voltage into different required voltage output through a transformer according to the pulse signal,
and the voltage induced and generated by the auxiliary winding in the switch conversion circuit is taken as working voltage to be transmitted to the switch conversion circuit and the PFC driving circuit, so that the switch conversion circuit generates standby voltage or main working voltage.
In order to achieve the above object, the present invention provides a liquid crystal display or a liquid crystal television, including a standby power supply, the standby power supply is the above standby power supply.
The utility model has the advantages that:
the utility model discloses a to switch converting circuit's improvement, replace the stand-by power supply among the original power supply circuit, accomplished that the circuit is simple, the cost is lower. An auxiliary winding is additionally arranged in a transformer of the switching conversion circuit, so that a working voltage is provided for the switching conversion circuit; in the working and standby processes of the whole machine, the zero-crossing detection circuit is additionally arranged to detect the auxiliary winding in real time to obtain a zero-crossing voltage signal and send the zero-crossing voltage signal to the switch conversion circuit, so that the switch conversion circuit is ensured to be continuously in a working state, and the high efficiency and the reliability are ensured.
Drawings
Fig. 1 is an architecture diagram of a prior art standby circuit of the present invention;
fig. 2 is a circuit diagram of a prior art standby circuit of the present invention;
fig. 3 is an architecture diagram of a standby circuit according to an embodiment of the present invention;
fig. 4 is a schematic circuit diagram according to embodiment 1 of the present invention;
fig. 5 is a schematic circuit diagram according to embodiment 3 of the present invention.
Detailed Description
The invention is further described with reference to the accompanying drawings.
The embodiment of the utility model provides a switch converting circuit, switch converting circuit is used for converting input voltage into required different voltage output through the transformer according to pulse signal, in addition be equipped with auxiliary winding in the transformer, this output auxiliary winding is used for obtaining the response and produces the voltage that provides switch converting circuit work and export for switch converting circuit. For different voltages converted by the transformer, the different voltages can be provided for the LED driving circuit on one hand, and then are transmitted to the LED lamp for lighting. The other side can provide working voltage for the mainboard (can stand by). When the switch conversion circuit is started, a starting circuit is needed for converting the input voltage into the starting voltage of the switch conversion circuit and outputting the starting voltage to the switch conversion circuit for starting.
The switch converting circuit has many different circuit forms to these different circuit forms adopt the utility model discloses the project organization in the scheme can reach a simple structure, the lower stand-by power supply circuit of cost. Here, the LLC switch circuit is used as an embodiment to explain, and fig. 3 is an architecture diagram of the LLC switch circuit according to the present invention, in which a stand-by power supply designed separately is removed compared with fig. 1, and a stand-by function of the stand-by power supply is realized by the LLC switch circuit.
Example 1, as shown in fig. 4:
the LLC switch circuit is composed of an LLC drive circuit, an MOS half-bridge circuit and an LLC transformer, and is used for converting input voltage into different required voltage outputs through the LLC transformer according to a pulse signal, the output auxiliary winding is arranged in the LLC transformer, and the LLC switch circuit also comprises a transformer,
the starting circuit is used for converting the input voltage into a starting voltage of the LLC driving circuit and outputting the starting voltage to the LLC driving circuit for starting;
the zero-crossing detection circuit is used for detecting a zero-crossing voltage signal on the auxiliary winding, generating a pulse signal and transmitting the pulse signal to the LLC driving circuit for controlling the MOS half-bridge circuit to be switched on;
and the bias voltage circuit is used for transmitting the voltage induced by the auxiliary winding to the LLC driving circuit and the PFC driving circuit as working voltage.
Wherein,
the starting circuit at least comprises a constant current source and a capacitor, wherein one end of the constant current source is connected with input voltage, the other end of the constant current source is connected with one end of the capacitor, and the other end of the capacitor is grounded, so that starting voltage required by the LLC driving circuit is formed at two ends of the capacitor and is transmitted to the LLC driving circuit.
The working principle of the LLC switching circuit in this embodiment is as follows:
a starting stage:
after voltage is accessed, power frequency voltage is transmitted to the LLC drive circuit to be started after being started by a constant current source and a capacitor, and then a start voltage is sent to the LLC drive circuit to start the LLC drive circuit, so that a control signal is sent to the MOS tube combination of the MOS half-bridge circuit to control the LLC drive circuit to be switched on. After the MOS tube is switched on, the power frequency voltage is connected into the LLC transformer through the MOS tube, the LLC transformer generates a bias voltage VCC under the common induction of the primary side main winding and the primary side auxiliary winding, and the bias voltage VCC is switched on and transmitted to the bias voltage circuit, and finally the bias voltage circuit transmits the bias voltage VCC to the LLC driving circuit and the PFC driving circuit to be used as working voltage.
And (3) a normal working stage:
the LLC transformer generates main input voltage under the common induction of the primary side main winding and the secondary side winding, the main input voltage is respectively supplied to the LED driving circuit and the main board to be used as working voltage, and the LED driving circuit inputs the voltage to light the LED lamp strip. In the working process of the whole machine, the zero-crossing detection circuit is used for detecting the zero-crossing voltage signal generated by the auxiliary winding in real time and transmitting the zero-crossing voltage signal to the LLC driving circuit to control the switching-on of the MOS half-bridge circuit, so that the smooth work of the whole machine is ensured.
A standby stage:
when the system is in standby state, the output load of the LLC switch circuit is reduced, and the LLC switch circuit enters a frequency hopping mode due to the system gain setting. The zero-crossing detection circuit detects that the auxiliary winding generates a zero-crossing voltage signal and transmits the zero-crossing voltage signal to the LLC driving circuit to control the switching-on of the MOS half-bridge circuit, so that the LLC switching circuit is ensured to continuously work and outputs a stable working voltage to the main board.
Example 2:
the LLC switch circuit is composed of an LLC drive circuit, an MOS half-bridge circuit and an LLC transformer, and is used for converting input voltage into different required voltage outputs through the LLC transformer according to a pulse signal, the auxiliary winding is arranged in the LLC transformer, and the LLC switch circuit also comprises a transformer,
the starting circuit is used for converting the input voltage into a starting voltage of the LLC driving circuit and outputting the starting voltage to the LLC driving circuit for starting;
the zero-crossing detection circuit is used for detecting a zero-crossing voltage signal on the auxiliary winding, generating a pulse signal and transmitting the pulse signal to the LLC driving circuit for controlling the MOS half-bridge circuit to be switched on;
and the bias voltage circuit is used for transmitting the voltage induced by the auxiliary winding to the LLC driving circuit and the PFC driving circuit as working voltage.
Wherein,
the starting circuit at least comprises a high resistor and a capacitor, wherein one end of the resistor is connected with input voltage, and the other end of the resistor is grounded, so that starting voltage required by the LLC driving circuit is formed at two ends of the capacitor and is transmitted to the LLC driving circuit.
The working principle of the LLC switching circuit in this embodiment is as follows:
a starting stage:
after voltage is accessed, power frequency voltage is transmitted to the LLC drive circuit to be started after being started through a high resistor and a capacitor, and then a start voltage is sent to the LLC drive circuit to start the LLC drive circuit, so that a control signal is sent to the MOS tube combination of the MOS half-bridge circuit to control the LLC drive circuit to be switched on. After the MOS tube is switched on, the power frequency voltage is connected into the LLC transformer through the MOS tube, the LLC transformer generates a bias voltage VCC under the common induction of the primary side main winding and the primary side auxiliary winding, and the bias voltage VCC is switched on and transmitted to the bias voltage circuit, and finally the bias voltage circuit transmits the bias voltage VCC to the LLC driving circuit and the PFC driving circuit to be used as working voltage.
And (3) a normal working stage:
the LLC transformer generates main input voltage under the common induction of the primary side main winding and the secondary side winding, the main input voltage is respectively supplied to the LED driving circuit and the main board to be used as working voltage, and the LED driving circuit inputs the voltage to light the LED lamp strip. In the working process of the whole machine, the zero-crossing detection circuit is used for detecting the zero-crossing voltage signal generated by the auxiliary winding in real time and transmitting the zero-crossing voltage signal to the LLC driving circuit to control the switching-on of the MOS half-bridge circuit, so that the smooth work of the whole machine is ensured.
A standby stage:
when the system is in standby state, the output load of the LLC switch circuit is reduced, and the LLC switch circuit enters a frequency hopping mode due to the system gain setting. The zero-crossing detection circuit detects that the auxiliary winding generates a zero-crossing voltage signal and transmits the zero-crossing voltage signal to the LLC driving circuit to control the switching-on of the MOS half-bridge circuit, so that the LLC switching circuit is ensured to continuously work and outputs a stable working voltage to the main board.
Example 3:
fig. 5 is a specific circuit diagram of the LLC circuit according to the present invention.
In the figure, N1 is an LLC control chip, V1 and V2 are LLC control main switch MOS transistors, D1 and D2 are internal freewheeling diodes of the MOS transistors, T1 is an LLC transformer, windings 1-3 are primary side main windings thereof, windings 10-12 and 6-8 are output windings thereof, windings 4-5 are auxiliary windings for providing Vcc voltages of PFC (whose components are not shown in the figure) and LLC, and chip ZVS pin is a zero-crossing signal detection pin.
A starting stage:
after an alternating current power supply is switched on, a high-voltage 100-300 (power frequency voltage subjected to rectification filtering) direct current power supply enters through an HD pin of a chip N1, a Vcc capacitor C4 of a GND pin of the chip is charged through a constant current source in the chip, when C4 is charged to the starting voltage of the chip, the chip starts to output switching pulses, main switches MOSV1 and V2 are alternately switched on, alternating current flows through a primary side main winding 1-3, alternating current voltage is induced by an auxiliary winding 4-5, and the alternating current voltage is supplied to the chip after rectification filtering, so that the starting and normal work of the chip are realized.
And (3) a normal working stage:
the transformer generates main input voltage under the common induction of the primary side main winding and the secondary side winding, the main input voltage is respectively supplied to the LED driving circuit and the main board to be used as working voltage, and the LED driving circuit inputs the voltage to light the LED lamp strip. In the working process of the whole machine, the ZVS pin of the chip is used for detecting that the auxiliary winding generates a zero-crossing voltage signal in real time and transmitting the zero-crossing voltage signal to the chip for controlling the MOS half-bridge circuit to be switched on, so that the smooth work of the whole machine is ensured.
A standby stage:
when the system is in standby state, the output load of the LLC switch circuit is reduced, and the LLC switch circuit enters a frequency hopping mode due to the system gain setting. The ZVS pin of the chip detects that the auxiliary winding generates a zero-crossing voltage signal and transmits the zero-crossing voltage signal to the chip for controlling the switching-on of the MOS half-bridge circuit, so that the LLC switching circuit is ensured to work continuously and a stable working voltage is output to the mainboard. Specifically, when the main board receives the remote control standby signal, the main board outputs a standby signal to the power panel, and simultaneously, the load of the main board or the backlight system is reduced or turned off. After the power panel receives the standby signal of the mainboard, the power panel cuts off the power supply of the Vcc of the PFC, and at the moment, the PFC stops working and enters a standby state. At the moment, the load of the LLC is lightened, the LLC naturally enters a frequency hopping mode, the high-voltage direct-current power supply recovers the power frequency rectified voltage (310V after 220V rectification and filtering), the LLC controls the on and off of the MOS by a zero-crossing signal detected by a chip ZVS pin, the switch is ensured to still work in the ZVS mode (the MOS is opened when the D-S voltage is 0V, so that the switching loss is the lowest), and the high efficiency and the reliability are ensured.
In order to achieve the above object, the present invention provides a standby power supply, which at least comprises a rectifying and filtering circuit, a PFC circuit and a switching and converting circuit as described above, wherein the rectifying and filtering circuit is configured to rectify and filter an input voltage and deliver the rectified and filtered input voltage to the PFC circuit; the PPC circuit is used for providing input voltage for the switch conversion circuit; the switch conversion circuit is used for converting the input voltage into different required voltage output through a transformer according to the pulse signal,
and the voltage induced and generated by the auxiliary winding in the switching conversion circuit is taken as working voltage to be transmitted to the switching conversion circuit and the PFC driving circuit, so that the switching conversion circuit generates standby voltage or main working voltage.
In order to achieve the above object, the present invention provides a liquid crystal display or a liquid crystal television, including a standby power supply, the standby power supply is the above standby power supply.
In order to achieve the above object, the present invention provides a standby method, including the above circuit, including the following steps:
the starting circuit generates and outputs working voltage for starting the switching conversion circuit, and the switching conversion circuit converts input voltage into different required voltages through a transformer according to the pulse signal and outputs the voltages;
the induced voltage obtained by the auxiliary winding in the transformer is supplied to the switch conversion circuit to continuously work and is output to the switch conversion circuit.
Preferably, the pulsating signal is generated by detecting the zero-crossing voltage signal generated by the auxiliary winding through a zero-crossing detection circuit and is transmitted to the switching conversion circuit.
The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.
Claims (8)
1. The switching conversion circuit is characterized in that the switching conversion circuit is an LLC switching circuit, an auxiliary winding is arranged in the transformer, and the winding is used for inducing and generating a voltage for the switching conversion circuit to work and outputting the voltage to the switching conversion circuit.
2. The switching converter circuit according to claim 1, further comprising a start circuit for converting the input voltage into a start voltage of the switching converter circuit and outputting the start voltage to the switching converter circuit for start.
3. The switching converter circuit according to claim 1, wherein said LLC switching circuit is composed of an LLC driving circuit, an MOS half-bridge circuit, an LLC transformer for converting an input voltage into a desired different voltage output by said LLC transformer according to a ripple signal, said auxiliary winding being disposed in said LLC transformer, and further comprising,
the starting circuit is used for converting the input voltage into a starting voltage of the LLC driving circuit and outputting the starting voltage to the LLC driving circuit for starting;
the zero-crossing detection circuit is used for detecting a zero-crossing voltage signal on the auxiliary winding, generating a pulse signal and transmitting the pulse signal to the LLC driving circuit for controlling the MOS half-bridge circuit to be switched on;
and the bias voltage circuit is used for transmitting the voltage induced by the auxiliary winding to the LLC driving circuit and the PFC driving circuit as working voltage.
4. The switching converter circuit according to claim 3, wherein said start circuit comprises at least a constant current source and a capacitor, one end of said constant current source is connected to the input voltage, the other end of said constant current source is connected to one end of said capacitor, and the other end of said capacitor is connected to ground, so that the start voltage required by the LLC drive circuit is formed across the capacitor and supplied to said LLC drive circuit.
5. The switching converter circuit according to claim 3, wherein the start-up circuit comprises at least a resistor and a capacitor, one end of the resistor is connected to the input voltage, and the other end of the resistor is connected to ground, so that the start-up voltage required by the LLC driving circuit is formed across the capacitor and is supplied to the LLC driving circuit.
6. A standby circuit at least comprises a rectification filter circuit and a switch conversion circuit, wherein the rectification filter circuit is used for rectifying and filtering input voltage and transmitting the input voltage to the switch conversion circuit; the switching conversion circuit is used for converting an input voltage into a required different voltage output through a transformer according to a pulse signal, and is characterized in that the switching conversion circuit is the switching conversion circuit in any one of claims 1 to 5.
7. A standby power supply, at least comprising a rectification filter circuit, a PFC circuit and the switching conversion circuit of claims 1-6, wherein the rectification filter circuit is used for rectifying and filtering an input voltage and delivering the input voltage to the PFC circuit; the PFC circuit is used for providing input voltage for the switch conversion circuit; the switch conversion circuit is used for converting input voltage into required different voltage output through a transformer according to the pulse signal,
and the voltage induced and generated by the auxiliary winding in the switching conversion circuit is taken as working voltage to be transmitted to the switching conversion circuit and the PFC driving circuit, so that the switching conversion circuit generates standby voltage or main working voltage.
8. A liquid crystal television comprising a standby power supply, wherein the standby power supply is the standby power supply of claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201578518U CN203243211U (en) | 2013-04-01 | 2013-04-01 | Switching conversion circuit, standby circuit, standby power supply and liquid-crystal-display television |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201578518U CN203243211U (en) | 2013-04-01 | 2013-04-01 | Switching conversion circuit, standby circuit, standby power supply and liquid-crystal-display television |
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| Publication Number | Publication Date |
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| CN203243211U true CN203243211U (en) | 2013-10-16 |
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| CN2013201578518U Expired - Lifetime CN203243211U (en) | 2013-04-01 | 2013-04-01 | Switching conversion circuit, standby circuit, standby power supply and liquid-crystal-display television |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105610315A (en) * | 2014-11-17 | 2016-05-25 | 英飞凌科技奥地利有限公司 | System and method for startup cell circuit |
| CN106488607A (en) * | 2016-09-09 | 2017-03-08 | 深圳创维－Rgb电子有限公司 | Switching Power Supply and television set |
| WO2018058861A1 (en) * | 2016-09-29 | 2018-04-05 | 深圳创维－Rgb电子有限公司 | Oled drive power device and oled television |
| WO2020047986A1 (en) * | 2018-09-07 | 2020-03-12 | 深圳创维－Rgb电子有限公司 | Oled driving power source and oled television |
| CN111246634A (en) * | 2020-01-15 | 2020-06-05 | 深圳市朗文科技实业有限公司 | Combined LED plant light supplementing system |
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2013
- 2013-04-01 CN CN2013201578518U patent/CN203243211U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105610315A (en) * | 2014-11-17 | 2016-05-25 | 英飞凌科技奥地利有限公司 | System and method for startup cell circuit |
| CN106488607A (en) * | 2016-09-09 | 2017-03-08 | 深圳创维－Rgb电子有限公司 | Switching Power Supply and television set |
| CN106488607B (en) * | 2016-09-09 | 2018-04-10 | 深圳创维－Rgb电子有限公司 | Switching Power Supply and television set |
| WO2018058861A1 (en) * | 2016-09-29 | 2018-04-05 | 深圳创维－Rgb电子有限公司 | Oled drive power device and oled television |
| US10694138B2 (en) | 2016-09-29 | 2020-06-23 | Shenzhen Chuangwei-Rgb Electronic Co., Ltd. | OLED drive power device and OLED television |
| WO2020047986A1 (en) * | 2018-09-07 | 2020-03-12 | 深圳创维－Rgb电子有限公司 | Oled driving power source and oled television |
| US11482166B2 (en) | 2018-09-07 | 2022-10-25 | Shenzhen Chuangwei-Rgb Electronic Co., Ltd | OLED driving power source and OLED television |
| CN111246634A (en) * | 2020-01-15 | 2020-06-05 | 深圳市朗文科技实业有限公司 | Combined LED plant light supplementing system |
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