CN-224232336-U - Display screen power supply control device and system

Abstract

The utility model discloses a display screen power supply control device and a system. The display screen power supply control device comprises a triode and a power supply control circuit, wherein the triode is connected with the power supply control circuit in parallel, the triode is provided with a base electrode pin, a collector electrode pin and an emitter electrode pin, the base electrode pin is used for being connected with a preset receiving card in series, the collector electrode pin is used for being connected with the output end of a signal output module, the emitter electrode pin is grounded, the power supply control circuit is provided with a field effect tube, the field effect tube is provided with a source electrode pin, a drain electrode pin and a grid electrode pin, the source electrode pin is used for being connected with a power supply interface of a display screen in series, the drain electrode pin is used for being connected with a first power supply in series, and the grid electrode pin is used for being connected with the output end of the signal output module. The utility model solves the technical problem of high equipment cost when the device with the level conversion circuit is used for controlling the power switch of the display screen in the related technology.

Inventors

• ZHAO ZILIANG
• SUN XUECHAO

Assignees

• 深圳利亚德光电有限公司

Dates

Publication Date

20260512

Application Date

20250520

Claims (10)

1. 1. The display screen power supply control device is characterized by comprising a triode (10) and a power supply control circuit (20), wherein the triode (10) is connected with the power supply control circuit (20) in parallel, The triode (10) is provided with a base pin, a collector pin and an emitter pin, wherein the base pin is used for being connected with a preset receiving card in series so as to control the conduction state of the triode (10) according to the received level signal of the preset receiving card, the collector pin is used for being connected with the output end of the signal output module, the emitter pin is grounded, The power supply control circuit (20) is provided with a field effect tube (30), the field effect tube (30) is provided with a source electrode pin, a drain electrode pin and a grid electrode pin, the source electrode pin is used for being connected with a power supply interface of the display screen in series, the drain electrode pin is used for being connected with a first power supply in series, and the grid electrode pin is used for being connected with an output end of the signal output module.
2. 2. The display screen power control device according to claim 1, further comprising a signal output module, wherein, The input end of the signal output module is used for being connected with a second power supply, the collector pin of the triode (10) and the grid pin of the field effect transistor (30) are connected in parallel and then are connected with the output end of the signal output module in series, the signal output module is used for converting a first voltage provided by the second power supply into a second voltage and applying the second voltage to a preset component, the preset component comprises one of the triode (10), the power supply control circuit (20) and the second voltage is used for adjusting the grid voltage of the field effect transistor (30) under the condition that the second voltage is applied to the field effect transistor (30) so as to control the conducting state of the field effect transistor (30).
3. 3. The display screen power control device of claim 2, wherein the signal output module further comprises: The signal output module comprises an inductor, a conversion chip and a diode, wherein the input end of the inductor, the input pin of the conversion chip and the enabling pin of the conversion chip are respectively connected with the second power supply, the switch pin of the conversion chip and the positive electrode of the diode are respectively connected with the output end of the inductor, the negative feedback pin of the conversion chip, and the collector pin of the triode (10) and the gate pin of the field effect transistor (30) are respectively connected with the negative electrode of the diode.
4. 4. The display screen power control device of claim 3, wherein the signal output module further comprises a capacitor, wherein, The input end of the capacitor is connected with the cathode of the diode, and the collector pin of the triode (10) and the grid pin of the field effect transistor (30) are connected in parallel and then connected with the output end of the capacitor in series, so that the fluctuation value of the second voltage output by the signal output module is smaller than a preset threshold value.
5. 5. The display screen power control apparatus according to claim 1, further comprising a predetermined receiving card, wherein, The preset receiving card is connected with the base electrode pin of the triode (10) in series to send out the level signal and control the conduction state of the triode (10).
6. 6. The display screen power control device of claim 1, further comprising a first power source, wherein, The first power supply is connected in series with a drain pin of the field effect transistor (30) to supply power to the display screen.
7. 7. The display screen power control device of claim 1, further comprising an overload protection device, wherein, The input end of the overload protection device is connected with a source pin connected with the field effect tube (30), and the output end of the overload protection device is used for being connected with a power interface of the display screen.
8. 8. The display screen power control device according to claim 1, further comprising a security chip, wherein, The output end of the safety chip is connected with the base electrode pin of the triode (10), and the input end of the safety chip is used for being connected with the preset receiving card.
9. 9. The display screen power control device of claim 1, further comprising a feedback adjustment module, wherein, The input end of the feedback regulation module is used for being connected with a signal interface of the display screen, and the output end of the feedback regulation module is used for being connected with the first power supply so as to regulate the output voltage of the first power supply according to a feedback signal received by the input end of the feedback regulation module.
10. 10. A display screen power supply control system comprising the display screen power supply control apparatus of claim 1, a first power supply, a predetermined receiving card, and a display screen, wherein, The display screen power supply control device is connected with the preset receiving card in series through a base electrode pin of the triode (10), the display screen power supply control device is connected with the first power supply in series through a drain electrode pin of the field effect tube (30), and the display screen power supply control device is connected with a power interface of the display screen in series through a source electrode pin of the field effect tube (30).

Description

Display screen power supply control device and system Technical Field The utility model relates to the field of computers, in particular to a display screen power supply control device and a display screen power supply control system. Background The accurate control of the display screen switch state has important significance for balancing the energy efficiency and the hardware life of the display screen equipment. At present, a device provided with a level conversion circuit between a signal receiving card and a field effect tube is mainly adopted to convert a low-level control signal of the receiving card, so that the control of the boosting field effect tube is completed, and the control of the power switch state of a display screen is realized. However, this device requires an additional level shifter circuit in the power control module, and is costly in terms of equipment. In view of the above problems, no effective solution has been proposed at present. Disclosure of utility model The embodiment of the utility model provides a display screen power supply control device and a display screen power supply control system, which at least solve the technical problem of high equipment cost when a device with a level conversion circuit is used for controlling a display screen power supply switch in the related technology. According to one aspect of the embodiment of the utility model, a display screen power supply control device and a system are provided, wherein the display screen power supply control device comprises a triode and a power supply control circuit, the triode is connected with the power supply control circuit in parallel, the triode is provided with a base pin, a collector pin and an emitter pin, the base pin is used for being connected with a preset receiving card in series so as to control the conduction state of the triode according to a received level signal of the preset receiving card, the collector pin is used for being connected with the output end of a signal output module, the emitter pin is grounded, the power supply control circuit is provided with a field effect transistor, the field effect transistor is provided with a source pin, a drain pin and a grid pin, the source pin is used for being connected with a power supply interface of a display screen in series, the drain pin is used for being connected with a first power supply in series, and the grid pin is used for being connected with the output end of the signal output module. Optionally, the display screen power supply control device further comprises a signal output module, wherein the input end of the signal output module is used for being connected with a second power supply, the collector pin of the triode and the grid pin of the field effect transistor are connected in parallel and then are connected with the output end of the signal output module in series, the signal output module is used for converting a first voltage provided by the second power supply into a second voltage and applying the second voltage to a preset component, and the preset component comprises one of the triodes, and the power supply control circuit is used for adjusting the grid voltage of the field effect transistor under the condition that the second voltage is applied to the field effect transistor so as to control the conduction state of the field effect transistor. Optionally, the signal output module further comprises an inductor, a conversion chip and a diode, wherein the input end of the inductor, the input pin of the conversion chip and the enabling pin of the conversion chip are respectively used for being connected with the second power supply, the switch pin of the conversion chip and the positive pole of the diode are respectively connected with the output end of the inductor, the negative feedback pin of the conversion chip, and the collector pin of the triode and the gate pin of the field effect transistor are respectively connected with the negative pole of the diode. Optionally, the signal output module further comprises a capacitor, wherein the input end of the capacitor is connected with the cathode of the diode, and the collector pin of the triode and the gate pin of the field effect transistor are connected in parallel and then connected with the output end of the capacitor in series, so that the fluctuation value of the second voltage output by the signal output module is smaller than a preset threshold value. Optionally, the display screen power supply control device further comprises a preset receiving card, wherein the preset receiving card is connected with the base electrode pin of the triode in series to send out the level signal so as to control the conduction state of the triode. Optionally, the display screen power supply control device further comprises a first power supply, wherein the first power supply is connected with the drain electrode pin of the field effect transistor in series to supply power for the displ