CN217904258U - OLED power supply circuit - Google Patents
OLED power supply circuit Download PDFInfo
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- CN217904258U CN217904258U CN202222288732.8U CN202222288732U CN217904258U CN 217904258 U CN217904258 U CN 217904258U CN 202222288732 U CN202222288732 U CN 202222288732U CN 217904258 U CN217904258 U CN 217904258U
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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
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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Abstract
The utility model discloses an OLED power supply circuit, which relates to the technical field of electronics and comprises a power module for supplying power; the input control module is used for input control; the voltage regulating module is used for voltage-stabilizing regulation; the positive voltage output module is used for filtering, voltage sampling processing and outputting positive voltage; the negative pressure regulation output module is used for performing electrode conversion treatment and voltage fine tuning; the output voltage detection module is used for sampling voltage and converting and sampling polarity voltage; the intelligent control module is used for receiving signals and controlling the module to work; and the OLED display module is used for controlling the OLED display device to work. The utility model discloses OLED power supply circuit carries out the steady voltage to required electric energy and handles, for the circuit provides steady voltage environment, provides positive and negative value voltage for OLED display module by malleation output module and negative pressure regulation control module simultaneously to adjust output module to the negative pressure and finely tune, avoid the output difference of negative pressure and malleation.
Description
Technical Field
The utility model relates to the field of electronic technology, specifically a OLED power supply circuit.
Background
In recent years, with the development of organic electronics, a novel Organic Light Emitting Diode (OLED) screen display technology is widely applied to the field of screen display by virtue of performance advantages of low cost, large area, full color, high brightness and the like, most of existing OLED power supply circuits adopt a power supply chip to provide a relatively precise recovery voltage value for an OLED, but due to lack of precision detection of negative voltage of the power supply circuit, fluctuation of a negative power supply easily and directly affects the driving current of the OLED, and then the display result is affected, and the display result of the OLED is also easily affected under the condition that absolute values of the positive voltage and the negative voltage are not equal for a long time, so that improvement is needed.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides a OLED power supply circuit to solve the problem that proposes in the above-mentioned background art.
According to the embodiment of the utility model provides an in, provide an OLED power supply circuit, this OLED power supply circuit includes: the system comprises a power supply module, an input control module, a voltage regulating module, a positive voltage output module, a negative voltage regulating output module, an output voltage detection module, an intelligent control module and an OLED display module;
the power supply module is used for carrying out voltage reduction, rectification and filtering processing on input electric energy;
the input control module is connected with the power supply module and is used for controlling the connection of the power supply module and the voltage regulation module;
the voltage regulation module is connected with the input control module and is used for performing voltage regulation on the electric energy output by the power supply module through a voltage controller;
the positive voltage output module is connected with the voltage regulating module and is used for filtering and sampling the electric energy output by the voltage regulating module;
the negative pressure regulation output module is connected with the voltage regulation module, and is used for performing electrode conversion processing on the electric energy output by the voltage regulation module and finely adjusting the voltage after the electrode conversion;
the output voltage detection module is connected with the positive voltage output module and the negative voltage regulation output module, and is used for sampling the voltage output by the positive voltage output module and converting the negative voltage output by the negative voltage regulation output module into positive voltage and sampling the positive voltage;
the intelligent control module is connected with the input control module, the output voltage detection module and the negative pressure regulation output module, is used for receiving a voltage signal sampled by the output voltage detection module and is used for controlling the work of the negative pressure regulation output module and the input control module;
the OLED display module is connected with the positive pressure output module and the negative pressure adjusting output module and used for receiving the voltage output by the positive pressure output module and the negative pressure adjusting output module and controlling the OLED display device to work.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses OLED power supply circuit passes through voltage regulation module and carries out the steady voltage processing to required electric energy, for follow-up circuit provides required steady voltage environment, provide positive and negative value voltage for OLED display module by malleation output module and negative pressure regulation control module simultaneously, cooperation output voltage detection module is adjusted positive and negative value voltage and is sampled, and adjust output module to the negative pressure by intelligent control module and finely tune, avoid the output difference of negative pressure and malleation, reduce the fluctuation rate of negative voltage, improve OLED's display accuracy and demonstration accuracy.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic block diagram of an OLED power supply circuit according to an embodiment of the present invention.
Fig. 2 is a circuit diagram of an OLED power supply circuit according to an embodiment of the present invention.
Fig. 3 is a circuit diagram of an input control module according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In embodiment 1, referring to fig. 1, an OLED power supply circuit includes: the device comprises a power supply module 1, an input control module 2, a voltage regulating module 3, a positive voltage output module 4, a negative voltage regulating output module 5, an output voltage detection module 6, an intelligent control module 7 and an OLED display module 8;
specifically, the power module 1 is configured to perform voltage reduction, rectification and filtering processing on input electric energy;
the input control module 2 is connected with the power supply module 1 and is used for controlling the connection between the power supply module 1 and the voltage regulation module 3;
the voltage regulation module 3 is connected with the input control module 2 and is used for performing voltage regulation on the electric energy output by the power supply module 1 through a voltage controller;
the positive voltage output module 4 is connected with the voltage regulating module 3 and is used for filtering and sampling the electric energy output by the voltage regulating module 3;
the negative pressure regulation output module 5 is connected with the voltage regulation module 3, and is used for performing electrode conversion processing on the electric energy output by the voltage regulation module 3 and finely adjusting the voltage after the electrode conversion;
the output voltage detection module 6 is connected with the positive voltage output module 4 and the negative voltage regulation output module 5, and is used for sampling the voltage output by the positive voltage output module 4, converting the negative voltage output by the negative voltage regulation output module 5 into positive voltage and sampling the positive voltage;
the intelligent control module 7 is connected with the input control module 2, the output voltage detection module 6 and the negative pressure regulation output module 5, is used for receiving a voltage signal sampled by the output voltage detection module 6, and is used for controlling the work of the negative pressure regulation output module 5 and the input control module 2;
and the OLED display module 8 is connected with the positive pressure output module 4 and the negative pressure adjusting output module 5 and used for receiving the voltage output by the positive pressure output module 4 and the negative pressure adjusting output module 5 and controlling the work of the OLED display device.
In a specific embodiment, the power module 1 may use a power input port, a transformer W, a rectifier T, and a filter capacitor C1 to complete processing of electrical energy; the intelligent control module 7 can adopt, but is not limited to, a single chip microcomputer, a DSP and other controllers to realize the receiving and processing of information and the control of the module.
In this embodiment, please refer to fig. 2 and fig. 3, the input control module 2 includes a fifteenth resistor R15, a sixteenth resistor R16, a seventeenth resistor R17, an eighteenth resistor R18, a first switch tube VT1, and a second power tube Q2;
specifically, the source of the second power tube Q2 and one end of the eighteenth resistor R18 are both connected to the power module 1, the drain of the second power tube Q2 is connected to the voltage regulation module 3, the gate of the second power tube Q2 is connected to the emitter of the first switch tube VT1 and is connected to the ground through the fifteenth resistor R15, the base of the first switch tube VT1 is connected to one end of the seventeenth resistor R17 and is connected to the ground through the sixteenth resistor R16, the other end of the seventeenth resistor R17 is connected to the intelligent control module 7, and the collector of the first switch tube VT1 is connected to the other end of the eighteenth resistor R18.
In a specific embodiment, the second power transistor Q2 may be a P-channel enhancement MOS transistor; the first switch tube VT1 may be an NPN transistor.
Further, the voltage regulation module 3 includes a first inductor L1, a voltage regulator U1, and a first voltage regulator VD1;
specifically, one end of the first inductor L1, the first end and the third end of the voltage regulator U1 are connected to the drain of the second power tube Q2, the fifth end of the voltage regulator U1 is grounded, the fourth end of the voltage regulator U1 and the cathode of the first voltage regulator VD1 are connected to the positive voltage output module 4, and the second end of the voltage regulator U1 is connected to the other end of the first inductor L1, the anode of the first voltage regulator VD1 and the negative voltage regulation output module 5.
In a specific embodiment, the voltage regulator U1 may be an AP3015 chip.
Further, the positive voltage output module 4 includes a first resistor R1, a second resistor R2, a third capacitor C3, a third resistor R3, and a fourth capacitor C4;
specifically, one end of the first resistor R1, one end of the third capacitor C3, and one end of the fourth capacitor C4 are all connected to the cathode of the first voltage regulator VD1, the other end of the first resistor R1, the other end of the third capacitor C3, one end of the second resistor R2, and one end of the third resistor R3 are all connected to the fourth terminal of the voltage regulator U1, and the other end of the second resistor R2, the other end of the third resistor R3, and the other end of the fourth capacitor C4 are all grounded.
In a specific embodiment, the first resistor R1 and the second resistor R2 form a resistor divider circuit.
Further, the negative pressure regulation output module 5 includes a second inductor L2, a first power tube Q1, a second capacitor C2, a first diode D1, a third inductor L3, a fourth resistor R4, a fifth resistor R5, a fifth capacitor C5, and a second diode D2; the OLED display module 8 includes an OLED display device;
specifically, one end of the second inductor L2 is connected to the second end of the voltage regulator U1, the other end of the second inductor L2 is connected to the drain of the first power tube Q1 and is connected to the anode of the first diode D1 and one end of the third inductor L3 through the second capacitor C2, the other end of the third inductor L3 is connected to one end of the fourth resistor R4, one end of the fifth resistor R5 and the cathode of the second diode D2, the other end of the fourth resistor R4 is connected to the other end of the fifth resistor R5 and the ground through the fifth capacitor C5, the cathode of the first diode D1 and the source of the first power tube Q1 are both grounded, the gate of the first power tube Q1 is connected to the intelligent control module 7, the anode of the second diode D2 is connected to the second end of the OLED display device and the output voltage detection module 6, the first end of the OLED display device is connected to the cathode of the first voltage regulator VD 1.
In an embodiment, the first power transistor Q1 may be a P-channel enhancement type junction field effect transistor.
Further, the output voltage detection module 6 includes a sixth resistor R6 and a seventh resistor R7;
specifically, one end of the sixth resistor R6 is connected to the first end of the OLED display device, and the other end of the sixth resistor R6 is connected to the intelligent control module 7 and is connected to the ground end through a seventh resistor R7.
In a specific embodiment, the sixth resistor R6 and the seventh resistor R7 form a resistor divider circuit, and are used to detect the voltage condition output by the positive voltage output module 4.
Further, the output voltage detection module 6 further includes an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, a twelfth resistor R12, a thirteenth resistor R13, a fourteenth resistor R14, a first operational amplifier OP1, and a first power VCC1;
specifically, one end of the eighth resistor R8 is connected to the anode of the second diode D2, the other end of the eighth resistor R8 is connected to the in-phase end of the first operational amplifier OP1, the inverting end of the first operational amplifier OP1 is connected to one end of the ninth resistor R9 and one end of the tenth resistor R10, and is connected to the output end of the first operational amplifier OP1 and one end of the thirteenth resistor R13 through the fourteenth resistor R14, the other end of the ninth resistor R9 and one end of the twelfth resistor R12 are grounded, the other end of the twelfth resistor R12 is connected to the other end of the thirteenth resistor R13 and the intelligent control module 7, and the other end of the tenth resistor R10 is connected to the first power VCC1.
In a specific embodiment, the voltage boost circuit formed by the first operational amplifier OP1 converts the input negative voltage into a positive voltage.
The utility model relates to an OLED power supply circuit, provide required electric energy by power module 1, and carry out steady voltage processing to the voltage of input by voltage controller, and by malleation output module 4 output positive pressure value, and adjust output module 5 output corresponding negative pressure value by the negative pressure, and detect the malleation value of malleation output module 4 output respectively by output voltage detection module 6, and the absolute value of the negative pressure of 5 output negative pressure of negative pressure regulation output module, and receive the processing by intelligent control module 7, when the malleation value is unequal with the negative pressure absolute value, intelligent control module 7 will adjust the conduction degree of first power tube Q1, so as to finely tune the negative pressure value, the negative pressure value of avoiding exporting appears undulant and leads to OLED display device's demonstration unusual, if when great when between malleation value and the negative pressure value absolute value, intelligent control module 7 will control first switch tube VT1 and switch on, control second power tube Q2's malleation is ended, make power module 1 stop to OLED display device power supply circuit, this OLED power supply circuit passes through voltage regulation module 3 and carries out required electric energy to carry out required electric energy and adjust the electric energy to the negative pressure processing, and carry out the negative pressure adjustment module and carry out the required negative pressure adjustment module to carry out the negative pressure adjustment and carry out the cooperation for the negative pressure adjustment module, and carry out the negative pressure adjustment module and carry out the negative pressure adjustment to adjust the negative pressure adjustment module and reduce the negative pressure output accuracy for OLED display module by OLED display module and adjust the negative pressure adjustment module.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present specification describes embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and it is to be understood that all embodiments may be combined as appropriate by one of ordinary skill in the art to form other embodiments as will be apparent to those of skill in the art from the description herein.
Claims (7)
1. An OLED power supply circuit, comprising: the system comprises a power supply module, an input control module, a voltage regulating module, a positive voltage output module, a negative voltage regulating output module, an output voltage detection module, an intelligent control module and an OLED display module;
the power supply module is used for carrying out voltage reduction, rectification and filtering processing on input electric energy;
the input control module is connected with the power supply module and is used for controlling the connection of the power supply module and the voltage regulation module;
the voltage regulation module is connected with the input control module and is used for performing voltage regulation on the electric energy output by the power supply module through a voltage controller;
the positive voltage output module is connected with the voltage regulating module and is used for filtering and sampling the electric energy output by the voltage regulating module;
the negative pressure regulation output module is connected with the voltage regulation module, and is used for performing electrode conversion processing on the electric energy output by the voltage regulation module and finely adjusting the voltage after the electrode conversion;
the output voltage detection module is connected with the positive voltage output module and the negative pressure regulation output module, and is used for sampling the voltage output by the positive voltage output module, converting the negative voltage output by the negative pressure regulation output module into positive voltage and sampling the positive voltage;
the intelligent control module is connected with the input control module, the output voltage detection module and the negative pressure regulation output module, is used for receiving a voltage signal sampled by the output voltage detection module and is used for controlling the work of the negative pressure regulation output module and the input control module;
the OLED display module is connected with the positive pressure output module and the negative pressure adjusting output module and used for receiving the voltage output by the positive pressure output module and the negative pressure adjusting output module and controlling the OLED display device to work.
2. The OLED power supply circuit according to claim 1, wherein the input control module comprises a fifteenth resistor, a sixteenth resistor, a seventeenth resistor, an eighteenth resistor, a first switch tube, a second power tube;
the source electrode of the second power tube and one end of the eighteenth resistor are connected with the power supply module, the drain electrode of the second power tube is connected with the voltage regulation module, the grid electrode of the second power tube is connected with the emitting electrode of the first switch tube and is connected with the ground end through the fifteenth resistor, the base electrode of the first switch tube is connected with one end of the seventeenth resistor and is connected with the ground end through the sixteenth resistor, the other end of the seventeenth resistor is connected with the intelligent control module, and the collector electrode of the first switch tube is connected with the other end of the eighteenth resistor.
3. The OLED power supply circuit of claim 2, wherein the voltage regulation module comprises a first inductor, a voltage regulator, a first voltage regulator tube;
one end of the first inductor, the first end and the third end of the voltage regulator are connected with the drain electrode of the second power tube, the fifth end of the voltage regulator is grounded, the fourth end of the voltage regulator and the cathode of the first voltage-stabilizing tube are connected with the positive voltage output module, and the second end of the voltage regulator is connected with the other end of the first inductor, the anode of the first voltage-stabilizing tube and the negative voltage regulation output module.
4. The OLED power supply circuit according to claim 3, wherein the positive voltage output module comprises a first resistor, a second resistor, a third capacitor, a third resistor, and a fourth capacitor;
one end of the first resistor, one end of the third capacitor and one end of the fourth capacitor are all connected with the cathode of the first voltage regulator tube, the other end of the first resistor, the other end of the third capacitor, one end of the second resistor and one end of the third resistor are all connected with the fourth end of the voltage regulator, and the other end of the second resistor, the other end of the third resistor and the other end of the fourth capacitor are all grounded.
5. The OLED power supply circuit according to claim 4, wherein the negative voltage regulation output module comprises a second inductor, a first power transistor, a second capacitor, a first diode, a third inductor, a fourth resistor, a fifth capacitor, and a second diode; the OLED display module comprises an OLED display device;
one end of the second inductor is connected with the second end of the voltage regulator, the other end of the second inductor is connected with a drain electrode of the first power tube and is connected with an anode of the first diode and one end of the third inductor through the second capacitor, the other end of the third inductor is connected with one end of the fourth resistor, one end of the fifth resistor and a cathode of the second diode, the other end of the fourth resistor is connected with the other end of the fifth resistor and the ground end through the fifth capacitor, the cathode of the first diode and the source electrode of the first power tube are grounded, the grid electrode of the first power tube is connected with the intelligent control module, the anode of the second diode is connected with the second end of the OLED display device and the output voltage detection module, and the first end of the OLED display device is connected with the cathode of the first voltage regulator tube.
6. The OLED power supply circuit according to claim 5, wherein the output voltage detection module comprises a sixth resistor, a seventh resistor;
one end of the sixth resistor is connected with the first end of the OLED display device, and the other end of the sixth resistor is connected with the intelligent control module and is connected with the ground end through a seventh resistor.
7. The OLED power supply circuit according to claim 5, wherein the output voltage detection module further comprises an eighth resistor, a ninth resistor, a tenth resistor, a twelfth resistor, a thirteenth resistor, a fourteenth resistor, a first operational amplifier, a first power supply;
one end of the eighth resistor is connected with the anode of the second diode, the other end of the eighth resistor is connected with the in-phase end of the first operational amplifier, the inverting end of the first operational amplifier is connected with one end of the ninth resistor and one end of the tenth resistor, the output end of the first operational amplifier and one end of the thirteenth resistor are connected through the fourteenth resistor, the other end of the ninth resistor and one end of the twelfth resistor are grounded, the other end of the twelfth resistor is connected with the other end of the thirteenth resistor and the intelligent control module, and the other end of the tenth resistor is connected with the first power supply.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222288732.8U CN217904258U (en) | 2022-08-30 | 2022-08-30 | OLED power supply circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222288732.8U CN217904258U (en) | 2022-08-30 | 2022-08-30 | OLED power supply circuit |
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| CN217904258U true CN217904258U (en) | 2022-11-25 |
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| CN202222288732.8U Active CN217904258U (en) | 2022-08-30 | 2022-08-30 | OLED power supply circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115800745A (en) * | 2023-01-29 | 2023-03-14 | 禹创半导体(深圳)有限公司 | Reverse buck-boost converter and power supply device of OLED equipment |
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2022
- 2022-08-30 CN CN202222288732.8U patent/CN217904258U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115800745A (en) * | 2023-01-29 | 2023-03-14 | 禹创半导体(深圳)有限公司 | Reverse buck-boost converter and power supply device of OLED equipment |
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