CN101771839B - Circuit for lowering liquid crystal display (LCD) TV standby power consumption - Google Patents
Circuit for lowering liquid crystal display (LCD) TV standby power consumption Download PDFInfo
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- CN101771839B CN101771839B CN200910189061.6A CN200910189061A CN101771839B CN 101771839 B CN101771839 B CN 101771839B CN 200910189061 A CN200910189061 A CN 200910189061A CN 101771839 B CN101771839 B CN 101771839B
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- 239000004973 liquid crystal related substance Substances 0.000 title abstract description 8
- 238000000034 method Methods 0.000 claims description 7
- 239000004821 Contact adhesive Substances 0.000 claims description 5
- 230000003321 amplification Effects 0.000 claims description 4
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 239000013078 crystal Substances 0.000 claims description 3
- 238000004146 energy storage Methods 0.000 claims description 3
- 230000000087 stabilizing effect Effects 0.000 claims description 2
- 238000004134 energy conservation Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005693 optoelectronics Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Abstract
The invention discloses a circuit for lowering liquid crystal display (LCD) TV standby power consumption, which solves the technical problem that electric energy is wasted when a TV is in the standby state. The invention adopts the following technical scheme that an independent direct-current power supply circuit is added in a circuit structure and provides direct-current working voltage for a standby control circuit and a relay circuit; the standby control circuit receives an infrared remote control coding signal sent by a remote control; the infrared remote control coding signal is processed by CPU to control the contact actuation of the relay so as to realize the connection or disconnection of a power-supply circuit and a mains supply. The invention has the advantages that the electric energy of the standby control circuit and the relay circuit is totally from a storage battery when a TV is in the standby state, and is completely disconnected with mains supply alternating current so as to further realize the purpose of energy saving; and a backlight circuit sends out invalid luminous energy, and meanwhile the use ratio of energy is improved.
Description
Technical field
The invention belongs to the application of liquid crystal TV set, be specifically related to the circuit that can reduce liquid crystal TV set standby energy consumption.
Background technology
Liquid crystal TV set is more and more popularized in family, and liquid crystal technology flat-panel television relatively in the past, outstanding advantage is power and energy saving.Liquid crystal display and flat-screen CRT monitor generally all have idle function, its standby principle is: after standby control module receives the standby signal that telepilot sends, send the drive end of level controling signal to relay, by the driving adhesive to relay, power module and televisor main circuit board is realized to disconnect, and power module also will work always, ensure as readiness control circuit powers to receive next telepilot start signal.Like this, because people do not form the custom of pulling out TV power supply or closing television general supply, long-term standby mode closing television, because the power module of televisor is also working always, also the electric energy spending of family can be increased, and these spendings are unnecessary beginnings, cause the waste of the energy.
Summary of the invention
The object of the invention is to solve further when televisor is in holding state to the wasting technical matters of electric energy, devise a kind of circuit reducing LCD TV stand-by power consumption, the light that backlight circuit in liquid crystal TV set sends can not 100% effectively to utilize, and therefore utilizes this part light source to realize energy-conservation object.
The technical scheme that the present invention realizes goal of the invention employing is, a kind of circuit reducing LCD TV stand-by power consumption, above circuit structure comprises power-supply circuit, with the motherboard circuit that LCD TV is supporting, with the readiness control circuit of CPU, relay circuit, and with LCD screen supporting backlight circuit, independent DC power supply circuit is set up in circuit structure, independent DC power supply circuit provides direct-current working volts for readiness control circuit and relay circuit, readiness control circuit receives the infrared remote coding signal that telepilot is sent, the contact adhesive of pilot relay after CPU process, and then realize the connection of power-supply circuit and mains supply, or disconnect.
The principle of foregoing circuit is: to TV SKD circuit in the past, the power module of readiness control circuit improves, relay is arranged between power-supply circuit and mains circuit, once power-supply circuit and mains circuit disconnect by relay, then power-supply circuit does not have electric energy loss, and readiness control circuit supplies DC voltage by independent DC power supply circuit, independent DC power supply circuit can adopt dry cell, regularly replace during use, also the combination of accumulator and solar cell can be adopted, wherein the electric energy of accumulator is then make use of the useless loss of the part of backlight circuit, be batteries to store energy after carrying out opto-electronic conversion by solar cell.
The invention has the beneficial effects as follows: when TV standby, the electric energy of readiness control circuit and relay circuit comes from accumulator completely, disconnects completely with mains electricity, furthermore achieved that energy-conservation object, utilize backlight circuit to send invalid luminous energy, also improve the utilization factor of the energy simultaneously.
Below in conjunction with accompanying drawing, the present invention is described in detail.
Accompanying drawing explanation
Fig. 1 is schematic block circuit diagram of the present invention.
Fig. 2 is the concrete principle embodiment of partial circuit of the present invention.
In accompanying drawing, 1 is power-supply circuit, and 2 is motherboard circuits, 3 is readiness control circuits, and 4 is relay circuits, and 5 is backlight circuits, 6 is independent DC power supply circuit, and VD is solar cell, and U is accumulator, R1-R5 is resistance, and C1, C2 are electric capacity, and D1-D3 is diode, Q1 is triode, L1 is inductance, and CY is crystal oscillator, and J is relay.
Embodiment
Referring to Fig. 1, a kind of circuit reducing LCD TV stand-by power consumption, above circuit structure comprises power-supply circuit 1, with the motherboard circuit 2 that LCD TV is supporting, readiness control circuit 3 with CPU, relay circuit 4, and with LCD screen supporting backlight circuit 5, independent DC power supply circuit 6 is set up in circuit structure, independent DC power supply circuit 6 provides direct-current working volts for readiness control circuit 3 and relay circuit 4, readiness control circuit 3 receives the infrared remote coding signal that telepilot is sent, the contact adhesive of pilot relay J after CPU process, and then realize the connection of power-supply circuit 1 and mains supply, or disconnect.
The principle of foregoing circuit is: to the motherboard circuit 2 of televisor in the past, the power module of readiness control circuit 3 improves, relay J is arranged between power-supply circuit 1 and mains circuit, once power-supply circuit 1 and mains circuit disconnect by relay J, then power-supply circuit 1 does not have electric energy loss, and readiness control circuit 3 supplies DC voltage by independent DC power supply circuit 6, independent DC power supply circuit 6 can adopt dry cell, regularly replace during use, also the combination of accumulator U and solar cell VD can be adopted, wherein the electric energy of accumulator U is then make use of the useless loss of the part of backlight circuit 5, be accumulator U energy storage after carrying out opto-electronic conversion by solar cell VD.
Referring to Fig. 2, the structure of above-mentioned independent DC power supply circuit 6 comprises solar cell VD, accumulator U and supporting rectification, voltage stabilizing, filter element, solar cell VD receives the useless light signal that backlight circuit 5 is launched, being converted to electric signal by charging diode D1 is accumulator U energy storage, and it is that readiness control circuit 3 is powered with relay circuit 4 that accumulator U output voltage exports DC power signal after dropping resistor R1 step-down.
Above-mentioned readiness control circuit 3 is made up of CPU and peripheral crystal oscillator element, and CPU receives the infrared encoded signal that telepilot is sent, and after process, control end sends a control signal to the input end of relay circuit 4.
The structure of above-mentioned relay circuit 4 comprises current amplification circuit, relay J and the peripheral matched diode D2 that triode Q1 and supporting resistance form, accumulator U is directly for relay J is powered, triode Q1 base stage receives the level controling signal that CPU sends, delivered to the drive end of relay J after amplification by collector, relay J realizes the logical or disconnected of electric main and power-supply circuit 1 by contact adhesive.
Circuit of the present invention in the specific implementation, when televisor receives the infrared signal that telepilot sends, transmission level control signal after CPU process, amplify after process through triode Q1, relay J adhesive is driven civil power and power-supply circuit 1 to be disconnected, now readiness control circuit 3 comes from accumulator U completely with the electric energy of relay circuit 4, disconnect completely with mains electricity, furthermore achieved that energy-conservation object, utilize backlight circuit 5 to send invalid luminous energy, also improve the utilization factor of the energy simultaneously.
Claims (4)
1. one kind is reduced the circuit of LCD TV stand-by power consumption, above circuit structure comprises power-supply circuit (1), the motherboard circuit (2) supporting with LCD TV, readiness control circuit (3) with CPU, relay circuit (4), the backlight circuit (5) supporting with LCD screen, and be that readiness control circuit (3) provides the independent DC power supply circuit (6) of direct-current working volts with relay circuit (4), readiness control circuit (3) receives the infrared remote coding signal that telepilot is sent, the contact adhesive of pilot relay (J) after CPU process, and then realize the connection of power-supply circuit (1) and mains supply, or disconnect, it is characterized in that: the structure of described independent DC power supply circuit (6) comprises solar cell (VD), accumulator (U) and supporting rectification, voltage stabilizing, filter element, solar cell (VD) receives the useless light signal that backlight circuit (5) is launched, being converted to electric signal by charging diode (D1) is accumulator (U) energy storage, it is that readiness control circuit (3) is powered with relay circuit (4) that accumulator (U) output voltage exports DC power signal after dropping resistor (R1) step-down.
2. a kind of circuit reducing LCD TV stand-by power consumption according to claim 1, is characterized in that: the structure of described independent DC power supply circuit (6) comprises one group of dry cell.
3. a kind of circuit reducing LCD TV stand-by power consumption according to claim 1, it is characterized in that: described readiness control circuit (3) is made up of CPU and peripheral crystal oscillator element, CPU receives the infrared encoded signal that telepilot is sent, and after process, control end sends a control signal to the input end of relay circuit (4).
4. a kind of circuit reducing LCD TV stand-by power consumption according to claim 1, it is characterized in that: the structure of described relay circuit (4) comprises the current amplification circuit that triode (Q1) forms with supporting resistance, relay (J) and peripheral matched diode (D2), accumulator (U) is directly relay (J) power supply, triode (Q1) base stage receives the level controling signal that CPU sends, delivered to the drive end of relay (J) by collector after amplification, relay (J) realizes the logical of electric main and power-supply circuit (1) by contact adhesive, or it is disconnected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910189061.6A CN101771839B (en) | 2009-12-18 | 2009-12-18 | Circuit for lowering liquid crystal display (LCD) TV standby power consumption |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910189061.6A CN101771839B (en) | 2009-12-18 | 2009-12-18 | Circuit for lowering liquid crystal display (LCD) TV standby power consumption |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101771839A CN101771839A (en) | 2010-07-07 |
| CN101771839B true CN101771839B (en) | 2015-04-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910189061.6A Active CN101771839B (en) | 2009-12-18 | 2009-12-18 | Circuit for lowering liquid crystal display (LCD) TV standby power consumption |
Country Status (1)
| Country | Link |
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| CN (1) | CN101771839B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI458221B (en) * | 2012-08-21 | 2014-10-21 | Wistron Corp | Electronic device, electronic system and operation method thereof |
| CN104749976A (en) * | 2015-02-09 | 2015-07-01 | 袁福德 | Computer power supply automatic management circuit system |
| CN104570888A (en) * | 2015-02-09 | 2015-04-29 | 袁福德 | Automatic management circuit system for computer power supply |
| CN106162339A (en) * | 2016-07-12 | 2016-11-23 | 乐视控股（北京）有限公司 | Stand-by circuit and electric terminal |
| CN107105178B (en) * | 2017-04-20 | 2019-07-02 | 深圳市华星光电技术有限公司 | TV set power |
| US10341602B2 (en) | 2017-04-20 | 2019-07-02 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | TV power supply |
| CN108737756A (en) * | 2018-04-24 | 2018-11-02 | 康佳集团股份有限公司 | A kind of power control method and its television set based on television set |
| CN110728938B (en) * | 2019-11-22 | 2022-04-19 | 深圳市洲明科技股份有限公司 | Display control system and display screen |
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| CN201307902Y (en) * | 2008-12-05 | 2009-09-09 | 深圳创维－Rgb电子有限公司 | TV set with zero power consumption when standing by |
| CN201328158Y (en) * | 2008-11-19 | 2009-10-14 | 深圳创维－Rgb电子有限公司 | Standby power-supply circuit and electronic device |
| CN201352308Y (en) * | 2008-11-14 | 2009-11-25 | 深圳市九洲电器有限公司 | Opto-electrical standby device, opto-electrical standby digital television set-top box and computer |
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- 2009-12-18 CN CN200910189061.6A patent/CN101771839B/en active Active
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|---|---|---|---|---|
| JP2001142067A (en) * | 1999-11-11 | 2001-05-25 | Nec Shizuoka Ltd | Self-feeding device |
| CN2419626Y (en) * | 2000-03-09 | 2001-02-14 | 神基科技股份有限公司 | Energy power supply recovering device for portable computer |
| CN2461060Y (en) * | 2000-11-28 | 2001-11-21 | 神基科技股份有限公司 | Energy recovery device of notebook type computer |
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| CN201352308Y (en) * | 2008-11-14 | 2009-11-25 | 深圳市九洲电器有限公司 | Opto-electrical standby device, opto-electrical standby digital television set-top box and computer |
| CN201328158Y (en) * | 2008-11-19 | 2009-10-14 | 深圳创维－Rgb电子有限公司 | Standby power-supply circuit and electronic device |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN101771839A (en) | 2010-07-07 |
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