CN201430651Y - Flat-TV-used ultra-low power standby LCD power supply and control circuit - Google Patents
Flat-TV-used ultra-low power standby LCD power supply and control circuit Download PDFInfo
- Publication number
- CN201430651Y CN201430651Y CN2009200613946U CN200920061394U CN201430651Y CN 201430651 Y CN201430651 Y CN 201430651Y CN 2009200613946 U CN2009200613946 U CN 2009200613946U CN 200920061394 U CN200920061394 U CN 200920061394U CN 201430651 Y CN201430651 Y CN 201430651Y
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- module
- digiboard
- main control
- control chip
- power
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Abstract
The utility model discloses a flat-TV-used ultra-low power standby LCD power supply and a control circuit. The power supply is connected with a digiboard module, and comprises a main control chip, a main power supply control circuit which is connected with the main control chip and used for supplying power for the digiboard module and LCD display backlighting, and a standby power supply control circuit for supplying standby power for the digiboard module, wherein both the main control chip and the digiboard module are in signal connection with an infrared receiving module and a key module, andthe alternative control of the on and off signal can be realized through the cooperation of the main control chip and the digiboard module. With the circuit and the control method of the utility model, the standby power of the flat-TV can only be decided by a power supply module and the infrared receiving module, and is not decided by the digiboard module, so the design of the digiboard module issimplified, the standardization of the digiboard module is facilitated, at the same time, the power supply module adopts an integrated chip for power management, the circuit of the power control partis simplified and the stable control performance is ensured.
Description
Technical field
The utility model relates to the panel TV electricity-saving control technology, specifically is meant a kind of power supply and control circuit of panel TV LCD display.
Background technology
In the daily life, the machine open/close of various household electrical appliance all is to adopt remote controller or the shift knob that is arranged on the electrical equipment is operated usually.Generally can further not operate behind this operation machine open/close, cut-out electrical equipment is connected with power supply.When for example panel TV set being shut down, usually adopt the remote controller remote control or press button closing television on the television set, at this moment, in fact just closed the governor circuit of panel TV and the power supply of back light system, and the still in running order or holding state of the standby power of panel TV and other auxiliary circuit.Therefore, adopt this shutdown mode to shut down, panel TV set still has the power consumption about 0.5W～8W.For other similar electrical equipment, there is the energy consumption problem under this holding state equally in above-mentioned shutdown mode.
The utility model content
The utility model is intended to solve the big problems of electric type stand-by power consumption such as panel TV, and then provides a kind of panel TV with realizing that power consumption is less than power supply and the control circuit of 0.1W under the holding state.
For addressing the above problem, the technical scheme that the utility model is taked is:
Panel TV super low-power consumption standby LCD power supply and control circuit, be connected with the digiboard module by signal, described circuit specifically comprises main control chip and is connected with main control chip and is used to digiboard module and the LCD display standby power control circuit that the main power source control circuit of working power is provided, standby power is provided for the digiboard module backlight; Described main control chip and digiboard module all are connected with infrared receiving module, key-press module signal, by the collaborative work of main control chip and digiboard module, realize the alternately control of switching on and shutting down signal.
In fact, be connected signal between the main control chip in described digiboard module and the power module and comprise digiboard module work triggering signal, operating state inverse signal and standby power signal etc.Each signal transmits in digiboard module and main control chip by signal transfer circuit separately, realization is by the very little main control chip standby monitoring starting-up signal of stand-by power consumption, when receiving start button or infrared starting-up signal, the 5VSB standby power is sent to digiboard (digiboard is changed to the open state that powers on), and electric power main circuit opened, button or the infrared signal control of will starting shooting at last given the digiboard module, by the control of shutting down of digiboard module monitors; When the digiboard module is received shutdown button or infrared off signal or active off signal, main control chip is monitored switching on and shutting down button or the withdrawal of infrared starting-up signal control again, simultaneously, the powered-down main circuit, and wait for the control mode of start button or infrared starting-up signal again.
Concrete, described main power source control circuit comprises the relay K that is controlled by main control chip, and described relay K intermediate contact is connected with AC power, and normally opened contact is connected with the electric power main circuit input.
The reverser that the switching on and shutting down signal PS_ON of described digiboard module constitutes through resistance R 401, R402, R404, triode Q411 and capacitor C 402 is sent to an I/O mouth of main control chip.
Described key-press module is connected by A/D port of signal deteching circuit and main control chip; The high or low level signal that described signal deteching circuit sends by main control chip the 2nd I/O mouth is through resistance R 436, R437, the Q402 conducting of triode Q403 triode or end, and then make diode D405 conducting or end the mode of operation of the current potential judgement start button of negative electrode when detecting diode D405 conducting by main control chip; Described diode D405 negative electrode connects key-press module and digiboard module simultaneously.
Described infrared receiving module sends starting-up signal IR to by resistance R 416 the 3rd I/O mouth of main control chip.
Infrared starting-up signal IR is reverse through the reverser that resistance R 418, R419, R435 and field effect transistor Q405 constitute in the described infrared receiving module, again through resistance R 420, R421, and the reverser that constitutes of field effect transistor Q406 reverse, finally send the digiboard module to by resistance R 422.
The one I/O mouth of described main control chip also by resistance R 423, R424 and then control triode Q407 by or conducting realize break-make to infrared receiving module and digiboard module by signal.
Described main control chip the 4th I/O mouth ends by resistance R 431, R432, R433, R434 and triode Q411 control field effect transistor Q412 realizes standby.
With respect to prior art, the beneficial effects of the utility model are:
1) described panel TV can be after receiving off signal with super low-power consumption standby LCD power supply and control circuit, thoroughly cut off the electricity supply from the mains electricity input end, have only only a few low-power consumption chip to be in holding state after the shutdown, greatly reduce the stand-by power consumption of panel TV complete machine, the complete machine stand-by power consumption is reduced to below the 0.1W, is beneficial to energy conservation;
2) the described control mode of the utility model makes panel TV complete machine stand-by power consumption only depend on power module and infrared receiving module, and irrelevant with the digiboard module, has so just simplified the digiboard module, is convenient to the standardization of digiboard module;
3) power module adopts integrated chip to carry out power management, has simplified the power control part parallel circuit, guarantees that control performance is stable.
Description of drawings
Fig. 1 is that the utility model principle and panel TV system form schematic block diagram;
Fig. 2 is LCD power supply and a panel TV system composition schematic block diagram in the prior art;
Fig. 3 is a power module control circuit schematic diagram described in the utility model.
Embodiment
For the ease of it will be appreciated by those skilled in the art that the utility model is described in further detail below in conjunction with drawings and Examples.
As shown in Figure 1, the utility model comprises main control chip 21 and the main power source control circuit, the standby power control circuit that are connected with main control chip; Wherein, main power source control circuit control electric power main circuit 6 provides working power for digiboard module 1 and LCD display backlight module 5; 5V power supply when standby power control circuit control standby power circuit 7 provides standby for digiboard module 1; Be connected with digiboard module 1 signal of panel TV in the circuit practical application described in the utility model; Main control chip 21 and digiboard module 1 also are connected with infrared receiving module 3, key-press module 4 signals simultaneously.
Described main power source control circuit adopts the relay K that is controlled by main control chip 21, and the relay K intermediate contact is connected with AC power, and normally opened contact is connected with electric power main circuit 6 inputs.Described standby power control circuit adopts a switch element K1, and the realization main control chip is treated the control of dynamo-electric source circuit 7, and this switch element K1 also can adopt electronic switching element.
Be connected signal between the main control chip 21 in digiboard module 1 and the power module 2 and comprise digiboard module work triggering signal, operating state inverse signal and standby power signal.Each signal circuit all has signal transmission channel separately.
As shown in Figure 2; in the prior art; panel TV LCD power supply control mode is: during standby, standby power circuit 7 keeps the 5V standby power to touch piece 3 for digiboard module 1, main power circuit 6, control and protective circuit 8 and infrared reception, makes four to be in the standby monitor state.When digiboard module 1 is received the triggering signal of infrared switch machine signal or switching on and shutting down button; send out a starting-up signal and give opening or closing of control and protective circuit 8 and then control main power circuit 6, the final purpose that realizes starting or closing LCD display backlight module 5 and 1 work of digiboard module.
As seen from Figure 2; under this control mode of prior art; the stand-by power consumption of panel TV complete machine depends on the stand-by power consumption of digiboard module 1, control and protective circuit 8, main power circuit 6 and infrared receiving module 3; if saves energy will be set about from the stand-by power consumption that reduces these four modules; relatively loaded down with trivial details; and because digiboard module 1 internal circuit complexity realizes reducing stand-by power consumption and being not easy.
With reference to Fig. 3, panel TV described in the utility model is as follows with the working method of super low-power consumption standby LCD power supply and control circuit: generally, have only main control chip 21 stand-by operation, the switching on and shutting down button triggering signal and the infrared switch machine signal of the described television set of main control chip 21 monitorings.When receiving switching on and shutting down button triggering signal or infrared switch machine signal PS_ON=1, main control chip 21 controls send the 5V standby power to digiboard module 1, and open main power circuit 6 by the main power source control circuit, give digiboard module 1 with switching on and shutting down button or infrared signal control simultaneously, by digiboard module 1 Monitoring and Controlling of shutting down.When digiboard module 1 is received shutdown button triggering signal or infrared off signal or is initiatively shut down, can send out off signal PS_ON=0 and give main control chip 21, at this moment will start shooting again button or infrared starting-up signal control of main control chip 21 regained and monitored, simultaneously, main power circuit 6 is closed in control, waits for start button or infrared starting-up signal again.Under the general state, panel TV inside has only main control chip 21 standby consumed powers like this, and the remaining circuit module all is in complete off-position.Main control chip 21 adopts CMOS technology to make, and under the holding state, power consumption is very little.Therefore, adopt power supply described in the utility model and control circuit that panel TV complete machine stand-by power consumption is reduced to below the 0.1W.
As shown in Figure 3, among the figure, interface CN407 is the interface that infrared receiving module 3 is connected with digiboard module 1; CN402 is the signal connecting interface of digiboard module 1 and main control chip 21; CN403 is the connecting interface of key-press module 4 and digiboard module; CN406 is the connecting interface of infrared receiving module 3 and main control chip 21 and digiboard module 1; CN404 is the connecting interface of key-press module 4 and main control chip 21.
When the utility model was specifically implemented, its operation principle was as follows:
The switching on and shutting down signal (PS_ON) of digiboard module 1 number behind the reverser that resistance R 401, R402, triode Q411, resistance R 404 and capacitor C 402 constitute goes out signal A2, signal A2 delivers to an IO mouth of main control chip 21 (U3), when U3 detects A2=1, the expression panel TV is in holding state, during A2=0, expression is in open state.
When A2=1, main control chip U3 is by being changed to high level with an IO mouth (C1), this high level signal makes triode Q403 saturation conduction by resistance R 436, R437, triode Q403, resistance R 439, R438 and triode Q402, then gives start button junction a current potential by resistance R 407, diode D405; This current potential also detects through the A/D thief hatch (A1) that resistance R 414, capacitor C 410 are delivered to main control chip U3 simultaneously.When A1 was numerical value less than certain voltage, main control chip is thought had the start key to press the operation of starting shooting accordingly; When A1 is numerical value greater than certain voltage, think that then not having the start key presses, and continues to detect.
When A2=0, main control chip U3 is by IO mouth (C1) is changed to low level C1=0, and by said process, triode Q403 ends, diode D405 also ends, thereby do not influence digiboard module 1 by the detection of interface CN403, realize the exchange of monitoring function the start button.
Claims (8)
1, panel TV super low-power consumption standby LCD power supply and control circuit, be connected with digiboard module (1) signal, it is characterized in that: described circuit comprises main control chip (21) and is connected with main control chip and is used to digiboard module and the LCD display standby power control circuit that the main power source control circuit of working power is provided, standby power is provided for the digiboard module backlight; Described main control chip (21) and digiboard module (1) all are connected with infrared receiving module (3), key-press module (4) signal, by the collaborative work of main control chip and digiboard module, realize the alternately control of switching on and shutting down signal.
2, panel TV according to claim 1 super low-power consumption standby LCD power supply and control circuit, it is characterized in that: described main power source control circuit comprises the relay K that is controlled by main control chip (21), the relay K intermediate contact is connected with AC power, and normally opened contact is connected with electric power main circuit (6) input.
3, panel TV according to claim 2 super low-power consumption standby LCD power supply and control circuit is characterized in that: the reverser that the switching on and shutting down signal PS_ON of described digiboard module (1) constitutes through resistance R 401, R402, R404, triode Q411 and capacitor C 402 is sent to an I/O mouth of main control chip (21).
4, panel TV according to claim 3 super low-power consumption standby LCD power supply and control circuit, it is characterized in that: described key-press module (4) is connected by (21) A/D ports of signal deteching circuit and main control chip; The high or low level signal that described signal deteching circuit sends by main control chip (21) the 2nd I/O mouth is through resistance R 436, R437, the Q402 conducting of triode Q403 triode or end, and then make diode D405 conducting or end the mode of operation of the current potential judgement start button of negative electrode when detecting diode D405 conducting by main control chip; Described diode D405 negative electrode connects key-press module (4) and digiboard module (1) simultaneously.
5, panel TV according to claim 4 super low-power consumption standby LCD power supply and control circuit, it is characterized in that: described infrared receiving module (3) sends starting-up signal IR to by resistance R 416 the 3rd I/O mouth of main control chip (1).
6, panel TV according to claim 5 super low-power consumption standby LCD power supply and control circuit, it is characterized in that: infrared starting-up signal IR is reverse through the reverser that resistance R 418, R419, R435 and field effect transistor Q405 constitute in the described infrared receiving module (3), again through resistance R 420, R421, and the reverser that constitutes of field effect transistor Q406 reverse, finally send digiboard module (1) to by resistance R 422.
7, panel TV according to claim 6 is characterized in that with super low-power consumption standby LCD power supply and control circuit: an I/O mouth of described main control chip (21) also by resistance R 423, R424 and then control triode Q407 by or conducting realize the break-make of infrared receiving module (3) with digiboard module (1) signal.
8, panel TV according to claim 7 super low-power consumption standby LCD power supply and control circuit is characterized in that: described main control chip (21) the 4th I/O mouth ends by resistance R 431, R432, R433, R434 and triode Q411 control field effect transistor Q412 realizes standby.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200613946U CN201430651Y (en) | 2009-07-25 | 2009-07-25 | Flat-TV-used ultra-low power standby LCD power supply and control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200613946U CN201430651Y (en) | 2009-07-25 | 2009-07-25 | Flat-TV-used ultra-low power standby LCD power supply and control circuit |
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| Publication Number | Publication Date |
|---|---|
| CN201430651Y true CN201430651Y (en) | 2010-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200613946U Expired - Lifetime CN201430651Y (en) | 2009-07-25 | 2009-07-25 | Flat-TV-used ultra-low power standby LCD power supply and control circuit |
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| CN (1) | CN201430651Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914987A (en) * | 2012-11-03 | 2013-02-06 | 福州福大海矽微电子有限公司 | Signal distribution isolation circuit applied to infrared signal standby control |
| CN103237246A (en) * | 2013-03-27 | 2013-08-07 | 深圳市九洲电器有限公司 | Set-top box actual standby and standby wake-up circuit and set-top box |
| WO2017084299A1 (en) * | 2015-11-16 | 2017-05-26 | 深圳Tcl数字技术有限公司 | Standby circuit and electronic device |
| CN109546843A (en) * | 2018-11-20 | 2019-03-29 | 广东长虹电子有限公司 | A kind of ultralow standby energy consumption power module |
| CN109713751A (en) * | 2019-01-07 | 2019-05-03 | 青岛朗兹环保科技有限公司 | A kind of battery low-power consumption standby control circuit and method |
| CN110599947A (en) * | 2019-08-15 | 2019-12-20 | 珠海格力电器股份有限公司 | Display screen on-off control circuit, display screen and control method |
| CN111831099A (en) * | 2020-07-06 | 2020-10-27 | Oppo广东移动通信有限公司 | Electronic device |
-
2009
- 2009-07-25 CN CN2009200613946U patent/CN201430651Y/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914987A (en) * | 2012-11-03 | 2013-02-06 | 福州福大海矽微电子有限公司 | Signal distribution isolation circuit applied to infrared signal standby control |
| CN103237246A (en) * | 2013-03-27 | 2013-08-07 | 深圳市九洲电器有限公司 | Set-top box actual standby and standby wake-up circuit and set-top box |
| CN103237246B (en) * | 2013-03-27 | 2016-07-06 | 深圳市九洲电器有限公司 | Set Top Box is very standby and standby wake up circuit and Set Top Box |
| WO2017084299A1 (en) * | 2015-11-16 | 2017-05-26 | 深圳Tcl数字技术有限公司 | Standby circuit and electronic device |
| CN109546843A (en) * | 2018-11-20 | 2019-03-29 | 广东长虹电子有限公司 | A kind of ultralow standby energy consumption power module |
| CN109713751A (en) * | 2019-01-07 | 2019-05-03 | 青岛朗兹环保科技有限公司 | A kind of battery low-power consumption standby control circuit and method |
| CN109713751B (en) * | 2019-01-07 | 2023-09-08 | 青岛朗兹环保科技有限公司 | Low-power consumption standby control circuit and method for battery |
| CN110599947A (en) * | 2019-08-15 | 2019-12-20 | 珠海格力电器股份有限公司 | Display screen on-off control circuit, display screen and control method |
| CN111831099A (en) * | 2020-07-06 | 2020-10-27 | Oppo广东移动通信有限公司 | Electronic device |
| CN111831099B (en) * | 2020-07-06 | 2022-05-31 | Oppo广东移动通信有限公司 | Electronic device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100324 |
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| CX01 | Expiry of patent term |