CN204993623U - TV set and backlight time schedule control circuit thereof - Google Patents
TV set and backlight time schedule control circuit thereof Download PDFInfo
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- CN204993623U CN204993623U CN201520398946.8U CN201520398946U CN204993623U CN 204993623 U CN204993623 U CN 204993623U CN 201520398946 U CN201520398946 U CN 201520398946U CN 204993623 U CN204993623 U CN 204993623U
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Abstract
The utility model discloses a TV set and backlight time schedule control circuit thereof, this TV set backlight time schedule control circuit includes to be connected with a plurality of backlights, and be used for driving the constant current drive chip of each backlight, provide the clock circuit of synchronized clock signal for each constant current drive chip, a main control chip for controlling the work schedule of each constant current drive chip, be used for input power supply when opening, provide working power supply for main control chip, during the shutoff, sever supply main control chip's power supply's switching device and be used for detecting shutdown / the standby signal of TV set, and when detecting the shutdown of TV set / standby signal, the output switch signal, turn -off with the control switch device, make main control chip fall to reply by cable the signal trigger device of position. The utility model discloses a TV set shuts down or during the standby, its clock main control chip can in time fall to reply by cable the position, even and to make main control chip go up again in the short time electric, the in disorder problem of chronogenesis can not appear yet.
Description
Technical field
The utility model relates to field of television, particularly relates to a kind of TV backlight sequential control circuit and television set.
Background technology
At present, in television set, main integrally adjusting light or the local dimming of adopting reaches the details in a play not acted out on stage, but told through dialogues of display image.And local dimming because of have energy-conservation, display effect good and be used widely.
Wherein, the mode of local dimming mainly utilizes multiple constant-current driven chip to carry out the LED work of drive corresponding region, realize the display of corresponding region, and this mode greatly can improve the stereovision of image display.Further, when viewing area divides thinner, show levels is sympathetic better.But when there is multiple constant-current driven chip, just need to carry out sequencing control to each constant-current driven chip, and also need, when television set is started shooting again at every turn, to make timing recovery to initial condition, the display of guarantee backlight there will not be entanglement.
But in existing sequential control circuit, its sequential main control chip powers (being generally 12V) essentially by the power supply circuits of TV SKD, and most power supply circuits are energy storage output supply power mode, therefore, when television set shutdown or in standby a period of time, the energy that main control chip stores due to power supply circuits can not power-off reset in time, but when will wait until that operating voltage (being generally 3.3V) that energy that power supply circuits store drops to main control chip below, could power-off reset be realized.Like this, when just causing television set to re-power work at short notice, the sequential of main control chip does not return to initial condition, makes sequential entanglement, causes the problems such as display screen glimmers or viewing area is not corresponding.
Utility model content
Main purpose of the present utility model is to provide a kind of TV backlight sequential control circuit, be intended to realize television set shutdown or standby time, its clock main control chip can power-off reset in time, sequential entanglement when avoiding re-powering.
For achieving the above object, the TV backlight sequential control circuit that the utility model provides comprises and being connected with multiple backlight, and for driving the constant-current driven chip of backlight described in each, the clock circuit of synchronizing clock signals and the main control chip for the work schedule that controls constant-current driven chip described in each are provided to constant-current driven chip described in each; Described backlight sequential control circuit also comprises switching device and signal trigger equipment, described signal trigger equipment has one for detecting the input end of the shutdown/standby signal of television set, and the output of described signal trigger equipment is connected with the controlled end of described switching device; Described switching device has the power input for inputting power supply, and the output of described switching device is connected with the power end of described main control chip; Wherein,
Described switching device, for the input power supply when opening, provides working power to described main control chip, during shutoff, and the power supply of main control chip described in sever supply;
Described signal trigger equipment, for detecting the shutdown/standby signal of television set, and when the shutdown/standby signal of described television set being detected, output switching signal, turns off to control described switching device, makes described main control chip power-off reset.
Preferably, described switching device comprises the first switching tube, the first resistance, the second resistance and the 3rd resistance; The first end of described first resistance is the input of described switching device, second end of described first resistance is connected with the collector electrode of described first switching tube and the first end of the second resistance respectively, the output of the very described switching device of transmitting of described first switching tube, the base stage of described first switching tube is connected with the first end of described 3rd resistance, second end of described second resistance and the second end interconnection of the 3rd resistance, and one end of this interconnection is the controlled end of described switching device.
Preferably, described signal trigger equipment comprises second switch pipe, the 4th resistance, the 5th resistance and the first electric capacity, the first end of described 4th resistance is the input of described signal trigger equipment, and the second end of described 4th resistance is connected respectively with the base stage of described second switch pipe, the first end of the 5th resistance, the first end of the first electric capacity; The grounded emitter of described second switch pipe, the output of the very described signal trigger equipment of current collection of described second switch pipe; Second end of described 5th resistance and the second end of the first electric capacity ground connection respectively.
Preferably, described signal trigger equipment also comprises the first diode, and the anode of described first diode is the input of described signal trigger equipment, and the negative electrode of described first diode is connected with the first end of described 4th resistance.
Preferably, described TV backlight sequential control circuit also comprises and also comprises filter circuit, and described filter circuit comprises the 6th resistance and the second electric capacity; The first end of described 6th resistance is connected with the first end of described first resistance, and the second end of described 6th resistance is connected with the first end of described second electric capacity, the second end ground connection of described second electric capacity.
Preferably, described clock circuit comprises the first clock source exporting fixed clock signal, the second clock source exporting adjustable clock signal and diverter switch, the output of described first clock source is connected with the first input end of described diverter switch, the output in described second clock source is connected with the second input of described diverter switch, and the output of described diverter switch is connected with described constant-current driven chip; The output of described diverter switch is connected with constant-current driven chip described in each, and the controlled end of described diverter switch is electrically connected with described main control chip; Described diverter switch, for switching based on the control of described main control chip, to control described first clock source or second clock source clock signal to constant-current driven chip described in each.
Preferably, described second clock source comprises power supply, active oscillator, trigger, 7th resistance, 8th resistance, 9th resistance, tenth resistance, 3rd electric capacity, 4th electric capacity, 5th electric capacity and the 6th electric capacity, the supply pin of described active oscillator is connected with described power supply, and the supply pin of this active oscillator is also connected to ground through the 3rd electric capacity, the enable pin of described active oscillator is connected with described power supply through described 7th resistance, the grounding leg ground connection of described active oscillator, the output pin of described active oscillator is connected with the clock input pin of described trigger, the supply pin of described trigger is connected with described power supply, and between the supply pin of this trigger and ground, be also connected in parallel to the 4th electric capacity and the 5th electric capacity, wherein, described 4th electric capacity is polar capacitor, its positive pole is connected with the supply pin of described trigger, its minus earth, the data input pin NAND gate interconnection of described trigger, the set pin of described trigger is connected with described power supply through described 8th resistance, the resetting pin of described trigger is connected with described power supply through described 9th resistance, the grounding leg ground connection of described trigger, the output pin of described trigger is connected with the first end of described tenth resistance, second end of described tenth resistance is the output in described second clock source, is also connected with the 6th electric capacity between the output pin of described trigger and ground.
Preferably, the d type flip flop of described trigger to be model be SN74AUP1G74.
The utility model also provides a kind of television set, and this television set comprises TV backlight sequential control circuit as above; Described TV backlight sequential control circuit comprises and being connected with multiple backlight, and for driving the constant-current driven chip of backlight described in each, the clock circuit of synchronizing clock signals and the main control chip for the work schedule that controls constant-current driven chip described in each are provided to constant-current driven chip described in each; Described backlight sequential control circuit also comprises switching device and signal trigger equipment, described signal trigger equipment has one for detecting the input end of the shutdown/standby signal of television set, and the output of described signal trigger equipment is connected with the controlled end of described switching device; Described switching device has the power input for inputting power supply, and the output of described switching device is connected with the power end of described main control chip; Wherein, described switching device, for the input power supply when opening, provides working power to described main control chip, during shutoff, and the power supply of main control chip described in sever supply; Described signal trigger equipment, for detecting the shutdown/standby signal of television set, and when the shutdown/standby signal of described television set being detected, output switching signal, turns off to control described switching device, makes described main control chip power-off reset.
The utility model detects shutdown or the standby signal of television set by signalization trigger equipment, and when shutdown or the standby signal of television set being detected, control switch device cuts off the power supply that power supply circuits input to main control chip, make the timely power-off reset of main control chip, like this, not tube television receiver shutdown or how long standby, its main control chip is when re-powering work, sequential all can return to initial condition due to power-off reset, thus can not cause sequential entanglement.
Accompanying drawing explanation
Fig. 1 is the circuit structure block diagram of the utility model TV backlight sequential control circuit preferred embodiment;
Fig. 2 is the electrical block diagram of the utility model switching device and signal trigger equipment;
Fig. 3 is the structural representation of the utility model clock circuit;
Fig. 4 is the clock signal that exports of the utility model active oscillator and carry out the comparison of wave shape figure after two divided-frequency through trigger to this clock signal, and wherein Y1 represents the clock signal before frequency division, and Y2 represents the clock signal after frequency division.
Drawing reference numeral illustrates:
The realization of the utility model object, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
The utility model provides a kind of TV backlight sequential control circuit.
Referring to figs. 1 through Fig. 3, in one embodiment, described TV backlight sequential control circuit comprises and being connected with multiple backlight 100, and for driving the constant-current driven chip 200 of backlight 100 described in each, the clock circuit 300 of synchronizing clock signals and the main control chip 400 for the work schedule that controls constant-current driven chip 200 described in each are provided to constant-current driven chip described in each 200.
In order to realize main control chip 400 when television set shuts down or be standby, power-off reset, and ensure that sequential is normal, described backlight sequential control circuit also comprises for when opening, working power is provided to described main control chip 400, during shutoff, the switching device 500 of the working power of main control chip 400 described in sever supply and the shutdown/standby signal ON/OFF for detecting television set, and when the shutdown/standby signal ON/OFF of television set being detected, output switching signal, to control the signal trigger equipment 600 that described switching device 500 turns off.Understandable, when switching device 500 turns off, the power supply inputing to main control chip 400 disconnects, make master control chip 400 power-off reset, when main control chip 400 powers at short notice again, sequential just returns to initial condition, thus can not cause sequential entanglement.
Particularly, this signal trigger equipment 600 has one for detecting the input end of the shutdown/standby signal ON/OFF of television set; The output of described signal trigger equipment 600 is connected with the controlled end of described switching device 500; Described switching device 500 has the power input VCC-IN for inputting power supply, and the output VCC-OUT of described switching device 500 is connected with the power end of described main control chip 400.
Wherein, switching device 500 comprises the first switching tube Q1, the first resistance R1, the second resistance R2 and the 3rd resistance R3; The first end of described first resistance R1 is the input of described switching device 500, second end of described first resistance R1 is connected with the collector electrode of described first switching tube Q1 and the first end of the second resistance R2 respectively, the output of the very described switching device 500 of transmitting of described first switching tube Q1, the base stage of described first switching tube Q1 is connected with the first end of described 3rd resistance R3, second end of described second resistance R2 and the second end interconnection of the 3rd resistance R3, and one end of this interconnection is the controlled end of described switching device 500.First switching tube Q1 is preferably triode, this first switching tube Q1 is when the first end (being also the power input VCC-IN of switching device 500) of the first resistance R1 has power supply to input, by the first resistance R1, the second resistance R2 and the 3rd resistance R3, this power supply is inputed to the base stage of this first switching tube Q1, make its base stage be in high level state always, now the first switching tube Q1 opens, power supply is supplied main control chip 400, main control chip 400 is normally worked.
Above-mentioned signal trigger equipment 600 comprises second switch pipe Q2, the 4th resistance R4, the 5th resistance R5 and the first electric capacity C1, the first end of described 4th resistance R4 is the input of described signal trigger equipment 600, and second end of described 4th resistance R4 is connected respectively with the base stage of described second switch pipe Q2, the first end of the 5th resistance R5, the first end of the first electric capacity C1; The grounded emitter of described second switch pipe Q2, the output of the very described signal trigger equipment 600 of current collection of described second switch pipe Q2; Second end of described 5th resistance R5 and second end of the first electric capacity C1 ground connection respectively.Second switch pipe Q2 is preferably triode, as the shutdown/standby signal ON/OFF of the input input high level of signal trigger equipment 600, second switch pipe Q2 opens, by the base earth of the first switching tube Q1, its base stage is made to change low level state into by high level state, thus realize control first switching tube Q1 and turn off, the power supply making input not by, and then make master control chip 400 power-off reset.
The utility model detects shutdown or the standby signal ON/OFF of television set by signalization trigger equipment 600, and when shutdown or the standby signal ON/OFF of television set being detected, control switch device 500 cuts off the power supply that power supply circuits input to main control chip 400, make main control chip 400 power-off reset in time, like this, not tube television receiver shutdown or how long standby, its main control chip 400 is when re-powering work, sequential all can return to initial condition due to power-off reset, thus can not cause sequential entanglement.
Further, above-mentioned signal trigger equipment 600 also comprises the first diode D1, and the anode of described first diode D1 is the input of described signal trigger equipment 600, and the negative electrode of described first diode D1 is connected with the first end of described 4th resistance R4.This first diode D1 is used for anti-stop signal and pours in down a chimney, and affects prime open and close machine or readiness control circuit.
Further, described TV backlight sequential control circuit also comprises filter circuit 700, and described filter circuit 700 comprises the 6th resistance R6 and the second electric capacity C2; The first end of described 6th resistance R6 is connected with the first end of described first resistance R1, and second end of described 6th resistance R6 is connected with the first end of described second electric capacity C2, the second end ground connection of described second electric capacity C2.This filter circuit 700 forms RC filter, for suppressing the high frequency spurs in circuit by the 6th resistance R6 and the second electric capacity C2.
Further, described clock circuit 300 comprises the first clock source 31 exporting fixed clock signal, the second clock source 32 exporting adjustable clock signal and diverter switch 33, the output of described first clock source 31 is connected with the first input end of described diverter switch 33, the output in described second clock source 32 is connected with the second input of described diverter switch 33, and the output of described diverter switch 33 is connected with described constant-current driven chip 200; The output of described diverter switch 33 is connected with constant-current driven chip described in each 200, and the controlled end of described diverter switch 33 is electrically connected with described main control chip 400; Described diverter switch 33, for switching based on the control of described main control chip 400, to control described first clock source 31 or second clock source 32 clock signal to constant-current driven chip described in each 200.
Object in the present embodiment is, provides the clock signal of fixed frequency to constant-current driven chip 200 by the first clock source 31.When the clock signal that the first clock source 31 provides can not meet the demand of backlight, then switch to second clock source 32 by controlling diverter switch 33, second clock source 32 is active output, provides the clock signal of an adjustable frequency, ensures that constant-current driven chip 200 normally works.This configuration mode, more flexibly, improves the versatility of circuit.
It should be noted that, in the present embodiment, the first clock source 31 can adopt signal generator to realize, and second clock source 32 specifically adopts following circuit structure to realize, as Fig. 3, described second clock source 32 comprises DC power supply VCC, active oscillator X1, trigger RS, 7th resistance R7, 8th resistance R8, 9th resistance R9, tenth resistance R10, 3rd electric capacity C3, 4th electric capacity C4, 5th electric capacity C5 and the 6th electric capacity C6, the supply pin VDD1 of described active oscillator X1 is connected with described DC power supply VCC, and the supply pin VDD1 of this active oscillator X1 is also connected to ground through the 3rd electric capacity C3, the enable pin OE of described active oscillator X1 is connected with described DC power supply VCC through described 7th resistance R7, the grounding leg GND ground connection of described active oscillator X1, the output pin OUT of described active oscillator X1 is connected with the clock input pin CLK of described trigger RS, the supply pin VDD2 of described trigger RS is connected with described DC power supply VCC, and between the supply pin VDD2 of this trigger RS and ground, be also connected in parallel to the 4th electric capacity C4 and the 5th electric capacity C5, wherein, described 4th electric capacity C4 is polar capacitor, its positive pole is connected with the supply pin of described trigger RS, its minus earth, the data input pin D NAND gate of described trigger RS
interconnection, the set pin of described trigger RS
be connected with described DC power supply VCC through described 8th resistance R8, the resetting pin of described trigger RS
be connected with described DC power supply VCC through described 9th resistance R9, the grounding leg GND ground connection of described trigger RS, the output pin Q of described trigger RS is connected with the first end of described tenth resistance R10, second end of described tenth resistance R10 is the output in described second clock source 32, is also connected with the 6th electric capacity C6 between the output pin Q of described trigger RS and ground.Wherein, described trigger RS is preferably the d type flip flop RS that model is SN74AUP1G74.Frequency-halving circuit is formed by this trigger RS, constant-current driven chip 200 is supplied to after the frequency halving of the clock signal exported by active oscillator X1, such as, when active oscillator X1 exports the clock signal of 1 megahertz, 5000 hertz are changed into, as shown in Figure 4 after carrying out two divided-frequency by this trigger RS.Certainly different backlights 100, can configure accordingly according to actual needs, not limit herein.Be understandable that, the clock frequency provided by active oscillator X1 ensure that constant-current driven chip 200 steady operation.
In addition, second end of described tenth resistance R10 is also connected to ground by one the 7th electric capacity C7, carries out filtering process with the signal exported the output in this second clock source 32.
The utility model also provides a kind of television set, and this television set comprises above-mentioned TV backlight sequential control circuit, and the detailed construction of described TV backlight sequential control circuit can refer to above-described embodiment, repeats no more herein; Be understandable that, owing to employing above-mentioned TV backlight sequential control circuit in a television set, therefore, the embodiment of this television set comprises whole technical schemes of the whole embodiment of above-mentioned TV backlight sequential control circuit, and the technique effect reached is also identical, does not repeat them here.
Should be noted that; the technical scheme of each embodiment of the present utility model can be combined with each other; but must be can be embodied as basis with those skilled in the art; when technical scheme combination occur conflicting maybe cannot realize time people should think that the combination of this technical scheme does not exist, also not the utility model require protection range within.
These are only preferred embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model specification and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (9)
1. a TV backlight sequential control circuit, comprise and being connected with multiple backlight, and for driving the constant-current driven chip of backlight described in each, the clock circuit of synchronizing clock signals and the main control chip for the work schedule that controls constant-current driven chip described in each are provided to constant-current driven chip described in each; It is characterized in that, described backlight sequential control circuit also comprises switching device and signal trigger equipment, described signal trigger equipment has one for detecting the input end of the shutdown/standby signal of television set, and the output of described signal trigger equipment is connected with the controlled end of described switching device; Described switching device has the power input for inputting power supply, and the output of described switching device is connected with the power end of described main control chip; Wherein,
Described switching device, for the input power supply when opening, provides working power to described main control chip, during shutoff, and the power supply of main control chip described in sever supply;
Described signal trigger equipment, for detecting the shutdown/standby signal of television set, and when the shutdown/standby signal of described television set being detected, output switching signal, turns off to control described switching device, makes described main control chip power-off reset.
2. TV backlight sequential control circuit as claimed in claim 1, it is characterized in that, described switching device comprises the first switching tube, the first resistance, the second resistance and the 3rd resistance; The first end of described first resistance is the input of described switching device, second end of described first resistance is connected with the collector electrode of described first switching tube and the first end of the second resistance respectively, the output of the very described switching device of transmitting of described first switching tube, the base stage of described first switching tube is connected with the first end of described 3rd resistance, second end of described second resistance and the second end interconnection of the 3rd resistance, and one end of this interconnection is the controlled end of described switching device.
3. TV backlight sequential control circuit as claimed in claim 2, it is characterized in that, described signal trigger equipment comprises second switch pipe, the 4th resistance, the 5th resistance and the first electric capacity, the first end of described 4th resistance is the input of described signal trigger equipment, and the second end of described 4th resistance is connected respectively with the base stage of described second switch pipe, the first end of the 5th resistance, the first end of the first electric capacity; The grounded emitter of described second switch pipe, the output of the very described signal trigger equipment of current collection of described second switch pipe; Second end of described 5th resistance and the second end of the first electric capacity ground connection respectively.
4. TV backlight sequential control circuit as claimed in claim 3, it is characterized in that, described signal trigger equipment also comprises the first diode, the anode of described first diode is the input of described signal trigger equipment, and the negative electrode of described first diode is connected with the first end of described 4th resistance.
5. TV backlight sequential control circuit as claimed in claim 4, it is characterized in that, described TV backlight sequential control circuit also comprises filter circuit, and described filter circuit comprises the 6th resistance and the second electric capacity; The first end of described 6th resistance is connected with the first end of described first resistance, and the second end of described 6th resistance is connected with the first end of described second electric capacity, the second end ground connection of described second electric capacity.
6. the TV backlight sequential control circuit as described in claim 1 to 5 any one, it is characterized in that, described clock circuit comprises the first clock source exporting fixed clock signal, the second clock source exporting adjustable clock signal and diverter switch, the output of described first clock source is connected with the first input end of described diverter switch, the output in described second clock source is connected with the second input of described diverter switch, and the output of described diverter switch is connected with described constant-current driven chip; The output of described diverter switch is connected with constant-current driven chip described in each, and the controlled end of described diverter switch is electrically connected with described main control chip; Described diverter switch, for switching based on the control of described main control chip, to control described first clock source or second clock source clock signal to constant-current driven chip described in each.
7. TV backlight sequential control circuit as claimed in claim 6, it is characterized in that, described second clock source comprises power supply, active oscillator, trigger, 7th resistance, 8th resistance, 9th resistance, tenth resistance, 3rd electric capacity, 4th electric capacity, 5th electric capacity and the 6th electric capacity, the supply pin of described active oscillator is connected with described power supply, and the supply pin of this active oscillator is also connected to ground through the 3rd electric capacity, the enable pin of described active oscillator is connected with described power supply through described 7th resistance, the grounding leg ground connection of described active oscillator, the output pin of described active oscillator is connected with the clock input pin of described trigger, the supply pin of described trigger is connected with described power supply, and between the supply pin of this trigger and ground, be also connected in parallel to the 4th electric capacity and the 5th electric capacity, wherein, described 4th electric capacity is polar capacitor, its positive pole is connected with the supply pin of described trigger, its minus earth, the data input pin NAND gate interconnection of described trigger, the set pin of described trigger is connected with described power supply through described 8th resistance, the resetting pin of described trigger is connected with described power supply through described 9th resistance, the grounding leg ground connection of described trigger, the output pin of described trigger is connected with the first end of described tenth resistance, second end of described tenth resistance is the output in described second clock source, is also connected with the 6th electric capacity between the output pin of described trigger and ground.
8. TV backlight sequential control circuit as claimed in claim 7, is characterized in that, the d type flip flop of described trigger to be model be SN74AUP1G74.
9. a television set, is characterized in that, comprises the TV backlight sequential control circuit as described in claim 1 to 8 any one.
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| CN201520398946.8U CN204993623U (en) | 2015-06-10 | 2015-06-10 | TV set and backlight time schedule control circuit thereof |
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| CN201520398946.8U CN204993623U (en) | 2015-06-10 | 2015-06-10 | TV set and backlight time schedule control circuit thereof |
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| CN106412379A (en) * | 2016-09-20 | 2017-02-15 | 青岛海信电器股份有限公司 | Control method and device for realizing frequency synchronization and liquid crystal display television |
| CN106448586A (en) * | 2016-09-27 | 2017-02-22 | 青岛海信电器股份有限公司 | Liquid crystal apparatus and liquid crystal screen power supply switch control method |
| CN107885108A (en) * | 2017-12-18 | 2018-04-06 | 深圳科立讯通信有限公司 | The control device of electronic equipment |
| CN109061265A (en) * | 2018-08-31 | 2018-12-21 | 无锡华润矽科微电子有限公司 | Unused time controllable multimeter control circuit |
| CN109754759A (en) * | 2017-11-08 | 2019-05-14 | 京东方科技集团股份有限公司 | Backlight source control device, method and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106412379A (en) * | 2016-09-20 | 2017-02-15 | 青岛海信电器股份有限公司 | Control method and device for realizing frequency synchronization and liquid crystal display television |
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| CN106412379B (en) * | 2016-09-20 | 2019-02-15 | 青岛海信电器股份有限公司 | Realize control method, device and the LCD TV of Frequency Synchronization |
| CN106448586A (en) * | 2016-09-27 | 2017-02-22 | 青岛海信电器股份有限公司 | Liquid crystal apparatus and liquid crystal screen power supply switch control method |
| CN106448586B (en) * | 2016-09-27 | 2019-06-28 | 青岛海信电器股份有限公司 | The method of controlling switch of the power supply of liquid-crystal apparatus and liquid crystal display |
| CN109754759A (en) * | 2017-11-08 | 2019-05-14 | 京东方科技集团股份有限公司 | Backlight source control device, method and display device |
| CN109754759B (en) * | 2017-11-08 | 2020-11-06 | 京东方科技集团股份有限公司 | Backlight source control device and method and display device |
| CN107885108A (en) * | 2017-12-18 | 2018-04-06 | 深圳科立讯通信有限公司 | The control device of electronic equipment |
| CN107885108B (en) * | 2017-12-18 | 2024-03-19 | 深圳科立讯通信有限公司 | Control device for electronic equipment |
| CN109061265A (en) * | 2018-08-31 | 2018-12-21 | 无锡华润矽科微电子有限公司 | Unused time controllable multimeter control circuit |
| CN109061265B (en) * | 2018-08-31 | 2024-03-26 | 华润微集成电路(无锡)有限公司 | Universal meter control circuit with controllable shutdown time |
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| TR01 | Transfer of patent right |
Effective date of registration: 20210721 Address after: Room 821, No. 333, jiufo Jianshe Road, Zhongxin Guangzhou Knowledge City, Huangpu District, Guangzhou, Guangdong 510000 Patentee after: Skyworth Group Intelligent Technology Co., Ltd Address before: No.99, Kaida Road, Guangzhou Economic and technological development science and Technology City, Guangzhou, Guangdong 510000 Patentee before: GUANGZHOU SKYWORTH FLAT DISPLAY TECHNOLOGY Co.,Ltd. |