CN203554579U - Power supply circuit and display device - Google Patents
Power supply circuit and display device Download PDFInfo
- Publication number
- CN203554579U CN203554579U CN201320726329.7U CN201320726329U CN203554579U CN 203554579 U CN203554579 U CN 203554579U CN 201320726329 U CN201320726329 U CN 201320726329U CN 203554579 U CN203554579 U CN 203554579U
- Authority
- CN
- China
- Prior art keywords
- voltage
- module
- power supply
- supply circuits
- power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000009466 transformation Effects 0.000 claims description 58
- 238000001914 filtration Methods 0.000 claims description 20
- 239000010409 thin film Substances 0.000 claims description 20
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000013461 design Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Abstract
The utility model provides a power supply circuit and a display device for reducing standby power consumption of power supply circuits and simplifying circuit structures to solve the problems that standby power consumption is large and power supply circuit structures are complex in the prior art. Meanwhile, production costs are reduced. The power supply circuit comprises a main power supply board and at least one auxiliary power supply board, which are parallelly connected. The main power supply board supplies a standby module with power, and the auxiliary power supply board supplies a functional module of a display device with power.
Description
Technical field
The utility model relates to Display Technique field, relates in particular to a kind of power supply circuits and display unit.
Background technology
Along with expanding economy, the thing followed is that people have more and more wide audio-visual space, therefore the consumer who much quality of the life is had pursuance, when choosing tv product, be no longer confined to the fundamental aspects such as image quality tonequality, " large scale " that match with " large space " also becomes the key factor that consumer considers.
Especially along with the development of intelligent television, TV is not just used for TV reception, people can carry out social activity, amusement, search information etc. with it, become the center of family life amusement, and large-sized TV is no matter be that all there is better display effect aspect watching video frequency program, play games etc., especially after 3D function becomes television standard configuration, outstanding in presenting of 3D effect, equal the excellent audio visual effect of 3D IMAX movie theatre to move home.This strand caters to the demand of consumer's pay attention to day by day personal space comfortableness, also promoted display screen and TV manufacturer to the extension of " greatly " direction.
Simultaneously, for liquid crystal television mainboard system and LCD backlight module provide the power circuit of electric energy, need to provide larger power output and electric current supporting with it, so this power circuit relative complex, the group number of the different operating voltage of output is also many than undersized, to guarantee that described large scale liquid crystal TV can present clear high-quality picture.
When carrying out power circuit design, be limited to the rule limits of components and parts, maximum voltage for example, the restriction of the factors such as maximum current, tend to design two or more power panels in power circuit, be the power supply of described large scale TV, to guarantee that described large scale TV can normally work simultaneously.In prior art, for controlling standby and the unlatching of power module, each power panel is all corresponding to a standby module, referring to Fig. 1; Because standby module is too much, make the power consumption of whole power circuit under ideal case often surpass GB restriction (0.5W), cause the product of producing not go on the market, cause serious economic loss; Meanwhile, because each power panel is all corresponding to a standby module, make the more complicated of described power circuit change, and then need larger space remove to place described power circuit, cause large scale TV thickening weight, do not meet lightening development trend.In addition, stand-by circuit increases, and also makes the production cost of described large scale TV increase.
Utility model content
The utility model embodiment provides a kind of power supply circuits and display unit, and stand-by power consumption, simplification circuit structure for reducing power supply circuits to solve the problem that in prior art, stand-by power consumption is large, power supply circuit construction is complicated, reduce production costs simultaneously.
The utility model embodiment provides a kind of power supply circuits, is used to display unit power supply, and described display unit comprises a standby module and a plurality of functional module, and described power supply circuits comprise a main power board and at least one the auxiliary power plate being connected in parallel; Described main power board is described standby module for power supply; The functional module power supply that described auxiliary power plate is described display unit.
In above-mentioned power supply circuits, due in this circuit, main power board is given standby module for power supply under holding state, and described auxiliary power plate is not powered under holding state, thereby ground has reduced the stand-by power consumption of whole circuit.Meanwhile, under holding state, described auxiliary power plate does not need power supply, therefore at this circuit, does not need the stand-by circuit of powering by auxiliary power plate is set, thereby has simplified the structure of described power supply circuits, has reduced the production cost of these power supply circuits.
Preferably, described power supply circuits also comprise:
A plurality of voltage changing modules, the supply voltage that described in each, transformation mould reception main power board or an auxiliary power plate provide, and have at least a voltage changing module to receive the supply voltage that an auxiliary power plate provides, and this supply voltage is converted into operating voltage, offer functional module.
Described voltage changing module is used for the supply voltage that carrys out autonomous/auxiliary power plate receiving to be converted into operating voltage, and offers the functional module of display unit, maintains functional module and normally works.
Preferably, described voltage changing module specifically comprises a boosting unit and at least one transformation output unit; Wherein:
Described boosting unit is connected with described power module, for the supply voltage receiving is boosted, and the supply voltage after boosting is offered to described transformation output unit;
Described transformation output unit receives operating voltage from master/auxiliary power plate, and by receive boost after voltage be converted into operating voltage, offer standby module/functional module, and a functional module is only accepted the operating voltage that a transformation output unit provides.
Described boosting unit is for boosting to the supply voltage receiving, and the supply voltage after boosting is offered to described transformation output unit, further, described voltage transformation unit by receive boost after supply voltage be converted into operating voltage, and offer external circuit, maintain the normal work of external circuit.
Preferably, described power supply circuits also comprise driving voltage changing module, described driving voltage changing module is connected between described main power board and described standby module and transformation output unit, for the supply voltage that main power board is provided, become driving voltage, and export to described standby module and transformation output unit.In addition, when the driving voltage of described stand-by circuit is different with the driving voltage of described transformation output unit, described power supply circuits can also comprise for provide first of the first driving voltage to drive voltage changing module to stand-by circuit, maintain described standby module and normally work; And for provide second of the second driving voltage to drive voltage changing module to each voltage changing module, maintain described voltage changing module and normally work.
Preferably, described power supply circuits also comprise:
Switch module, be connected at least one auxiliary power plate and the described voltage changing module that is connected with this auxiliary power plate between or be connected to main power board and the voltage changing module that is connected with this main power board between, for controlling described master/auxiliary power plate, to described voltage changing module, power.
Owing to being provided with switch module between described auxiliary power plate and described voltage changing module, by described switch module, can control the supply voltage that described auxiliary power plate provides to the voltage changing module being connected with this auxiliary power plate, thereby ground has reduced the stand-by power consumption of whole circuit; And, under ideal case, described switch module disconnects, described auxiliary power plate is no longer for the voltage changing module being connected with this auxiliary power plate provides supply voltage, owing to all there is no voltage on the each point being connected with described voltage changing module, therefore in described voltage changing module, also can not produce leakage current, thereby effectively prevent the generation of leakage current in voltage changing module, further reduce the stand-by power consumption of described power supply circuits;
Preferably, described switch module specifically comprises:
The first switching tube, be connected to auxiliary power plate and the boosting unit that is connected with this auxiliary power plate between, for controlling described auxiliary power plate, to the boosting unit being connected with this auxiliary power plate, provide supply voltage;
Second switch pipe, be connected to main power board and the boosting unit that is connected with this main power board between, for controlling described main power board, to the boosting unit being connected with this main power board, provide supply voltage;
The 3rd switching tube, be connected to described main power board and the transformation output unit that is connected with this main power board between, control described main power board and power to described output voltage transformation unit.
Preferably, described power supply circuits also comprise:
Switch control module, is connected with described switch module, for controlling described switch module in opening or closed condition.
Preferably, described power supply circuits also comprise a plurality of filtration modules that boost, the described filtration module that boosts is connected between boosting unit and transformation output unit, for the supply voltage after boosting is carried out to filtering, and the supply voltage after filtering is boosted is offered to transformation output unit, and then make the supply voltage after described transformation output unit can boost described filtering be converted into operating voltage, and offer functional module, maintain the normal work of functional module.
Preferably, described each transformation output unit comprises a voltage control subelement and the transformation output subelement being connected in series with this voltage control subelement; Wherein,
Described voltage control subelement is connected with described the 3rd switching tube, receives the driving voltage of self-driven voltage changing module, for controlling the work of the transformation output subelement being connected in series with this voltage control subelement;
Described transformation output subelement connects boosting unit and voltage control subelement, for the supply voltage after filtering is boosted receiving is converted into operating voltage.
Preferably, described switching tube is thin-film transistor or relay, for controlling described power module, to described voltage changing module, provides supply voltage; Or described switching tube can also part be thin-film transistor, another part is relay.In addition, described switching tube can also triode, the switch element such as switching diode, thyristor.
Preferably, when described switching tube is thin-film transistor, described thin-film transistor is N-type or P type thin-film transistor, is convenient to switch control module described thin-film transistor is controlled.
The utility model embodiment provides a kind of display unit, and described display unit comprises above-mentioned power supply circuits.
Accompanying drawing explanation
Fig. 1 is the structural representation of power supply circuits in prior art;
The schematic diagram of a kind of power supply circuits that Fig. 2 provides for the utility model embodiment mono-;
Fig. 3 is the structural representation of transformation output unit.
Embodiment
The utility model embodiment provides a kind of power supply circuits and display unit, and stand-by power consumption, simplification circuit structure for reducing power supply circuits to solve the problem that in prior art, stand-by power consumption is large, power supply circuit construction is complicated, reduce production costs simultaneously.
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
The utility model embodiment provides a kind of power supply circuits, is used to display unit power supply, and described display unit comprises a standby module and a plurality of functional module.Referring to Fig. 2, the structural representation of the power supply circuits that Fig. 2 provides for utility model embodiment.As can be seen from Figure 2, described power supply circuits comprise: power module 21, a plurality of voltage changing module 23, switch module 24 and switch control module 25;
Concrete:
Described power module 21, comprises a main power board 211 and at least one auxiliary power plate 212, and described main power board 211 and described auxiliary power plate 212 are connected in parallel; Described main power board 211 provides supply voltage for the voltage changing module 23 to being connected with this main power source 211, described voltage changing module 23 is converted into operating voltage by the supply voltage of reception, offer functional module, and described main power board 211 is also for the standby module for power supply to being connected with this main power source 211; Described auxiliary power plate 212 is for powering to the functional module of display unit by the voltage changing module 23 being connected with this auxiliary power plate 212.
Described in each, voltage changing module 23 is connected with main power board 211, or is connected with an auxiliary power plate 212, and has at least a voltage changing module 23 to be connected with an auxiliary power plate 212.
From Fig. 2, it can also be seen that, described each voltage changing module 23 comprises a boosting unit 231 and at least one transformation output unit 232;
Wherein, in each voltage changing module 23, described boosting unit 231 is connected with described power module 21, for the supply voltage receiving is boosted, and the supply voltage after boosting is offered to described transformation output unit 232;
Described transformation output unit 232 receives operating voltages from main power board 211, and by receive boost after voltage be converted into operating voltage, offer functional module.
In short, in each voltage changing module 23, boosting unit 231 is for the supply voltage receiving is boosted, and the supply voltage after boosting is offered to described transformation output unit 232; Further, described voltage transformation unit 232 by receive boost after supply voltage be converted into operating voltage, and offer functional module, maintain the normal work of functional module.
Further, described switch module 24 be also connected to main power board 211 and the voltage changing module 23 that is connected with this main power board 211 between, for controlling described main power board 211 to voltage changing module 23 power supplies that are connected with this main power board 211; Make when these power supply circuits are during in holding state, described switch module 24 disconnects, described main power board 211 no longer provides supply voltage to the voltage changing module 23 being connected with this main power board, owing to all there is no voltage on the each point being connected with described voltage changing module, therefore in described voltage changing module, also can not produce leakage current, thereby effectively prevented the generation of leakage current in voltage changing module, further reduced the stand-by power consumption of described power supply circuits.
In the power supply circuits that provide at the utility model embodiment, described switch module 24 comprises:
The first switching tube 241, be connected to auxiliary power plate 212 and the boosting unit 231 that is connected with this auxiliary power plate 212 between, for controlling described auxiliary power plate 212, to the boosting unit 231 being connected with this auxiliary power plate 212, provide supply voltage;
The 3rd switching tube 243, be connected to described main power board 211 and the transformation output unit 232 that is connected with this main power board 211 between, control described main power board 211 to described output voltage transformation unit 232 power supplies.
Further, above-mentioned switching tube is thin-film transistor or relay, for controlling described power module 21, by described voltage changing module 23, to functional module, powers; Or described switching tube can also part be thin-film transistor, another part is relay.In addition, described switching tube can also triode, the switch element such as switching diode, thyristor.
When described switching tube is thin-film transistor, described thin-film transistor is N-type or P type thin-film transistor, is convenient to 24 pairs of described thin-film transistors of switch control module and controls.
For example, described switching tube is N-type thin-film transistor, and all conductings when high level of described N-type thin-film transistor, end during low level;
When user shuts down by remote controller, remote controller sends standby command to described switch control module 25, described switch control module 25 produces low level signal according to the standby command receiving, and offers each thin-film transistor, makes described each thin-film transistor cut-off.Because supply voltage can not transfer in voltage changing module, so the impossible generation of the transformer in voltage changing module leakage current, thereby effectively prevented the generation of leakage current in voltage changing module, further reduced the stand-by power consumption of described power supply circuits.Meanwhile, in described switch control module 25, only need to export two kinds of signals, simplify the design of switch control module 25.
Further, when the driving voltage of described stand-by circuit is identical with the driving voltage of described transformation output unit 232, described power supply circuits also comprise driving voltage changing module 26, described driving voltage changing module 26 is connected between described main power board 211 and standby module and transformation output unit 232, for the supply voltage that main power board 211 is provided, become driving voltage, and export to described standby module and transformation output unit 232.Generally come institute, described driving voltage changing module 26 changes into supply voltage the driving voltage of 5v, is described standby module and 232 power supplies of transformation output unit.
In addition, when the driving voltage of described stand-by circuit is different with the driving voltage of described transformation output unit 232, described power supply circuits can also comprise for provide first of the first driving voltage to drive voltage changing module to stand-by circuit, maintain described standby module and normally work; And for provide second of the second driving voltage to drive voltage changing module to each voltage changing module, maintain described voltage changing module and normally work.
Further, described power supply circuits also comprise a plurality of filtration modules 27 that boost, the described filtration module 27 that boosts is connected to boosting unit 231 and receives between the transformation output unit 232 of the supply voltage after boosting that this boosting unit 231 provides, for the supply voltage after boosting is carried out to filtering, reduce the noise jamming in this circuit, and the supply voltage after filtering is boosted is offered to transformation output unit 232, and then make the supply voltage after described transformation output unit 232 can boost described filtering be converted into operating voltage, and be provided as functional module, maintain the normal work of functional module.
Further, referring to Fig. 3, described each transformation output unit 232 comprises a voltage control subelement 31 and the transformation output subelement 32 being connected in series with this voltage control subelement;
Described voltage control subelement 31 is connected with described the 3rd switching tube 243, receives the driving voltage of self-driven voltage changing module 26, for controlling the work of the transformation output subelement 32 being connected in series with this voltage control subelement 31;
Described transformation output subelement 32 connects boosting unit 231 and voltage control subelement 31, for the supply voltage after filtering is boosted receiving is converted into operating voltage, and offers the functional module that described transformation output subelement 32 connects.
Further, in described power supply circuits, also comprise output filtering module 28, described output filtering module 28 is for carrying out filtering to the operating voltage of transformation output subelement 32 outputs, and by offer the functional module of this display unit through filtered operating voltage, reduce the noise jamming in this circuit.
In above-mentioned power supply circuits, by be provided with switch module between described auxiliary power plate and described voltage changing module, for controlling the supply voltage that described auxiliary power plate provides to the voltage changing module being connected with this auxiliary power plate, and control described main power board and power to described transformation output unit, making does not need the stand-by circuit by described auxiliary power plate power supply is set again, thereby ground has reduced the stand-by power consumption of whole circuit; And, when described control module disconnects, in described voltage changing module, can not produce leakage current, further reduced the stand-by power consumption of described power supply circuits; Simultaneously owing to not needing that the stand-by circuit of powering by auxiliary power plate is set, thereby simplify the structure of described power supply circuits, reduced the production cost of these power supply circuits.
The utility model embodiment provides a kind of display unit, and described display unit comprises the power supply circuits that the utility model embodiment provides.
To sum up, the utility model embodiment provides a kind of power supply circuits and display unit; In described power supply circuits, owing to being provided with switch module between described auxiliary power plate and described voltage changing module, by described switch module, can control the supply voltage that described auxiliary power plate provides to the voltage changing module being connected with this auxiliary power plate, and control described main power board and power to described transformation output unit, therefore, in this circuit, do not need to arrange again described auxiliary power plate stand-by circuit, thereby ground has reduced the stand-by power consumption of whole circuit; And, under ideal case, described control module disconnects, owing to all there is no voltage on the each point being connected with described voltage changing module, therefore in this voltage changing module, can not produce leakage current, thereby effectively prevented the generation of leakage current in voltage changing module, further reduced the stand-by power consumption of described power supply circuits; Simultaneously owing to not needing that the stand-by circuit of powering by auxiliary power plate is set, thereby simplify the structure of described power supply circuits, reduced the production cost of these power supply circuits.
Obviously, those skilled in the art can carry out various changes and modification and not depart from spirit and scope of the present utility model the utility model.Like this, if within of the present utility model these are revised and modification belongs to the scope of the utility model claim and equivalent technologies thereof, the utility model is also intended to comprise these changes and modification interior.
Claims (12)
1. power supply circuits, are used to display unit power supply, and described display unit comprises a standby module and a plurality of functional module, it is characterized in that, described power supply circuits comprise a main power board and at least one the auxiliary power plate being connected in parallel; Described main power board is described standby module for power supply; The functional module power supply that described auxiliary power plate is described display unit.
2. power supply circuits as claimed in claim 1, is characterized in that, described power supply circuits also comprise:
A plurality of voltage changing modules, the supply voltage that described in each, transformation mould reception main power board or an auxiliary power plate provide, and have at least a voltage changing module to receive the supply voltage that an auxiliary power plate provides, and this supply voltage is converted into operating voltage, offer functional module.
3. power supply circuits as claimed in claim 2, is characterized in that, described voltage changing module specifically comprises a boosting unit and at least one transformation output unit; Wherein:
Described boosting unit is connected with described power module, for the supply voltage receiving is boosted, and the supply voltage after boosting is offered to described transformation output unit;
Described transformation output unit receives operating voltage from master/auxiliary power plate, and by receive boost after voltage be converted into operating voltage, offer standby module/functional module, and a functional module is only accepted the operating voltage that a transformation output unit provides.
4. power supply circuits as claimed in claim 3, it is characterized in that, described power supply circuits also comprise driving voltage changing module, described driving voltage changing module is connected between described main power board and described standby module and transformation output unit, for the supply voltage that main power board is provided, become driving voltage, and export to described standby module and transformation output unit.
5. power supply circuits as claimed in claim 4, is characterized in that, described power supply circuits also comprise:
Switch module, between the described voltage changing module that is connected at least one auxiliary power plate and is connected with this auxiliary power plate or be connected to main power board and the voltage changing module that is connected with this main power board between, for controlling described master/auxiliary power plate, by the voltage changing module being connected with this switch module, to functional module, provide supply voltage.
6. power supply circuits as claimed in claim 5, is characterized in that, described switch module specifically comprises:
The first switching tube, be connected to auxiliary power plate and the boosting unit that is connected with this auxiliary power plate between, for controlling described auxiliary power plate, to the boosting unit being connected with this auxiliary power plate, provide supply voltage;
Second switch pipe, be connected to main power board and the boosting unit that is connected with this main power board between, for controlling described main power board, to the boosting unit being connected with this main power board, provide supply voltage;
The 3rd switching tube, be connected to described main power board and the transformation output unit that is connected with this main power board between, control described main power board and power to described output voltage transformation unit.
7. power supply circuits as claimed in claim 6, is characterized in that, described power supply circuits also comprise:
Switch control module, is connected with described switch module, for controlling described switch module in opening or closed condition.
8. power supply circuits as claimed in claim 6, it is characterized in that, described power supply circuits also comprise a plurality of filtration modules that boost, the described filtration module that boosts is connected between boosting unit and transformation output unit, for the supply voltage after boosting is carried out to filtering, and the supply voltage after filtering is boosted is offered to transformation output unit.
9. power supply circuits as claimed in claim 6, is characterized in that, described each transformation output unit comprises a voltage control subelement and the transformation output subelement being connected in series with this voltage control subelement; Wherein,
Described voltage control subelement is connected with described the 3rd switching tube, receives the driving voltage of self-driven voltage changing module, for controlling the work of the transformation output subelement being connected in series with this voltage control subelement;
Described transformation output subelement connects boosting unit and voltage control subelement, for the supply voltage after filtering is boosted receiving is converted into operating voltage.
10. the power supply circuits as described in claim as arbitrary in claim 6-9, is characterized in that, described switching tube is thin-film transistor or relay.
11. power supply circuits as claimed in claim 10, is characterized in that, when described switching tube is thin-film transistor, described thin-film transistor is N-type or P type thin-film transistor.
12. 1 kinds of display unit, is characterized in that, described display unit comprises the power supply circuits described in the arbitrary claim of claim 1-11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320726329.7U CN203554579U (en) | 2013-11-15 | 2013-11-15 | Power supply circuit and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320726329.7U CN203554579U (en) | 2013-11-15 | 2013-11-15 | Power supply circuit and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203554579U true CN203554579U (en) | 2014-04-16 |
Family
ID=50472639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320726329.7U Expired - Lifetime CN203554579U (en) | 2013-11-15 | 2013-11-15 | Power supply circuit and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203554579U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103561221A (en) * | 2013-11-15 | 2014-02-05 | 京东方科技集团股份有限公司 | Power supply circuit and display device |
-
2013
- 2013-11-15 CN CN201320726329.7U patent/CN203554579U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103561221A (en) * | 2013-11-15 | 2014-02-05 | 京东方科技集团股份有限公司 | Power supply circuit and display device |
| US9640133B2 (en) | 2013-11-15 | 2017-05-02 | Boe Technology Group Co., Ltd. | Power supply circuit and a display device comprising the power supply circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103561221A (en) | Power supply circuit and display device | |
| CN107464533B (en) | A kind of constant-current drive circuit and television set | |
| CN103889118A (en) | OLED driving power device | |
| US20140042819A1 (en) | Electronic apparatus and power management method | |
| CN108470546A (en) | Current compensation circuit, VR equipment and control method | |
| CN109119021A (en) | A kind of OLED driving power and OLED TV | |
| CN203554579U (en) | Power supply circuit and display device | |
| CN203215919U (en) | Low-power-consumption standby circuit device and air conditioner | |
| CN101556772B (en) | Liquid crystal display drive circuit | |
| CN102855849A (en) | Liquid crystal backlight driving current control device | |
| CN203554280U (en) | Power supply circuit, power supply system and display device | |
| CN201957156U (en) | Low-power-consumption standby circuit and television | |
| US20090128215A1 (en) | Level shifter, interface driving circuit and image displaying system | |
| CN201813316U (en) | Power switching circuit | |
| CN209388158U (en) | A kind of development system for the aobvious control of rail traffic information | |
| CN203055211U (en) | Touch control type multimedia teaching all-in-one machine | |
| CN201413625Y (en) | Back light modulation circuit and TV set with the same | |
| CN202565389U (en) | Low-power-consumption digital television power supply unit | |
| CN202534293U (en) | Vehicle-mounted liquid crystal display | |
| CN202197358U (en) | Energy-saving standby circuit for television | |
| CN208295493U (en) | A kind of liquid-crystal touching-screen intelligent household terminal control equipment | |
| CN112737085B (en) | display device | |
| CN209218240U (en) | A kind of elevator HDMI high-definition multimedia display device | |
| CN106131466B (en) | Television and power panel circuit thereof | |
| CN203193507U (en) | Electric appliance standby power consumption-lowering power supply circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140416 |
|
| CX01 | Expiry of patent term |