CN100592357C - Process for startup and closing backlight lamp of liquid crystal screen and control system thereof - Google Patents
Process for startup and closing backlight lamp of liquid crystal screen and control system thereof Download PDFInfo
- Publication number
- CN100592357C CN100592357C CN200710097520A CN200710097520A CN100592357C CN 100592357 C CN100592357 C CN 100592357C CN 200710097520 A CN200710097520 A CN 200710097520A CN 200710097520 A CN200710097520 A CN 200710097520A CN 100592357 C CN100592357 C CN 100592357C
- Authority
- CN
- China
- Prior art keywords
- liquid crystal
- voltage
- crystal screen
- backlight lamp
- screen backlight
- 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.)
- Active
Links
Images
Abstract
The invention provides a liquid crystal screen backlight lamp starting method comprising: receiving a start-up command; lifting a voltage used for driving the liquid crystal screen backlight lamp according to a voltage control parameter. Also provided is a liquid crystal screen backlight lamp turning-off method comprising: receiving a standby or turning-off command; reducing the voltage used for driving the liquid crystal screen backlight lamp according to the voltage control parameter. Further provided is a liquid crystal screen backlight lamp control system including: a storage unit, a control unit, and a liquid crystal screen backlight driving unit. With the invention, instantaneous lighting or extinguishing of the liquid crystal screen can be avoided, thereby avoiding instantaneous impact of an intensive current during starting-up and turning-off, prolonging the life time of the backlight lamp, and providing proper time for viewers, protecting eyesight of the viewers.
Description
Technical field
The present invention relates to the liquid crystal tv technology field, relate in particular to a kind of process for startup and closing backlight lamp of liquid crystal screen and control system thereof.
Background technology
At present, for LCD TV, when opening LCD TV, television system can be switched to the power supply of liquid crystal screen backlight lamp at once, makes that LCD screen is instantaneous to be lighted, and the sudden change of brightness can cause glare phenomenon to beholder's eyes.And when closing LCD TV, then television system can moment disconnects the power supply of liquid crystal screen backlight lamp, and liquid crystal display moment extinguishes, this luminance transients, to beholder's eyes also can be same impact and stimulate.From another point of view, the moment that liquid crystal screen backlight lamp starts and closes, because the sudden change of power supply, liquid crystal screen backlight lamp can be subjected to the moment impact of electric current, has also shortened the life-span of liquid crystal screen backlight lamp.
The patented claim of application number 2005100211866.1 provides TV set LCD time sequence controlling method during standby, the patented claim of application number 2005100211865.7 provides TV set LCD time sequence controlling method during open, but these two patented claims also do not propose how to solve the instantaneous problem of lighting or extinguishing of LCD screen when turning on TV or closing television.
Summary of the invention
In view of this, fundamental purpose of the present invention is to provide a kind of liquid crystal screen backlight lamp startup, method for closing and control system thereof, instantaneously lights or extinguishes with what avoid LCD screen.
Technical scheme provided by the invention is a kind of liquid crystal screen backlight lamp starting method, comprising:
Receive start-up command;
After receiving start-up command, energized is powered to liquid crystal screen backlight lamp, and the voltage that offers liquid crystal screen backlight lamp or electric current is controlled it is raise gradually.
Wherein, further comprise: after receiving start-up command, postpone behind the setting-up time again energized and power to liquid crystal screen backlight lamp.
Wherein, further comprise: after receiving start-up command, described power source voltage is checked that whether stable with the trigger voltage of judging start, after judgement was stable, energized was powered to liquid crystal screen backlight lamp again.
Wherein, the voltage that offers liquid crystal screen backlight lamp or the control of electric current are carried out according to the Control of Voltage parameter, described Control of Voltage parameter comprises: the function of express time and voltage relationship.
Wherein, the function of representing described time and voltage relationship comprises one of following: the curve continuous function of direct ratio continuous function, time and the voltage of the discrete time and two Dimension Numerical, time and the voltage of voltage.
Wherein, set the setting value of ceiling voltage, when the voltage that offers liquid crystal screen backlight lamp or electric current arrive described setting value, stop to make it maintain described setting value the voltage that offers liquid crystal screen backlight lamp or the control of electric current.
Wherein, the setting value of described ceiling voltage comprises one of following: the magnitude of voltage of liquid crystal screen backlight lamp when the magnitude of voltage of acquiescence, last shutdown, the pairing magnitude of voltage of liquid crystal display background light brightness that the user sets.
The present invention also provides a kind of liquid crystal screen backlight lamp method for closing, comprising:
Receive standby or shutdown command;
After receiving standby or shutdown command, the voltage that offered liquid crystal screen backlight lamp by power supply or electric current controlled it is reduced gradually.
Wherein, further comprise: set the setting value of minimum voltage, when the voltage that offers liquid crystal screen backlight lamp or electric current are reduced to described setting value, close described power supply, stop power supply liquid crystal screen backlight lamp.
Wherein, the voltage that offered liquid crystal screen backlight lamp by power supply or the control of electric current are carried out according to the Control of Voltage parameter, described Control of Voltage parameter comprises: the function of express time and voltage relationship.
Wherein, the setting value of described minimum voltage comprises one of following: the minimum voltage value of acquiescence, zero voltage value.
The present invention also provides a kind of liquid crystal screen backlight lamp control system, comprising: storage unit stores the Control of Voltage parameter that is used to control liquid crystal screen backlight lamp; The liquid crystal display backlight driving unit, parameter adjustment offers the voltage of liquid crystal screen backlight lamp according to Control of Voltage; Control module, Control of Voltage parameter in the reading cells, and send the instruction that comprises the Control of Voltage parameter to described liquid crystal display backlight driving unit, by the liquid crystal display backlight driving unit voltage that offers liquid crystal screen backlight lamp is adjusted by the Control of Voltage parameter.
Wherein, further comprise: the power switch unit, be used to receive the control signal of described control module, liquid crystal screen backlight lamp is carried out power supply or have a power failure by the control of control signal.
As seen from the above, liquid crystal screen backlight lamp starting method provided by the invention, be when liquid crystal screen backlight lamp is powered, the voltage offer the liquid crystal display background light or electric current gradually raise, so when starting liquid crystal screen backlight lamp, can realize the startup of fading in, promptly raising gradually offers the voltage of liquid crystal display background light, thereby makes background light brightness be increased to normal brightness gradually.Because this moment, power supply can not suddenly change, backlight avoids being subjected to the moment impact of strong electric current when starting, and has prolonged the life-span of backlight.And, give the corresponding adaptation time of beholder, protected beholder's eyesight.
Liquid crystal screen backlight lamp method for closing provided by the invention is when closing liquid crystal screen backlight lamp, to the shutoff of fading out of LCD TV backlight lamp, promptly reduces offering the voltage or the electric current of liquid crystal display background light gradually, thereby makes background light brightness be reduced to minimum gradually.Because this moment, power supply can not suddenly change, backlight avoids being subjected to the moment impact of strong electric current when closing, prolonged the life-span of backlight.And, give the corresponding adaptation time of beholder, protected beholder's eyesight.And the present invention can adopt the various control functions control to start and close closed procedure.
In addition, the present invention can be behind a setting-up time, perhaps after the trigger voltage of judging start is stable, just begin to avoid of the impact of trigger voltage instability, and guarantee that the start-up course liquid crystal display is the blank screen state to liquid crystal screen backlight lamp for the power supply of liquid crystal screen backlight lamp unit.
Description of drawings
Fig. 1 is the liquid crystal screen backlight lamp control system schematic diagram;
Fig. 2 is that liquid crystal screen backlight lamp starts process flow diagram;
Fig. 3 is liquid crystal screen backlight lamp closing flow path figure;
Fig. 4 is the synoptic diagram of liquid crystal screen backlight lamp control system embodiment.
Specific implementation method
The present invention is described in detail below in conjunction with accompanying drawing.
Show liquid crystal screen backlight lamp control system 10 of the present invention as Fig. 1, comprising: storage unit 1, control module 2, liquid crystal display backlight driving unit 3 can also comprise a power switch unit 4.Wherein:
Control module 2 is realized control function, comprises and read the Control of Voltage parameter from storage unit 1, and send the function that comprises the Control of Voltage parameter instruction to liquid crystal display backlight driving unit 3, also comprises power switch unit 4 is disconnected or closed control function.
Liquid crystal display backlight driving unit 3, be used to liquid crystal screen backlight lamp 5 that voltage is provided,, also receive the Control of Voltage parameter that control module 2 sends over to drive lighting and extinguishing of liquid crystal screen backlight lamp, according to described Control of Voltage parameter, adjust the voltage that offers liquid crystal screen backlight lamp 5.
Liquid crystal screen backlight lamp control system 10 is for example applicable to television system.
Accordingly, the invention provides the startup of liquid crystal screen backlight lamp 5 and the method for closing,, be elaborated below in conjunction with accompanying drawing 2 and 3.Show the startup method of liquid crystal screen backlight lamp as Fig. 2, may further comprise the steps:
Step 201: start-up command is transfused to control module 2.
Step 202: whether the voltage of 2 pairs of primary powers of control module is judged, stable to judge trigger voltage.Enter step 203 after trigger voltage is stable.
Step 203: control module 2 sends an instruction to power switch unit 4, controls the power supply that it is switched to liquid crystal display backlight driving unit 3`.
Wherein, judge whether trigger voltage is stable, can realize by the fluctuation of judging the main power voltage of importing, after input voltage fluctuation is steady, represent that then trigger voltage is stable.
The purpose that step 202 is set be for fear of in start-up course because of the impact of principal voltage shakiness backlight to liquid crystal screen backlight lamp 5, simultaneously, the liquid crystal display screen kept not working always during the system that can also be implemented in powered on.
Certainly, for the step 202 shown in the figure, can not judge also whether trigger voltage is stable, and replace this step, thereby control the power supply that is switched to liquid crystal display backlight driving unit 3 again after being implemented in setting-up time by time-delay one setting-up time.This time should guarantee that after this time, trigger voltage has been in steady state (SS), and this time value can obtain by test, and by the factory mode of TV or in control program, preestablish in the television system.
Step 204: control module 2 reads out the Control of Voltage parameter of the control liquid crystal screen backlight lamp startup of being deposited from storage unit 1.
Step 205: the instruction that control module 2 will comprise the Control of Voltage parameter sends to liquid crystal display backlight driving unit 3.Wherein, the Control of Voltage parameter that starts of this control backlight should show as voltage according to time parameter from the low relation that is elevated to a setting value gradually.
Wherein, this Control of Voltage parameter can be the time of dispersing and the two Dimension Numerical of voltage relationship, for example is a relation table that discrete time is corresponding with voltage; Also can be a continuous function, as direct ratio function or curvilinear function etc.
When the Control of Voltage parameter is a continuous function, can calculate according to each time cycle by control module 2 and generate the discrete time and the two Dimension Numerical of voltage, and the two Dimension Numerical that will disperse offers the liquid crystal display backlight driving unit as the Control of Voltage parameter.
Step 206: liquid crystal display backlight driving unit 3 is according to described Control of Voltage parameter, and the voltage that control offers liquid crystal screen backlight lamp 5 raises gradually from low.
Step 207: liquid crystal display backlight driving unit 3 judges whether described voltage is adjusted to the setting value of a ceiling voltage of setting when raising the voltage of supply liquid crystal screen backlight lamp 5, thereby realizes that brightness of backlight is increased to the setting value of setting before gradually.The setting value of this ceiling voltage can be a magnitude of voltage after the startup of giving tacit consent to, the magnitude of voltage of backlight or the pairing magnitude of voltage of background light brightness that the user sets etc. when the last time shuts down.
When brightness of backlight was increased to the value of setting, to the startup end of liquid crystal screen backlight lamp 5, the voltage of supplying with liquid crystal screen backlight lamp 5 was maintained on the setting value.
In step 206, the function that comprises when the Control of Voltage parameter is during for the function of discrete time and voltage relationship, and 3 of liquid crystal display backlight driving units offer liquid crystal screen backlight lamp voltage in corresponding time adjustment and get final product.
When the function that comprises when the Control of Voltage parameter is continuous function, then can adjust the voltage that offers liquid crystal screen backlight lamp in real time.
When the function that comprises when the Control of Voltage parameter is continuous function, also can calculate the voltage of this time correspondence, and adjust the voltage that offers liquid crystal screen backlight lamp 5 in the corresponding time in view of the above in each time cycle.For example, when comprising update cycle, voltage renewal function parameter in the Control of Voltage parameter that liquid crystal display backlight driving unit 3 receives, liquid crystal display backlight driving unit 3 calculates the cycle of renewal, and the voltage of each cycle correspondence, and to adjust liquid crystal screen backlight lamp 5 voltages in described each be corresponding voltage value in cycle.
For the step 206 of foregoing description, description be after control module 2 sends the primary voltage controlled variable, by the execution voltage adjustment operation of liquid crystal display backlight driving unit 3 according to the described parameter cycle.Be understood that, also can be control module 2 according to the cycle in the Control of Voltage parameter, regular send corresponding voltage value to liquid crystal display backlight driving unit 3, liquid crystal display backlight driving unit 3 offers the voltage of liquid crystal screen backlight lamp 5 according to described magnitude of voltage adjustment.
From this embodiment as can be seen; when liquid crystal screen backlight lamp control system 10 is used for television system; in starting the TV process; the brightness of LCD TV backlight lamp can be strengthened gradually to the brightness of setting; rather than moment lights; to the moment impact of the voltage of liquid crystal screen backlight lamp, and give beholder corresponding adaptation time, protection beholder eyesight when having reduced to start.
Show the method for closing of liquid crystal screen backlight lamp as Fig. 3, may further comprise the steps:
Step 301: standby or shutdown command are transfused to control module 2;
Step 302: control module 2 reads out the Control of Voltage parameter that the control backlight deposited is closed from storage unit 1.
Step 303: control module 2 sends to liquid crystal display backlight driving unit 3 with the Control of Voltage parameter that reads.Wherein, the Control of Voltage parameter of this control backlight startup should show as voltage is reduced to a setting value gradually from height according to time parameter relation.
In like manner, this Control of Voltage parameter can be the time of dispersing and the two Dimension Numerical of voltage relationship, also can be a continuous function, as direct ratio function or curvilinear function etc., specifically sees referring to top description to step 204～205, repeats no more herein.
Step 304: liquid crystal display backlight driving unit 3 offers the voltage of liquid crystal screen backlight lamp 5 according to described Control of Voltage parameter control.
Step 305: when liquid crystal display backlight driving unit 3 offers the voltage of liquid crystal screen backlight lamp 5 in control, judge whether described voltage is adjusted to the setting value of the minimum voltage of setting.
By step 304～305, the voltage that control offers liquid crystal screen backlight lamp 5 is reduced to a setting value gradually from height, realizes that brightness of backlight is reduced to setting value gradually.This setting value can be the minimum voltage value of keeping brightness of acquiescence or be zero.
In like manner, control function can specifically be seen referring to above-mentioned description to step 206～207 for the discrete time and the function or the continuous function of voltage relationship, repeated no more herein.
Step 306: control module 2 sends an instruction to power switch unit 4, controls the power supply that it is disconnected to the liquid crystal display backlight driving unit.
From the foregoing description as can be seen; when liquid crystal screen backlight lamp control system 10 is used for television system; in the closing television process; the brightness of LCD TV backlight lamp can be reduced to the brightness of setting gradually; rather than pop-off; to the moment impact of the voltage of liquid crystal screen backlight lamp, and give the corresponding adaptation time of beholder, protection beholder eyesight when having reduced to close.
Fig. 4 shows a concrete circuit diagram of realizing liquid crystal screen backlight lamp control system of the present invention.In this example, control module 2 is realized by 8541 chips, liquid crystal display backlight driving unit 3 is realized by the CCFL controller, for example can be chips such as DS3984/DS3988, power switch unit 4 is realized by triode T and relay J, wherein the part of label A indication is represented the coiler part of relay J among Fig. 4, and the part of label B indication is represented the contact part of relay J, below its principle is described.
The primary power that constitutes the CCFL controller of TV liquid crystal display backlight driving unit 3 is isolated by the contact part of disconnecting relay J.When TV was in standby, stake resistance R made triode T be in cut-off state, thereby made the relay J coil be in off-position, and the contact that makes disconnecting relay J is for disconnecting.
During startup, the coil of disconnecting relay J is controlled by triode T by control module 8451 chips.When control backlight signal is not ready for, disconnecting relay J contact is in off-state, the impact to liquid crystal screen backlight lamp 5 of avoiding in start-up course voltage (principal voltage backlight) instability because of primary power to cause guarantees that simultaneously screen keeps not working always during powering on.
After the voltage of primary power was stable, 8451 chips placed power-up state with disconnecting relay J coil, and the closing of contact of disconnecting relay J is connected primary power backlight to the CCFL controller.
Then, 8451 chips will offer the CCFL controller from the Control of Voltage parameter that storage unit 1 reads, so that the CCLF controller is by the step-length of setting in the Control of Voltage parameter liquid crystal screen backlight lamp voltage that raises gradually, the controlling value of voltage backlight or the controlling value of system default when reaching the last shutdown of user, thus the realization brightness of backlight is strengthened gradually to predetermined brightness.
When standby or shutdown, gradually reduce liquid crystal screen backlight lamp voltage according to the Control of Voltage parameter control CCFL controller that reads from storage unit 1 by the step-length of setting with reason 8451 chips, until the minimum value that reaches backlight illumination control signal electrical voltage system acquiescence, thereby realize that brightness of backlight reduces gradually.Afterwards, 8451 chip controls disconnecting relay J coil blackouts, disconnecting relay J contact J2 disconnects, and cuts off the power supply of primary power to the CCFL controller.
When the CCFL controller received control signal by iic bus, then 8451 chips can send the instruction that comprises the Control of Voltage parameter by iic bus, required this moment the CCFL controller to accept steering order by iic bus and adjusted liquid crystal screen backlight lamp 5 voltages.
Therefore process for startup and closing backlight lamp of liquid crystal screen provided by the invention for example when starting TV, can raise gradually and offer the voltage of liquid crystal display background light 5, thereby make background light brightness be increased to normal brightness gradually.When closing television, can reduce the voltage that offers liquid crystal display background light 5 gradually, thereby make background light brightness be reduced to minimum gradually.Like this, the power supply of liquid crystal screen backlight lamp 5 can not closed and undergos mutation owing to startup, has avoided having prolonged the life-span of backlight at the moment impact that starts, is subjected to when closing strong electric current.And, give the corresponding adaptation time of beholder, protected beholder's eyesight.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.For example among the present invention, the regulation and control of brightness are realized by regulation and control voltage, but also can realize by regulate electrical current.
Claims (8)
1. a liquid crystal screen backlight lamp starting method is characterized in that, comprising:
Receive start-up command;
After receiving start-up command, energized is powered to liquid crystal screen backlight lamp, and according to the function of express time and voltage relationship the voltage that offers liquid crystal screen backlight lamp or electric current is controlled it is raise gradually;
When the voltage that offers liquid crystal screen backlight lamp or electric current arrive setting value, stop to make it maintain described setting value to the voltage that offers liquid crystal screen backlight lamp or the control of electric current.
2. liquid crystal screen backlight lamp starting method according to claim 1 is characterized in that, further comprises:
After receiving start-up command, postpone behind the setting-up time again energized and power to liquid crystal screen backlight lamp.
3. liquid crystal screen backlight lamp starting method according to claim 1 is characterized in that, further comprises:
After receiving start-up command, judge whether the trigger voltage of start is stable, after judgement was stable, energized was powered to liquid crystal screen backlight lamp again.
4. liquid crystal screen backlight lamp starting method according to claim 1 is characterized in that, it is one of following that the function of representing described time and voltage relationship comprises:
The curve continuous function of direct ratio continuous function, time and the voltage of the discrete time and two Dimension Numerical, time and the voltage of voltage.
5. liquid crystal screen backlight lamp starting method according to claim 1 is characterized in that, it is one of following that described setting value comprises:
The pairing magnitude of voltage of liquid crystal display background light brightness of the magnitude of voltage of liquid crystal screen backlight lamp, user's setting when the magnitude of voltage of acquiescence, last shutdown.
6. a liquid crystal screen backlight lamp method for closing is characterized in that, comprising:
Receive standby or shutdown command;
After receiving standby or shutdown command, according to the function of express time and voltage relationship the voltage that offered liquid crystal screen backlight lamp by power supply or electric current are controlled it is reduced gradually;
When the voltage that offers liquid crystal screen backlight lamp or electric current are reduced to setting value, close described power supply, stop power supply to liquid crystal screen backlight lamp.
7. liquid crystal screen backlight lamp method for closing according to claim 6 is characterized in that, it is one of following that described setting value comprises:
Minimum voltage value, the zero voltage value of acquiescence.
8. liquid crystal screen backlight lamp control system comprises:
Storage unit is used to store the express time of control liquid crystal screen backlight lamp and the function of voltage relationship;
The liquid crystal display backlight driving unit is used for offering according to the function adjustment of express time and voltage relationship the voltage of liquid crystal screen backlight lamp;
Control module, be used for the express time of reading cells and the function of voltage relationship, and send the instruction of the function that comprises express time and voltage relationship to described liquid crystal display backlight driving unit, by the liquid crystal display backlight driving unit voltage that offers liquid crystal screen backlight lamp is adjusted by the function of express time and voltage relationship;
The power switch unit is used to receive the control signal of described control module, liquid crystal screen backlight lamp is carried out power supply or has a power failure by the control of control signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710097520A CN100592357C (en) | 2007-04-26 | 2007-04-26 | Process for startup and closing backlight lamp of liquid crystal screen and control system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710097520A CN100592357C (en) | 2007-04-26 | 2007-04-26 | Process for startup and closing backlight lamp of liquid crystal screen and control system thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101038715A CN101038715A (en) | 2007-09-19 |
| CN100592357C true CN100592357C (en) | 2010-02-24 |
Family
ID=38889592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710097520A Active CN100592357C (en) | 2007-04-26 | 2007-04-26 | Process for startup and closing backlight lamp of liquid crystal screen and control system thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100592357C (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101437868B1 (en) * | 2007-11-14 | 2014-09-05 | 삼성디스플레이 주식회사 | Display device |
| CN102298911A (en) * | 2010-06-28 | 2011-12-28 | 瀚宇彩晶股份有限公司 | Methods for improving stability and contrast of display device |
| CN103531166A (en) * | 2010-06-28 | 2014-01-22 | 瀚宇彩晶股份有限公司 | Method for improving image contrast of display device |
| CN102682718B (en) * | 2012-05-11 | 2015-01-21 | 深圳市华星光电技术有限公司 | Backlight module of liquid crystal display screen and control method thereof |
| CN104391421B (en) * | 2014-06-11 | 2017-03-22 | 北京大申烽华科技有限责任公司 | A method for recording super-high-definition digital images to a microfilm |
| TWI721375B (en) * | 2019-02-22 | 2021-03-11 | 友達光電股份有限公司 | Timing controller, display device and screen displaying method |
| CN111028790B (en) * | 2019-12-09 | 2021-04-23 | 昆山龙腾光电股份有限公司 | Backlight adjusting circuit, adjusting method and liquid crystal display device |
| CN111243532B (en) * | 2020-01-16 | 2022-03-22 | 聚好看科技股份有限公司 | Backlight control method and display device |
| CN113870800B (en) * | 2021-09-22 | 2022-12-02 | 东莞市金锐显数码科技有限公司 | Backlight adjusting method and device, terminal equipment and storage medium |
| CN113628594B (en) * | 2021-09-26 | 2022-12-02 | 合肥鑫晟光电科技有限公司 | Light-emitting substrate, driving method thereof and display device |
| CN114464148A (en) * | 2021-12-28 | 2022-05-10 | 深圳市鸿合创新信息技术有限责任公司 | Electronic equipment and method and device for controlling power-on/power-off time sequence thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6268844B1 (en) * | 1998-02-17 | 2001-07-31 | Lg Electronics, Inc. | Apparatus and method of displaying backlight consumption time for LCD monitor |
| CN2446625Y (en) * | 2000-06-12 | 2001-09-05 | 大连光洋科技工程有限公司 | Liquid crystal display backlight lamp power source auto controller |
| CN1393728A (en) * | 2001-06-22 | 2003-01-29 | 神达电脑股份有限公司 | Correcting method of optical sensor for automatic brightness control of LCD |
| CN1722058A (en) * | 2004-07-16 | 2006-01-18 | 佛山市顺德区顺达电脑厂有限公司 | Method for turning off display backlight function automatically according to user's habit |
| CN1794044A (en) * | 2005-12-28 | 2006-06-28 | 南京Lg同创彩色显示系统有限责任公司 | Liquid crystal display capable of automatic regulating brightness and its regulating method |
| CN1869618A (en) * | 2005-05-25 | 2006-11-29 | 上海雷硕医疗器械有限公司 | Electronic thermometer with LED |
-
2007
- 2007-04-26 CN CN200710097520A patent/CN100592357C/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6268844B1 (en) * | 1998-02-17 | 2001-07-31 | Lg Electronics, Inc. | Apparatus and method of displaying backlight consumption time for LCD monitor |
| CN2446625Y (en) * | 2000-06-12 | 2001-09-05 | 大连光洋科技工程有限公司 | Liquid crystal display backlight lamp power source auto controller |
| CN1393728A (en) * | 2001-06-22 | 2003-01-29 | 神达电脑股份有限公司 | Correcting method of optical sensor for automatic brightness control of LCD |
| CN1722058A (en) * | 2004-07-16 | 2006-01-18 | 佛山市顺德区顺达电脑厂有限公司 | Method for turning off display backlight function automatically according to user's habit |
| CN1869618A (en) * | 2005-05-25 | 2006-11-29 | 上海雷硕医疗器械有限公司 | Electronic thermometer with LED |
| CN1794044A (en) * | 2005-12-28 | 2006-06-28 | 南京Lg同创彩色显示系统有限责任公司 | Liquid crystal display capable of automatic regulating brightness and its regulating method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101038715A (en) | 2007-09-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100592357C (en) | Process for startup and closing backlight lamp of liquid crystal screen and control system thereof | |
| US6191568B1 (en) | Load power reduction control and supply system | |
| CN100583965C (en) | Brightness control method and control system for on and off of TV set | |
| CN108119994A (en) | The low power consumpting controling circuit and Low-power-consumptiocontrol control method of air conditioner | |
| CN102591108A (en) | Projector | |
| US20140176021A1 (en) | Method and Apparatus for Controlling Light Intensity of Lamp | |
| CN101444147A (en) | Method of shutting down a high pressure discharge lamp and driving unit for driving a high pressure discharge lamp | |
| JP2008536459A (en) | Royer oscillator with emission electronics | |
| CN101183517A (en) | Method, device and terminal for regulating brightness of LCD on terminal equipment | |
| CN201066951Y (en) | LCD screen backlight lamp control system | |
| JP2006254304A (en) | Portable terminal device | |
| WO2021018140A1 (en) | Lamp and lamp control system | |
| CN102682718B (en) | Backlight module of liquid crystal display screen and control method thereof | |
| CN204618936U (en) | Depurator | |
| CN102447855A (en) | Liquid crystal display television brightness adjustment system and method | |
| CN208075251U (en) | The low power consumpting controling circuit of air conditioner | |
| CN101196647A (en) | Back light module unit and its control method | |
| KR101601609B1 (en) | Apparatus and method for controlling smart dimming of led street light | |
| US8922132B2 (en) | Load system having a control element powered by a control signal | |
| KR200215132Y1 (en) | Inverter for high bright backlight | |
| KR100773869B1 (en) | Power saving plus receptacle capable of emergent power supply | |
| KR102366551B1 (en) | Closed transsition transfer switch | |
| CN100581313C (en) | Cold-cathode lamp tube circuit driving process and apparatus and related electronic device | |
| US20110121728A1 (en) | Apparatus and method for controlling light intensity of lamp | |
| GB2582243A (en) | Discharge lamp lighting control device and lamp current supply method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151215 Address after: 266101, Haier Road, 1 hi tech park, Shandong, Qingdao (Haier Industrial Park) Patentee after: haier group corporation Patentee after: Qingdao Haier Electric Appliance Co., Ltd. Patentee after: QINGDAO HAIER MULTI-MEDIA CO., LTD. Address before: 266101, Haier Road, 1 hi tech park, Shandong, Qingdao (Haier Industrial Park) Patentee before: haier group corporation Patentee before: Qingdao Haier Electric Appliance Co., Ltd. |