CN102568428A - Awakening method for liquid crystal display screen and electronic equipment with liquid crystal display screen - Google Patents
Awakening method for liquid crystal display screen and electronic equipment with liquid crystal display screen Download PDFInfo
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- CN102568428A CN102568428A CN2012100503336A CN201210050333A CN102568428A CN 102568428 A CN102568428 A CN 102568428A CN 2012100503336 A CN2012100503336 A CN 2012100503336A CN 201210050333 A CN201210050333 A CN 201210050333A CN 102568428 A CN102568428 A CN 102568428A
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Abstract
The invention provides an awakening method for a liquid crystal display screen and electronic equipment with the liquid crystal display screen. The equipment comprises a flag bit modifying unit and a backlight brightness regulating unit, wherein the flag bit modifying unit is used for modifying a flag bit for backlight brightness regulation into a first preset value when the LCD (Liquid Crystal display) awakening operation is completed; and the backlight brightness regulating unit is connected with the flag bit modifying unit and is used for executing the backlight brightness regulation operation to brighten a backlight lamp after the flag bit is determined into the first preset value. In the scheme, before the backlight lamp is brightened, whether the LCD awakening operation is completed is determined according to the flag bit for backlight brightness regulation, and only after the LCD awakening operation and the backlight awakening operation are completed, the brightness of the backlight lamp is improved, i.e. the lowest brightness of the backlight lamp is regulated to the brightness before dormancy, and thus, the problem of white screen is avoided.
Description
Technical field
The present invention relates to lcd technology, relate in particular to a kind of awakening method of LCDs and have the electronic equipment of LCDs.
Background technology
Existing electronics, product (for example mobile phone, notebook computer, multi-media LCD TV, numerically-controlled machine etc.) such as electric almost all have LCDs, can make things convenient for intuitively through LCDs electronics, electric product are operated.
For hand-held electronic product, for example mobile phone, panel computer etc. all adopt battery to supply power, and its LCDs is main power consumption parts; In order to make hand-held electronic product have flying power preferably; Then in the time need not watching the displaying contents of LCDs, can make LCDs carry out dormancy, promptly system controls the brightness of LCD screen backlight lamp through calling the backlight drive function; The brightness that makes the LCD screen backlight lamp from current brightness regulation to the darkest; To get into dormant state, at this moment, the power consumption of LCDs is minimum.When needs are watched the displaying contents of LCDs; Need wake up LCDs, at this moment, system call backlight drive function is controlled the brightness of LCD screen backlight lamp; The brightness that makes the LCD screen backlight lamp is by the brightness that the most secretly is adjusted to before the dormancy, to withdraw from dormant state.
But; Prior liquid crystal display exists the LCD of LCDs also not waken up when being waken up, just begins to carry out the situation that brightness of backlight is regulated; In this case; LCDs is white screen state, and after the LCD of LCDs was waken up, LCDs could show normal pictures.Above-mentioned LCDs occur white screen problems affect the display quality of LCDs, being prone to be mistaken as is the quality problems of product.
Summary of the invention
The present invention provides a kind of awakening method of LCDs and has the electronic equipment of LCDs, in order to solve white screen appears in LCDs when waking up problem.
The present invention provides a kind of awakening method of electronic equipment LCDs, comprising:
After the LCD wake operation was accomplished, the zone bit of revising the backlight illumination adjusting was first preset value;
After definite said zone bit is said first preset value, carries out backlight illumination adjusting operation and lighten backlight.
The awakening method of aforesaid electronic equipment LCDs wherein, before waking said system up, also comprises:
After the LCD sleep operation was accomplished, the said zone bit of revising said backlight illumination adjusting was second preset value.
The awakening method of aforesaid electronic equipment LCDs, wherein,
Said execution backlight illumination adjusting operation lightens backlight and is specially:
Pulse generator produces pulse signal, and drive current adjuster improves the amplitude of the drive current of said backlight according to said pulse signal, to heighten the brightness of said backlight.
The awakening method of aforesaid electronic equipment LCDs, wherein, said pulse signal is a square-wave signal.
The awakening method of aforesaid electronic equipment LCDs; Wherein, The brightness of said backlight comprises a plurality of gray scales; Each gray scale is an order of magnitude of corresponding said drive current respectively, and said pulse generator produces pulse signal, and drive current adjuster is specially according to the amplitude that said pulse signal improves the drive current of said backlight:
Said pulse generator produces a plurality of pulse signals successively, and said drive current adjuster improves the amplitude of said drive current successively step by step according to said a plurality of pulse signals, to improve the brightness of said backlight successively step by step.
The present invention also provides a kind of electronic equipment with LCDs, comprising:
Zone bit is revised the unit, is used for after said LCD wake operation is accomplished, and the zone bit of revising the backlight illumination adjusting is first preset value;
The backlight illumination regulon is revised the unit with said zone bit and is connected, and is used for after definite said zone bit is said first preset value, carries out backlight illumination adjusting operation and lightens backlight.
Aforesaid electronic equipment with LCDs, wherein,
Said backlight illumination regulon comprises pulse generator and drive current adjuster;
Said pulse generator is used to produce pulse signal;
Said drive current adjuster is connected with said pulse generator, is used for improving according to said pulse signal the amplitude of the drive current of said backlight, to heighten the brightness of said backlight.
Aforesaid electronic equipment with LCDs, wherein, said pulse signal is a square-wave signal.
Aforesaid electronic equipment with LCDs, wherein, said zone bit is revised the unit, also is used for after confirming that said LCD sleep operation is accomplished, and the said zone bit of revising said backlight illumination adjusting is second preset value.
The awakening method of LCDs provided by the invention and have the electronic equipment of LCDs; Before lightening backlight; Zone bit according to backlight illumination is regulated confirms whether the LCD wake operation is accomplished, and only after the LCD wake operation, just heightens the brightness of backlight; Be about to backlight by the brightness that the most secretly is adjusted to before the dormancy, therefore avoided occurring the problem of white screen.
Description of drawings
Fig. 1 is the process flow diagram of the awakening method embodiment one of LCDs of the present invention;
Fig. 2 is the process flow diagram of the awakening method embodiment two of LCDs of the present invention;
Fig. 3 has the structural representation of the electronic equipment embodiment one of LCDs for the present invention;
Fig. 4 has the structural representation of the electronic equipment embodiment two of LCDs for the present invention.
Embodiment
The embodiment of the invention provides a kind of awakening method of LCDs; This method is applicable to have LCD; And LCD has electronics, the electrical equipment of sleep mode, when the LCD of dormancy is waken up, confirms through the zone bit that backlight illumination is regulated whether the LCD wake operation is accomplished; Only after LCD wake operation and wake operation backlight completion, just heighten the brightness of backlight.
Fig. 1 is the process flow diagram of the awakening method embodiment of LCDs of the present invention; As shown in Figure 1, the embodiment of the awakening method of LCDs of the present invention comprises:
Step 100: after the LCD wake operation was accomplished, the zone bit of revising the backlight illumination adjusting was first preset value;
Electronic equipment with LCDs can be, but be not limited to mobile phone, panel computer, audio/video player, handheld game machine, multi-media LCD TV etc.
The electronic equipment with LCDs in the present embodiment is that example describes with the mobile phone, and the awakening method of the LCDs of the electronic equipment of other classification is identical with the awakening method of liquid crystal display screen of mobile phone or similar, does not give unnecessary details one by one here.
When cell phone system wakes up; Can carry out LCD wake operation and wake operation backlight in order; Carry out the LCD wake operation and wake operation backlight is meant; The LCD that calls in order of system wakes function and the function that wakes up backlight up, and LCD wakes function up and the function that wakes up backlight comes LCD and backlight are carried out wake operation through carrying out in system.The LCD here wakes up and promptly refers under the driving of driving voltage, LCD can normally show the image that will show, backlight waking up refers to that promptly backlight can be lighted.
Comprise the function that wakes up backlight in the backlight drive; Dormancy function backlight and backlight illumination adjustment function, static variable of definition in backlight drive, with it as the zone bit that could carry out backlight illumination adjusting; This zone bit can be preset two values; I.e. first preset value and second preset value, first preset value can be stated as " 1 ", and second preset value can be stated as " 0 ".For example, when the zone bit of backlight illumination adjusting is first preset value, can carry out backlight illumination and regulate, when being second preset value, can not carry out backlight illumination and regulate; And; In the dormancy function backlight of backlight drive, zone bit is revised as second preset value, when system wake-up, after the completion LCD wake operation; It is first preset value that the zone bit of again backlight illumination that wakes up in the function backlight of backlight drive being regulated remodifies, and promptly allows to carry out the brightness regulation of backlight this moment.And backlight waking up is claimed as first preset value in the function, in dormancy function backlight, be claimed as second preset value.
Step 200: after definite said zone bit is said first preset value, carries out backlight illumination adjusting operation and lighten backlight.
When the zone bit of confirming the backlight illumination adjusting was first preset value, promptly the zone bit of in the function backlight illumination being regulated that wakes up backlight of backlight drive was changed to " 1 " again.Accordingly; The zone bit that begins to locate backlight illumination is regulated at the backlight illumination adjustment function of backlight drive is judged; Judge and know that the zone bit that backlight illumination is regulated is " 1 ", then call the backlight illumination adjustment function, lighten backlight to carry out backlight illumination adjusting operation.Backlightly wake the brightness that is meant before brightness regulation to the LCD dormancy of backlight up.When lightening backlight, backlight chip can be controlled the brightness of backlight through dutycycle or pulse mode, adopts pulse mode to control and sees following introduction for details.The brightness before the dormancy can be adjusted to the adjusting of brightness, predefined other brightness can certainly be adjusted to.
The awakening method of the LCDs that the present invention program provides; Before lightening backlight; Zone bit according to backlight illumination is regulated confirms whether the LCD wake operation is accomplished, and only after the LCD wake operation is accomplished, just heightens the brightness of backlight; Be about to backlight by the brightness that the most secretly is adjusted to before the dormancy, therefore avoided occurring the problem of white screen.
Fig. 2 is for the process flow diagram of the awakening method embodiment two of LCDs of the present invention, and is as shown in Figure 2 based on the foregoing description further, before waking said system up, also comprises:
Step 101: after the LCD sleep operation was accomplished, the said zone bit of revising said backlight illumination adjusting was second preset value.
When system hibernates, carry out dormancy function backlight and LCD dormancy function in order, to carry out sleep operation backlight and LCD sleep operation.After the LCD sleep operation was accomplished, the said zone bit of revising said backlight illumination adjusting was second preset value.
Further,, carry out backlight illumination adjusting operation and can adopt pulse mode control, be specially based on the foregoing description:
Pulse generator produces pulse signal, and drive current adjuster improves the amplitude of the drive current of said backlight according to said pulse signal, to heighten the brightness of said backlight.
The brightness of backlight comprises a plurality of gray scales; Each gray scale is an order of magnitude of corresponding said drive current respectively, correspondingly, is gradual change to the adjusting of brightness of backlight; Promptly; Pulse generator produces a plurality of pulse signals successively, and said drive current adjuster improves the amplitude of said drive current successively step by step according to said a plurality of pulse signals, to improve the brightness of said backlight successively step by step.For example, the brightness of backlight is divided into the 0-32 level, regulates the method for one-level through pulse signal of every transmission and control brightness of backlight step by step.Wherein, The function that wakes up backlight is through calling the backlight illumination adjustment function; Send pulse signal through control GPIO (General Purpose Input Output, bus extender) to backlight chip with the backlight illumination adjustment function and control the brightness that backlight chip is regulated backlight.
Above-mentioned pulse signal can be square-wave signal, and when the rising edge of each square-wave signal arrived, backlight improved other brightness of level.
One of ordinary skill in the art will appreciate that: all or part of step that realizes above-mentioned each method embodiment can be accomplished through the relevant hardware of programmed instruction.Aforesaid program can be stored in the computer read/write memory medium.This program the step that comprises above-mentioned each method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
Fig. 3 has the structural representation of the electronic equipment embodiment of LCDs for the present invention, and as shown in Figure 3, the present invention has the embodiment of the electronic equipment of LCDs, comprising: zone bit is revised unit 1 and backlight illumination regulon 2.
Particularly, zone bit is revised unit 1, is used for after said LCD wake operation is accomplished, and the zone bit of revising the backlight illumination adjusting is first preset value; Backlight illumination regulon 2 is revised the unit with said zone bit and is connected, and is used for after definite said zone bit is said first preset value, carries out backlight illumination adjusting operation and lightens backlight.
The liquid crystal wake up process flow process of the electronic equipment with LCDs provided by the invention and effect repeat no more referring to said method embodiment here.
Further, as shown in Figure 4 based on the foregoing description, the present invention has the embodiment two of the electronic equipment of LCDs, and said backlight illumination regulon 2 comprises pulse generator 3 and drive current adjuster 4.
Particularly, pulse generator 3 is used to produce pulse signal; Said drive current adjuster 4 is connected with said pulse generator 3, is used for improving according to said pulse signal the amplitude of the drive current of said backlight, to heighten the brightness of said backlight.
Above-mentioned pulse signal can be square-wave signal.
Further, based on the foregoing description, said zone bit is revised unit 2, also is used for after said LCD sleep operation is accomplished, and the said zone bit of revising said backlight illumination adjusting is second preset value.
What should explain at last is: above each embodiment is only in order to explaining technical scheme of the present invention, but not to its restriction; Although the present invention has been carried out detailed explanation with reference to aforementioned each embodiment; Those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, perhaps to wherein part or all technical characteristic are equal to replacement; And these are revised or replacement, do not make the scope of the essence disengaging various embodiments of the present invention technical scheme of relevant art scheme.
Claims (9)
1. the awakening method of an electronic equipment LCDs is characterized in that, comprising:
After the LCD wake operation was accomplished, the zone bit of revising the backlight illumination adjusting was first preset value;
After definite said zone bit is said first preset value, carries out backlight illumination adjusting operation and lighten backlight.
2. the awakening method of electronic equipment LCDs according to claim 1 is characterized in that, before waking said system up, also comprises:
After the LCD sleep operation was accomplished, the said zone bit of revising said backlight illumination adjusting was second preset value.
3. the awakening method of electronic equipment LCDs according to claim 1 and 2 is characterized in that,
Said execution backlight illumination adjusting operation lightens backlight and is specially:
Pulse generator produces pulse signal, and drive current adjuster improves the amplitude of the drive current of said backlight according to said pulse signal, to heighten the brightness of said backlight.
4. the awakening method of electronic equipment LCDs according to claim 3 is characterized in that, said pulse signal is a square-wave signal.
5. the awakening method of electronic equipment LCDs according to claim 3; It is characterized in that; The brightness of said backlight comprises a plurality of gray scales; Each gray scale is an order of magnitude of corresponding said drive current respectively, and said pulse generator produces pulse signal, and drive current adjuster is specially according to the amplitude that said pulse signal improves the drive current of said backlight:
Said pulse generator produces a plurality of pulse signals successively, and said drive current adjuster improves the amplitude of said drive current successively step by step according to said a plurality of pulse signals, to improve the brightness of said backlight successively step by step.
6. the electronic equipment with LCDs is characterized in that, comprising:
Zone bit is revised the unit, is used for after said LCD wake operation is accomplished, and the zone bit of revising the backlight illumination adjusting is first preset value;
The backlight illumination regulon is revised the unit with said zone bit and is connected, and is used for after definite said zone bit is said first preset value, carries out backlight illumination adjusting operation and lightens backlight.
7. the electronic equipment with LCDs according to claim 6 is characterized in that,
Said backlight illumination regulon comprises pulse generator and drive current adjuster;
Said pulse generator is used to produce pulse signal;
Said drive current adjuster is connected with said pulse generator, is used for improving according to said pulse signal the amplitude of the drive current of said backlight, to heighten the brightness of said backlight.
8. the electronic equipment with LCDs according to claim 7 is characterized in that, said pulse signal is a square-wave signal.
9. according to the arbitrary described electronic equipment of claim 6-8, it is characterized in that said zone bit is revised the unit, also be used for after said LCD sleep operation is accomplished that the said zone bit of revising said backlight illumination adjusting is second preset value with LCDs.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012100503336A CN102568428A (en) | 2012-02-29 | 2012-02-29 | Awakening method for liquid crystal display screen and electronic equipment with liquid crystal display screen |
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| CN2012100503336A CN102568428A (en) | 2012-02-29 | 2012-02-29 | Awakening method for liquid crystal display screen and electronic equipment with liquid crystal display screen |
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| CN107545876A (en) * | 2017-08-11 | 2018-01-05 | 广州视源电子科技股份有限公司 | Adjust method, apparatus, electronic equipment and the storage medium of screen backlight brightness |
| CN107665685A (en) * | 2017-10-23 | 2018-02-06 | 深圳市中兴高达通信技术有限公司 | A kind of LCDs control method and device |
| WO2019056241A1 (en) * | 2017-09-21 | 2019-03-28 | 深圳传音通讯有限公司 | Wake-up method and wake-up apparatus for smart terminal, and smart terminal |
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| CN101650925A (en) * | 2009-09-11 | 2010-02-17 | 深圳顶海电子有限公司 | Control method of gradual brightness change of screen and notebook computer utilizing same |
| CN101908322A (en) * | 2009-06-05 | 2010-12-08 | 瑞轩科技股份有限公司 | Display method of liquid crystal display television |
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Patent Citations (3)
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| JP2008083590A (en) * | 2006-09-28 | 2008-04-10 | Sharp Corp | Transmissive display device |
| CN101908322A (en) * | 2009-06-05 | 2010-12-08 | 瑞轩科技股份有限公司 | Display method of liquid crystal display television |
| CN101650925A (en) * | 2009-09-11 | 2010-02-17 | 深圳顶海电子有限公司 | Control method of gradual brightness change of screen and notebook computer utilizing same |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107545876A (en) * | 2017-08-11 | 2018-01-05 | 广州视源电子科技股份有限公司 | Adjust method, apparatus, electronic equipment and the storage medium of screen backlight brightness |
| WO2019056241A1 (en) * | 2017-09-21 | 2019-03-28 | 深圳传音通讯有限公司 | Wake-up method and wake-up apparatus for smart terminal, and smart terminal |
| CN111149089A (en) * | 2017-09-21 | 2020-05-12 | 深圳传音通讯有限公司 | Awakening method and awakening device of intelligent terminal and intelligent terminal |
| CN111149089B (en) * | 2017-09-21 | 2023-11-03 | 深圳传音通讯有限公司 | Awakening method of intelligent terminal, intelligent terminal and computer readable storage medium |
| CN107665685A (en) * | 2017-10-23 | 2018-02-06 | 深圳市中兴高达通信技术有限公司 | A kind of LCDs control method and device |
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Application publication date: 20120711 |
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