CN105118460A - Charge releasing method and device of liquid crystal display screen - Google Patents
Charge releasing method and device of liquid crystal display screen Download PDFInfo
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- CN105118460A CN105118460A CN201510594197.0A CN201510594197A CN105118460A CN 105118460 A CN105118460 A CN 105118460A CN 201510594197 A CN201510594197 A CN 201510594197A CN 105118460 A CN105118460 A CN 105118460A
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- steering order
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Abstract
The invention discloses a charge releasing method and device of a liquid crystal display screen. The method comprises steps of: acquiring a turn-off control instruction for the liquid crystal display screen; sending a power grounding instruction to the driving chip of the liquid crystal display screen in order to connect the positive pole and the negative pole of the power of the driving chip; and sending the turn-off control instruction to the driving chip in order to control the driving chip to execute turn-off reset operation. The method overcomes a problem that charges cannot be completely released and static is not obviously eliminated in a conventional liquid crystal display screen static releasing method, does not influence the display effect when the liquid crystal display screen is turned on next time, and improves user experience.
Description
Technical field
The embodiment of the present invention relates to lcd technology, particularly relates to a kind of electric charge method for releasing and device of LCDs.
Background technology
Liquid crystal display (LiquidCrystalDisplay, LCD) problem of charge accumulation can in use be there is, because charge accumulation causes the rear LCD of long-time use can produce the problem of flicker, this situation causes the infringement to mobile phone brand to a great extent, causes and reprocesses.
LCD generally comprises LCDs and driving chip, LCDs by array base palte and the involutory setting of color membrane substrates, filling liquid crystal layer between two substrates.Driving chip applies electric field to two substrates, is controlled the windup-degree of liquid crystal layer, thus realize liquid crystal imaging by electric field intensity.In imaging process, may storage area electric charge in the structure of substrate, even if after power is turned off, these electric charges are also still remaining, namely define stored charge.
The mode of the LCD release electrostatic of present mobile phone is all substantially similar, mainly when the driving chip of LCDs powers on and resets, the positive-negative power of driving chip is disconnected, stops the substrate to LCDs to power, make the electric field of substrate reset to original state.But this does not also mean that the residual charge in LCDs is discharged.
Therefore, the drawback that aforesaid way exists to guarantee that electric charge discharges completely, and follow-up use simultaneously also exists the problem of charge accumulation, eliminates the DeGrain of electrostatic, cause affecting Consumer's Experience.
Summary of the invention
The invention provides a kind of electric charge method for releasing and device of LCDs, discharge not exclusively to solve electric charge in prior art, eliminate the unconspicuous problem of electrostatic efficiency.
First aspect, embodiments provides a kind of electric charge method for releasing of LCDs, comprises.
Obtain and put out screen steering order for described LCDs;
Driving chip to described LCDs sends power ground instruction, with the positive-negative power ground connection by described driving chip;
Send to described driving chip and put out screen steering order, put out screen reset operation to control the execution of described driving chip.
Second aspect, the embodiment of the present invention additionally provides a kind of electric charge releasing means of LCDs, comprising:
Putting out screen steering order acquisition module, putting out screen steering order for obtaining for described LCDs;
Power ground instruction sending module, sends power ground instruction, with the positive-negative power ground connection by described driving chip for the driving chip to described LCDs;
Putting out screen steering order sending module, putting out screen steering order for sending to described driving chip, put out screen reset operation to control the execution of described driving chip.
The present invention by first obtain LCDs put out screen steering order, then the driving chip to LCDs sends power ground instruction respectively and puts out screen steering order, the electric charge of such inside liquid crystal can be discharged into ground wire automatically, guarantees that electric charge discharges completely, and LCDs puts out screen simultaneously.Solve electric charge and discharge incomplete problem, realize electric charge and discharge completely, do not affect the display effect of mobile phone when lighting screen next time simultaneously, promote Consumer's Experience.
Accompanying drawing explanation
By reading the detailed description done non-limiting example done with reference to the following drawings, other features, objects and advantages of the present invention will become more obvious:
Fig. 1 is the electric charge method for releasing schematic flow sheet of a kind of LCDs that the embodiment of the present invention one provides;
Fig. 2 is the electric charge method for releasing schematic flow sheet of a kind of LCDs that the embodiment of the present invention two provides;
Fig. 3 is the electric charge releasing means structural representation of a kind of LCDs that the embodiment of the present invention three provides.
Embodiment
Technical scheme of the present invention is further illustrated by embodiment below in conjunction with accompanying drawing.Be understandable that, specific embodiment described herein is only for explaining the present invention, but not limitation of the invention.It also should be noted that, for convenience of description, illustrate only part related to the present invention in accompanying drawing but not entire infrastructure.
Before in further detail exemplary embodiment being discussed, it should be mentioned that some exemplary embodiments are described as the process or method described as process flow diagram.Although every step is described as the process of order by process flow diagram, many steps wherein can be implemented concurrently, concomitantly or simultaneously.In addition, the order of every step can be rearranged.When its step completes, described process can be terminated, but can also have the additional step do not comprised in the accompanying drawings.Described process can correspond to method, function, code, subroutine, subroutine etc.
Embodiment one
Fig. 1 is the electric charge method for releasing schematic flow sheet of a kind of LCDs that the embodiment of the present invention one provides, and the present embodiment is applicable to the situation of LCDs electric charge release, and the method can be performed by the device performing arbitrarily the release of LCDs electric charge.As shown in Figure 1, the method comprises:
S110, obtain and put out screen steering order for described LCDs;
Exemplary, under mobile phone bright screen state, mobile phone normally shows, the screen steering order of putting out of LCDs can be put out screen key when user manually presses mobile phone, namely produce during cellular phone power supplies key, also can be user puts out the screen time realize mobile phone automatic extinguishing screen by setting mobile phone in advance, and what now produce LCDs puts out screen steering order.Here being preferably under bright screen state, putting out screen steering order when recognizing to produce when user presses power key for described LCDs.
S120, send power ground instruction, with the positive-negative power ground connection by described driving chip to the driving chip of described LCDs;
Exemplary, get put out screen steering order after, driving chip to LCDs sends power ground instruction, by chip for cell phone inside+-5V power supply by send order mode make it be connected with ground wire, because positive and negative two power leads are connected respectively with the substrate of LCDs, chip internal+-5V power supply can be discharged into cell phone mainboard or the external world by the electric charge in liquid crystal rapidly after being connected with ground wire.
S130, to send to described driving chip and put out screen steering order, perform put out screen reset operation to control described driving chip.
Exemplary, after getting and putting out screen steering order, the screen steering order of putting out got is sent to mobile phone drive chip, and mobile phone drive chip performs after receiving and putting out screen steering order and puts out screen reset operation, completes and puts out screen task.Such as, when mobile phone drive chip receive put out screen steering order after, perform put out screen reset operation, according to normal power down sequential close chip power supply, mobile phone puts out screen, complete put out screen operation.
The electric charge method for releasing of the liquid crystal display that the embodiment of the present invention one provides, screen steering order is put out by what first obtain LCDs, then the driving chip to LCDs sends power ground instruction respectively and puts out screen steering order, the electric charge of such inside liquid crystal can be discharged into ground wire automatically, guarantee that electric charge discharges completely, LCDs puts out screen simultaneously.Solve electric charge and discharge incomplete problem, realize electric charge and discharge completely, do not affect the display effect of mobile phone when lighting screen next time simultaneously, promote Consumer's Experience.
Embodiment two
Fig. 2 is the electric charge method for releasing schematic flow sheet of a kind of LCDs that the embodiment of the present invention two provides, and the present embodiment two is optimized based on above-described embodiment one.Further, obtain for described LCDs put out screen steering order after, also comprise: produce setting screen idsplay order, send to described driving chip, control described LCDs to indicate described driving chip and present setting screen, described setting screen is the picture that the liquid crystal layer of described LCDs presents when returning to original state.As shown in Figure 2, the method comprises:
S210, obtain and put out screen steering order for described LCDs;
S220, produce setting screen idsplay order, send to described driving chip, control described LCDs present setting screen to indicate described driving chip, described setting screen is the picture that the liquid crystal layer of described LCDs presents when returning to original state;
Exemplary, get put out screen steering order after, the instruction that can produce setting screen display is sent to driving chip, control LCDs to indicate driving chip and present the picture preset, described setting screen is preferably blank screen picture, the picture presented when namely liquid crystal layer returns to original state.
Further, described blank screen picture realizes by sending blank screen data to mobile phone, and after blank screen data send, LCDs directly shows blank screen picture.
But it should be noted that and show blank screen picture here do not make mobile phone put out screen, blackout screen picture is that irregular data requirement is arranged, but the electric charge of the inside still exists, and the now polarization of liquid crystal can change, and electric charge can turn to rapidly according to polarization simultaneously.The benefit sending blank screen picture is, can avoid the problem that screen flicker occurs when LCDs is discharged, also can present the state of blank screen fast to user, shorten screen fall time when putting out screen.
S230, send power ground instruction, with the positive-negative power ground connection by described driving chip to the driving chip of described LCDs;
S240, to send to described driving chip and put out screen steering order, perform put out screen reset operation to control described driving chip.
The electric charge method for releasing of the liquid crystal display that the embodiment of the present invention two provides, blank screen picture is directly shown by screen after transmission blank screen data, then the driving chip to LCDs sends power ground instruction respectively and puts out screen steering order, such LCDs shows blank screen fast, the electric charge of inside liquid crystal can be discharged into ground wire automatically simultaneously, guarantee that electric charge discharges completely, promote Consumer's Experience.
Embodiment three
Fig. 3 is the electric charge releasing means structural representation of a kind of LCDs that the embodiment of the present invention three provides, and this device can by software and/or hardware implementing.As shown in Figure 3, this device comprises: put out screen steering order acquisition module 310, power ground instruction sending module 320 and put out screen steering order sending module 330.Wherein, putting out screen steering order acquisition module 310, putting out screen steering order for obtaining for described LCDs; Power ground instruction sending module 320, sends power ground instruction, with the positive-negative power ground connection by described driving chip for the driving chip to described LCDs; Putting out screen steering order sending module 330, putting out screen steering order for sending to described driving chip, put out screen reset operation to control the execution of described driving chip.
Further, also comprise: setting screen idsplay order generation module, for obtain for described LCDs put out screen steering order after, produce setting screen idsplay order, send to described driving chip, control described LCDs to indicate described driving chip and present setting screen, described setting screen is the picture that the liquid crystal layer of described LCDs presents when returning to original state.Preferably, described setting screen is blank screen picture.
Further, put out screen steering order acquisition module specifically for: under bright screen state, put out screen steering order when recognizing to produce when user presses power key for described LCDs.
The electric charge releasing means of the LCDs that the embodiment of the present invention provides can be used for the electric charge method for releasing performing the LCDs that the embodiment of the present invention provides, and possesses and performs the corresponding functional module of said method and beneficial effect.The not ins and outs of detailed description in the present embodiment, the method that can provide see the embodiment of the present invention one and embodiment two.
Note, above are only preferred embodiment of the present invention and institute's application technology principle.Skilled person in the art will appreciate that and the invention is not restricted to specific embodiment described here, various obvious change can be carried out for a person skilled in the art, readjust and substitute and can not protection scope of the present invention be departed from.Therefore, although be described in further detail invention has been by above embodiment, the present invention is not limited only to above embodiment, when not departing from the present invention's design, can also comprise other Equivalent embodiments more, and scope of the present invention is determined by appended right.
Claims (8)
1. an electric charge method for releasing for LCDs, is characterized in that, comprising:
Obtain and put out screen steering order for described LCDs;
Driving chip to described LCDs sends power ground instruction, with the positive-negative power ground connection by described driving chip;
Send to described driving chip and put out screen steering order, put out screen reset operation to control the execution of described driving chip.
2. method according to claim 1, is characterized in that, obtain for described LCDs put out screen steering order after, also comprise:
Produce setting screen idsplay order, send to described driving chip, control described LCDs present setting screen to indicate described driving chip, described setting screen is the picture that the liquid crystal layer of described LCDs presents when returning to original state.
3. method according to claim 2, is characterized in that, described setting screen is blank screen picture.
4. method according to claim 1, is characterized in that, the screen steering order of putting out obtained for described LCDs comprises:
Under bright screen state, put out screen steering order when recognizing to produce when user presses power key for described LCDs.
5. an electric charge releasing means for LCDs, is characterized in that, comprising:
Putting out screen steering order acquisition module, putting out screen steering order for obtaining for described LCDs;
Power ground instruction sending module, sends power ground instruction, with the positive-negative power ground connection by described driving chip for the driving chip to described LCDs;
Putting out screen steering order sending module, putting out screen steering order for sending to described driving chip, put out screen reset operation to control the execution of described driving chip.
6. device according to claim 5, is characterized in that, also comprises:
Setting screen idsplay order generation module, for obtain for described LCDs put out screen steering order after, produce setting screen idsplay order, send to described driving chip, control described LCDs to indicate described driving chip and present setting screen, described setting screen is the picture that the liquid crystal layer of described LCDs presents when returning to original state.
7. device according to claim 6, is characterized in that, described setting screen is blank screen picture.
8. device according to claim 5, is characterized in that, put out screen steering order acquisition module specifically for: under bright screen state, put out screen steering order when recognizing to produce when user presses power key for described LCDs.
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| CN201510594197.0A CN105118460B (en) | 2015-09-17 | 2015-09-17 | The electric charge method for releasing and device of a kind of LCDs |
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| CN201510594197.0A CN105118460B (en) | 2015-09-17 | 2015-09-17 | The electric charge method for releasing and device of a kind of LCDs |
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| CN105118460B CN105118460B (en) | 2017-10-31 |
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| CN106847206A (en) * | 2016-12-28 | 2017-06-13 | 深圳天珑无线科技有限公司 | Display screen automatic discharging method, display screen and mobile terminal |
| WO2019011064A1 (en) * | 2017-07-13 | 2019-01-17 | 昆山国显光电有限公司 | Method and apparatus for controlling power source of display screen, and storage medium and electronic device |
| CN109637494A (en) * | 2019-02-02 | 2019-04-16 | 京东方科技集团股份有限公司 | Driving method, the power supply IC, display device of display control circuit |
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| CN105118460B (en) | 2017-10-31 |
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Address after: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Patentee after: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. Address before: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Patentee before: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. |