CN105304025B - Organic Light Emitting Diode drive control method and system - Google Patents
Organic Light Emitting Diode drive control method and system Download PDFInfo
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- CN105304025B CN105304025B CN201510901061.XA CN201510901061A CN105304025B CN 105304025 B CN105304025 B CN 105304025B CN 201510901061 A CN201510901061 A CN 201510901061A CN 105304025 B CN105304025 B CN 105304025B
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Abstract
The present invention relates to a kind of Organic Light Emitting Diode drive control method, comprise the following steps：Gather brightness regulated signal；The brightness regulated signal and the first signal threshold value are compared, read the first predeterminated voltage corresponding to brightness regulated signal；The cathode voltage of Organic Light Emitting Diode is adjusted, the cathode voltage of Organic Light Emitting Diode is reached the first predeterminated voltage.The drive control method of above-mentioned Organic Light Emitting Diode, the cathode voltage of Organic Light Emitting Diode can be adjusted according to brightness regulated signal, so as to reduce the power consumption of the image element circuit residing for Organic Light Emitting Diode.
Description
Technical field
The present invention relates to organic light-emitting diode display field, more particularly to Organic Light Emitting Diode drive control method
And system.
Background technology
Traditional organic light emitting diode display, including flexible PCB, driving chip, viewing area etc., viewing area by
Many individual pixel compositions, wherein each pixel is corresponding with image element circuit, as shown in figure 1, Fig. 1 is image element circuit schematic diagram, the picture
Plain circuit by data signal line Vdata, scan signal line S (n), storage capacitance Cs, switching transistor T1, driving transistor T2,
Organic Light Emitting Diode OLED, positive power supply ELVdd and negative sense power supply ELVss compositions.Wherein, data signal line Vdata number
According to voltage typically because of the change of the brightness of display picture dynamic change, and positive power supply ELVdd voltage and organic light emission two
Pole pipe cathode voltage (i.e. negative sense power supply ELVss voltage) is changeless.
Due to data signal line Vdata data voltage because of the change of the brightness of display picture dynamic change, it is and organic
Light emitting diode cathode voltage (i.e. negative sense power supply ELVss voltage) always immobilizes, and will so cause image element circuit work(
Consumption wastes.
The content of the invention
Based on this, it is necessary to always immobilized for Organic Light Emitting Diode cathode voltage, and caused by image element circuit
Power consumption waste the problem of, there is provided a kind of Organic Light Emitting Diode drive control method and system.
A kind of Organic Light Emitting Diode drive control method, it is characterised in that comprise the following steps：Gather brightness regulation letter
Number；The brightness regulated signal and the first signal threshold value are compared, read the first default electricity corresponding to brightness regulated signal
Pressure；The cathode voltage of Organic Light Emitting Diode is adjusted, the cathode voltage of Organic Light Emitting Diode is reached the first predeterminated voltage.
The drive control method of above-mentioned Organic Light Emitting Diode, organic light-emitting diodes can be adjusted according to brightness regulated signal
The cathode voltage of pipe, so as to reduce the power consumption of the image element circuit residing for Organic Light Emitting Diode.
In one of the embodiments, the step of collection brightness regulated signal includes：Receive control instruction；Identification institute
State whether control instruction is brightness regulated signal.
In one of the embodiments, brightness regulated signal is compared with the first signal threshold value, reads brightness regulation
The step of the first predeterminated voltage corresponding to signal, includes：Judge whether the brightness regulated signal needs to adjust organic light emission two
The cathode voltage of pole pipe.
In one of the embodiments, the Organic Light Emitting Diode driving control system also comprises the following steps：Will be bright
Degree Regulate signal compares with secondary signal threshold value, reads the second predeterminated voltage corresponding to brightness regulated signal；Adjust organic
Light emitting diode driving voltage, the driving voltage of Organic Light Emitting Diode is set to reach the second predeterminated voltage.
In one of the embodiments, the brightness regulated signal compares with secondary signal threshold value, reads brightness regulation
The step of the second predeterminated voltage corresponding to signal, includes：Judge whether the brightness regulated signal needs to adjust organic light emission two
The driving voltage of pole pipe.
A kind of Organic Light Emitting Diode driving control system, it is characterised in that including：Acquisition module, for gathering brightness
Regulate signal；First presetting module, for the brightness regulated signal and the first signal threshold value to be compared, read brightness regulation
The first predeterminated voltage corresponding to signal；First control module, for adjusting Organic Light Emitting Diode cathode voltage, make organic hair
The cathode voltage of optical diode reaches the first predeterminated voltage.
The driving control system of above-mentioned Organic Light Emitting Diode, organic light-emitting diodes can be adjusted according to brightness regulated signal
The cathode voltage of pipe, so as to reduce the power consumption of the image element circuit residing for Organic Light Emitting Diode.
In one of the embodiments, the acquisition module includes：Receiving unit, for receiving control instruction；Identification is single
Member, for identifying whether the control instruction is brightness regulated signal.
In one of the embodiments, cathode voltage presetting module is included：First judging unit, it is described for judging
Whether brightness regulated signal needs to adjust the cathode voltage of Organic Light Emitting Diode.
In one of the embodiments, in addition to：Second presetting module, for by brightness regulated signal and secondary signal threshold
Value compares, and reads the second predeterminated voltage corresponding to brightness regulated signal；Second control module, for adjusting organic light emission two
Pole pipe driving voltage, the driving voltage of Organic Light Emitting Diode is set to reach the second predeterminated voltage.
In one of the embodiments, the second presetting module includes：Second judging unit, for judging the brightness regulation
Whether the driving voltage of regulation Organic Light Emitting Diode is needed.
Brief description of the drawings
Fig. 1 is the image element circuit figure of traditional Organic Light Emitting Diode；
Fig. 2 is the flow chart of one embodiment of the present invention Organic Light Emitting Diode drive control method；
Fig. 3 is the module diagram of one embodiment of the present invention Organic Light Emitting Diode driving control system.
Embodiment
With reference to embodiment, the content of the invention of the present invention is described further.
Referring to Fig. 2, Fig. 2 is the flow chart of the present embodiment Organic Light Emitting Diode drive control method, the present invention discloses
A kind of Organic Light Emitting Diode drive control method, comprises the following steps：
S110：Gather brightness regulated signal；
In this step, the control instruction outside receiving is first had to, and row decoding is entered to control instruction, identifies the control
Whether instruction is brightness regulated signal, if not brightness regulated signal, this step is without any operation；If brightness regulation is believed
Number, the brightness regulated signal is transferred in following S120 steps or S140 steps, carries out next step operation.
S120：The brightness regulated signal and secondary signal threshold value are compared, read corresponding to brightness regulated signal
Second predeterminated voltage；
Secondary signal threshold value in this step is voltage corresponding to a range of brightness regulated signal being manually set
Value, these magnitudes of voltage are that Organic Light Emitting Diode can be made to reach predetermined luminance corresponding to each different brightness regulated signal
Corresponding magnitude of voltage.The brightness regulated signal collected in S110 steps and secondary signal threshold value are compared, according to contrast
As a result judged, judge whether brightness regulated signal needs to adjust the driving voltage of Organic Light Emitting Diode, if without adjusting,
Then keep the driving voltage of Organic Light Emitting Diode constant；If desired adjust, then search and read the brightness regulation letter collected
Corresponding to number Organic Light Emitting Diode can be made to reach the second predeterminated voltage corresponding to predetermined luminance.
S130：Organic Light Emitting Diode driving voltage is adjusted, making the driving voltage of Organic Light Emitting Diode, to reach second pre-
If voltage.
In this step, Organic Light Emitting Diode driving voltage is adjusted, makes the driving electricity of Organic Light Emitting Diode
Pressure reaches the second predeterminated voltage read in step S120, so just completes the regulation of Organic Light Emitting Diode driving voltage, enters
And the brightness of Organic Light Emitting Diode is set to reach predetermined luminance.
In addition to the step of above-mentioned driving voltage to Organic Light Emitting Diode is adjusted, this control method also includes as follows
Step：
S140：Brightness regulated signal and the first signal threshold value are compared, read first corresponding to brightness regulated signal
Predeterminated voltage；
The brightness regulated signal collected in S110 steps and the first signal threshold value are compared, the first signal threshold value is same
It is magnitude of voltage corresponding to a range of brightness regulated signal being manually set, these magnitudes of voltage are that each different brightness is adjusted
It can make the magnitude of voltage that the power consumption of image element circuit minimizes corresponding to section signal.Judged according to comparing result, judged bright
Whether degree Regulate signal needs to adjust the cathode voltage of Organic Light Emitting Diode, if without regulation, keeps organic light-emitting diodes
The cathode voltage of pipe is constant；If desired adjust, then pixel can be made corresponding to the brightness regulated signal collected by searching and reading
The first predeterminated voltage that the power consumption of circuit minimizes.
S150：Organic Light Emitting Diode cathode voltage is adjusted, making the cathode voltage of Organic Light Emitting Diode, to reach first pre-
If voltage.
In this step, Organic Light Emitting Diode cathode voltage is adjusted, makes the cathode voltage of Organic Light Emitting Diode
Reach the first predeterminated voltage read in step S140, so just complete the regulation of Organic Light Emitting Diode cathode voltage, and then
It is preferably minimized the image element circuit power consumption of Organic Light Emitting Diode.
Refer to Fig. 3, the invention discloses a kind of Organic Light Emitting Diode driving control system 100, including acquisition module
110th, the first presetting module 120, the first control module 130, the second presetting module 140 and the second control module 150.
Wherein acquisition module 110, be mainly used in gather brightness regulated signal, the acquisition module mainly include receiving unit with
Recognition unit, the receiving unit are used to receive external control instruction, and the recognition unit is mainly used in identifying that receiving unit is received
External control instruction whether be brightness regulated signal, if brightness regulated signal, it is pre- that brightness regulated signal is transferred to first
If the presetting module 140 of module 120 or second, in order to act in next step.
Second presetting module 140 is used to compare brightness regulated signal and secondary signal threshold value, reads brightness regulation
The second predeterminated voltage corresponding to signal.Specifically, second presetting module includes the second judging unit, second judging unit
It can be judged whether to need the driving voltage for adjusting Organic Light Emitting Diode according to brightness regulated signal.
If desired the driving voltage of Organic Light Emitting Diode is adjusted, the second control module 150 just adjusts organic light-emitting diodes
Pipe driving voltage, the driving voltage of Organic Light Emitting Diode is reached the second predeterminated voltage, and then reach Organic Light Emitting Diode
To predetermined luminance.
First presetting module 120, for the brightness regulated signal and the first signal threshold value that will be received at acquisition module 110
Compare, read the first predeterminated voltage corresponding to brightness regulated signal.Specifically, first presetting module 120 includes first
Judging unit, first judging unit are mainly used in judging whether the brightness regulated signal needs to adjust Organic Light Emitting Diode
Cathode voltage.
If desired adjust, then brightness regulated signal and the first signal threshold value compare, first signal threshold value has
In certain limit corresponding to brightness regulated signal, cathode voltage that image element circuit can making machine light emitting diode is least in power-consuming
Value；It can so contrast corresponding to brightness regulated signal, image element circuit power consumption can be made to reach minimum light-emitting diodes tube cathode
The first predeterminated voltage.
First control module 130, for adjusting Organic Light Emitting Diode cathode voltage, make the negative electrode of Organic Light Emitting Diode
Voltage reaches the first predeterminated voltage, because the first predeterminated voltage is to make image element circuit corresponding to the brightness regulated signal
The cathode voltage for the Organic Light Emitting Diode that power consumption is preferably minimized, therefore, the power consumption of image element circuit at this moment are to fall below most
It is low.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope that this specification is recorded all is considered to be.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more specific and detailed, but simultaneously
Can not therefore it be construed as limiting the scope of the patent.It should be pointed out that come for one of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
- A kind of 1. Organic Light Emitting Diode drive control method, it is characterised in that comprise the following steps：Gather brightness regulated signal；The brightness regulated signal and the first signal threshold value are compared, read the first default electricity corresponding to brightness regulated signal Pressure；Organic Light Emitting Diode cathode voltage is adjusted, the cathode voltage of Organic Light Emitting Diode is reached the first predeterminated voltage.
- 2. Organic Light Emitting Diode drive control method according to claim 1, it is characterised in that the collection brightness is adjusted The step of saving signal includes：Receive control instruction；Identify whether the control instruction is brightness regulated signal.
- 3. Organic Light Emitting Diode drive control method according to claim 1, it is characterised in that institute believes brightness regulation The step of number being compared with the first signal threshold value, reading the first predeterminated voltage corresponding to brightness regulated signal includes：Judge whether the brightness regulated signal needs to adjust the cathode voltage of Organic Light Emitting Diode.
- 4. Organic Light Emitting Diode drive control method according to claim 1, it is characterised in that also include following step Suddenly：Brightness regulated signal and secondary signal threshold value are compared, read the second predeterminated voltage corresponding to brightness regulated signal；Organic Light Emitting Diode driving voltage is adjusted, the driving voltage of Organic Light Emitting Diode is reached the second predeterminated voltage.
- 5. Organic Light Emitting Diode drive control method according to claim 4, it is characterised in that the brightness regulation letter The step of number being compared with secondary signal threshold value, reading the second predeterminated voltage corresponding to brightness regulated signal includes：Judge whether the brightness regulated signal needs to adjust the driving voltage of Organic Light Emitting Diode.
- A kind of 6. Organic Light Emitting Diode driving control system, it is characterised in that including：Acquisition module, for gathering brightness regulated signal；First presetting module, for the brightness regulated signal and the first signal threshold value to be compared, read brightness regulated signal The first corresponding predeterminated voltage；First control module, for adjusting Organic Light Emitting Diode cathode voltage, reach the cathode voltage of Organic Light Emitting Diode To the first predeterminated voltage.
- 7. Organic Light Emitting Diode driving control system according to claim 6, it is characterised in that the acquisition module bag Include：Receiving unit, for receiving control instruction；Recognition unit, for identifying whether the control instruction is brightness regulated signal.
- 8. Organic Light Emitting Diode driving control system according to claim 6, it is characterised in that the described first default mould Block includes：First judging unit, for judging whether the brightness regulated signal needs to adjust the negative electrode electricity of Organic Light Emitting Diode Pressure.
- 9. Organic Light Emitting Diode driving control system according to claim 6, it is characterised in that the organic light emission two Pole pipe driving control system also includes：Second presetting module, for brightness regulated signal and secondary signal threshold value to be compared, it is right to read brightness regulated signal institute The second predeterminated voltage answered；Second control module, for adjusting Organic Light Emitting Diode driving voltage, reach the driving voltage of Organic Light Emitting Diode To the second predeterminated voltage.
- 10. Organic Light Emitting Diode driving control system according to claim 9, it is characterised in that the second presetting module Including：Second judging unit, for judging whether the brightness regulation needs to adjust the driving voltage of Organic Light Emitting Diode.
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| CN201510901061.XA CN105304025B (en) | 2015-12-08 | 2015-12-08 | Organic Light Emitting Diode drive control method and system |
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| CN201510901061.XA CN105304025B (en) | 2015-12-08 | 2015-12-08 | Organic Light Emitting Diode drive control method and system |
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| CN105304025B true CN105304025B (en) | 2018-01-16 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109992147B (en) * | 2017-12-29 | 2022-10-11 | 上海和辉光电股份有限公司 | Control method and device for cathode voltage of OLED display module |
| CN108154847A (en) * | 2018-01-19 | 2018-06-12 | 昆山国显光电有限公司 | The driving device and driving method of organic light emitting display |
| CN108648723B (en) * | 2018-05-14 | 2020-07-24 | 昆山国显光电有限公司 | Method and circuit for reducing power consumption of display screen, display screen and electronic terminal |
| CN112086067B (en) * | 2019-06-14 | 2022-05-13 | 华为技术有限公司 | Voltage adjusting method and electronic equipment |
| CN112071266A (en) * | 2020-09-17 | 2020-12-11 | 京东方科技集团股份有限公司 | OLED cathode voltage correction method and system, display module and brightness adjustment method |
| CN113781943B (en) * | 2021-08-06 | 2023-09-22 | 武汉天马微电子有限公司 | Display substrate, display panel, display device and voltage adjustment method |
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