CN105070264A - Common voltage adjustment system and method of liquid crystal display panel - Google Patents
Common voltage adjustment system and method of liquid crystal display panel Download PDFInfo
- Publication number
- CN105070264A CN105070264A CN201510562774.8A CN201510562774A CN105070264A CN 105070264 A CN105070264 A CN 105070264A CN 201510562774 A CN201510562774 A CN 201510562774A CN 105070264 A CN105070264 A CN 105070264A
- Authority
- CN
- China
- Prior art keywords
- display panels
- flicker value
- electric voltage
- common electric
- value
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 13
- 230000000052 comparative effect Effects 0.000 claims description 10
- 230000009467 reduction Effects 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 230000007547 defect Effects 0.000 abstract description 4
- 238000001514 detection method Methods 0.000 abstract 3
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 230000007423 decrease Effects 0.000 description 3
- 230000033772 system development Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Landscapes
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
The invention discloses a common voltage adjustment system and method of a liquid crystal display panel. The system includes a detection device which is used for acquiring the flicker value of the liquid crystal display panel, a micro controller which is connected with the detection device and is used for acquiring a common voltage value outputted to the liquid crystal display panel according to the flicker value of the liquid crystal display panel and acquiring a corresponding common voltage value when the flicker value of the liquid crystal display panel is minimum, and a common voltage output device which is connected with the micro controller and is used for outputting common voltage to the liquid crystal display panel according to the common voltage value. According to the common voltage adjustment system and method of the liquid crystal display panel, the detection device, the micro controller and the common voltage output device are adopted, and therefore, the flicker value can be automatically detected, and the common voltage can be adjusted, and optimal common voltage can be obtained. With the common voltage adjustment system and method of the liquid crystal display panel adopted, the defect of low credibility and accuracy of common voltage which is caused by manual adjustment of the common voltage can be eliminated, and the production cost of the system can be decreased, and the production efficiency of the liquid crystal display panel can be improved.
Description
Technical field
The present invention relates to technical field of liquid crystal display, particularly relate to a kind of common electric voltage adjustment System and method of display panels.
Background technology
When manufacturing display panels, for obtaining the optimum voltage value driving display panels, generally rotating on the special adjusting knob of common electric voltage with ceramic screw cutter, making the flicker of picture central authorities reach minimum.Fig. 1 is the electrical block diagram of the common electric voltage adjustment of display panels in prior art, as shown in Figure 1, slide rheostat R is connected between power end VDD and earth terminal, voltage between slide rheostat slide plate and earth terminal is common electric voltage output terminal Vcom, by regulating the slide plate of slide rheostat R, change the value of common electric voltage output terminal Vcom.In above-mentioned manual adjusting style, common electric voltage is determined by the flicker level of eye-observation picture, human eye observation makes best common electric voltage vary with each individual, cause the confidence level of common electric voltage and precision not high, manually adjust common electric voltage labor intensity during mass production large, display panels production efficiency is low.
At present, the controller adopting PC (PersonalComputer) machine to adjust as common electric voltage in undersized common electric voltage of LCD panel debugging, this control system comprises upper computer module, slave computer module, host computer and slave computer coupling part, software section comprises the parts such as host computer interface exploitation and communication protocol, system development costs is very high, and the common electric voltage of the display panels not being suitable for all dimensions adjusts.
Summary of the invention
The invention provides a kind of common electric voltage adjustment System and method of display panels, overcome in prior art and cause by human eye adjustment common electric voltage the defect that the confidence level of common electric voltage and precision are not high, decrease the production cost of system.
First aspect, embodiments provide a kind of common electric voltage adjustment System of display panels, described system comprises:
Arrangement for detecting, for obtaining the flicker value of described display panels;
Microcontroller, is connected with described arrangement for detecting, obtains for the flicker value according to described display panels the common electric voltage value exported to described display panels, and common electric voltage value corresponding when the flicker value obtaining described display panels is minimum;
Common electric voltage output unit, is connected with described microcontroller, for according to described common electric voltage value to display panels outputting common voltage.
Further, described microcontroller comprises:
Numerical value comparing unit, for the flicker value that more described display panels is current, and the flicker value of the described display panels last time of record, the current flicker value of described display panels is corresponding with the current common electric voltage being applied to described display panels, and the flicker value of described display panels last time is corresponding with the common electric voltage that the last time is applied to described display panels;
Control chip, for the comparative result according to described numerical value comparing unit, increase and be applied to the common electric voltage that the common electric voltage of described display panels or reduction are applied to described display panels, until when the flicker value of described display panels is minimum, obtain corresponding common electric voltage value.
Further, described control chip is used for:
Be applied to the common electric voltage value that described display panels is preset;
Be applied to the magnitude of voltage that described display panels is less than default common electric voltage;
If current flicker value is less than last flicker value, reduce the common electric voltage being applied to described display panels, according to the flicker value of arrangement for detecting detecting, upgrade current flicker value and last flicker value, by that analogy, until current flicker value is greater than previous flicker value, common electric voltage corresponding to last flicker value is best common electric voltage;
If current flicker value is greater than last flicker value, increase the default common electric voltage being applied to described display panels, according to the flicker value of arrangement for detecting detecting, upgrade current flicker value and last flicker value, if current flicker value is less than last flicker value, increase the common electric voltage being applied to described display panels, by that analogy, until the current flicker value of arrangement for detecting detecting is greater than last flicker value, common electric voltage corresponding to last flicker value is best common electric voltage.
Further, the flicker value of the display panels that described arrangement for detecting obtains is decimal data, and described microcontroller also comprises:
System converter, is connected with described arrangement for detecting and described numerical value comparing unit respectively, for metric described flicker value is converted to binary described flicker value.
Further, described numerical value comparing unit comprises N number of digital comparator, the binary number of each described digital comparator for comparing two one, and the figure place of binary data that wherein N is changed by described flicker value is determined.
Second aspect, the embodiment of the present invention additionally provides a kind of method for adjusting common voltage of liquid crystal display module panel, comprising:
Arrangement for detecting obtains the flicker value of described display panels;
Microcontroller obtains the common electric voltage value exported to described display panels according to the flicker value of described arrangement for detecting, and common electric voltage value corresponding when the flicker value obtaining described display panels is minimum;
The described common electric voltage value that common electric voltage output unit is determined according to described microcontroller is to display panels outputting common voltage.
Further, described microcontroller comprises numerical value comparing unit and control chip, described microcontroller obtains the common electric voltage value exported to described display panels according to the flicker value of arrangement for detecting, and common electric voltage value corresponding when the flicker value obtaining described display panels is minimum comprises:
The flicker value that the more described display panels of numerical value comparing unit is current, and the flicker value of the described display panels last time of record, the current flicker value of described display panels is corresponding with the current common electric voltage being applied to described display panels, and the flicker value of described display panels last time is corresponding with the common electric voltage that the last time is applied to described display panels;
Control chip is according to the comparative result of described numerical value comparing unit, increase and be applied to the common electric voltage that the common electric voltage of described display panels or reduction are applied to described display panels, until when the flicker value of described display panels is minimum, obtain corresponding common electric voltage value.
Further, described control chip is according to the comparative result of described numerical value comparing unit, increase and be applied to the common electric voltage that the common electric voltage of described display panels or reduction are applied to described display panels, until when the flicker value of described display panels is minimum, obtains corresponding common electric voltage value and comprise:
Be applied to the common electric voltage value that described display panels is preset;
Be applied to the magnitude of voltage that described display panels is less than default common electric voltage;
If current flicker value is less than last flicker value, reduce the common electric voltage being applied to described display panels, according to the flicker value of arrangement for detecting detecting, upgrade current flicker value and last flicker value, by that analogy, until current flicker value is greater than previous flicker value, common electric voltage corresponding to last flicker value is best common electric voltage;
If current flicker value is greater than last flicker value, increase the default common electric voltage being applied to described display panels, according to the flicker value of arrangement for detecting detecting, upgrade current flicker value and last flicker value, if current flicker value is less than last flicker value, increase the common electric voltage being applied to described display panels, by that analogy, until the current flicker value of arrangement for detecting detecting is greater than last flicker value, common electric voltage corresponding to last flicker value is best common electric voltage.
Further, the flicker value of the display panels that described arrangement for detecting obtains is decimal data, and described microcontroller also comprises system converter, and described system converter is connected with described arrangement for detecting and described numerical value comparing unit respectively; Described method also comprises:
Metric described flicker value is converted to binary described flicker value by described system converter.
Further, described numerical value comparing unit comprises N number of digital comparator, the binary number of each described digital comparator for comparing two one, and the figure place of binary data that wherein N is changed by described flicker value is determined.
Technical scheme provided by the invention, on the one hand by the common electric voltage adjustment System of arrangement for detecting, microcontroller and common electric voltage output unit composition display panels, described system performs method of adjustment, realize the automatic adjustment of the common electric voltage of display panels, the common electric voltage confidence level that the common electric voltage overcoming artificial adjustment display panels causes and the not high defect of precision, simultaneously by adopting microcontroller, decrease the cost of system development, reduce the labour intensity of staff, improve the production efficiency of display panels.
Accompanying drawing explanation
Fig. 1 is the electrical block diagram of the common electric voltage adjustment of display panels in prior art;
Fig. 2 is the structural representation of the common electric voltage adjustment System of a kind of display panels that the embodiment of the present invention one provides;
Fig. 3 is the structural representation of the common electric voltage adjustment System of a kind of display panels that the embodiment of the present invention two provides;
Fig. 4 is the structural representation of the logical circuit of the digital comparator that the embodiment of the present invention two provides;
Fig. 5 is the schematic flow sheet of the method for adjusting common voltage of a kind of display panels that the embodiment of the present invention three provides;
Fig. 6 is the schematic flow sheet of the method for adjusting common voltage of a kind of display panels that the embodiment of the present invention four provides.
Embodiment
For further setting forth the present invention, for reaching the technological means and effect that predetermined goal of the invention takes, below in conjunction with accompanying drawing and preferred embodiment, to the embodiment of a kind of common electric voltage adjustment System of display panels proposed according to the present invention and method, structure, feature and effect thereof, be described in detail as follows.
Embodiment one
Fig. 2 is the structural representation of the common electric voltage adjustment System of a kind of display panels that the embodiment of the present invention one provides.Described system is used for the common electric voltage of adjustment display panels automatically, and see Fig. 2, described system specifically comprises:
Arrangement for detecting 11, for obtaining the flicker value of display panels 10;
Microcontroller 12, is connected with arrangement for detecting 11, obtains for the flicker value according to display panels 10 the common electric voltage value exported to display panels 10, and common electric voltage value corresponding when the flicker value obtaining display panels 10 is minimum;
Common electric voltage output unit 13, is connected with microcontroller 12, for according to 1 common electric voltage value to display panels 10 outputting common voltage.
Wherein, microcontroller 12 and common electric voltage output unit 13 on a printed circuit integrated, arrangement for detecting 11 is independent of outside printed circuit board (PCB).When arrangement for detecting 11 detects the flicker value of display panels 10, arrangement for detecting 11 is connected with microcontroller 12 by the arrangement for detecting interface on printed circuit board (PCB); When the common electric voltage adjustment without the need to detecting display panels 10 flicker value or display panels 10 is complete, arrangement for detecting 11 and the arrangement for detecting interface on printed circuit board (PCB) are disconnected.Therefore, the common electric voltage adjustment System of multiple display panels 10 can share an arrangement for detecting 11.Arrangement for detecting 11 can be optic probe or image collecting device.Described flicker value can be that arrangement for detecting directly exports, and also can be that multiple image exports through process.Exemplary, when arrangement for detecting 11 is image collecting device, described flicker value is that the process of comparing of last collection moment of described image collecting device and rear one two field picture gathering the moment obtains.
Common electric voltage of LCD panel adjustment System principle of work: arrangement for detecting 11 is connected by the arrangement for detecting interface on printed circuit board (PCB) with microcontroller 12, arrangement for detecting 11 gathers the flicker value of display panels 10, microcontroller 12 periodically obtains described flicker value, the current value of the more described flicker value of microcontroller 12 and last numerical value, adjust corresponding outputting common voltage, common electric voltage, according to above-mentioned outputting common voltage, is outputted to the driver module of display panels 10 by common electric voltage output unit 13.Arrangement for detecting 11 continues the flicker value of detecting display panels 10, microcontroller 12 adjusts the output valve of common electric voltage automatically according to current flicker value and last flicker value, common electric voltage output unit 13 is according to the output valve of above-mentioned common electric voltage, until common electric voltage value corresponding when the flicker value obtaining display panels 10 is minimum, the i.e. best common electric voltage value of display panels 10, now, microcontroller 12 outputs to display panels 10 after being fixed by common electric voltage, so far obtains the best common electric voltage value of display panels 10.
The technical scheme that the present embodiment provides, by the system of arrangement for detecting, microcontroller and common electric voltage output unit composition, automatic adjustment also exports best common electric voltage, staff is avoided to adjust VR knob and the common electric voltage caused by human eye observation's display panels is with a low credibility and the defect of low precision, reduce labor intensity, the microcontroller adopted in system decreases the cost of system development, improves the production efficiency of display panels.
Embodiment two
On the basis of embodiment one, the common electric voltage adjustment System of described display panels, as shown in Figure 3, microcontroller 12 comprises:
Numerical value comparing unit 121, for the flicker value that more described display panels is current, and the flicker value of the described display panels last time of record, the current flicker value of described display panels is corresponding with the current common electric voltage being applied to described display panels, and the flicker value of described display panels last time is corresponding with the common electric voltage that the last time is applied to described display panels;
Control chip 122, for the comparative result according to numerical value comparing unit 121, increase and be applied to the common electric voltage that the common electric voltage of described display panels or reduction are applied to described display panels, until when the flicker value of described display panels is minimum, obtain corresponding common electric voltage value.
In the embodiment of the present invention, the control chip 122 in microcontroller 12 specifically for: be applied to described display panels preset common electric voltage value; Be applied to the magnitude of voltage that described display panels is less than default common electric voltage;
If current flicker value is less than last flicker value, reduce the common electric voltage being applied to described display panels, according to the flicker value of arrangement for detecting detecting, upgrade current flicker value and last flicker value, by that analogy, until current flicker value is greater than previous flicker value, common electric voltage corresponding to last flicker value is best common electric voltage;
If current flicker value is greater than last flicker value, increase the default common electric voltage being applied to described display panels, according to the flicker value of arrangement for detecting detecting, upgrade current flicker value and last flicker value, if current flicker value is less than last flicker value, increase the common electric voltage being applied to described display panels, by that analogy, until the current flicker value of arrangement for detecting detecting is greater than last flicker value, common electric voltage corresponding to last flicker value is best common electric voltage.
Further, the flicker value of the display panels 10 that arrangement for detecting 11 obtains is decimal data, microcontroller 12 also comprises: system converter 123, be connected with arrangement for detecting 11 and numerical value comparing unit 121 respectively, for metric described flicker value is converted to binary described flicker value.
After flicker value is converted to binary format by decimal format by system converter 123, the flicker value of binary format is sent to numerical value comparing unit 121.
Preferably, numerical value comparing unit 121 comprises N number of digital comparator, the binary number of each described digital comparator for comparing two one, and the figure place of binary data that wherein N is changed by described flicker value is determined.Exemplary, when the flicker value of binary format is 8, described numerical value comparing unit can comprise 8 digital comparators.
Digital comparator compares binary number A and B of two, and to judge the logical circuit of its size, comparative result has A>B, A<B and A=B tri-kinds of situations.One digit number value comparer is the basis of multidigit comparator circuit design.When A and B is a bit, they can only get 0 or 1 two kind of value, can draw the logical expression of 1 bit value comparer:
The logical circuit of described digital comparator as shown in Figure 4.According to the principle of above-mentioned one digit number value comparer, double figures value comparer and multidigit digital comparator can be designed.The technical scheme that the present embodiment provides, automatically the common electric voltage of display panels is adjusted by the numerical value comparing unit of microcontroller inside, control chip and system converter, avoid being adjusted and the visual common electric voltage determining display panels by mode manually, improve confidence level and the precision of outputting common voltage, further increase the production efficiency of display panels.The microcontroller wherein used possesses some functions of single-chip microcomputer (MicrocontrollerUnit), but simpler than single chip computer architecture, and function is more single-minded.
Embodiment three
Fig. 5 is the schematic flow sheet of the method for adjusting common voltage of a kind of display panels that the embodiment of the present invention three provides.Described method is applied in the common electric voltage adjustment System of the display panels described in embodiment one, and described method specifically comprises the steps:
Step S310, arrangement for detecting obtain the flicker value of described display panels;
Step S320, microcontroller obtain the common electric voltage value exported to described display panels according to the flicker value of described arrangement for detecting, and common electric voltage value corresponding when the flicker value obtaining described display panels is minimum;
The described common electric voltage value that step S330, common electric voltage output unit are determined according to described microcontroller is to display panels outputting common voltage.
Common electric voltage value corresponding when the flicker value of display panels described in above-mentioned steps S320 is minimum is the best common electric voltage of display panels.The current flicker value of the display panels that microcontroller timing or periodically reading arrangement for detecting are measured, and described current flicker value and last flicker value are compared, according to comparative result, described current flicker value or common electric voltage value corresponding to last flicker value is exported to display panels, arrangement for detecting continues the flicker value measuring display panels, current flicker value and last flicker value is upgraded in microcontroller, continue more above-mentioned two flicker value, and export corresponding common electric voltage.When arrangement for detecting detects the minimum flicker value of display panels, microcontroller stops adjustment common electric voltage value, common electric voltage value is fixed and exports best common electric voltage to display panels.Above-mentioned common electric voltage is adjusted by microcontroller, and the magnitude of voltage that common electric voltage adjusts at every turn is the integral multiple of minimum scale, makes common electric voltage can reach high-precision adjustment.
Further, the flicker value of the display panels that described arrangement for detecting obtains is decimal data, and described microcontroller also comprises system converter, and described system converter is connected with described arrangement for detecting and described numerical value comparing unit respectively; Described method also comprises: metric described flicker value is converted to binary described flicker value by described system converter.
Further, described numerical value comparing unit comprises N number of digital comparator, the binary number of each described digital comparator for comparing two one, and the figure place of binary data that wherein N is changed by described flicker value is determined.
The technical scheme that the present embodiment provides, obtain the flicker value of display panels by arrangement for detecting, microcontroller obtains the common electric voltage value and common electric voltage output unit that export to described display panels to display panels outputting common voltage according to described flicker value, automatic adjustment also obtains best common electric voltage, eliminate manually adjustment VR knob-operated, and the minimum flicker value of display panels is detected by arrangement for detecting, improve common electric voltage confidence level and the precision of display panels, improve the production efficiency of display panels.
Embodiment four
On the basis of embodiment three, further, in the method for adjusting common voltage of described display panels, described microcontroller comprises numerical value comparing unit and control chip, and above-mentioned steps S320 comprises further:
The flicker value that the more described display panels of numerical value comparing unit is current, and the flicker value of the described display panels last time of record, the current flicker value of described display panels is corresponding with the current common electric voltage being applied to described display panels, and the flicker value of described display panels last time is corresponding with the common electric voltage that the last time is applied to described display panels;
Control chip is according to the comparative result of described numerical value comparing unit, increase and be applied to the common electric voltage that the common electric voltage of described display panels or reduction are applied to described display panels, until when the flicker value of described display panels is minimum, obtain corresponding common electric voltage value.
Further, Fig. 6 is the schematic flow sheet of the method for adjusting common voltage of a kind of display panels that the embodiment of the present invention four provides, and as shown in Figure 6, this control chip is used for obtaining corresponding common electric voltage value as follows:
Step S410, be applied to described display panels preset common electric voltage value;
Step S420, be applied to the described display panels magnitude of voltage less than default common electric voltage;
Step S430, judge whether current flicker value is less than last flicker value, if so, perform step S440, otherwise, perform step S450;
Step S440, reduce to be applied to the common electric voltage of described display panels;
The flicker value of step S441, arrangement for detecting detecting, upgrades current flicker value and last flicker value;
Step S442, judge whether current flicker value is less than last flicker value, if so, perform step S460, otherwise, perform step S440;
Step S450, increase and be applied to the default common electric voltage of described display panels;
The flicker value of step S451, arrangement for detecting detecting, upgrades current flicker value and last flicker value;
Step S452, judge whether current flicker value is greater than last flicker value, if so, perform step S460, otherwise, perform step S450;
Common electric voltage corresponding to step S460, last flicker value is best common electric voltage;
The technical scheme that the present embodiment provides, by the system converter of microcontroller, flicker value is converted to binary number, binary number compares the common electric voltage obtaining exporting in numerical value comparing unit, automatic adjustment also obtains best common electric voltage, eliminate manually adjustment VR knob-operated, improve common electric voltage confidence level and the precision of display panels, improve the production efficiency of display panels.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be do not depart from technical solution of the present invention content, according to any simple modification that technical spirit of the present invention is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (10)
1. a common electric voltage adjustment System for display panels, is characterized in that, comprising:
Arrangement for detecting, for obtaining the flicker value of described display panels;
Microcontroller, is connected with described arrangement for detecting, obtains for the flicker value according to described display panels the common electric voltage value exported to described display panels, and common electric voltage value corresponding when the flicker value obtaining described display panels is minimum;
Common electric voltage output unit, is connected with described microcontroller, for according to described common electric voltage value to display panels outputting common voltage.
2. system according to claim 1, is characterized in that, described microcontroller comprises:
Numerical value comparing unit, for the flicker value that more described display panels is current, and the flicker value of the described display panels last time of record, the current flicker value of described display panels is corresponding with the current common electric voltage being applied to described display panels, and the flicker value of described display panels last time is corresponding with the common electric voltage that the last time is applied to described display panels;
Control chip, for the comparative result according to described numerical value comparing unit, increase and be applied to the common electric voltage that the common electric voltage of described display panels or reduction are applied to described display panels, until when the flicker value of described display panels is minimum, obtain corresponding common electric voltage value.
3. system according to claim 2, is characterized in that, described control chip is used for:
Be applied to the common electric voltage value that described display panels is preset;
Be applied to the magnitude of voltage that described display panels is less than default common electric voltage;
If current flicker value is less than last flicker value, reduce the common electric voltage being applied to described display panels, according to the flicker value of arrangement for detecting detecting, upgrade current flicker value and last flicker value, by that analogy, until current flicker value is greater than previous flicker value, common electric voltage corresponding to last flicker value is best common electric voltage;
If current flicker value is greater than last flicker value, increase the default common electric voltage being applied to described display panels, according to the flicker value of arrangement for detecting detecting, upgrade current flicker value and last flicker value, if current flicker value is less than last flicker value, increase the common electric voltage being applied to described display panels, by that analogy, until the current flicker value of arrangement for detecting detecting is greater than last flicker value, common electric voltage corresponding to last flicker value is best common electric voltage.
4. system according to claim 2, is characterized in that, the flicker value of the display panels that described arrangement for detecting obtains is decimal data, and described microcontroller also comprises:
System converter, is connected with described arrangement for detecting and described numerical value comparing unit respectively, for metric described flicker value is converted to binary described flicker value.
5. the system according to claim 2 or 4, it is characterized in that, described numerical value comparing unit comprises N number of digital comparator, the binary number of each described digital comparator for comparing two one, and the figure place of binary data that wherein N is changed by described flicker value is determined.
6. a method for adjusting common voltage for liquid crystal display module panel, is characterized in that, comprising:
Arrangement for detecting obtains the flicker value of described display panels;
Microcontroller obtains the common electric voltage value exported to described display panels according to the flicker value of described arrangement for detecting, and common electric voltage value corresponding when the flicker value obtaining described display panels is minimum;
The described common electric voltage value that common electric voltage output unit is determined according to described microcontroller is to display panels outputting common voltage.
7. method according to claim 6, it is characterized in that, described microcontroller comprises numerical value comparing unit and control chip, described microcontroller obtains the common electric voltage value exported to described display panels according to the flicker value of arrangement for detecting, and common electric voltage value corresponding when the flicker value obtaining described display panels is minimum comprises:
The flicker value that the more described display panels of numerical value comparing unit is current, and the flicker value of the described display panels last time of record, the current flicker value of described display panels is corresponding with the current common electric voltage being applied to described display panels, and the flicker value of described display panels last time is corresponding with the common electric voltage that the last time is applied to described display panels;
Control chip is according to the comparative result of described numerical value comparing unit, increase and be applied to the common electric voltage that the common electric voltage of described display panels or reduction are applied to described display panels, until when the flicker value of described display panels is minimum, obtain corresponding common electric voltage value.
8. method according to claim 7, it is characterized in that, described control chip is according to the comparative result of described numerical value comparing unit, increase and be applied to the common electric voltage that the common electric voltage of described display panels or reduction are applied to described display panels, until when the flicker value of described display panels is minimum, obtains corresponding common electric voltage value and comprise:
Be applied to the common electric voltage value that described display panels is preset;
Be applied to the magnitude of voltage that described display panels is less than default common electric voltage;
If current flicker value is less than last flicker value, reduce the common electric voltage being applied to described display panels, according to the flicker value of arrangement for detecting detecting, upgrade current flicker value and last flicker value, by that analogy, until current flicker value is greater than previous flicker value, common electric voltage corresponding to last flicker value is best common electric voltage;
If current flicker value is greater than last flicker value, increase the default common electric voltage being applied to described display panels, according to the flicker value of arrangement for detecting detecting, upgrade current flicker value and last flicker value, if current flicker value is less than last flicker value, increase the common electric voltage being applied to described display panels, by that analogy, until the current flicker value of arrangement for detecting detecting is greater than last flicker value, common electric voltage corresponding to last flicker value is best common electric voltage.
9. method according to claim 7, it is characterized in that, the flicker value of the display panels that described arrangement for detecting obtains is decimal data, and described microcontroller also comprises system converter, and described system converter is connected with described arrangement for detecting and described numerical value comparing unit respectively; Described method also comprises:
Metric described flicker value is converted to binary described flicker value by described system converter.
10. the method according to claim 7 or 9, it is characterized in that, described numerical value comparing unit comprises N number of digital comparator, the binary number of each described digital comparator for comparing two one, and the figure place of binary data that wherein N is changed by described flicker value is determined.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510562774.8A CN105070264B (en) | 2015-09-07 | 2015-09-07 | A kind of common electric voltage adjustment system and method for liquid crystal display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510562774.8A CN105070264B (en) | 2015-09-07 | 2015-09-07 | A kind of common electric voltage adjustment system and method for liquid crystal display panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105070264A true CN105070264A (en) | 2015-11-18 |
| CN105070264B CN105070264B (en) | 2017-09-26 |
Family
ID=54499617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510562774.8A Active CN105070264B (en) | 2015-09-07 | 2015-09-07 | A kind of common electric voltage adjustment system and method for liquid crystal display panel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105070264B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105607314A (en) * | 2016-03-17 | 2016-05-25 | 浙江新力光电科技有限公司 | Method and device for calibrating flicker degree of liquid crystal display module |
| CN105895038A (en) * | 2016-05-16 | 2016-08-24 | 深圳天珑无线科技有限公司 | Method and device for driving display module set in liquid crystal display screen |
| CN105976782A (en) * | 2016-07-15 | 2016-09-28 | 武汉华星光电技术有限公司 | Liquid crystal display device and driving method thereof |
| CN106297711A (en) * | 2016-09-18 | 2017-01-04 | 深圳市华星光电技术有限公司 | Display module drive circuit, driving method and display module |
| CN106501975A (en) * | 2016-11-11 | 2017-03-15 | 深圳市华星光电技术有限公司 | The method of testing and test device of display panels |
| CN107123398A (en) * | 2017-03-21 | 2017-09-01 | 青岛海信电器股份有限公司 | The VCOM voltage adjusting methods and device of LCDs |
| CN108766326A (en) * | 2018-04-25 | 2018-11-06 | 咸阳彩虹光电科技有限公司 | A kind of method and device obtaining Vcom by adjusting Flicker |
| CN109147709A (en) * | 2018-10-10 | 2019-01-04 | 武汉精测电子集团股份有限公司 | A kind of multiple spot adjusts the method and device of liquid crystal display panel Flicker |
| CN112102769A (en) * | 2020-10-28 | 2020-12-18 | 业成科技（成都）有限公司 | Display screen common voltage adjusting method and device, computer equipment and storage medium |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050050883A (en) * | 2003-11-26 | 2005-06-01 | 삼성전자주식회사 | Apparatus and method for adjusting common voltage |
| US20070146260A1 (en) * | 2005-12-28 | 2007-06-28 | Eun Kyeong Kang | Method and apparatus for driving liquid crystal display |
| CN101086569A (en) * | 2006-06-09 | 2007-12-12 | 群康科技(深圳)有限公司 | Liquid crystal display burning device and burning method |
| US20080297538A1 (en) * | 2007-05-31 | 2008-12-04 | Samsung Electronics Co., Ltd | Apparatus and method for setting a common voltage |
| CN101320541A (en) * | 2007-05-02 | 2008-12-10 | 三星电子株式会社 | Method of preventing flicker, circuit for performing the method, and display apparatus having the circuit |
| CN101577096A (en) * | 2008-05-07 | 2009-11-11 | 群康科技(深圳)有限公司 | Method for adjusting common voltage of liquid crystal display device |
-
2015
- 2015-09-07 CN CN201510562774.8A patent/CN105070264B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050050883A (en) * | 2003-11-26 | 2005-06-01 | 삼성전자주식회사 | Apparatus and method for adjusting common voltage |
| US20070146260A1 (en) * | 2005-12-28 | 2007-06-28 | Eun Kyeong Kang | Method and apparatus for driving liquid crystal display |
| CN101086569A (en) * | 2006-06-09 | 2007-12-12 | 群康科技(深圳)有限公司 | Liquid crystal display burning device and burning method |
| CN101320541A (en) * | 2007-05-02 | 2008-12-10 | 三星电子株式会社 | Method of preventing flicker, circuit for performing the method, and display apparatus having the circuit |
| US20080297538A1 (en) * | 2007-05-31 | 2008-12-04 | Samsung Electronics Co., Ltd | Apparatus and method for setting a common voltage |
| CN101577096A (en) * | 2008-05-07 | 2009-11-11 | 群康科技(深圳)有限公司 | Method for adjusting common voltage of liquid crystal display device |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105607314A (en) * | 2016-03-17 | 2016-05-25 | 浙江新力光电科技有限公司 | Method and device for calibrating flicker degree of liquid crystal display module |
| CN105895038A (en) * | 2016-05-16 | 2016-08-24 | 深圳天珑无线科技有限公司 | Method and device for driving display module set in liquid crystal display screen |
| CN105976782A (en) * | 2016-07-15 | 2016-09-28 | 武汉华星光电技术有限公司 | Liquid crystal display device and driving method thereof |
| CN106297711A (en) * | 2016-09-18 | 2017-01-04 | 深圳市华星光电技术有限公司 | Display module drive circuit, driving method and display module |
| CN106501975A (en) * | 2016-11-11 | 2017-03-15 | 深圳市华星光电技术有限公司 | The method of testing and test device of display panels |
| CN107123398A (en) * | 2017-03-21 | 2017-09-01 | 青岛海信电器股份有限公司 | The VCOM voltage adjusting methods and device of LCDs |
| CN108766326A (en) * | 2018-04-25 | 2018-11-06 | 咸阳彩虹光电科技有限公司 | A kind of method and device obtaining Vcom by adjusting Flicker |
| CN108766326B (en) * | 2018-04-25 | 2021-09-03 | 咸阳彩虹光电科技有限公司 | Method and device for obtaining Vcom by adjusting Flicker |
| CN109147709A (en) * | 2018-10-10 | 2019-01-04 | 武汉精测电子集团股份有限公司 | A kind of multiple spot adjusts the method and device of liquid crystal display panel Flicker |
| CN109147709B (en) * | 2018-10-10 | 2021-05-11 | 武汉精测电子集团股份有限公司 | Method and device for multipoint adjusting Flicker of liquid crystal panel |
| CN112102769A (en) * | 2020-10-28 | 2020-12-18 | 业成科技（成都）有限公司 | Display screen common voltage adjusting method and device, computer equipment and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105070264B (en) | 2017-09-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105070264A (en) | Common voltage adjustment system and method of liquid crystal display panel | |
| CN104517554A (en) | Vcom (voltage of common electrode) adjustment device and method of MIPI (mobile industry processor interface) liquid crystal module on basis of FPGA (field programmable gate array) | |
| CN109884511B (en) | Method and system for testing magnetic sensor chip | |
| US20130096864A1 (en) | Apparatus for calibrating test value of current | |
| CN103366657A (en) | Flicker regulating system | |
| CN105573176A (en) | Robot rapid connection method and robot | |
| CN204288758U (en) | Based on the MIPI liquid crystal module Vcom calibration apparatus of FPGA | |
| CN202522915U (en) | Data acquisition system based on vibration wire type sensor | |
| CN105675168B (en) | Automatic numbering device and method for temperature sensors | |
| CN207397670U (en) | Testing device of display panel | |
| CN103376384A (en) | Mosfet short circuit testing device | |
| CN103616775A (en) | Method for automatically adjusting Auto-Flicker of liquid crystal module on basis of machine vision | |
| CN102510285B (en) | Analog signal acquisition method for data acquisition transmission apparatus | |
| CN112750389A (en) | Testing device | |
| CN101246372A (en) | Automatic temperature control device and method for display terminal | |
| CN205247704U (en) | Polymorphic type sensor teaching experiment system based on STM32 treater | |
| CN203100945U (en) | Non-linear correction device for intelligent pressure sensor | |
| CN104198871A (en) | Electronic device tester and testing method thereof | |
| CN211121345U (en) | Double-temperature compensation system of intelligent environment detection panel sensing equipment | |
| US20130096859A1 (en) | Resistance determining system | |
| CN103759850A (en) | Micro-power consumption intelligent digital thermometer and temperature measurement method | |
| CN104345757B (en) | Electric power detecting and correcting unit and electric power detecting and bearing calibration | |
| CN201917896U (en) | Testing device for digital-analog signal conversion | |
| CN101923821A (en) | Method for detecting backlight currents of liquid crystal display through analog-to-digital conversion inside chip | |
| CN217766678U (en) | High-low temperature test system of touch unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 215301, 1, Longteng Road, Kunshan, Jiangsu, Suzhou Patentee after: InfoVision Optoelectronics(Kunshan)Co.,Ltd. Address before: 215301, 1, Longteng Road, Kunshan, Jiangsu, Suzhou Patentee before: INFOVISION OPTOELECTRONICS (KUNSHAN) Co.,Ltd. |