CN106293592B - A kind of method and system automatically adjusting waveform biasing - Google Patents
A kind of method and system automatically adjusting waveform biasing Download PDFInfo
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- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 36
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/147—Digital output to display device ; Cooperation and interconnection of the display device with other functional units using display panels
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Abstract
The invention discloses a kind of method and system for automatically adjusting waveform biasing, which comprises S1: obtaining and deposits the difference DELTA X of the waveform biasing central value V0 and common voltage value Vcom0 of the first liquid crystal display die set；S2: the common voltage value Vcom1 of the second liquid crystal display die set is obtained；S3: the common voltage value Vcom1 is converted into the first digital signal Vcom1 '；S4: the first digital signal Vcom1 ' is handled and generates the first analog signal；S5: the first digital signal Vcom1 ' and the Δ X are handled and generate the second analog signal；S6: it by first analog signal and second analog signal after operation amplifier, exports to the second liquid crystal display die set of the step S2.The present invention not only realizes the biasing of common voltage value automatic adjustment waveform, but also solves the difference problem of the different wave offset center and common voltage value under different perspectives, is more convenient for the test and use of liquid crystal display die set.
Description
Technical field
The present invention relates to field of liquid crystal display more particularly to a kind of method and system for automatically adjusting waveform biasing.
Background technique
Since liquid crystal display device has many advantages, such as frivolous, energy saving, radiationless, it is widely used in TV, PC, plate
In the electronic equipments such as computer, mobile phone.Wide viewing angle belongs to the mainstream development direction of liquid crystal display device at present, and people are from different sides
It can see complete and distortionless picture to the screen of viewing liquid crystal display apparatus with wide viewing angle.But it is personal hidden when being related to
When private and important information, the use of the display device of wide viewing angle in some cases can also make people feel inconvenient.Therefore it removes
Outside the demand of wide viewing angle, under the occasion for needing peep-proof, can display be switched or is adjusted to the aobvious of narrow viewing angle mode
Show that device also has gradually developed.
Patent CN201410424259.9 discloses a kind of liquid crystal display device of view angle switch, and the device is by providing one
Fixed bias voltage realizes the switching of narrow viewing angle display pattern to wide viewing angle display pattern to liquid crystal display device.Difference view
The corresponding waveform in angle is different, and offset center and common voltage value also have difference.
In addition in available liquid crystal display device, the difference between mould group results in the corresponding common voltage value of different mould groups
It is different.And mould group at this stage cannot achieve the biasing of automatic adjustment waveform.Single mould group debugging can be manually adjusted
The biasing of waveform, but for volume production, very big burden will be caused, and then directly affect product progress and benefit.
Summary of the invention
It is a primary object of the present invention to propose a kind of method and system for automatically adjusting waveform biasing, it is intended to solve existing
In liquid crystal display device, the biasing problem of automatic adjustment waveform cannot achieve.
To achieve the above object, a kind of method automatically adjusting waveform biasing provided by the invention, which comprises
S1: obtaining and deposits the difference of the waveform biasing central value V0 and common voltage value Vcom0 of the first liquid crystal display die set
Absolute value delta X；
S2: the common voltage value Vcom1 of the second liquid crystal display die set is obtained；
S3: the common voltage value Vcom1 is converted into the first digital signal Vcom1 '；
S4: the first digital signal Vcom1 ' is handled and generates the first analog signal；
S5: the first digital signal Vcom1 ' and the Δ X are handled and generate the second analog signal；
S6: it by first analog signal and second analog signal after operation amplifier, exports to described second
Liquid crystal display die set.
Preferably, the step S4 includes:
S41: being adjusted processing to the first digital signal Vcom1 ', and generate adjustment treated first number letter
Number Vcom1 '；
S42: the first digital signal Vcom1 " adjusted is converted into the first analog signal.
Preferably, the step S5 includes:
S51: judge whether the waveform biasing central value V0 is greater than the common voltage value Vcom0；
S52.1: if the waveform biasing central value V0 is greater than the common voltage value Vcom0, first number is calculated
The difference (Vcom1 '-Δ X) of signal Vcom1 ' and the Δ X, and go to step S53；
S52.2: if the waveform biasing central value V0 is less than the common voltage value Vcom0, first number is calculated
Signal Vcom1 ' and the Δ X's and are worth (Vcom1 '+Δ X), and go to step S53；
S53: the second analog signal is converted to by the difference or with value.
Preferably, before the step S53 further include:
S53.1: to the difference or and value be adjusted processing, and generate adjustment treated difference or and value.
Preferably, the adjustment processing includes filtering processing.
In addition, to achieve the above object, the present invention also proposes a kind of system for automatically adjusting waveform biasing, including deposit
Device, common voltage value input module, analog-digital converter, processor, the first digital analog converter, the second digital analog converter and operation are put
Big device；
The register is used to obtain and deposit the waveform biasing central value V0 and common voltage of the first liquid crystal display die set
The absolute value of the difference Δ X of value Vcom0；
The common voltage value input module is used to obtain the common voltage value Vcom1 of the second liquid crystal display die set；
The analog-digital converter is connect with the common voltage value input module, and the analog-digital converter is used for the public affairs
Common voltage value Vcom1 is converted to the first digital signal Vcom1 '；
The processor is connect with the register, the analog-digital converter, and the processor is for handling described first
Digital signal Vcom1 ' and Δ the X；
First digital analog converter is connected to the processor, and first digital analog converter is used for will treated the
One digital signal generates the first analog signal；
Second digital analog converter is connected to the processor, and second digital analog converter is used for will treated the
One digital signal and the Δ X generate the second analog signal；
The operational amplifier is connect with first digital analog converter, second digital analog converter, and the operation is put
Big device is used to export by first analog signal and second analog signal after operation amplifier to second liquid crystal
Display module.
Preferably, the processor includes the first adjustment module, the first adjustment module and the analog-digital converter, institute
State the connection of the first digital analog converter；The first adjustment module is for being adjusted place to the first digital signal Vcom1 '
Reason, and generate adjustment treated the first digital signal Vcom1 ".
Preferably, the processor includes judgment module and computing module, the computing module and the analog-digital converter,
The register and second digital analog converter connection；The judgment module and the registration module, the computing module
Connection；The judgment module is used to judge the size of the waveform biasing central value V0 Yu the common voltage value Vcom0,
And generate judging result；The computing module is used for the judging result according to the judgment module, calculates the first number letter
The difference (Vcom1 '-Δ X) of number Vcom1 ' and Δ X and is worth (Vcom1 '+Δ X).
Preferably, the processor further includes second adjustment module, the second adjustment module and the computing module, institute
State the connection of the second digital analog converter；The second adjustment module be used for the difference of the computing module or and value be adjusted place
Reason, and generate adjustment treated difference or and value.
Preferably, which is characterized in that the register is integrated in the processor.
The method and system of automatic adjustment waveform biasing proposed by the present invention, not only realize the automatic adjustment of common voltage value
The biasing of waveform, and the difference problem of the different wave offset center and common voltage value under different perspectives is solved, more just
Liquid crystal display die set test and use.
Detailed description of the invention
Fig. 1 is the flow diagram of the automatic adjustment waveform biasing of first embodiment of the invention；
Fig. 2 is the flow diagram that the first analog signal of first embodiment of the invention generates；
Fig. 3 is the flow diagram that the second analog signal of first embodiment of the invention generates；
Fig. 4 is the waveform biasing center of the embodiment of the present invention and the schematic diagram of common voltage；
Fig. 5 be the embodiment of the present invention different perspectives under adjust waveform biasing flow diagram；
Fig. 6 is the system structure diagram of the automatic adjustment waveform biasing of second embodiment of the invention；
Fig. 7 is the structural schematic diagram of the processor of second embodiment of the invention.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The each embodiment of the present invention is realized in description with reference to the drawings.In subsequent description, using for indicating member
The suffix of such as " module ", " component " or " unit " of part is only for being conducive to explanation of the invention, and there is no specific for itself
Meaning.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or the device that include a series of elements not only include those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or device institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including being somebody's turn to do
There is also other identical elements in the process, method of element, article or device.
First embodiment:
As shown in Figure 1, first embodiment of the invention proposes a kind of method for automatically adjusting waveform biasing, this method comprises:
S1: obtaining and deposits the difference of the waveform biasing central value V0 and common voltage value Vcom0 of the first liquid crystal display die set
Absolute value delta X；
About the explanation at waveform biasing center and common voltage, can refer to shown in Fig. 4.By taking triangular wave as an example, regarded meeting
Under angle requires, waveform biasing center is equal to common voltage.In direct current or a cycle, waveform symmetry or it is centrosymmetric
When, waveform biasing center is equal to common voltage, i.e. Δ X=Δ X1=Δ X2=0.If not balancing waveform, under different mould groups,
Common voltage VCOM11 is not equal to common voltage VCOM12.Under waveform amplification factor same case, the offset center meeting of waveform
It is mobile with common voltage VCOM.That is Δ X is a definite value, i.e. Δ X=Δ X1=Δ X2.So determining the Δ of one group of mould group
X can at other in model mould group or on waveform and the identical mould group of amplitude.
S2: the common voltage value Vcom1 of the second liquid crystal display die set is obtained；
S3: the common voltage value Vcom1 is converted into the first digital signal Vcom1 '；
S4: the first digital signal Vcom1 ' is handled and generates the first analog signal；
It please refers to shown in Fig. 2, step S4 includes: in the present embodiment
S41: being adjusted processing to the first digital signal Vcom1 ', and generate adjustment treated first number letter
Number Vcom1 "；
S42: the first digital signal Vcom1 " adjusted is converted into the first analog signal.
S5: the first digital signal Vcom1 ' and the Δ X are handled and generate the second analog signal；
It please refers to shown in Fig. 3, step S5 includes: in the present embodiment
S51: judge whether the waveform biasing central value V0 is greater than the common voltage value Vcom0；
S52.1: if the waveform biasing central value V0 is greater than the common voltage value Vcom0, first number is calculated
The difference (Vcom1 '-Δ X) of signal Vcom1 ' and the Δ X, and go to step S53；
S52.2: if the waveform biasing central value V0 is less than the common voltage value Vcom0, first number is calculated
Signal Vcom1 ' and the Δ X's and are worth (Vcom1 '+Δ X), and go to step S53；
S53.1: to the difference or and value be adjusted processing, and generate adjustment treated difference or and value.
S53: the second analog signal is converted to by the difference or with value.
S6: it by first analog signal and second analog signal after operation amplifier, exports to described second
Liquid crystal display die set.
In the present embodiment, adjustment processing mode includes but is not limited to filtering processing mode.
In the present embodiment, the second liquid crystal display die set can be the identical or waveform with the first liquid crystal display die set model
It is identical with amplitude.
It is please checked shown in Fig. 5 again, Fig. 5 is the flow diagram that waveform biasing is adjusted under different perspectives, different visual angles pair
The common voltage Vcom value answered is different.It is first determined whether it is switched to visual angle 1, and if being switched to visual angle 1, the public affairs of input viewing angle 1
Then common voltage Vcom generates the offset waveform at visual angle 1 according to the method for the automatic adjustment waveform biasing of the present embodiment, and exports
To liquid crystal display die set；If being switched to visual angle 2, the common voltage Vcom of input viewing angle 2, then according to the automatic of the present embodiment
The method for adjusting waveform biasing generates the offset waveform at visual angle 2, and exports to liquid crystal display die set.
Second embodiment:
The present invention further provides a kind of systems for automatically adjusting waveform biasing.
Referring to the system structure diagram for the automatic adjustment waveform biasing that Fig. 6, Fig. 6 are second embodiment of the invention.This is
System includes: register, common voltage value input module, analog-digital converter, processor, the first digital analog converter, the second digital-to-analogue turn
Parallel operation and operational amplifier；
Register is used to obtain and deposit the waveform biasing central value V0 and common voltage value of the first liquid crystal display die set
The absolute value of the difference Δ X of Vcom0；
Common voltage value input module is used to obtain the common voltage value Vcom1 of the second liquid crystal display die set；
Analog-digital converter is connect with common voltage value input module, and analog-digital converter is used to turn common voltage value Vcom1
It is changed to the first digital signal Vcom1 '；
Processor is connect with register, analog-digital converter, processor for handle the first digital signal Vcom1 ' with
ΔX；
First digital analog converter is connect with processor, first digital analog converter be used for by processor treated first number
Word signal generates the first analog signal；
Second digital analog converter is connect with processor, second digital analog converter be used for by processor treated first number
Word signal and Δ X generate the second analog signal；
Operational amplifier is connect with the first digital analog converter, the second digital analog converter, and operational amplifier is used for the first mould
Quasi- signal and the second analog signal export after operation amplifier to the second liquid crystal display die set.
It please refers to shown in Fig. 7, in the present embodiment, processor further includes the first adjustment module, the first adjustment module and mould
Number converter connection, the connection of the first digital analog converter；The first adjustment module is for adjusting the first digital signal Vcom1 '
Whole processing, and generate adjustment treated the first digital signal Vcom1 ".First digital analog converter is used for will treated first
Digital signal generates the first analog signal.
In the present embodiment, processor further includes judgment module and computing module, and computing module and analog-digital converter are deposited
Device and the connection of the second digital analog converter；Judgment module is connect with registration module, computing module；
The judgment module is used to judge to compare the size of waveform biasing central value V0 Yu common voltage value Vcom0, and generates
Judging result；
The computing module is used for the judging result according to judgment module, calculates the first digital signal Vcom1 ' and absolute value delta
The difference (Vcom1 '-Δ X) of X or and value (Vcom1 '+Δ X).
In the present embodiment, processor further includes second adjustment module, second adjustment module and computing module, the second digital-to-analogue
Converter connection；The second adjustment module is used for difference (Vcom1 '-Δ X) or and value (Vcom1 '+Δ X) to computing module
It is adjusted processing, and generates adjustment treated difference (Vcom1 '-Δ X) or and value (Vcom1 '+Δ X).
Second digital analog converter for will handle or adjust treated difference (Vcom1 '-Δ X) or be worth (Vcom1 '
+ Δ X) generate the second analog signal.
It should be noted that it will be understood by those skilled in the art that register in the present embodiment can be integrated in
It can also be an individual module or device in processor.
The method and system of automatic adjustment waveform biasing proposed by the present invention, not only realize the automatic adjustment of common voltage value
The biasing of waveform, and the difference problem of the different wave offset center and common voltage value under different perspectives is solved, more just
Liquid crystal display die set test and use.
The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of method for automatically adjusting waveform biasing, which comprises
S1: obtaining and deposits the exhausted of the waveform biasing central value V0 of the first liquid crystal display die set and the difference of common voltage value Vcom0
To value Δ X；
S2: the common voltage value Vcom1 of the second liquid crystal display die set is obtained；
S3: the common voltage value Vcom1 is converted into the first digital signal Vcom1 '；
S4: the first digital signal Vcom1 ' is handled and generates the first analog signal；
S5: X's and (Vcom1 '+Δ X) or difference (Vcom1 '-Δ X) be worth to the first digital signal Vcom1 ' and the Δ
It is handled and generates the second analog signal；
S6: it by first analog signal and second analog signal after operation amplifier, exports to second liquid crystal
Display module.
2. the method for automatic adjustment waveform biasing as described in claim 1, which is characterized in that the step S4 includes:
S41: being adjusted processing to the first digital signal Vcom1 ', and generates adjustment treated the first digital signal
Vcom1″；
S42: the first digital signal Vcom1 " adjusted is converted into the first analog signal.
3. the method for automatic adjustment waveform biasing as described in claim 1, which is characterized in that the step S5 includes:
S51: judge whether the waveform biasing central value V0 is greater than the common voltage value Vcom0；
S52.1: if the waveform biasing central value V0 is greater than the common voltage value Vcom0, first digital signal is calculated
The difference (Vcom1 '-Δ X) of Vcom1 ' and the Δ X, and go to step S53；
S52.2: if the waveform biasing central value V0 is less than the common voltage value Vcom0, first digital signal is calculated
The described and value (Vcom1 '+Δ X) of the Vcom1 ' and Δ X, and go to step S53；
S53: the difference or described and value are converted into the second analog signal.
4. the method for automatic adjustment waveform biasing as claimed in claim 3, which is characterized in that also wrapped before the step S53
It includes:
S53.1: being adjusted processing to the difference or described and value, and generates adjustment treated difference or and value.
5. the method for automatic adjustment waveform biasing as claimed in claim 2 or 4, which is characterized in that the adjustment, which is handled, includes
Filtering processing.
6. a kind of system for automatically adjusting waveform biasing, including register, common voltage value input module, analog-digital converter, place
Manage device, the first digital analog converter, the second digital analog converter and operational amplifier；
The register is used to obtain and deposit the waveform biasing central value V0 and common voltage value of the first liquid crystal display die set
The absolute value of the difference Δ X of Vcom0；
The common voltage value input module is used to obtain the common voltage value Vcom1 of the second liquid crystal display die set；
The analog-digital converter is connect with the common voltage value input module, and the analog-digital converter is used for the common electrical
Pressure value Vcom1 is converted to the first digital signal Vcom1 '；
The processor is connect with the register, the analog-digital converter, and the processor is for handling first number
Signal Vcom1 ' and Δ the X；
First digital analog converter is connected to the processor, first digital analog converter be used for will treated first number
Word signal Vcom1 " generates the first analog signal；
Second digital analog converter is connected to the processor, and second digital analog converter is used for will treated described the
The difference (Vcom1 '-Δ X) of the one digital signal Vcom1 ' and Δ X is converted to the second simulation and believes with value (Vcom1 '+Δ X)
Number；
The operational amplifier is connect with first digital analog converter, second digital analog converter, the operational amplifier
For after operation amplifier, exporting first analog signal and second analog signal to second liquid crystal display
Mould group.
7. a kind of system for automatically adjusting waveform biasing as claimed in claim 6, which is characterized in that the processor includes the
One adjustment module, the first adjustment module are connect with the analog-digital converter, first digital analog converter；Described first adjusts
Mould preparation block is used to be adjusted processing to the first digital signal Vcom1 ', and treated described in generating the first digital signal
Vcom1″。
8. a kind of system for automatically adjusting waveform biasing as claimed in claim 6, which is characterized in that the processor includes sentencing
Disconnected module and computing module, the computing module and the analog-digital converter, the register and second digital-to-analogue conversion
Device connection；The judgment module is connect with the registration module, the computing module；The judgment module compares institute for judging
The size of waveform biasing central value V0 Yu the common voltage value Vcom0 are stated, and generates judging result；The computing module is used for
According to the judging result of the judgment module, the difference of the first digital signal Vcom1 ' and the Δ X are calculated
(Vcom1 '-Δ X) or described and value (Vcom1 '+Δ X).
9. a kind of system for automatically adjusting waveform biasing as claimed in claim 8, which is characterized in that the processor further includes
Second adjustment module, the second adjustment module are connect with the computing module, second digital analog converter；Described second adjusts
Mould preparation block is used to be adjusted the difference (Vcom1 '-Δ X) of the computing module or described and value (Vcom1 '+Δ X)
Processing, and generate adjustment treated difference (Vcom1 '-Δ X) ' or and value (Vcom1 '+Δ X) ' be used to generate second mould
Quasi- signal.
10. a kind of system of automatic adjustment waveform biasing as described in claim 6-9 is any, which is characterized in that the deposit
Device is integrated in the processor.
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| CN102842295A (en) * | 2012-08-15 | 2012-12-26 | 京东方科技集团股份有限公司 | Common electrode Vcom voltage regulation method and device |
| CN102854670A (en) * | 2012-06-01 | 2013-01-02 | 京东方科技集团股份有限公司 | Liquid crystal display viewing angle controlling method, liquid crystal display panel and liquid crystal display |
| CN104155808A (en) * | 2014-08-26 | 2014-11-19 | 昆山龙腾光电有限公司 | Liquid crystal display device capable of achieving visual angle switching |
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| JP4895450B2 (en) * | 2000-11-10 | 2012-03-14 | 三星電子株式会社 | Liquid crystal display device and driving device and method thereof |
| US9329443B2 (en) * | 2010-03-29 | 2016-05-03 | Seiko Epson Corporation | Liquid crystal display device having first and second dielectric films with different thicknesses |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201122218Y (en) * | 2007-12-11 | 2008-09-24 | 河南南方辉煌图像信息技术有限公司 | VCOM voltage circuit for automatic real-time regulating LCD |
| CN102854670A (en) * | 2012-06-01 | 2013-01-02 | 京东方科技集团股份有限公司 | Liquid crystal display viewing angle controlling method, liquid crystal display panel and liquid crystal display |
| CN102842295A (en) * | 2012-08-15 | 2012-12-26 | 京东方科技集团股份有限公司 | Common electrode Vcom voltage regulation method and device |
| CN104155808A (en) * | 2014-08-26 | 2014-11-19 | 昆山龙腾光电有限公司 | Liquid crystal display device capable of achieving visual angle switching |
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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. |