CN106293592A - A kind of method and system being automatically adjusted waveform biasing - Google Patents
A kind of method and system being automatically adjusted waveform biasing Download PDFInfo
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- CN106293592A CN106293592A CN201610572992.4A CN201610572992A CN106293592A CN 106293592 A CN106293592 A CN 106293592A CN 201610572992 A CN201610572992 A CN 201610572992A CN 106293592 A CN106293592 A CN 106293592A
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- 238000000034 method Methods 0.000 title claims abstract description 47
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 36
- 238000001914 filtration Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims 2
- 238000006243 chemical reaction Methods 0.000 claims 1
- 230000000007 visual effect Effects 0.000 abstract description 14
- 230000008901 benefit Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- 238000003199 nucleic acid amplification method Methods 0.000 description 1
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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 being automatically adjusted waveform biasing, described method includes: S1: obtain and deposit waveform biasing central value V0 of the first liquid crystal display module and difference DELTA X of common electric voltage value Vcom0；S2: obtain common electric voltage value Vcom1 of the second liquid crystal display module；S3: described common electric voltage value Vcom1 is converted to the first digital signal Vcom1 '；S4: described first digital signal Vcom1 ' is processed and produce the first analogue signal；S5: described first digital signal Vcom1 ' and described Δ X is processed and produce the second analogue signal；S6: by described first analogue signal and described second analogue signal after operation amplifier, exports to the second liquid crystal display module of described step S2.The present invention not only achieves common electric voltage value and is automatically adjusted the biasing of waveform, and the different wave offset center under solving different visual angles and the difference problem of common electric voltage value, it is more convenient for test and the use of liquid crystal display module.
Description
Technical field
The present invention relates to field of liquid crystal display, particularly relate to a kind of method and system being automatically adjusted waveform biasing.
Background technology
Owing to liquid crystal indicator has the advantages such as frivolous, energy-conservation, radiationless, it is widely used in TV, PC, flat board
In the electronic equipment such as computer, mobile phone.Wide viewing angle belongs to the mainstream development direction of liquid crystal indicator at present, and people are from different sides
To the screen of viewing liquid crystal display apparatus with wide viewing angle all it can be seen that complete and distortionless picture.But, when relating to, individual is hidden
When private and important information, the use in some cases of the display device of wide viewing angle also can make people feel inconvenience.Therefore remove
Outside the demand of wide viewing angle, under the occasion needing peep-proof, it is possible to by display switching or be adjusted to the aobvious of narrow field-of-view mode
Show that device the most gradually grows up.
Patent CN201410424259.9 discloses the liquid crystal indicator of a kind of view angle switch, and this device is by providing one
Fixed bias voltage is to liquid crystal indicator, it is achieved that the switching of narrow visual angle display pattern to wide viewing angle display pattern.Difference regards
The waveform difference that angle is corresponding, offset center and common electric voltage value also have difference.
Additionally in available liquid crystal display device, the difference between module result in the common electric voltage value that different modules is corresponding
Different.And the module of present stage cannot realize being automatically adjusted the biasing of waveform.Can manually regulate for single module debugging
The biasing of waveform, but for volume production, will result in the biggest burden, and then directly affects product progress and benefit.
Summary of the invention
Present invention is primarily targeted at a kind of method and system being automatically adjusted waveform biasing of proposition, it is intended to solve existing
In liquid crystal indicator, it is impossible to realize being automatically adjusted the biasing problem of waveform.
For achieving the above object, a kind of method being automatically adjusted waveform biasing that the present invention provides, described method includes:
S1: obtain and deposit waveform biasing central value V0 of the first liquid crystal display module and the difference of common electric voltage value Vcom0
Absolute value delta X；
S2: obtain common electric voltage value Vcom1 of the second liquid crystal display module；
S3: described common electric voltage value Vcom1 is converted to the first digital signal Vcom1 '；
S4: described first digital signal Vcom1 ' is processed and produce the first analogue signal；
S5: described first digital signal Vcom1 ' and described Δ X is processed and produce the second analogue signal；
S6: by described first analogue signal and described second analogue signal after operation amplifier, output is to described second
Liquid crystal display module.
Preferably, described step S4 includes:
S41: be adjusted described first digital signal Vcom1 ' processing, and produce the first numeral letter after adjustment processes
Number Vcom1 '；
S42: the first digital signal Vcom1 after described adjustment " is converted to the first analogue signal.
Preferably, described step S5 includes:
S51: judge that whether described waveform biasing central value V0 is more than described common electric voltage value Vcom0；
S52.1: if described waveform biasing central value V0 is more than described common electric voltage value Vcom0, calculates described first numeral
The difference (Vcom1 '-Δ X) of signal Vcom1 ' and described Δ X, and forward step S53 to；
S52.2: if described waveform biasing central value V0 is less than described common electric voltage value Vcom0, calculates described first numeral
Signal Vcom1 ' and described Δ be X's and be worth (Vcom1 '+Δ X), and forwards step S53 to；
S53: be converted to the second analogue signal by described difference or with value.
Preferably, also include before described step S53:
S53.1: to described difference or and value be adjusted process, and produce adjustment process after difference or and value.
Preferably, described adjustment processes and includes Filtering Processing.
Additionally, for achieving the above object, the present invention also proposes a kind of system being automatically adjusted waveform biasing, including depositing
Device, common electric voltage value input module, analog-digital converter, processor, the first digital to analog converter, the second digital to analog converter and computing are put
Big device；
Described depositor is for obtaining and deposit waveform biasing central value V0 and the common electric voltage of the first liquid crystal display module
Absolute value delta X of the difference of value Vcom0；
Described common electric voltage value input module is for obtaining common electric voltage value Vcom1 of the second liquid crystal display module；
Described analog-digital converter is connected with described common electric voltage value input module, and described analog-digital converter is for by described public affairs
Common voltage value Vcom1 is converted to the first digital signal Vcom1 '；
Described processor is connected with described depositor, described analog-digital converter, and described processor is used for processing described first
Digital signal Vcom1 ' and described Δ X；
Described first digital to analog converter is connected with described processor, described first digital to analog converter after processing the
One digital signal produces the first analogue signal；
Described second digital to analog converter is connected with described processor, described second digital to analog converter after processing the
One digital signal and described Δ X produce the second analogue signal；
Described operational amplifier is connected with described first digital to analog converter, described second digital to analog converter, and described computing is put
Big device for will described first analogue signal with described second analogue signal after operation amplifier, export to described second liquid crystal
Display module.
Preferably, described processor includes the first adjusting module, described first adjusting module and described analog-digital converter, institute
State the first digital to analog converter to connect；Described first adjusting module for being adjusted place to described first digital signal Vcom1 '
Reason, and produce the first digital signal Vcom1 after adjustment processes ".
Preferably, described processor includes judge module and computing module, described computing module and described analog-digital converter,
Described depositor and described second digital to analog converter connect；Described judge module and described registration module, described computing module
Connect；Described judge module is used for the size judging more described waveform biasing central value V0 with described common electric voltage value Vcom0,
And generate judged result；Described computing module, for the judged result according to described judge module, calculates described first numeral letter
The difference (Vcom1 '-Δ X) of number Vcom1 ' and described Δ X or and be worth (Vcom1 '+Δ X).
Preferably, described processor also includes the second adjusting module, described second adjusting module and described computing module, institute
State the second digital to analog converter to connect；Described second adjusting module for the difference of described computing module or and value be adjusted place
Reason, and produce the difference after adjustment processes or and value.
Preferably, it is characterised in that described depositor is integrated in described processor.
The method and system being automatically adjusted waveform biasing that the present invention proposes, not only achieve common electric voltage value and are automatically adjusted
The biasing of waveform, and the different wave offset center under solving different visual angles and the difference problem of common electric voltage value, more just
The test of liquid crystal display module and use.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet being automatically adjusted waveform biasing of first embodiment of the invention；
Fig. 2 is the schematic flow sheet of the first analogue signal generation of first embodiment of the invention；
Fig. 3 is the schematic flow sheet of the second analogue signal generation of first embodiment of the invention；
Fig. 4 is the waveform biasing center schematic diagram with common electric voltage of the embodiment of the present invention；
Fig. 5 be the embodiment of the present invention different visual angles under regulate the schematic flow sheet of waveform biasing；
Fig. 6 is the system structure schematic diagram being automatically adjusted waveform biasing of second embodiment of the invention；
Fig. 7 is the structural representation of the processor of second embodiment of the invention.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further referring to the drawings.
Detailed description of the invention
Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Describe referring now to accompanying drawing and realize each embodiment of the present invention.In follow-up description, it is used for representing unit
The suffix of such as " module ", " parts " or " unit " of part is only for the explanation of the beneficially present invention, and itself is the most specific
Meaning.
It should be noted that in this article, term " includes ", " comprising " or its any other variant are intended to non-row
Comprising of his property, so that include that the process of a series of key element, method, article or device not only include those key elements, and
And also include other key elements being not expressly set out, or also include intrinsic for this process, method, article or device
Key element.In the case of there is no more restriction, statement " including ... " key element limited, it is not excluded that including this
The process of key element, method, article or device there is also other identical element.
First embodiment:
As it is shown in figure 1, first embodiment of the invention proposes a kind of method being automatically adjusted waveform biasing, the method includes:
S1: obtain and deposit waveform biasing central value V0 of the first liquid crystal display module and the difference of common electric voltage value Vcom0
Absolute value delta X；
About the explanation at waveform biasing center Yu common electric voltage, refer to shown in Fig. 4.As a example by triangular wave, regard meeting
Under angle requires, waveform biasing center is equal to common electric voltage.At direct current or in the cycle, waveform symmetry or be centrosymmetric
Time, waveform biasing center is equal to common electric voltage, i.e. Δ X=Δ X1=Δ X2=0.If not balancing waveform, under different modules,
Common electric voltage VCOM11 is not equal to common electric voltage VCOM12.Under waveform amplification same case, the offset center meeting of waveform
Move with common electric 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 module
On the module that X just can be used on other same model modules or waveform is identical with amplitude.
S2: obtain common electric voltage value Vcom1 of the second liquid crystal display module；
S3: described common electric voltage value Vcom1 is converted to the first digital signal Vcom1 '；
S4: described first digital signal Vcom1 ' is processed and produce the first analogue signal；
Refer to shown in Fig. 2, step S4 includes in the present embodiment:
S41: be adjusted described first digital signal Vcom1 ' processing, and produce the first numeral letter after adjustment processes
Number Vcom1 "；
S42: the first digital signal Vcom1 after described adjustment " is converted to the first analogue signal.
S5: described first digital signal Vcom1 ' and described Δ X is processed and produce the second analogue signal；
Refer to shown in Fig. 3, step S5 includes in the present embodiment:
S51: judge that whether described waveform biasing central value V0 is more than described common electric voltage value Vcom0；
S52.1: if described waveform biasing central value V0 is more than described common electric voltage value Vcom0, calculates described first numeral
The difference (Vcom1 '-Δ X) of signal Vcom1 ' and described Δ X, and forward step S53 to；
S52.2: if described waveform biasing central value V0 is less than described common electric voltage value Vcom0, calculates described first numeral
Signal Vcom1 ' and described Δ be X's and be worth (Vcom1 '+Δ X), and forwards step S53 to；
S53.1: to described difference or and value be adjusted process, and produce adjustment process after difference or and value.
S53: be converted to the second analogue signal by described difference or with value.
S6: by described first analogue signal and described second analogue signal after operation amplifier, output is to described second
Liquid crystal display module.
In the present embodiment, adjust processing mode and include but not limited to Filtering Processing mode.
In the present embodiment, the second liquid crystal display module can be identical with the first liquid crystal display module model or waveform
Identical with amplitude.
Checking shown in Fig. 5, Fig. 5 is the schematic flow sheet regulating waveform biasing under different visual angles, different visual angles pair the most again
The common electric voltage Vcom value answered is different.It is first determined whether be switched to visual angle 1, if being switched to visual angle 1, then input the public affairs at visual angle 1
Common voltage Vcom, then the method being automatically adjusted waveform biasing according to the present embodiment produces the offset waveform at visual angle 1, and exports
To liquid crystal display module；If being switched to visual angle 2, then input the common electric voltage Vcom at visual angle 2, then automatic according to the present embodiment
The method of regulation waveform biasing produces the offset waveform at visual angle 1, and exports to liquid crystal display module.
Second embodiment:
The present invention further provides a kind of system being automatically adjusted waveform biasing.
With reference to the system structure schematic diagram being automatically adjusted waveform biasing that Fig. 6, Fig. 6 are second embodiment of the invention.This is
System includes: depositor, common electric voltage value input module, analog-digital converter, processor, the first digital to analog converter, the second digital-to-analogue turn
Parallel operation and operational amplifier；
Depositor is for obtaining and deposit waveform biasing central value V0 and the common electric voltage value of the first liquid crystal display module
Absolute value delta X of the difference of Vcom0；
Common electric voltage value input module is for obtaining common electric voltage value Vcom1 of the second liquid crystal display module；
Analog-digital converter is connected with common electric voltage value input module, and analog-digital converter is for turning common electric voltage value Vcom1
It is changed to the first digital signal Vcom1 '；
Processor is connected with depositor, analog-digital converter, processor be used for processing described first digital signal Vcom1 ' with
ΔX；
First digital to analog converter is connected with processor, this first digital to analog converter the first number after being processed by processor
Word signal produces the first analogue signal；
Second digital to analog converter is connected with processor, this second digital to analog converter the first number after being processed by processor
Word signal and Δ X produce the second analogue signal；
Operational amplifier and the first digital to analog converter, the second digital to analog converter connect, and operational amplifier is for by the first mould
Plan signal and the second analogue signal are after operation amplifier, and output is to the second liquid crystal display module.
Refer to shown in Fig. 7, in the present embodiment, processor also includes the first adjusting module, the first adjusting module and mould
Number converter connects, the first digital to analog converter connects；This first adjusting module is for adjusting the first digital signal Vcom1 '
Whole process, and produce the first digital signal Vcom1 after adjustment processes ".First digital to analog converter is used for first after processing
Digital signal produces the first analogue signal.
In the present embodiment, processor also includes judge module and computing module, computing module and analog-digital converter, deposits
Device and the second digital to analog converter connect；Judge module is connected with registration module, computing module；
This judge module is for judging the size comparing waveform biasing central value V0 with common electric voltage value Vcom0, and generates
Judged result；
This computing module, for the judged result according to judge 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 also includes the second adjusting module, the second adjusting module and computing module, the second digital-to-analogue
Transducer connects；This second adjusting module is used for the difference (Vcom1 '-Δ X) to computing module or and value (Vcom1 '+Δ X)
It is adjusted processing, and produces the difference (Vcom1 '-Δ X) after adjustment processes or and value (Vcom1 '+Δ X).
Second digital to analog converter for by process or adjustment process after difference (Vcom1 '-Δ X) or and value (Vcom1 '+
Δ X) produce the second analogue signal.
It should be noted that it will be understood by those skilled in the art that depositor in the present embodiment can be integrated in
In processor, it is possible to for a single module or device.
The method and system being automatically adjusted waveform biasing that the present invention proposes, not only achieve common electric voltage value and are automatically adjusted
The biasing of waveform, and the different wave offset center under solving different visual angles and the difference problem of common electric voltage value, more just
The test of liquid crystal display module and use.
These are only the preferred embodiments of the present invention, not thereby limit the scope of the claims of the present invention, every utilize this
Equivalent structure or equivalence flow process that bright description and accompanying drawing content are made convert, or are directly or indirectly used in other relevant skills
Art field, is the most in like manner included in the scope of patent protection of the present invention.
Claims (10)
1. the method being automatically adjusted waveform biasing, described method includes:
S1: obtain and deposit waveform biasing central value V0 of the first liquid crystal display module and the exhausted of the difference of common electric voltage value Vcom0
To value Δ X；
S2: obtain common electric voltage value Vcom1 of the second liquid crystal display module；
S3: described common electric voltage value Vcom1 is converted to the first digital signal Vcom1 '；
S4: described first digital signal Vcom1 ' is processed and produce the first analogue signal；
S5: described first digital signal Vcom1 ' and described Δ X is processed and produce the second analogue signal；
S6: by described first analogue signal and described second analogue signal after operation amplifier, output is to described second liquid crystal
Display module.
The method being automatically adjusted waveform biasing the most as claimed in claim 1, it is characterised in that described step S4 includes:
S41: be adjusted described first digital signal Vcom1 ' processing, and produce the first digital signal after adjustment processes
Vcom1″；
S42: the first digital signal Vcom1 after described adjustment " is converted to the first analogue signal.
The method being automatically adjusted waveform biasing the most as claimed in claim 1, it is characterised in that described step S5 includes:
S51: judge that whether described waveform biasing central value V0 is more than described common electric voltage value Vcom0；
S52.1: if described waveform biasing central value V0 is more than described common electric voltage value Vcom0, calculate described first digital signal
The difference (Vcom1 '-Δ X) of Vcom1 ' and described Δ X, and forward step S53 to；
S52.2: if described waveform biasing central value V0 is less than described common electric voltage value Vcom0, calculate described first digital signal
Vcom1 ' and described Δ be X's and be worth (Vcom1 '+Δ X), and forwards step S53 to；
S53: described difference or described and value are converted to the second analogue signal.
The method being automatically adjusted waveform biasing the most as claimed in claim 3, it is characterised in that also wrap before described step S53
Include:
S53.1: be adjusted processing to described difference or described and value, and produce the difference after adjustment processes or and value.
5. the method being automatically adjusted waveform biasing as described in claim 2 or 4, it is characterised in that described adjustment processes and includes
Filtering Processing.
6. it is automatically adjusted a system for waveform biasing, including depositor, common electric voltage value input module, analog-digital converter, place
Reason device, the first digital to analog converter, the second digital to analog converter and operational amplifier；
Described depositor is for obtaining and deposit waveform biasing central value V0 and the common electric voltage value of the first liquid crystal display module
Absolute value delta X of the difference of Vcom0；
Described common electric voltage value input module is for obtaining common electric voltage value Vcom1 of the second liquid crystal display module；
Described analog-digital converter is connected with described common electric voltage value input module, and described analog-digital converter is for by described common electrical
Pressure value Vcom1 is converted to the first digital signal Vcom1 '；
Described processor is connected with described depositor, described analog-digital converter, and described processor is used for processing described first numeral
Signal Vcom1 ' and described Δ X；
Described first digital to analog converter is connected with described processor, described first digital to analog converter the first number after processing
Word signal produces the first analogue signal；
Described second digital to analog converter is connected with described processor, described second digital to analog converter the first number after processing
Word signal and described Δ X produce the second analogue signal；
Described operational amplifier is connected with described first digital to analog converter, described second digital to analog converter, described operational amplifier
For by described first analogue signal and described second analogue signal after operation amplifier, output is to described second liquid crystal display
Module.
A kind of system being automatically adjusted waveform biasing, it is characterised in that described processor includes
One adjusting module, described first adjusting module is connected with described analog-digital converter, described first digital to analog converter；Described first adjusts
Mould preparation block for being adjusted process to described first digital signal Vcom1 ', and produces the first digital signal after adjustment processes
Vcom1″。
A kind of system being automatically adjusted waveform biasing, it is characterised in that described processor includes sentencing
Disconnected module and computing module, described computing module and described analog-digital converter, described depositor and described second digital-to-analogue conversion
Device connects；Described judge module is connected with described registration module, described computing module；Described judge module compares institute for judgement
State the size of waveform biasing central value V0 and described common electric voltage value Vcom0, and generate judged result；Described computing module is used for
According to the judged result of described judge module, calculate described first digital signal Vcom1 ' and described Δ X difference (Vcom1 '-
Δ X) or and value (Vcom1 '+Δ X).
A kind of system being automatically adjusted waveform biasing, it is characterised in that described processor also includes
Second adjusting module, described second adjusting module is connected with described computing module, described second digital to analog converter；Described second adjusts
Mould preparation block for the difference of described computing module or and value be adjusted processing, and produce the difference after adjustment processes or and
Value.
10. a kind of system being automatically adjusted waveform biasing as described in claim 6-9 is arbitrary, it is characterised in that described in deposit
Device is integrated in described processor.
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| 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 |
| 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 |
| US20140198275A1 (en) * | 2010-03-29 | 2014-07-17 | Seiko Epson Corporation | Liquid crystal device, driving method thereof, and electronic apparatus |
| 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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|---|---|---|---|---|
| US20020057247A1 (en) * | 2000-11-10 | 2002-05-16 | Lee Chang Hun | LCD for speeding initial bend state, driver and method thereof |
| 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 |
| US20140198275A1 (en) * | 2010-03-29 | 2014-07-17 | Seiko Epson Corporation | Liquid crystal device, driving method thereof, and electronic apparatus |
| 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 |
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