CN108091313A - Driving voltage generation method, source electrode drive circuit, array substrate and display device - Google Patents
Driving voltage generation method, source electrode drive circuit, array substrate and display device Download PDFInfo
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- CN108091313A CN108091313A CN201810044962.5A CN201810044962A CN108091313A CN 108091313 A CN108091313 A CN 108091313A CN 201810044962 A CN201810044962 A CN 201810044962A CN 108091313 A CN108091313 A CN 108091313A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3696—Generation of voltages supplied to electrode drivers
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2230/00—Details of flat display driving waveforms
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- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
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- Theoretical Computer Science (AREA)
- Liquid Crystal Display Device Control (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention discloses a kind of driving voltage generation method, including：According to the characteristic of drive waveforms, drive waveforms are divided at least 2 groups of sub- drive waveforms；By the endpoint of the sub- drive waveforms, it is determined as reference voltage；According to the characteristic of sub- drive waveforms, reference voltage requirement and fixed reference voltage, other reference voltages are determined.
Description
Technical field
The present invention relates to display technology fields, particularly relate to a kind of driving voltage generation method, source electrode drive circuit, array
Substrate and display device.
Background technology
Continuous development and maturation with display technology, particularly liquid crystal display device, technology has developed more
It is ripe.The driving of liquid crystal display device includes raster data model and source drive.Wherein, generally included binary system in source drive
Code data-signal selects corresponding reference voltage (also referred to as gamma reference voltage) to pass through series connection after D/A converting circuit is handled
Electric resistance partial pressure generates corresponding gray scale voltage.
But the present inventor has found that the prior art has at least the following problems when realizing the present invention：
In the prior art, the quantity of reference voltage is inputted after predefining, and so just must in the driving circuit
It need be connected up according to the quantity of the reference voltage of input.And reference voltage quantity is more, the gray scale voltage of generation is finer,
But cost is also higher.
The content of the invention
In view of this, the first purpose of the embodiment of the present invention is, proposes a kind of driving voltage generation method, source drive
Circuit, array substrate and display device can simplify wiring.
Based on above-mentioned purpose, the first aspect of the embodiment of the present invention provides a kind of driving voltage generation method, bag
It includes：
According to the characteristic of drive waveforms, drive waveforms are divided at least 2 groups of sub- drive waveforms；
By the endpoint of the sub- drive waveforms, it is determined as reference voltage；
According to the characteristic of sub- drive waveforms, reference voltage requirement and fixed reference voltage, other ginsengs are determined
Examine voltage.
Optionally, the drive waveforms are divided into 3 groups of sub- drive waveforms, specifically include：High voltage cross-talk drive waveforms, in
Voltage cross-talk drive waveforms, low-voltage cross-talk drive waveforms.
Optionally, by the endpoint of the sub- drive waveforms, it is determined as reference voltage, including：
By the endpoint of the high voltage cross-talk drive waveforms, middle voltage cross-talk drive waveforms and low-voltage cross-talk drive waveforms
It is determined as reference voltage.
Optionally, according to the characteristic of sub- drive waveforms, reference voltage requirement and fixed reference voltage, determine
Other reference voltages, including：
According to the high voltage cross-talk drive waveforms, middle voltage cross-talk drive waveforms and low-voltage cross-talk drive waveforms each
Endpoint, determine the slopes of each sub- drive waveforms of output；
According to the slope of each sub- drive waveforms, other reference voltages are determined using interpolation value method.
Optionally, the reference voltage requirement is 18；
The endpoint of the high voltage cross-talk drive waveforms is confirmed as the first reference voltage, the 4th reference voltage, the 15th
Reference voltage and the 18th reference voltage；
The endpoint of the middle voltage cross-talk drive waveforms is confirmed as the 4th reference voltage, the 7th reference voltage, the 12nd
Reference voltage and the 15th reference voltage；
The endpoint of low-voltage cross-talk drive waveforms is confirmed as the 7th reference voltage, the 9th reference voltage, the tenth with reference to electricity
Pressure and the 12nd reference voltage.
Optionally, the reference voltage requirement is 10,14,18 or 22.
The second aspect of the embodiment of the present invention provides a kind of source electrode drive circuit, using such as going any one of them
Driving voltage generation method determines reference voltage.
3rd aspect of the embodiment of the present invention, provides a kind of array substrate, including foregoing source drive electricity
Road.
4th aspect of the embodiment of the present invention, provides a kind of display device, including foregoing array substrate.
From the above it can be seen that driving voltage generation method provided in an embodiment of the present invention, source electrode drive circuit, battle array
Row substrate and display device divide different sub- drive waveforms according to the characteristic of drive waveforms, and and then according to sub- drive waveforms
Part reference voltage is determined, finally by the characteristic of sub- drive waveforms, reference voltage requirement and fixed reference voltage
Source driving chip is output to so that it can according to the characteristic of sub- drive waveforms, reference voltage requirement and fixed
Reference voltage determines other reference voltages, so as to obtain whole reference voltages；In this way, the ginseng inputted in source driving chip
The quantity for examining voltage greatly reduces compared with the quantity of the reference voltage of required input in the prior art, so as to reduce circuit cloth
Line saves cost.
Description of the drawings
Fig. 1 is the flow diagram of one embodiment of driving voltage generation method provided by the invention；
Fig. 2 is the flow diagram of another embodiment of driving voltage generation method provided by the invention；
Fig. 3 is liquid crystal drive waveform diagram in driving voltage generation method embodiment provided by the invention.
Specific embodiment
Understand to make the object, technical solutions and advantages of the present invention clearer, below in conjunction with specific embodiment, and reference
Attached drawing, the present invention is described in more detail.
It should be noted that all statements for using " first " and " second " are for differentiation two in the embodiment of the present invention
The non-equal entity of a same names or non-equal parameter, it is seen that " first " " second " should not only for the convenience of statement
The restriction to the embodiment of the present invention is interpreted as, following embodiment no longer illustrates this one by one.
The first aspect of the embodiment of the present invention, it is proposed that a kind of one embodiment of driving voltage generation method, it can
Simplify wiring.As shown in Figure 1, the flow signal of one embodiment for driving voltage generation method provided by the invention
Figure.
The driving voltage generation method, including：
Step 101：According to the characteristic of drive waveforms, drive waveforms are divided at least 2 groups of sub- drive waveforms；The driving ripple
Shape typically refers to the gray scale voltage curve drawn based on the electro-optic properties of liquid crystal.
Here, drive waveforms are divided into sub- drive waveforms, can according to possessed by the different sections of drive waveforms curve
Characteristic is divided.For example, a certain section of drive waveforms substantially meet the characteristic of exponential curve, then it can be by such one section driving
Waveform is divided into 1 sub- drive waveforms (can be called A), and since the drive waveforms of liquid crystal have the characteristic of almost symmetry, because
This can will also serve as son with the foregoing corresponding another section symmetrical one section drive waveforms of sub- drive waveforms come that marked off
Drive waveforms (can be called B), in this way, this two cross-talks drive waveforms can be divided into 1 group of sub- drive waveforms, (i.e. A and B are one
Group).Similarly, if a certain section of drive waveforms substantially meet linear characteristic, then this section of drive waveforms can be divided into 1 son and driven
Dynamic waveform (C can be called), likewise, sub- drive waveforms (D can be called) are also divided into its symmetrical another section, in this way,
This two cross-talks drive waveforms can be divided into 1 group of sub- drive waveforms (i.e. C be one group with D).
Step 102：By the endpoint of the sub- drive waveforms, it is determined as reference voltage；
Here it is possible to the endpoint of the sub- drive waveforms marked off is directly determined as reference voltage；Optionally, in order to
Ensure that the multiple reference voltages finally obtained meet more accurate requirement, definite endpoint can suitably be corrected.
Step 103：According to the characteristic of sub- drive waveforms, reference voltage requirement and fixed reference voltage, really
Other fixed reference voltages；Here, the characteristic, reference voltage requirement and fixed reference electricity of sub- drive waveforms are being obtained
After pressure, by the characteristic, reference voltage requirement and fixed reference voltage output of the sub- drive waveforms to source electrode
Driving chip (Source Driver IC), so as to by the calculating of source driving chip, determine other reference voltages.
It is foregoing it is stated that the division of sub- drive waveforms is divided according to its curve characteristic or linear characteristic.Due to
Fixed reference voltage is the endpoint of every cross-talk drive waveforms, that is to say, that fixed reference voltage quantity is insufficient.
Therefore, the characteristic, reference voltage requirement and fixed reference voltage of sub- drive waveforms are exported here so that source electrode drives
Dynamic chip (Source Driver IC) can be according to reference voltage requirement and fixed reference voltage, it is known that at which
There is lacked reference voltage between a little fixed reference voltages, and and then these are lacked according to the characteristic of sub- drive waveforms
The reference voltage of mistake is calculated.
From above-described embodiment as can be seen that driving voltage generation method provided in an embodiment of the present invention, according to drive waveforms
Characteristic divide different sub- drive waveforms, and and then determine part reference voltage according to sub- drive waveforms, finally by sub- driving
Characteristic, reference voltage requirement and the fixed reference voltage output of waveform are to source driving chip so that it can root
Other reference voltages are determined according to the characteristic of sub- drive waveforms, reference voltage requirement and fixed reference voltage, so as to
Obtain whole reference voltages；In this way, the quantity of the reference voltage inputted in source driving chip is more required
The quantity for the reference voltage to be inputted greatly reduces, and so as to reduce wiring, saves cost.
The embodiment of the present invention also proposed another embodiment of the driving voltage generation method, can simplify circuit cloth
Line.As shown in Fig. 2, the flow diagram of another embodiment for driving voltage generation method provided by the invention.
The driving voltage generation method, including：
Step 201：It, will according to the drive waveforms characteristic (that is, liquid crystal is to transfer characteristic of voltage, as shown in Figure 3) of liquid crystal
Drive waveforms are divided into 3 groups of sub- drive waveforms, as shown in figure 3, specifically including：(i.e. white point voltage arrives high voltage cross-talk drive waveforms
The starting point of gray scale voltage change dramatically section, including GMA15-18 sections and GMA1-4 sections), middle voltage cross-talk drive waveforms (i.e. grayscale
The origin-to-destination of voltage change dramatically section, including GMA12-15 sections and GMA4-7 sections), low-voltage cross-talk drive waveforms it is (i.e. grey
The terminal of rank voltage change dramatically section is to stain voltage, including GMA10-12 sections and GMA7-9 sections).
Step 202：The high voltage cross-talk drive waveforms, middle voltage cross-talk drive waveforms and low-voltage cross-talk are driven into ripple
The endpoint of shape is determined as reference voltage.
Optionally, the reference voltage requirement is 18；
The endpoint of the high voltage cross-talk drive waveforms is confirmed as the first reference voltage GMA1, the 4th reference voltage
GMA4, the 15th reference voltage GMA15 and the 18th reference voltage GMA18；
The endpoint of the middle voltage cross-talk drive waveforms is confirmed as the 4th reference voltage GMA4, the 7th reference voltage
GMA7, the 12nd reference voltage GMA12 and the 15th reference voltage GMA15；
The endpoint of low-voltage cross-talk drive waveforms is confirmed as the 7th reference voltage GMA7, the 9th reference voltage GMA9,
Ten reference voltage GMA10 and the 12nd reference voltage GMA12.
Step 203：It is driven according to the high voltage cross-talk drive waveforms, middle voltage cross-talk drive waveforms and low-voltage cross-talk
The respective endpoint of waveform determines the slope of each sub- drive waveforms of output；
The slope of each sub- drive waveforms is according to the high voltage cross-talk drive waveforms, middle voltage cross-talk driving ripple
Determined by shape and the respective endpoint of low-voltage cross-talk drive waveforms；Specifically, with reference to figure 3, wherein, high voltage cross-talk driving ripple
The slope of shape, which includes GMA15-18 sections of slope 6 and GMA1-4 sections of slope 1, the slope of middle voltage cross-talk drive waveforms, to be included
The slope 2 of GMA12-15 sections of slope 5 and GMA4-7 section, the slopes of low-voltage cross-talk drive waveforms include GMA10-12 sections oblique
Rate 4 and GMA7-9 sections of slope 3.Here, by the way that each sub- drive waveforms are fitted to straight line so that it is follow-up calculate it is easier,
Fast.
Step 204：According to the slope of each sub- drive waveforms, other reference voltages are determined using interpolation value method；I.e. second ginseng
Examine voltage GMA2, the 3rd reference voltage GMA3, the 5th reference voltage GMA5, the 6th reference voltage GMA6, the 8th reference voltage
GMA8, the 11st reference voltage GMA11, the 13rd reference voltage GMA13, the 14th reference voltage GMA14, the 16th are with reference to electricity
Press GMA16, the 17th reference voltage GMA17.
From above-described embodiment as can be seen that driving voltage generation method provided in an embodiment of the present invention, by by liquid crystal
Drive characteristic curve is reduced to 3 sections, and, follow-up source driving chip (Source. by each section of endpoint as the reference voltage
Driver IC) further according to slope remaining reference voltage is calculated using interpolation value method, so as to obtain all referring to voltage；This
Sample, 18 reference voltages that can be given by original outside need are changed to only need 8 reference voltage sources, so as to excellent
Change the voltage source quantity of input, reduce wiring, save cost.
It, can be by Source driver as can be seen that designed by the foregoing method for automatically generating driving voltage
The part reference voltage source of IC calculates other reference voltages again after Source driver IC are inputted, completion to be calculated
The DAC (D/A converter module) for being re-fed into the output OP (operational amplifying module) of source driver IC afterwards carries out voltage school
Just.Above-mentioned reference voltage source be inside source driver IC one by the stable voltage calculated, can be through
It is adjusted by external setting-up.
Optionally, according to different needs, the reference voltage requirement can also be 10,14 or 22.Work as reference
When voltage requirement is not 18 in previous embodiment, it can similarly be obtained according to the method theory in previous embodiment
Similar driving voltage generation method, details are not described herein.
It should also be noted that, in previous embodiment when being divided to drive waveforms, the side symmetrically divided is employed
Formula, it will be understood that in order to make driving voltage more accurate, finer stroke can also be carried out according to the characteristic of every section of waveform
Divide and be fitted, therefore, protection scope of the present invention should not be only limited on previous embodiment.
The second aspect of the embodiment of the present invention, it is proposed that a kind of one embodiment of source electrode drive circuit can simplify
Wiring.
The source electrode drive circuit is determined using any embodiment of foregoing driving voltage generation method with reference to electricity
Pressure.
From the above it can be seen that source electrode drive circuit provided in an embodiment of the present invention, according to the characteristic of drive waveforms
Divide different sub- drive waveforms, and and then determine part reference voltage according to sub- drive waveforms, finally by sub- drive waveforms
Characteristic, reference voltage requirement and fixed reference voltage output are to source driving chip so that it can according to sub- drive
Characteristic, reference voltage requirement and the fixed reference voltage of dynamic waveform determine other reference voltages, complete so as to obtain
The reference voltage in portion；In this way, the quantity of the reference voltage inputted in source driving chip more required input
The quantity of reference voltage greatly reduce, so as to reduce wiring, save cost.
3rd aspect of the embodiment of the present invention, it is proposed that a kind of one embodiment of array substrate can simplify circuit
Wiring.
The array substrate, including foregoing source electrode drive circuit.
From the above it can be seen that array substrate provided in an embodiment of the present invention, divides according to the characteristic of drive waveforms
Different sub- drive waveforms, and and then determine part reference voltage according to sub- drive waveforms, finally by the characteristic of sub- drive waveforms,
Reference voltage requirement and fixed reference voltage output are to source driving chip so that it can according to sub- drive waveforms
Characteristic, reference voltage requirement and fixed reference voltage determine other reference voltages, so as to obtain whole ginsengs
Examine voltage；In this way, reference of the quantity of the reference voltage inputted in source driving chip compared with required input in the prior art
The quantity of voltage greatly reduces, and so as to reduce wiring, saves cost.
4th aspect of the embodiment of the present invention, it is proposed that a kind of one embodiment of display device can simplify circuit
Wiring.
The display device, including foregoing array substrate.
It should be noted that the display device in the present embodiment can be：Electronic Paper, mobile phone, tablet computer, television set,
Any product or component with display function such as laptop, Digital Frame, navigator.
From the above it can be seen that display device provided in an embodiment of the present invention, divides according to the characteristic of drive waveforms
Different sub- drive waveforms, and and then determine part reference voltage according to sub- drive waveforms, finally by the characteristic of sub- drive waveforms,
Reference voltage requirement and fixed reference voltage output are to source driving chip so that it can according to sub- drive waveforms
Characteristic, reference voltage requirement and fixed reference voltage determine other reference voltages, so as to obtain whole ginsengs
Examine voltage；In this way, reference of the quantity of the reference voltage inputted in source driving chip compared with required input in the prior art
The quantity of voltage greatly reduces, and so as to reduce wiring, saves cost.
Those of ordinary skills in the art should understand that：The above is only a specific embodiment of the present invention, and
The limitation present invention is not used in, within the spirit and principles of the invention, any modification, equivalent substitution, improvement and etc. done,
It should be included within protection scope of the present invention.
Claims (9)
1. a kind of driving voltage generation method, which is characterized in that including：
According to the characteristic of drive waveforms, drive waveforms are divided at least 2 groups of sub- drive waveforms；
By the endpoint of the sub- drive waveforms, it is determined as reference voltage；
According to the characteristic of sub- drive waveforms, reference voltage requirement and fixed reference voltage, determine other with reference to electricity
Pressure.
2. according to the method described in claim 1, it is characterized in that, the drive waveforms are divided into 3 groups of sub- drive waveforms, specifically
Including：High voltage cross-talk drive waveforms, middle voltage cross-talk drive waveforms, low-voltage cross-talk drive waveforms.
3. according to the method described in claim 2, it is characterized in that, by the endpoint of the sub- drive waveforms, it is determined as with reference to electricity
Pressure, including：
The endpoint of the high voltage cross-talk drive waveforms, middle voltage cross-talk drive waveforms and low-voltage cross-talk drive waveforms is determined
For reference voltage.
4. it according to the method described in claim 3, it is characterized in that, is counted according to needed for the characteristic of sub- drive waveforms, reference voltage
Amount and fixed reference voltage, determine other reference voltages, including：
According to the high voltage cross-talk drive waveforms, middle voltage cross-talk drive waveforms and the respective end of low-voltage cross-talk drive waveforms
Point determines the slope of each sub- drive waveforms of output；
According to the slope of each sub- drive waveforms, other reference voltages are determined using interpolation value method.
5. according to the method described in claim 3, it is characterized in that, the reference voltage requirement is 18；
The endpoint of the high voltage cross-talk drive waveforms is confirmed as the first reference voltage, the 4th reference voltage, the 15th reference
Voltage and the 18th reference voltage；
The endpoint of the middle voltage cross-talk drive waveforms is confirmed as the 4th reference voltage, the 7th reference voltage, the 12nd reference
Voltage and the 15th reference voltage；
The endpoint of low-voltage cross-talk drive waveforms be confirmed as the 7th reference voltage, the 9th reference voltage, the tenth reference voltage and
12nd reference voltage.
6. according to the method described in claim 1, it is characterized in that, the reference voltage requirement is 10,14,18 or 22
It is a.
7. a kind of source electrode drive circuit, which is characterized in that using such as claim 1-6 any one of them driving voltages generation side
Method determines reference voltage.
8. a kind of array substrate, which is characterized in that including source electrode drive circuit as claimed in claim 7.
9. a kind of display device, which is characterized in that including array substrate as claimed in claim 8.
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| CN201810044962.5A CN108091313B (en) | 2018-01-17 | 2018-01-17 | Driving voltage generation method, source electrode driving circuit, array substrate and display device |
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| CN201810044962.5A CN108091313B (en) | 2018-01-17 | 2018-01-17 | Driving voltage generation method, source electrode driving circuit, array substrate and display device |
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| CN108091313B CN108091313B (en) | 2020-12-04 |
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Cited By (1)
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| CN113096608A (en) * | 2019-12-19 | 2021-07-09 | 京东方科技集团股份有限公司 | Electrophoresis display panel, driving method thereof and display device |
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| Publication number | Publication date |
|---|---|
| CN108091313B (en) | 2020-12-04 |
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