CN109147697A - A kind of method of the fast automatic adjustment LCM VCOM value of complete machine state - Google Patents
A kind of method of the fast automatic adjustment LCM VCOM value of complete machine state Download PDFInfo
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- CN109147697A CN109147697A CN201811028859.8A CN201811028859A CN109147697A CN 109147697 A CN109147697 A CN 109147697A CN 201811028859 A CN201811028859 A CN 201811028859A CN 109147697 A CN109147697 A CN 109147697A
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- Prior art keywords
- value
- lcm
- vcom
- vcom value
- adjustment
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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
-
- 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
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0247—Flicker reduction other than flicker reduction circuits used for single beam cathode-ray tubes
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The present invention relates to a kind of methods of the fast automatic adjustment LCM VCOM value of complete machine state.VCOM value is sent using Factory Command mode by adjusting jig JIG after complete machine adjusts white balance step, for the range of VCOM value within metric 0 ~ 127, measurement range control then carries out the adjustment of VCOM value 34 ~ 94；Complete machine saves VCOM value after VCOM adjustment on mainboard, while the IC on LCM is sent to by way of I2C；When each AC is powered on, compares the VCOM value on LCM and whether the VCOM value on mainboard is consistent, it is such as inconsistent, then it re-writes.The present invention flows directly into subsequent processing assembling complete machine after LCM is completed, and saves and individually lights LCM, and using the method for adjustment and JIG after improving, rapidly finds out best VCOM value, thus greatly reduce working hour, increase production capacity.
Description
Technical field
The present invention relates to a kind of methods of the fast automatic adjustment LCM VCOM value of complete machine state.
Background technique
The method of present industry adjustment LCM VCOM value is: lighting liquid crystal display die set (LCM), then access adjustment is controlled
Tool, commissioning staff change VCOM value on one side from small to large, estimate the flicker level of picture on one side, judge film flicker degree most
As a child corresponding VCOM value is set to best VCOM value, then best VCOM value burning into the IC of LCM.
The prior art has the disadvantage in that
1, this method is just to be adjusted VCOM in the LCM stage, also to light LCM, access adjustment jig.Because the LCM stage
Interface has various, and the interface for lighting tool is caused also to adjust, and operating procedure increases, and waste of time influences production capacity.
2, this method judges the flicker level of picture by artificial naked eyes, and False Rate is high, and precision is inadequate, time-consuming more.
3, this method has just deposited the VCOM value adjusted in the LCM stage, but after complete machine matching mainboard, powers on wink in AC
Between, mainboard can carry out reading data to the IC of LCM, be likely to result in the loss of VCOM data.
4, this method is complex for operation step, time-consuming more, influences production capacity.
Summary of the invention
The purpose of the present invention is to provide a kind of methods of the fast automatic adjustment LCM VCOM value of complete machine state, can be fast
Fast automatically adjustment LCM VCOM value, simplifies operation, reduces the time it takes, improve production capacity, be suitable for all production liquid crystal
The factory of display.
To achieve the above object, the technical scheme is that a kind of fast automatic adjustment LCM VCOM value of complete machine state
Method, include the following steps:
Step S1, the adjustment of VCOM value is carried out by adjusting jig JIG after complete machine adjusts white balance step；
Step S2, adjustment jig JIG sends VCOM value by Factory Command mode, and the range of VCOM value is in the decimal system
0 ~ 127 within, measurement range control then carries out the adjustment of VCOM value 34 ~ 94；
Step S3, complete machine saves VCOM value after VCOM adjustment on mainboard, while being sent on LCM by way of I2C
IC；When each AC is powered on, compares the VCOM value on LCM and whether the VCOM value on mainboard is consistent, it is such as inconsistent, then again
Write-in.
In an embodiment of the present invention, in the step S1, adjustment is directlyed adopt after complete machine adjusts white balance step
Interface used by white balance step is connect with adjustment jig JIG, and the adjustment of VCOM is then carried out by adjusting jig JIG.
In an embodiment of the present invention, in the step S2, during the adjustment of VCOM value, by the flashing journey for measuring LCM
Degree, to carry out VCOM value adjustment, when the flicker level of LCM is minimum, as best VCOM value.
In an embodiment of the present invention, in the step S2, the flicker level of LCM is directly proportional to Flicker value, i.e.,
Flicker value is lower, and the flicker level of LCM is lower.
In an embodiment of the present invention, in the step S2, the specific implementation of VCOM value adjustment are as follows: be from VCOM value
34 start, and survey a Flicker value every 8 points, i.e. 34,42,50,58,66,74,82,90 corresponding Flicker of measurement
Value, finds out the smallest VCOM value of wherein Flicker, it is assumed that is A, then takes VCOM every two points within lower 8 points on it
Value, i.e. measurement this corresponding Flicker value of 6 points of A-6, A-4, A-2, A+2, A+4, A+6, then it is minimum in this 6 points
The corresponding VCOM value of Flicker value is best VCOM value.
In an embodiment of the present invention, the Flicker value is measured by CA201 instrument.
In an embodiment of the present invention, in the step S3, VCOM value is sent on LCM by complete machine by way of I2C
IC when, the IC on LCM need to be kept to power on 500ms, and in 0 ~ 500ms, the I2C communication interface of mainboard is set as Floating
State.
In an embodiment of the present invention, before step S1, Auto program need to be added, make picture all over the screen.
Compared to the prior art, the invention has the following advantages:
The present invention is made that variation to previous method of adjustment, i.e. improvement VCOM value adjustment method, adjustment that can be fast automatic
LCM VCOM value simplifies operation, reduces the time it takes, improves production capacity, the factory suitable for all production liquid crystal displays.
Detailed description of the invention
Fig. 1 is the adjustment jig connection type figure that the present invention uses.
Fig. 2 is the relational graph of VCOM value and Flicker value.
Fig. 3 is the flow chart of the method for adjustment after the present invention improves.
Specific embodiment
With reference to the accompanying drawing, technical solution of the present invention is specifically described.
The present invention provides a kind of methods of the fast automatic adjustment LCM VCOM value of complete machine state, include the following steps:
Step S1, the adjustment of VCOM value is carried out by adjusting jig JIG after complete machine adjusts white balance step；
Step S2, adjustment jig JIG sends VCOM value by Factory Command mode, and the range of VCOM value is in the decimal system
0 ~ 127 within, measurement range control then carries out the adjustment of VCOM value 34 ~ 94；
Step S3, complete machine saves VCOM value after VCOM adjustment on mainboard, while being sent on LCM by way of I2C
IC；When each AC is powered on, compares the VCOM value on LCM and whether the VCOM value on mainboard is consistent, it is such as inconsistent, then again
Write-in.
In the step S1, directlys adopt used by adjustment white balance step and connect after complete machine adjusts white balance step
Mouth is connect with adjustment jig JIG, and the adjustment of VCOM is then carried out by adjusting jig JIG.
In the step S2, during the adjustment of VCOM value, by measuring the flicker level of LCM, to carry out VCOM value adjustment,
When the flicker level of LCM is minimum, as best VCOM value.In the step S2, the flicker level and Flicker value of LCM is at just
Than i.e. Flicker value is lower, and the flicker level of LCM is lower.The Flicker value is measured by CA201 instrument.
In the step S2, the specific implementation of VCOM value adjustment are as follows: since VCOM value is 34, surveyed every 8 points
Flicker value, i.e. 34,42,50,58,66,74,82,90 corresponding Flicker values of measurement, find out wherein that Flicker is most
Small VCOM value, it is assumed that be A, then on it within lower 8 points, take VCOM value, i.e. measurement A-6, A-4, A- every two points
2, this corresponding Flicker value of 6 points of A+2, A+4, A+6, then the corresponding VCOM value of minimum Flicker value is in this 6 points
For best VCOM value.
In the step S3, when VCOM value is sent to the IC on LCM by complete machine by way of I2C, it need to keep on LCM
IC power on 500ms, and in 0 ~ 500ms, the I2C communication interface of mainboard is set as Floating state.
Before step S1, Auto program need to be added, make picture all over the screen.
The following are specific implementation processes of the invention.
A kind of method of the fast automatic adjustment LCM VCOM value of complete machine state of the present invention, realization rate are as follows:
1, it is adjusted using complete machine, it is time saving and energy saving.
It is directly carried out using existing interface and adjustment jig (hereinafter referred JIG) after complete machine adjusts white balance step
The interface and JIG for adjusting VCOM(adjustment white balance and adjustment VCOM value share, and Fig. 1 is shown in connection method), ratio is in LCM rank in this way
Section specially lights LCM and then the adjustment JIG of access distinct interface saves 2 big steps, reduces the used time, being conducive to wire body can be realized
BMS (BLU-LCM-SET) one continuous line production model.
2, it is adjusted using complete machine, prevents VCOM value from losing.
Complete machine can all save VCOM value on mainboard (referred to hereinafter as Mainboard) after adjusting every time, while pass through I2C's
Mode is sent to the IC on LCM.Each AC power on can all compare it is whether consistent in the VCOM value on LCM and mainboard,
It is such as inconsistent, then it re-writes.It is thus not in the case where VCOM value is lost.
3, it realizes adjust automatically, improves reliability.
Principle: Flicker value minimum → film flicker most slight → VCOM is best.Using this principle, we pass through CA210
Flicker minimum value is measured to judge best VCOM value, is visually judged than artificially more reliable.Specifically, the VCOM value of LCM is sent out
After changing, the flicker level of LCM can change immediately.This kind variation is presented as the variation of the Flicker value of LCM,
Under special pattern, performance is become apparent.We can go out corresponding Flicker value by CA210 instrument test,
When as film flicker is most slight when Flicker value minimum and when VCOM is best.
4, Mainboard needs to power on 500ms in LCM when communicating with the power IC on LCM because LCM 0 ~
When being itself communication in 500ms, interference cannot be received.So the I2C of Mainboard is set as in 0 ~ 500ms
Floating(floats) state.
5, reducing VCOM value measurement range is 34 ~ 94, reduces the used time.
Script VCOM range is 0 ~ 127 if decimally dividing.Counted by big data, discovery VCOM value with
The relationship of Flicker value can be indicated with Fig. 2.Probability of the best VCOM Distribution value in 0 ~ 33 &95 ~ 127 is no more than 1%, institute
To exclude 0 ~ 33&95 ~ 127, measurement 0 ~ 33&95 ~ 127 are not gone to.This method reduces measurement point, reduces the used time.
6, improve method of adjustment, realize quickly adjustment, improve production capacity.
As shown in figure 3, being 34 to start since VCOM, survey a Flicker values every 8 points, i.e., measurement 34,42,50,58,
66,74,82,90 corresponding Flicker.Find out the smallest V-COM value of wherein Flicker, it is assumed that the value be A, lower 8 on it
Within point, V-COM, i.e. the measurement corresponding Flicker of this 6 points of A-6, A-4, A-2, A+2, A+4, A+6 are taken every two points
Value.In all the points, the corresponding V-COM value of Min Flicker is sent into Monitor.As long as measuring 14 points in this way can find out
Best VCOM value, greatly reduces the used time.
7, adjustment mode requires picture all over the screen, and the VCOM value and Flicker for adjusting out just do not have deviation.So adjusting
Auto program is added before whole, makes picture all over the screen.
The above are preferred embodiments of the present invention, all any changes made according to the technical solution of the present invention, and generated function is made
When with range without departing from technical solution of the present invention, all belong to the scope of protection of the present invention.
Claims (8)
1. a kind of method of the fast automatic adjustment LCM VCOM value of complete machine state, which comprises the steps of:
Step S1, the adjustment of VCOM value is carried out by adjusting jig JIG after complete machine adjusts white balance step；
Step S2, adjustment jig JIG sends VCOM value by Factory Command mode, and the range of VCOM value is in the decimal system
0 ~ 127 within, measurement range control then carries out the adjustment of VCOM value 34 ~ 94；
Step S3, complete machine saves VCOM value after VCOM adjustment on mainboard, while being sent on LCM by way of I2C
IC；When each AC is powered on, compares the VCOM value on LCM and whether the VCOM value on mainboard is consistent, it is such as inconsistent, then again
Write-in.
2. a kind of method of the fast automatic adjustment LCM VCOM value of complete machine state according to claim 1, feature exist
In, in the step S1, complete machine adjust white balance step after directly adopt adjustment white balance step used by interface with
Jig JIG connection is adjusted, the adjustment of VCOM is then carried out by adjusting jig JIG.
3. a kind of method of the fast automatic adjustment LCM VCOM value of complete machine state according to claim 1, feature exist
In in the step S2, during the adjustment of VCOM value, by measuring the flicker level of LCM, to carry out VCOM value adjustment, LCM's
When flicker level is minimum, as best VCOM value.
4. a kind of method of the fast automatic adjustment LCM VCOM value of complete machine state according to claim 3, feature exist
In in the step S2, the flicker level of LCM is directly proportional to Flicker value, i.e. Flicker value is lower, the flashing journey of LCM
It spends lower.
5. a kind of method of the fast automatic adjustment LCM VCOM value of complete machine state according to claim 4, feature exist
In, in the step S2, the specific implementation of VCOM value adjustment are as follows: since VCOM value is 34, surveyed every 8 points primary
Flicker value, i.e. 34,42,50,58,66,74,82,90 corresponding Flicker values of measurement, it is the smallest to find out wherein Flicker
VCOM value, it is assumed that be A, then on it within lower 8 points, take VCOM value, i.e. measurement A-6, A-4, A-2, A+ every two points
2, this corresponding Flicker value of 6 points of A+4, A+6, then the corresponding VCOM value of minimum Flicker value is most in this 6 points
Good VCOM value.
6. a kind of method of the fast automatic adjustment LCM VCOM value of complete machine state according to claim 4 or 5, feature
It is, the Flicker value is measured by CA201 instrument.
7. a kind of method of the fast automatic adjustment LCM VCOM value of complete machine state according to claim 1, feature exist
In when VCOM value is sent to the IC on LCM by complete machine by way of I2C, need to keeping on the IC on LCM in the step S3
Electric 500ms, and in 0 ~ 500ms, the I2C communication interface of mainboard is set as Floating state.
8. a kind of method of the fast automatic adjustment LCM VCOM value of complete machine state according to claim 1, feature exist
In before step S1, Auto program need to be added, make picture all over the screen.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811028859.8A CN109147697A (en) | 2018-09-05 | 2018-09-05 | A kind of method of the fast automatic adjustment LCM VCOM value of complete machine state |
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| CN201811028859.8A CN109147697A (en) | 2018-09-05 | 2018-09-05 | A kind of method of the fast automatic adjustment LCM VCOM value of complete machine state |
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|---|---|---|---|---|
| CN101577078A (en) * | 2009-06-22 | 2009-11-11 | 福建捷联电子有限公司 | Full automatic adjustment and test system for liquid crystal display |
| CN101964167A (en) * | 2010-09-21 | 2011-02-02 | 捷星显示科技（福建）有限公司 | Method for removing LCD flash phenomenon |
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2018
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| CN106507193A (en) * | 2016-11-08 | 2017-03-15 | 四川长虹电器股份有限公司 | Whole set of television realizes that TCON writes the apparatus and method of journey and VCOM debugging |
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