CN106297716A - The data-driven method of a kind of display panels and system - Google Patents
The data-driven method of a kind of display panels and system Download PDFInfo
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- CN106297716A CN106297716A CN201610878237.9A CN201610878237A CN106297716A CN 106297716 A CN106297716 A CN 106297716A CN 201610878237 A CN201610878237 A CN 201610878237A CN 106297716 A CN106297716 A CN 106297716A
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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
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- Liquid Crystal Display Device Control (AREA)
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Abstract
The invention discloses data-driven method and the system of a kind of display panels, relate to technical field of liquid crystal display.The technical problem to be solved in the present invention is the problem of the big visual angle colour cast brought by the drive pattern of display panels in prior art.The application present invention, when the data wire inverting row is driven, within a certain frame time cycle, do not change the drive level that odd-line pixels is corresponding, make the drive level that even rows is corresponding reduce, so that light and dark display line occurs in viewing picture when user looks side ways display screen simultaneously.It can be seen that the present invention alleviates colour cast problem to a certain extent, improve display quality and viewing effect.The present invention is be applicable to LCDs.
Description
Technical field
The invention belongs to technical field of liquid crystal display, particularly relate to a kind of LCD that can improve big visual angle colour cast
The data-driven method of plate and system.
Background technology
Existing large scale liquid crystal display floater (LCD, Liquid Crystal Display) also exist one the most serious
Problem is exactly big visual angle colour cast (Color shift).Colour cast refers to that the color of image is with original tone difference.That is: user is worked as
During the viewing screen of front, picture and image quality color that display shows all present normal condition.But, when user is from display screen
Laterally (with the angle that the vertical direction of display is 45 degree to 90 degree) during viewing, will be clearly felt that picture color occurs partially
From phenomenon, as shown in Figure 1.Along with the increase of viewing angle, display picture color for a user will be more and more paler, face
Color can be lost increasingly severe.
The reason phenomenon of above-mentioned display screen colour cast occur is: when display screen shows high gray picture, and user's stravismus
When seeing display screen, light is blocked when by liquid crystal layer 2, and the picture presenting to user is dark-state, as shown in Figure 2.In Fig. 2,
Display picture is high gray, and stravismus light is blocked, in dark-state.In fig. 2, arrow A1 represents and faces sight line, and arrow B1 represents
Stravismus sight line, reference 1 represents that color filter layers, reference 2 represent that liquid crystal layer, reference 3 represent film crystal
Tube layer.When display screen shows the picture of low GTG, and when user's stravismus sees display screen, light can present normal through liquid crystal layer 2
It is on state of to the picture of user, as shown in Figure 3.In Fig. 3, display picture be low GTG, stravismus light normal through, on state of,
Arrow A2 represents and faces sight line, and arrow B2 represents stravismus sight line.
As shown in Figure 4, wherein abscissa is GTG, and vertical coordinate is brightness.GTG--brightness curve (also known as gamma curve,
Or gamma curve) refer to the relation curve between grey decision-making and the brightness of pixel in liquid crystal display.For liquid crystal
For showing device, in the case of background light source luminosity is constant, through brightness and the GTG electricity controlling liquid crystal deflection of liquid crystal
It is directly proportional between pressure.There is distortion in the picture shown by liquid crystal display, gamma curve is exactly the metric parameter of this distortion.
With reference to the front viewing angle curve (being illustrated by the broken lines) of Fig. 4, screen intensity increases with the increase of grey decision-making.Stravismus with reference to Fig. 4
Visual angle curve (is represented by solid line), and when the picture shown by liquid crystal display presents low GTG, screen intensity is raised.At liquid crystal
When picture shown by display presents high gray, screen intensity reduces.It can be seen that stravismus visual angle curve is bent with front viewing angle
Occur between line that reversely i.e. gamma curve creates distortion.Consequently, it is possible to human eye just may feel that obvious color offset phenomenon.Figure
In 4, abscissa represents gray value (unit is bit), and vertical coordinate represents brightness percentage ratio, and solid line represents stravismus visual angle curve, empty
Line represents front viewing angle curve.
Therefore, the drive pattern of existing LCD need to be improved, with the problem solving big visual angle colour cast.
Summary of the invention
The present invention is to solve by prior art, asking of the big visual angle colour cast that the drive pattern of display panels brings
Topic, it is provided that the data-driven method of a kind of display panels that can improve big visual angle colour cast and system.
According to an aspect of the invention, it is provided the data-driven method of a kind of display panels, comprising:
Obtain the picture to be driven in display panels；
Judge whether described picture to be driven is ninsolid color picture；
When judging that described picture to be driven is ninsolid color picture, all odd-numbered lines in described picture to be driven are maintained to draw
The driving voltage that face is corresponding, reduces the driving voltage that in described picture to be driven, all even number line pictures are corresponding, to drag down simultaneously
The grey decision-making of all even number line pictures in described picture to be driven.
In above-mentioned data-driven method, reduce the driving voltage that in described picture to be driven, all even number line pictures are corresponding,
Including:
The driving voltage that in described picture to be driven, all even number line pictures are corresponding is made all to reduce default voltage change.
In above-mentioned data-driven method, described default voltage change by user to the resolution of GTG and/or described
The colour cast degree of display panels determines.
In above-mentioned data-driven method, described default voltage change is in the range of 0-2V.
In above-mentioned data-driven method, also include:
When judging that described picture to be driven is pure color picture, maintain all row pictures in described picture to be driven corresponding
Driving voltage.
According to another aspect of the present invention, it is provided that the data-driven system of a kind of display panels, comprising:
Acquiring unit, is set to obtain the picture to be driven in display panels；
Judging unit, is set to judge whether described picture to be driven is ninsolid color picture；
Driver element, is set to when described judging unit judges that described picture to be driven is ninsolid color picture, maintains
The driving voltage that in described picture to be driven, all odd-numbered line pictures are corresponding, reduces all even numbers in described picture to be driven simultaneously
The driving voltage that row picture is corresponding, to drag down the grey decision-making of all even number line pictures in described picture to be driven.
In above-mentioned data-driven system, driver element is specifically configured to: be set to judge at described judging unit described
When picture to be driven is ninsolid color picture, maintain the driving voltage that in described picture to be driven, all odd-numbered line pictures are corresponding, with
Time make the driving voltage that in described picture to be driven, all even number line pictures are corresponding all reduce default voltage change, to drag down
The grey decision-making of all even number line pictures in described picture to be driven.
In above-mentioned data-driven system, described default voltage change by user to the resolution of GTG and/or described
The colour cast degree of display panels determines.
In above-mentioned data-driven system, described default voltage change is in the range of 0-2V.
In above-mentioned data-driven system, also include: maintenance unit,
It is set to, when described judging unit judges that described picture to be driven is pure color picture, maintain described picture to be driven
The driving voltage that in face, all row pictures are corresponding.
The data-driven method of display panels of the present invention and system, drive at the data wire inverting row
Time dynamic, within a certain frame time cycle, do not change the drive level that odd-line pixels is corresponding, make even rows corresponding simultaneously
Drive level reduces, so that light and dark display line occurs in viewing picture when user looks side ways display screen.It can be seen that
The present invention alleviates colour cast problem to a certain extent, improves display quality and viewing effect.
The data-driven method of display panels of the present invention and system, it is adaptable in LCD display.
Above-mentioned technical characteristic can combine in any suitable manner or be substituted, as long as can reach by the technical characteristic of equivalence
To the purpose of the present invention.
Accompanying drawing explanation
Hereinafter based on embodiment reference accompanying drawing, the present invention will be described in more detail.Wherein:
Fig. 1 is the schematic diagram that in background technology, LCD display produces big visual angle color offset phenomenon along with viewing angle increases；
When Fig. 2 is the LCD display that in background technology, user's stravismus presents high gray picture, LCD display produces and regards greatly
The principle schematic of angle color offset phenomenon；
When Fig. 3 is the LCD display that in background technology, user's stravismus presents low grey menu, LCD display produces and regards greatly
The principle schematic of angle color offset phenomenon；
Fig. 4 is gamma curve schematic diagram during stravismus visual angle；
Fig. 5 is the displaying principle schematic diagram of LCD display；
Fig. 6 is the display effect schematic diagram after eliminating colour cast in the case of facing；
Fig. 7 is the display effect schematic diagram after eliminating colour cast in the case of side-looking；
Fig. 8 is the structural representation of the data-driven system of the display panels described in detailed description of the invention two；
Fig. 9 is the schematic flow sheet of the data-driven method of the display panels described in detailed description of the invention one；
Figure 10 is initial data oscillogram；
Figure 11 is that the application present invention improves the data waveform figure after colour cast.
In the accompanying drawings, identical parts use identical reference.Accompanying drawing is not according to actual ratio.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
Liquid crystal display screen is with liquid crystal material as basic module, filling liquid crystal material between two blocks of parallel-plates, is come by voltage
Change the arrangement situation of liquid crystal material interior molecules, deep mixed, in picturesque disorder to show to reach the purpose of shading and printing opacity
The display device of image.As long as additionally, add the filter layer of three-primary colours between two pieces of flat boards, so that it may realize coloured image
Display.
So-called GTG, be the brightest and the darkest between brightness flop.In general, GTG is divided into some parts, in order to
In by the signal of input, corresponding screen intensity being carried out management and control.Every digitized video all can be combined by multiple points.
These points are also called pixel (pixels).Generally, each pixel can be made up of three sub-pixels of red, green, blue (R, G, B), its
Many different colors can be presented.Each sub-pixel light source behind can show the brightness of different stage.GTG represents
By the most secretly to the stratum level of different brightness the brightest.Generally, intermediate level is the most, and the picture effect that can present is also
The finest and the smoothest.
When user is with stravismus angle viewing indicator screen, for the picture of same GTG, if not to source drive
Being adjusted, in the most each frame picture, light is when by liquid crystal layer 2, odd-numbered line and the liquid crystal deflection of even number line in corresponding picture
Angle is identical, thus odd-numbered line and even number line can occur with bright or with dark effect simultaneously.In this context, if display shows
Show is high gray picture, and when user faces display screen, picture shown by display should be on state of.But when user looks side ways
During display screen, light is stopped by liquid crystal, and the picture that user sees is changing to dark-state.Draw if display is shown that low GTG
Face, when user faces display screen, the picture shown by display should be dark-state.When but user looks side ways display screen, light
Through liquid crystal layer 2, the picture that user sees is changing on state of.Therefore, the picture of display arises that color offset phenomenon, this color
Phenomenon partially brings poor visual experience to beholder.
For solving above-mentioned big visual angle colour cast technical problem, following example of the present invention, will from the deflection angle of liquid crystal
Odd-numbered line in each frame of same grey menu and the level adjustment of even number line are inconsistent, and picture can be made to occur between bright dark phase
Picture such that it is able to alleviate color offset phenomenon to a certain extent.
Embodiment one
Fig. 9 shows the schematic flow sheet of the data-driven method of the present embodiment display panels.As it is shown in figure 9, this
Embodiment data-driven method mainly includes that step S1 is to step S4.
In step sl, the picture to be driven in display panels is obtained.
After LCD start, TCON (Timing Controller, time schedule controller) normally works.Specifically, LCD institute is gathered
Each frame picture data of display, to realize data transmission.
In step s 2, it is judged that whether described picture to be driven is ninsolid color picture.
Specifically, when LCD shows nth frame picture, the judging unit in TCON whether it is pure color to picture to be driven
Picture is identified judging.If judging, picture to be driven is ninsolid color picture, then perform step 3.
In step s3, when judging that picture to be driven is ninsolid color picture, remain all in described picture to be driven
The driving voltage that odd-numbered line picture is corresponding, reduces the driving electricity that in described picture to be driven, all even number line pictures are corresponding simultaneously
Pressure, to drag down the grey decision-making of all even number line pictures in described picture to be driven.
Specifically, for ninsolid color picture, go to judge picture to be shown by the H-Sync (line synchronising signal) of picture
Data are odd-numbered line or even number line.If data to be shown belong to odd row data, then disregard.
For even number of lines evidence, then compensated by the data of the driver element antithesis several rows in TCON, it is thus achieved that after compensation
Even number of lines evidence, then LCD is driven.
In step s 4, when judging that described picture to be driven is pure color picture, institute in described picture to be driven is maintained
There is the driving voltage that row picture is corresponding.
Specifically, if picture to be driven is pure color picture, then disregard.
In the present embodiment, the mode that the data of antithesis several rows compensate is particularly as follows: drag down the GTG of even number line so that
The deflection angle of the liquid crystal of even number line is different from the deflection angle of the liquid crystal of odd-numbered line.Referring to Fig. 5, with high gray picture it is
Example illustrates.In Fig. 5, stravismus sees that light is blocked when odd-numbered line, and stravismus sees that when even number line light is normal through, arrow
A3 represents and faces sight line, and arrow B3 all represents stravismus sight line.
When user faces display screen, odd-numbered line light can pass through liquid crystal, and picture is on state of.Even number line light is hindered by liquid crystal
Gear, picture is dark-state.Odd-numbered line picture and even number line picture composition present light and dark complete picture.When user looks side ways display
During screen, odd-numbered line light is stopped by liquid crystal, and picture is dark-state.Even number line light can pass through liquid crystal, and picture is on state of, and then makes
Even number line picture and odd-numbered line picture composition present and completely show picture between bright dark phase, as shown in Figure 7 (odd-numbered line is dark,
Even number line is brighter).It is to say, owing to eliminating colour cast, therefore (odd-numbered line is brighter, even for the stravismus visual angle picture shown in Fig. 7
Several rows is dark) with shown in Fig. 6 face picture as there is the display effect between bright dark phase.In Fig. 6 and Fig. 7, n is the most whole
Number.
Eventually pass through the data waveform effect after data process as shown in Figure 10 and Figure 11.In Figure 10 and Figure 11, T1 segment table
Showing the first frame picture interval, T2 segment table shows the second frame picture interval.
It should be noted that the present embodiment is in the case of without changing dot structure and light shield, only need to be to data-driven
Pattern improves, and can solve the technical problem of big visual angle colour cast.The present embodiment can be applied in large-scale LCD liquid crystal module
On display screen, to solve the problem of big visual angle colour cast, be conducive to improving display quality.
Further, reduce the driving voltage that in described picture to be driven, all even number line pictures are corresponding, including:
The driving voltage that in described picture to be driven, all even number line pictures are corresponding is made all to reduce default voltage change.
Further, described default voltage change by user to the resolution of GTG and/or described LCD
The colour cast degree of plate determines.
Specifically, the voltage change preset can identify the colour cast situation balance of situation and LCD according to human eye to GTG
Determine.In general, the big then colour cast situation of the voltage change preset preferably, but can be also possible to uneven the asking of GTG occur
Topic.Therefore, user's resolution to GTG and the colour cast degree of display panels need to be weighed.
Further, described default voltage change is in the range of 0-2V.
In the present embodiment, the reason not processed pure color picture has three.
First reason, for pure color picture, if one bright one dark between row and row, then can allow human eye feel display inequality
Even.
Second reason, compared with ninsolid color picture, human eye feels less sensitive to the big visual angle colour cast of pure color picture.
3rd reason, in the realistic case, LCD seldom has the situation showing pure color picture completely.
Embodiment two
Fig. 8 shows the structural representation of the data-driven system of the display panels described in the present embodiment.Such as Fig. 8 institute
Showing, the present embodiment data-driven system mainly includes acquiring unit, judging unit and the driver element being sequentially connected with.
Specifically, acquiring unit is set to obtain the picture to be driven in display panels.
Specifically, acquiring unit is the low electricity being mounted in the time schedule controller TCON of large-scale LCD in actual applications
Pressure reduction divides download unit.TCON obtains pixel data input, is mounted in the low-voltage in the time schedule controller TCON of large-scale LCD
Difference download unit obtains input signal and is sent to data analysis module.
Judging unit is set to judge whether described picture to be driven is ninsolid color picture.
Specifically, it is judged that unit is data analysis module in actual applications.Data analysis module judges that nth frame picture is
No for pure color picture, then by the even number of lines in ninsolid color picture data according to extracting and sending to data processing module.
H-Sync is particularly utilized to judge whether the every data line of nth frame picture is even number line, then by even number of lines according to extracting
Come.
Driver element is set to, when judging unit judges that described picture to be driven is ninsolid color picture, treat described in maintenance
Drive the driving voltage that in picture, all odd-numbered line pictures are corresponding.Reduce all even number line pictures in described picture to be driven simultaneously
Corresponding driving voltage, to drag down the grey decision-making of all even number line pictures in described picture to be driven.The model of the grey decision-making dragged down
It is trapped among 50-100.
Specifically, driver element includes data processing module in actual applications.If the GTG of above-mentioned ninsolid color picture is
255, the grey decision-making of the even number line of acquisition is pulled low to 200 by data processing module.The even number line grey decision-making after dragging down is utilized to drive
Even number line liquid crystal rotates, and it is many that user's odd-numbered line light of seeing of stravismus is blocked comparison by liquid crystal, brightness can ratio dark.Even number line is saturating
The light crossing liquid crystal layer 2 is the most, and picture display can be brighter.Display obtains light and dark picture, without as original
Only see dark picture like that.Light and dark display line is again through the Homogenization Treatments of human eye, and then to a great extent
Alleviate color offset phenomenon.
Driver element the most also includes Gamma module and small-sized low voltage difference uploading unit.Gamma module
According to the grey decision-making modulation gamma curve that even number line is new, and by small-sized low voltage difference uploading unit, clock signal is sent
To integrated chip circuitry.
In the present invention one preferred embodiment, driver element is specifically configured to:
When judging that described picture to be driven is ninsolid color picture, all odd-numbered lines in described picture to be driven are maintained to draw
The driving voltage that face is corresponding.Make the driving voltage that in described picture to be driven, all even number line pictures are corresponding all reduce default simultaneously
Voltage change, to drag down the grey decision-making of all even number line pictures in described picture to be driven.
Specifically, reduce the voltage change preset and be preferably 55.
The above-mentioned grey decision-making by the even number line of acquisition is pulled low to 200, and wherein GTG has been dragged down 55 ashes by present embodiment
Rank are worth.
Further, described default voltage change by user to the resolution of GTG and/or described LCD
The colour cast degree of plate determines.
Specifically, when reality is applied, the value of voltage change according to human eye to the resolution of GTG and LCD to be driven
Colour cast degree determine.
The data-driven system of a kind of display panels described in present embodiment:
When user looks side ways the display screen of display high gray picture, user's sight line is approximately perpendicular to liquid crystal major axis, and light exists
By being stopped by liquid crystal during liquid crystal layer 2, the picture that user sees is dark-state.The display screen of low grey menu is shown when user looks side ways
Time, user's sight line is nearly parallel to the long axial ray of liquid crystal, and light can be normally through liquid crystal layer 2, and the picture that user sees is bright
State.Human eye can feel the existence of colour cast, utilizes this phenomenon just can control source drive level to obtain between bright dark phase
Display picture.
When reality is applied, it is only necessary to three functional units of embedding in time schedule controller TCON: acquiring unit, judgement list
Unit and driver element.
The data-driven system of the display panels that can improve big visual angle colour cast described in present embodiment, simply exists
Increasing by three functional modules under the basis of original hardware to process data, hardware annexation is linear type, simple in construction,
Cost-effective, cause burden will not to former display.
Further, described default voltage change is in the range of 0-2V.
Further, the data-driven system of the display panels that can improve big visual angle colour cast described in present embodiment
System also includes: maintenance unit, is set to when described judging unit judges that described picture to be driven is pure color picture, maintains institute
State the driving voltage that in picture to be driven, all row pictures are corresponding.
The reason not processed pure color picture is as follows:
First reason, for pure color picture, if one bright one dark between row and row, then can allow human eye feel display inequality
Even.
Second reason, compared with ninsolid color picture, human eye feels less sensitive to the big visual angle colour cast of pure color picture.
3rd reason, in the realistic case, LCD seldom has the situation showing pure color picture completely.
While it is disclosed that embodiment as above, but described content is only to facilitate understand the present invention and adopt
Embodiment, be not limited to the present invention.Technical staff in any the technical field of the invention, without departing from this
On the premise of spirit and scope disclosed in invention, in form and any amendment and change can be made in details implement,
But protection scope of the present invention, still must be defined in the range of standard with appending claims.
Claims (10)
1. the data-driven method of a display panels, it is characterised in that including:
Obtain the picture to be driven in display panels；
Judge whether described picture to be driven is ninsolid color picture；
When judging that described picture to be driven is ninsolid color picture, maintain all odd-numbered line pictures pair in described picture to be driven
The driving voltage answered, reduces the driving voltage that in described picture to be driven, all even number line pictures are corresponding simultaneously, described to drag down
The grey decision-making of all even number line pictures in picture to be driven.
Method the most according to claim 1, it is characterised in that reduce all even number line pictures pair in described picture to be driven
The driving voltage answered, including:
Making in described picture to be driven, the driving voltage that all even number line pictures are corresponding all reduces default voltage change.
Method the most according to claim 2, it is characterised in that described default voltage change is by user's knowledge to GTG
Not Du and/or the colour cast degree of described display panels determine.
Method the most according to claim 3, it is characterised in that described default voltage change is in the range of 0-2V.
Method the most according to any one of claim 1 to 4, it is characterised in that also include:
When judging that described picture to be driven is pure color picture, maintain all corresponding driving of row picture in described picture to be driven
Galvanic electricity pressure.
6. the data-driven system of a display panels, it is characterised in that including:
Acquiring unit, is set to obtain the picture to be driven in display panels；
Judging unit, is set to judge whether described picture to be driven is ninsolid color picture；
Driver element, is set to when described judging unit judges that described picture to be driven is ninsolid color picture, remains described
The driving voltage that in picture to be driven, all odd-numbered line pictures are corresponding, reduces all even number lines in described picture to be driven simultaneously and draws
The driving voltage that face is corresponding, to reduce the grey decision-making of all even number line pictures in described picture to be driven.
System the most according to claim 6, it is characterised in that described driver element is specifically configured to:
When judging that described picture to be driven is ninsolid color picture, maintain all odd-numbered line pictures pair in described picture to be driven
The driving voltage answered, makes the driving voltage that in described picture to be driven, all even number line pictures are corresponding all reduce default electricity simultaneously
Pressure changing value, to reduce the grey decision-making of all even number line pictures in described picture to be driven.
System the most according to claim 7, it is characterised in that described default voltage change is by user's knowledge to GTG
Not Du and/or the colour cast degree of described display panels determine.
System the most according to claim 8, it is characterised in that described default voltage change is in the range of 0-2V.
10. according to the system according to any one of claim 6 to 9, it is characterised in that also include:
Maintenance unit, is set to, when described judging unit judges that described picture to be driven is pure color picture, treat described in maintenance
Drive the driving voltage that in picture, all row pictures are corresponding.
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| CN106875896A (en) * | 2017-04-28 | 2017-06-20 | 京东方科技集团股份有限公司 | A kind of source drive IC, display device and its driving method |
| CN110085189A (en) * | 2019-05-15 | 2019-08-02 | 京东方科技集团股份有限公司 | A kind of display base plate, display device, picture display process |
| CN111862877A (en) * | 2020-07-28 | 2020-10-30 | 惠科股份有限公司 | Wide-viewing-angle adjustment method, display panel and computer-readable storage medium |
| CN113539205A (en) * | 2021-07-30 | 2021-10-22 | 深圳市华星光电半导体显示技术有限公司 | Pixel voltage determination method and device, electronic equipment and storage medium |
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