CN104361867B - Splice screen display device and its display drive method - Google Patents
Splice screen display device and its display drive method Download PDFInfo
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- CN104361867B CN104361867B CN201410729073.4A CN201410729073A CN104361867B CN 104361867 B CN104361867 B CN 104361867B CN 201410729073 A CN201410729073 A CN 201410729073A CN 104361867 B CN104361867 B CN 104361867B
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Abstract
The embodiment of the invention discloses one kind splicing screen display device and its display drive method, solving a secondary screen caused by existing traditional mosaic screen needs the technical problem of setting of greater number driver, simultaneously, avoid except being covered with secondary screen available area behind, and the technical problem of these drivers can not be housed enough by what is caused, and cause incomplete technical problem that radiates.Splicing screen display device of the embodiment of the present invention includes：Display screen, is spliced by multiple secondary screens；Multiple data drivers, for driving multiple secondary screens respectively；Picture frame speed controls circuit, according to the original picture frame speed for receiving image, increases original picture frame speed with K multiples so that in during a picture frame corresponding with original picture frame speed, produces K picture frame to multiple data drivers.
Description
Technical field
The present invention relates to splicing screen display device actuation techniques field, more particularly, to one kind splicing screen display device with
And its display drive method.
Background technology
For big display area, e.g. digital advertisement billboard, or indoor tv wall etc., because display area is remote
The area of big single display device, therefore image can be shown to splice screen display device.
So-called screen display device, it is that have multiple secondary screens (tile screen) to show one of an image respectively
Part, and these secondary screens are spliced into a large-sized display screen.Fig. 1 is the configuration diagram of traditional mosaic screen.Such as Fig. 1 institutes
Show, large-sized mosaic screen 100 be by the secondary screen 102 of multiple small sizes with M × N matrix mode splice institute into.Therefore, M values
Typically greater than N values, but it is also possible to be equal to N and constitute the large-sized mosaic screen 100 of a square.Each secondary screen 102
The some corresponding to an image can be shown, and footpath completely will as one after the other image combination of these secondary screens 102
The image of display.
With regard to the splicing screen products of current luminescence component (Light-Emitting Device, LED) array, it is driven using LED
Dynamic device drives LED arrays, and reaches display effect.So that spacing (pitch) is P1.488 specification as an example, such as one piece 12cm
The secondary screen of square, based on a color pixel by being made up of three LED of red, green, blue, it takes around 6400 lamps
Pearl, and typically using the driver of 16 channels, its 60 driver of rough needs.This is for small spacing (fine pitch)
It is required that for, required LED driver can be more.The problem of this under small spacing not only for radiating is had, and in manufacture work
Also can be restricted in skill.
Fig. 2 is the configuration diagram of traditional secondary screen 102.As shown in Fig. 2 for a secondary screen 102, it utilizes n
Bar scan line shows image, and each scanning has m pixel online.Each monochromatic pixel is a LED lamp bead.Such as
This image to display of secondary screen 102 can be just presented in this after n bar scan lines are scanned through, and be some of overall image.
Pixel is usually to be made up of luminescence component (Light-emitting device), at the same time it can also being liquid crystal (LC) pixel.
The pixel of one color is usually to be made up of three pixels of red green blue, is come by the other grey decision-making of three pixels of red green blue
It is combined into the color to be presented.Therefore, it is still to have some quantity in secondary screen 102, such as n bars scan line, and scan line
Upper to have some quantity, such as m pixel, the startup for these m × n × 3 colored pixels is provided by multiple drivers
Multiple passages drive, and correspond to each colored pixels, required grey decision-making is converted into voltage and these m × n × 3 are driven
The luminescence component of individual colored pixels, makes correspondence send required brightness.Therefore, for a secondary screen 102, due to driver
Channel quantity it is low, traditionally need large number of driver, incomplete problem that radiates can be caused.
More specifically, Fig. 3 is the driving mechanism schematic diagram of traditional mosaic screen 100.As shown in figure 3, main frame 50 can be by institute
The digital drawing frame data for the image to be shown, inputs to controller 60 (Controller, TC).Controller 60 controls multiple drivings
Device 62.The passage that these drivers 62 are provided can correspond to the pixel for being connected to mosaic screen 100, therefore, show in image once
In showing, the grey exponent number by controller 60 through these drivers 62 by the luminous source component of each pixel according to predetermined luminance is opened
It is dynamic, and constitute a display image.These drivers 62 are it has been observed that being actually packet and being correspondingly arranged at these secondary screens
102 behind.
The mode of conventional ADS driving secondary screen 102 is that only have the driving of smallest number channel (channel) using low cost
Device 62, these drivers 62 are that direct configuration is connected in the behind of secondary screen 102 with circuit base plate.But a secondary screen 102
It is still that, with a considerable amount of m × n × 3 colored pixels, therefore a secondary screen 102 may require that multiple drivers 62.Work as shadow
The image resolution of picture is increasingly improved, and the image resolution (m × n) of secondary screen 102 can also be improved therewith.The then institute of secondary screen 102
The quantity of the driver 62 needed can also be improved, therefore, and result in a secondary screen 102 needs setting for greater number driver
Put, meanwhile, it except being covered with the available area behind of secondary screen 102, will also cause that the technology of these drivers can not be housed enough
Problem, and cause incomplete technical problem that radiates.
The content of the invention
The embodiments of the invention provide one kind splicing screen display device and its display drive method, existing biography is solved
Secondary screen caused by system mosaic screen needs the technical problem of the setting of greater number driver, simultaneously, it is to avoid except
It is covered with secondary screen available area behind, and the technical problem of these drivers can not be housed enough by what is caused, and causes to dissipate
The incomplete technical problem of heat.
A kind of splicing screen display device provided in an embodiment of the present invention, including：
Display screen, is spliced by multiple secondary screens；
Multiple data drivers, for driving multiple secondary screens respectively；
Picture frame speed controls circuit, and according to the original picture frame speed for receiving image, the original picture frame is increased with K multiples
Speed so that in during a picture frame corresponding with the original picture frame speed, produces K picture frame to multiple data-drivens
Device, wherein, K is the integer more than or equal to 2；
Wherein, the picture frame speed control circuit is corrected to an original gray-scale value of each pixel, and at the K
The picture frame for having a quantity in picture frame is to increase the amendment grey decision-making after a GTG to show with the original gray-scale value, the number
Amount is one of them of 0 to K-1.
Preferably,
The value of the K is 2L, L is natural number.
Preferably,
The L values are 2, described 2LGrey decision-making produced by individual picture frame entirety be to original gray-scale value increase by 0,1/4,
2/4 or 3/4 GTG degree；
Wherein, 0 represent the pixel described 2LAll shown in individual picture frame for the original gray-scale value；
1/4 represent the pixel this 2LHave that 3 picture frames show in individual picture frame for the original gray-scale value, another 1 figure
What frame was then shown is the original gray-scale value plus the amendment grey decision-making after a GTG；
2/4 represents the pixel described 2LHave that 2 picture frames show in individual picture frame for the original gray-scale value, another 2
What picture frame was then shown is the original gray-scale value plus the amendment grey decision-making after a GTG；
3/4 represents the pixel described 2LHave that 1 picture frame shows in individual picture frame for the original gray-scale value, another 3
What picture frame was then shown is the original gray-scale value plus the amendment grey decision-making after a GTG.
Preferably,
The splicing screen display device also includes：
One picture frame internal memory, the image is previously stored the picture frame internal memory, and according to the combination of multiple secondary screens, it is right
Multiple secondary screens should be distributed to.
Preferably,
The splicing screen display device also includes：
Multiple picture frame internal memories, correspond to multiple secondary screens and are configured respectively, the multiple described screens of described image mapping
Curtain, and after allocating in advance, it is separately stored in those picture frame internal memories.
Preferably,
The original picture frame speed is 60Hz or 50Hz, and the picture frame speed of the K picture frame is 240Hz or 200Hz.
A kind of display drive method provided in an embodiment of the present invention, is used in any one referred in the embodiment of the present invention
Described splicing screen display device, including：
The splicing screen display device includes display screen, multiple data drivers and picture frame speed control circuit, institute
State display screen be by multiple secondary screens splicing institute into, it is characterised in that display drive method includes：
Multiple data drivers are configured, to drive multiple secondary screens respectively；
Circuit is controlled by the picture frame speed, it is described with the increase of K multiples according to the original picture frame speed for receiving image
Original picture frame speed so that in during a picture frame corresponding with the original picture frame speed, produces K picture frame to described in multiple
Data driver, wherein, K is the integer more than or equal to 2；
Circuit is controlled to correct an original gray-scale value of each pixel by the picture frame speed, and at the K
The picture frame for having a quantity in picture frame is to increase the amendment grey decision-making after a GTG to show with the original gray-scale value, the number
Amount is one of them of 0 to K-1.
Preferably,
The K values are 2L, L is natural number.
Preferably,
The L values are 2, described 2LGrey decision-making produced by individual picture frame entirety be to original gray-scale value increase by 0,1/4,
2/4 or 3/4 GTG degree；
Wherein, 0 represent the pixel described 2LAll shown in individual picture frame for the original gray-scale value；
1/4 represent the pixel this 2LHave that 3 picture frames show in individual picture frame for the original gray-scale value, another 1 figure
What frame was then shown is the original gray-scale value plus the amendment grey decision-making after a GTG；
2/4 represents the pixel described 2LHave that 2 picture frames show in individual picture frame for the original gray-scale value, another 2
What picture frame was then shown is the original gray-scale value plus the amendment grey decision-making after a GTG；
3/4 represents the pixel described 2LHave that 1 picture frame shows in individual picture frame for the original gray-scale value, another 3
What picture frame was then shown is the original gray-scale value plus the amendment grey decision-making after a GTG.
Preferably,
The image is previously stored the picture frame internal memory, and according to the combination of multiple secondary screens, correspondence is distributed to many
The individual secondary screen.
Preferably,
Described image maps multiple secondary screens, and after allocating in advance, is separately stored in the multiple secondary screens of correspondence
Multiple picture frame internal memories.
Preferably,
The original picture frame speed is 60Hz or 50Hz, and the picture frame speed of the K picture frame is 240Hz or 200Hz.
As can be seen from the above technical solutions, the embodiment of the present invention has advantages below：
A kind of splicing screen display device and its display drive method provided in an embodiment of the present invention, wherein display device bag
Include：Display screen, is spliced by multiple secondary screens；Multiple data drivers, for driving multiple secondary screens respectively；Picture frame
Rate control circuits, according to the original picture frame speed for receiving image, original picture frame speed is increased with K multiples so that with it is original
During the corresponding picture frame of picture frame speed, K picture frame is produced to multiple data drivers, wherein, K is more than or equal to 2
Integer；Wherein, picture frame speed control circuit is corrected to an original gray-scale value of each pixel, and is had in K picture frame
The picture frame of one quantity is that the amendment grey decision-making increased with original gray-scale value after GTG is shown, quantity is 0 to K-1 wherein
One.In the present embodiment, by increasing the original picture frame speed with K multiples so that corresponding with the original picture frame speed
During one picture frame, K picture frame is produced to multiple data drivers so that picture frame speed controls circuit to each picture
One original gray-scale value of element is corrected, and the picture frame for having a quantity in the K picture frame is with original gray-scale value increase
Amendment grey decision-making after one GTG shows, solve a secondary screen caused by existing traditional mosaic screen need it is more
The technical problem of the setting of quantity driver, simultaneously, it is to avoid except being covered with secondary screen available area behind, and will be caused
The technical problem of these drivers can not be housed enough, and cause incomplete technical problem that radiates.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is the configuration diagram of traditional mosaic screen of prior art；
Fig. 2 is the configuration diagram of traditional secondary screen of traditional mosaic screen of prior art；
Fig. 3 is the driving mechanism schematic diagram of traditional mosaic screen of prior art；
Fig. 4 is a kind of structural representation of the first embodiment of splicing screen display device provided in the embodiment of the present invention；
Fig. 5 (a) -5 (b) is a kind of structure of the second embodiment of splicing screen display device provided in the embodiment of the present invention
Schematic diagram；
Fig. 6 is a kind of schematic flow sheet of the first embodiment of display drive method provided in the embodiment of the present invention；
Fig. 7 is a kind of schematic flow sheet of the second embodiment of display drive method provided in the embodiment of the present invention；
Fig. 8 is the grey decision-making provided in the embodiment of the present invention and the relation schematic diagram of gray scale voltage；
Fig. 9 is the schematic diagram of mechanism of the picture frame speed control circuit generation GTG amendment provided in the embodiment of the present invention；
Illustrate：50th, main frame；60th, controller (C)；62nd, driver；100th, mosaic screen；102nd, secondary screen；When the 210th,
Sequence controller (TC)；212nd, picture frame speed control circuit (FRC)；220th, data driver；222nd, gate pole driver.
Embodiment
The embodiments of the invention provide one kind splicing screen display device and its display drive method, existing biography is solved
Secondary screen caused by system mosaic screen needs the technical problem of the setting of greater number driver, simultaneously, it is to avoid except
It is covered with secondary screen available area behind, and the technical problem of these drivers can not be housed enough by what is caused, and causes to dissipate
The incomplete technical problem of heat.
To enable goal of the invention, feature, the advantage of the present invention more obvious and understandable, below in conjunction with the present invention
Accompanying drawing in embodiment, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that disclosed below
Embodiment be only a part of embodiment of the invention, and not all embodiment.Based on the embodiment in the present invention, this area
All other embodiment that those of ordinary skill is obtained under the premise of creative work is not made, belongs to protection of the present invention
Scope.
The present invention proposes the driving mechanism to splicing screen display device, can not only reduce driver used in secondary screen
Quantity, and the gradation of display image can be increased.Illustrate the present invention for some embodiments below, but the present invention is not
It is only limitted to lifted embodiment.
On the problem of the quantity of the driver required for considering how one secondary screen of reduction, the present invention proposes to make
Used in driver used in general panel display board, and the traditional driver of mosaic screen is not used.
Driving framework proposed by the present invention, uses the data driver (source driver) and lock of such as flat-panel monitor
The mode of driver promotes LED pixel.Additionally, due to single secondary screen, its image resolution is relative be it is relatively low, therefore
Original digital signal can be redistributed processing.Furthermore it is also possible to produce faster frame rate, differentiated to increase GTG
Rate, to increase gradation, and shows more rich color.
Referring to Fig. 4, a kind of first embodiment of the splicing screen display device provided in the embodiment of the present invention includes：
Because the image resolution of current panel display board is big more than the image resolution of a secondary screen 102.Typically
Flat-panel monitor be, for example, liquid crystal display panel (LCD panel) or luminescence component display panel (LED panel), its shadow
As resolution ratio such as 720x480,1920x1080 or even more high image resolution.Therefore using in panel display board
Driver, such as single data driver 220, its driving channel quantity having is greater than in mosaic screen 100
Channel quantity required for one secondary screen.Therefore, a secondary screen of the invention, for data driver, it is for example only
Need one, and or in response to the research and development of higher image resolution, a small amount of data driver can be used only
Drive a secondary screen.Due to being the type of drive using data driver 220 with gate pole driver 222, it needs sequential control
The controlling mechanism of 210 pairs of data drivers 220 of device (TC) processed and gate pole driver 222, also in response to change.
So in the splicing screen display device of the present invention, for the data driver 220 required for a secondary screen
Quantity can be reduced to one, or on a small quantity, the problem of not interfering with radiating, thus can in response to high image resolution display.
A kind of first embodiment of the splicing screen display device provided in Fig. 5 (a) -5 (b), the embodiment of the present invention is provided
Including：
Splicing screen display device meets the driving signal schematic diagram of VESA standards.As shown in Fig. 5 (a), under VESA standards,
Vertical synchronizing signal (Vsync) is to correspond to a picture frame, therefore the numerical data of an image, and it is also so-called picture frame number
According to meeting be inputted during a vertical synchronizing signal.In other words, the frequency of vertical synchronizing signal is exactly picture frame speed, one
As be 60Hz or 50Hz.After the pulses generation of vertical synchronizing signal, horizontal synchronization signal (Hsync) is produced by gate pole driver
Raw, to scan the image of each line, it is namely within the cycle of a vertical synchronizing signal, it is necessary to send n pulse news
Number add front and rear buffering during buffering pulse.And between horizontal synchronization signal (Hsync) cycle, send signal
(DE) time is obtained by data driver input data to define, it is exactly the GTG in m online pixel of a scanning respectively
Voltage needs the driving secondary screen within the cycle of signal (DE).As Fig. 5 (b) show horizontal synchronization signal (Hsync) and signal
(DE) clearer and more definite sequential relationship.Signal (DE) needs the pixel correspondence GTG of one horizontal scanning line of driving during high levle
The display of value.In this way, a vertical synchronizing signal (Vsync) inspires the display of a picture frame.
It should be noted that the present invention drives secondary screen using the driver of flat-panel monitor.Due to flat-panel monitor
Driver be based on its and show efficiency, its frequency faster can for example reach 240Hz or higher picture frame speed.This
The picture frame speed of sample is for the display of a secondary screen, and its driving force is greater than demand.In addition, for standard 60Hz picture frame
Speed, its equivalent to one pixel can maintain the display time of about 1/60 second under identical GTG.Also, by mosaic screen institute
The image of display, its greyscale resolution is smaller, the resolution ratio of e.g. 6, that is to say, that grey decision-making only has 26=64 GTGs
Value, therefore gradation is not enough, and the image of flat-panel monitor is generally used for, its greyscale resolution can reach 28=256
The change of grey decision-making.Therefore, the present invention is in the data driver using high driving channel and high picture frame speed, except reducing
The quantity of data driver used in one secondary screen, e.g. 1, the present invention is it is also proposed that using picture frame speed in addition
(Frame Rate Control, FRC) circuit 212 is controlled, such as shown in Fig. 4, thus bigger color-resolution can be reached,
After its mechanism will be described in.Picture frame speed control (FRC) circuit 212 is normally integrated in time schedule controller (TC) 210, still
This is not unique mode.
Referring to Fig. 6, a kind of first embodiment of the display drive method provided in the embodiment of the present invention includes：
In step S250, the complete drawing frame data to be shown will be inputted, will be stored in picture frame internal memory；
In step S252, the matrix structure by allocation unit according to the secondary screen of mosaic screen 100 is divided when by image
Cut, can suitably be assigned in each secondary screen；
In step S254, picture frame speed control circuit can change original such as 60Hz picture frame speed into complete higher picture frame
Speed, e.g. 240Hz.According to the highest picture frame speed of permission, usually the 2 of 60HzLTimes, L is natural number, be 1,2,
3、…、N.It is the highest picture frame speed for depending on driver in this its higher limit.With 240Hz picture frame speed, it is namely relative
60Hz increases by 4 times of picture frame speed.Therefore during a 60Hz original picture frame, thus it is possible to vary have 4 picture frames.Have be exactly
In the cycle of a 60Hz vertical synchronizing signal, under 240Hz, 4 vertical synchronizing signals are changed into, therefore except original shadow
As outer, the display of three images can also be inserted into, changing for its grey decision-making can be described in detail in Fig. 8, Fig. 9 below；
After adjustment of the step S254 to picture frame speed, in step S256, including original drawing frame data and insertion
Drawing frame data can be sequentially driven secondary screen and show these images by data driver.
Referring to Fig. 7, a kind of second embodiment of the display drive method provided in the embodiment of the present invention includes：
Fig. 7 show the embodiment of another change, but its mechanism is still similar to embodiment illustrated in fig. 6, difference therebetween
It is different as follows：
Embodiment in the present invention shown in Fig. 7, each secondary screen can set corresponding picture frame internal memory, this picture frame internal memory
Capacity is only required to store the image of secondary screen.Embodiment relative to Fig. 6, in Fig. 7 step S250 and step
S252 is exchanged.
It should be noted that, in step S252, for the input image to be shown, before picture frame internal memory is not yet stored into just
First distribute, afterwards in step S250 by the secondary drawing frame data distributed, be stored into respectively in corresponding picture frame internal memory.Afterwards
Step S254 and step S256 be then same as Fig. 6.
Correction mechanism of picture frame speed control (FRC) circuit 212 to grey decision-making is described below, in common application technology
When, a color pixel is constituted with three pixels of red green blue, it is to utilize its three monochromatic pixels, according to grey decision-making production
This raw monochromatic brightness, and a color pixel is gone out by the luminance mix of three monochromatic pixels of red, green, blue.Therefore, grey decision-making
Change can all produce the color change showed.The characteristic of the persistence of vision of human eye is additionally based on, changes the color received general
It is the aggregate color that is received in 16.67ms to determine, therefore the increased picture frame speed of institute can be last by multiple for adjustment
Grey decision-making mixed by picture frame.
The GTG and the gray scale voltage of actual driving of numeral are retouched first.Because the brightness of liquid-crystalize element or LEDization element is
By the voltage applied or show that electric current is determined, and be generally not linear change.Fig. 8 is illustrated according to one embodiment of the invention,
The relation schematic diagram of grey decision-making and gray scale voltage.Referring to Fig. 8, a monochromatic pixel, by taking the grey decision-making of 6 as an example, it has
64 linear GTGs, but the driving voltage required for each corresponding GTG is not linear, it is therefore desirable to it is bent using gamma
Line corrects driving voltage, so for a grey decision-making gi, corresponding driving voltage V is obtained using gamma curvei.But base
In the circuit of e.g. 6, it also can only produce 64 kinds of voltages.Therefore, greyscale resolution is exactly 64 ranks.
Further, description produces it how under 64 GTGs of 6 by picture frame speed control (FRC) circuit 212
His GTG.Picture frame speed control circuit as shown in Figure 9 produces the mechanism of GTG amendment, by taking 240Hz picture frame speed as an example
To describe, its picture frame under 60Hz picture frame speeds can produce correspondence by picture frame speed control (FRC) circuit 212
4 picture frames, represented with f1, f2, f3, f4.For a pixel, its original predetermined grey decision-making to be shown e.g. gi。
If being all display g in this 4 picture frame f1~f4iGrey decision-making, then still maintained after this 4 picture frame f1~f4 mixing
Grey decision-making gi, therefore grey decision-making is modified to 0.If any one picture frame in this 4 picture frame f1~f4, it is, for example, picture frame
F1, and by the grey decision-making g of this picture frame f1 this pixeliPlus 1 turns into gi+1.Other three picture frame f2~f4 of others then remain aobvious
Show grey decision-making gi.In this way, can be increased the amendment of 1/4 GTG after this 4 picture frame f1~f4 mixing.If in this 4 figures
Wantonly two picture frames in frame f1~f4, it is, for example, picture frame f1, f2, and by the grey decision-making g of this picture frame f1, f2 this pixeliPlus 1
As gi+1.Other others two picture frames f3, f4 then maintain display grey decision-making gi.In this way, after this 4 picture frame f1~f4 mixing
It can be increased the amendment of 2/4 GTG.If wantonly three picture frames in this 4 picture frame f1~f4, its be, for example, picture frame f1,
F2, f3, and by the grey decision-making g of this picture frame f1, f2, f3 this pixeliPlus 1 turns into gi+1.Other one picture frame f4 of others is then tieed up
Hold display grey decision-making gi.In this way, can be increased the amendment of 3/4 GTG after this 4 picture frame f1~f4 mixing.
, can in this embodiment after increase picture frame speed based on above-mentioned mechanism, although circuit is to belong to the circuit of 6
To reach effect of the correspondence in 8 circuits, the change with 256 GTGs.Because picture frame speed control circuit can increase to 256
The change of GTG, thus picture frame speed control circuit for the image to be shown, have the function with image procossing, with
Under conditions of 256 gray scale variations, the grey decision-making of pixel is corrected, is made with more rich color change.
In the present embodiment, it should be noted that the embodiment that is not limited to of foregoing picture frame speed is lifted 4 times (240Hz)
Increase, other 120Hz or 480Hz also can be according to being similarly applicable, and the resolution ratio of GTG also can similarly increase.With
And, the picture frame speed of GTG multiplication is 2L, L=1,2 ..., it therefore can be consistent with the position of GTG, and this is also all by frequency times
Frequency is produced.
However, for general, according to identical mechanism, other picture frame speeds such as 180Hz, 360Hz etc. also can
Reach, the increase of wherein frequency needs different circuits, is not only such as 120Hz or 480Hz and may achieve by frequency multiplication.
Exemplified by 180Hz and 360Hz, it is to produce 3,6 picture frames with respect to 60Hz, and the adjustment of grey decision-making is for one with 1/3,1/6
Gray scale unit is to cut to be adjusted.In addition, if ash stage circuit is originally 8 or more high-order resolution ratio, it still may be used
Using FRC circuits, increase its greyscale resolution, and be not limited to the ash stage circuit of 6.
In other words, with regard to general feature, the driving speed of FRC circuits of the invention according to driver maximum possible,
Original picture frame speed can be increased with K multiples, K is the integer more than or equal to 2.So correspond to original picture frame speed is determined one
During individual picture frame, K picture frame can be produced to data driver.The original ash of picture frame speed control circuit also to each pixel
Rank value is corrected, and it is to be increased with the original gray-scale value after a GTG to determine the picture frame for having a quantity in the K picture frame
Correct grey decision-making to show, the quantity is one of them of 0 to K-1.
It is understood that due to different broadcast formats, such as NTSC and PAL difference, its image playback rate is
50Hz, and it is suitable for 50Hz playback rate.
In summary, the present invention proposes that a secondary screen, can be only for data driver in the application of mosaic screen
Driven, can so avoided when image resolution rolls up, excessive number using one or low volume data driver
Driver occupy the situation of usable area.In addition, the actuating speed based on data driver is accelerated, by the place of FRC circuits
Reason, can more increase greyscale resolution, make the change more horn of plenty of colors of image.
In the present embodiment, by increasing the original picture frame speed with K multiples so that corresponding with the original picture frame speed
A picture frame during in, produce K picture frame to multiple data drivers so that picture frame speed control circuit is to each
One original gray-scale value of pixel is corrected, and the picture frame for having a quantity in the K picture frame is increased with the original gray-scale value
Plus the amendment grey decision-making after a GTG is shown, solving secondary screen caused by existing traditional mosaic screen needs more
The technical problem of the setting of multi-quantity driver, simultaneously, it is to avoid except being covered with secondary screen available area behind, and will cause
Can not house the technical problem of these drivers enough, and cause incomplete technical problem that radiates.
Although the present invention is disclosed above with embodiment, so it is not limited to the present invention, any art
Middle tool usually intellectual, without departing from the spirit and scope of the present invention, when a little change and retouching can be made, thus it is of the invention
Protection domain when being defined depending on the appended claims person of defining.
It is apparent to those skilled in the art that, for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, may be referred to the corresponding process in preceding method embodiment, will not be repeated here.
In several embodiments provided herein, it should be understood that disclosed system, apparatus and method can be with
Realize by another way.For example, device embodiment described above is only schematical, for example, the unit
Divide, only a kind of division of logic function there can be other dividing mode when actually realizing, such as multiple units or component
Another system can be combined or be desirably integrated into, or some features can be ignored, or do not perform.It is another, it is shown or
The coupling each other discussed or direct-coupling or communication connection can be the indirect couplings of device or unit by some interfaces
Close or communicate to connect, can be electrical, machinery or other forms.
The unit illustrated as separating component can be or may not be it is physically separate, it is aobvious as unit
The part shown can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On NE.Some or all of unit therein can be selected to realize the mesh of this embodiment scheme according to the actual needs
's.
In addition, each functional unit in each embodiment of the invention can be integrated in a processing unit, can also
That unit is individually physically present, can also two or more units it is integrated in a unit.Above-mentioned integrated list
Member can both be realized in the form of hardware, it would however also be possible to employ the form of SFU software functional unit is realized.
If the integrated unit is realized using in the form of SFU software functional unit and as independent production marketing or used
When, it can be stored in a computer read/write memory medium.Understood based on such, technical scheme is substantially
The part contributed in other words to prior art or all or part of the technical scheme can be in the form of software products
Embody, the computer software product is stored in a storage medium, including some instructions are to cause a computer
Equipment (can be personal computer, server, or network equipment etc.) performs the complete of each embodiment methods described of the invention
Portion or part steps.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can store journey
The medium of sequence code.
Described above, the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to before
Embodiment is stated the present invention is described in detail, it will be understood by those within the art that：It still can be to preceding
State the technical scheme described in each embodiment to modify, or equivalent substitution is carried out to which part technical characteristic；And these
Modification is replaced, and the essence of appropriate technical solution is departed from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (7)
1. one kind splicing screen display device, it is characterised in that including：Display screen, is spliced by multiple secondary screens；
Multiple data drivers, for driving multiple secondary screens respectively；
Picture frame speed controls circuit, according to the original picture frame speed for receiving image, with the K multiples increase original picture frame speed
Rate so that in during a picture frame corresponding with the original picture frame speed, produces K picture frame to multiple data-drivens
Device, wherein, K is the integer more than or equal to 2；
Wherein, the picture frame speed control circuit is corrected to an original gray-scale value of each pixel, and in the K picture frame
In have a quantity picture frame be that the amendment grey decision-making increased with the original gray-scale value after GTG is shown, the quantity is
One of them of 0 to K-1；
The value of the K is 2L, L is natural number；
The L values are 2, described 2LGrey decision-making produced by individual picture frame entirety be to original gray-scale value increase by 0,1/4,2/4 or
3/4 GTG degree；
Wherein, 0 represent the pixel described 2LAll shown in individual picture frame for the original gray-scale value；
1/4 represent the pixel this 2LHave that 3 picture frames show in individual picture frame for the original gray-scale value, another 1 picture frame then shows
What is shown is that the original gray-scale value adds the amendment grey decision-making after a GTG；
2/4 represents the pixel described 2LHave that 2 picture frames show in individual picture frame for the original gray-scale value, another 2 picture frames are then
Display is that the original gray-scale value adds the amendment grey decision-making after a GTG；
3/4 represents the pixel described 2LHave that 1 picture frame shows in individual picture frame for the original gray-scale value, another 3 picture frames are then
Display is that the original gray-scale value adds the amendment grey decision-making after a GTG.
2. splicing screen display device according to claim 1, it is characterised in that the splicing screen display device also includes：
One picture frame internal memory, the image is previously stored the picture frame internal memory, and according to the combination of multiple secondary screens, correspondence point
The multiple secondary screens of dispensing.
3. splicing screen display device according to claim 1, it is characterised in that the splicing screen display device also includes：
Multiple picture frame internal memories, correspond to multiple secondary screens and are configured, image maps multiple secondary screens respectively, and in advance
After distribution, those picture frame internal memories are separately stored in.
4. splicing screen display device according to claim 1, it is characterised in that the original picture frame speed be 60Hz or
50Hz, the picture frame speed of the K picture frame is 240Hz or 200Hz.
5. a kind of display drive method, is used in the splicing screen display device as described in any one in Claims 1-4, institute
Stating splicing screen display device includes display screen, multiple data drivers and picture frame speed control circuit, the display screen
Be by multiple secondary screens splicing institute into, it is characterised in that display drive method includes：
Multiple data drivers are configured, to drive multiple secondary screens respectively；
Circuit is controlled by the picture frame speed, according to the original picture frame speed for receiving image, increases described original with K multiples
Picture frame speed so that in during a picture frame corresponding with the original picture frame speed, produces K picture frame to multiple data
Driver, wherein, K is the integer more than or equal to 2；
Circuit is controlled to correct an original gray-scale value of each pixel by the picture frame speed, and in the K picture frame
In have a quantity picture frame be that the amendment grey decision-making increased with the original gray-scale value after GTG is shown, the quantity is
One of them of 0 to K-1；The K values are 2L, L is natural number；
The L values are 2, described 2LGrey decision-making produced by individual picture frame entirety be to original gray-scale value increase by 0,1/4,2/4 or
3/4 GTG degree；
Wherein, 0 represent the pixel described 2LAll shown in individual picture frame for the original gray-scale value；
1/4 represent the pixel this 2LHave that 3 picture frames show in individual picture frame for the original gray-scale value, another 1 picture frame then shows
What is shown is that the original gray-scale value adds the amendment grey decision-making after a GTG；
2/4 represents the pixel described 2LHave that 2 picture frames show in individual picture frame for the original gray-scale value, another 2 picture frames are then
Display is that the original gray-scale value adds the amendment grey decision-making after a GTG；
3/4 represents the pixel described 2LHave that 1 picture frame shows in individual picture frame for the original gray-scale value, another 3 picture frames are then
Display is that the original gray-scale value adds the amendment grey decision-making after a GTG.
6. display drive method according to claim 5, it is characterised in that the image is previously stored picture frame internal memory, and
According to the combination of multiple secondary screens, correspondence distributes to multiple secondary screens.
7. display drive method according to claim 5, it is characterised in that image maps multiple secondary screens, and in advance
After first distributing, multiple picture frame internal memories of the multiple secondary screens of correspondence are separately stored in.
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| CN201410729073.4A CN104361867B (en) | 2014-12-03 | 2014-12-03 | Splice screen display device and its display drive method |
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| CN201410729073.4A CN104361867B (en) | 2014-12-03 | 2014-12-03 | Splice screen display device and its display drive method |
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| EP1622111A1 (en) * | 2004-07-28 | 2006-02-01 | Deutsche Thomson-Brandt Gmbh | Line driver circuit for active matrix display device |
| CN101226289B (en) * | 2007-01-15 | 2010-05-19 | 钰瀚科技股份有限公司 | Multiple gamma drive method for liquid crystal display panel |
| TWI356383B (en) * | 2007-01-15 | 2012-01-11 | Chimei Innolux Corp | Liquid crystal display device and driving method t |
| KR101394926B1 (en) * | 2007-07-10 | 2014-05-15 | 엘지디스플레이 주식회사 | Expandable Display Apparatus Having Multi-Module |
| JP2011259332A (en) * | 2010-06-11 | 2011-12-22 | Sony Corp | Image processing device and method |
| CN103258508B (en) * | 2012-02-16 | 2015-09-16 | 联咏科技股份有限公司 | Method for driving liquid crystal display and display device |
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Address after: Kezhu road high tech Industrial Development Zone, Guangzhou city of Guangdong Province, No. 233 510670 Patentee after: Wei Chong group Limited by Share Ltd Address before: 510670 Guangdong city of Guangzhou province Kezhu Guangzhou high tech Industrial Development Zone, Road No. 233 Patentee before: Guangdong Weichuangshixun Science and Technology Co., Ltd. |