CN102368374A - Device for increasing resolution ratio of dot-matrix display screen and dot-matrix display screen system - Google Patents
Device for increasing resolution ratio of dot-matrix display screen and dot-matrix display screen system Download PDFInfo
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- CN102368374A CN102368374A CN2011102748687A CN201110274868A CN102368374A CN 102368374 A CN102368374 A CN 102368374A CN 2011102748687 A CN2011102748687 A CN 2011102748687A CN 201110274868 A CN201110274868 A CN 201110274868A CN 102368374 A CN102368374 A CN 102368374A
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Abstract
The invention discloses a device for increasing the resolution ratio of a dot-matrix display screen and a dot-matrix display screen system. The device comprises a spatial pixel segmenting device and a signal time synchronizing device, wherein the spatial pixel segmenting device is arranged between a dot-matrix display screen and a receiving screen; the signal time synchronizing device is connected with the dot-matrix display screen and the spatial pixel segmenting device; the spatial pixel segmenting device is used for segmenting each pixel of the dot-matrix display screen into M sub-pixels in space according to a signal of the signal time synchronizing device and periodically displaying a display image corresponding to each sub-pixel of each pixel at a corresponding position on the receiving screen; the spatial pixel segmenting device comprises a striped controllable diaphragm capable of moving in a one-dimensional manner and transmiting light at intervals and/or a louver-shaped controllable diaphragm capable of being turned over. According to the scheme disclosed by the invention, a display effect based on that each original pixel is segmented into M pixels is generated according to a vision persistence effect of human eyes, so that the resolution ratio of the dot-matrix display screen is increased, and the dot-matrix display screen is made to be suitable for being watched at near distance in indoor occasions.
Description
Technical field
The present invention relates to device that a kind of dot matrix display screen resolution improves and a kind of dot matrix display screen system.
Background technology
With the LED dot matrix display screen is example; The large area LED dot matrix display screen is widely used in the occasion that suitable high brightness such as outdoor advertising, stadium are watched at a distance at present; (filling rate refers to the ratio of pixel light-emitting area and average every pixel total area, is 3mm*3mm=9mm like every pixel total area of the LED screen of 3mm spacing because the LED dot matrix display screen exists that the pixel particle is big, filling rate is low
2) etc. problem, thereby can't use in the occasion of closely watching application scenarios, pulpit such as for example power scheduling, subway scheduling.LED dot matrix display screen producer is also making great efforts to reduce the pixel distance, still, and along with reducing of a distance; Producting process difficulty and cost also sharply increase, and can't reach practical degree, and LED dot matrix display screen pel spacing is a main flow with 10mm and 6mm at present; 3mm has accomplished in part producer; But think further to reduce again spacing as to 2mm with interior with extremely difficult, and unit display area cost rises exponentially, if will satisfy the demand of closely watching; Need spacing be controlled to 1.5mm and rise to more than 70% with interior and filling rate, the LED dot matrix display screen of prior art can't reach at all.
Summary of the invention
To the problem that exists in the above-mentioned prior art; The object of the present invention is to provide device that a kind of dot matrix display screen resolution improves and a kind of dot matrix display screen system; The resolution that it can improve dot matrix display screen makes dot matrix display screen applicable to indoor occasion of closely watching.
For achieving the above object, the present invention adopts following technical scheme:
The device that a kind of dot matrix display screen resolution improves; Comprise: be arranged on dot matrix display screen and receive the pixel space segmenting device between the screen; The signal time synchronous device that is connected with said dot matrix display screen, said pixel space segmenting device; Said pixel space segmenting device according to the signal of said signal time synchronous device with each pixel of said dot matrix display screen spatially be divided into the M subpixels, and periodically that each sub-pixel of pixel is corresponding display image show in the corresponding position that receives on the screen, but said pixel space segmenting device comprises that one dimension moves, the controlled diaphragm of striated and/or the controlled diaphragm of turnover blind shaped of printing opacity at interval.
A kind of dot matrix display screen system comprises each pixel, and the device that improves of aforesaid dot matrix display screen resolution.
Scheme according to the invention described above; It is through the pixel space segmenting device pixel of dot matrix display screen spatially to be cut apart; Make the corresponding M subpixels of an original pixel; And according to the signal of signal time synchronous device, periodically that each sub-pixel of a pixel is corresponding display image shows that in the corresponding position that receives on the screen a promptly original pixel is divided into the M subpixels and periodically shows; Because the visual persistence effect of human eye; Will produce the display effect that every original pixel is divided into M pixel, thereby improve the resolution of dot matrix display screen, make dot matrix display screen applicable to indoor occasion of closely watching.
Description of drawings
Fig. 1 is the structural representation that the present invention improves the device embodiment of dot matrix display screen resolution;
Fig. 2 is the synoptic diagram that is divided into 4 sub-cycles the original signal cycle of the present invention;
Fig. 3 is the one-piece construction synoptic diagram of apparatus of the present invention in the concrete example;
Fig. 4 is the structural representation of pixel space segmenting device embodiment one;
Fig. 5 is according to the cycle dividing mode of Fig. 21 display effect synoptic diagram constantly among the embodiment one;
Fig. 6 is according to the cycle dividing mode of Fig. 22 display effect synoptic diagram constantly among the embodiment one;
Fig. 7 is according to the cycle dividing mode of Fig. 23 display effect synoptic diagram constantly among the embodiment one;
Fig. 8 is according to the cycle dividing mode of Fig. 24 display effect synoptic diagram constantly among the embodiment one;
Fig. 9 is the synoptic diagram of the last display effect that forms in the concrete example;
Figure 10 is the structural representation of pixel space segmenting device embodiment two of the present invention;
Figure 11 is according to the cycle dividing mode of Fig. 21 display effect synoptic diagram constantly among the embodiment two;
Figure 12 is according to the cycle dividing mode of Fig. 22 display effect synoptic diagram constantly among the embodiment two;
Figure 13 is according to the cycle dividing mode of Fig. 23 display effect synoptic diagram constantly among the embodiment two;
Figure 14 is according to the cycle dividing mode of Fig. 24 display effect synoptic diagram constantly among the embodiment two;
Figure 15 is the structural representation of pixel space segmenting device embodiment three of the present invention;
Figure 16 is according to the cycle dividing mode of Fig. 21 display effect synoptic diagram constantly among the embodiment three;
Figure 17 is according to the cycle dividing mode of Fig. 22 display effect synoptic diagram constantly among the embodiment three;
Figure 18 is according to the cycle dividing mode of Fig. 23 display effect synoptic diagram constantly among the embodiment three;
Figure 19 is according to the cycle dividing mode of Fig. 24 display effect synoptic diagram constantly among the embodiment three;
Figure 20 is the structural representation of pixel space segmenting device embodiment four of the present invention;
Figure 21 is according to the cycle dividing mode of Fig. 21 display effect synoptic diagram constantly among the embodiment four;
Figure 22 is according to the cycle dividing mode of Fig. 22 display effect synoptic diagram constantly among the embodiment four;
Figure 23 is according to the cycle dividing mode of Fig. 23 display effect synoptic diagram constantly among the embodiment four;
Figure 24 is according to the cycle dividing mode of Fig. 24 display effect synoptic diagram constantly among the embodiment four.
Embodiment
Below in conjunction with specific embodiment the present invention program is set forth in detail.
The structural representation that the present invention improves the device embodiment of dot matrix display screen resolution has been shown among Fig. 1; As shown in Figure 1; The device of raising dot matrix display screen resolution of the present invention includes: signal time synchronous device, pixel space segmenting device; Wherein, The pixel space segmenting device is arranged on dot matrix display screen and receives between the screen, promptly receives after the screen, before the dot matrix display screen, and the signal time synchronous device is connected with dot matrix display screen, pixel space segmenting device; The signal time synchronous device can be arranged at after the dot matrix display screen, the pixel space segmenting device according to the signal of signal time synchronous device with each pixel of dot matrix display screen spatially be divided into the M subpixels, and periodically that each sub-pixel of a pixel is corresponding display image show in the corresponding position that receives on the screen.
Scheme according to the invention described above; It is through the pixel space segmenting device pixel of dot matrix display screen spatially to be cut apart; Make the corresponding a plurality of sub-pixels of an original pixel; And according to the signal of signal time synchronous device, periodically that each sub-pixel of a pixel is corresponding display image shows that in the corresponding position that receives on the screen a promptly original pixel is divided into the M subpixels and periodically shows; Because the visual persistence effect of human eye; Will produce the display effect that every original pixel is divided into the M subpixels, thereby improve the resolution of dot matrix display screen, make dot matrix display screen applicable to indoor occasion of closely watching.
In order to improve the visual effect of visual persistence effect, do not influence the existing display cycle, can existing signal switching frequency be increased to M doubly; And an existing display cycle is divided into the M sub-cycles; In each subcycle, show the image of corresponding sub-pixel respectively, in view of the above, the present invention program can also include the frequency-doubled signal modulator; Be used for the switching frequency of input signal is improved M doubly; Make an original signal period be divided into the M sub-cycles, in each subcycle, said pixel space segmenting device shows the content of corresponding sub-pixel according to the signal of said signal time synchronous device.Thereby not only can improve resolution, can also obtain the cycle display effect consistent with existing mode.
In view of the above; In following illustrating; Be with the signal switching frequency is increased to M doubly, a display cycle is divided into the M sub-cycles is that example describes, and need to prove this illustrating not in order to concrete implementation of the present invention and protection domain are constituted qualification.
When 1 pixel is divided into the M subpixels, can adopt the mode of rectangle lattice is cut apart, for example a pixel segmentation is become the K*L subpixels; M=K*L; K, L be not for or not 1 positive integer simultaneously, wherein, K, L represent respectively with a pixel multiplication on the line direction for K doubly, multiplication L is doubly on column direction; In order to guarantee to have improved the length and width symmetry of the image after the resolution, usually K, L are got equal values.If in order to need the viewing effect of different individual characteies, for example elongate, customized vision effect such as flattening, then K, L can get different numerical.
In addition, the display mode according to present image display periods does not have flickering in order to want the underwriter to observe picture with the aid of pictures; The frame per second of image should promptly refresh 50 pictures p.s., so more than or equal to 50Hz; In the present invention program, in order to reach the image frame per second identical with existing mode, then the switching frame per second between sub-pixel and the sub-pixel should reach 50*M; The signal switching frequency that is above-mentioned setting should reach 50*M Hz, and a subpixels of each pixel of dot matrix display screen shows to finish to the time that next sub-pixel shows and should reach 1/ (50*M) second, is example with above-mentioned K=2, L=2; Switch speed should reach 1/ (50*4)=5 millisecond; At this moment, above-mentioned one-period is equivalent to the display cycle of an existing width of cloth picture, promptly 1/50 second.Certainly, according to actual needs, if less demanding to refresh rate, flickering; Or needing the refresh rate of requirements at the higher level, corresponding switching frequency also can be done other setting, for example switching frequency is doubled; Be set to 100*M; Perhaps switching frequency is kept to half, is set to 25*M or the like, will not add to give unnecessary details at this.
Purpose from concise explanation; In the explanation of pixel doubling below; Be with total multiplication constant K=L=2 (total multiplication constant be 4) and simultaneously the switching frequency of input signal to be improved 4 times, makes an original signal period be divided into 4 sub-cycles be that example describes; The synoptic diagram that is divided into 4 sub-cycles the original signal cycle has been shown among Fig. 2; The one-piece construction synoptic diagram of apparatus of the present invention in this example has been shown among Fig. 3, and this explanation only is the exemplary illustrated that the present invention program is implemented, not in order to the present invention program is limited.
The pixel space segmenting device of the invention described above; According to actual needs various implementation can be arranged; But the for example controlled diaphragm of striated that moves of one dimension, the controlled diaphragm of turnover blind shaped etc., below just wherein several kinds of implementations be illustrated.
Embodiment one
Fig. 4 is the structural representation of pixel space segmenting device embodiment one of the present invention, shown in Figure 4 in, the pixel space segmenting device comprises two each other vertical controlled diaphragms of striated that overlap and place.
The size of supposing the former pixel of dot matrix display screen is 3 millimeters (mm), and promptly pixel size is 3mm*3mm, and M=K*L=4, and K=L=2 is increased to 4 times with the signal switching frequency of dot matrix display screen, and then each subcycle is 1/4 of a primitive period.
As shown in Figure 4, space pixel segmenting device comprises two vertical each other controlled diaphragms of striated that overlap and place.According to multiplication 2*2 multiplication mode doubly; The light transmission part of the controlled diaphragm of striated and shading light part width are 1.5mm; Diaphragm 1 is placed with the longitudinal stripe direction, and diaphragm 2 is placed with the travers direction, after diaphragm 1 one in front and one in back is stacked together with diaphragm 2; The light hole that will before every pixel, to form a size be 1.5mm * 1.5mm, remainder is light tight.Diaphragm 1 can carry out horizontal one dimension and move, and diaphragm 2 can carry out longitudinally that one dimension moves, and moves through the cooperation of diaphragm 1 and diaphragm 2, can make light hole realize that before pixel two dimension is mobile.The travel frequency of diaphragm 1 and diaphragm 2 is 2 times a sub-pixel signal display frequency, and the mobile phase of diaphragm 1 and diaphragm 2 is at a distance from a signal subspace cycle.
At first; In the 0-T/4 subcycle; Pixel A～the P of dot matrix display screen shows the picture signal of sub-pixel A1～P1 respectively; And this moment diaphragm 1 the light transmission part left side, the lightproof part that are positioned at the pixel correspondence position be positioned at the pixel right side, top, lightproof part that the light transmission part of diaphragm 2 is positioned at the pixel correspondence position are positioned at the pixel bottom, thereby form light hole in the upper left corner of pixel.Thereby the images displayed signal is through showing the image of sub-pixel A1～P1 in the dot matrix display screen in the relevant position that receives screen behind sub-pixel A1～P1.The formed display image effect of 0-T/4 subcycle synoptic diagram is as shown in Figure 5.After this subcycle demonstration finished, diaphragm 1 laterally moved the distance of 1/2 pixel left, and diaphragm 2 keeps motionless.
In the T/4-2T/4 subcycle; Pixel A～the P of dot matrix display screen shows the picture signal of sub-pixel A2～P2 respectively; And this moment diaphragm 1 the light transmission part right side, the lightproof part that are positioned at the pixel correspondence position be positioned at the pixel left side; Top, lightproof part that the light transmission part of diaphragm 2 is positioned at the pixel correspondence position are positioned at the pixel bottom, thereby form light hole in the upper right corner of pixel.Thereby the images displayed signal is through showing the image of sub-pixel A2～P2 in the dot matrix display screen in the relevant position that receives screen behind sub-pixel A2～P2.The formed display image effect of T/4-2T/4 subcycle synoptic diagram is as shown in Figure 6.After this subcycle demonstration finished, diaphragm 1 kept motionless, and diaphragm 2 upwards vertically moves the distance of 1/2 pixel.
In the 2T/4-3T/4 subcycle; Pixel A～the P of dot matrix display screen shows the picture signal of sub-pixel A3～P3 respectively; And this moment diaphragm 1 the light transmission part right side, the lightproof part that are positioned at the pixel correspondence position be positioned at the pixel left side; Bottom, lightproof part that the light transmission part of diaphragm 2 is positioned at the pixel correspondence position are positioned at pixel top, thereby form light hole in the lower right corner of pixel.Thereby the images displayed signal is through showing the image of sub-pixel A3～P3 in the dot matrix display screen in the relevant position that receives screen behind sub-pixel A3～P3.The formed display image effect of 2T/4-3T/4 subcycle synoptic diagram is as shown in Figure 7.After this subcycle demonstration finished, diaphragm 1 laterally moved the distance of 1/2 pixel to the right, and diaphragm 2 keeps motionless.
In the 3T/4-T subcycle; Pixel A～the P of dot matrix display screen shows the picture signal of sub-pixel A4～P4 respectively; And this moment diaphragm 1 the light transmission part left side, the lightproof part that are positioned at the pixel correspondence position be positioned at the pixel right side; Bottom, lightproof part that the light transmission part of diaphragm 2 is positioned at the pixel correspondence position are positioned at pixel top, thereby form light hole in the lower left corner of pixel.Thereby the images displayed signal is through showing the image of sub-pixel A4～P4 in the dot matrix display screen in the relevant position that receives screen behind sub-pixel A4～P4.The formed display image effect of 3T/4-T subcycle synoptic diagram is as shown in Figure 8.After this subcycle demonstration finished, diaphragm 1 kept motionless, and diaphragm 2 vertically moves the distance of 1/2 pixel downwards, gets back to the position of first sub-pixel of initial position, accomplishes the demonstration of one-period.
Each pixel for dot matrix display screen is all carried out so periodic division display; Because the time of each subcycle is less than the retentivity time of eye of human eye; Will form the display effect that each pixel has been divided into 4 subpixels at last, be about to resolution and improved 4 times.Fig. 9 shows the synoptic diagram according to the last display effect that forms of above-mentioned display mode.
As a kind of preferred embodiments, the light transmission part of the controlled diaphragm of striated is a transparent material, closely is connected as the lighttight part of transition and diaphragm.All finish with light tight striped on the both sides of diaphragm.This 1 pixel is divided in the mode of 4 subpixels; Diaphragm (above-mentioned diaphragm 1) for vertical placement; Light tight fringe number on the diaphragm 1 equals the quantity of dot matrix display screen one-row pixels; Printing opacity striped quantity lacks 1 than light tight striped quantity, and for the diaphragm (above-mentioned diaphragm 2) of horizontal placement, the light tight fringe number on the diaphragm 2 equals the quantity of dot matrix display screen one row pixel; Printing opacity striped quantity lacks 1 than light tight striped quantity, makes the diaphragm integral width lack 1/2 pixel wide (being 1.5mm in the present embodiment) than all pixel overall width of display screen delegation (or row)., need not shift out display screen and can reach outward when one dimension moves back and forth when diaphragm carries out laterally (or vertically) the binary effect of pixel.Two diaphragms cooperate vertical interlaced to move, and can reach LED pixel quartern effect, and diaphragm can not shift out outside the display screen.
Embodiment two
Figure 10 is the structural representation of pixel space segmenting device embodiment two of the present invention, shown in Figure 10 in, the pixel space segmenting device comprises two each other vertical controlled diaphragms of blind shaped that overlap and place.
The size of supposing the former pixel of dot matrix display screen is 3 millimeters (mm), and promptly pixel size is 3mm*3mm, and M=K*L=4, and K=L=2 is increased to 4 times with the signal switching frequency of dot matrix display screen, and then each subcycle is 1/4 of a primitive period.
Shown in figure 10, the space pixel segmenting device in the present embodiment comprises two vertical each other controlled diaphragms realizations of venetian blind type that overlap and place.According to multiplication 2*2 multiplication mode doubly, the width of the shading leaf of the controlled diaphragm of venetian blind type is 1.5mm, and the spacing of two shading leaves is 3mm, and turning axle is equipped with on the long limit of shading leaf one end, is connected on the diaphragm framework.The shading leaf can about the upset of (or up and down) 180 degree, when it turn to a side fully, be equivalent to the diaphragm of striated, its light transmission part and shading light part width are 1.5mm.Diaphragm 1 is placed with vertical window leaf direction, and diaphragm 2 is placed with horizontal window leaf direction, and diaphragm 1 will form a light hole that size is 1.5mm * 1.5mm after one in front and one in back being stacked together with diaphragm 2 before each pixel, and remainder is light tight.The window leaf of diaphragm 1 can carry out 180 horizontal degree upsets, and the window leaf of diaphragm 2 can carry out 180 degree upsets longitudinally, through the cooperation of diaphragm 1 and diaphragm 2, can make light hole realize that before the LED pixel two dimension moves.The toggle frequency of diaphragm 1 and diaphragm 2 is 2 times a sub-pixel signal display frequency, and diaphragm 1 is separated by a signal subspace cycle with the upset of diaphragm 2.
At first; In the 0-T/4 subcycle; Pixel A～the P of dot matrix display screen shows the picture signal of sub-pixel A1～P1 respectively; And this moment diaphragm 1 the light transmission part left side, the lightproof part that are positioned at the pixel correspondence position be positioned at the pixel right side, top, lightproof part that the light transmission part of diaphragm 2 is positioned at the pixel correspondence position are positioned at the pixel bottom, thereby form light hole in the upper left corner of pixel.Thereby the images displayed signal is through showing the image of sub-pixel A1～P1 in the dot matrix display screen in the relevant position that receives screen behind sub-pixel A1～P1.The formed display image effect of 0-T/4 subcycle synoptic diagram is shown in figure 11.After this subcycle demonstration finished, each shading leaf of diaphragm 1 turned over turnback to the left, and diaphragm 2 keeps motionless.
In the T/4-2T/4 subcycle; Pixel A～the P of dot matrix display screen shows the picture signal of sub-pixel A2～P2 respectively; And this moment diaphragm 1 the light transmission part right side, the lightproof part that are positioned at the pixel correspondence position be positioned at the pixel left side; Top, lightproof part that the light transmission part of diaphragm 2 is positioned at the pixel correspondence position are positioned at the pixel bottom, thereby form light hole in the upper right corner of pixel.Thereby the images displayed signal is through showing the image of sub-pixel A2～P2 in the dot matrix display screen in the relevant position that receives screen behind sub-pixel A2～P2.The formed display image effect of T/4-2T/4 subcycle synoptic diagram is shown in figure 12.After this subcycle demonstration finished, diaphragm 1 kept motionless, and each shading leaf of diaphragm 2 upwards turns over turnback.
In the 2T/4-3T/4 subcycle; Pixel A～the P of dot matrix display screen shows the picture signal of sub-pixel A3～P3 respectively; And this moment diaphragm 1 the light transmission part right side, the lightproof part that are positioned at the pixel correspondence position be positioned at the pixel left side; Bottom, lightproof part that the light transmission part of diaphragm 2 is positioned at the pixel correspondence position are positioned at pixel top, thereby form light hole in the lower right corner of pixel.Thereby the images displayed signal is through showing the image of sub-pixel A3～P3 in the dot matrix display screen in the relevant position that receives screen behind sub-pixel A3～P3.The formed display image effect of 2T/4-3T/4 subcycle synoptic diagram is shown in figure 13.After this subcycle demonstration finished, each shading leaf of diaphragm 1 turned over turnback to the right, and diaphragm 2 keeps motionless.
In the 3T/4-T subcycle; Pixel A～the P of dot matrix display screen shows the picture signal of sub-pixel A4～P4 respectively; And this moment diaphragm 1 the light transmission part left side, the lightproof part that are positioned at the pixel correspondence position be positioned at the pixel right side, bottom, lightproof part that the light transmission part of diaphragm 2 is positioned at the pixel correspondence position are positioned at pixel top thereby form light hole in the lower left corner of pixel.Thereby the images displayed signal is through showing the image of sub-pixel A4～P4 in the dot matrix display screen in the relevant position that receives screen behind sub-pixel A4～P4.The formed display image effect of 3T/4-T subcycle synoptic diagram is shown in figure 14.This subcycle show finish after, diaphragm 1 keeps motionless, each shading leaf of diaphragm 2 turnback of turning on one's side is downwards got back to the position of first sub-pixel of initial position, accomplishes the demonstration of one-period.
All carry out such periodicity for each pixel of dot matrix display screen and show,, be about to resolution and improved 4 times because the time of each subcycle less than the retentivity time of eye of human eye, will form the display effect that each pixel has been divided into 4 subpixels at last.Fig. 9 shows the synoptic diagram according to the last display effect that forms of above-mentioned display mode.
In the scheme of present embodiment, need not diaphragm is done any moving, only need to rotate the effect that the shading leaf can reach the image pixel multiplication, but because the upset of shading leaf needs certain space, thereby need certain screen thickness can be effective and purpose.
Embodiment three
Figure 15 is the structural representation of pixel space segmenting device embodiment three of the present invention, and in the present embodiment, the pixel segmentation device is the hybrid-type controlled diaphragm of striated and blind shaped.
The size of supposing the former pixel of dot matrix display screen is 3 millimeters (mm), and promptly pixel size is 3mm*3mm, and M=K*L=4, and K=L=2 is increased to 4 times with the signal switching frequency of dot matrix display screen, and then each subcycle is 1/4 of a primitive period.
Space pixel segmenting device shown in Figure 15 is vertically to be the controlled diaphragm of striated, laterally to be that the controlled diaphragm of venetian blind type is that example describes.According to multiplication 2*2 multiplication mode doubly; The light transmission part and the lightproof part width of the controlled diaphragm of longitudinal stripe shape are 1.5mm; The shading leaf width of the horizontal controlled diaphragm of venetian blind type is 1.5mm, and the fore-and-aft distance between two shading leaves is 3mm, and the shading leaf wherein is equipped with turning axle on the horizontal edge; Be connected on the diaphragm framework 180 degree upsets up and down.When the shading leaf that diaphragm is horizontal is translated into downside fully, cooperate with bar shaped shading face longitudinally, will before each pixel, form a light hole that size is 1.5mm * 1.5mm, remainder is light tight.Through diaphragm whole one dimension move left and right and the upset of 180 degree up and down of shading leaf, can realize that the two dimension of light hole moves.The frequency that frequency that the diaphragm one dimension moves and shading leaf spin upside down is 2 times sub-pixel signal display frequency, and the one dimension of diaphragm moves with spinning upside down of shading leaf and is separated by a signal subspace cycle.
At first, in the 0-T/4 subcycle, the pixel A～P of dot matrix display screen shows the picture signal of sub-pixel A1～P1 respectively, and the light transmission part of diaphragm is positioned at the upper left corner of pixel correspondence position at this moment, thereby forms light hole in the upper left corner of pixel.The images displayed signal is through showing the image of sub-pixel A1～P1 in the dot matrix display screen in the relevant position that receives screen behind sub-pixel A1～P1.The formed display image effect of 0-T/4 subcycle synoptic diagram is shown in figure 16.After this subcycle demonstration finished, the diaphragm integral left moved the distance of 1/2 pixel (being 1.5mm in this example).
In the T/4-2T/4 subcycle; Pixel A～the P of dot matrix display screen shows the picture signal of sub-pixel A2～P2 respectively; And this moment diaphragm the light transmission part be positioned at the upper right corner of pixel correspondence position, thereby form light hole in the upper right corner of pixel and in the dot matrix display screen images displayed signal show the image of sub-pixel A2～P2 after through sub-pixel A2～P2 in the relevant position that receives screen.The formed display image effect of T/4-2T/4 subcycle synoptic diagram is shown in figure 17.After this subcycle demonstration finished, each shading leaf of diaphragm upwards turned over turnback.
In the 2T/4-3T/4 subcycle, the pixel A～P of dot matrix display screen shows the picture signal of sub-pixel A3～P3 respectively, and the light transmission part of diaphragm is positioned at the lower right corner of pixel correspondence position at this moment, thereby forms light hole in the lower right corner of pixel.The images displayed signal is through showing the image of sub-pixel A3～P3 in the dot matrix display screen in the relevant position that receives screen behind sub-pixel A3～P3.The formed display image effect of 2T/4-3T/4 subcycle synoptic diagram is shown in figure 18.This subcycle show finish after, the move right distance of 1/2 pixel of diaphragm integral body.
In the 3T/4-T subcycle, the pixel A～P of dot matrix display screen shows the picture signal of sub-pixel A4～P4 respectively, and the light transmission part of diaphragm is positioned at the lower left corner of pixel correspondence position at this moment, thereby forms light hole in the lower left corner of pixel.The images displayed signal is through showing the image of sub-pixel A4～P4 in the dot matrix display screen in the relevant position that receives screen behind sub-pixel A4～P4.The formed display image effect of 3T/4-T subcycle synoptic diagram is shown in figure 19.This subcycle show finish after, the shading leaf of the diaphragm turnback of turning on one's side is downwards got back to the position of first sub-pixel of initial position, accomplishes the demonstration of one-period.
All carry out such periodicity for every pixel of dot matrix display screen and show,, be about to resolution and improved 4 times because the time of each subcycle less than the retentivity time of eye of human eye, will form the display effect that each pixel has been divided into 4 subpixels at last.Fig. 9 shows the synoptic diagram according to the last display effect that forms of above-mentioned display mode.
In the scheme of present embodiment; Owing to only adopt a diaphragm (striated and blind shaped mix); Thereby can reduce the thickness of screen to a certain extent, and the mobile upset adjustment that adds the shading leaf that can need only that diaphragm carries out one dimension can realize the effect of image pixel multiplication.
Embodiment four
Figure 20 is the structural representation of pixel space segmenting device embodiment four of the present invention, and in the present embodiment, the pixel segmentation device is the controlled diaphragm of rotary switch formula.
The size of supposing the former pixel of dot matrix display screen is 3 millimeters (mm), and promptly pixel size is 3mm*3mm, and M=K*L=4, and K=L=2 is increased to 4 times with the signal switching frequency of dot matrix display screen, and then each subcycle is 1/4 of a primitive period.
Space pixel segmenting device shown in Figure 20 is that the controlled diaphragm with the rotary switch formula is that example describes, and diaphragm is split into a plurality of wickets, and each wicket is corresponding with a subpixels.According to multiplication 2*2 multiplication mode doubly, each window size is 1.5mm*1.5mm, is provided with the shading leaf of 1.5mm * 1.5mm size in the window, Yi Bian the shading leaf can or wherein carry out 90 degree rotations around central authorities, reaches the effect of window switch.According to actual needs, Yi Bian can perhaps wherein be provided with turning axle in the central authorities of shading leaf.When the shading leaf did not rotate, this wicket was closed, and this wicket is light tight; When the shading leaf revolves when turning 90 degrees, wicket is opened, the wicket printing opacity.
In the 0-T/4 subcycle; Pixel A～the P of dot matrix display screen shows the picture signal of sub-pixel A1～P1 respectively; And the wicket that is positioned at the upper left corner in corresponding four wickets of each pixel this moment is opened; Other wicket is closed, thereby the images displayed signal is through receiving the hot spot that forms sub-pixel A1～P1 on the screen behind the diaphragm in the dot matrix display screen.The formed display image effect of 0-T/4 subcycle synoptic diagram is shown in figure 21.
In the T/4-2T/4 subcycle; Pixel A～the P of dot matrix display screen shows the picture signal of sub-pixel A2～P2 respectively; And the wicket that is positioned at the upper right corner in corresponding four wickets of each pixel this moment is opened; Other wicket is closed, thereby the images displayed signal is through receiving the hot spot that forms sub-pixel A2～P2 on the screen behind the diaphragm in the dot matrix display screen.The formed display image effect of T/4-2T/4 subcycle synoptic diagram is shown in figure 22.
In the 2T/4-3T/4 subcycle; Pixel A～the P of dot matrix display screen shows the picture signal of sub-pixel A3～P3 respectively; And the wicket that is positioned at the lower right corner in corresponding four wickets of each pixel this moment is opened; Other wicket is closed, thereby the images displayed signal is through receiving the hot spot that forms sub-pixel A3～P3 on the screen behind the diaphragm in the dot matrix display screen.The formed display image effect of 2T/4-3T/4 subcycle synoptic diagram is shown in figure 23.
In the 3T/4-T subcycle; Pixel A～the P of dot matrix display screen shows the picture signal of sub-pixel A4～P4 respectively; And the wicket that is positioned at the lower left corner in corresponding four wickets of each pixel this moment is opened; Other wicket is closed, thereby the images displayed signal is through receiving the hot spot that forms sub-pixel A4～P4 on the screen behind the diaphragm in the dot matrix display screen.The formed display image effect of 3T/4-T subcycle synoptic diagram is shown in figure 24.So far accomplish the demonstration of one-period.
All carry out such periodicity for a pixel of dot matrix display screen and show,, be about to resolution and improved 4 times because the time of each subcycle less than the retentivity time of eye of human eye, will form the display effect that every pixel has been divided into 4 subpixels at last.Fig. 9 shows the synoptic diagram according to the last display effect that forms of above-mentioned display mode.
Above-mentionedly only wherein several kinds of preferred embodiments of the present invention are specified; Basic thought based on the invention described above; Those skilled in the art can produce the various concrete implementations of deriving; For example can striated diaphragm and window shutter dress diaphragm not mixed in the foregoing description three; But two parts that conduct separates realize the effect of pixel doubling, perhaps adopt other mobile, upset mode to realize pixel doubling or the like, and these derivatives should all be comprised within the disclosed scope of the present invention program.
The applied dot matrix display screen of the invention described above scheme; Can be LED dot matrix display screen, OLED dot matrix display screen or other dot matrix display screens that shows through the some array mode; According to actual needs, the invention described above scheme can be applicable to any dot matrix display screen, will not add to give unnecessary details at this.
According to the device that the dot matrix display screen resolution of the invention described above improves, the present invention also provides a kind of dot matrix display screen system, and it comprises each pixel, and the device that improves of aforesaid dot matrix display screen resolution, does not repeat them here.
Above-described embodiment of the present invention only is the detailed description to preferred embodiment of the present invention, does not constitute the qualification to protection domain of the present invention.Any modification of within spirit of the present invention and principle, being done, be equal to replacement and improvement etc., all should be included within the claim protection domain of the present invention.
Claims (10)
1. the device that improves of a dot matrix display screen resolution; It is characterized in that; Comprise: be arranged on dot matrix display screen and receive the pixel space segmenting device between the screen; The signal time synchronous device that is connected with said dot matrix display screen, said pixel space segmenting device; Said pixel space segmenting device according to the signal of said signal time synchronous device with each pixel of said dot matrix display screen spatially be divided into the M subpixels, and periodically that each sub-pixel of pixel is corresponding display image show in the corresponding position that receives on the screen, but said pixel space segmenting device comprises that one dimension moves, the controlled diaphragm of striated and/or the controlled diaphragm of turnover blind shaped of printing opacity at interval.
2. the device that dot matrix display screen resolution according to claim 1 improves; It is characterized in that; Also comprise the frequency-doubled signal modulator, be used for the switching frequency of input signal is improved M doubly, make an original signal period be divided into the M sub-cycles; In each subcycle, said pixel space segmenting device shows the content of corresponding sub-pixel according to the signal of said signal time synchronous device.
3. the device that dot matrix display screen resolution according to claim 1 and 2 improves; It is characterized in that; Said pixel space segmenting device comprises the each other vertical controlled diaphragm of said striated that overlaps and place, and the controlled diaphragm of said striated carries out one dimension according to the signal of said signal time synchronous device and moves.
4. the device that dot matrix display screen resolution according to claim 1 and 2 improves; It is characterized in that; Said pixel space segmenting device comprises the vertical each other controlled diaphragm of turnover blind shaped that overlaps and place, and the controlled diaphragm of said blind shaped carries out the one dimension upset according to the signal of said signal time synchronous device.
5. the device that dot matrix display screen resolution according to claim 1 and 2 improves; It is characterized in that; A controlled diaphragm of striated, the controlled diaphragm of blind shaped of being provided with before and after said pixel space segmenting device comprises; The controlled diaphragm of said striated carries out one dimension according to the signal of said signal time synchronous device and moves, and the controlled diaphragm of said blind shaped carries out the one dimension upset according to the signal of said signal time synchronous device.
6. the device that dot matrix display screen resolution according to claim 5 improves is characterized in that the controlled light valve of said blind shaped is arranged on the controlled light valve of said striated.
7. the device that dot matrix display screen resolution according to claim 1 and 2 improves; It is characterized in that; Said pixel space segmenting device comprises the controlled diaphragm array of rotary switch formula; M rotary switch formula controllable light valve array is corresponding with a pixel, and the controlled diaphragm of said rotary switch formula is rotated according to the signal of said signal time synchronous device and controls opening closed condition and whether passing through with control light of window.
8. according to any device that described dot matrix display screen resolution improves of claim 1 to 7; It is characterized in that, M=K*L, K, L be not for or not 1 positive integer simultaneously; It is K times that K representes a pixel is doubled on line direction, and L representes a pixel is doubled L times on column direction.
9. according to any device that described dot matrix display screen resolution improves of claim 1 to 8, it is characterized in that said dot matrix display screen is LED dot matrix display screen or OLED dot matrix display screen.
10. a dot matrix display screen system comprises each pixel, it is characterized in that, also comprises like any device that described dot matrix display screen resolution improves of claim 1 to 9.
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