CN102368374B - 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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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 and a kind of dot matrix display screen system that a kind of dot matrix display screen resolution improves.
Background technology
Take the LED dot matrix display screen as example, the large area LED dot matrix display screen is widely used in the occasion that the applicable high brightness such as outdoor advertising, stadium are watched at a distance at present, because the LED dot matrix display screen exists that the pixel particle is large, filling rate is low, (filling rate refers to the ratio of pixel light-emitting area and average every pixel total area, as every pixel total area of the LED screen of 3mm spacing is 3mm*3mm=9mm
2) etc. problem, thereby can't use in the occasion of closely watching application scenarios, pulpit such as power scheduling, subway scheduling.LED dot matrix display screen producer is also making great efforts to reduce the pixel distance, but, along with reducing of a distance, producting process difficulty and cost also sharply increase, can't reach practical degree, at present to take 10mm and 6mm be main flow to LED dot matrix display screen pel spacing, 3mm has accomplished in part producer, but think further to reduce again spacing as to 2mm with interior by extremely difficult, and unit display area cost rises exponentially, if meet the demand of closely watching, spacing need to be controlled to 1.5mm rises 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
For above-mentioned problems of the prior art, the device and a kind of dot matrix display screen system that the object of the present invention is to provide a kind of dot matrix display screen resolution to improve, the resolution that it can improve dot matrix display screen, make dot matrix display screen applicable to indoor occasion of closely watching.
For achieving the above object, the present invention by the following technical solutions:
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 screen, with described dot matrix display screen, the signal time synchronous device that described pixel space segmenting device connects, described pixel space segmenting device spatially is divided into M sub-pixel according to the signal of described signal time synchronous device by each pixel of described dot matrix display screen, and periodically by each sub-pixel of pixel, corresponding demonstration image shows in the corresponding position received on screen, but described pixel space segmenting device comprises one-dimensional movement, the controlled diaphragm of the striated of interval printing opacity and/or the controlled diaphragm of turnover blind shaped.
A kind of dot matrix display screen system, comprise each pixel, and the device of dot matrix display screen resolution as above raising.
Scheme according to the invention described above, it is spatially cut apart the pixel of dot matrix display screen by the pixel space segmenting device, make corresponding M the sub-pixel of an original pixel, and according to the signal of signal time synchronous device, periodically by each sub-pixel of a pixel, corresponding demonstration image shows in the corresponding position received on screen, be that an original pixel is divided into being shown of M subpixel period, visual persistence effect due to 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.
The accompanying drawing explanation
Fig. 1 is the structural representation that the present invention improves the device embodiment of dot matrix display screen resolution;
Fig. 2 is the schematic diagram that is divided into to 4 subcycles the original signal cycle of the present invention;
Fig. 3 is the one-piece construction schematic diagram of apparatus of the present invention in a concrete example;
Fig. 4 is the structural representation of pixel space segmenting device embodiment mono-;
Fig. 5 is according to the cycle dividing mode of Fig. 21 display effect schematic diagram constantly in embodiment mono-;
Fig. 6 is according to the cycle dividing mode of Fig. 22 display effect schematic diagram constantly in embodiment mono-;
Fig. 7 is according to the cycle dividing mode of Fig. 23 display effect schematic diagram constantly in embodiment mono-;
Fig. 8 is according to the cycle dividing mode of Fig. 24 display effect schematic diagram constantly in embodiment mono-;
Fig. 9 is the schematic diagram of the last display effect formed in a concrete example;
Figure 10 is the structural representation of pixel space segmenting device embodiment bis-of the present invention;
Figure 11 is according to the cycle dividing mode of Fig. 21 display effect schematic diagram constantly in embodiment bis-;
Figure 12 is according to the cycle dividing mode of Fig. 22 display effect schematic diagram constantly in embodiment bis-;
Figure 13 is according to the cycle dividing mode of Fig. 23 display effect schematic diagram constantly in embodiment bis-;
Figure 14 is according to the cycle dividing mode of Fig. 24 display effect schematic diagram constantly in embodiment bis-;
Figure 15 is the structural representation of pixel space segmenting device embodiment tri-of the present invention;
Figure 16 is according to the cycle dividing mode of Fig. 21 display effect schematic diagram constantly in embodiment tri-;
Figure 17 is according to the cycle dividing mode of Fig. 22 display effect schematic diagram constantly in embodiment tri-;
Figure 18 is according to the cycle dividing mode of Fig. 23 display effect schematic diagram constantly in embodiment tri-;
Figure 19 is according to the cycle dividing mode of Fig. 24 display effect schematic diagram constantly in embodiment tri-;
Figure 20 is the structural representation of pixel space segmenting device embodiment tetra-of the present invention;
Figure 21 is according to the cycle dividing mode of Fig. 21 display effect schematic diagram constantly in embodiment tetra-;
Figure 22 is according to the cycle dividing mode of Fig. 22 display effect schematic diagram constantly in embodiment tetra-;
Figure 23 is according to the cycle dividing mode of Fig. 23 display effect schematic diagram constantly in embodiment tetra-;
Figure 24 is according to the cycle dividing mode of Fig. 24 display effect schematic diagram constantly in embodiment tetra-.
Embodiment
Below in conjunction with specific embodiment, the present invention program is described in detail.
The structural representation that the present invention improves the device embodiment of dot matrix display screen resolution has been shown in Fig. 1, as shown in Figure 1, the device of raising dot matrix display screen resolution of the present invention includes: the signal time synchronous device, the pixel space segmenting device, wherein, the pixel space segmenting device is arranged on dot matrix display screen and receives between screen, after receiving screen, before dot matrix display screen, signal time synchronous device and dot matrix display screen, the pixel space segmenting device connects, after the signal time synchronous device can be arranged at dot matrix display screen, the pixel space segmenting device spatially is divided into M sub-pixel according to the signal of signal time synchronous device by each pixel of dot matrix display screen, and periodically by each sub-pixel of a pixel, corresponding demonstration image shows in the corresponding position received on screen.
Scheme according to the invention described above, it is spatially cut apart the pixel of dot matrix display screen by the pixel space segmenting device, make the corresponding a plurality of sub-pixels of an original pixel, and according to the signal of signal time synchronous device, periodically by each sub-pixel of a pixel, corresponding demonstration image shows in the corresponding position received on screen, be that an original pixel is divided into being shown of M subpixel period, visual persistence effect due to human eye, will produce the display effect that every original pixel is divided into M sub-pixel, 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 affect the existing display cycle, existing signal switching frequency can be increased to M doubly, and an existing display cycle is divided into to M subcycle, show respectively the image of corresponding sub-pixel in each subcycle, accordingly, the present invention program can also include the frequency-doubled signal modulator, for the switching frequency of input signal is improved to M doubly, make an original signal period be divided into M subcycle, in each subcycle, described pixel space segmenting device shows the content of corresponding sub-pixel according to the signal of described signal time synchronous device.Thereby not only can improve resolution, can also obtain the cycle display effect consistent with existing mode.
Accordingly; in following illustrating; be to take the signal switching frequency is increased to M times, a display cycle is divided into to M subcycle as example describes, it should be noted that, this illustrating not in order to specific implementation of the present invention and protection domain are formed to restriction.
When 1 pixel is divided into to M sub-pixel, can adopt the mode of rectangular divided is cut apart, for example a pixel segmentation is become to K*L sub-pixel, M=K*L, K, L are 1 positive integer when different, and wherein, K, L represent respectively a pixel is gone up in the row direction and doubly increases to 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 resolution, usually K, L are got to identical value.If for needs have the viewing effect of different individual characteies, customized vision effects such as elongation, flattening, K, L can get different numerical value.
In addition, display mode according to present image display periods, there is no flickering in order to want the underwriter to observe picture with the aid of pictures, the frame per second of image should be more than or equal to 50Hz, be to refresh 50 pictures p.s., so, in the present invention program, in order to reach the image frame per second identical with existing mode, the switching frame per second between sub-pixel and sub-pixel should reach 50*M, the signal switching frequency that is above-mentioned setting should reach 50*M Hz, a sub-pixel of each pixel of dot matrix display screen shows that the complete time shown to next sub-pixel should reach 1/ (50*M) second, with above-mentioned K=2, L=2 is example, switch speed should reach 1/ (50*4)=5 millisecond, now, above-mentioned one-period is equivalent to the display cycle of an existing width picture, 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 etc., will not add to repeat at this.
Purpose for concise explanation, in the explanation of pixel doubling below, to take total multiplication constant K=L=2 (total multiplication constant be 4) and the switching frequency of input signal improved to 4 times simultaneously, make an original signal period be divided into 4 subcycles to describe as example, the schematic diagram that is divided into to 4 subcycles the original signal cycle has been shown in Fig. 2, the one-piece construction schematic diagram of apparatus of the present invention in this example has been shown in Fig. 3, this explanation is only 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 such as the controlled diaphragm of the striated of one-dimensional movement, the controlled diaphragm of turnover blind shaped etc., below just several implementations wherein be illustrated.
Embodiment mono-
Fig. 4 is the structural representation of pixel space segmenting device embodiment mono-of the present invention, shown in Fig. 4 in, the pixel space segmenting device comprises the controlled diaphragm of the striated of two mutual vertical overlapping placements.
The size of supposing the former pixel of dot matrix display screen is 3 millimeters (mm), and pixel size is 3mm*3mm, and M=K*L=4, and K=L=2 is increased to 4 times by the signal switching frequency of dot matrix display screen, and each subcycle is primitive period 1/4.
As shown in Figure 4, pixel segmenting device in space comprises the controlled diaphragm of striated of two mutual vertical overlapping placements.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, diaphragm 2 is placed with the travers direction, after diaphragm 1 one in front and one in back is stacked together with diaphragm 2, to form the light hole that a size is 1.5mm * 1.5mm before every pixel, remainder is light tight.Diaphragm 1 can carry out horizontal one-dimensional movement, and diaphragm 2 can carry out one-dimensional movement longitudinally, through the cooperation of diaphragm 1 and diaphragm 2, moves, and can make light hole realize two-dimensional movement before pixel.The sub-pixel signal display frequency that the travel frequency of diaphragm 1 and diaphragm 2 is 2 times, and diaphragm 1 is separated by a signal subspace cycle with the movement of diaphragm 2.
At first, in the 0-T/4 subcycle, pixel A～the P of dot matrix display screen shows respectively the picture signal of sub-pixel A1～P1, and left side, lightproof part that now the light transmission part of diaphragm 1 is positioned at the pixel correspondence position are 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 picture signal shown in dot matrix display screen shows the image of sub-pixel A1～P1 after sub-pixel A1～P1 in the relevant position that receives screen.The formed demonstration image effect of 0-T/4 subcycle schematic diagram as shown in Figure 5.After this subcycle demonstration is complete, diaphragm 1 is the distance of 1/2 pixel of transverse shifting left, and diaphragm 2 keeps motionless.
In the T/4-2T/4 subcycle, pixel A～the P of dot matrix display screen shows respectively the picture signal of sub-pixel A2～P2, and right side, lightproof part that now the light transmission part of diaphragm 1 is positioned at the pixel correspondence position are 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 picture signal shown in dot matrix display screen shows the image of sub-pixel A2～P2 after sub-pixel A2～P2 in the relevant position that receives screen.The formed demonstration image effect of T/4-2T/4 subcycle schematic diagram as shown in Figure 6.After this subcycle demonstration is complete, diaphragm 1 keeps 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 respectively the picture signal of sub-pixel A3～P3, and right side, lightproof part that now the light transmission part of diaphragm 1 is positioned at the pixel correspondence position are 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 picture signal shown in dot matrix display screen shows the image of sub-pixel A3～P3 after sub-pixel A3～P3 in the relevant position that receives screen.The formed demonstration image effect of 2T/4-3T/4 subcycle schematic diagram as shown in Figure 7.After this subcycle demonstration is complete, diaphragm 1 is the distance of 1/2 pixel of transverse shifting to the right, and diaphragm 2 keeps motionless.
In the 3T/4-T subcycle, pixel A～the P of dot matrix display screen shows respectively the picture signal of sub-pixel A4～P4, and left side, lightproof part that now the light transmission part of diaphragm 1 is positioned at the pixel correspondence position are 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 picture signal shown in dot matrix display screen shows the image of sub-pixel A4～P4 after sub-pixel A4～P4 in the relevant position that receives screen.The formed demonstration image effect of 3T/4-T subcycle schematic diagram as shown in Figure 8.After this subcycle demonstration is complete, diaphragm 1 keeps 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, completes the demonstration of one-period.
Each pixel for dot matrix display screen is carried out the periodic like this demonstration of cutting apart, because time of each subcycle is less than retentivity time of eye of human eye, finally will form the display effect that each pixel has been divided into 4 sub-pixels, be about to resolution and improved 4 times.Fig. 9 shows the schematic diagram according to the last display effect formed of above-mentioned display mode.
As a kind of better embodiment, the light transmission part of the controlled diaphragm of striated is transparent material, as the lighttight part of transition and diaphragm, closely is connected.All finish with light tight striped on the both sides of diaphragm.This 1 pixel is divided into to the mode of 4 sub-pixels, diaphragm (above-mentioned diaphragm 1) for vertical placement, light tight fringe number on diaphragm 1 equals the quantity of dot matrix display screen one-row pixels, printing opacity striped quantity is than light tight striped quantity few 1, diaphragm (above-mentioned diaphragm 2) for horizontal placement, light tight fringe number on diaphragm 2 equals the quantity of dot matrix display screen one row pixel, printing opacity striped quantity is than light tight striped quantity few 1, make the diaphragm integral width than display screen a line (or row) few 1/2 pixel wide of all pixel overall width (being 1.5mm in the present embodiment).When diaphragm carries out laterally (or vertically) back and forth during one-dimensional movement, do not need to shift out display screen and can reach outward the binary effect of pixel.Two diaphragms coordinate vertical interlaced to move, and can reach LED pixel quartern effect, and diaphragm can not shift out outside display screen.
Embodiment bis-
Figure 10 is the structural representation of pixel space segmenting device embodiment bis-of the present invention, shown in Figure 10 in, the pixel space segmenting device comprises the controlled diaphragm of the blind shaped of two mutual vertical overlapping placements.
The size of supposing the former pixel of dot matrix display screen is 3 millimeters (mm), and pixel size is 3mm*3mm, and M=K*L=4, and K=L=2 is increased to 4 times by the signal switching frequency of dot matrix display screen, and each subcycle is primitive period 1/4.
As shown in figure 10, the space pixel segmenting device in the present embodiment comprises the controlled diaphragm realization of venetian blind type of two mutual vertical overlapping placements.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 overturn by left and right (or upper and lower) 180 degree, when it turn to a side fully, is equivalent to the diaphragm of striated, and 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, and the cooperation through diaphragm 1 and diaphragm 2, can make light hole realize two-dimensional movement before the LED pixel.The sub-pixel signal display frequency that the toggle frequency of diaphragm 1 and diaphragm 2 is 2 times, 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 respectively the picture signal of sub-pixel A1～P1, and left side, lightproof part that now the light transmission part of diaphragm 1 is positioned at the pixel correspondence position are 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 picture signal shown in dot matrix display screen shows the image of sub-pixel A1～P1 after sub-pixel A1～P1 in the relevant position that receives screen.The formed demonstration image effect of 0-T/4 subcycle schematic diagram as shown in figure 11.After this subcycle demonstration is complete, each shading leaf of diaphragm 1 turns 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 respectively the picture signal of sub-pixel A2～P2, and right side, lightproof part that now the light transmission part of diaphragm 1 is positioned at the pixel correspondence position are 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 picture signal shown in dot matrix display screen shows the image of sub-pixel A2～P2 after sub-pixel A2～P2 in the relevant position that receives screen.The formed demonstration image effect of T/4-2T/4 subcycle schematic diagram as shown in figure 12.After this subcycle demonstration is complete, diaphragm 1 keeps 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 respectively the picture signal of sub-pixel A3～P3, and right side, lightproof part that now the light transmission part of diaphragm 1 is positioned at the pixel correspondence position are 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 picture signal shown in dot matrix display screen shows the image of sub-pixel A3～P3 after sub-pixel A3～P3 in the relevant position that receives screen.The formed demonstration image effect of 2T/4-3T/4 subcycle schematic diagram as shown in figure 13.After this subcycle demonstration is complete, each shading leaf of diaphragm 1 turns 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 respectively the picture signal of sub-pixel A4～P4, and left side, lightproof part that now the light transmission part of diaphragm 1 is positioned at the pixel correspondence position are 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 picture signal shown in dot matrix display screen shows the image of sub-pixel A4～P4 after sub-pixel A4～P4 in the relevant position that receives screen.The formed demonstration image effect of 3T/4-T subcycle schematic diagram as shown in figure 14.This subcycle show complete 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, completes the demonstration of one-period.
Carry out such periodicity for each pixel of dot matrix display screen and show, because time of each subcycle is less than retentivity time of eye of human eye, finally will form the display effect that each pixel has been divided into 4 sub-pixels, be about to resolution and improved 4 times.Fig. 9 shows the schematic diagram according to the last display effect formed of above-mentioned display mode.
In the scheme of the present embodiment, without diaphragm being done to any movement, 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 tri-
Figure 15 is the structural representation of pixel space segmenting device embodiment tri-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 pixel size is 3mm*3mm, and M=K*L=4, and K=L=2 is increased to 4 times by the signal switching frequency of dot matrix display screen, and each subcycle is primitive period 1/4.
Space pixel segmenting device shown in Figure 15 is to take vertically as the controlled diaphragm of striated, laterally describe as the controlled diaphragm of venetian blind type as example.According to multiplication 2*2 multiplication mode doubly, 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, fore-and-aft distance between two shading leaves is 3mm, the shading leaf wherein is equipped with turning axle on a horizontal edge, be connected on the diaphragm framework, can upper and lower 180 degree upsets.Translate into downside fully when the shading leaf that diaphragm is horizontal, coordinate with bar shaped shading surface longitudinally, will form a light hole that size is 1.5mm * 1.5mm before each pixel, remainder is light tight.By the upset that one dimension moves left and right and shading leaf upper and lower 180 is spent of diaphragm integral body, can realize the two-dimensional movement of light hole.The frequency that the frequency of diaphragm one-dimensional movement and shading leaf spin upside down is the sub-pixel signal display frequency of 2 times, and the one-dimensional movement of diaphragm and shading leaf spin upside down the signal subspace cycle of being separated by.
At first, in the 0-T/4 subcycle, the pixel A～P of dot matrix display screen shows respectively the picture signal of sub-pixel A1～P1, and now the light transmission part of diaphragm is positioned at the upper left corner of pixel correspondence position, thereby forms light hole in the upper left corner of pixel.The picture signal shown in dot matrix display screen shows the image of sub-pixel A1～P1 after sub-pixel A1～P1 in the relevant position that receives screen.The formed demonstration image effect of 0-T/4 subcycle schematic diagram as shown in figure 16.After this subcycle demonstration is complete, the diaphragm integral left moves 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 respectively the picture signal of sub-pixel A2～P2, and now the light transmission part of diaphragm is positioned at the upper right corner of pixel correspondence position, thereby form light hole in the upper right corner of pixel and the picture signal that shows in dot matrix display screen shows the image of sub-pixel A2～P2 after sub-pixel A2～P2 in the relevant position that receives screen.The formed demonstration image effect of T/4-2T/4 subcycle schematic diagram as shown in figure 17.After this subcycle demonstration is complete, each shading leaf of diaphragm upwards turns over turnback.
In the 2T/4-3T/4 subcycle, the pixel A～P of dot matrix display screen shows respectively the picture signal of sub-pixel A3～P3, and now the light transmission part of diaphragm is positioned at the lower right corner of pixel correspondence position, thereby forms light hole in the lower right corner of pixel.The picture signal shown in dot matrix display screen shows the image of sub-pixel A3～P3 after sub-pixel A3～P3 in the relevant position that receives screen.The formed demonstration image effect of 2T/4-3T/4 subcycle schematic diagram as shown in figure 18.This subcycle show complete 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 respectively the picture signal of sub-pixel A4～P4, and now the light transmission part of diaphragm is positioned at the lower left corner of pixel correspondence position, thereby forms light hole in the lower left corner of pixel.The picture signal shown in dot matrix display screen shows the image of sub-pixel A4～P4 after sub-pixel A4～P4 in the relevant position that receives screen.The formed demonstration image effect of 3T/4-T subcycle schematic diagram as shown in figure 19.This subcycle show complete after, the shading leaf of the diaphragm turnback of turning on one's side downwards, get back to the position of first sub-pixel of initial position, completes the demonstration of one-period.
All carry out such periodicity for every pixel of dot matrix display screen and show, because time of each subcycle is less than retentivity time of eye of human eye, finally will form the display effect that each pixel has been divided into 4 sub-pixels, be about to resolution and improved 4 times.Fig. 9 shows the schematic diagram according to the last display effect formed of above-mentioned display mode.
In the scheme of the present embodiment, owing to only adopting a diaphragm (striated and blind shaped mix), thereby can reduce to a certain extent the thickness of screen, and can need only the movement that diaphragm carries out one dimension and add that the upset adjustment of shading leaf can realize the effect of image pixel multiplication.
Embodiment tetra-
Figure 20 is the structural representation of pixel space segmenting device embodiment tetra-of the present invention, and in the present embodiment, the pixel segmentation device is the controlled diaphragm of rotary-switch.
The size of supposing the former pixel of dot matrix display screen is 3 millimeters (mm), and pixel size is 3mm*3mm, and M=K*L=4, and K=L=2 is increased to 4 times by the signal switching frequency of dot matrix display screen, and each subcycle is primitive period 1/4.
Space pixel segmenting device shown in Figure 20 is to take the controlled diaphragm of rotary-switch to describe as example, and diaphragm is split into a plurality of wickets, and each wicket is corresponding with a sub-pixel.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 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 or wherein be provided with turning axle the central of shading leaf.When the shading leaf does not rotate, this wicket is closed, and this wicket is light tight; When shading leaf 90-degree rotation, wicket is opened, the wicket printing opacity.
In the 0-T/4 subcycle, pixel A～the P of dot matrix display screen shows respectively the picture signal of sub-pixel A1～P1, and the wicket that now is positioned at the upper left corner in four wickets corresponding to each pixel is opened, other wicket closure, thus the picture signal shown in dot matrix display screen is receiving the hot spot that forms sub-pixel A1～P1 on screen after diaphragm.The formed demonstration image effect of 0-T/4 subcycle schematic diagram as shown in figure 21.
In the T/4-2T/4 subcycle, pixel A～the P of dot matrix display screen shows respectively the picture signal of sub-pixel A2～P2, and the wicket that now is positioned at the upper right corner in four wickets corresponding to each pixel is opened, other wicket closure, thus the picture signal shown in dot matrix display screen is receiving the hot spot that forms sub-pixel A2～P2 on screen after diaphragm.The formed demonstration image effect of T/4-2T/4 subcycle schematic diagram as shown in figure 22.
In the 2T/4-3T/4 subcycle, pixel A～the P of dot matrix display screen shows respectively the picture signal of sub-pixel A3～P3, and the wicket that now is positioned at the lower right corner in four wickets corresponding to each pixel is opened, other wicket closure, thus the picture signal shown in dot matrix display screen is receiving the hot spot that forms sub-pixel A3～P3 on screen after diaphragm.The formed demonstration image effect of 2T/4-3T/4 subcycle schematic diagram as shown in figure 23.
In the 3T/4-T subcycle, pixel A～the P of dot matrix display screen shows respectively the picture signal of sub-pixel A4～P4, and the wicket that now is positioned at the lower left corner in four wickets corresponding to each pixel is opened, other wicket closure, thus the picture signal shown in dot matrix display screen is receiving the hot spot that forms sub-pixel A4～P4 on screen after diaphragm.The formed demonstration image effect of 3T/4-T subcycle schematic diagram as shown in figure 24.So far complete the demonstration of one-period.
All carry out such periodicity for a pixel of dot matrix display screen and show, because time of each subcycle is less than retentivity time of eye of human eye, finally will form the display effect that every pixel has been divided into 4 sub-pixels, be about to resolution and improved 4 times.Fig. 9 shows the schematic diagram according to the last display effect formed of above-mentioned display mode.
Above-mentionedly only wherein several better embodiment of the present invention are had been described in detail, basic thought based on the invention described above, those skilled in the art can produce various derivative concrete implementations, for example in above-described embodiment three, striated diaphragm and window shutter dress diaphragm can not mixed, but two parts that conduct separates realize the effect of pixel doubling, these derivative schemes perhaps adopt other movement, upset mode to realize pixel doubling etc., within should all be comprised in 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 shown by the some array mode, according to actual needs, the invention described above scheme can be applicable to any dot matrix display screen, at this, will not add to repeat.
The device improved according to the dot matrix display screen resolution of the invention described above, the present invention also provides a kind of dot matrix display screen system, and it comprises each pixel, and the device that improves of dot matrix display screen resolution as above, does not repeat them here.
Above-described embodiment of the present invention, be only the detailed description to preferred embodiment of the present invention, do not form limiting the scope of the present invention.Any modification of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in claim protection domain of the present invention.
Claims (10)
1. the device that a dot matrix display screen resolution improves, it is characterized in that, comprise: be arranged on dot matrix display screen and receive the pixel space segmenting device between screen, with described dot matrix display screen, the signal time synchronous device that described pixel space segmenting device connects, described pixel space segmenting device spatially is divided into M sub-pixel according to the signal of described signal time synchronous device by each pixel of described dot matrix display screen, and periodically by each sub-pixel of pixel, corresponding demonstration image shows in the corresponding position received on screen, but described pixel space segmenting device comprises one-dimensional movement, the controlled diaphragm of the striated of interval printing opacity and/or the controlled diaphragm of turnover blind shaped.
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, for the switching frequency of input signal is improved to M doubly, make an original signal period be divided into M subcycle, in each subcycle, described pixel space segmenting device shows the content of corresponding sub-pixel according to the signal of described 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, described pixel space segmenting device comprises the controlled diaphragm of described striated of vertical overlapping placement mutually, and the controlled diaphragm of described striated carries out one-dimensional movement according to the signal of described signal time synchronous device.
4. the device that dot matrix display screen resolution according to claim 1 and 2 improves, it is characterized in that, described pixel space segmenting device comprises the controlled diaphragm of turnover blind shaped of vertical overlapping placement mutually, and the controlled diaphragm of described blind shaped carries out the one dimension upset according to the signal of described 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, the controlled diaphragm of striated, the controlled diaphragm of blind shaped that before and after described pixel space segmenting device comprises, arrange, the controlled diaphragm of described striated carries out one-dimensional movement according to the signal of described signal time synchronous device, and the controlled diaphragm of described blind shaped carries out the one dimension upset according to the signal of described 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 described blind shaped is arranged on the controlled light valve of described striated.
7. the device that dot matrix display screen resolution according to claim 1 and 2 improves, it is characterized in that, described pixel space segmenting device comprises the controlled diaphragm array of rotary-switch, M rotary-switch controllable light valve array is corresponding with a pixel, and the controlled diaphragm of described rotary-switch is rotated to control opening closed condition and whether passing through to control light of window according to the signal of described signal time synchronous device.
8. the device that dot matrix display screen resolution according to claim 1 and 2 improves, it is characterized in that, M=K*L, K, L are 1 positive integer while being different, K means a pixel is gone up in the row direction and doubly increases to K doubly, and L means a pixel is doubled to L doubly on column direction.
9. the device that dot matrix display screen resolution according to claim 1 and 2 improves is characterized in that described dot matrix display screen is LED dot matrix display screen or OLED dot matrix display screen.
10. a dot matrix display screen system, comprise each pixel, it is characterized in that, also comprises the device that dot matrix display screen resolution as described as claim 1 to 9 any one improves.
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| US20150022535A1 (en) * | 2012-12-04 | 2015-01-22 | Chengming Zhao | Distributed Graphics Processing |
| CN103257836B (en) * | 2013-04-19 | 2016-08-03 | 深圳市科曼医疗设备有限公司 | The output device of distribution and output intent |
| KR102322708B1 (en) * | 2014-12-24 | 2021-11-09 | 엘지디스플레이 주식회사 | Organic light emitting diode display device and method of sensing device characteristic |
| CN104599604A (en) * | 2015-02-16 | 2015-05-06 | 京东方科技集团股份有限公司 | Display device and driving method thereof |
| CN104570469B (en) * | 2015-02-16 | 2018-02-27 | 京东方科技集团股份有限公司 | A kind of display device and its driving method |
| CN106154552A (en) * | 2016-02-25 | 2016-11-23 | 翁志彬 | A kind of system representing virtual reality content and head-mounted display apparatus |
| CN105913798B (en) * | 2016-06-27 | 2018-08-07 | 深圳市华星光电技术有限公司 | A kind of cutting screen configuration method and device |
| CN106997745A (en) | 2017-06-15 | 2017-08-01 | 京东方科技集团股份有限公司 | A kind of display device and its driving method |
| CN108803010A (en) * | 2017-12-07 | 2018-11-13 | 成都理想境界科技有限公司 | A kind of method and device promoting optical fiber scanning image quality |
| CN110277074B (en) * | 2019-06-12 | 2022-03-08 | 福建华佳彩有限公司 | Cross striation improvement method and storage device |
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