CN103325316A - High-definition LED autostereoscopic display screen - Google Patents

High-definition LED autostereoscopic display screen Download PDF

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Publication number
CN103325316A
CN103325316A CN 201210072771 CN201210072771A CN103325316A CN 103325316 A CN103325316 A CN 103325316A CN 201210072771 CN201210072771 CN 201210072771 CN 201210072771 A CN201210072771 A CN 201210072771A CN 103325316 A CN103325316 A CN 103325316A
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grating
display screen
pixel
stereo
led
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张保全
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张保全
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Abstract

The invention discloses a high-definition LED autostereoscopic display screen which comprises a high-density LED three-in-one full-color display screen and stereoscopic gratings, wherein the stereoscopic gratings can adopt slit gratings or lenticular gratings, a stereoscopic composite image displayed on the display screen can be decomposed into multiple pieces of sequence parallax images which enter the left eye and the right eye of a viewer respectively, and accordingly, the autostereoscopic display is achieved. The high-definition LED autostereoscopic display screen has the outstanding advantages that compared with an LED screen comprising separated red green blue sub-pixels, three-time pixel density can be achieved, and the formed autostereoscopic display screen has high definition.

Description

High definition LED auto-stereoscopic display screen
Technical field:
The present invention relates to a kind of large-scale auto-stereoscopic display screen, more particularly, relate to a kind of LED auto-stereoscopic display screen of high-resolution, described auto-stereoscopic display screen can be used for TV and advertisement is play.
Background technology:
Stereo display has and contains much information, the three-dimensional information of actual scene all can be reproduced characteristics out, make the beholder can directly find out distance, the depth of each object the image from display screen, so the beholder can obtain more comprehensively and intuitively information.Traditional stereoscopic display screen needs the beholder to wear polarising glass, macyscope or active switch glasses and so on aid, although have good stereoeffect, is not suitable for the public place, particularly the displaying of advertisement.
In recent years, do not use the bore hole stereo technology of glasses to be studied energetically, its representative is the grating stereo display, it forms by installing grating additional on the two-way array display, be divided into grating forward type and grating rear-mounted, be grating can be between backlight and matrix display panel or matrix display panel towards that face of spectators, grating can be column mirror grating or slit grating.Grating stereo shows and to be divided into again the binocular parallax formula and multi-viewpoint three-dimensional shows, wherein multi-viewpoint three-dimensional shows to have good degree of freedom and the comfort level of watching, and is fit to many people and watches simultaneously, becomes the emphasis of development and application.The two-way array display mainly refers to liquid crystal display and plasma display, and small breadth shows in being fit to, and realize the large format stereo display that the number square meter is above, just needs to adopt LED display.
The disclosed seamless joint-separation LED auto-stereoscopic display screen of patented claim 201120098766.x, its R, G, B sub-pixel be cycle arrangement in vertical direction, in the horizontal direction homochromy arrangement, one group of R, G, B sub-pixel consist of a complete pixel on the vertical direction.Obviously, if do not configure 3 D grating, when using as flat-faced screen separately, its dot structure is irrational, as the solid screen of special production, the lifting that must bring cost.Patented claim 200810053808.0 disclosed LED large scale freedom stereoscopic display screens, its R, G, B sub-pixel be cycle arrangement in the horizontal direction, in vertical direction homochromy arrangement, one group of R, G, B sub-pixel consist of a complete pixel on the horizontal direction.
The grating free stereo shows that mainly dependence space segmentation display screen matrix is realized, in order to keep higher stereo display sharpness and to watch degree of freedom, needs LED display to have very high picture element density.Obviously, than R, the G, the B sub-pixel that separate, the three-in-one complete color screen that R, G, the LED wafer package of three kinds of different colours of B are formed in same colloid has higher picture element density.
Summary of the invention:
The invention discloses a kind of structure and principle of high definition LED auto-stereoscopic display screen, purpose is to provide a kind of sharpness that can be higher to show the large format stereo-picture, simultaneously the compatible stereoscopic display screen of playing the plane program.
Stereoscopic display screen is made of the three-in-one full color display of high density LED and 3 D grating.3 D grating can be slit grating or column mirror grating, the three-dimensional composograph that shows screen display can be divided into several sequence parallax images, enters respectively beholder's right and left eyes, thereby realizes that free stereo shows.Slit grating can by the slit grating film and organic glass is bonding consists of, and is installed in parallel in outside the LED display, and grating must mate with display screen, and the spacing of the pitch of grating, light-transmission coefficient, grating and screen is important parameter.How the pixel that the demonstration of stereo-picture need solve anaglyph reasonably is aligned on the picture element matrix of display screen, therefore the aligning method of pixel is the foundation of stereo display most critical, it has determined the pitch of grating, the angle of inclination of grid line, and the sharpness of stereo-picture.The outstanding advantage of this invention is, than the LED screen that the RGB sub-pixel of separate package consists of, three-in-one complete color screen can reach 3 times picture element density, and through rationally cutting apart of 3 D grating, the stereo-picture of formation has very high sharpness.
Description of drawings:
Fig. 1 is the Pixel arrangement schematic diagram of three-in-one full color display, is made of support frame (5) and full color pixel (1), has gap (4) between the picture element.
Fig. 2 is the slit grating schematic diagram, and slit grating comprises euphotic zone (2) and photo-shield strip (3).
Fig. 3 is the front elevation of stereoscopic display screen, by LED display and the slit grating before covering it consist of.In positive angle, the euphotic zone (2) that sees through slit grating can be seen the part full color pixel (1) on the LED display, and most of full color pixel (1) has been sheltered from by photo-shield strip (3), need to could be seen in other angle.
Fig. 4 is that 5 viewpoint stereo-picture pixels are arranged schematic diagram, and is synthetic by 5 width of cloth anaglyphs.One by one corresponding demonstration of full color pixel (1) on the picture element of stereo-picture (6) and the LED screen, this point of digitized representation in picture element (6) square frame derives from the numbering of the anaglyph of correspondence position.
Fig. 5 is that 6 viewpoint stereo-picture pixels are arranged schematic diagram, and is synthetic by 6 width of cloth anaglyphs.One by one corresponding demonstration of full color pixel (1) on the picture element of stereo-picture (6) and the LED screen, this point of digitized representation in picture element (6) square frame derives from the numbering of the anaglyph of correspondence position.
Fig. 6 is the inner structure schematic diagram of full color pixel (1), formed a complete pixel of three-in-one complete color screen in same colloid (10) by the LED wafer package of R (7), G (8), (9) three kinds of different colours of B, dotted line is the orientation of three wafers.
The below describes structure and the implementation procedure of LED stereoscopic display screen in detail.
High definition LED auto-stereoscopic display screen is made of three-in-one full color display and 3 D grating, the LED wafer package of R, G, three kinds of different colours of B is formed a complete pixel (1) in same colloid, 3 D grating can be slit grating, also can be column mirror grating, can show stereo-picture and video.The pixel of full color display (1) is dot matrix arranges, and horizontal pixel central point spacing is a, and vertical pixel central point spacing is b, has the gap between the light-emitting area of neighbor.
The aligning method of stereo-picture pixel (6) is the stereo display determinative, for dot matrix display screen, usually has vertically and the two kinds of aligning methods that tilt.Vertically be arranged with 2 deficiencies, the one, the sharpness imbalance that lower lateral resolution and higher longitudinal frame cause, the 2nd, moir Lou Lou patterns is more obvious.Oblique arrangement is by being divided into free inclination and optimizing and, and free inclination can take full advantage of existing stereoscopic grating material, has cost advantage, but the sharpness that crossview causes reduction is lost more than gain for the large stereo display screen.The present invention realizes resolution equilibrium and minimum crossview by the oblique arrangement angle of optimal design pixel, obtains best sharpness and watches the comfort level index.
The grating line orientations of 3 D grating is consistent with the oblique arrangement angle of voxel, the crossview of image can be effectively reduced in gap between neighbor, the independence that keeps pixel, setting up the grating line orientations of body grating and the angle of vertical direction is θ, tg θ=a/b and tg θ=a/ (2b) are two kinds of possible selections.Obviously, all be that a=b more is conducive to improve the pixel arranging density uniformly if dot matrix is arranged level, the vertical direction of pixel, then angle θ is 45 degree or 26.565 degree.
45 degree tilt for the stereo-picture more than 5 viewpoints, and the resolution imbalance still can occur with the defective of light and shade moir Lou Lou patterns, and θ=26.565 degree are more satisfactory selections.The little square frame of same numeral can be found out from Fig. 4, and its distribution is fully uniformly, and namely 5 viewpoint stereo-pictures have the good sharpness of watching degree of freedom and the best; Can find out with the little square frame of numeral from Fig. 5,6 viewpoint stereo-pictures have better watches degree of freedom and sharpness preferably.Therefore, grating lines and vertical direction 26.565 degree tilt, and the stereo-picture of 5 viewpoints and 6 viewpoints is exactly preferred version of the present invention.
If need the larger degree of freedom of watching, tg θ=a/ (3b) is a feasible selection, θ=18.43 degree, show 9 viewpoints or 10 viewpoint stereo-pictures, unavoidably can bring certain pixel cross-talk, but be applied in super large breadth, ultrahigh resolution, such as still very desirable on the LED screen of 4K*2K.
3 D grating can be slit grating, also can be column mirror grating.Slit grating is by the slit grating film and organic glass is bonding consists of, and keeps suitable spacing to be fixedly mounted on outside the LED display, the tilt angle theta of slit grating grid line, and the pitch p=b*sin θ * N* δ of grating, N is number of views.The wide ratio of slit grating pitch and euphotic zone (2) seam is N, the space D of slit grating and screen is in 80~240mm scope, δ ≈ 0.99 is correction factor, the exact value of D, δ is relevant with viewing ratio, need to determine by test is concrete, maximum three tests just can obtain accurate result.The slit grating parameter is in four combinations provided by the invention:
1. θ=26.565 are spent, N=5, b=2.5mm, p=5.59* δ;
2. θ=26.565 are spent, N=6, b=2.5mm, p=6.708* δ;
3. θ=18.43 are spent, N=9, b=2.5mm, p=7.113* δ;
4. θ=18.43 are spent, N=10, b=2.5mm, p=7.904* δ;
Column mirror grating is by cylindrical lens grating film and organic glass is bonding consists of, keep suitable spacing to be fixedly mounted on outside the LED display, the tilt angle theta of column mirror grating grid line, the pitch p of grating is consistent with the requirement of slit grating, the convex surface of column mirror grating inwardly outwardly all can, but need to keep suitable distance D make pixel (1) face of LED display be in focus state.
In the complete pixel of full-color screen, LED wafer " " word of R, G, three kinds of different colours of B arranges and is encapsulated in the same colloid, and arrangement angle is consistent with the grating line orientations, shown in the right figure of Fig. 6.Can further avoid like this color cross-talk of color-separated appearance, improve the colour purity of stereo-picture.
Stereoscopic video images generally adopts the split screen form to preserve, and is convenient to compression of images, storage and transmission, finishes in real time decompressions before solid is play, three-dimensionally synthesizes and show whole process.The stereo-picture that the LED screen is play not exclusively is equal to video image, and data volume will be lacked a lot, can omit wherein mostly process, directly stores and play three-dimensional composograph.Stereo-picture is synthetic to be finished in two steps:
At first be the pre-service of parallax sequence image, the parallax sequence image is exactly the said visual point image in front, and the pixel count of LED screen is W*H, and all parallax sequence images the ratio of width to height by display screen is cut, and uniform zoom becomes the W*H pixel.Then according to Fig. 4, stereo-picture pixel aligning method shown in Figure 5, the pixel value of every width of cloth parallax sequence image respective point is filled into the pixel of stereo-picture correspondence position, finishes the building-up process of stereo-picture.
For θ=26.565 degree, N=5 or 6, stereo-picture i are listed as the capable pixel value F (i, j) of j and can be determined by following formula:
F(i,j)=f n(i,j)
n=[([j/N]+2(i-1))/N]
Wherein, f n(i, j) represents the color value that n width of cloth parallax sequence image i is listed as the capable pixel of j, i=1, and 2 ..., W; J=1,2 ..., H; Symbol [] represents remainder and figures method.
High definition LED auto-stereoscopic display disclosed by the invention has advantages of giant-screen, stereoscopic sensation is strong, image is fine and smooth, also can directly show plane picture and the literal of higher resolution.Can be widely used in video and the advertisement programme of the public places such as market, airport, cinema.
Embodiment:
Be that the three-in-one full-color LED display screen of 2.5mm and slit 3 D grating consist of auto-stereoscopic display screen with a distance.Display module by 36*24 piece 16*16 dot matrix consists of a LED demonstration group mould, and the group mould is of a size of 144cm*96cm, total 576*384 pixel.3*3 demonstration group mould forms the LED display that is of a size of 432cm*288cm, and display resolution is 1728*1152.The pixel count of stereo-picture is 1728*1152, and is identical with display resolution, synthetic by 6 viewpoint anaglyphs.Slit grating lines and vertical direction angle are 26.565 degree, and pitch 6.657mm stitches wide 1.2mm, is bonded together with organic glass, are installed in parallel in outside the LED display grating and screen spacing 120mm.Slit grating can be divided into several sequence parallax images with the stereo-picture that shows screen display, enter respectively beholder's right and left eyes, thereby realize that free stereo shows, stand in apart from screen 8m place far away, can clearly watch stereo-picture, actual viewing distance scope is 4~18m, adjusts grating and screen spacing, can change the scope of viewing distance.
The present invention is based on grating orientation and is to the lower-left and with vertical direction from upper right that 26.565 ° legend structure described, but obviously, and its symmetrical structure, grating orientation be from upper left to the bottom right, also description according to the invention; LED wafer putting in order in colloid is RGB, put in order for three's combination in any all be feasible.

Claims (7)

1. high definition LED auto-stereoscopic display screen, consisted of by three-in-one full color display and 3 D grating, with R, G, the LED wafer package of three kinds of different colours of B forms a complete pixel of three-in-one complete color screen in same colloid, 3 D grating can be slit grating or column mirror grating, can show stereo-picture and video, it is characterized in that, the pixel of full color display is dot matrix and arranges, horizontal pixel central point spacing is a, vertical pixel central point spacing is b, has the gap between the light-emitting area of neighbor, and the grating line orientations of 3 D grating and the angle of vertical direction are θ, tg θ=a/ (2b), perhaps tg θ=a/ (3b).
2. stereoscopic display screen as claimed in claim 1 is further characterized in that, the pixel level that dot matrix is arranged and vertical direction all are uniformly, a=b, θ=26.565 degree.
3. stereoscopic display screen as claimed in claim 2 is further characterized in that, the stereo-picture of demonstration is synthetic by 5 or 6 viewpoint anaglyphs, the pitch p=b*sin θ * N* δ of grating, and N is number of views, δ ≈ 0.99 is correction factor.
4. stereoscopic display screen as claimed in claim 3 is further characterized in that, in the complete pixel of full-color screen, LED wafer " " word of R, G, three kinds of different colours of B arranges and is encapsulated in the same colloid, and arrangement angle is consistent with the grating line orientations.
5. stereoscopic display screen as claimed in claim 4 is further characterized in that, LED display point is apart from being 2.5mm, and stereo-picture is synthetic by 5 viewpoint anaglyphs, the pitch p=5.59* δ of grating, and δ ≈ 0.99 is correction factor.
6. stereoscopic display screen as claimed in claim 1 is further characterized in that, the pixel that dot matrix is arranged all is uniformly in level and vertical direction, a=b, and θ=18.43 degree, the stereo-picture of demonstration is synthetic by 9 or 10 viewpoint anaglyphs.
7. stereoscopic display screen as claimed in claim 6 is further characterized in that, LED display point is apart from being 2.5mm, and stereo-picture is synthetic by 10 viewpoint anaglyphs, the pitch p=7.904* δ of grating, and δ ≈ 0.99 is correction factor.
CN 201210072771 2012-03-20 2012-03-20 High-definition LED autostereoscopic display screen Pending CN103325316A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103888746A (en) * 2014-01-27 2014-06-25 北京乐成光视科技发展有限公司 Three-in-one LED naked-eye 3D display device based on sub pixels and method thereof
CN104506843A (en) * 2014-12-10 2015-04-08 深圳市奥拓电子股份有限公司 Multi-viewpoint LED (Light Emitting Diode) free stereoscopic display device
CN104965308A (en) * 2015-08-05 2015-10-07 京东方科技集团股份有限公司 Three-dimensional display device and display method thereof
CN105635710A (en) * 2015-07-05 2016-06-01 东莞康佳电子有限公司 3D television three-dimensional image imaging method and 3D television using the method
CN105913777A (en) * 2016-07-04 2016-08-31 陈其炜 Naked 3D display device with prismatic grating in front of LED screen or rear projection screen
WO2020239009A1 (en) * 2019-05-29 2020-12-03 视觉技术创投私人有限公司 Composite pixel packaging structure, autostereoscopic display unit, and autostereoscopic display

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103888746A (en) * 2014-01-27 2014-06-25 北京乐成光视科技发展有限公司 Three-in-one LED naked-eye 3D display device based on sub pixels and method thereof
CN103888746B (en) * 2014-01-27 2016-05-11 万象三维视觉科技(北京)有限公司 A kind of three-in-one LED bore hole 3D display unit and method based on sub-pixel
CN104506843A (en) * 2014-12-10 2015-04-08 深圳市奥拓电子股份有限公司 Multi-viewpoint LED (Light Emitting Diode) free stereoscopic display device
CN105635710A (en) * 2015-07-05 2016-06-01 东莞康佳电子有限公司 3D television three-dimensional image imaging method and 3D television using the method
CN104965308A (en) * 2015-08-05 2015-10-07 京东方科技集团股份有限公司 Three-dimensional display device and display method thereof
US10739612B2 (en) 2015-08-05 2020-08-11 Boe Technology Group Co., Ltd. 3D display device and display method thereof
CN105913777A (en) * 2016-07-04 2016-08-31 陈其炜 Naked 3D display device with prismatic grating in front of LED screen or rear projection screen
WO2020239009A1 (en) * 2019-05-29 2020-12-03 视觉技术创投私人有限公司 Composite pixel packaging structure, autostereoscopic display unit, and autostereoscopic display

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