CN109377892A - A kind of optical system for realizing multi-screen seamless tiled display - Google Patents
A kind of optical system for realizing multi-screen seamless tiled display Download PDFInfo
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- CN109377892A CN109377892A CN201811616376.XA CN201811616376A CN109377892A CN 109377892 A CN109377892 A CN 109377892A CN 201811616376 A CN201811616376 A CN 201811616376A CN 109377892 A CN109377892 A CN 109377892A
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Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/302—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements characterised by the form or geometrical disposition of the individual elements
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
Abstract
The present invention provides a kind of optical systems for realizing multi-screen seamless tiled display, including transmission-type prism optical element, optical flat and diffusion type optical element；Wherein, the diffusive optical element is fitted closely with optical flat, transmission-type prism optical element, and shown diffusive optical element is located on the display screen that the multi-screen is spliced to form；The optical flat is located on the diffusive optical element, for connecting transmission-type prism optical element and diffusion type optical element；The position for the piece that the upper surface face multi-screen that the transmission-type prism optical element is located at optical flat is spliced to form.The present invention utilizes the optical element of autonomous Design, it is proposed the optical system that piece is generated after a kind of elimination multi-screen splices, the program aims at a kind of seamless tiled display effect of super large viewing visual angle, and smooth in the image transition of edge joint position viewing and do not have apparent luminance difference with the image near piece.
Description
Technical field
It is seamless spliced aobvious that the present invention relates to optical device and System design technology fields more particularly to a kind of realization multi-screen
The optical system shown.
Background technique
In recent years, large-scale LCD panel rapidly develops, although large-sized LCD can accomplish 80 cun even 100
It is very little, but in the occasion for needing large screen display, still it cannot meet the needs of users.Domestic and international large scale large-screen splicing at present
It is all using LCD, the independent display unit such as DLP carries out simple physics and is spliced, since each display unit is only
Vertical encapsulation, due to LCD driving circuit and technique, the piece of one fixed width can be generated.So playing picture in display
When face, it will lead to display picture and be divided, destroy the continuity and integrality of display image, seriously affect viewing experience.
There are two types of now general to the processing of such piece both at home and abroad: the first is to add LED point in display unit frame
Battle array, this method higher cost, and it is not easy volume production, display effect is also not highly desirable；Second is reached by curved glass
Refraction effect, the achievable visible angle for watching seamless delivery of content of this method is smaller, or even the meeting in larger viewing visual angle
Watch the piece of amplification.This curved glass is easy to be affected by ambient light, and observer can pass through curved glass part
It is easier to watch brighter environment light to influence visual effect.
Patent document 1 (Chinese patent notification number CN206271355U) proposes a kind of method to eliminate the spelling of mosaic screen
Seam.This method is covered on piece using a kind of arc-shaped symmetrical photoelectric glass in both sides of the edge, and practical is exactly a kind of by curved
For bent glass come the method for reaching refraction effect and then eliminating piece, the visible angle that this method is realized is smaller, cannot achieve big view
The effect of piece is eliminated under angle, meanwhile, the normal pixel covered under arc photoelectric glass can be stretched seriously, and serious item is formed
Line sense, very influence viewing experience.
Patent document 2 (China Patent Publication No. CN103700323A) proposes a kind of method to eliminate the spelling of mosaic screen
Seam.This method is covered on above piece using linear Fresnel lens, by image is carried out stretch amplification in the way of override
Piece, but when this method is watched with large viewing, can be appreciated that the black seam being amplified instead, simultaneously as stretching amplification
More apparent striped lines and serious anamorphose can be brought to greatly influence viewing effect.In addition, by linear
The brightness of image for the edge joint position that Fresnel Lenses is watched is significantly lower than the brightness of other neighbouring display areas, makes to display effect
At strong influence.Meanwhile the viewing visual angle that this method is realized is smaller, therefore there is also more problems.
Patent document 3 (China Patent Publication No. CN108766255A) is a earlier patent application of inventor team,
A kind of multi-screen seamless tiled display system, including at least two display units and at least one array of linear prisms are provided,
Piece is spliced to form at least two display unit per two adjacent display units, the array of linear prisms setting exists
On the outside of the piece, and the piece is completely covered the array of linear prisms.By array of linear prisms to piece two sides
The refraction of the emergent ray of display unit achievees the purpose that visually to eliminate piece.But the program is asked there is also several
Topic: 1, observer will be seen that apparent striped lines 2, observer are seen by array of linear prisms by array of linear prisms
A blanking bar will be present in image, this phenomenon will be apparent with the increase of viewing visual angle.3, array of linear prisms
Total reflection effect can greatly reduce viewing visual angle.
Summary of the invention
The existing deficiency for eliminating display piece scheme is solved in order to optimize, the present invention is first using the optics of autonomous Design
Part proposes that the optical system that piece is generated after a kind of elimination multi-screen splices, the program aim at a kind of super large viewing visual angle
Seamless tiled display effect, and in the image excess smoothness of edge joint position viewing and without apparent luminance difference.The present invention
It is realized especially by following technical solution:
A kind of optical system for realizing multi-screen seamless tiled display, including transmission-type prism optical element 105-A, optics
Plate 104 and diffusion type optical element 103；Wherein, the diffusive optical element 103 and optical flat 104, transmission-type prismatic light
It learns element 105-A to fit closely, shown diffusive optical element 103 is located on the display screen that the multi-screen is spliced to form；It is described
Optical flat 104 is located on the diffusive optical element 103, for connecting transmission-type prism optical element 105-A and diffusion type
Optical element 103；The transmission-type prism optical element 105-A is located at the upper surface face multi-screen splicing of optical flat 104
The position of the piece of formation makes observer when watching display system it is seen that piece for carrying out refraction modulation to light
The image of the right and left rather than piece, realize seamless spliced effect, while keeping edge joint position image more smooth.
As a further improvement of the present invention, the system also includes optical film material 105-B, the optical film material 105-B
Whole be covered on the optical flat 104 is constituted with the transmission-type prism optical element 105-A.
As a further improvement of the present invention, the main function of diffusion type optical element 103 has: eliminating due to transmission-type rib
The amplification bring striped lines of mirror optical element 105-A；The brightness for improving stitching portion image, makes the bright of edge joint position image
Degree and the brightness of image of its neighbouring display area do not have apparent difference, solve the problems, such as the blanking bar of edge joint position image, make simultaneously
Display panel brightness is more uniform, promotes viewing experience；The element and optical flat 104, transmission-type prism optical element 105-A
The total reflection problem that can solve optical system surface after fitting closely, to increase viewing visual angle.
As a further improvement of the present invention, the bore L2 > 10mm of the transmission-type prism optical element 105-A.
As a further improvement of the present invention, the depth of the small prism of each of described transmission-type prism optical element 105-A
For C1, the value range of width C2, depth C1 are 0mm < C1 < 2mm；The value range of width C 2 is 0mm < C2 < 2mm；θ
1, θ 2, θ 3 is respectively three angles of prism, wherein the value range of θ 1 is 0 ° of 70 ° of 1 < of < θ, and more preferred range is:
0 ° of < θ 1 < arcsin (1/n), n are the refractive index of material.
As a further improvement of the present invention, the transmission-type prism optical element 105-A passes through UV cure process
Production, material therefor are UV glue；Or the transmission-type prism optical element 105-A makes of hot-forming technique, material
Material is plastic resin material；Or the transmission-type prism optical element 105-A makes of glass material, the glass material packet
Include crown glass, flint glass, dense crown, dense flint glass or LA system glass；In the transmission-type prism optical element
For the surface plating optical film of 105-A come the optical property for part of changing the title of a reign, the optical film includes anti-reflection antireflective film.
As a further improvement of the present invention, optical flat 104 is by diffusion type optical element 103 and transmission-type lens optical
Element 105-A, which links together, makes three combine together formula structure, the structure with a thickness of d1, range is 1mm < d1 <
50mm, the structure are d2 at a distance from display panel, and range is 0mm≤d2 < 20mm.
As a further improvement of the present invention, the optical flat 104 is made by UV cure process, material therefor
For UV glue；Or the optical flat 104 makes of hot-forming technique, material is plastic resin material；Or it is described
Optical flat 104 makes of glass material, and the glass material includes crown glass, flint glass, dense crown, dense flint glass
Glass or LA system glass；On the surface of the optical flat 104, plating optical film is come the optical property for part of changing the title of a reign, the optical film packet
Include anti-reflection antireflective film.
As a further improvement of the present invention, the diffusion way of the diffusion type optical element 103 includes: in all angles
The point all spread is spread, only in the one direction diffusion in horizontally or vertically direction, simultaneously in the twocouese in horizontal and vertical direction
Diffusion.
As a further improvement of the present invention, the diffusion angle of the diffusion type optical element 103 is bigger, to solution striped
The problem of lines, the luminance difference of stitching portion image and total reflection, is advantageously.
As a further improvement of the present invention, by way of image procossing to the image of piece two sides carry out stretch or
Compression processing compensates transmission-type prism optical element 105-A deformation caused by image so that stitching portion image it is more smooth,
Without deformation.
As a further improvement of the present invention, by the adjusting to stitching portion image and its neighbouring brightness of image, further
Improve the uniformity and blanking bar of overall picture brightness, improves display effect.
Detailed description of the invention
Fig. 1 is the display screen diagrams that four pieces of displays with frame are spliced；
Fig. 2 is the structural schematic diagram of the optical system of realization multi-screen seamless tiled display of the invention；
Fig. 3 is the optical path distribution map of optical system of the invention；
Fig. 4 is the structure chart of transmission-type prism optical element 105-A；
Fig. 5 is several preferred structure schematic diagrames of transmission-type prism optical element 105-A；
Fig. 6 is the schematic structural diagram of the first embodiment of optical flat 104；
Fig. 7 is the schematic structural diagram of the second embodiment of optical flat 104；
Fig. 8 is the 3rd embodiment structural schematic diagram of optical flat 104；
Fig. 9 is pixel light emission brightness curve figure；
Figure 10 is to show to occur that brightness of image is inconsistent or the light path schematic diagram of blanking bar；
Figure 11 is schematic diagram of the display brightness after optimization with divergence of beam angle change；
Figure 12 is the light path schematic diagram one when 105-A is not bonded entirely with 104；
Figure 13 is the light path schematic diagram two when 105-A is not bonded entirely with 104；
Figure 14 is the light path schematic diagram one when 105-A is bonded entirely with 104,104 are not bonded entirely with 103；
Figure 15 is the light path schematic diagram two when 105-A is bonded entirely with 104,104 are not bonded entirely with 103；
Figure 16 is the light path schematic diagram one when 105-A is bonded entirely with 104,104 are bonded entirely with 103；
Figure 17 is the light path schematic diagram two when 105-A is bonded entirely with 104,104 are bonded entirely with 103；
Figure 18 is diffusion mode schematic diagram of the diffusion type optical element 103 to light.
Specific embodiment
The present invention is further described for explanation and specific embodiment with reference to the accompanying drawing.
As shown in Figure 1, the display screen that four pieces of displays with frame are spliced, wherein 101 represent display
Display area, 102 dash areas indicate the frame of display not displayable content, and the region A in dashed middle line box is two pieces
The part that display left and right side frame is connected, as piece, width L1.After make displays splicing, when playing display content,
The presence of display splicing regions A causes picture to be divided, very influence viewing experience.
Scheme proposed by the present invention is exactly the optical texture in the front covering design of display stitching portion, is seeing human eye
When seeing the display screen that multi-display is spliced, the display splicing regions A piece formed is eliminated on visual perception.
Wherein, it can be liquid crystal display (LCD display) for the display of splicing, being also possible to plasma display, (PDP is shown
Device), it is also possible to OLED display, is also possible to rear projection display (DLP rear-projection shows that LED rear-projection is shown), is also possible to
Cathode-ray tube display etc..
In Fig. 2,101 be the display area of display, and 102 be piece when display splices, and 103 be diffusion type optics member
Part, 104 be transmitted light plate.The transmission-type prism optical element that 105-A is made of multiple prisms, 105-B are optics
Membrane material or plate.Wherein, 104 can be made by PET, PMMA, optical glass or other transparent materials, 105 can by PET,
PMMA or other transparent materials are made.
As shown in Fig. 3 integrally-built light path schematic diagram, wherein 101 be the display area of display, intermediate shade
Part is that display left and right side frame is connected part, i.e. piece 102.Assuming that the light that any point Y is issued on piece 102 passes through
It is reflected after the common modulation of diffusive optical element 103, optical flat 104 and transmission-type prism optical element 105-A with wide-angle
To fringe region.And the light that the pixel X beside piece is issued passes through diffusive optical element 103, optical flat 104 and transmission-type
Observer position is refracted to after the common modulation of prism optical element 105-A, observer is around piece what is watched at this time
Display picture rather than piece, which achieves the seamless tiled displays under big visual angle.
It is emphasized that due to the effect of transmission-type prism optical element 105-A, the image that human eye is observed by it
The brightness that will appear striped lines and image is significantly lower than the brightness of image of other neighbouring display areas, therefore present invention introduces expansions
Formula optical element 103 is dissipated, which can eliminate the striped lines of above-mentioned image and improve the brightness of stitching portion image, make to spell
The brightness of image of the brightness of image and its neighbouring display area does not have apparent difference at seam, solves the problems, such as blanking bar.In addition, expanding
Dispersive optical element 103 and optical flat 104, transmission-type prism optical element 105-A are able to solve optical system after fitting closely
The total reflection problem on surface, to increase viewing visual angle.Image processing techniques can also be added in the present invention, to stitching portion image into
Row stretches or compression processing compensates, so that image transition is natural, carries out brightness without deformation, or to the image of stitching portion
Compensation is further to improve brightness uniformity and blanking bar.The effect of each element is described more detail below.
Transmission-type prism optical element 105-A's is made of multiple prism units, and there are two main functions, first is that spelling
Light carries out the refraction modulation of wide-angle at seam, and observer is made to can't see piece when watching spliced display system；Second is that
Refraction modulation is carried out to the image around piece, the content for seeing observer is the content that piece surrounding normal is shown, makes to spell
It is more smooth to connect the image that rear display system is shown.
It is illustrated in figure 4 the structure chart of transmission-type prism optical element 105-A, L2 is the mouth of transmission-type prism optical element
Diameter limits its value range as L2 > 10mm.Transmission-type prism optical element is center symmetrical structure, the depth of each of which small prism
Degree is C1, and width C2, the value range of depth C1 is 0mm < C1 < 2mm；The value range of width C 2 is 0mm < C2 <
2mm.θ 1, θ 2, θ 3 is respectively three angles of prism, wherein the value range for limiting θ 1 is 70 ° of 0 ° of < θ, 1 <, more preferred
Range is: 0 ° of < θ 1 < arcsin (1/n), n are the refractive index of material.
Work in-process, transmission-type prism optical element can be made by UV cure process, and material therefor is UV glue,
The refractive index of used UV glue does not limit.Further, it is also possible to make of hot-forming technique, material can be plastic tree
Rouge material (such as PMMA, PC, COC, POLYCARB etc.)；It is also possible to various glass materials (such as crown glass, flint glass, weight
Crown glass, dense flint glass or LA system glass etc.)；It can also be made of traditional cold machining process, material can be
Plastic resin material (such as PMMA, PC, COC, POLYCARB etc.)；It is also possible to various glass materials (such as crown glass, flint glass
Glass, dense crown, dense flint glass or LA system glass etc.)；Various optical films (such as anti-reflection antireflective film) can be plated on surface
Come the optical property for part of changing the title of a reign.
It should be noted that transmission-type lens optical structure described above is one of embodiment, as long as can be with
It realizes and wide-angle deviation is carried out to edge joint position light, human eye is made to can't see the transmission-type prism knot of piece when watching splicing system
Structure all enumerates the form of several other transmission-type lens optical structures within the protection scope of this patent, in Fig. 5.Equally
, to several structures that Fig. 5 is enumerated, L2 is its bore, and range is L2 > 10mm.
It should be noted that element 105-B is a kind of optics plate or membrane material by transparent material production, with transmission-type
Prism optical element, which is integrally formed, to be covered in front of display equipment, it is therefore an objective to be kept overall system structure more beautiful, be made material
Material can be plastic resin material (such as PMMA, PC, COC, POLYCARB etc.)；It is also possible to various glass materials (such as crown board glass
Glass, flint glass, dense crown, dense flint glass or LA system glass etc.) or other transparent composite materials.
The effect of optical flat 104 mainly connects transmission-type prism optical element 105-A and diffusion type optical element 103
Together, so that this three is combined together, guarantee that there are air layers between three.During connection, glue can be used
It closes, the techniques such as full fitting are realized.
The material of optical flat 104 can be plastic resin material (such as PMMA, PC, COC, POLYCARB etc.)；It can be
Various glass materials (such as crown glass, flint glass, dense crown, dense flint glass or LA system glass etc.)；It can also lead to
The production of UV cure process is crossed, material therefor is UV glue, and the refractive index of used UV glue does not limit.Furthermore it is possible in table
Various optical films (such as anti-reflection antireflective film) are plated come the optical property for part of changing the title of a reign in face.
It is a monolith that optical flat 104, which can be as shown in FIG. 6, can also be spliced by two or more pieces, Fig. 7
By taking two pieces of splicings as an example.Polishing and packing material can be carried out to stitching portion for splicing situation as shown in Figure 7 to make up seam
Gap, such as solidified forming after UV glue can be inserted.Here it is only illustrated for inserting UV glue, is not to guarantor
Shield range is limited.
As shown in figure 8, the junction of two pieces of transmitted light plates of splicing also can be made other shapes, then use
Material is filled, such as can insert solidified forming after UV glue.Here it is only said for inserting UV glue
It is bright, it is not to limit protection scope.
Diffusion type optical element 103 is a kind of optical element that certain angle diffusion can be carried out to incident ray, master
There are three acting on, first is that eliminating the amplification bring striped lines due to transmission-type prism optical element 105-A；Second is that
The brightness for improving stitching portion image keeps the brightness of edge joint position image and the brightness of image of its neighbouring display area no apparent poor
It is different, it solves the problems, such as that there are blanking bars for stitching portion image, while keeping display panel brightness more uniform, promotes viewing experience；Three
It is that the element and optical flat 104, transmission-type prism optical element 105-A can solve the optical system surface after fitting closely
Total reflection problem, to increase viewing visual angle.Diffusion type optical element 103 can be the optics member that micro-structure is distributed in surface
Part, for example, two layers of cylindrical lens array of microlens array, vertical interlaced, vertical interlaced two layers of Linear Triangular prism array,
Circular cone array, irregular geometric jacquard patterning unit surface etc..Diffusion type optical element 103 be also possible to by by light diffusing agent be added to PC,
The element formed in the transparent materials such as PVC, PS, PMMA, PET, epoxy resin, light diffusing agent can be organic fine particles, can also be with
It is inorganic particles, such as acrylic particle, styrene particulate, acrylate particle, silicon dioxide microparticle etc..Diffusion type optics member
Part 103 can also be inside the optical element that micro-structure is distributed in surface while add light diffusing agent and the element that is formed.With
It is upper only to illustrate several possible diffusion type optical elements, it is not to limit the protection scope of this patent.In fact,
As long as the diffusion of certain angle can be carried out to incident light and play the role of the diffused component of above three to be all that this patent is protected
The range of shield.Angle of flare in the present invention is defined as: divergence of beam after the parallel ray beam incidence diffusion type optical element
Angle, such as γ, λ 1, the λ 2 in Figure 18.
(1) striped lines is eliminated
Illustrate that the principle of transmission-type prism optical element elimination piece was mentioned in front, observer is seamless spliced in observation
When display system, the light modulation that transmission-type prism optical element can issue the display content around piece enters observer's
Human eye, therefore original it should be appreciated that the local observer of piece is it is seen that normal picture, if diffusion type optics member is not added
Part 103, observer's direct viewing have apparent pixel by the modulated image of transmission-type prism optical element and stretch amplification
Sense, can experience apparent striped lines, seriously affect viewing experience.After diffusion type optical element 103 is added, display
After the light of sending can first pass through the diffusion modulation of diffusion type optical element 103, then pass through optical flat and transmission-type prismatic light
The modulation for learning element enters human eye, so that bring striped lines after the modulation of transmission-type prism optical element is eliminated, it is further excellent
Change viewing experience.It should be noted that angle of flare is bigger for this problem, improvement is more obvious, when angle of flare is greater than 3 °
When, striped lines phenomenon begins to make moderate progress, and when angle of flare is greater than 10 °, striped lines problem is solved substantially.Cause
This, the value range of angle of flare should be 3 °~180 °, and only when diffusion angle is bigger, the light transmittance of entire optical system is got over
Low, under the conditions of the display backlight of equal-wattage, the brightness of display is lower, therefore more preferred range is: 3 °~
130°。
(2) brightness for improving stitching portion image, solves the problems, such as blanking bar
On the other hand, regular display is because of itself the characteristics of luminescence, brightness can with the increase of light angle and
Reduce, Fig. 9 gives the luminous relative luminance curve figure an of pixel, since each pixel on display area is with difference
Angle emit light, therefore shooting angle it is smaller light its light emission luminance it is stronger, the bigger light of shooting angle its shine
Brightness is weaker, this is to cause stitching portion brightness of image and its neighbouring display area brightness of image has differences and the root of blanking bar problem
This reason.For example, being by accordingly scheming by the image that transmission-type prism optical element 105-A sees when human eye face piece
As the high angle scattered light offer of area pixel, such as the pixel M in the Y of the region Figure 10.Stitching portion without being seen by 105-A is attached
Close image thus may be used by the low-angle light offer of respective image area pixel, such as the pixel N in the Z of the region Figure 10
The difference of brightness of image can be brought.At this point, figure of the human eye by the transmission-type prism optical element 105-A display area Y seen
Image brightness can be lower than the brightness of image for the region Z not seen by the optical element, to occur on the image of stitching portion dark
Band seriously affects final display effect.
Diffusion type optical element of the invention can well solve this problem, and the light that display issues is by diffusion
After the diffusion modulation of formula optical element, the light emission luminance distribution of display can be optimized, keep display brightness distribution more uniform, see
For the person of examining when watching display system, will not see stitching portion image, there are apparent luminance differences with its neighbouring display area image
It is different, it is as shown in figure 11 the display brightness after optimization with divergence of beam angle change to advanced optimize viewing experience
Trend schematic diagram, the light emission luminance of display pannel pixel are not decreased significantly with the increase of dispersion angle, pixel light emission
Brightness becomes more uniform.At this point, the brightness of image of display area Z and the image of region Y shown in Figure 10 seen by person are bright
Degree ensure that comfortable viewing experience almost without difference.For this problem, angle of flare is bigger, and improvement is more obvious, when
When angle of flare is greater than 10 °, blanking bar phenomenon begins to make moderate progress；When angle of flare is greater than 100 °, blanking bar phenomenon has had bright
Aobvious improvement；When angle of flare is greater than 140 °, blanking bar has been basically eliminated.Only when diffusion angle is bigger, entire optics
The light transmittance of system is lower, and under the conditions of the display backlight of equal-wattage, the brightness of display is lower, therefore more excellent
The range of choosing is: 10 °~130 °.What needs to be explained here is that: Figure 11 is simply to illustrate that bright by modulated pixel light emission
The distribution trend schematic diagram of degree is not other situations for limiting its distribution, as long as in fact, passing through diffusion type optical element
After modulation, light emission luminance all angles be evenly distributed (distribution of approximate Lambertian body) be all this patent protection scope.
(3) it solves the problems, such as total reflection, increases viewing visual angle
Due to the invertibity of optical path, for convenience, optical path analysis is carried out by starting point of human eye below.Such as Figure 12,13 institutes
Show, when optical flat 104 and transmission-type prism optical element 105-A are not fitted closely there are when air, human eye is with wide-angle
When being observed by 105-A, it is incident on the interface of the element and air after the refraction that the light of sending passes through 105-A, if
The incidence angle of the light is more than or equal to the critical angle of total reflection, then can be there is a phenomenon where being totally reflected, and such human eye can not just pass through
105-A sees the content on display, to reduce viewing visual angle.
Similarly, as shown in Figure 14,15, when element 105-A is bonded entirely but without complete between element 103 with element 104
Fitting reduces viewing visual angle there are full transmitting phenomenon when air, then can equally occur.
As shown in Figure 16,17, only diffused component 103, optical flat 104 and transmission-type prism optical element 105-A are complete
Fitting can solve the problems, such as total reflection after being integrally formed formula structure, to increase the viewing visual angle of system.At this point, due to element
103 diffusion has broken total reflection condition, therefore human eye can see the content on display through the integral structure,
Realize the seamless spliced effect in big visual angle.
It needs exist for, it is emphasized that by diffused component 103, optical flat 104 and transmission-type prism optical element 105-A group
At integral type optical texture and display panel between the value range of distance be: 0mm≤d2 < 20mm, the table as d2=0mm
Show and fitted closely together between the integral type optical texture of proposition and display, there are air.
The index path described above being totally reflected is merely illustrative, and is not the protection scope for limiting the patent, real
As long as by the way that diffused component 103, optical flat 104 and transmission-type prism optical element 105-A to be bonded entirely and be integrated on border
Total reflection problem is able to solve to all belong to the protection scope of this patent the case where increasing viewing visual angle.It should be noted that right
In this problem, angle of flare is bigger, and improvement is more obvious, and when angle of flare is greater than 3 °, total reflection problem has made moderate progress,
When angle of flare is greater than 10 °, total reflection problem will not influence viewing visual angle substantially.Therefore, the value range of angle of flare should
It is 3 °~180 °, only when diffusion angle is bigger, the light transmittance of entire optical system is lower, carries on the back in the display of equal-wattage
Under the conditions of light, the brightness of display is lower, therefore more preferred range is: 3 °~130 °.
As shown in figure 18, diffusion type optical element 103 is to there are three types of the diffusion modes of light, respectively point diffusion mode,
The form that the diffusion mode of horizontal or vertical single direction and horizontal vertical two direction are spread simultaneously.Wherein, in horizontal vertical direct expansion
λ 1 is light level angle of flare in scattered signal, and λ 2 is the vertical angle of flare of light, is vertical diffusion as λ 1=0 ° and 2 ≠ 0 ° of λ,
It is horizontal proliferation as 1 ≠ 0 ° of λ and λ 2=0 °, is spread vertically as 1 ≠ 0 ° of λ and 2 ≠ 0 ° of λ for level.It needs exist for illustrating
, for diffusive optical element 103, diffusion angle is bigger, for improving the problems such as image striped lines solves total reflection
It is more advantageous, it is intended merely to guarantee the clarity of image, diffusion angle requires more greatly integral type optical texture proposed by the present invention
With it is closer at a distance from display panel or fit together with display panel.
Due to transmissive optical element 105-A effect meeting so that the image stretch of stitching portion to causing serious image
Deformation, therefore this programme stretch to the image near stitching portion or compression processing is to play the role of compensation, so that spelling
Connect the image transition nature at place, without deformation.In addition, can be into one by the adjusting to stitching portion image and its neighbouring brightness of image
Step improves the uniformity of overall picture brightness, improves display effect.
The above description is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all utilizations
Equivalent structure or equivalent flow shift made by description of the invention and accompanying drawing content is applied directly or indirectly in other correlations
Technical field, be included within the scope of the present invention.
For those of ordinary skill in the art, without departing from the inventive concept of the premise, if can also make
Simple deduction or replace are done, all shall be regarded as belonging to protection scope of the present invention.
Claims (12)
1. a kind of optical system for realizing multi-screen seamless tiled display, it is characterised in that: the system comprises transmission-type prisms
Optical element 105-A, optical flat 104 and diffusion type optical element 103；Wherein, the diffusive optical element 103 and optics are flat
Plate 104, transmission-type prism optical element 105-A are fitted closely, and shown diffusive optical element 103 is located at multi-screen splicing shape
At display screen on；The optical flat 104 is located on the diffusive optical element 103, for connecting transmission-type lens optical
Element 105-A and diffusion type optical element 103；The transmission-type prism optical element 105-A is located at the upper table of optical flat 104
The position for the piece that face face multi-screen is spliced to form makes observer in viewing display system for carrying out refraction modulation to light
It is seen that the image of piece the right and left rather than piece, realize seamless spliced effect, while making edge joint position image when system
It is more smooth.
2. optical system according to claim 1, which is characterized in that described the system also includes optical film material 105-B
The optical film material 105-B and transmission-type prism optical element 105-A constitutes whole be covered on the optical flat 104.
3. optical system according to claim 1, which is characterized in that the main function of diffusion type optical element 103 has: disappearing
Except the amplification bring striped lines due to transmission-type prism optical element 105-A；The brightness for improving stitching portion image, makes
The brightness of image of the brightness of edge joint position image and its neighbouring display area does not have apparent difference, solves the dark of stitching portion image
Band problem, while keeping display panel brightness more uniform, promote viewing experience；The element and optical flat 104, transmission-type prism
Optical element 105-A can solve the total reflection problem of optical system surface after fitting closely, to increase viewing visual angle.
4. optical system according to claim 1, it is characterised in that: the mouth of the transmission-type prism optical element 105-A
Diameter L2 > 10mm.
5. optical system according to claim 1, it is characterised in that: the transmission-type prism optical element 105-A's is every
The depth of a small prism is C1, and the value range of width C2, depth C1 are 0mm < C1 < 2mm；The value range of width C 2 is
0mm < C2 < 2mm；θ 1, θ 2, θ 3 is respectively three angles of prism, wherein the value range of θ 1 is 0 ° of 70 ° of 1 < of < θ, preferably
Range be: 0 ° of < θ 1 < arcsin (1/n), n are the refractive index of material.
6. optical system according to claim 5, it is characterised in that: the transmission-type prism optical element 105-A passes through
The production of UV cure process, material therefor are UV glue；Or the transmission-type prism optical element 105-A is with hot-forming
Technique production, material is plastic resin material；Or the transmission-type prism optical element 105-A makes of glass material,
The glass material includes crown glass, flint glass, dense crown, dense flint glass or LA system glass；In the transmission
For the surface plating optical film of formula prism optical element 105-A come the optical property for part of changing the title of a reign, the optical film includes anti-reflection antireflective film.
7. optical system according to claim 1, it is characterised in that: optical flat 104 by diffusion type optical element 103 and
Transmission-type prism optical element 105-A, which links together, makes three combine together formula structure, the structure with a thickness of d1, range
It is 1mm < d1 < 50mm, which is d2 at a distance from display panel, and range is 0mm≤d2 < 20mm.
8. optical system according to claim 1, it is characterised in that: the optical flat 104 passes through UV curing molding work
Skill production, material therefor are UV glue；Or the optical flat 104 makes of hot-forming technique, material is plastic tree
Rouge material；Or the optical flat 104 makes of glass material, the glass material includes crown glass, flint glass, weight
Crown glass, dense flint glass or LA system glass；On the surface of the optical flat 104, plating optical film is come the optical of part of changing the title of a reign
Can, the optical film includes anti-reflection antireflective film.
9. optical system according to claim 1, which is characterized in that the diffusion way of the diffusion type optical element 103
It include: that the point all spread in all angles is spread, only in the one direction diffusion in horizontally or vertically direction, simultaneously horizontal and perpendicular
Histogram to twocouese diffusion.
10. optical system according to claim 1, it is characterised in that: the diffusion angle of the diffusion type optical element 103
It is bigger, to solving the problems, such as striped lines, the luminance difference of stitching portion image and total reflection advantageously.
11. optical system according to claim 1, it is characterised in that: to piece two sides by way of image procossing
Image carries out stretching or compression processing to compensate transmission-type prism optical element 105-A deformation caused by image, so that spelling
Connect place's image it is more smooth, without deformation.
12. optical system according to claim 1, it is characterised in that: by bright to stitching portion image and its neighbouring image
The adjusting of degree further improves the uniformity and blanking bar of overall picture brightness, improves display effect.
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| CN201811616376.XA CN109377892A (en) | 2018-12-26 | 2018-12-26 | A kind of optical system for realizing multi-screen seamless tiled display |
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| CN201811616376.XA CN109377892A (en) | 2018-12-26 | 2018-12-26 | A kind of optical system for realizing multi-screen seamless tiled display |
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| CN110456552A (en) * | 2019-08-13 | 2019-11-15 | 杨冠男 | A kind of large scale seamless tiled display system |
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| CN114333610A (en) * | 2022-01-04 | 2022-04-12 | 京东方科技集团股份有限公司 | Tiled display panel and display device |
| CN114730536A (en) * | 2019-10-28 | 2022-07-08 | 康宁公司 | Tiled display with optically blurred seams |
| WO2022205854A1 (en) * | 2021-03-31 | 2022-10-06 | 京东方科技集团股份有限公司 | Display module, display device, mold, and glue injecting machine |
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