CN110349513A - A kind of LED display and production method eliminated moire fringes and improve light mixing effect - Google Patents
A kind of LED display and production method eliminated moire fringes and improve light mixing effect Download PDFInfo
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- CN110349513A CN110349513A CN201910652256.3A CN201910652256A CN110349513A CN 110349513 A CN110349513 A CN 110349513A CN 201910652256 A CN201910652256 A CN 201910652256A CN 110349513 A CN110349513 A CN 110349513A
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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
- G09F9/33—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 being semiconductor devices, e.g. diodes
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Abstract
The present invention relates to LED screen technical fields, especially a kind of LED display eliminated moire fringes and improve light mixing effect, LED illuminator including array combination at a certain distance, whole LED display is formed by combining luminous body array, the LED illuminator includes LED light emitting diode, lenticular body and pcb board, LED light emitting diode is arranged on pcb board, lenticular body is arranged on pcb board, and lenticular body is located on entire LED light emitting diode, the lenticular body includes lens carrier and lens arrangement, lens carrier is mounted on pcb board after being provide with entire LED light emitting diode, lens arrangement is located at the surface fixed setting of lens carrier, the present invention is able to solve LED display with moire fringes, the bad problem of viewing effect.
Description
Technical field
The present invention relates to LED screen technical field, specific field is that a kind of LED for eliminating moire fringes and improving light mixing effect is aobvious
Display screen and production method.
Background technique
As the application field of LED display is more and more extensive, but LED display is due to its principle of luminosity and encapsulation knot
Structure, assembling form are limited, at work caused by dazzle and to the stimulation of human eye, shooting moire fringes phenomenon, seriously affect sight
It sees effect, and because is not suitable for watching for a long time, and cannot prevent that installs, transports and use to collide with the reason of blue light energy
Deng.The guard section of existing product is mostly sealed with casting glue, is generally radiated bad, locates LED for a long time in the high temperature environment, the service life
It does not grow, and is to generate moire fringes phenomenon when preventing LED display product from shooting, typically after the completion of display screen is constructed, lead to
It crosses and makes special steel construction piece to install anti-moire fringes pad pasting, to reach the practice of anti-moire fringes effect, construction and installation are complicated,
And because of the Penetration ration problem of anti-moire fringes pad pasting itself, cause energy consumption higher；
The shortcomings that prior art:
1, LED display refers to the display assembled using light emitting diode by surface mounting technology and mounting structure etc.
Product, since its principle of luminosity is different from LCD display, luminous intensity is high, and expressing gradation when the display imaging contents of formation
It is on the weak side, and it is easy to produce dazzle when viewing for a long time, because the blue light energy of LED light (light emitting diode) is stronger, human eye is pierced
Swash relatively by force, is not suitable for watching for a long time
2, the existing LED display with safeguard function substantially uses encapsulating or front to install safety glass etc.
The protection method that (or other such as PC materials) is made, can not thoroughly prevent display unit in installation, transport and use
The problems such as anti-mounting structure that collides in the process is complicated, and common LED display products and encapsulating class product itself cannot use
Aqueous or other with corrosive liquids cleaning, wherein encapsulating class product is also easy to cause material to change colour due to factors such as ultraviolet lights
And LED display is made to show that colour cast problem occurs for content, after being handled there are also encapsulating, due to the bad caused LED lamp longevity of radiating
Life shortens
3, the pad pasting class LED display product with even light effect, it is higher to installation requirement because its structure installs complexity,
And because of the difference of realization principle, even light effect is not high, and higher to display screen display brightness loss late
4, existing Universal LED display screen is that light-emitting diode is welded on certain spacing using surface mount technology
PCB surface and a kind of display technology (product) formed, because its arrangement mode has a certain rule, and with current most of number
Code camera, the CCD photosensitive element spatial frequency of video camera are close, under the conditions of major part, can generate moire fringes.
Summary of the invention
It is existing to solve the purpose of the present invention is to provide a kind of LED display eliminated moire fringes and improve light mixing effect
There is in technology LED display that should not watch for a long time and the problem of blue light hurts eye, LED display product shooting moire fringes.
To achieve the above object, the invention provides the following technical scheme: a kind of elimination moire fringes and improving light mixing effect
LED display, the LED illuminator including array combination at a certain distance to form whole LED by combining luminous body array
Display screen, the LED illuminator include LED light emitting diode, lenticular body and pcb board, and LED light emitting diode is arranged in PCB
On plate, lenticular body is arranged on pcb board, and lenticular body is located on entire LED light emitting diode, and the lenticular body includes lens
Bracket and lens arrangement, lens carrier are mounted on pcb board after being provide with entire LED light emitting diode, and lens arrangement is located at lens
The surface of bracket is fixedly installed.
Preferably, the lens arrangement is arranged in pyramidal structure.
Preferably, one end that the lens carrier is located at pcb board is provided with thermal trough.
Preferably, on the pcb board correspond to lens carrier at be provided with locating slot, be provided in the locating slot with
The location structure of lens carrier matching positioning.
Preferably, it is provided with bonded adhesives in the locating slot, is fixedly connected with lens carrier with pcb board by bonded adhesives.
Preferably, the lenticular body is made of hydrophobic polycarbonate.
Preferably, the lens carrier is internally corresponding to the cavity wall at LED light emitting diode in 10 grades and with glazing
Slippery setting.
Preferably, the lens carrier is internally corresponding to be arranged at the top of the cavity wall at LED light emitting diode in plane.
Preferably, the lens carrier outer surface is arranged in frosting.
To achieve the above object, the present invention also provides following technical solutions: one kind is for eliminating moire fringes and improving light mixing
The lenticular body production method of the LED display of effect, the steps include:
(1) whole made by hydrophobic polycarbonate for substrate of lenticular body is formed；
(2) lower part of lenticular body is arranged in square, and radiating groove is arranged in the bottom of square, and square bottom is inwardly set
Set the cavity for placing LED light emitting diode；
(3) top of lenticular body, both the top of square was in tower-shaped setting；
(4) its pyramidal structure part, after first designing the lens focus focal length similar to " crescent " lens, then will by equal altitude method
Lens overlapping, and equiangularly the normal direction of normal direction light source luminescent point extends and combines after restraining lens mirror body overall diameter degree
Molding, formed multilayer lens combination at tower-shaped lens arrangement；
(5) lens carrier partial outer face is handled by frosted, so that forming reflective surface inside lens carrier.
Compared with prior art, the beneficial effects of the present invention are:
1, solve the problems, such as that existing LED display should not be watched for a long time and blue light hurts eye；
2, it solves existing LED display and increases colour cast and bad, the simplified mounting structure that radiates after safeguard function；
3, luminance loss and the even light effect for solving pad pasting class LED product are bad；
4, it solves existing LED display product and shoots moire fringes；
LED light source is changed to special surface body to shine, without pixel granular sensation when showing image, eliminates moire fringes, it is common aobvious
Display screen generallys use LED as light source for showing picture material, shines for point, therefore pixel granular sensation is had in perception, and
And because pixel array granular sensation, the generally existing moire fringes phenomenon of common display screen, this product pass through lens arrangement and material
Mixed Design eliminates moire fringes without pixel granular sensation when can make to show image；
Increase in the material and absorb the blue light factor, substantially reduce blue light energy intensity, can watch for a long time and not hurt eye production
Before product are fixed on the lamp bead of LED display, surface is the design of multilayer lens arrangement, the external force generated when colliding with is decomposed, with drop
Collide with situation of the low display screen in installation, transport and maintenance；
Surface is multilayer lens arrangement stacking, the modified increased light diffusing agent of compounding ingredient etc., shows that product by traditional LED
The luminous more curved surfaces for becoming lenticular body of the point of display screen shine, and the pleasing to the eye ray density under same light-intensity conditions can be made to increase by 4 times,
With the use of the control chip of low voltage drive, keep energy consumption lower, it is more energy saving；
The use of hydrophobic polycarbonate is substrate, by the anti-UV ingredient of increase, improves the anti-UV characteristic of product, make product in length
Time is not susceptible to metachromatism after；
It designs and assembles using integrated structure, be not necessarily to integral product without complex steel structure engineering, after factory
The products such as moire fringes pad pasting are customized, directly by after simple retaining mechanism connection unit product, that is, can be used.
Detailed description of the invention
Fig. 1 is mounting structure schematic diagram of the invention；
Fig. 2 is surface texture algorithm schematic diagram of the invention；
Fig. 3 is lens carrier structural schematic diagram of the invention；
Fig. 4 is a variety of substitution lenticular body structure charts of embodiments of the present invention；
Fig. 5 is the substitution lenticular body structure chart of embodiments of the present invention.
In figure: 1, LED light emitting diode；2, pcb board；3, lens carrier；4, lens arrangement；5, thermal trough；6, locating slot；
7, location structure；8, bonded adhesives.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1 to 3 is please referred to, the present invention provides a kind of technical solution: a kind of LED for eliminating moire fringes and improving light mixing effect
Display screen, the LED illuminator including array combination at a certain distance to form whole LED and show by combining luminous body array
Display screen, the LED illuminator include LED light emitting diode 1, lenticular body and pcb board 2, and LED light emitting diode 1 is arranged in PCB
On plate 2, lenticular body is arranged on PCB plate 2, and lenticular body is located on entire LED light emitting diode 1, and the lenticular body includes
Lens carrier 3 and lens arrangement 4, lens carrier 3 are mounted on pcb board 2 after being provide with entire LED light emitting diode 1, lens knot
Structure 4 is located at the surface fixed setting of lens carrier 3.
LED forms array at a certain distance, after being equipped with low-voltage, energy-saving driving chip composition basic display unit,
Lenticular body is installed on LED one by one.
The lens arrangement 4 is arranged in pyramidal structure.
One end that the lens carrier 3 is located at pcb board 2 is provided with thermal trough 5,5 direction vertical and horizontal face of thermal trough,
And cavity is formed with pcb board 2, cavity height is no more than lamp body luminous flat close to LED lamp light-emitting area, for making
LED light body heat content can pass through well " stack effect ", and the heat that LED itself is generated quickly is exported, can be normal by product
Temperature when work reduces, and compared to common LED display screen and the LED display protected using encapsulating mode, can extend LED light
Service life (attached drawing 3).
On the pcb board 2 correspond to lens carrier 3 at be provided with locating slot 6, be provided in the locating slot 6 with thoroughly
The location structure 7 of the matching positioning of mirror support 3, location structure 7 include but is not limited to positioning column, pin and the assembling with positioning function
Device.
It is provided with bonded adhesives 8 in the locating slot 6, is fixedly connected with lens carrier 3 with pcb board 2 by bonded adhesives 8, is glued
Connecing glue 8 is that UV solidification glue includes but the type and characteristic of unlimited glue.
The lenticular body is made of hydrophobic polycarbonate, and hydrophobic polycarbonate is used to do modification for substrate, is modified material
Increase anti-UV material, the material that glows, light diffusing agent and blue light absorption factor etc. in material, for increasing the even light in said lens body
Effect and the raising anti-UV characteristic of product, while so that product is not susceptible to discoloration in use, reduce blue light energy to greatest extent
Amount, making display screen body, eye is not hurt in viewing for a long time, simultaneously because the hydrophobic property of material itself, product subsurface can be direct when clearing up
It is cleaned using neutral solution.
The lens carrier 3 is internally corresponding to the cavity wall at LED light emitting diode 1 and sets in 10 grades and the above smoothness
Set, 3 outer surface of lens carrier is arranged in frosting, by outer surface frosted and material itself it is modified in increased blue light
Absorption factor forms reflective mirror effect, (includes for reflecting the low intense part in LED light field in " tower-shaped " lens interior
Inner cavity), for generating the light mixing cavity of RGB different wave length light, while assisting frosted and the product material of product external surfaces
Increased light diffusing agent in modifying process, to realize even light effect.
The lens carrier 3 is internally corresponding to be arranged at the top of the cavity wall at LED light emitting diode 1 in plane.
Shown in Fig. 2, a kind of lenticular body production method of the LED display for eliminating moire fringes and improving light mixing effect,
It the steps include:
(1) whole made by hydrophobic polycarbonate for substrate of lenticular body is formed；
(2) lower part of lenticular body is arranged in square, and radiating groove is arranged in the bottom of square, and square bottom is inwardly set
Set the cavity for placing LED light emitting diode 1；
(3) top of lenticular body, both the top of square was in tower-shaped setting；
(4) its pyramidal structure part, after first designing the lens focus focal length similar to " crescent " lens, then will by equal altitude method
Lens overlapping, and equiangularly the normal direction of normal direction light source luminescent point extends and combines after restraining lens mirror body overall diameter degree
Molding, formed multilayer lens combination at tower-shaped lens arrangement 4；
(5) 3 partial outer face of lens carrier is handled by frosted, so that forming reflective surface inside lens carrier 3.
Lens component is different from the contour of traditional " Fresnel Lenses " using a kind of structure similar to " Fresnel " lens
The lens arrangement 4 of degree method design, the present invention is using a kind of complete by equal altitude method cutting convex lens algorithm with " Fresnel Lenses " structure
Lens after the lens focus focal length of similar " crescent " lens first designed, then are overlapped by equal altitude method by complete different algorithm, and
Equiangularly the normal direction of normal direction light source luminescent point extends and restrains combination forming after lens mirror body overall diameter degree, quite
In multilayer lens combination at product external structure (structure algorithm model is shown in attached drawing 2), to form product surface similar to " tower-shaped
Rank (lower referred to as " tower-shaped " structure) " (including but not limited to positive spherical steps surface, aspherical more curve step surfaces, parabolic
Linear more surface compositions), the lens combination stacking number of " tower-shaped " structure is with the luminous intensity distribution curve and optical mode of LED light
Type calculates, and main function has, and 1, to reduce LED lamp itself shine that be formed by the high surrounding of center brightness bright for light field
Spend low situation；2, for enhancing the resistance to compression and anticollision ability of product.Its " tower-shaped " structure size includes but is not limited to LED screen
Shield body pel spacing itself, generated by new algorithm, " tower-shaped " array of structures spacing can be not equal to LED display screen body and shine
1 spacing of diode.The form of " tower-shaped " lens combination includes but is not limited to extend to light source normal direction, thicken extension, can also
With with identical algorithms to doing " interior tower-shaped " structure inside light source normal direction, lens body function phase in realization principle and the present invention
Together.
Lenticular body structure itself has even light diffusing, so that product is not limited to LED lamp surface light emitting, light source is converted to
Special surface shines, and becomes the regular lattice array of LED with the luminous curved surface of the body of illuminator array, to destroy generation mole
The space frequency of line eliminates moire fringes.The light transmission of the removal moire fringes adhesive cover products of traditional LED display surface installation
Rate is generally between 30%~40%, is needed to correspondingly increase the brightness of LED light and be can be only achieved normal display effect, this hair
Original point light source energy is evenly distributed to " tower-shaped " portion and surface in vivo by " tower-shaped " structure lens in bright, and light percent of pass can
To reach 70% or more, entire display unit is made to no longer need to be highlighted in a manner of improving energy consumption to reach normal display effect
Fruit, more energy efficient environmental protection.
As shown in figure 4, the substitution lenticular body structure of embodiment, by original " tower-shaped " structural body extended surface lenticule battle array
Column, microlens array for convex lens or can be equal to the Fresnel Lenses of convex lens, more toroidal lens, by calculating focal length
Be equal to ball but or Fresnel Lenses aspherical body lens, polygon mirror, achieved by display effect and the present invention
Involved in structure and principle it is identical (attached drawing 4), design structure form be " tower-shaped " body structure surface increase to normal direction
" ball is dotted " array is formed by angularly extending, array format can be round, rectangle or Polygonal arrays mode,
When array is rectangle or polygon, circular array, can not heart array, can different pitch arrays, " ball is dotted " structure is body formed
In original " tower-shaped " structural body surface, including but not limited to ball is dotted, and such as strip, cyclic annular or other polygonized structures can be real
Now this alternative solution effect, and structure forms form and is not limited only to prolong light source normal direction evagination, by technical solution of the present invention
Principle in introduction, structure type can be retracted to light source normal direction, used principle and realization effect and this substitution
Scheme is identical；Its " ball is dotted " structural body takes shape at the top of original structure inner wall, and including but not limited to ball is dotted, such as strip, ring
This alternative solution effect can be achieved in shape or other polygonized structures, and structure forms form and is not limited only to prolong light source normal
Direction evagination, by the principle in the introduction of technical solution of the present invention 4, structure type can be retracted to light source normal direction, be made
Principle and realization effect are identical as this alternative solution.According to alternative solution structure herein, can preferably it divide
The extraneous power collided with of solution, surface " ball the is dotted " structure formed by lens arrangement 4 of its complexity can be real when showing content
Existing microlens array disperses original light, that is, enhances the even light effect of display, and further increase former display brightness, by even light efficiency
Fruit is decomposed into the highlight bar of multiple spot array, preferably to eliminate shooting moire fringes phenomenon.
As shown in figure 5, the substitution lenticular body structure of embodiment, will directly weigh similar to the multiple lens of " crescent " lenticular body
Folded, the former holder part of reservation is constant, and R1, R2, R3, R4 are all different in figure, and 0 is the center of circle of lens design, and L2 is LED light
Highly, a is the angle of the mean value conversion obtained according to light transmittance/LED luminous intensity of material, be may be the same or different；
The lenticular body of every layer shown in figure similar " crescent " lens is different-thickness, different curvature, different focal length, the multilayer of decentraction
Lens combination can according to need by same thickness, different curvature in actual product, the mode group that the different focal length center of circle is harmonious
Close (enumerate a kind of structure altogether herein, this programme includes but is not limited to combination of the above mode, on algorithm, above-mentioned any combination mode
The result obtained is identical realization effect and function).
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (10)
1. a kind of LED display eliminated moire fringes and improve light mixing effect, it is characterised in that: including array group at a certain distance
The LED illuminator of conjunction to form whole LED display by combining luminous body array, and the LED illuminator includes LED
Light emitting diode, lenticular body and pcb board, LED light emitting diode are arranged on pcb board, and lenticular body is arranged on pcb board, and thoroughly
Mirror body is located on entire LED light emitting diode, and the lenticular body includes lens carrier and lens arrangement, and lens carrier is provide with whole
It is mounted on pcb board after a LED light emitting diode, lens arrangement is located at the surface fixed setting of lens carrier.
2. a kind of LED display eliminated moire fringes and improve light mixing effect according to claim 1, it is characterised in that:
The lens arrangement is arranged in pyramidal structure.
3. a kind of LED display eliminated moire fringes and improve light mixing effect according to claim 1, it is characterised in that:
One end that the lens carrier is located at pcb board is provided with thermal trough.
4. a kind of LED display eliminated moire fringes and improve light mixing effect according to claim 1, it is characterised in that:
Correspond at lens carrier on the pcb board and be provided with locating slot, is provided with to match with lens carrier in the locating slot and determine
The location structure of position.
5. a kind of LED display eliminated moire fringes and improve light mixing effect according to claim 4, it is characterised in that:
It is provided with bonded adhesives in the locating slot, is fixedly connected with lens carrier with pcb board by bonded adhesives.
6. a kind of LED display eliminated moire fringes and improve light mixing effect according to claim 1, it is characterised in that:
The lenticular body is made of hydrophobic polycarbonate.
7. a kind of LED display eliminated moire fringes and improve light mixing effect according to claim 1, it is characterised in that:
The lens carrier is internally corresponding to the cavity wall at LED light emitting diode and is arranged in 10 grades and the above smoothness.
8. a kind of LED display eliminated moire fringes and improve light mixing effect according to claim 7, it is characterised in that:
The lens carrier is internally corresponding to be arranged at the top of the cavity wall at LED light emitting diode in plane.
9. a kind of LED display eliminated moire fringes and improve light mixing effect according to claim 7, it is characterised in that:
The lens carrier outer surface is arranged in frosting.
10. a kind of lenticular body production method of the LED display for eliminating moire fringes and improving light mixing effect, feature exist
In: it the steps include:
(1) whole made by hydrophobic polycarbonate for substrate of lenticular body is formed；
(2) lower part of lenticular body is arranged in square, and radiating groove is arranged in the bottom of square, and use is inwardly arranged in square bottom
In the cavity for placing LED light emitting diode；
(3) top of lenticular body, both the top of square was in tower-shaped setting；
(4) equal altitude method after first designing the lens focus focal length similar to " crescent " lens, then is pressed for lens in its pyramidal structure part
Overlapping, and equiangularly the normal direction of normal direction light source luminescent point extends and restrains combination forming after lens mirror body overall diameter degree,
Formed multilayer lens combination at tower-shaped lens arrangement；
(5) lens carrier partial outer face is handled by frosted, so that forming reflective surface inside lens carrier.
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| CN201910652256.3A CN110349513A (en) | 2019-07-19 | 2019-07-19 | A kind of LED display and production method eliminated moire fringes and improve light mixing effect |
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