CN104048222A - Area light source packaging LED and 3D-LED display system with same - Google Patents
Area light source packaging LED and 3D-LED display system with same Download PDFInfo
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Abstract
The invention relates to an area light source packaging LED and a 3D-LED display system with the air light source packaging LED. The air light source packaging LED comprises a bearing board, N LED chips, a barrier frame, a plurality of reflection films and optical filler, wherein the bearing board is provided with LED cathode interfaces and anode interfaces, and cathodes of the LED chips and anodes of the LED chips are connected to the cathode interfaces and the anode interfaces on the bearing board. The LED chips are located in the barrier frame. The reflection films are arranged on the inner wall of the barrier frame. The barrier frame is filled with the optical filler. The outer surface, facing audiences, of the optical filler further comprises a light equalization layer. When the LED is in operation, an area light source is obtained by an observer. According to the air light source packaging LED and the 3D-LED display system with the air light source packaging LED, light emitted by an LED screen is even and soft, a black matrix is avoided, and the problems of moire fringes and the like are solved in an existing 3D-LED at the same time.
Description
Technical field
The present invention relates to LED display field, particularly a kind of area source packaged LED and 3D-LED display system thereof.
Background technology
If Fig. 1 is existing LED screen structure, we can see between LED pixel (001) and have black matrix (002), certainly will shine into like this problems such as aperture opening ratio is little, light is not soft, spot light is more dazzling.Meanwhile, when for 3D-LED being, due to the black matrix existing and the periodicity between grating fringe, arrange and can cause Moire fringe, affect beholder's viewing effect.
Prior art solves the black matrix of LED or solution 3D-LED Moire fringe also exists some problems.The naked-eye stereoscopic display device without More's interference stripes and the method that provide as CN200710048223.5, one of its structure is to coordinate to eliminate More's interference stripes by diffuser screen with raster pattern 3D naked-eye stereoscopic display, after its structure, be by eliminating More's interference stripes in the mode of grating surface plating anti-reflection film, although these two kinds of methods can be crossed solution Moire fringe, but the pixel between adjacent can be crosstalked, due to the effect of diffuser screen or anti-reflection film, the light of next door pixel can be gone to generation mixed light in this pixel, the impact bringing for 2D shows is that picture fogs, image quality variation, for 3D-LED and Yan Zehui does not observe stereoeffect.In its description, do not propose to solve cross-interference issue and the solution between neighbor simultaneously yet.
To sum up, there is black matrix in existing LED screen, again because LED pixel is that point is luminous, so luminous more dazzling.Meanwhile, in the time of in being applied to 3D-LED three-dimensional display system, black matrix and grating slit can produce Moire fringe affects viewing effect.So the problem that the present invention mainly solves evenly softens for LED is shielded to luminous change, and solve black matrix, simultaneously also solve the problems such as Moire fringe in 3D-LED, and a kind of improvement and the optimization of the cross-interference issue that brings of the solution of carrying for some other patents.
Summary of the invention
The object of the present invention is to provide a kind of area source packaged LED and 3D-LED display system thereof, make LED shield luminous change uniformity and soften, and by reducing the black matrix of LED, solve in 3D-LED the Moire fringe problem producing due to black matrix and grating interference.
For achieving the above object, technical scheme of the present invention is: a kind of area source packaged LED, comprises that a loading plate contains LED negative electrode and anode interface on described loading plate; N LED chip, the negative electrode of described LED chip and anode connect respectively negative electrode and the anode interface on described loading plate; One barrier frame, it is inner that described LED chip is positioned at described barrier frame; Some reflectance coatings, described reflectance coating is arranged on described barrier frame inwall; And be filled in the optical filling body in barrier frame, and described optical filling dignity also comprises the equal photosphere of one deck to spectators' outer surface, wherein N is natural number, and N=1 or N >=3.
In an embodiment of the present invention, described equal photosphere is the optical texture of described optical filling external surface processingization; Wherein, the optical texture of described processing comprises: the form optical texture with unrestrained transmitting or scattering properties is processed in etching processing and frosted.
In an embodiment of the present invention, described equal photosphere is the optical material being independent of outside described optical filling body, and described equal photosphere is arranged on described optical filling body; Described optical material comprises: polymer scattering layer, phosphor powder layer or quantum optices film.
In an embodiment of the present invention, described optical filling body is comprised of one deck obturator at least.
In an embodiment of the present invention, described N is 3, and described LED chip comprises three kinds of monochromatic LED chips of red, green, blue, for color LED screen display, shows.
In an embodiment of the present invention, described N is 1, and described LED chip adopts UV-LED chip; Described equal photosphere is monochromatic phosphor powder layer, and the monochromatic fluorescent material of described monochromatic phosphor powder layer comprises: red light fluorescent powder, blue light fluorescent powder and green light fluorescent powder, be respectively used to UV light to be converted into the monochromatic light of red, green and blue, and UV-LED spot light is changed into area source.
In an embodiment of the present invention, described N is 1, and described LED chip adopts blue-light LED chip; Described equal photosphere comprises monochromatic phosphor powder layer and the equal photosphere of optical texture; The monochromatic fluorescent material of described monochromatic phosphor powder layer comprises: red light fluorescent powder and green light fluorescent powder, be respectively used to blue light to be converted into red and green monochromatic light; The equal photosphere of described optical texture comprises: frosted processing or etching processing obturator outer surface.
In an embodiment of the present invention, described monochromatic phosphor powder layer is replaceable is monochromatic quantum dot optics film.
In an embodiment of the present invention, described area source packaged LED is applicable to whole screen LED screen; Described barrier frame is square body or non-square body; When described barrier frame is non-square body, between adjacent described barrier frame, be provided with for dispelling the heat, cooling heat dissipation channel.
The present invention also provides a kind of 3D-LED display system that adopts area source packaged LED as described above, comprises LED screen, a spectro-grating and a circuit drives assembly of the described area source packaged LED of an employing.
Compared to prior art, the present invention has following beneficial effect: the present invention utilizes equal photosphere that LED spot light is diverged to area source, makes pixel softer, also makes LED shield black matrix and eliminates or reduce; Utilize barrier to isolate adjacent light source simultaneously, prevent from crosstalking; Because LED shields the elimination of black matrix or reduces, also solve the Moire fringe problem in 3D-LED display system again, improved stereoscopic display performance.
Accompanying drawing explanation
Fig. 1 is traditional LED screen structural representation.
A kind of area source packaged LED structure schematic diagram that Fig. 2 provides for first embodiment of the invention.
A kind of area source packaged LED structure schematic diagram that Fig. 3 provides for second embodiment of the invention.
A kind of area source packaged LED structure schematic diagram that Fig. 4 provides for third embodiment of the invention.
A kind of area source packaged LED structure schematic diagram that Fig. 5 provides for fourth embodiment of the invention.
A kind of three-dimensional display system without Moire fringe based on slit grating that Fig. 6 provides for fifth embodiment of the invention.
A kind of three-dimensional display system without Moire fringe based on cylindrical grating that Fig. 7 provides for sixth embodiment of the invention.
In figure, 001 is LED pixel, and 002 is black matrix,
011,021,031,041 is loading plate,
012,022,032 is LED chip, and 042,0420 is blue-light LED chip,
013,023,033,043 is barrier frame,
014,024,034,044 is reflectance coating,
015,025,035,045 is optical filling body,
0151 is elementary packed layer, and 0152 is secondary packed layer,
016,026,036,046 is equal photosphere,
0361 is red light fluorescent powder layer, and 0362 is blue light emitting phosphor layer, and 0363 is green light fluorescent powder layer,
017,037,047 is heat dissipation channel,
0461 is red light fluorescent powder layer, and 0462 is green light fluorescent powder layer, and 0463 is diffuse reflection optics structure,
51,61 is circuit drives assembly, and 52,62 is LED screen, and 53 is slit grating, and 63 is Lenticular screen.
The specific embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is specifically described.
The invention provides a kind of area source packaged LED, comprise, a loading plate, contains LED negative electrode and anode interface on described loading plate; N LED chip, the negative electrode of described LED chip and anode connect respectively negative electrode and the anode interface on described loading plate; One barrier frame, it is inner that described LED chip is positioned at described barrier frame; Some reflectance coatings, described reflectance coating is arranged on described barrier frame inwall; And be filled in the optical filling body in barrier frame, and described optical filling dignity also comprises the equal photosphere of one deck to spectators' outer surface, when LED works, observer obtains flat light source; Wherein N is natural number, and N=1 or N >=3.
The present invention simultaneously also provides a kind of 3D-LED display system that adopts area source packaged LED as described above, comprises LED screen, a spectro-grating and the circuit drives assembly of the described area source packaged LED of an employing; Described spectro-grating comprises slit grating and Lenticular screen; It is little that the LED of described area source packaged LED shields black matrix, for stereoscopic display, can effectively alleviate Moire fringe.
Be below specific embodiments of the invention.
The first embodiment
As Fig. 2, a kind of area source packaged LED is provided in first embodiment of the invention, comprising:
One loading plate (011), contains LED negative electrode and anode interface on described loading plate (011);
N LED chip (012), the negative electrode of described LED chip (012) and anode connect respectively negative electrode and the anode interface on described loading plate (011);
One barrier frame (013), described LED chip (012) is positioned at described barrier frame (013) inside;
Some reflectance coatings (014), described reflectance coating (014) is arranged on described barrier frame (013) inwall;
And the optical filling body (015) that is filled in (removing reflectance coating (014) region) in barrier frame (013), described optical filling body (015) also comprises the equal photosphere of one deck (016) towards spectators' outer surface, when LED works, observer obtains flat light source;
Furthermore, its equal photosphere (016) of a kind of area source packaged LED provided by the invention can be the optical texture of described optical filling external surface processingization; Can process institute's formations by etching processing or frosted has to overflow and launches or the optical texture of scattering properties; Preferred diffuse reflection optics structure in the present embodiment, as shown in Figure 2;
Again furthermore, a kind of area source packaged LED provided by the invention, described optical filling body (015) can be one deck, two-layer or multilayer composition, as the present embodiment adopts two-layer filling mode, elementary packed layer (0151) is at close LED chip place, secondary packed layer (0152) is arranged on described elementary packed layer (0151), and elementary packed layer (0151), for encapsulating fixed L ED chip (012), also facilitates the filling of secondary packed layer (0152) simultaneously;
Again furthermore, a kind of area source packaged LED provided by the invention, its LED chip (012) can be single-chip or multi-chip, can be monochromatic LED, also can be for multi-colored led, as red-green-blue.Preferably comprise in the present embodiment the LED chip of red, green, blue three primary colours, for color LED screen display, show;
It is worth mentioning that a kind of area source packaged LED provided by the invention can be used for whole screen LED screen; Described barrier frame (014) is square body or non-square body; When described barrier frame (014) is non-square body, between adjacent described barrier frame (014), be provided with for dispelling the heat, cooling heat dissipation channel (017); As Fig. 2, preferred tapered barrier frame (014), comprises heat dissipation channel (017) between corresponding adjacent LED pixel in the present embodiment.
The second embodiment
As shown in Figure 3, in second embodiment of the invention, provide a kind of area source packaged LED, comprising:
One loading plate (021), contains LED negative electrode and anode interface on described loading plate (021);
N LED chip (022), the negative electrode of described LED chip (022) and anode connect respectively negative electrode and the anode interface on described loading plate (021);
One barrier frame (023), described LED chip (022) is positioned at described barrier frame (023) inside;
Some reflectance coatings (024), described reflectance coating (024) is arranged on described barrier frame (023) inwall;
And the optical filling body (025) that is filled in (removing reflectance coating (024) region) in barrier frame (023), described optical filling body (025) also comprises the equal photosphere of one deck (026) towards spectators' outer surface, when LED works, observer obtains flat light source;
Furthermore, a kind of area source packaged LED provided by the invention, described in it, all photosphere (026) is to be independent of the optical material outside described optical filling body (025), described equal photosphere (026) is arranged on described optical filling body (025), described optical material comprises: polymer scattering layer, phosphor powder layer or quantum optices film; Preferred polymers scattering layer in the present embodiment, as Fig. 3.
Further, a kind of area source packaged LED provided by the invention, described in it, optical filling body (025) can be one deck, two-layer or multilayer obturator composition; For saving into product cost, the individual layer packed layer of the disposable injection of the preferred obturator of the present embodiment;
Again furthermore, a kind of area source packaged LED provided by the invention, its LED chip can be single-chip or multi-chip, can be monochromatic LED, also can be for multi-colored led, as red-green-blue.For saving into product cost, preferred monochromatic red LED chip in the present embodiment.
The present embodiment, for smaller screen low-end product, is considered production cost, so do not establish heat dissipation channel.
The 3rd embodiment
As shown in Figure 4, in invention the 3rd embodiment, provide a kind of area source packaged LED, comprising:
One loading plate (031), contains LED negative electrode and anode interface on described loading plate (031);
N LED chip (032), the negative electrode of described LED chip (032) and anode connect respectively negative electrode and the anode interface on described loading plate;
One barrier frame (033), described LED chip (032) is positioned at described barrier frame (033) inside;
Some reflectance coatings (034), described reflectance coating (034) is arranged on described barrier frame (033) inwall;
And the optical filling body (035) that is filled in (removing reflectance coating (034) region) in barrier frame (033), described optical filling body (035) also comprises the equal photosphere of one deck (036) towards spectators' outer surface, when LED works, observer obtains flat light source;
Furthermore, in the present embodiment, described equal photosphere (036) is that the optical material being independent of outside described optical filling body (035) is made, described equal photosphere (036) is arranged on optical filling body (035), described equal photosphere (036) material can be fluorescent material or quantum optices film, in the present embodiment preferred fluorescent material;
As shown in Figure 4, again furthermore, described LED chip (032) adopts UV-LED chip, described equal photosphere (036) comprises the monochromatic phosphor powder layer of many groups, be respectively red light fluorescent powder layer (0361), green light fluorescent powder layer (0362) and blue light emitting phosphor layer (0363), shown in figure, three sub-pixels are from left to right respectively rgb pixels.Described monochromatic phosphor powder layer effect one is respectively UV light to be converted into the monochromatic light of red, green and blue, and effect two is UV-LED spot light to change into area source.
Further, a kind of area source packaged LED provided by the invention, described in it, optical filling body (035) can be one deck, two-layer or multilayer obturator composition; For saving into product cost, the individual layer packed layer of the disposable injection of the preferred obturator of the present embodiment;
It is worth mentioning that a kind of area source packaged LED provided by the invention can be used for whole screen LED screen; Described barrier frame (033) is square body or non-square body; Described barrier frame (033) is non-square body, is provided with for dispelling the heat, cooling heat dissipation channel (037) between adjacent described barrier frame (033); As Fig. 3, preferred trapezoidal barrier frame in the present embodiment.
The 4th embodiment
As shown in Figure 5, a kind of area source packaged LED that fourth embodiment of the invention provides, to make UV-LED chip into blue-light LED chip (042) and (0420), corresponding blue-ray LED sub-pixel does not need to add phosphor powder layer, the substitute is the diffuse reflection optics structure (0463) that optical filling body (045) outer surface is provided as provided in embodiment mono-; In the present embodiment, blue light is to adopt the outer surface of optical filling body (045) to be carried out to frosted to dissolve to produce diffuse reflection optics structure (0463); The blue light that corresponding red, green LED sub-pixel adopts blue-light LED chip to produce excites respectively red light fluorescent powder layer (0461), green light fluorescent powder layer (0462) gained.
As shown in Figure 5, what the present embodiment provided is a kind of red, the area source packaged LED of green LED sub-pixel is as described below, comprise: a loading plate (041), be arranged at the blue-light LED chip (042) on loading plate, in blue-light LED chip surrounding, one taper barrier frame (043) is set, be arranged at the reflectance coating (044) of barrier frame inwall, be filled in the optical filling body (045) of (removing reflectance coating (044) region) in barrier frame (043), and one deck red light fluorescent powder layer (0461) and the green light fluorescent powder layer (0462) that are arranged at described optical filling external (045) surface, when LED works, blue-light LED chip (042) activates red light fluorescent powder layer (0461) or green light fluorescent powder layer (0462) and makes it send ruddiness or green glow.
And the area source packaged LED structure of a kind of blue-ray LED sub-pixel providing is in the present embodiment as described below, comprise: a loading plate (041), be arranged at the blue-light LED chip (0420) on loading plate, in blue-light LED chip (0420) surrounding, one taper barrier frame (043) is set, be arranged at the reflectance coating (044) of barrier frame inwall, be filled in the optical filling body (045) of (removing reflectance coating (044) region) in barrier frame (043), optical filling body (045) forms unrestrained transmitting optics structure (0463) towards spectators' outer surface through frosted or etching, preferably frostedization is processed in the present embodiment.When LED works, blue-ray LED (0420) spot light forms area source blue-ray LED through the matte surface of optical filling body (045).
At embodiment tri-and four, be to adopt UV-LED chip or blue-light LED chip to activate monochromatic phosphor powder layer to obtain three primary colours light, and actual should in also can adopt quantum dot optics film to replace phosphor powder layer, no longer repeat here.
So far the invention provides and introduce complete about a kind of area source packaged LED embodiment.
The present invention also provide a kind of adopt area source packaged LED described in above-described embodiment one to four without Moire fringe 3D-LED three-dimensional display system, the LED screen, a spectro-grating and the circuit drives assembly that comprise an employing area source packaged LED, described spectro-grating comprises slit grating, Lenticular screen, liquid crystal lens, liquid crystal light valve and vibrating grating; It is little that the LED of described area source packaged LED shields black matrix, for stereoscopic display, can effectively alleviate Moire fringe.
If Fig. 6 is a kind of 3D-LED display system without Moire fringe provided by the invention, comprise:
The LED screen (52) of a light-source encapsulation LED,
One slit grating (53),
And circuit drives assembly (51);
If Fig. 6 is a kind of 3D-LED display without Moire fringe provided by the invention, by triangle similarity relation, can obtain
Wherein, G
tfor grating transmission region length, G
zfor grating lightproof area length, G is raster pitch, W
pfor 2D pel spacing, L is viewing distance, and d is grating and 2D screen distance, and K is viewpoint number (treating the subgraph number that light splitting pattern comprises), and Q is people's eye pupil pitch of holes.
Simultaneous Equations, can obtain grating transmission region G
t, length, raster pitch G, grating and 2D screen distance d be:
In the present embodiment, the pixel cell on LED display sees through slit grating, and the LED pixel of left image incides observer's left eye, and the LED pixel of right image incides observer's right eye, is observing the display frame of brain compound stereoscopic.The parameter of concrete three-dimensional display system can calculate according to above-mentioned formula.
If Fig. 7 is a kind of 3D-LED display system without Moire fringe provided by the invention, comprise:
The LED screen (62) of a light-source encapsulation LED,
One Lenticular screen (63);
And circuit drives assembly (61).
As shown in Figure 7, be the present embodiment center pillar lens three-dimensional display system structure principle chart, by optical knowledge, can be obtained:
Post lens radius of curvature r is
Post lens pitch p is
Post lens thickness d is
Wherein, p is 2D pixel pitch, and L is viewing distance, and n is the post index of refraction in lens, and Q is adjacent viewpoint spacing, and K is 3D viewpoint number, and D is Lenticular screen and 2D display screen distance, W
pfor 2D pel spacing.
In the present embodiment, the pixel cell on LED display sees through post lens spectro-grating, and the LED pixel of left image incides observer's left eye, and the LED pixel of right image incides observer's right eye, is observing the display frame of brain compound stereoscopic.The parameter of concrete three-dimensional display system can calculate according to above-mentioned formula.
In the 5th and the 6th embodiment, there is LED display used do not have black matrix or only have very little black matrix, Moire fringe is also eliminated or has been reduced, and observer obtains better visual effect.
Above-listed preferred embodiment; the object, technical solutions and advantages of the present invention are further described; institute is understood that; the foregoing is only preferred embodiment of the present invention; not in order to limit the present invention; within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. an area source packaged LED, is characterized in that: comprises,
One loading plate, contains LED negative electrode and anode interface on described loading plate;
N LED chip, the negative electrode of described LED chip and anode connect respectively negative electrode and the anode interface on described loading plate;
One barrier frame, it is inner that described LED chip is positioned at described barrier frame;
Some reflectance coatings, described reflectance coating is arranged on described barrier frame inwall;
And be filled in the optical filling body in barrier frame, and described optical filling dignity also comprises the equal photosphere of one deck to spectators' outer surface, wherein N is natural number, and N=1 or N >=3.
2. a kind of area source packaged LED according to claim 1, is characterized in that: described equal photosphere is the optical texture of described optical filling external surface processingization; Wherein, the optical texture of described processing comprises: the form optical texture with unrestrained transmitting or scattering properties is processed in etching processing and frosted.
3. a kind of area source packaged LED according to claim 1, is characterized in that: described equal photosphere is the optical material being independent of outside described optical filling body, and described equal photosphere is arranged on described optical filling body; Described optical material comprises: polymer scattering layer, phosphor powder layer or quantum optices film.
4. a kind of area source packaged LED according to claim 1, is characterized in that: described optical filling body is comprised of one deck obturator at least.
5. a kind of area source packaged LED according to claim 1, is characterized in that: described N is 3, and described LED chip comprises three kinds of monochromatic LED chips of red, green, blue, for color LED screen display, shows.
6. a kind of area source packaged LED according to claim 1, is characterized in that: described N is 1, and described LED chip adopts UV-LED chip; Described equal photosphere is monochromatic phosphor powder layer, and the monochromatic fluorescent material of described monochromatic phosphor powder layer comprises: red light fluorescent powder, blue light fluorescent powder and green light fluorescent powder, be respectively used to UV light to be converted into the monochromatic light of red, green and blue, and UV-LED spot light is changed into area source.
7. a kind of area source packaged LED according to claim 1, is characterized in that: described N is 1, and described LED chip adopts blue-light LED chip; Described equal photosphere comprises monochromatic phosphor powder layer and the equal photosphere of optical texture; The monochromatic fluorescent material of described monochromatic phosphor powder layer comprises: red light fluorescent powder and green light fluorescent powder, be respectively used to blue light to be converted into red and green monochromatic light; The equal photosphere of described optical texture comprises: frosted processing or etching processing obturator outer surface.
8. according to a kind of area source packaged LED described in right 6 or 7, it is characterized in that: described monochromatic phosphor powder layer is replaceable is monochromatic quantum dot optics film.
9. a kind of area source packaged LED according to claim 1, is characterized in that: described area source packaged LED is applicable to whole screen LED screen; Described barrier frame is square body or non-square body; When described barrier frame is non-square body, between adjacent described barrier frame, be provided with for dispelling the heat, cooling heat dissipation channel.
10. adopt a 3D-LED display system for area source packaged LED as claimed in claim 1, it is characterized in that: the LED screen, a spectro-grating and the circuit drives assembly that comprise the described area source packaged LED of an employing.
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| CN104503013B (en) * | 2014-12-31 | 2017-05-31 | 华南师范大学 | A kind of LED fluorescent transparents makrolon grating and preparation method thereof |
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| WO2019019216A1 (en) * | 2017-07-24 | 2019-01-31 | 武汉华星光电技术有限公司 | Direct-lit backlight module and liquid crystal display |
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| CN108020958A (en) * | 2017-12-04 | 2018-05-11 | 福州大学 | A kind of encapsulating structure for direct-light-type backlight and preparation method thereof |
| CN108257949A (en) * | 2018-01-24 | 2018-07-06 | 福州大学 | Light efficiency extraction and color conversion micron order LED display and manufacturing method can be achieved |
| CN108257949B (en) * | 2018-01-24 | 2020-02-07 | 福州大学 | Micron-scale LED display device capable of realizing light effect extraction and color conversion and manufacturing method thereof |
| CN110349510A (en) * | 2018-04-08 | 2019-10-18 | 北京环宇蓝博科技有限公司 | A kind of curtain cover for LED display screen |
| WO2020063704A1 (en) * | 2018-09-28 | 2020-04-02 | 深圳光峰科技股份有限公司 | Led display screen |
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| CN111785183A (en) * | 2020-07-29 | 2020-10-16 | 杭州美卡乐光电有限公司 | LED display module and manufacturing method thereof, LED display screen and manufacturing method thereof |
| CN112162428A (en) * | 2020-08-28 | 2021-01-01 | 福州大学 | Mini-LED through hole dimming structure backlight source and manufacturing method thereof |
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