CN104049374A - LED screen capable of achieving surface light emitting and naked eye three-dimensional display device with LED screen capable of achieving surface light emitting - Google Patents
LED screen capable of achieving surface light emitting and naked eye three-dimensional display device with LED screen capable of achieving surface light emitting Download PDFInfo
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Abstract
The invention relates to an LED screen capable of achieving surface light emitting and a naked eye three-dimensional display device with the LED screen capable of achieving surface light emitting. The LED screen comprises LED pixel point arrays, black matrixes between LED pixel points, barrier frame arrays arranged above the black matrixes, and light evening plates arranged on the barrier frame arrays and used for diverging point light sources emitted by the LED pixel points into surface light sources. The LED pixel points correspond to barrier frames in a one to one mode to guarantee that crosstalk is not generated between adjacent LED pixel points. Reflecting film is arranged on the inner walls of the barrier frame arrays, and light irradiated to the inner walls of the barrier frames is easily transmitted. The LED screen and the naked eye three-dimensional display device have the advantages that adjacent light sources are separated through the barrier frame arrays, and the crosstalk is prevented; the point light sources emitted by the LED pixel points are diverged into the surface light sources through the light evening plates, the black matrixes in the LED screen are reduced or eliminated, light emitted by the pixel points is flexible, the moire fringe problem in a three-dimensional LED display system is solved, and the three-dimensional display performance is improved.
Description
Technical Field
The invention relates to the field of LED display screens, in particular to an LED screen capable of realizing surface luminescence and a naked eye three-dimensional display device thereof.
Background
Fig. 1 shows an LED display screen structure packaged in the prior art, which mainly includes LED pixels (001) and black matrixes (002) between adjacent pixels. The black matrix in the LED display screen can cause the aperture opening ratio of the display screen to be small, the light emitting surface is a point light source to emit light, and the problems of soft light emission, dazzling display images and the like are caused. Meanwhile, when the LED display screen is applied to a naked eye 3D-LED, moire fringes can be caused due to the periodic arrangement between the existing black matrix and the grating array which generates the three-dimensional light splitting, the three-dimensional effect of 3D display is influenced, and the watching effect of a viewer is caused.
The prior art proposes a method to solve the moire in LED black matrix or naked eye 3D-LED display. Patent CN 201310566242.2 proposes a solution to the problem of non-lighting black matrix between LED pixels. The LED display screen is characterized in that the surface of the LED display screen is covered with the lens array I and the lens array II, and the LED pixels are amplified under the combined action of the lens array I and the lens array II, so that non-luminous gaps between the pixels are eliminated. The method has strict and accurate design on the focal lengths of the lens array I and the lens array II, otherwise, the image is easily subjected to crosstalk between adjacent pixels after being amplified by the lens array I and the lens array II; meanwhile, the processing precision and the installation process of the lens array I and the lens array II are accurate, so that the LED display screen of the device is complex in manufacturing process and high in cost. One of the methods of CN200710048223.5 is to eliminate moire fringes by matching a scattering screen with a grating 3D autostereoscopic display, or by plating an antireflection film on the surface of a grating, but crosstalk occurs between adjacent pixels, that is, light of next pixels may run to the pixels due to the effect of the scattering screen or the antireflection film, thereby causing light mixing. The effect of 2D display is that the picture becomes blurred and the picture quality is degraded, and the stereoscopic effect is not observed for 3D-LEDs. Meanwhile, the problem of crosstalk between adjacent pixels and a solution are not proposed in the specification.
In summary, the existing LED screen has a black matrix, and because the LED pixels emit light in dots, the light emission is more glaring. Meanwhile, when the black matrix and the grating slit are applied to a 3D-LED stereoscopic display system, moire fringes can be generated by the black matrix and the grating slit to influence the viewing effect. Therefore, the invention mainly solves the problems of changing the light emission of the LED screen into uniform and soft light, solving the black matrix, solving the problems of moire fringes and the like in the 3D-LED, and improving and optimizing the crosstalk problem brought by the solutions provided by a plurality of other patents.
Disclosure of Invention
The invention aims to provide an LED screen capable of realizing surface light emission and a naked eye three-dimensional display device thereof, so as to solve the problems that the light emission of the LED screen is changed to be uniform and soft, a black matrix is solved, and moire fringes and the like in a 3D-LED are also solved.
In order to achieve the purpose, the technical scheme of the invention is as follows: an LED screen capable of realizing surface light emission comprises an LED pixel point array, a black matrix among the LED pixel points, a barrier frame array arranged above the black matrix and a light equalizing plate arranged on the barrier frame array and used for diverging point light sources emitted by the LED pixel points into a surface light source; the LED pixel points correspond to the barrier frame one by one so as to ensure that adjacent LED pixel points do not generate crosstalk; the inner wall of each barrier frame is provided with a reflecting film, which is beneficial to transmitting light irradiating the inner wall of the barrier frame.
In the embodiment of the invention, the barrier frame array and the light equalizing plate are integrated into a light equalizing array module, or the barrier frame array and the light equalizing plate are assembled into the light equalizing array module.
In the embodiment of the invention, the barrier frame array is a combined frame body with one or more specific geometric shapes; the specific geometric shapes include square, trapezoidal, circular arc, and conical.
In the embodiment of the invention, the light homogenizing plate is arranged on the barrier frame array; or the light homogenizing plate is embedded in the barrier frame array, and the emergent surface of the light homogenizing plate is parallel to the outer frame surface of the barrier frame array.
In the embodiment of the invention, the light homogenizing plate is a plane panel which emits point light sources emitted by LED pixel points into a surface light source; the light-equalizing plate is made of frosted PC plastic, frosted PMMA, frosted PET, frosted PVC, frosted PP, frosted PS, frosted epoxy resin, frosted glass or a mixture of liquid crystal polymer and photosensitive resin.
In the embodiment of the invention, an opaque layer array for improving the contrast of the LED display screen is arranged between the barrier frame array and the light equalizing plate.
In the embodiment of the invention, the light-tight layer array is arranged on the upper surface of the barrier frame array; or the light-tight layer array is arranged on the surface of the light homogenizing plate and is in one-to-one corresponding contact with the upper surface of the barrier frame array; or the non-light-transmission layer array is arranged in the light equalizing plate, the lower surface of the non-light-transmission layer array is in one-to-one corresponding contact with the upper surface of the barrier frame array, and the upper surface of the non-light-transmission layer array and the upper surface of the light equalizing plate are on the same horizontal line.
In the embodiment of the invention, a light guide layer is also arranged between the barrier frame array and the light homogenizing plate.
In the embodiment of the invention, a heat dissipation channel for heat dissipation and cooling is arranged between adjacent barrier frame frames of the barrier frame array.
The invention also provides naked eye three-dimensional display comprising the surface light-emitting LED screen, which is characterized in that: the LED display screen comprises the surface-emitting LED screen, a light splitting grating and a circuit driving assembly.
Compared with the prior art, the invention has the following beneficial effects:
(1) the invention uses the barrier frame array to isolate the adjacent light sources, thereby preventing the light crosstalk; at the same time in the barrier frame
The reflecting film is arranged on the inner wall of the array, so that light irradiating the inner wall of the barrier frame is favorably conducted, and the loss of the light is reduced;
(2) the invention also utilizes the light equalizing plate arranged on the surface of the barrier frame array to disperse the LED point light source into a surface light source, thereby reducing the size of the LED point light source
Or eliminating a black matrix in the LED screen to make the pixel points softer; and due to the elimination or reduction of the LED screen black matrix, the moire fringe problem in a 3D-LED display system is solved, and the three-dimensional display performance is improved.
Drawings
Fig. 1 is a schematic structural diagram of a conventional LED screen.
Fig. 2 is an overall schematic view of an LED panel capable of realizing surface light emission according to a first embodiment of the present invention.
Fig. 3 is a partial structural view of an LED panel capable of realizing surface light emission according to a first embodiment of the present invention.
Fig. 4 is a schematic view of a frosted smoothing layer in the first embodiment of the present invention.
Fig. 5 is a light path diagram of an LED screen capable of realizing surface light emission according to a first embodiment of the present invention.
Fig. 6 is a schematic structural diagram of an LED panel capable of realizing surface light emission according to a second embodiment of the present invention.
Fig. 7 is a schematic structural diagram of an LED panel capable of realizing surface light emission according to a third embodiment of the present invention.
Fig. 8 is a schematic structural diagram of an LED panel capable of realizing surface light emission according to a fourth embodiment of the present invention.
Fig. 9 is a light-equalizing layer structure according to a fifth embodiment of the present invention.
Fig. 10 is a schematic structural diagram of an LED panel capable of realizing surface light emission according to a sixth embodiment of the present invention.
FIG. 11 is a structural diagram of a slit grating-based 3D-LED display system without moire fringes.
FIG. 12 is a structural diagram of a moire-free 3D-LED display system based on lenticular lens grating provided by the present invention.
In the figure, 001, 011, 021, 031, 041 and 061 are LED pixel points,
002. 012, 022, 032, 042, 062 are black matrices,
013. 023, 033, 043, 063 are barrier frame frames,
014. 024, 034, 044, 054 and 064 are light homogenizing plates,
015. 025, 035, 045, 065 are reflecting films,
0341 is a light homogenizing layer, 0342 is a light-tight layer, 0442 is photosensitive resin, 0443 is liquid crystal polymer, 0541 is a mesh point of a light guide plate, 066 is a heat dissipation channel,
071. 081 is circuit driving component, 072, 082 are LED display screens, 073 is slit grating, 083 is post lens grating.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to specific embodiments and accompanying drawings. In the figures, the thicknesses of layers and regions are exaggerated for clarity, but as a schematic illustration should not be considered to reflect strictly the geometric scaling. Where the reference figures are schematic illustrations of idealized embodiments of the present invention, the illustrated embodiments of the present invention should not be construed as limited to the particular shapes of regions illustrated in the figures, but are to include resultant shapes such as deviations that result from manufacturing. In the present embodiments, all are represented by rectangles, and the representation in the figures is schematic, but this should not be construed as limiting the scope of the invention.
The technical scheme of the invention is specifically explained below with reference to the accompanying drawings.
The invention provides an LED screen capable of realizing surface light emission, which comprises an LED pixel point array, a black matrix between LED pixel points, a barrier frame array arranged above the black matrix and a light-equalizing plate arranged on the barrier frame array and used for diffusing point light sources emitted by the LED pixel points into a surface light source; the LED pixel points correspond to the barrier frame one by one so as to ensure that adjacent LED pixel points do not generate crosstalk; and the inner wall of each barrier frame is provided with a reflecting film so as to be beneficial to transmitting light irradiating the inner wall of the barrier frame.
First embodiment
Fig. 2 shows an LED panel capable of realizing surface light emission according to a first embodiment of the present invention, where the LED panel includes an LED pixel dot array (the LED pixel dot array is composed of LED pixels (011)), a black matrix (012) between the LED pixels (011), a barrier frame (013) disposed on the black matrix (012) (the barrier frame (013) constitutes the barrier frame array), and a light equalizing plate (014) disposed on the barrier frame (013). As shown in fig. 2, in order to prevent crosstalk between adjacent LED pixels (011), one LED pixel (011) corresponds to one barrier frame (013).
As shown in fig. 3, in the specific implementation process, it is preferable that the width between the black matrixes among the LED pixel points is 1 mm, and the LED pixel points are 2 mm; the material of the barrier frame (013) is preferably acrylic sheet. A reflective film 015 is provided on an inner wall of each barrier frame 013 in order to conduct light irradiated on the barrier to the outside as well, thereby reducing light loss.
The barrier frame array and the light homogenizing plate can be an integrated light homogenizing array module, and the barrier frame array and the light homogenizing plate can also be assembled into a light homogenizing array module; the barrier frame is a combined frame body with one or more specific geometric shapes; the specific geometric shapes include square, trapezoidal, circular arc, and conical. The light homogenizing plate can be arranged on the barrier frame; the light-equalizing plate can be embedded in the barrier frame, and the emergent surface of the light-equalizing plate is parallel to the outer frame surface of the barrier frame array; the light equalizing plate arranged outside the barrier frame array comprises frosted PC plastic, frosted PMMA, frosted PET, frosted PVC, frosted PP, frosted PS, frosted epoxy resin, frosted glass or a mixture of liquid crystal polymer and photosensitive resin.
In the implementation process, the barrier frame (013) with a rectangular shape with a thickness of 0.25 mm and the light homogenizing plate (014) made of frosted PC plastic are preferably connected by UV glue to self-assemble a light homogenizing array module, as shown in fig. 4.
The light emitting principle of the LED panel capable of realizing surface light emission provided by the first preferred embodiment of the present invention is further described as follows. As shown in fig. 5, light emitted from the LED pixel points (011) and light reflected by the reflective film (015) on the barrier frame (013) are emitted to the frosted PC plastic light equalizing plate (014) and diffused, and the LED point light sources become surface light sources. On the one hand, the width of the barrier frame (013) is smaller than that of the original black matrix (012), and the size of the black matrix is reduced. On the other hand, the diffuse emission of the frosted PC plastic homogenizing plate (014) is diffused to a certain extent, so that the black matrix brought by the barrier frame is eliminated. The method provided by the first preferred embodiment of the invention has the obvious advantages that compared with the prior LED point light source, the point light source is changed into the surface light source to emit light, the light emitting area is increased, and the light source is softer; meanwhile, the problem of LED screen black matrix is eliminated, and the problem of moire fringes of a 3D-LED stereoscopic display system is also eliminated.
Second embodiment
Fig. 6 shows an LED panel capable of realizing area lighting according to a second embodiment of the present invention, where the LED panel includes an array of LED pixels, a black matrix (022) between the LED pixels (021), a barrier frame (023) disposed on the black matrix (022) (the barrier frame (023) constitutes a barrier frame array), and a light homogenizing plate (024) disposed on the barrier frame array. As shown in fig. 6, in order to prevent crosstalk between adjacent LED pixels, one LED pixel (021) corresponds to one barrier frame (023).
In the specific implementation process, the width between the black moments of the LED pixel points is preferably 1 mm, and the pixel points are preferably 2 mm; the material of the barrier frame is preferably made of opaque PVC plastic. The inner wall of each barrier frame (024) is provided with a reflective film (025) for conducting light irradiated on the barrier to the outside as well, thereby reducing light loss.
The barrier frame array and the light homogenizing plate can be an integrated light homogenizing array module, and the barrier frame array and the light homogenizing plate can also be assembled into a light homogenizing array module; the barrier frame is a combined frame body with one or more specific geometric shapes; the specific geometric shapes include square, trapezoidal, circular arc, and conical. The light homogenizing plate can be arranged on the barrier frame; the light-equalizing plate can be embedded in the barrier frame, and the emergent surface of the light-equalizing plate is parallel to the outer frame surface of the barrier frame array; the light equalizing plate arranged outside the barrier frame array comprises frosted PC plastic, frosted PMMA, frosted PET, frosted PVC, frosted PP, frosted PS, frosted epoxy resin, frosted glass or a mixture of liquid crystal polymer and photosensitive resin. An opaque layer array used for improving the contrast of the LED display screen can be arranged between the barrier frame array and the light homogenizing plate; the light-tight layer array is arranged on the upper surface of the barrier frame array; or the barrier rib frame array is arranged on the surface of the light homogenizing plate and is in one-to-one corresponding contact with the upper surface of the barrier rib frame array; or the light-proof layer array is arranged in the light-equalizing plate, the lower surface of the light-proof layer array is in one-to-one corresponding contact with the upper surface of the barrier frame array, and the upper surface of the light-proof layer array and the upper surface of the light-equalizing plate are on the same horizontal line.
In the implementation process, it is preferable that the light-equalizing plate (024) is embedded in a rectangular barrier frame (023) with a thickness of 0.25 mm, so that the LED pixels (021) correspond to the light-equalizing plates (024) of the light-equalizing plate array one by one, and the upper surface of the light-equalizing plate (024) and the opaque layer of the opaque array on the surface of the barrier frame are on the same horizontal line, and a light-equalizing array module is self-assembled, as shown in fig. 6.
Third embodiment
Fig. 7 shows a surface-emitting LED panel according to a third embodiment of the present invention, where the LED panel includes LED pixels, black matrices (032) between the LED pixels (031), barrier frame frames (033) disposed on the black matrices (032) (the barrier frame frames (033) form a barrier frame array), and a light equalizing plate (034) disposed on the barrier frame array. As shown in fig. 7, in order to prevent crosstalk between adjacent LED pixels, one LED pixel (031) corresponds to one barrier frame (033).
In the specific implementation process, the width between the black moments of the LED pixels is preferably 1 mm, and the pixel width is preferably 2 mm; the material of the barrier frame is preferably made of transparent PVC plastic. The inner wall of each barrier frame (034) is provided with a reflective film (035) for conducting light impinging on the barrier to the outside as well, reducing light loss.
The barrier frame array and the light homogenizing plate can be an integrated light homogenizing array module, and the barrier frame array and the light homogenizing plate can also be assembled into a light homogenizing array module; the barrier frame is a combined frame body with one or more specific geometric shapes; the specific geometric shapes include square, trapezoidal, circular arc, and conical. The light homogenizing plate can be arranged on the barrier frame; the light-equalizing plate can be embedded in the barrier frame, and the emergent surface of the light-equalizing plate is parallel to the outer frame surface of the barrier frame array; the light equalizing plate arranged outside the barrier frame array comprises frosted PC plastic, frosted PMMA, frosted PET, frosted PVC, frosted PP, frosted PS, frosted epoxy resin, frosted glass or a mixture of liquid crystal polymer and photosensitive resin. An opaque layer array used for improving the contrast of the LED display screen can be arranged between the barrier frame array and the light homogenizing plate; the light-tight layer array is arranged on the upper surface of the barrier frame array; or the barrier rib frame array is arranged on the surface of the light homogenizing plate and is in one-to-one corresponding contact with the upper surface of the barrier rib frame array; or the light-proof layer array is arranged in the light-equalizing plate, the lower surface of the light-proof layer array is in one-to-one corresponding contact with the upper surface of the barrier frame array, and the upper surface of the light-proof layer array and the upper surface of the light-equalizing plate are on the same horizontal line.
As shown in fig. 7, in the implementation process, the barrier frame array with a thickness of 0.25 mm and the light-equalizing plate (034) are preferably integrally formed to form a light-equalizing array module according to the third embodiment of the present invention. And the light-tight array (consisting of light-tight layers (0342)) is preferably arranged in the light-equalizing plate (034), the lower surface of the light-tight array is in one-to-one corresponding contact with the upper surface of the barrier frame array, and the upper surface of the light-tight layer (0342) of the light-tight array and the upper surface of the light-equalizing layer (0341) are on the same horizontal line.
Fourth embodiment
Fig. 8 shows an LED panel capable of realizing surface lighting according to a fourth embodiment of the present invention, where the LED panel includes an LED pixel dot array, a black matrix (042) between LED pixel dots (041), a barrier frame array (composed of barrier frame frames (043)) disposed on the black matrix (042), and a light equalizing plate (044) disposed on the barrier frame array. In order to prevent the adjacent LED pixel points from crosstalk, one LED pixel point (041) corresponds to one barrier frame (043).
In the specific implementation process, the width between the black moments of the LED pixel points is preferably 1 mm, and the pixel points are preferably 2 mm; the material of the barrier frame is preferably made of transparent PVC plastic. The inner wall of each barrier frame (043) is provided with a reflective film (045) for the purpose of transmitting light irradiated on the barrier to the outside as well, reducing light loss.
The barrier frame array and the light homogenizing plate can be an integrated light homogenizing array module, and the barrier frame array and the light homogenizing plate can also be assembled into a light homogenizing array module; the barrier frame is a combined frame body with one or more specific geometric shapes; the specific geometric shapes include square, trapezoidal, circular arc, and conical. The light homogenizing plate can be arranged on the barrier frame; the light-equalizing plate can be embedded in the barrier frame, and the emergent surface of the light-equalizing plate is parallel to the outer frame surface of the barrier frame array; the light equalizing plate arranged outside the barrier frame array comprises frosted PC plastic, frosted PMMA, frosted PET, frosted PVC, frosted PP, frosted PS, frosted epoxy resin, frosted glass or a mixture of liquid crystal polymer and photosensitive resin. An opaque layer array used for improving the contrast of the LED display screen can be arranged between the barrier frame array and the light homogenizing plate; the light-tight layer array is arranged on the upper surface of the barrier frame array; or the barrier rib frame array is arranged on the surface of the light homogenizing plate and is in one-to-one corresponding contact with the upper surface of the barrier rib frame array; or the light-proof layer array is arranged in the light-equalizing plate, the lower surface of the light-proof layer array is in one-to-one corresponding contact with the upper surface of the barrier frame array, and the upper surface of the light-proof layer array and the upper surface of the light-equalizing plate are on the same horizontal line.
In the specific implementation process, the barrier frame array with a thickness of 0.25 mm and the light homogenizing plate (044) are preferably cured by using UV glue to assemble the light homogenizing array module in the fourth embodiment of the invention. And the light homogenizing plate is formed by mixing a liquid crystal polymer (0443) and a photosensitive resin (0442) and irradiating ultraviolet rays (044), as shown in fig. 8. In the case where the other structure is the same as that of the first embodiment, the light uniformizing plate is replaced. Since the liquid crystal polymer has a scattering optical property, the LED dot pixels are enlarged, and the black matrix on the back surface is shielded, thereby solving the black matrix problem.
Fifth embodiment
The present invention provides a fifth embodiment, which is based on any one of the above embodiments and provides an LED panel capable of realizing surface light emission. A light guide plate (054) is disposed between the barrier frame array and the light-equalizing plate while keeping the other parameter structure unchanged, as shown in fig. 9. The size of the light guide plate mesh (0541) is 200 microns in the embodiment, and each barrier frame contains 100 light guide plate mesh in the LED screen with the P3 specification.
Sixth embodiment
The present invention provides a sixth embodiment, which is based on any one of the above embodiments and provides an LED panel capable of realizing surface light emission. The structure of the LED screen is shown in fig. 10, the LED screen comprises an LED pixel point array, a black matrix (062) between LED pixel points (061), a barrier frame array (consisting of barrier frame frames (063)) arranged on the black matrix (062), and a light homogenizing plate (064) arranged on the barrier frame array. In order to prevent adjacent LED pixels from crosstalk, one LED pixel (061) corresponds to one barrier frame (063).
Different from the above embodiments, in the present embodiment, the barrier frame (063) includes an upper part and a lower part, wherein the lower part near the light equalizing plate (064) is a square frame, and the upper part near the PCB is a trapezoid frame. Heat dissipation channels (066) are included between adjacent barrier frame frames (063) for heat dissipation and cooling. The inner wall of the barrier frame (063) is adhered with a corresponding reflecting film (065), and also comprises an upper part and a lower part.
According to the present embodiment, the structure of the barrier frame (063) can still be modified to include a square, a trapezoid, a circular arc, a circular cone, or other structures and combinations thereof. The LED screen capable of realizing surface light emitting is formed by arranging the LED pixel point arrays.
The present invention has been described with respect to embodiments of an LED panel that can achieve surface illumination.
With the LED panels capable of realizing surface light emission provided in embodiments 1 to 6, the present invention also provides a moire-free 3D-LED stereoscopic display based on any one of the LED panels capable of realizing surface light emission, including:
the LED screen can realize surface luminescence;
a spectroscopic grating;
and other circuit drivers.
Fig. 11 is a 3D-LED display without moire according to a first aspect of the present invention, comprising:
an LED display screen (072) capable of realizing surface luminescence,
a slit grating (073) is provided,
and a circuit drive assembly (071);
FIG. 11 shows a 3D-LED display without moire fringes obtained from the similarity relationship of triangles
Wherein,the length of the light-transmitting area of the grating,is the length of the light-shielding area of the grating,for the length of the pitch of the grating,the distance between the two pixels is 2D, L is the viewing distance, D is the distance between the grating and the 2D screen, K is the number of view points (the number of sub-images included in the pattern to be dispersed), and Q is the distance between the pupils of the human eyes.
Simultaneous equations to obtain the light transmission region of the gratingThe length, grating pitch G, and grating-to-2D screen distance D are:
in this embodiment, the pixel units on the LED display screen transmit through the slit grating, the LED pixels of the left image are incident to the left eye of the observer, the LED pixels of the right image are incident to the right eye of the observer, and the brain is observed to synthesize the stereoscopic display image. The parameters of the specific stereoscopic display system can be calculated according to the formula.
Fig. 12 shows another 3D-LED display without moire fringes according to the present invention, which comprises:
an LED display screen (082) capable of realizing surface lighting,
a cylindrical lenticulation (083);
and a circuit driving component (081).
As shown in fig. 12, a schematic diagram of a lenticular stereoscopic display system according to the present embodiment is shown, which can be obtained from optical knowledge:
the radius of curvature r of the cylindrical lens is
The pitch p of the cylindrical lens is
The thickness d of the cylindrical lens is
Wherein,the distance between the two adjacent viewpoints is 2D pixel pitch, L is viewing distance, n is refractive index of the cylindrical lens, Q is adjacent viewpoint distance, K is the number of 3D viewpoints, and D is the distance between the cylindrical lens grating and the 2D display screen.
In this embodiment, the pixel units on the LED display screen transmit through the cylindrical lens light splitting grating, the LED pixels of the left image are incident to the left eye of the observer, the LED pixels of the right image are incident to the right eye of the observer, and the brain is observed to synthesize the stereoscopic display image. The parameters of the specific stereoscopic display system can be calculated according to the formula.
The LED display screen used in the 3D-LED display has no black matrix or only a small black matrix, and the moire fringes are eliminated or reduced, so that an observer obtains better visual effect.
The above-mentioned preferred embodiments, further illustrating the objects, technical solutions and advantages of the present invention, should be understood that the above-mentioned are only preferred embodiments of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a can realize luminous LED screen of face which characterized in that: the LED screen comprises an LED pixel point array, a black matrix among the LED pixel points, a barrier frame array arranged above the black matrix and a light equalizing plate arranged on the barrier frame array and used for diverging point light sources emitted by the LED pixel points into a surface light source; the LED pixel points correspond to the barrier frame one by one so as to ensure that adjacent LED pixel points do not generate crosstalk; the inner wall of each barrier frame is provided with a reflecting film, which is beneficial to transmitting light irradiating the inner wall of the barrier frame.
2. The LED screen capable of realizing surface lighting according to claim 1, wherein: the barrier frame array and the light homogenizing plate are integrated into a light homogenizing array module, or the barrier frame array and the light homogenizing plate are assembled into a light homogenizing array module.
3. The LED screen capable of realizing surface lighting according to claim 1, wherein: the barrier frame array is one or more combined frame bodies with specific geometric shapes; the specific geometric shapes include square, trapezoidal, circular arc, and conical.
4. The LED screen capable of realizing surface lighting according to claim 1, wherein: the light homogenizing plate is arranged on the barrier frame array; or the light homogenizing plate is embedded in the barrier frame array, and the emergent surface of the light homogenizing plate is parallel to the outer frame surface of the barrier frame array.
5. The LED screen capable of realizing surface lighting according to claim 1, wherein: the light homogenizing plate is a plane panel which emits point light sources emitted by the LED pixel points into a surface light source; the light-equalizing plate is made of frosted PC plastic, frosted PMMA, frosted PET, frosted PVC, frosted PP, frosted PS, frosted epoxy resin, frosted glass or a mixture of liquid crystal polymer and photosensitive resin.
6. The LED screen capable of realizing surface lighting according to claim 1, wherein: and a light-tight layer array for improving the contrast of the LED display screen is arranged between the barrier frame array and the light-equalizing plate.
7. The LED screen capable of realizing surface lighting according to claim 6, wherein: the light-tight layer array is arranged on the upper surface of the barrier frame array; or the light-tight layer array is arranged on the surface of the light homogenizing plate and is in one-to-one corresponding contact with the upper surface of the barrier frame array; or the non-light-transmission layer array is arranged in the light equalizing plate, the lower surface of the non-light-transmission layer array is in one-to-one corresponding contact with the upper surface of the barrier frame array, and the upper surface of the non-light-transmission layer array and the upper surface of the light equalizing plate are on the same horizontal line.
8. The LED screen capable of realizing surface lighting according to claim 1, wherein: and a light guide layer is also arranged between the barrier frame array and the light homogenizing plate.
9. The LED screen capable of realizing surface lighting according to claim 1, wherein: and a heat dissipation channel for heat dissipation and cooling is arranged between adjacent barrier frame frames of the barrier frame array.
10. Autostereoscopic display device comprising a LED screen according to any of claims 1 to 9, characterized in that: the LED display screen comprises the surface-emitting LED screen, a light splitting grating and a circuit driving assembly.
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| CN201410322085.5A CN104049374A (en) | 2014-07-05 | 2014-07-05 | LED screen capable of achieving surface light emitting and naked eye three-dimensional display device with LED screen capable of achieving surface light emitting |
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