CN110568623A - Method for eliminating display white edge of 3D-LED module - Google Patents
Method for eliminating display white edge of 3D-LED module Download PDFInfo
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- CN110568623A CN110568623A CN201910877740.6A CN201910877740A CN110568623A CN 110568623 A CN110568623 A CN 110568623A CN 201910877740 A CN201910877740 A CN 201910877740A CN 110568623 A CN110568623 A CN 110568623A
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Abstract
The invention discloses a method for eliminating a white edge displayed by a 3D-LED module, belongs to the field of three-dimensional display, and aims to solve the problem of poor effect of eliminating the white edge of a large-size display screen. The method comprises the following steps: m extinction grating structures are implanted to the edge of the 3D polarizing film, so that m prism reflection structures are formed at the splicing positions of any two 3D polarizing films along the splicing lines, each prism reflection structure is formed by two extinction grating structures in a combined mode, and the m prism reflection structures on the splicing lines are used for reflecting light output by the LED display module through the splicing positions to the left side and the right side outside the visual field range, and further eliminating white edges.
Description
Technical Field
the invention belongs to the field of stereoscopic display, and particularly relates to a white edge eliminating technology of a combination unit of a 3D polarizing film and an LED display module.
Background
the polarized stereo display is a 3D display method which utilizes the principle that light has 'vibration direction' to realize the decomposition of original images and stereo imaging, and mainly adopts the mode that left-handed and right-handed polarized films are adjacently arranged on a display device in rows so as to convey two pictures with different polarization directions to a viewer, and when the pictures pass through polarized glasses, each lens of the polarized glasses can only receive the picture with one polarization direction, so that the left eye and the right eye of a person can only receive two groups of pictures, and the pictures are fused through the brain to form stereo vision, and the core component related to the polarized stereo display technology is a 3D-LED module formed by combining a 3D polarized film and an LED display module. Compared with shutter type stereoscopic display, the polarization type stereoscopic display has the advantages of stable picture, no flicker feeling, more comfortable eyes, light and portable wearing of glasses and no radiation, and is a focus of market attention.
the large-size display screen can be formed by splicing a plurality of LED display modules and is combined with a large-size 3D polarizing film, when the polarized three-dimensional display screen is used for displaying, the module splicing part has a white edge problem, and the white edge is formed by easily scattering light from the side surface mainly because the LED full-color device has a large light-emitting angle. The display image is output through the LED display modules, namely, white edges appear at corresponding positions of splicing positions of the LED display modules on the final image, and the display image is divided into a plurality of parts by the white edges on the sense organ, so that the complete image cannot be presented, and the visual effect of people is influenced. The existing main improvement method of the white edge comprises a software processing technology, as shown in fig. 1, white edge images of different segmentation units are picked up through an image pickup unit, correction environments and correction parameters are checked, and saturation is adjusted to carry out correction one by one, the process is complex and is greatly influenced by the installation angle, the visual angle, the size and the field environment of a display screen, the effect of weakening the white edge can only be achieved, and the white edge is corrected again when an LED display module is replaced in the later period, so that the after-sale cost is high; the other is to improve the splicing seams at the splicing positions of the modules in a physical mode, but the current method can only weaken the degree of the white edge in the front-view state, and the white edge influence still exists and is very obvious along with the increase of the viewing angle.
disclosure of Invention
The invention aims to solve the problem of poor effect of eliminating white edges of a large-size display screen, and provides a method for eliminating the white edges displayed by a 3D-LED module.
The invention relates to a method for eliminating a display white edge of a 3D-LED module, wherein the 3D-LED module comprises n 3D polarizing films, n LED display modules and a light transmitting layer; the spliced n 3D polarization films are positioned between the light transmitting layer and the spliced n LED display modules, and the n 3D polarization films correspond to the n LED display modules one to one;
The method for eliminating the white edge comprises the following steps: m extinction grating structures are implanted to the edge of the 3D polarizing film, so that m prism reflection structures are formed at the splicing positions of any two 3D polarizing films along the splicing lines, each prism reflection structure is formed by two extinction grating structures in a combined mode, and the m prism reflection structures on the splicing lines are used for reflecting light output by the LED display module through the splicing positions to the left side and the right side outside the visual field range, and further eliminating white edges.
preferably, the implanting of the m absorption grating structures at the edge of the 3D polarization film further comprises the steps of:
step one, arranging a 1/2 phase difference film 103 on one side of the circular polarization plate 100, which is far away from the LED display module;
Step two, forming m absorption grating structures 101 in the margin empty line of the 1/2 phase difference film 103,
The right-angle section of the absorption grating structure 101 is flush with the edge of the circular polarizing plate 100;
thirdly, splicing n circular polarizing plates 100 which are implanted with the light absorption grating structures and pasted with the 1/2 phase difference films together;
Step four, uniformly flattening the empty rows of the n 1/2 phase difference films 103;
And step five, forming an anti-reflection layer 300 to finish the manufacture of the 3D polarizing film.
preferably, the bottom surface of the absorption grating structure 101 is disposed on the circularly polarizing plate 100.
preferably, the height of the absorption grating structure 101 is equal to 1/2 of the retardation film 103, and the width of the absorption grating structure satisfies the formulaP is 1/2 of the width of each line of the retardation film 103; phi is the effective diameter of the lamp bead in the LED display module.
preferably, the absorption grating structure 101 is formed using a UV polymer mixed with light absorbing particles.
preferably, the absorption grating structure 101 is implanted in the edge margin of the 1/2 phase difference film 103 through a complementary mold.
Preferably, the absorption grating structure 101 is formed on the circularly polarizing plate 100, and then bonded to the 1/2 retardation film 103.
Preferably, the prism reflection structure is an isosceles triple prism column or an isosceles quadruple prism column.
the invention has the beneficial effects that: the invention solves the problems that the debugging is particularly complicated and the white edge improving effect is poor by picking up different contrast images in the traditional software control mode; the problem of white edge display caused by light leakage at the splicing position of the 3D-LED module is solved; the method for eliminating the white edge has the advantages of simple process preparation, synchronous operation with covering and sealing, controllable cost and simple method; the invention adopts the refraction and reflection principle of the prism column to further solve the problem of white edge, and has good effect; through the integrated setting extinction grating structure on polarization formula 3D membrane, the white limit effect of elimination that later maintenance also does not influence earlier stage and sets up, and is convenient simple, and the practicality is strong.
Drawings
FIG. 1 is a prior art software flow diagram for eliminating white edges;
FIG. 2 is a schematic view of a structure of a light-absorbing grating implanted at a position corresponding to a splicing position of a 3D polarizing film and an LED display module in the method of the present invention, in which only one LED display module and one unit of 3D polarizing film are shown, and the light-absorbing grating implanted at the splicing position is a structure with a triangular cross section;
FIG. 3 is a schematic diagram of a 3D-LED module manufactured by the method of the present invention, wherein two absorption grating structures at the splicing position are combined into an isosceles tri-prism column;
FIG. 4 is a schematic view of a structure of a light-absorbing grating implanted at a position corresponding to a splicing position of a 3D polarization film and an LED display module according to the method of the present invention, in which only one LED display module and one unit of 3D polarization film are shown, and the light-absorbing grating implanted at the splicing position is a structure with a right trapezoid cross section;
FIG. 5 is a schematic diagram of a 3D-LED module manufactured by the method of the present invention, in which two absorption grating structures at the joint are combined into an isosceles tetraprism column;
fig. 6 is a schematic diagram of the principle of eliminating the white edge by the method of the present invention.
Detailed Description
The following detailed description of the embodiments of the present invention will be provided with reference to the drawings and examples, so that how to apply the technical means to solve the technical problems and achieve the technical effects can be fully understood and implemented. It should be noted that, as long as there is no conflict, the embodiments and the features of the embodiments of the present invention may be combined with each other, and the technical solutions formed are within the scope of the present invention.
in a first embodiment, the present embodiment is described with reference to fig. 2 to 6, and the 3D-LED module of the present embodiment includes n 3D polarizing films, n LED display modules, and a light-transmitting layer; the spliced n 3D polarization films are positioned between the light transmitting layer and the spliced n LED display modules, and the n 3D polarization films correspond to the n LED display modules one to one;
The method for eliminating the white edge comprises the following steps: m extinction grating structures are implanted to the edge of the 3D polarizing film, so that m prism reflection structures are formed at the splicing positions of any two 3D polarizing films along the splicing lines, each prism reflection structure is formed by two extinction grating structures in a combined mode, and the m prism reflection structures on the splicing lines are used for reflecting light output by the LED display module through the splicing positions to the left side and the right side outside the visual field range, and further eliminating white edges.
the LED display module includes an LED full-color device 201 and a PCB board 200.
The method further comprises the following steps: the manufacturing process of the 3D polarization film implanted with the m absorption grating structures comprises the following steps:
Step one, arranging a 1/2 phase difference film 103 on one side of the circular polarization plate 100, which is far away from the LED display module;
Step two, forming m absorption grating structures 101 in the margin empty line of the 1/2 phase difference film 103,
the right-angle section of the absorption grating structure 101 is flush with the edge of the circular polarizing plate 100;
Thirdly, splicing n circular polarizing plates 100 which are implanted with the light absorption grating structures and pasted with the 1/2 phase difference films together;
Step four, uniformly flattening the empty rows of the n 1/2 phase difference films 103;
And step five, forming an anti-reflection layer 300 to finish the manufacture of the 3D polarizing film.
The method of the embodiment realizes the function of eliminating the white edge by implanting a plurality of absorption grating structures 101 in the 3D polarizing film. The n 3D polarizing films correspond to the n LED display modules one by one, and the light absorption grating structures 101 are arranged at the splicing positions and correspond to the lines where the lamp beads are located, so that white edges of the lines of the lamp beads at the splicing positions of the LED display modules are eliminated. The light absorption grating structure 101 at the edge of the 3D polarizing film is a symmetrical half-edge structure, and is buckled with the light absorption grating structure 101 of the adjacent 3D polarizing film to form a complete prism reflection structure which can be an isosceles prism, and the like. The right-angled plane of the absorption grating structure 101 is flush with the 3D polarizing film edge.
the light absorption grating layer is formed by mixing UV polymer and light absorption particles. In the method, a plurality of absorption grating structures 101 are formed by laminating a 1/2 phase difference compensation film 103 and a circularly polarizing plate 100 and then facing the 1/2 phase difference compensation film 103 through a complementary mold. The absorption grating structure 101 may be formed on the circularly polarizing plate 100 and then bonded to the 1/2 retardation compensation film 103. The cross section of the light absorption grating structure 101 is a right triangle or a right trapezoid, and other shapes can be right angles. The right-angle section is equal to the edge facing the LED display module. The absorption grating structure 101 is a right-angle triple prism or a right-angle quadruple prism column, and the spacing between adjacent right-angle sections of the absorption grating structure 101 is equal to the length of a single module. The height of the absorption grating structure 101 is equal to the 3D polarizing film, and is approximately 35 μm, and the width satisfies the formulaP is 1/2 phase difference compensationThe width of the film 103; phi is the effective diameter of the lamp bead. The adjacent right-angle triple prism column or right-angle quadruple prism column corresponds to the splicing position of the LED display module, and the bottom surface of the prism column is arranged on the light emitting surface of the LED full-color device. The scattered light of various angles emitted by the LED full-color device passes through the light-transmitting portion of the 3D polarizing film after passing through the circularly polarizing plate 100, a part of the scattered light passes through the UV light-transmitting layer of the prism reflection structure (formed during planarization) and is directly irradiated, and the other part of the scattered light passes through the 1/2 phase difference compensation film 103 and is subjected to phase difference modulation. When the light passes through the light absorption grating structure of the prism reflection structure, due to the shielding effect of the light absorption particles, one part of light is absorbed, a small amount of light is totally reflected in the triangular refraction area, and the light is refracted to the left side and the right side, so that the light jumps out of the visual field range of people, and the problem of further eliminating white edges is solved.
After forming the absorption grating structure 101 and the 1/2 retardation compensation film 103 on the circularly polarizing plate 100, planarization processing is performed, and the planarization layer and the 1/2 retardation compensation film 103 together constitute a light-transmitting grating portion. And finally, forming an anti-reflection layer 300 on the surfaces of the light absorption grating structure and the light transmission grating part. The light absorption grating structure 101 is formed by mixing UV polymer and light absorption particles, and the UV polymer can be formed on the circularly polarized light surface layer by UV light curing or thermal curing.
referring to fig. 6, taking splicing of adjacent modules as an example, the right-angled cross sections of the adjacent modules are attached to each other, the cross sections of the adjacent modules form an isosceles triangle or an isosceles trapezoid or other isosceles patterns, when the scattered light at various angles emitted by the LED full-color device 201 passes through the circular polarizing plate 100 and then passes through the light-transmitting grating layer, the scattered light is affected by the 1/2 phase difference compensation film 103 and the UV light-transmitting layer, respectively, one part of the scattered light is subjected to phase difference modulation, and the other part of the scattered light is not subjected to light modulation, so as to form two light beams with different polarization directions.
Although the embodiments of the present invention have been described above, the above descriptions are only for the convenience of understanding the present invention, and are not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
- The method for eliminating the display white edge of the 3D-LED module is characterized in that the 3D-LED module comprises n 3D polarizing films, n LED display modules and a light transmitting layer; the spliced n 3D polarization films are positioned between the light transmitting layer and the spliced n LED display modules, and the n 3D polarization films correspond to the n LED display modules one to one;The method for eliminating the white edge comprises the following steps: m extinction grating structures are implanted to the edge of the 3D polarizing film, so that m prism reflection structures are formed at the splicing positions of any two 3D polarizing films along the splicing lines, each prism reflection structure is formed by two extinction grating structures in a combined mode, and the m prism reflection structures on the splicing lines are used for reflecting light output by the LED display module through the splicing positions to the left side and the right side outside the visual field range, and further eliminating white edges.
- 2. the method for eliminating the display white edge of the 3D-LED module according to claim 1, wherein the m absorption grating structures are implanted at the edge of the 3D polarization film, further comprising the steps of:step one, arranging a 1/2 phase difference film (103) on one side of a circular polarization plate (100) which is far away from an LED display module;step two, forming m absorption grating structures (101) in the margin empty line of the 1/2 phase difference film (103),the right-angle section of the light absorption grating structure (101) is flush with the edge of the circular polarizing plate (100);Step three, splicing n circular polarizing plates (100) which are implanted with light absorption grating structures and pasted with 1/2 phase difference films together;Step four, uniformly flattening the empty rows of the n 1/2 phase difference films (103);and step five, forming an anti-reflection layer (300) to finish the manufacture of the 3D polarizing film.
- 3. the method for eliminating the display white edge of the 3D-LED module according to claim 2, wherein the bottom surface of the absorption grating structure (101) is disposed on the circularly polarizing plate (100).
- 4. The method for eliminating the display white edge of the 3D-LED module according to claim 1, wherein the height of the absorption grating structure (101) is equal to 1/2 of the retardation film (103), and the width of the absorption grating structure satisfies the formulaP is 1/2 of the width of each line of the retardation film (103); phi is the effective diameter of the lamp bead in the LED display module.
- 5. The method for eliminating the display white edge of the 3D-LED module according to claim 1, wherein the light-absorbing grating structure (101) is formed by mixing UV polymers with light-absorbing particles.
- 6. The method for eliminating the display white edge of the 3D-LED module according to claim 2, wherein the absorption grating structure (101) is implanted in the edge space of the 1/2 retardation film (103) through a complementary mold.
- 7. the method for eliminating the display white edge of the 3D-LED module according to claim 2, wherein the absorption grating structure (101) is formed on the circularly polarizing plate (100) and then bonded to the 1/2 retardation film (103).
- 8. The method of claim 1, wherein the prism reflection structure is an isosceles tri-prism or isosceles tetra-prism.
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| CN113359313A (en) * | 2021-05-21 | 2021-09-07 | 宁波维真显示科技股份有限公司 | Three-dimensional LED stereoscopic display device |
| CN114473709A (en) * | 2022-02-21 | 2022-05-13 | 宁波维真显示科技股份有限公司 | 3DLED trimming device and method |
| US11415797B2 (en) * | 2020-07-01 | 2022-08-16 | Interface Technology (Chengdu) Co., Ltd. | Eye tracking device and electronic device using same |
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