Indoor passive 3D LED display screen

Abstract

The utility model relates to an indoor passive 3D (three-dimensional) LED (light-emitting diode) display screen, which comprises an LED area array plate assembly, a mask, a composite polarizing film and 3D glasses for watching, the LED area array plate assembly is composed of a supporting structure and an area array driving plate, the area array driving plate is located on one side of the supporting structure, and LED light-emitting tubes distributed in an array mode are installed on the area array driving plate; the height of the face cover is flush with the height of the LED light-emitting tubes on the area array driving plate, and the composite polarizing film is installed on a plane formed by the face cover and the tops of the LED light-emitting tubes. According to the indoor passive 3D LED display screen, the polarization type 3D technology is adopted, the characteristic that light rays have polarization is utilized, staggered LED light-emitting tubes are used for playing two sets of different pictures respectively, polarized light in two different directions is generated through processing of a polaroid, the polarized light in the different directions is filtered out through the polaroid installed on the passive 3D glasses, and the indoor passive 3D LED display screen is obtained. The left eye and the right eye of a person receive two groups of different pictures which are synthesized into a three-dimensional image through the brain.

Description

Technical Field

[0001] The utility model belongs to the technical field of LED display screens, in particular to an indoor passive 3D LED display screen. Background Art

[0002] The application areas of LED displays are constantly expanding, and passive 3D LED displays are becoming a new trend in the industry;

[0003] At present, most 3D display LED screens use shutter 3D display technology, which needs to be used in conjunction with active shutter 3D glasses to achieve 3D effects (that is, the existing 3D LED technology uses time-division method to present 3D effects. The LED display screen increases the refresh rate of the picture and divides the image into two frames to form two groups of pictures corresponding to the left eye and the right eye, which are displayed continuously and staggered. The left and right lenses of the shutter 3D glasses are synchronously controlled by an infrared signal transmitter so that the left and right eyes can see the corresponding pictures at the right time). The opening and closing of the 3D glasses shutter is not completely synchronized with the left and right images, and crosstalk and ghosting will occur. The 3D glasses adapted to the active shutter 3D technology are always in a high-speed opening and closing state. Due to the different frame change times and individual differences of the pictures, long-term viewing can easily cause human eye fatigue. In addition, the active shutter 3D glasses are expensive, need to be charged, and have a complex structure and are difficult to maintain.

[0004] In view of this, an indoor passive 3D LED display screen is proposed. Utility Model Content

[0005] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0006] In view of the following technical problems in the prior art: most 3D display LED screens use shutter 3D display technology, which needs to be used in conjunction with active shutter 3D glasses to achieve 3D effects. The opening and closing of the 3D glasses shutter is not completely synchronized with the left and right images, resulting in crosstalk and ghosting. The 3D glasses adapted to the active shutter 3D technology are always in a high-speed opening and closing state. Due to the different frame change times and individual differences of the pictures, long-term viewing can easily cause eye fatigue. In addition, active shutter 3D glasses are expensive, need to be charged, have a complex structure and are difficult to maintain.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: an indoor passive 3D LED display screen, comprising an LED array panel assembly, a mask, a composite polarizing film and 3D glasses for viewing;

[0008] The LED array panel assembly is composed of a support structure and an array drive board, wherein the array drive board is located on one side of the support structure, and array-distributed LED light-emitting tubes are installed on the array drive board;

[0009] The height of the mask is flush with the LED light-emitting tube on the array drive board, and the composite polarizing film is installed on the plane formed by the mask and the top of the LED light-emitting tube;

[0010] The composite polarizing film is composed of two polarizing plates with different polarization directions, specifically a polarizing plate 1 with polarization direction 1 and a polarizing plate 2 with polarization direction 2.

[0011] As an optimal technical solution for an indoor passive 3D LED display screen, on the array drive board, the picture formed by the LED light-emitting tubes arranged in odd columns is defined as LED display image partition one, and the picture formed by the LED light-emitting tubes arranged in even columns is defined as LED display image partition two.

[0012] As an optimal technical solution for an indoor passive 3D LED display screen, the mask is installed in an embedded manner in the area array driving board.

[0013] As an optimal technical solution for an indoor passive 3D LED display screen, one of the LED display image partitions passes through polarizer one with polarization direction one, and the second LED display image partition only passes through polarizer two with polarization direction two, and the non-polarized light area of ​​the composite polarizing film is a black mask (the composite polarizing film does not need a light-transmitting area, which is an opaque area formed by superimposing two polarizers with different polarization directions).

[0014] As an optimal technical solution for an indoor passive 3D LED display screen, the left and right eye positions of the 3D glasses are respectively two polarizers with a single polarization (different polarization) direction.

[0015] Beneficial effects of the utility model:

[0016] This indoor passive 3D LED display screen adopts polarized 3D technology, which uses the polarization characteristics of light to play two sets of different images using staggered LED light tubes. After the polarizer is processed, two polarized lights with different directions are generated. The polarizer installed on the passive 3D glasses filters out polarized lights with different directions, so that the left and right eyes of the person receive two sets of different images, and finally the brain synthesizes the three-dimensional image.

[0017] Relying on the high-brightness LED display, polarized 3D LED display technology can make up for the disadvantage that polarizers reduce the brightness of the picture. Passive 3D glasses have a simple structure, low cost, and do not require charging, making them convenient for large-scale use.

[0018] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained through the structures particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0021] Figure 2 This is a detailed schematic diagram of the LED array panel assembly of the present invention.

[0022] Figure 3 It is a schematic diagram of the connection between the mask, the composite polarizing film and the array drive board of the utility model.

[0023] Figure 4 This is a schematic diagram of the distribution of LED light-emitting tubes of the utility model.

[0024] Figure 5 This is a schematic diagram of the composite polarizing film structure of the utility model.

[0025] Figure 6 This is a schematic diagram of the structure of 3D glasses of the present utility model.

[0026] Figure 7 It is a practical application schematic diagram of the utility model.

[0027] Figure 8 It is a schematic diagram of the principle of the utility model.

[0028] Fig. 9 It is a schematic diagram of the transverse cross-sectional structure of the utility model.

[0029] Fig.10 This is a schematic diagram of the odd-numbered column structure of the present invention.

[0030] Fig.11 This is a schematic diagram of the even-numbered column structure of the present invention.

[0031] Fig.12 This is a schematic structural diagram of the composite polarizing film of the utility model.

[0032] Reference numerals:

[0033] 1. LED array panel assembly; 2. Mask; 3. Composite polarization film; 4. Support structure; 5. Array drive board; 6. 3D glasses; 11. Shell; 10. LED display image partition one; 20. LED display image partition two; 40. Polarizer one; 50. Polarizer two; 60. Black mask. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0035] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0036] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0037] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0038] Reference Figure 1 , an indoor passive 3D LED display screen, including an LED array panel component 1, a mask 2 and a composite polarization film 3.

[0039] Reference Figure 2 and 8The LED array panel assembly 1 is composed of a support structure 4 and an array drive board 5, wherein the support structure 4 is responsible for the installation and fixation of the entire 3D LED display screen, and the array drive board 5 is equipped with array-distributed LED light-emitting tubes, the LED light-emitting tubes arranged in odd columns are LED display image partition one 10, and the LED light-emitting tubes arranged in even columns are LED display image partition two 20;

[0040] The grid of the mask 2 divides the polarizer into a number of display partitions, the number and position of which correspond one by one to the center of each LED light-emitting tube on the array drive board 5;

[0041] Reference Figure 3 The mask 2 is installed in the array drive board 5 in an embedded manner, the height of the mask 2 is flush with the LED light-emitting tube on the array drive board 5, and the composite polarizing film 3 is installed on the plane formed by the mask 2 and the top of the LED light-emitting tube;

[0042] Reference Figure 4 , the LED light-emitting tubes on the array driving board 5 are arranged in the forward direction: the lateral spacing between every two LED light-emitting tubes is N, and the column spacing between every two LED light-emitting tubes is 2N;

[0043] Reference Figure 5 The composite polarizing film 3 is composed of two polarizing plates with different polarization directions, specifically, a polarizing plate 1 40 with polarization direction 1 and a polarizing plate 2 50 with polarization direction 2. The image displayed by the LED display image partition 10 only passes through the polarizing plate 1 40 with polarization direction 1, and the image displayed by the LED display image partition 20 only passes through the polarizing plate 2 50 with polarization direction 2. At this time, the two images are superimposed and displayed, and the area of ​​the composite polarizing film 3 that does not pass light is a black mask 60 (black is seen by the naked eye after the two polarizing plates with different directions are superimposed);

[0044] The polarizers in two directions correspond to the LED display image partition 1 10 and the LED display image partition 2 20 which are staggered in odd and even columns on the illuminated area array driving board 5;

[0045] Reference Figure 6 , the left and right eye positions of the 3D glasses 6 are respectively two polarizers with a single polarization direction. Since the image is superimposed on the surface of the 3D LED display screen, the polarizers only allow light with the same polarization direction to enter. The polarizer 1 40 with a polarization direction of 1 located on the 3D glasses 6 filters out the image displayed by the LED display image partition 2 20 passing through the composite polarizing film 3, and only displays the image displayed by the LED display image partition 1 10; similarly, the polarizer 2 50 with a polarization direction of 2 located on the 3D glasses 6 filters out the image displayed by the LED display image partition 1 10 passing through the composite polarizing film 3, and only displays the image displayed by the LED display image partition 2 20. The two sets of images are synthesized by the human brain to form a 3D picture;

[0046] The mask 2 divides each LED light-emitting tube into grid-like partitions, and the thickness of the mask 2 is the same as the height of the light-emitting tube. The non-polarized light area of ​​the composite polarizing film 3 is a black mask 60, both of which are to prevent the image displayed by the LED display image partition 10 from leaking out from the polarizer 2 50 with the polarization direction of the composite polarizing film 3, and the image displayed by the LED display image partition 20 from leaking out from the polarizer 1 40 with the polarization direction of the composite polarizing film 3, thereby affecting the 3D display effect.

[0047] Example

[0048] Reference Figure 7 The supporting structure 4 is specifically a shell 11, which is used to fix the array drive board 5. The shell 11 and the array drive board 5 are tightly connected using evenly distributed screws to make each part evenly stressed, ensuring good flatness of the surface of the array drive board 5;

[0049] The front and back surfaces of the mask 2 are uniformly coated with a pressure-sensitive adhesive. One side of the mask 2 is fixed to the array drive plate 5 by the pressure-sensitive adhesive, and the other side is fixed to the composite polarizing film 3 by the pressure-sensitive adhesive.

[0050] Reference Fig.12 The composite polarizing film 3 is composed of a polarizing plate 40 with polarization direction 1 and a polarizing plate 50 with polarization direction 2; wherein the polarizing plate 40 with polarization direction 1 has a hole corresponding to the position of the LED display image partition 20; similarly, the polarizing plate 50 with polarization direction 2 has a hole at the position of the LED display image partition 10; after the two polarizing plates are superimposed, the one with holes is a single-layer polarizing plate, which allows light to pass through to form polarized light, and the polarizing plates without holes are superimposed, and light cannot pass through, so a black mask area is formed.

[0051] The polarizer directly in front of the left eye of the 3D glasses 6 is a left-handed circular polarizer, and the polarizer directly in front of the right eye is a right-handed circular polarizer. When the LED module is turned on, the image seen by the left eye is left-handed circular polarized light that can pass through the left-handed circular polarizer on the 3D glasses 6; the image seen by the right eye is right-handed circular polarized light that can pass through the right-handed circular polarizer on the 3D glasses 6; finally, the two beams of polarized light are combined into a 3D picture in the brain.

[0052] It should be understood that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but for those of ordinary skill having the benefit of this disclosure, the development effort will be a routine task of design, fabrication, and production without undue experimentation.

[0053] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An indoor passive 3D LED display screen, characterized in that: It comprises an LED array panel assembly (1), a mask (2), a composite polarizing film (3) and 3D glasses (6) for viewing; The LED array panel assembly (1) is composed of a support structure (4) and an array drive board (5), wherein the array drive board (5) is located on one side of the support structure (4), and array-distributed LED light-emitting tubes are mounted on the array drive board (5), wherein a screen formed by the LED light-emitting tubes arranged in odd columns is defined as LED display image partition one (10), and a screen formed by the LED light-emitting tubes arranged in even columns is defined as LED display image partition two (20); The height of the face mask (2) is flush with the LED light-emitting tube on the array drive board (5), and the composite polarizing film (3) is installed on the plane formed by the face mask (2) and the top of the LED light-emitting tube; The composite polarizing film (3) is composed of polarizing plates with two polarization directions, specifically polarizing plate 1 (40) with polarization direction 1 and polarizing plate 2 (50) with polarization direction 2; The LED display image partition one (10) only passes through polarizer one (40) with polarization direction one, the LED display image partition two (20) only passes through polarizer two (50) with polarization direction two, and the non-polarized light area of ​​the composite polarizing film (3) is a black mask (60).

2. The indoor passive 3D LED display screen according to claim 1, characterized in that: The mask (2) is installed in the area array drive plate (5) in an embedded manner.

3. The indoor passive 3D LED display screen according to claim 1, characterized in that: The left and right eye positions of the 3D glasses (6) are respectively two polarizing plates with a single polarization direction.

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