3D LED display device for realizing resolution lossless display

Abstract

The application relates to a 3D LED display device achieving resolution lossless display, which comprises a device body, the device body comprises an LED chip unit, an LED driving PCB board and an LED display module, the LED display module comprises a plurality of RGB light emitting pixel units, the device body further comprises a light processing layer located on the LED display module, the light processing layer is used for presenting each RGB light emitting pixel unit as two columns of virtual RGB pixels, the device body further comprises a polarization structure layer located on the light processing layer and a haze layer located on the polarization structure layer, the polarization structure layer comprises a circular polarization layer located on the light processing layer and a plurality of 1 / 2 phase difference layers distributed on the circular polarization layer, each 1 / 2 phase difference layer is located above one virtual RGB pixel of each RGB light emitting pixel unit, the structure can make the resolution received by two eyes have no loss relative to the original resolution, the definition is improved, and the 3D LED display device has low manufacturing cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of 3D LED display technology, in particular to a 3D LED display device for realizing lossless display of resolution. BACKGROUND

[0002] The principle of viewing 3D movies is that the left eye and the right eye of a person respectively receive left-eye images and right-eye images played in frame sequence, and the left-eye images and the right-eye images are synthesized by the brain to produce 3D effect. During viewing, the left eye and the right eye need to receive images through 3D glasses so that the left-eye images can only be received by the left eye and the right-eye images can only be received by the right eye.

[0003] Polarization projection type 3D display is provided with left and right circular polarizing plates in front of two projectors, and images are fused and modulated to form a polarization 3D display system. The audience wears polarizing glasses, and the left and right eye positions of the glasses are respectively provided with left and right circular polarizing plates corresponding to the left and right circular polarizing plates provided in front of the two projectors, so that the left and right eyes of the viewer can only see the images projected by the corresponding one of the two projectors, thereby generating parallax effect and producing 3D stereoscopic display effect.

[0004] With the development of LED display technology, LED display screens are increasingly used in indoor high-definition display field.

[0005] LED display screens have technical advantages of adjustable high brightness, no splicing obstacles, wide coverage range of point distance, etc., and have been one of the mainstreams of market development. However, LED pixels have the disadvantage of strong graininess and low definition compared with LCD pixels. In this case, during the use of polarization type 3D LED, the row array type or column array type of 3D output causes loss of 3D display resolution in the row direction and the column direction respectively, and the definition is further reduced, which restricts people's pursuit of higher definition stereoscopic display technology. For example, an LED display screen with a resolution of 1920*1080 needs to be displayed in 3D, and the 3D display picture is composed of two images, each occupying half. When the 3D glasses are worn to watch the display picture, the left eye sees the left half image and the right eye sees the right half image, and the actual received resolution of the audience is 960*1080, which is equivalent to losing half of the resolution and reducing the definition.

[0006] Therefore, there is an urgent need for a large-screen 3D display technical solution to realize lossless display of 3D display resolution, while avoiding the self-deficiency of strong graininess and low definition of LED and the current high cost problem. SUMMARY

[0007] The technical problem solved by the present application is to provide a 3D LED display device which can realize lossless display of 3D display resolution, avoid the strong LED grain feeling and low definition, and reduce the cost.

[0008] The technical scheme adopted by the present application is a 3D LED display device which can realize lossless display of resolution, comprising a device body, the device body comprising an LED chip unit, an LED driving PCB plate located on the LED chip unit, and an LED display module located on the LED driving PCB plate, the LED display module comprising a plurality of RGB light emitting pixel units, the RGB sub-pixels of each RGB light emitting pixel unit being arranged in a column direction, the device body further comprising a light processing layer located on the LED display module, the light processing layer being used to present each RGB light emitting pixel unit as two columns of virtual RGB pixels, the RGB sub-pixels of each column of virtual RGB pixels being arranged in a column direction, the device body further comprising a polarization structure layer located on the light processing layer and a haze layer located on the polarization structure layer, the polarization structure layer comprising a circular polarization layer located on the light processing layer and a plurality of 1 / 2 phase difference layers distributed on the circular polarization layer, each 1 / 2 phase difference layer being located above one virtual RGB pixel of each RGB light emitting pixel unit, the 1 / 2 phase difference layer being used to rotate the polarized light rays emitted from the one virtual RGB pixel by 180 degrees, and the polarization structure layer further comprising a UV layer filled in the gaps between the 1 / 2 phase difference layers.

[0009] The 3D LED display device which can realize lossless display of resolution has the following advantages: the light processing layer presents each RGB light emitting pixel unit as two columns of virtual RGB pixels, and the 1 / 2 phase difference layer rotates the polarized light rays of one virtual RGB pixel in the two columns of virtual RGB pixels by 180 degrees, so that the resolution received by the two eyes has no loss relative to the original resolution, i.e., the resolution received by the two eyes is not halved, the definition is improved, the grain feeling is reduced, the effect of lossless display of resolution of the 3D LED display device is achieved, and the 3D LED display device has low cost.

[0010] Preferably, the total pixel width of each two columns of virtual RGB pixels is equal to the center distance between two adjacent RGB light emitting pixel units, and this structure can avoid pixel overlap of virtual pixels and improve the 3D display definition.

[0011] Preferably, the light processing layer adopts a triangular prism or a cylindrical lens, and this structure can present each RGB light emitting pixel unit as two columns of virtual RGB pixels, which is simple and convenient.

[0012] Preferably, the haze of the haze layer is 30% to 60%. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 A cross-sectional schematic view of a 3D LED display device according to the present application;

[0014] Figure 2 A schematic view of a pixel structure after a light processing layer according to the present application;

[0015] As shown in the figure: 1, LED chip unit; 2, LED drive PCB board; 3, LED display module; 301, RGB light-emitting pixel unit; 4, light processing layer; 5, virtual RGB pixel; 6, polarization structure layer; 601, circular polarization layer; 602, 1 / 2 phase difference layer; 603, UV layer; 7, haze layer. DETAILED DESCRIPTION

[0016] The application will be further described with reference to the drawings and specific embodiments, so that those skilled in the art can implement the application according to the description and the drawings, and the scope of protection of the application is not limited to the specific embodiments.

[0017] Those skilled in the art should understand that in the disclosure of the present application, the orientations or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the above terms cannot be understood as limiting the present application.

[0018] In addition, the terms "first", "second", "third" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0019] In the description of the embodiments of the present application, it should be further explained that, unless otherwise explicitly specified and limited, the terms "set", "mount", "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0020] A 3D LED display device for realizing resolution lossless display, comprising a device body, such as Figure 1As shown, the device body comprises an LED chip unit 1, an LED driving PCB board 2 located on the LED chip unit 1, and an LED display module 3 located on the LED driving PCB board 2, the LED display module 3 comprises a plurality of RGB light emitting pixel units 301, as shown Figure 2 As shown, the RGB sub-pixels of each RGB light emitting pixel unit 301 are arranged in a column direction, as shown Figure 1 As shown, the device body further comprises a light processing layer 4 located on the LED display module 3, as shown Figure 2 As shown, the light processing layer 4 is used to present each RGB light emitting pixel unit 301 as two columns of virtual RGB pixels 5, the RGB sub-pixels of each column of virtual RGB pixels 5 are arranged in a column direction, as shown Figure 1 As shown, the device body further comprises a polarization structure layer 6 located on the light processing layer 4 and a haze layer 7 located on the polarization structure layer 6, the polarization structure layer 6 comprises a circular polarization layer 601 located on the light processing layer 4 and a plurality of 1 / 2 phase difference layers 602 distributed on the circular polarization layer 601, each 1 / 2 phase difference layer 602 is located above one of the virtual RGB pixels 5 of each RGB light emitting pixel unit 301, the 1 / 2 phase difference layer 602 is used to rotate the polarized light emitted from the one of the virtual RGB pixels 5 by 180 degrees, the polarization structure layer 6 further comprises a UV layer 603 filled in the gap between the 1 / 2 phase difference layers 602.

[0021] As shown Figure 2As shown, due to the text limit, only four RGB light-emitting pixel units 301 are illustrated for illustrating the technical scheme of the present application, the four RGB light-emitting pixel units 301 are A0, A1, A2 and A3, the RGB sub-pixels in the four RGB light-emitting pixel units 301 are arranged in the column direction, by setting a light processing layer 4 on the RGB light-emitting pixel unit 301, the light processing layer 4 presents the four RGB light-emitting pixel units 301 as eight columns of virtual RGB pixels 5, i.e. A0-1, A0-2, A1-1, A1-2, A2-1, A2-2, A3-1 and A3-2, the eight columns of virtual RGB pixels 5 are pasted together left and right, it is assumed that the RGB light-emitting pixel unit 301 A0 presents a left eye image, the RGB light-emitting pixel unit 301 A1 presents a right eye image, the RGB light-emitting pixel unit 301 A2 presents a left eye image, and the RGB light-emitting pixel unit 301 A3 presents a right eye image, in the actual situation, a plurality of RGB light-emitting pixel units 301 are imaged alternately left and right; after the light processing layer 4, the four RGB light-emitting pixel units 301 are presented as eight columns of virtual RGB pixels 5, in order to let the vision present a correct 3D effect, therefore, a 1 / 2 phase difference layer 602 is set above the virtual RGB pixel 5 A0-2, the polarization light emitted from the circular polarization layer 601 is rotated by 180 degrees, so that the polarization light corresponding to the virtual RGB pixel 5 A0-2 is suitable for the right eye of a person, while the UV layer 603 is set above the virtual RGB pixel 5 A0-1, the phase difference of the polarization light does not change, and the polarization light corresponding to the virtual RGB pixel 5 A0-1 still remains suitable for the left eye of a person; similarly, the 1 / 2 phase difference layer 602 is set above the virtual RGB pixel 5 A1-1, the polarization light emitted from the circular polarization layer 601 is rotated by 180 degrees, so that the polarization light corresponding to the virtual RGB pixel 5 A1-1 is suitable for the left eye of a person, while the UV layer 603 is set above the virtual RGB pixel 5 A1-2, the phase difference of the polarization light does not change, and the polarization light corresponding to the virtual RGB pixel 5 A1-2 still remains suitable for the right eye of a person; according to this design, the pixels suitable for the left eye are equal to the pixels suitable for the right eye, and both are equal to the pixels of the original RGB light-emitting pixel unit 301. Taking an LED display screen with a resolution of 1920*1080 as an example, the 3D LED display device designed according to the structure of the present application, the resolution actually received by the left eye of the audience is 1920*1080, and the resolution actually received by the right eye of the audience is also 1920*1080, there is no resolution loss, so the definition of the 3D LED display is greatly improved. Therefore, compared with the prior art, the present application improves the definition and reduces the graininess, achieves the effect of lossless display of the resolution of the 3D LED display device, and the cost of the 3D LED display device is low.

[0022] As shown in Figure 2 the total width of each two columns of virtual RGB pixels 5 is equal to the center distance between two adjacent RGB light-emitting pixel units 301, that is, the total width of virtual RGB pixel 5A0-2 and virtual RGB pixel 5A1-1 is equal to the center distance between RGB light-emitting pixel unit 301A0 and RGB light-emitting pixel unit 301A1, the total width of virtual RGB pixel 5A1-2 and virtual RGB pixel 5A2-1 is equal to the center distance between RGB light-emitting pixel unit 301A1 and RGB light-emitting pixel unit 301A2, and the total width of virtual RGB pixel 5A2-2 and virtual RGB pixel 5A3-1 is equal to the center distance between RGB light-emitting pixel unit 301A2 and RGB light-emitting pixel unit 301A3, which can avoid the situation of pixel overlap of virtual pixels and improve the 3D display clarity.

[0023] As shown in Figure 1 the light processing layer 4 adopts a three-prism or a column lens, and the column lens can specifically adopt a Fresnel column lens structure, which can present each RGB light-emitting pixel unit 301 as two columns of virtual RGB pixels 5, which is simple and convenient.

[0024] The haze of the haze layer is 30% to 60%.

Claims

1. A 3D LED display device for realizing resolution lossless display, comprising a device body, the device body comprising an LED chip unit (1), an LED driving PCB board (2) located on the LED chip unit (1), and an LED display module (3) located on the LED driving PCB board (2), characterized in that: The LED display module (3) comprises a plurality of RGB light-emitting pixel units (301), and RGB sub-pixels of each RGB light-emitting pixel unit (301) are arranged in a column direction; the device body further comprises a light processing layer (4) located on the LED display module (3), the light processing layer (4) is used for presenting each RGB light-emitting pixel unit (301) as two columns of virtual RGB pixels (5), and RGB sub-pixels of each column of virtual RGB pixels (5) are arranged in a column direction; the device body further comprises a polarization structure layer (6) located on the light processing layer (4) and a haze layer (7) located on the polarization structure layer (6); the polarization structure layer (6) comprises a circular polarization layer (601) located on the light processing layer (4) and a plurality of 1 / 2 phase difference layers (602) distributed on the circular polarization layer (601); each 1 / 2 phase difference layer (602) is located above one virtual RGB pixel (5) of each RGB light-emitting pixel unit (301); the 1 / 2 phase difference layer (602) is used for rotating polarized light emitted from the one virtual RGB pixel (5) by 180 degrees; and the polarization structure layer (6) further comprises a UV layer (603) filled in a gap between the 1 / 2 phase difference layers (602).

2. The 3D LED display device of claim 1, wherein: A total pixel width of every two columns of virtual RGB pixels (5) is equal to a center distance between two adjacent RGB light-emitting pixel units (301).

3. The 3D LED display device of claim 1 or 2, wherein: The light processing layer (4) adopts a three-prism structure, a cylinder lens structure or a Fennel structure.

Images