LED display screen

A technology of LED display screen and LED array, which is applied in the direction of instruments, identification devices, etc., can solve the problems affecting the 3D display effect, and achieve the effects of avoiding mutual interference of light, increasing pixel filling rate, and eliminating graininess

Pending Publication Date: 2020-04-07
APPOTRONICS CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the LED lamp bead is approximately a Lambertian light source, there is 180° divergent light in the viewing direction. When the polarizer is at a certain distance from the LED lamp bead, the light from the lamp bead is easy to Irradiate to the polarizer corresponding to the adjacent lamp beads, so that the same polarizer receives adjacent light with different image content, which affects the final 3D display effect

Method used

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Experimental program
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Effect test

Embodiment 1

[0048] Figure 7 Is a cross-sectional view of the LED display screen in the first embodiment of the present invention; Figure 7 As shown, in this embodiment, the polarizer 300 is disposed between the diffuser film 400 and the matrix light-shielding frame 200, that is, the LED display screen includes an LED array 100, a matrix light-shielding frame 200, a polarizer 300 and Diffusion film 400. The LED light-emitting units 110 on the LED array 100 are arranged in the hollow grid 210 of the matrix light-shielding frame 200. In order to ensure that the LED display screen has a higher screen-to-body ratio, the LED light-emitting units 110 in the LED array 100 are connected to the driver The circuit 120 and the driving chip 130 are arranged on different sides of the substrate. The polarizer 300 may be Figure 4 to Figure 6 Any of the polarizers shown in.

[0049] In order to improve the degree of polarization and the polarization effect of the emitted light, in this embodiment, the di...

Embodiment 2

[0053] Picture 9 Is a cross-sectional view of the LED display screen in the second embodiment of the present invention; Picture 9 As shown, the difference between this embodiment and the first embodiment is that the polarizer 300 is arranged on the outside of the diffusion film 400 (the side away from the LED array 100), that is, the diffusion film 400 is arranged on the Between the polarizer 300 and the matrix light shielding frame 200. The polarizer 300 may be Figure 4 to Figure 6 Any of the polarizers shown in. The polarizer in this embodiment can also increase the degree of polarization of the emitted light. Compared with the first embodiment, the feature of this embodiment is that the light is non-polarized light before it is incident on the polarizer 300 (the diffusion film 400 does not change the polarization state of the light emitted by the LED), so that the polarizer emitted by the polarizer 300 is not polarized. Will be affected by the scattering of the diffusion...

Embodiment 3

[0057] Picture 10 Is a cross-sectional view of the LED display screen in the third embodiment of the present invention; Picture 10 As shown, the difference between this embodiment and the first embodiment is that the polarizer 300 is disposed between the LED array 100 and the matrix light-shielding frame 200. The polarizer 300 may be Figure 4 to Figure 6 Any of the polarizers shown in.

[0058] In order to eliminate the light crosstalk between adjacent LED light-emitting units 110 of the LED array 100, the LED array 100 further includes a light cover 140 arranged on the substrate, and the light cover 140 is provided with the same number of switches as the LED light-emitting units 110. Each LED light-emitting unit 110 is located at the center of an opening, and the height of the light cover is greater than or equal to the height of the LED light-emitting unit 110, so that the light emitted by the LED light-emitting unit 110 will not pass through the polarizer. Interfere with ea...

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Abstract

An LED display screen includes: an LED array including a plurality of LED light emitting units, the plurality of LED light emitting units being disposed on a substrate; a diffusion film that is arranged on the light emitting side of the LED array; a matrix shading frame that is arranged between the LED array and the diffusion film and comprises a hollowed-out grid array, the hollowed-out grid array comprises a plurality of hollowed-out grids, the hollowed-out grids are in one-to-one correspondence with the LED light-emitting units, and the projections of the hollowed-out grids on the substratesurround the corresponding LED light-emitting units; and a polaroid that is arranged on a light path through which light emitted by the LED array passes and comprises first polarization areas and second polarization areas which are alternately arranged, and the light emitted by the LED array passes through the first polarization areas to form first polarized light and passes through the second polarization areas to form second polarized light. According to the invention, the matrix shading frame corresponding to the LED array is arranged on the light path through which the light emitted by the LED array passes, so that the light emitted by the LED array is limited in the pixel units, and the mutual interference of the light of the adjacent LED light-emitting units is avoided.

Description

Technical field [0001] The invention relates to an LED display screen and belongs to the technical field of LED display. Background technique [0002] When the human eye views an actual object, the three-dimensional sense or 3D vision is generated because the angle of the left and right eyes of the object is slightly different, and the brain synthesizes a three-dimensional image. When watching a two-dimensional screen, in order to make the audience also have three-dimensional vision, the video is recorded from two angles imitating the human eye, and then played to the left and right eyes respectively. In order to prevent the content of the images received by the left and right eyes from affecting each other, a common method is to use polarized optics. The viewer wears polarized glasses. The left and right lenses have different polarization directions, and the image source is also projected according to these two polarization directions. Perspective image. The two polarization s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09F9/33G02B30/25
CPCG09F9/33G02B30/25
Inventor 胡飞李士杰李屹
Owner APPOTRONICS CORP LTD
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