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Method for installing screen film for LED display screen and display device

A LED display and screen technology, applied in the direction of identification devices, instruments, etc., can solve problems such as difficult to eliminate moiré, and achieve the effect of eliminating moiré

Active Publication Date: 2017-01-25
国家广播电影电视总局广播电视规划院 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the pixel array of the LED display and the CCD array of the camera exist naturally, it is difficult to eliminate moiré by changing the shooting method or image processing method

Method used

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  • Method for installing screen film for LED display screen and display device
  • Method for installing screen film for LED display screen and display device
  • Method for installing screen film for LED display screen and display device

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Embodiment Construction

[0028] The embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0029] In order to avoid the difference between the pixel array of the LED display and the CCD array of the camera, the present invention can effectively reduce or eliminate moiré by setting a specific screen film in front of the LED display, such as figure 2 mentioned. figure 2 Schematic diagram of the process of adding screen film to the LED display.

[0030] The method for installing a screen film for an LED display in an embodiment of the present invention may include the following steps:

[0031] (1) Measuring the optical indicators of the bare screen of the LED display

[0032] For each LED display, measure the optical index of the LED display in the bare screen state. Among them, the optical index can include any combination of brightness, gray scale identification level, sharpness, color temperature, color gamut, color reproduction, view...

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PUM

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Abstract

The invention discloses a method for installing a screen film on an LED display screen. The method includes the steps that optical indexes of the bare LED display screen are measured and include the luminance and the gray scale identification level; a screen film is selected, wherein the thickness of the selected screen film is made to meet the requirements that when the screen film is tightly attached to the LED display screen, difference between the luminance of the LED screen and the luminance of the bare screen is no larger than 10 cd / m<2>, the gray scale identification level of the LED screen is kept consistent with that of the bare screen, and the frame definition of the LED screen is smaller than that of the bare screen by 100 TVL at most; the selected screen film is installed on the LED display screen. Through the method, the moire effect can be effectively reduced or eliminated.

Description

technical field [0001] The invention relates to the technical field of LED display screens, and more particularly, to a method for installing a screen film for an LED display screen and a display device. Background technique [0002] Moiré refers to irregular interference fringes that appear on the photosensitive devices of digital cameras or digital video cameras. When the spatial frequency of the CCD (CMOS) pixel of the photosensitive element is close to the spatial frequency of the stripes in the image, moiré will occur. The generation of moiré is actually a manifestation of the beat principle. [0003] For the LED display screen used in the studio, the spacing between the pixels on the screen is relatively large (the pixel pitch is usually between 1.9mm and 4mm), and the entire display screen forms a pixel array, such as Figure 1A shown; and the photosensitive device CCD of the camera is also an array, such as Figure 1B shown. During regular shooting (the distance b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09F9/33
Inventor 朱伟邓向冬谭连起王惠明孙牧李厦罗啸刘骏冯强
Owner 国家广播电影电视总局广播电视规划院
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