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Shenzhen Jinglianxing Technology Obtains Patent for Optically Rotated One - Piece Black Composite Film for LED Screens
On August 15,2025,information from the National Intellectual Property Administration showed that Shenzhen Jinglianxing Technology Co.,Ltd.obtained a patent titled"LED Screen and Optically Rotated One-Piece Black Composite Film for LED Screen",with the authorization announcement number CN223230087U and the application date in October 2024.
The patent abstract indicates that the LED screen provided in this application includes an LED screen body and an optically rotated one-piece black composite film that adheres to the outer surface of the LED screen body.The composite film consists of an adhesive layer,a quarter-wave plate layer,and a polarizer layer stacked in sequence.The adhesive layer is attached to the light-emitting side of the LED screen body.The polarizer layer is used to convert ambient light into first-line polarized light when ambient light is incident.The quarter-wave plate layer converts the first-line polarized light into left-or right-hand circularly polarized light.When the left-or right-hand circularly polarized light is reflected by the LED screen body,it is converted into the opposite right-or left-hand circularly polarized light.When the opposite circularly polarized light is emitted,it is converted into second-line polarized light by the quarter-wave plate layer.The second-line polarized light rotates 90 degrees relative to the first-line polarized light and is blocked by the polarizer,making the LED screen appear as one-piece black when turned off.
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