Polarizing plate, manufacturing method thereof and corresponding device

Abstract

The invention relates to a polarizing plate, a manufacturing method thereof and a corresponding device. In the prior art, the schemes such as surface pad pasting, software adjusting and LED changing adopted by an existing liquid crystal display screen for reducing blue light damages respectively have certain defects, so that how to reduce blue light is the problem to be solved at present. The polarizing plate comprises a polarizing layer capable of reflecting blue light. The polarizing layer comprises a PVA film and a reflection structure distributed in the PVA film and incompatible with the PVA film. The reflection structure comprises cholesteryl phase liquid crystals. The arranging direction of the cholesteryl phase liquid crystals is identical with the polarizing direction of the polarizing layer. According to the invention, the reflection structure is added to the PVA film of the polarizing layer, and the arranging direction of the cholesteryl phase liquid crystals included in the reflection structure is identical with the polarizing direction of the polarizing layer, so that the reflection structure is capable of reflecting blue light; and when the polarizing plate is applied to a display device, the blue light entering a human eye can be effectively reduced, so that a blue light prevention effect is achieved.

Description

Technical field [0001] The present invention relates to the field of display technology, and in particular to a polarizing plate, its manufacturing method and corresponding devices. Background technique [0002] With the popularization of electronic digital products, people cannot do without computers, notebooks, mobile phones, TVs and other digital products every day, and the screens of these electronic devices are mostly LCD displays. Liquid crystal display screens generally need to use LEDs (Light Emitting Diodes, light emitting diodes) to provide backlights. The reason why the white light emitted by the LED light sources can be formed is mainly to excite phosphors with blue light with a wavelength of 440nm-460nm. The lower the wavelength, the stronger the excitation ability. Because the short-wave blue light has extremely high energy, it can penetrate the lens directly to the retina, thus causing certain damage to the user's eyes, and in severe cases, it may even cause perman...

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a polarizing plate, its manufacturing method and corresponding device, which are used to solve the defects of surface film, software adjustment, and changing LED in order to reduce blue light damage of current liquid crystal display screens. Therefore, how to effectively Reducing blue light is an urgent problem to be solved

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