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Polarizing plate and display device including the same

A polarizing plate and polarizing technology, applied in the field of polarizing plate, can solve problems such as image distortion, poor color tone and clarity, and achieve the effect of improving camera performance

Pending Publication Date: 2022-03-11
SAMSUNG SDI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, improvement in light transmittance alone can provide poor tone and sharpness of captured images, and can lead to severe distortion of images

Method used

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  • Polarizing plate and display device including the same
  • Polarizing plate and display device including the same
  • Polarizing plate and display device including the same

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0084] The polyvinyl alcohol film washed with water was subjected to swelling in a swelling bath filled with water at 30°C.

[0085] Then, the polyvinyl alcohol film was immersed in an aqueous solution containing 3% by weight of potassium iodide in a 30° C. dyeing bath for 30 seconds to 200 seconds. The dyed polyvinyl alcohol film was transferred to a wet crosslinking bath filled with an aqueous solution containing 3% by weight boric acid at a temperature of 30°C to 60°C. Next, the polyvinyl alcohol film was stretched to a total elongation of 6 times in an aqueous solution containing 3% by weight of boric acid at a temperature of 50°C to 60°C to form a polarizer. A stacked structure was prepared by bonding a protective film to both surfaces of the polarizer via an adhesive (Z-200, Nippon Goshei Co., Ltd.).

[0086] The stack was cut into a predetermined size, and the energy per pulse per unit area was 0.17 Joules / square centimeter·pulse (J / cm 2 ·pulse) was partially irradiat...

example 2 to example 4

[0088] Polarizing plates each having a depolarization region were fabricated in the same manner as in Example 1 except that the wavelength and energy per pulse per unit area were changed as listed in Table 1 when irradiated with a femtosecond laser beam.

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Abstract

A polarizing plate and a display device including the same are provided. The polarizing plate includes a polarizer and a protective film stacked on at least one surface of the polarizer, in which the polarizing plate includes at least one depolarization region in an in-plane direction thereof, and the depolarization region has a maximum absorptivity of 0.5 to 1.5 in a wavelength range of 380 nm to 420 nm and a light transmittance ratio of a light transmittance at a wavelength of 590 nm to a light transmittance at a wavelength of 400 nm of 1 to 2.

Description

technical field [0001] The invention relates to a polarizing plate and a display device comprising the polarizing plate. More particularly, the present invention relates to a polarizing plate having a depolarizing region capable of improving tone and clarity of an image while preventing image deformation when photographing therethrough, and a display device including the polarizing plate. Spend. Background technique [0002] The polarizing plate has a function of polarizing light emitted through a liquid crystal panel of an optical display. The polarizing plate includes a polarizer and a protective film stacked on at least one surface of the polarizer. Generally speaking, an optical display not only has a screen display function, but also has various other functions, including a camera function, a video communication function, and the like. Due to the polarizing function of the polarizer, the polarizer cannot achieve a transmittance of 50% or more of light, thus providing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/30G02B1/14G02F1/1335
CPCG02B5/30G02B1/14G02F1/133528G02B5/22G02F2201/58G02F1/133538G02F2201/50G02F2203/05G02F2202/043G02B5/3025G02B5/208G02B5/223G02B5/3033G02F1/133509
Inventor 柳政勋金奉春李相钦具埈谟申东允
Owner SAMSUNG SDI CO LTD