Optical modulation element

Abstract

The present application relates to an optical modulation element and a use thereof, and improves the surface waviness of a substrate film, which is caused by a spacer, so as to suppress a surface waviness phenomenon observed when the surface reflection is visually observed. The optical modulation element can be applied to various flexible display devices, thereby improving the quality of these products.

Description

technical field

[0001] The present application relates to light modulating elements and their use.

[0002] This application claims the benefit of priority based on Korean Patent Application No. 10-2018-0076481 filed on July 2, 2018 and Korean Patent Application No. 10-2019-0079555 filed on July 2, 2019, the disclosure of which Incorporated herein in its entirety by reference. Background technique

[0003] In Patent Document 1 (Korean Patent Laid-Open No. 1775332), a light modulation element such as a liquid crystal cell may generally include a spacer to maintain a cell gap between an upper substrate film and a lower substrate film. In addition, when the light modulation element is applied to a strap-on flexible display device such as eyewear, flexible substrate films may be required for the upper and lower substrate films.

[0004] However, when a flexible base film is applied to manufacture a light modulation element, there may arise a problem that, due to a difference i...

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