US 12,345,978 B2
Anti-glare film, polarizing plate and display apparatus
Hanna Lee, Daejeon (KR); Seung Hun Lee, Daejeon (KR); Jung Hyun Seo, Daejeon (KR); Jinseok Byun, Daejeon (KR); and Yeongrae Chang, Daejeon (KR)
Assigned to LG CHEM, LTD., Seoul (KR)
Appl. No. 18/004,976
Filed by LG CHEM, LTD., Seoul (KR)
PCT Filed Jul. 20, 2021, PCT No. PCT/KR2021/009325
§ 371(c)(1), (2) Date Jan. 10, 2023,
PCT Pub. No. WO2022/019610, PCT Pub. Date Jan. 27, 2022.
Claims priority of application No. 10-2020-0089832 (KR), filed on Jul. 20, 2020; application No. 10-2020-0089833 (KR), filed on Jul. 20, 2020; and application No. 10-2020-0091827 (KR), filed on Jul. 23, 2020.
Prior Publication US 2023/0341590 A1, Oct. 26, 2023
Int. Cl. G02B 1/18 (2015.01); G02B 1/111 (2015.01); G02F 1/1335 (2006.01)
CPC G02F 1/133502 (2013.01) [G02B 1/111 (2013.01); G02B 1/18 (2015.01)] 20 Claims
OG exemplary drawing
 
1. An anti-glare film comprising an acrylic substrate and a coating layer located on at least one side of the acrylic substrate,
wherein in a graph derived from the result of Raman spectroscopy performed for the coating layer in the thickness direction from one side of the coating layer opposite to the acrylic substrate, the graph having the Y axis being a ratio of a band area at the Raman peak of 1755 cm−1 to a band area at the Raman peak of 1722 cm−1 and the X axis being a distance in the thickness direction from the one side of the coating layer opposite to the acrylic substrate,
a rate of change of a band area ratio according to the following Equation 1 is 0.001 to 0.033/μm:
Rate of change of band area ratio=|A2−A1|/3  [Equation 1]
In the Equation 1,
A1 is a Y value when an X value is 4 μm, and
A2 is a Y value when an X value is 7 μm.