US 11,726,369 B2
Substrate
Cheol Ock Song, Daejeon (KR); Han Min Seo, Daejeon (KR); Nam Seok Bae, Daejeon (KR); Jae Sung Han, Daejeon (KR); and Seung Heon Lee, Daejeon (KR)
Assigned to LG Chem, Ltd.
Appl. No. 17/269,110
Filed by LG Chern, Ltd., Seoul (KR)
PCT Filed Nov. 18, 2019, PCT No. PCT/KR2019/015720
§ 371(c)(1), (2) Date Feb. 17, 2021,
PCT Pub. No. WO2020/105977, PCT Pub. Date May 28, 2020.
Claims priority of application No. 10-2018-0142971 (KR), filed on Nov. 19, 2018.
Prior Publication US 2021/0311343 A1, Oct. 7, 2021
Int. Cl. G02F 1/1339 (2006.01)
CPC G02F 1/13394 (2013.01) [G02F 1/13398 (2021.01)] 17 Claims
OG exemplary drawing
 
1. A substrate, comprising: a base layer; a plurality of column spacers disposed on the base layer; and a plurality of ball spacers, wherein at least one of the plurality of ball spacers is attached to or embedded in at least one of the plurality of column spacers, wherein a ratio (A/B) of a number (A) of the plurality of column spacers to which a ball spacer of the plurality of ball spacers is attached or in which the a ball spacer of the plurality of ball spacers is embedded relative to a number (B) of column spacers of the plurality of column spacers to or in which a ball spacer of the plurality of ball spacers is not attached or embedded is in a range from 0.01 to 10.