US 11,940,691 B2
Liquid crystal display device
Ayumu Sato, Tokyo (JP)
Assigned to TOPPAN INC., Tokyo (JP)
Filed by TOPPAN INC., Tokyo (JP)
Filed on Apr. 7, 2022, as Appl. No. 17/715,489.
Application 17/715,489 is a continuation of application No. PCT/JP2020/038780, filed on Oct. 14, 2020.
Claims priority of application No. 2019-189202 (JP), filed on Oct. 16, 2019.
Prior Publication US 2022/0229332 A1, Jul. 21, 2022
Int. Cl. G02F 1/1335 (2006.01); G02F 1/1337 (2006.01); G02F 1/1343 (2006.01); G02F 1/1362 (2006.01)
CPC G02F 1/133553 (2013.01) [G02F 1/133742 (2021.01); G02F 1/134309 (2013.01); G02F 1/136227 (2013.01); G02F 2203/09 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A liquid crystal display device comprising:
first and second substrates;
a liquid crystal layer interposed between the first and second substrates and set in vertical alignment (VA) when no electric field is applied;
a switching element provided on the first substrate;
a connection electrode provided on the first substrate, connected to the switching element, and extending in a first direction;
a first reflection film provided above the switching element with an insulating film therebetween, and configured to reflect light;
a first pixel electrode provided above the first reflection film with an insulating film therebetween, overlapping the first reflection film in planar view, and formed of a transparent electrode;
a second pixel electrode located adjacent to the first pixel electrode in the first direction, and formed of a transparent electrode;
first and second contacts which respectively connect the first and second pixel electrodes to the connection electrode;
a first thickness adjusting layer provided on the second substrate and overlapping the first reflection film in planar view;
a common electrode provided on the second substrate and the first thickness adjusting layer; and
first and second protrusions provided on the common electrode and respectively corresponding to the first and second pixel electrodes,
wherein a thickness of the liquid crystal layer in a reflection area where the first reflection film is disposed is smaller than a thickness of the liquid crystal layer in a transmission area where no reflection film is disposed by a thickness of the first thickness adjusting layer, and
the first protrusion is located closer to the first thickness adjusting layer than a center of the first pixel electrode is in the first direction.