US 12,443,068 B2
Display device
Keisuke Yoshida, Kameyama (JP); Satoshi Ueda, Kameyama (JP); and Katsunori Misaki, Kameyama (JP)
Assigned to Sharp Display Technology Corporation, Kameyama (JP)
Filed by Sharp Display Technology Corporation, Kameyama (JP)
Filed on Feb. 2, 2024, as Appl. No. 18/431,008.
Claims priority of application No. 2023-031520 (JP), filed on Mar. 2, 2023.
Prior Publication US 2024/0295769 A1, Sep. 5, 2024
Int. Cl. G02F 1/1335 (2006.01)
CPC G02F 1/133512 (2013.01) [G02F 1/133514 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A display device comprising:
a first substrate;
a second substrate opposing to the first substrate;
a first color filter that is disposed on the second substrate's side with respect to the first substrate;
a second color filter that is disposed in a same layer as the first color filter and exhibits a different color from the first color filter;
a first pixel electrode that is disposed on the second substrate's side with respect to the first color filter and disposed to overlap the first color filter;
a second pixel electrode that is disposed on the second substrate's side with respect to the second color filter and disposed to overlap the second color filter;
a common electrode that overlaps the first pixel electrode and the second pixel electrode;
an insulating film that is interposed between the common electrode and the first pixel electrode and the second pixel electrode; and
a light blocking part that is disposed, at a boundary between the first color filter and the second color filter, on the second substrate's side with respect to the first color filter and the second color filter,
wherein the light blocking part includes a light blocking film, a first transmission film that is disposed on the second substrate's side of the light blocking film, and a reflection/transmission film that is disposed on the second substrate's side of the first transmission film,
the light blocking film has a light transmittance lower than a light transmittance of the first transmission film and a light transmittance of the reflection/transmission film,
the first transmission film has the light transmittance higher than the light transmittance of the reflection/transmission film,
the reflection/transmission film has a light reflectance higher than a light reflectance of the first transmission film and lower than a light reflectance of the light blocking film,
the first color filter, the second color filter, the first pixel electrode, the second pixel electrode, the common electrode, the insulating film, and the light blocking part are provided to the first substrate,
the light blocking part is disposed between the insulating film and an upper layer electrode that is an electrode located on the second substrate's side of the first pixel electrode and the second pixel electrode or the common electrode, and
the first transmission film extends beyond a formation range of the light blocking part and is disposed in contact with the insulating film beyond the formation range of the light blocking part.