US 12,446,337 B2
Pixel structure and image sensor including a nano antenna unit
Liang Yang, Beijing (CN); Yongjun Liu, Beijing (CN); and Hui Yang, Beijing (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Guangdong (CN)
Filed on May 13, 2022, as Appl. No. 17/663,284.
Application 17/663,284 is a continuation of application No. PCT/CN2020/128425, filed on Nov. 12, 2020.
Claims priority of application No. 201911110638.X (CN), filed on Nov. 14, 2019.
Prior Publication US 2022/0278145 A1, Sep. 1, 2022
Int. Cl. H10F 30/22 (2025.01); H10F 39/00 (2025.01)
CPC H10F 39/802 (2025.01) [H10F 30/22 (2025.01)] 19 Claims
OG exemplary drawing
 
1. A pixel structure, comprising:
a metallic ground plane;
a substrate unit cell, wherein the substrate unit cell is located on the metallic ground plane;
a nano antenna unit, wherein the nano antenna unit is located on the substrate unit cell, and comprises one or more nano antennas, wherein each of the one or more nano antennas corresponds to one optical band, and comprises M parts, wherein a nano gap is formed between the M parts, wherein the M parts and the nano gap have a function of a metal-insulator-metal diode, wherein M is a multiple of 2, and wherein each of the M parts and a part adjacent to the part have different work functions; and
a packaging unit, wherein the packaging unit covers the nano antenna unit.