ALEXANDRIA, Va., March 19 -- United States Patent no. 12,255,214, issued on March 18, was assigned to HAMAMATSU PHOTONICS K.K. (Hamamatsu, Japan).
"Light detection device" was invented by Nao Inoue (Hamamatsu, Japan), Ryosuke Koike (Hamamatsu, Japan) and Haruyuki Nakayama (Hamamatsu, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A light detection device includes: a back-illuminated light receiving element; a circuit element; a connection member; an underfill; and a light shielding mask. The light shielding mask includes a frame having an opening and a light shielding layer formed on an inner surface of the opening. A first opening edge on the side of the circuit element in the opening is located at th...