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公开(公告)号:US20240323555A1
公开(公告)日:2024-09-26
申请号:US18189662
申请日:2023-03-24
发明人: Kuo-Cheng LEE , Ping-Hao LIN , Yun-Wei CHENG , Bo-Ge HUANG
IPC分类号: H04N25/63 , H01L27/146 , H04N25/75
CPC分类号: H04N25/63 , H01L27/14623 , H04N25/75 , H04N25/131
摘要: An image sensor device may include a pixel sensor array and a black level correction (BLC) region. The BLC region may include a sensing region in a substrate and a light-blocking layer above the sensing region. An anti-reflection array may be formed in the light-blocking layer. The anti-reflection array includes holes, trenches, and/or other structural features such that the light-blocking layer includes two or more areas in which the top surface of the light-blocking layer is at different heights in the image sensor device. The different heights of the top surface of the light-blocking layer reduce the likelihood of light being reflected off of the light-blocking layer and toward the pixel sensor array. The anti-reflection array may reduce the likelihood of occurrence of flares or hot spots in images generated by the image sensor device, which may increase the image quality of the images generated by the image sensor device.