公开(公告)号：US12125448B2

公开(公告)日：2024-10-22

申请号：US18359134

申请日：2023-07-26

申请人： SEIKO EPSON CORPORATION

发明人： Tatsunori Nakahara

IPC分类号： G09G3/34

CPC分类号： G09G3/3426 ,  G09G2320/0242 ,  G09G2360/16

摘要： A circuit device includes a storage unit configured to store a plurality of lookup tables, and a luminance information calculation circuit configured to calculate luminance information indicating a luminance of light reaching a target pixel of a display panel from a backlight. The first lookup table is associated with a first light source element provided at a first position, and indicates a first attenuation rate distribution of the first light source element. The second lookup table is associated with a second light source element provided at a second position, and indicates a second attenuation rate distribution of the second light source element. The luminance information calculation circuit obtains a first attenuation rate of light reaching the target pixel from the first light source element based on the first lookup table, obtains a second attenuation rate of light reaching the target pixel from the second light source element based on the second lookup table, and calculates the luminance information based on the first attenuation rate and the second attenuation rate.