| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a surface light source and a liquid crystal display which suppress the moving image blur, and uniformalize the brightnesses of emission light among blocks without installing in every block a sensor to detect the light source emission quantity in every block. <P>SOLUTION: The surface light source is constituted of: an emission region which is divided into two or more light emission blocks 32; a point light source driver 24 to drive point light sources 33 to 35 for each light emission block 32; an optical sensor 22 to detect the light quantities on the basis of led-out light from the two or more light emission blocks 32; and a drive control part 23 which adjusts the emission quantity of each point light source corresponding to the light emission block, based on the light quantity detected in a lighting period by providing a lighting period when only one block among the light emission blocks 32 whose light quantities are detected by the optical sensor 22 is lit. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
