07122969 is referenced by 15 patents and cites 6 patents.

No need of lowering off-current of a switching transistor, fewer luminance variations of a light emitting element between pixels due to characteristic variations of a driving transistor, and less risk of steps due to increase in the number of wirings. A video signal for light emission or non-emission of a pixel is input to a gate of a current controlling transistor operated in a linear region, which is connected in series with the driving transistor, through a switching transistor. Since a voltage Vds between a source and a drain of the current controlling transistor is small, small changes in a voltage Vgs between a gate and a source thereof do not affect a current flowing in a load. The current flowing in the light emitting element is determined by the driving transistor operated in a saturation region, and a fixed potential is input to the gate thereof during light emission.

Title
Element substrate and light emitting device
Application Number
10/866081
Publication Number
7122969 (B2)
Application Date
June 14, 2004
Publication Date
October 17, 2006
Inventor
Mitsuaki Osame
Kanagawa
JP
Yu Yamazaki
Kanagawa
JP
Aya Anazai
Kanagawa
JP
Ryota Fukumoto
Kanagawa
JP
Agent
Fish & Richardson P C
Assignee
Semiconductor Energy Laboratory
JP
IPC
G09G 3/10
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