07623098 is referenced by 37 patents and cites 87 patents.

The present invention is intended to suppress power consumption of an EL display. In accordance with the brightness of an image to be displayed in a pixel portion, the contrast of the image is determined whether to be inverted or not, and the number of bits of the digital video signal to be input into the pixel portion is reduced, and the magnitude of a current to flow through the EL element is allowed to be maintained at a constant level even when a temperature of an EL layer changes by providing the EL display with another EL element to be used for monitoring a temperature.

Title
Display device
Application Number
10/920279
Publication Number
7623098 (B2)
Application Date
August 18, 2004
Publication Date
November 24, 2009
Inventor
Mai Osada
Kanagawa
JP
Mitsuaki Osame
Kanagawa
JP
Jun Koyama
Kanagawa
JP
Shunpei Yamazaki
Tokyo
JP
Agent
Fish & Richardson P C
Assignee
Semiconductor Energy Laboratory
JP
IPC
G09G 3/30
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