06788003 is referenced by 54 patents and cites 4 patents.

A light emitting device is provided, in which a change of luminance of an OLED is suppressed and a desired color display can be stably performed even if an organic light emitting layer is somewhat deteriorated or an environmental temperature is varied. Separately from a pixel portion for displaying an image, a pixel portion for measuring a driving current of the OLED is provided in the light emitting device. The driving current is measured in the pixel portion for measuring the driving current of the OLED, and a value of the voltage supplied to the above two pixel portions from a variable power supply is corrected such that the measured driving current has a reference value. With the above-described structure, a reduction of the luminance accompanied with the deterioration of the organic light emitting layer can be suppressed. As a result, a clear image can be displayed.

Title
Light emitting device
Application Number
10/60709
Publication Number
6788003 (B2)
Application Date
January 29, 2002
Publication Date
September 7, 2004
Inventor
Tomoyuki Iwabuchi
Kanagawa
US
Kazutaka Inukai
Kanagawa
US
Agent
Fish & Richardson PC
US
Assignee
Semiconductor Energy Laboratory
US
IPC
G09G 3/10
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