Display element and display device

Details Display element and display device Display element and display device

2008-02-20

2008-12-02

Osorio, Ricardo L (Department: 2629)

Computer graphics processing and selective visual display system

Display driving control circuitry

Display power source

C345S076000

Reexamination Certificate

active

07460116

ABSTRACT:
A display element included in a display device is provided with a TFT circuit portion and a pixel aperture portion to which an organic EL element material is applied and which emits light in accordance with a current from the TFT circuit portion, as well as a scanning signal line electrode, a data signal line electrode and a power source line electrode. The resistance Re of the power source line electrode can be reduced, because the electrode width at a portion where the power source line electrode is in contact with the pixel aperture portion is larger than the electrode width at other portions. The resistance ratio Rx/Re between the electrode resistance Re and a combined resistance Rx of a current path from the power source line electrode through the pixel aperture portion is at least 105. Thus, a display element and a display device are realized, which have little luminance variation within the display screen, which have a high numerical aperture, a high light emission efficiency and a long lifetime.

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