Low-power organic light emitting diode pixel circuit

Details Low-power organic light emitting diode pixel circuit Low-power organic light emitting diode pixel circuit

G - Physics

09

F

G09F 9/33 (2006.01) G09G 3/14 (2006.01) G09G 3/32 (2006.01) G11C 5/02 (2006.01) G11C 11/419 (2006.01) H01L 27/15 (2006.01) H01L 51/00 (2006.01) H01L 27/32 (2006.01) H01L 33/00 (2006.01)

Patent

CA 2432530

A pixel circuit comprises an organic light emitting diode (OLED), and a static memory for storing data that represents an operational state of the OLED. In alternative embodiments, a pixel circuit may include a complementary metal oxide semiconductor (CMOS) circuit for controlling the OLED, a protection circuit for protecting the CMOS circuit from an over-voltage condition, and a current source with a field effect transistor (FET) having a static gate to source voltage that is greater than a threshold voltage of the FET.

La présente invention concerne un circuit de pixels comprenant une diode électroluminescente organique (OLED), et une mémoire statique permettant le stockage de données, qui représente un état de fonctionnement de l'OLED. Dans d'autres modes de réalisation, un circuit de pixels peut comprendre un circuit métal-oxyde-semi-conducteur complémentaire (CMOS) permettant de commander l'OLED, un circuit de protection permettant de protéger le circuit CMOS d'un état de surtension, et une source de courant avec un transistor à effet de champ (TEC) possédant une grille statique pour une tension de source qui est supérieure à une tension de seuil du TEC.

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