True color flat panel display using an led dot matrix and...

G - Physics – 09 – G

Patent

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G09G 3/32 (2006.01) G09F 9/33 (2006.01) H01L 25/075 (2006.01)

Patent

CA 2241555

A full color flat panel display module is formed of a matrix of pixels in rows and columns. Each pixel is formed of respective red, green and blue solid state light emitting diodes that can form any color on that portion of a CIE curve that falls within a triangle whose sides are formed by a line on the CIE curve between 430 nm and 660 nm, a line between 660 nm and a point between 500 and 530 nm, and a line between the 500-530 nm point and 430 nm. The matrix of commonly connected LEDs is driven by applying different voltages to the commonly connected different color LEDs in the matrix of LEDs. A drive circuit may have commonly connected drivers which multiplex voltages to an array of commonly connected LEDs such that different voltages may be applied to LEDs having different operating voltages.

La présente invention concerne un module d'afficheur plat en couleurs vraies constitué d'une matrice de pixels en lignes et en colonnes. Chaque pixel est constitué de diodes électroluminescentes transistorisées, respectivement rouges, vertes et bleues, capables de former toute couleur dans la partie de la courbe CIE s'inscrivant dans un triangle dont les côtés sont une ligne de la courbe CIE située entre 430 nm et 660 nm, une ligne entre 660 nm et un point entre 500 et 530 nm, et une ligne entre le point 500 - 530 nm et 430 nm. La matrice des diodes électroluminescentes connectées en commun est commandée par application de tensions différentes aux diodes électroluminescentes des différentes couleurs connectées en commun dans la matrice de diodes électroluminescentes. Un circuit de commande peut comporter des pilotes connectés en commun multiplexant les tensions à une suite de diodes électroluminescentes connectées en commun de façon à permettre l'application de tensions différentes à des diodes électroluminescentes caractérisées par des tensions de fonctionnement différentes.

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