A multiple-cell led arrangement, related cell and...

H - Electricity – 05 – B

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H05B 33/08 (2006.01)

Patent

CA 2616868

A LED arrangement includes: - a plurality of cells (0, 1, 2, 3) each including at least one respective LED having a binning class as a function of its emission wavelength (L1, L2) and brightness (B1, B2) characteristics, - a plurality of impedance elements (R0, R1, R2, R3) respectively coupled with the cells (0, 1, 2, 3), each impedance element (R0, R1, R2, R3) having an impedance value indicative of the binning class of the at least one LED included in the respective cell (0, 1, 2, 3), and - a controller (5) configured for sensing (6, 80, 81, 82, 83) the impedance values of the impedance elements (R0, R1, R2, R3) and adaptively drive each cell (0, 1, 2, 3) as a function of its binning class as indicated by the impedance element (R0, R1, R2, R3) coupled to the cell.

La présente invention se rapporte à un agencement de DEL, qui comprend : - une pluralité de cellules (0, 1, 2, 3), dont chacune contient au moins une DEL respective dotée d'une classe de regroupement qui est fonction de ses caractéristiques de longueur d'onde d'émission (L1, L2) et de luminance (B1, B2) ; - une pluralité d'éléments d'impédance (R0, R1, R2, R3), couplés respectivement avec lesdites cellules (0, 1, 2, 3), chaque élément d'impédance (R0, R1, R2, R3) présentant une valeur d'impédance indiquant la classe de regroupement d'au moins une DEL contenue dans la cellule (0, 1, 2, 3) respective ; et - un contrôleur (5), adapté pour détecter (6, 80, 81, 82, 83) les valeurs d'impédance des éléments d'impédance (R0, R1, R2, R3), et pour entraîner de manière adaptative chaque cellule (0, 1, 2, 3) en fonction de sa classe de regroupement telle qu'indiquée par l'élément d'impédance (R0, R1, R2, R3) couplé à la cellule.

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