Methods for preparing integral black matrix/color filter...

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B23K 26/00 (2006.01) B41M 5/24 (2006.01) B41M 5/26 (2006.01) G02B 5/20 (2006.01) G02B 5/22 (2006.01) G02F 1/133 (2006.01) G02F 1/1335 (2006.01)

Patent

CA 2194459

A method for the manufacture of a matrix on a substrate, said matrix being particularly useful in the formation of color filter elements, the process comprising the steps of: a) providing an imageable article comprising a substrate having on at least one surface thereof a black layer, b) directing energy of sufficient intensity at said black layer to transparentize black layer, c) said directing of energy being done so that black layer is removed in some areas, but is not removed in other areas so that borders of black layer surround areas from which black layer has been removed. A preferred method deposits colorant material within the open areas of the matrix by thermal transfer, e.g., laser induced thermal transfer, of colorant material to form a filter element.

La présente invention concerne un procédé de fabrication d'une matrice sur un substrat, ladite matrice étant particulièrement destinée à la réalisation d'éléments de filtres couleurs. Le procédé consiste: a) à réaliser un article permettant la constitution d'une image et se composant d'un substrat présentant une couche noire sur l'une au moins de ses faces; b) à envoyer un flux d'énergie d'une intensité suffisante sur ladite couche noire pour la rendre transparente; c) exécuter ledit envoi de flux d'énergie de façon à enlever la couche noire dans certaines zones, sans l'enlever dans d'autres zones, afin que des bordures de couche noire entourent les zones dans lesquelles la couche noire a été enlevée. Un procédé préféré consiste à déposer une substance colorante dans les zones découvertes de la matrice selon une technique de transfert thermique de substance colorante de façon à constituer un élément de filtre, ledit transfert thermique étant par exemple, induit par laser.

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