Koninklijke Philips Corporation N.v.

Mitsuboshi Diamond Industrial Co., Ltd.

Raymond Gijsbertus Anthonius Van Agthoven

Nicolaas Petrus Willard

Abraham Rudolf Balkenende

Hans Zuidema

Petrus Henricus Maria Timmermans

Henricus Joseph Cornelus Kuijpers

Ivar Jacco Boerefijn

Rudolf Heinrich Brzesowsky

A method of manufacturing a shaped polymer device comprises forming a planar polymer layer over a substrate which has a lower coefficient of thermal expansion than the polymer layer; and shaping the polymer layer using a laser ablation process. This method uses a substrate with low thermal expansion to limit the expansion of the attached polymer layer when it is being shaped by a laser ablation process. In addition there is provided a lens structure for an *autostereoscopic display device comprising a substantially planar glass substrate and a polymer layer defining a lenticular arrangement provided over the glass substrate.

Lens structure and manufacturing method, and the manufacture of shaped polymer articles

The invention relates to a method of breaking a substrate of a brittle material, the method comprising the steps of providing a substrate () of a brittle material, heating the substrate with a laser beam () to create a heated spot on the substrate, moving the laser beam and the substrate with respect to each other to create a line of heated spots on the substrate (), cooling the heated spots on the substrate by locally applying a cooling medium () behind the heated spots such that a micro-crack is propagated in the line of heated spots, and breaking the substrate along the line of the propagated micro-cracks by applying a mechanical force on the substrate wherein, the cooling medium comprises an aqueous surfactant solution. The surfactants will connect to the broken siloxane bonds inside the surface cracks. Then recombination and healing of the broken siloxane bonds will not occur and the required breaking load will remain constant over time.

Method of breaking a brittle substrate

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Eindhoven, Netherlands

Raymond Gijsbertus Anthonius Van Agthoven