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AssigneeCommissariat A L'energie Atomique Et Aux Energies Alternatives
InventorsChristophe Prat, Tony Maindron
Estimating the term…
The invention relates to a method for making an electronic display device (1) having a screen (3) covered by a protection plate, and to a substrate (2) covered by said screen for obtaining such a device. The method comprises the following steps: a) applying glue (10) at the non cross-linked state substantially on the entire surface of the screen and/or the assembling surface (11a) of the plate (11) following a deposit on the screen connection area (5) of at least one organic layer (15) for protecting the connection area from the glue; applying the assembling surface against the screen via the glue; c) emitting a radiation through the plate for cross-linking the glue; and d) removing a portion of the plate covering the connection area so that the latter can be electrically accessible, the protection layer being removed from the connection area upon said removal or during a further surface processing step. According to the invention, the protection layer contains at least one organic compound selected from the group comprising compounds derived from diamines and organometallic complexes with heterocycles.
A method for fabricating an electronic display device comprising a substrate coated on at least one of its sides with a display, such as a microdisplay, which comprises an active zone formed from a matrix of pixels and an electrical connection zone, the display being fastened by means of an adhesive which is crosslinkable by electromagnetic radiation, with a protective sheet which is permeable to this radiation and has a face for assembly with the display, this method comprising the following steps:
A substrate for an electronic display device, this substrate being coated on at least one of its sides with a display, such as an OLED (organic light-emitting diode) microdisplay, which comprises an active zone formed from a matrix of pixels and an electrical connection zone, the display being intended to be fastened over substantially its entire surface via an adhesive which is crosslinkable by electromagnetic radiation, to a protective sheet which is permeable to this radiation and has an assembly face for assembly to the display, the connection zone being coated with at least one organic layer for protecting it from the adhesive, this layer being able to be removed directly from this connection zone by removing a portion of the protective sheet bonded to this zone or else by dissolution following this removal, in order to make this zone electrically accessible, characterized in that said protective layer is based on at least one organic compound chosen from the group consisting of diamine-derived compounds and heterocyclic organometallic complexes, this organic compound being used in the composition of the or each display and this protective layer preferably having a sufficiently low adhesion to the connection zone and a thickness of between 5 nm and 100 nm.
Dependencies are inferred from the claim text.