Organic light-emitting diode display with glass encapsulation and peripheral welded plastic seal

摘要

A display may have thin-film transistor circuitry that includes organic light-emitting diodes. The thin-film transistor circuitry may be formed on a substrate. First and second thin-film inorganic moisture barrier layers may be deposited on top of the thin-film transistor circuitry. An organic planarization layer may be interposed between the first and second thin-film inorganic moisture barrier layers. A moisture barrier glass layer may be attached to the second thin-film inorganic moisture barrier layer with a layer of liquid adhesive. The display may have functional layers such as a touch sensor and circular polarizer that are interposed between a cover glass layer and the moisture-barrier glass layer. A thermoplastic polymer moisture barrier ring that runs around the peripheral edge of the display may be laser welded between the moisture barrier glass layer and the substrate.

主权项

1. A display having a peripheral edge, comprising:
first and second display layers; thin-film transistor circuitry between the first and second display layers, wherein thin-film transistor circuitry comprises light-emitting diodes; a moisture-barrier ring of thermoplastic polymer that is attached between the first and second display layers to prevent moisture from reaching the thin-film transistor circuitry, wherein the first display layer comprises a substrate layer on which the thin-film transistor circuitry is formed; and a polarizer, wherein the second display layer is interposed between the polarizer and the first display layer, and wherein the moisture-barrier ring extends between the substrate layer and the second display layer to seal the peripheral edge of the display.