Patent ID: 9598311
Date: 2017-03-21
CPC Classifications: C03C,C09D,E06B,Y10T

Claim:
1. A heat treated coated glass pane comprising at least the following sequence of layers: a glass substrate; a base layer located directly on the glass substrate and based on an (oxi)nitride of silicon and/or an (oxi)nitride of aluminium; a lower anti-reflection layer, the lower anti-reflection layer comprising in sequence from the base layer: a silver-based functional layer; and further comprising a barrier layer located in sequence from the glass substrate over and in contact with the silver based functional layer; and wherein the barrier layer does not comprise a substoichiometric NiCrO further comprising an upper anti-reflection layer in sequence over the barrier layer; and wherein the upper anti-reflection layer comprises: wherein the change in percentage light transmittance of the glass pane after heat treatment is less than or equal to 2.