Insulating glazing unit comprising a curved pane

An insulating glazing unit comprising:

• at least one curved rigid pane;
• another rigid pane to be mutually pressed together with the at least one curved rigid pane;
• a spacer frame for joining the curved rigid pane and the other rigid pane together by an impermeable adhesive, creating a space between the panes when the curved pane and the other rigid pane are mutually pressed together, which spacer frame has a variable height over its length, looking toward the curvature of the pane, in a curvature region of the curved rigid pane, such that the space between the panes has a portion with a smaller height and portion with a larger height in the curvature region,
• wherein the spacer frame includes plural segments, wherein the segments of the spacer frame corresponding to the curvature region have a uniform height in the entirety of said curvature region that is larger than the height of the segments of the spacer frame not located in the curvature region,
• wherein, upon pressing together the at least one curved rigid pane and the another rigid pane, the spacer frame comprises, in said curvature region, an elastomer material which is plastically deformed to provide at least one local overthickness as viewed in the direction of the height of the space between the panes.