Method of manufacturing a semiconductor device having a monitor pattern, and a semiconductor device manufactured thereby
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsYuichi Sakai, Hiroyuki Chibahara, Masanobu Iwasaki, Kakutaro Suda
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Abstract
The semiconductor device includes a semiconductor wafer which is partitioned into chip regions by scribe line area. A device pattern is formed in the device forming region included in the chip region. A monitor pattern is formed from the same material as that of the device patterns in the chip region simultaneously with the device pattern. An interlayer insulating film is formed in the chip region so as to cover the device pattern and the monitor pattern. The monitor pattern is used to measure the thickness of the interlayer insulating film.
Claims7
A method of manufacturing a semiconductor device comprising the steps of:
- partitioning a semiconductor wafer into a plurality of chip regions by a scribe line area;
- defining at least one device formation region in said chip region;
- forming a device pattern in said device formation region;
- forming a monitor pattern simultaneously with said device pattern in said chip region;
- and
- forming an interlayer insulating film on said semiconductor wafer so as to cover said device pattern and said monitor pattern.
An arrangement for measuring surface planarity of a semiconductor device, the arrangement comprising:
- a semiconductor wafer partitioned into a plurality of chip regions by a scribe line area;
- at least one device formation region formed in said plurality of chip regions;
- a device pattern formed in said at least one device formation region;
- a monitor pattern having planar dimensions of at least 5 μm formed simultaneously with said device pattern in said plurality of chip regions;
- an interlayer insulating film formed on said semiconductor wafer so as to cover said device pattern and said monitor pattern;
- and
- an optical film thickness measuring device for measuring the thickness of said interlayer insulating film at locations corresponding to the position of said monitor patterns;
- wherein the planarity of the surface of said semiconductor device is determinable based on variations in the measured film thickness of said interlayer insulating film.
Dependencies are inferred from the claim text.