SEMI Font, also known as SEMI OCR

font In metal typesetting, a font is a particular size, weight and style of a ''typeface'', defined as the set of fonts that share an overall design. For instance, the typeface Bauer Bodoni (shown in the figure) includes fonts " Roman" (or "regul ...

, is used for marking

silicon Silicon is a chemical element; it has symbol Si and atomic number 14. It is a hard, brittle crystalline solid with a blue-grey metallic lustre, and is a tetravalent metalloid (sometimes considered a non-metal) and semiconductor. It is a membe ...

wafers in the semi-conductor industry. The SEMI font

character set Character encoding is the process of assigning numbers to graphical characters, especially the written characters of human language, allowing them to be stored, transmitted, and transformed using computers. The numerical values that make up a c ...

include 26 uppercase letters, 10 numbers, dash and period. Their shapes and dimensions are specified by SEMI M12/M13 standard, which was approved by Global Traceability Committee and North American Traceability Committee. When used in “single-density” mode, laser scribers use a dot matrix of 5 dots horizontal and 9 dots vertical, in “double-density” mode, the matrix is 10 dots horizontal and 18 dots vertical.

References

semi.orgbarcodesoft.com
Semiconductor technology Typefaces OCR typefaces