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TAP TIMES       -46-                                 MARCH 2022


          Ukraine situation may impact                          Neon gas is indispensable in this mixture

            semiconductor neon supply                           and, thus, difficult to replace.


        TAIPEI, Taiwan — Ukraine is a major                     DUV requires neon gas
        supplier of raw material gases for                      The semiconductor lithography process
        semiconductors including neon, ar-                      that requires neon gas is primarily DUV
        gon, krypton, and xenon, according                      ex posure, and encompasses 8-inch wafer
        to TrendForce’s investigations.                         180nm to 12-inch wafer 1Xnm nodes.


        70% of neon gas capacity
        That country, in fact, supplies nearly
        70% of the world’s neon gas capacity.
        Although the proportion of neon gas used
        in semiconductor processes is not as high
        as in other industries, it is still a neces-
        sary resource.


        If the supply of materials is cut off, there
        will be an impact on the industry. Trend-               This  is  Kiev,  Ukraine’s  capitol  city.    The  Russian  situation  may
        Force believes that, although the Ukraini-              impact the supply of neon gas, at least on the long term.
        an-Russian conflict may affect the supply
        of inert gas regionally, semiconductor                  TrendForce  research  shows  global  found-
        factories and gas suppliers are stocked                 ry  production  capacity  at  the  180~1Xnm
        and there are still supplies from other                 nodes accounts for approximately 75% of
        regions.                                                total capacity. This excludes Samsung and
                                                                TSMC that provide advanced EUV process-
        Higher prices                                           es.
        Thus, gas production line interruptions in
        Ukraine will not halt semiconductor pro-                For  most  fabs,  the  proportion  of  revenue
        duction lines in the short term. However,               attributed to the 180~1Xnm nodes exceeds
        the reduction in gas supply will likely lead            90%.
        to higher prices which may increase the
        cost of wafer production.                               In addition, the manufacturing processes of
                                                                components in extreme short supply since
                                                                2020, including PMIC, Wi-Fi, RFIC, and MCU
        Inert gases are primarily used in semi-
        conductor lithography processes. When                   all fall within the 180~1Xnm node range.
        the circuit feature size is reduced to be-
        low 220nm, it begins to enter the territo-              DRAMs may also be affected
        ry of DUV (deep ultraviolet) light source               For  DRAMs,  in  addition  to  Micron,  Korean
        excimer lasers.                                         manufacturers are gradually increasing the
                                                                proportion of 1alpha nm nodes (using the
        The wavelength of the DUV light generat-                EUV process); more than 90% of produc-
        ed by the energy beam advances circuit                  tion capacity still employs the DUV process.
        feature sizes to below 180nm.                           In addition, all NAND Flash capacity utilizes
                                                                DUV lithography technology.
                                                                                                trendforce.com
        The inert gas mixture required in the
        DUV excimer laser contains neon gas.                       Reach more markets with TAP TIMES!
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