| 摘要 |
PROBLEM TO BE SOLVED: To solve problems regarding kink level, stability of characteristic and reliability. SOLUTION: At least one window 11 lacking a metal electrode is formed in the metal electrode 9 formed on a stripe current injection region, crossing the stripe current injection region in the width direction. As a result, stress is reduced, and a leakage current is controlled, so that the kink level is improved, characteristic is stabilized and reliability is increased.
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