Aug 13 (Reuters) - Lam Research (LRCX.O), opens new tab said on Thursday it intends to invest more than $3 billion in the next ​five years to expand its global research ‌and development lab network, as it seeks to increase experiment capacity and speed up product development.The U.S. chip ​equipment maker said the multi-site expansion is ​expected to increase its experiment capacity by over ⁠50%. Sign up here.Here are some details:AI-focused spending by major technology ​companies has fueled de...