Ninety percent of TCP International Holdings Ltd. shareholders voted to approve the merger with Quality Light Source GmbH, an entity affiliated with brothers Ellis and Solomon Yan, who once led TCP. The transaction is expected to close Q1 of this year. TCP shareholders will get a $1 bump per share. The deal ends a yearslong drama that included the Yans’ ouster from the TCP board, claims of unfair competition and the eventual hostile takeover that put the brothers back on top of their former company.