Complex sentence: In 2005, the joint venture was dissolved and TCL acquired Alcatel-Lucent's 45 percent share, and Alcatel Mobile Phones became a wholly owned subsidiary group of TCL.
Split into simpler sentences: In 2005, the joint venture was dissolved and TCL acquired Alcatel-Lucent's 45 percent share. Since then, Alcatel became a wholly owned subsidiary group of TCL.