How it started
History
ST-Ericsson was formed on 3 February 2009 when STMicroelectronics and Ericsson completed the merger of Ericsson Mobile Platforms and ST-NXP Wireless into a 50/50 joint venture.
On 20 August 2008, STMicroelectronics and Ericsson announced their interest to merge their wireless semiconductor businesses. ST contributed its multimedia and connectivity products as well as its 2G/EDGE platform and 3G offering. Ericsson contributed its 3G and 3GPP Long Term Evolution (LTE) platform technology. The merger followed an existing strategic co-operation between Ericsson Mobile Platforms and ST-NXP Wireless.
Ericsson also had a venture with Sony called Sony Ericsson during 2001–2012.
On 11 December 2012, ST-Ericsson was on the brink of shutdown after its parent company STMicroelectronics decided to move out of the JV, citing loss of market share due to ST-Ericsson failing to attain Break-even. Since ST-Ericsson came into being in 2009, STMicroelectronics has slipped from 5 to 7 in global semiconductor firms' rakings.
On 18 March 2013, the parent companies announced that the joint venture was to be closed down, with the parent companies taking over parts, but not all, of its operation and products.
From Wikipedia’s article on ST-Ericsson, shared under CC BY-SA 4.0.2