The Nikkei business daily, which reported the news earlier, said the Japanese electronics and entertainment giant was aiming to reach an agreement by the end of this year to sell its nearly 50 percent stake in liquid-crystal display joint venture S-LCD to Samsung.
Sony needs to step up outsourcing to reduce procurement costs and cope with rapidly declining prices of LCD panels due to a global oversupply.
Industry sources told Reuters in Tokyo that Sony hoped to dissolve the joint venture quickly, but that it had yet to agree terms or timing with Samsung.
Spokesmen for both Sony and Samsung Electronics declined to comment.
South Korean newspaper Chosun Ilbo had a similar report on the joint venture breakup in July, which Sony denied.
A well-informed industry source told Reuters in Seoul that such reports seem to be "distorted" because Sony has been negotiating with Samsung over its return on investment in the joint venture, rather than shareholdings.
"Under the contract on the LCD joint venture, the two parties are allowed to discuss such matters, which outsiders could misunderstand as a step for Sony to withdraw from the joint venture," said the source, who spoke on condition of anonymity.
Sony is under pressure to show it can reduce its exposure to the loss-making TV unit and concentrate on developing its strategy for smartphones.
Last week, it announced it will take control of its mobile phone joint venture with Ericsson as it seeks to exploit its music and video applications to help it catch smartphone leaders such as Apple Inc.
Sony reports July-September results on Wednesday. Analysts are forecasting Sony will fall short of its operating profit outlook of 200 billion yen ($2.63 billion) for the year to March 2012, with consumer confidence wobbling in Europe and the United States and as the strong yen bites into profits.
Sony has already sold off TV factories in Spain, Slovakia and Mexico in the past few years and outsources more than half of production to companies including Hon Hai Precision Industry. It retains four TV plants of its own in Japan, Brazil, China and Malaysia.
($1 = 75.760 Japanese yen)
(Additional reporting by Rie Ishiguro and Isabel Reynolds in TOKYO and Sung-Won Shim in SEOUL; Editing by Ron Popeski)