SEOUL (Reuters) - South Korea's LG Electronics Inc (>> LG Electronics Inc.) will supply Honda Motor Co Ltd (>> Honda Motor Co Ltd) and Porsche with in-car displays, a person with direct knowledge of the matter said on Friday, as the firm tries to grow its auto business to counter weak sales at its mainstay television and smartphone units.

LG Electronics has already started mass production of the centre information displays, which will be placed in the centre console, for Honda and will start doing the same for Porsche in the first half of 2016, the person told Reuters, without giving any details about the contracts.

Sister firm LG Display Co Ltd (>> LG Display Co Ltd) is supplying the liquid crystal display panels, added the source, who declined to be named as the matter remained confidential.

LG Electronics declined to comment.

The company's fledgling auto business, which involves various products including in-car displays and camera systems, accounted for 11.5 percent of overall sales in the April-June quarter.

LG Electronics, along with sister firms LG Display and electric car battery maker LG Chem Ltd (>> LG Chem Ltd), are making a concerted effort to grow their market share in the auto industry, as the vehicle components business offers longer-term, higher margins than consumer electronics, a business in which the firm is facing stiff competition.

LG Electronics is also working with BMW (>> Bayerische Motoren Werke AG), General Motors (>> General Motors Company) and Mercedes Benz (>> Daimler AG) for research and development of center information displays, the person said.

(Reporting by Se Young Lee; Editing by Richard Pullin and Miral Fahmy)