SEOUL, South Korea (AFP) — Samsung Electronics co-CEO Han Jong-hee, credited with boosting the South Korean tech giant's television business on the global stage, died of a heart attack Tuesday aged 63, the company told Agence France-Presse.

"He died from cardiac arrest today," a Samsung spokesperson said, adding that Han was survived by his wife and three children.

Han joined Samsung in 1988 and was seen as having played a key role in getting its high-end TV sets noticed worldwide.

"Han was central in the unveiling of Samsung's world-class LED TVs," the firm said in a company biography published earlier this month.

"His numerous other innovations enabled the company to continually demonstrate its technology leadership," it added.

Han was credited by the company with taking Samsung televisions "to the pinnacle of the global market" — and keeping them there.

Samsung Electronics is the flagship subsidiary of South Korean giant Samsung group, by far the largest of the family-controlled conglomerates that dominate Asia's fourth-largest economy.