** Shares of Toptec Co Ltd 108230.KQ tumble as much as
13.7 pct
** South Korean prosecutors on Thursday charged the chief
executive and eight employees of the company for selling
information earlier this year about Samsung's organic
light-emitting diode (OLED) panels urn:newsml:reuters.com:*:nL4N1Y43DL
** Toptec, which produces automated equipment to make mobile
phone display panels, denied any wrongdoing on Thursday
** Samsung Electronics 005930.KS rises up to 1.9 pct
** Broader market .KS11 up 0.3 pct, as of 0039 GMT
((joori.roh.thomsonreuters.com@reuters.net))