TOKYO — Brandname Japanese technology companies, including Nintendo, reported dismal earnings Thursday with Sharp emerging an exception in doubling profits on brisk sales of flat-panel TVs in China, Japan and the U.S.

Nintendo’s first-half profit plunged as sales of its blockbuster Wii home console lost momentum in a saturated market. The maker of Super Mario and Pokemon games now expects annual earnings to fall for the first time in six years.