Japan Display Inc. reported a group net loss of ¥108.67 billion ($996 million) for the fiscal first half on Wednesday, up more than tenfold from a year earlier, due to massive restructuring costs that saw its negative net worth also surpass ¥100 billion.

The red ink for the six months ended Sept. 30 compared with a loss of ¥9.52 billion in the same period last year.

The display maker's negative net worth widened to ¥101.6 billion as of the end of September, compared with ¥77.2 billion three months earlier, and its capital adequacy ratio fell to minus 21.8 percent.