[FPDI] Japan Display Showcases 4.38-inch 503ppi full-HD LCD Panel

Nov 5, 2012
Shinya Saeki, Nikkei Electronics
The prototyped 4.38-inch full-HD panel
The prototyped 4.38-inch full-HD panel
[Click to enlarge image]
The 5-inch full-HD panel that Japan Display has just started to mass-produce
The 5-inch full-HD panel that Japan Display has just started to mass-produce
[Click to enlarge image]
The 2.3-inch 651ppi panel
The 2.3-inch 651ppi panel
[Click to enlarge image]

Japan Display Inc exhibited a 4.38-inch 1,920 x 1,080-pixel (full-HD) LCD panel at FPD International 2012.

The resolution of the panel is 503ppi, which is higher than that of the 5-inch full-HD panel that the company has just started to mass-produce (443ppi) (See related article).

Japan Display realized the high resolution of the 4.38-inch panel by using low-temperature polycrystalline silicon (Si) TFTs as driver elements. The new panel can display more refined video than existing LCD panels, the company said. Japan Display has not yet decided when to mass-produce the panel because the aperture ratio of the panel is lower than those of existing LCD panels.

The maximum brightness of the panel is 700cd/m2. Two of red, green, blue and white sub-pixels were arranged in each of the longitudinal and transverse directions. Japan Display reduced the power consumption of the panel by 50% by adding the white pixel. But it did not reveal the power consumption of the panel.

In addition to the 4.38-inch panel, Japan Display showed a 2.3-inch 1,280 x 800-pixel LCD panel with a resolution of 651ppi. It was unveiled at SID 2012, which took place in June 2012 in Boston, the US (See related article).