A 513-ppi FFS-mode LCD using technique for changing part of active layer of oxide semiconductor to transparent electrode

Abstract

We have established a technique for changing part of an active layer of an oxide semiconductor (OS) to a transparent electrode in order to achieve an aperture ratio of 50% or higher and a bezel width of 1 mm in an fringe field switching (FFS) mode LCD panel with a high resolution of 513 ppi. Furthermore, we have prototyped an LCD panel by examining a driving mode that enables low-frequency driving.

Line‐time optimization technology for ultra‐large and high‐resolution liquid crystal displays

“…Moreover, 8 k × 4 k LCD TVs have been demonstrated by some display companies . Several studies have reported on the technical aspects of realization of 8 k × 4 k LCD TVs in recent years . One of the most important technical issues pertaining to these LCD TVs, as reported in such studies, is the line delay that is also called a resistor–capacitor (RC) delay because of the heavy load on electrical lines.…”

“…[1][2][3][4][5][6] Several studies have reported on the technical aspects of realization of 8 k × 4 k LCD TVs in recent years. [7][8][9][10] One of the most important technical issues pertaining to these LCD TVs, as reported in such studies, is the line delay that is also called a resistor-capacitor (RC) delay because of the heavy load on electrical lines. Both resolution and screen size of LCDs have increased continually over the years to meet consumer demands.…”

Highly reliable mobile liquid crystal display using AlO x deposited by atomic layer deposition for side sealing structure

“…In recent years, the demand for narrower bezels in mobile devices such as smartphones has been accelerating, and products with a bezel width of 1 mm or less are now available in the marketplace. We have prototyped displays with narrow bezels …”

“…We have prototyped displays with narrow bezels. 1 Narrow bezels cause the sealant width to be smaller than before and allow the entry of external moisture, etc., into displays, leading to reliability degradation.…”