Patent · US Expired

Transflective liquid crystal display with partial switching

US7015997B2 · kind B2 · utility

21Cited by
11References
5Claims
0Family size

Assignees

Inventors

Key dates

Filing dateApr 29, 2003
Grant dateMar 21, 2006
Priority date—
Expiry dateJun 23, 2023

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG02F2201/128
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

A high reflection and transmission transflective liquid crystal display (TLCD) that requires only a single cell gap. Instead of reducing the cell gap of the R sub-pixel region, the invention reduces the birefringence change Δn of reflective pixels (R) so that the total retardation change Δnd of R is equal to that of the transmissive pixels (T). This is realized by a partial switching of the pixels of approximately 45 degrees which occurs in the reflective pixel (R) region of the single cell gap by applying fringing fields, generated by a discontinuous electrode, to the molecules in the reflective pixel (R) region of the cell gap.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.