Patent · US Expired

Liquid crystal display device and its driving method

US6525707B1 · kind B1 · utility

126Cited by
12References
20Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJul 26, 1999
Grant dateFeb 25, 2003
Priority date
Expiry dateJul 26, 2019

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG02F1/13471
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

A liquid crystal display device capable of displaying in multiple colors, and a method for driving the liquid crystal display device using a typical monochrome liquid crystal driving IC. A display portion of a birefringence color liquid crystal display device has a usual letter display portion (41) for displaying letters in a single color and a mark display portion (42) for displaying a variety of colors. A liquid crystal cell is driven by supplying scanning signals to scanning electrodes for the letter display portion (41) and data signals to scanning electrodes for the mark display portion (42).

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