Home | Links | Contact Us | More About Intellectual Property | Bookmark

Search patents:

Home

LCD

Liquid-crystal-apparatus-having-light-quantity-of-the-backlight-in-synchronism-with-writing-signals

Gain reflector-liquid crystal display

As may be seen hereinafter, the display disclosed herein is one which comprises a display medium ...

Reflective-type liquid crystal display device with etched oxide layer between substrate and metal film and method for producing same

The reflective-type liquid crystal display panel of this invention, which overcomes the above-...

Optical recording/reproducing head access controlling apparatus for an optical type information recording/reproducing apparatus

The object of the present invention is to provide an optical head access controlling apparatus ...

Light modulating apparatus

The primary ofject of the present invention is to provide a light modulating apparatus which is ...

Electronic watthour meter

What is claimed is: 1. Apparatus, comprising: metering means for measuring energy consumed by an ...

Digital video window control

In accordance with the present invention, I provide a digital processor unit for connection between ...

Optical modulation element having two-dimensional phase type diffraction grating

It is an object of the present invention to provide an optical modulation element utilizing a ...

Method of operating a liquid crystal light valve

It is an object of the present invention to provide a method of operating a liquid crystal light ...

Exposure display device for a single lens reflex camera

In accordance with principles of this invention, an exposure display device for a single lens ...

Exposure and flash fire control system

What is claimed is: 1. A photographic camera for use with a variable output source of artificial ...

Liquid crystal apparatus having light quantity of the backlight in synchronism with writing signals

Details

Inventors: Okada, Shinjiro; Takahashi, Tohru; Kawagishi, Hideyuki; Inaba, Yutaka; Taniguchi, Osamu;
Assignee: Canon Kabushiki Kaisha (JP)
Primary Examiner: Miller; Stanley D.
Assistant Examiner: Duong; Tai V.
Attorney, Agent or Firm: Fitzpatrick, Cella Harper & Scinto

A liquid crystal apparatus, comprising a liquid crystal panel comprising a plurality of scanning lines, and a plurality of picture elements disposed along each of the scanning lines and comprising a ferroelectric liquid crystal; a backlight disposed behind the liquid crystal panel for illuminating the liquid crystal panel, the backlight changing the light quantity emitted therefrom with the elapse of time. The liquid crystal apparatus is so driven that the low level of the light quantity of the backlight is synchronized with a time when a writing signal is applied to picture elements on at least one scanning line.

DETAILED DESCRIPTION An object of the present invention is to provide an liquid crystal apparatus and a driving method therefor without having flickering on the display face.
Thus, the present invention provides a liquid crystal apparatus, comprising: a liquid crystal panel comprising a plurality of scanning lines, and a plurality of picture elements disposed along each of the scanning lines and comprising a ferroelectric liquid crystal; a backlight disposed behind the liquid crystal panel for illuminating the liquid crystal panel, said backlight changing the light quantity emitted therefrom with the elapse of time; and means for synchronizing the low level of the light quantity of the backlight with a time when a writing signal is applied to picture elements on at least one scanning line.
Various embodiments of apparatus and method relating to the above objects are also provided.
These and other objects, features and advantages of the present invention will become more apparent upon a consideration of the following description of the preferred embodiments of the present invention taken in conjunction with the accompanying drawings.

Related patents

	Fluorescent backlight flicker control in an LCD display OF THE INVENTION The invention relates to a circuit for controlling the frequency of the fluorescent backlight used in a dual layer supertwist LCD, such as described in ...
	Light adjusting sheet for a planar lighting device and a planar lighting device and a liquid crystal display using the sheet Accordingly, it is an object of the present invention to provide a light adjusting sheet for a planar lighting device in which the emanated light distribution can be ...
	Thermo-optique smectic liquid-crystal storage display What we claim is: 1. A method utilizing a thermo-optical effect for storing images in the form of light scattering points in a thin layer of a material exhibiting a ...
	Liquid crystal display cell, process for its production and cell plate An object of this invention is to provide an LC-display cell of the afore-mentioned type in which the reflector layer adheres solidly to the cell plate, is sufficiently ...
	Device for eliminating ringing in filtered ECG signals We claim as our invention: 1. A device for eliminating filter-produced ringing in filtered ECG signals comprising: an analog-to-digital converter to which analog ECG ...
	Process for the preparation of a container closed under sterile conditions and containing lyophilized material We claim: 1. In a process for preparing and packaging a lyophilized material by the steps of filling a container with the material to be lyophilized, loosely closing ...
	Mount for imaging lens array on optical print head In accordance with the present invention, apparatus is provided for mounting an imaging lens array formed of a plurality of gradient index optical fibers onto a print ...
	Single lens, multi-beam system and method for high resolution recording of information on a moving recording medium and article AND OBJECTS Accordingly, it is a general object of the present invention to provide an improved wideband recording system and method for recording information on a ...
	Device for processing optical data with improved optical allignment means The main object of the present invention is to provide a device for processing optical data which is compact and lightweight and does not require a complicated procedure ...
	Liquid crystal display cell having a diffusely-reflective counter electrode OF THE INVENTION In the embodiment shown by way of example only in FIGS. 1 and 2, the display cell of the invention is given the reference numeral 1. This cell 1 has a ...

0.004
Archive: All patents - Links Copyright (c)2006 Eipa-patents.org - All rights reserved