Ferroelectric liquid crystal display and method of manufacturing the same

• US 20020149727A1
• Filed: 12/18/2001
• Published: 10/17/2002
• Est. Priority Date: 04/11/2001
• Status: Abandoned Application

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Wang, Jong-min
• Application Number:
  US10/020,174
• Publication Number:
  US 20020149727A1
• Time in Patent Office: Days
• US Class Current: 349/123
• CPC Class Codes: G02F 1/1337 Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
• CPC Class Codes: G02F 1/141 using ferroelectric liquid crystals

Abstract

A ferroelectric liquid crystal display including an upper base plate and a lower base plate which are disposed apart from each other at a predetermined distance, electrode layers respectively formed on the upper base plate and the lower base plate facing each other, orientation layers respectively formed on the electrode layers and treated by rubbing in a first rubbing direction and a second rubbing direction which intersect at a predetermined angle, and a liquid crystal layer disposed between the orientation layers and filled with a ferroelectric liquid crystal having a bookshelf structure. Due to the ferroelectric liquid crystal display and the method of manufacturing the same, the ferroelectric liquid crystal of the bookshelf structure can stably twist by the treatment of the orientation such that an afterimage phenomenon is prevented and further a low threshold voltage and a bistability can be obtained.

Claims

1. A ferroelectric liquid crystal display comprising:

an upper base plate and a lower base plate which are disposed apart from each other at a predetermined distance;

electrode layers respectively formed on the upper base plate and the lower base plate facing each other;

orientation layers respectively formed on the electrode layers; and

a liquid crystal layer disposed between the orientation layers and filled with a ferroelectric liquid crystal,

wherein the liquid crystal layer is formed of the ferroelectric liquid crystal having a bookshelf structure and the respective orientation layers are treated by rubbing in a first rubbing direction and a second rubbing direction which intersect at a predetermined angle.

2. The ferroelectric liquid crystal display of claim 1, wherein the second rubbing direction intersects with the first rubbing direction at an angle of 45°

.

3. A method of manufacturing the ferroelectric liquid crystal display, the method comprising:

forming a lower structure and a upper structure respectively in which base plates, electrode layers, and orientation layers are sequentially formed therein;

treating the orientation layers by rubbing in a first rubbing direction;

treating the orientation layers by rubbing in a seconding rubbing direction which intersects with the first rubbing direction at a predetermined angle;

forming a cell for injecting a ferroelectric liquid crystal on one of the lower structure and the upper structure treated by the rubbing;

connecting the lower structure with the upper structure; and

injecting the ferroelectric liquid crystal having a bookshelf structure into the cell between the lower structure and the upper structure and then sealing an injecting port.