Browse Prior Art Database

Safe Discharge Circuit for Liquid Crystal Display

IP.com Disclosure Number: IPCOM000123920D
Original Publication Date: 1999-Jul-01
Included in the Prior Art Database: 2005-Apr-05
Document File: 2 page(s) / 31K

Publishing Venue

IBM

Related People

Takasugi, S: AUTHOR

Abstract

Disclosed is a structure that prevents ESD (electrostatic discharge) from damaging products in the LCD (liquid crystal display) manufacturing process.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 100% of the total text.

Safe Discharge Circuit for Liquid Crystal Display

   Disclosed is a structure that prevents ESD (electrostatic
discharge) from damaging products in the LCD (liquid crystal
display) manufacturing process.

   Figure 1 shows the structure, which can safely release
ESD.  When a conductor surrounded by an insulater such as a pixel
driving line has charge, the conductor will have the same voltage
inside of it, and the electric field around it is the strongest
around its sharp point.  All the sharp points being directed
outward, the charge is likelier to be released outward.  In
addition, having a larger area, the outer pattern has a larger
capacitance and it will be less affected by the charged conductor,
which results in a larger voltage difference with the charged one.
Since the charge will be released at the gap that has the strongest
electric field, it will be released outward from a sharp point to a
bigger pattern, which doesn't affect a product inside.

Grounding the outermost pattern is more effective.