US 2003/0164919 A1 · Displaying substrate and liquid crystal display device having the same

Abstract

Disclosed are a displaying substrate and a liquid crystal display device having the same. A pad portion formed on the displaying substrate has a plurality of via holes for exposing a pad metal layer. A width of the via hole is smaller than a diameter of a conductive particle. Where the width of the via hole is larger than the diameter of the conductive particle, a depth of the via hole is smaller than the diameter of the conductive particle. Thus, a driving failure which may occur in the pad portion is prevented while maintaining a deformation ratio of the conductive particle at about 20˜60%, thereby enhancing a connecting force between the pad portion and a circuit substrate.

Claims15

Dependent claims

A displaying substrate comprising at least one pad portion for receiving an electrical signal from a circuit substrate, said pad portion comprising:

a pad metal layer formed on said displaying substrate and having a pad area;
a passivation layer for covering said pad metal layer, said passivation layer having a plurality of via holes to partially expose said pad area;
and
a conductive layer, formed over said passivation layer corresponding to said pad area, said conductive layer being electrically connected to said pad metal layer through said via holes.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

10/159,149Filed 30 May 2002

Priority

KR 2001-6481219 Oct 2001

Published

4 Sep 2003

Term ends

Not estimatedThe source records don’t support an estimate.

Classification11 codes

G02F 1/13458
Conductors connecting electrodes to cell terminals: terminal pads
G02F 1/13452
Conductors connecting electrodes to cell terminals: conductors connecting driver circuitry and terminals of panels
H05K 1/113
Directly combined with via connections: via provided in pad; Pad over filled via
H05K 3/361
Assembling printed circuits with other printed circuits: assembling flexible printed circuits with other printed circuits

Displaying substrate and liquid crystal display device having the same

Life of this patent

Displaying substrate and liquid crystal display device having the same

Life of this patent

Abstract

Claims15