US 6,160,349 A · Display device

Abstract

A panel (10) and a drive circuit substrate (12) are disposed within a conductive shielding case (20). Between the panel (10) and the drive circuit substrate (12), a conductive holding board (16) or separately provided conductive material is provided, and connected to the conductive shielding case (20) by a connecting means (22) so as to surround the drive circuit substrate (12) to be the source of noise. This forms an electromagnetic shield for the drive circuit (12). Further, a conductive layer is formed on an upper part of an insulating film of a wiring board (25) which connects the panel (10) and the drive circuit substrate (12). The conductive layer may be connected to, for example, the conductive shielding case (20) and the holding board (16) to be forced to have a ground potential. This provides an electromagnetic shield to the wiring board (25) as well as preventing emission of noise from a gap between the panel (10) and the conductive shielding case (20).

Claims16

Dependent claims

A display device having a display panel with a plurality of pixels formed between a pair of substrates and giving a desired display by controlling each of said pixels, said display device comprising:

a conductive shielding case with said display panel and a drive circuit for driving said display panel disposes therein, said conductive shielding case having an opening at the side of said display panel;
a conductive member disposed between said drive circuit and said display panel,
wherein said drive circuit is disposed at a non-display surface of said display panel formed within said conductive shielding case;
said conductive member and said conductive shielding case are connected to provide an electromagnetic shield to said drive circuit;
a conductive portion having a ground potential;
and
a signal wire electrically connecting said drive circuit and said display panel;
wherein said conductive portion and said signal wire form a static capacitance that drains at least a portion of a high-frequency noise from said drive circuit.

5 more elements

Dependencies are inferred from the claim text.

Display device

Life of this patent

Display device

Life of this patent

Abstract

Claims16