Producing method for substrate, producing apparatus for substrate, producing method for image display apparatus and image display apparatus

An image display apparatus including an container comprising:

• a rear plate having an electron beam source;
• and
• a face plate having a phosphor which emits a light by an electron beam irradiation and an anode electrode for applying an electron accelerating voltage;
• wherein the image display apparatus further comprises, in the container, conductive particles, a mechanism for maintaining the conductive particles within the container but outside a normal projection region from the anode electrode onto the rear plate, a mechanism for moving the conductive particles into the normal projection region, and a mechanism for causing the conductive particles to execute a reciprocating motion within the normal projection region.

A producing method for a substrate having a conductor on a surface thereof, the method comprising:

• a step of placing a conductive member in an opposed relationship, across a space, to the conductor-including surface of the substrate and applying a voltage between the conductor and the conductive member;
• and
• a step of introducing conductive particles into the space between the conductor and the conductive member under the voltage application;
• wherein the voltage applied between the conductor and the conductive member causes the introduced conductive particles to execute a reciprocating motion between the substrate and the conductive member and to collide with dust attached to the substrate, thereby removing the dust from the substrate.

A cleaning apparatus comprising:

• means which positions a substrate having a conductor on a surface thereof;
• means which places a conductive member in an opposed relationship, across a space, to the conductor-including surface of the substrate;
• means which provides the conductor with a first potential and the conductive member with a second potential different from the first potential, thereby generating an electric field between the conductor and the conductive member;
• means which introduces conductive particles between the conductor and the conductive member with thus provided potentials;
• and
• means which causes the introduced conductive particles to execute a reciprocating motion between the substrate and the conductive member.