Mitsubishi Electric Corporation

Nec Corporation

Tomoya Hirata

Kaoru Motonami

Atsushi Narazaki

Kenji Yoshikawa

Kazunari Nakata

Shigeto Honda

Takafumi Oka

Tae Miyahara

Ryoichi Fujii

Kyohei Yamakawa

Ayumu Onoyama

Ryota Iriki

The static charge eliminator includes a charger including one or more charging units, and a grounded needle-shaped conductor. The charger is configured to charge an insulating film such that the absolute value of the surface potential of the insulating film is 3 kV or more. The needle-shaped conductor is arranged to generate a corona discharge between the needle-shaped conductor and the insulating film charged by the charger. Thereby, the static charges on the insulating film can be reliably eliminated.

Static charge eliminator and static charge elimination method

A passivation film having a predetermined width from an outer peripheral end portion toward an inner side and extending along the outer peripheral end portion is formed on a front surface of a semiconductor substrate. An outer peripheral end surface orthogonal to the front surface and a rear surface is formed by grinding the outer peripheral end portion of the semiconductor substrate. A thickness of the semiconductor substrate is reduced to a predetermined thickness by grinding the rear surface. The ground rear surface is etched by discharging a mixed acid onto the rear surface while rotating the semiconductor substrate with the rear surface facing upward, to remove a fracture layer. Thereby, chipping or cracking of the semiconductor substrate is suppressed.

Method of manufacturing semiconductor device

In order to use an auxiliary wiring formed on one of opposing substrates as a bypass line of one of circuit lines arranged in matrix on the same substrate, which has a broken portion, cross points (A and B) of the auxiliary wiring and the broken circuit line are electrically connected by removing an insulating film between the auxiliary wiring and the circuit line by irradiating these cross points with a laser beam. An electrostatic protective element is provided in each of cross points of the auxiliary wiring and the circuit lines and the auxiliary wiring is connected to a common terminal connected to an opposing electrode formed on the other opposing substrate such that the potential of the auxiliary wiring can be removed.

Liquid crystal display device and method for repairing breakage of circuit lines thereof

Growing community of inventors

Tokyo, Japan

Tomoya Hirata