Hitachi, Ltd.

Hitachi Vlsi Engineering Corp.

Other

Hitachi Displays, Ltd.

Hitachi Power Semiconductor Device, Ltd.

Hitachi Consumer Electronics Co., Ltd.

Hitachi Ulsi Engineering Corp.

Hiatchi, Ltd.

Masakazu Sagawa

Toshiaki Kusunoki

Mutsumi Suzuki

Jun Sugiura

Isamu Asano

Mitsuaki Horiuchi

Hidetsugu Ogishi

Fumio Ootsuka

Hideo Aoki

Tsuyoshi Tamaru

Yoshinao Kawasaki

Nobuo Owada

Osamu Tsuchiya

Toru Kaga

Kazuyoshi Torii

Hiromichi Enami

Osamu Kasahara

Makoto Ogasawara

Keisuke Funatsu

Masatoshi Tsuneoka

Takayoshi Kogano

Seiichirou Shirai

Atsushi Wakahara

Hiroyuki Akimori

Sinichi Suzuki

Ken Tsugane

Nobuhiro Otsuka

Yoshihiro Ikeda

Tomotsugu Shimmyo

Tunehiko Tubone

Yoshitaka Tadaki

Atsushi Hiraiwa

Shinji Shimizu

Toshihiro Sekiguchi

Jun Murata

Hiroko Kaneko

Masami Ozawa

Nobuaki Kabuto

Makoto Okai

Akitoshi Ishizaka

Yoshiyuki Kaneko

Yoshiro Mikami

Tetsu Ohishi

Norihiro Uemura

Yoshie Kodera

Motoyuki Miyata

Shunichiro Nobuki

Hiroshi Kikuchi

Keizo Suzuki

Tomoki Nakamura

Hiroshi Miki

Kazutaka Tsuji

Toshiaki Morita

Takao Miwa

Toshimitsu Watanabe

Yuki Mori

Hisao Yokokura

Yuichi Sawai

Takahiro Morikawa

Takuo Tamura

Shirun Ho

Hideto Momose

Shin Imamura

Kumiko Konishi

Akinori Maeda

Kan Yasui

Naoya Tokoo

Takashi Ishigaki

An electric connection inspection device includes: a cooling plate; an insulating plate provided on the cooling plate; a first measurement electrode provided on the insulating plate; and a second measurement electrode and a third measurement electrode provided above the first measurement electrode and located apart from the first measurement electrode. The insulating plate includes a variable thermal resistance mechanism. A semiconductor device can be installed between the first measurement electrode and the second measurement electrode and between the first measurement electrode and the third measurement electrode.

Energization inspection apparatus, method for manufacturing semiconductor device, and energization method

A semiconductor device including an n-type semiconductor layer formed on a substrate, having a cell region and a gate pad region, and including silicon carbide, and a unit cell formed in the cell region is configured as follows. A p-type body region formed in the semiconductor layer of the gate pad region, a first insulating film formed on the p-type body region, a conductive film formed on the first insulating film, and a second insulating film formed on the conductive film, and a gate pad formed on the second insulating film. Then, the film thickness of the first insulating film is 0.7 &#x3bc;m or more, and more favorably 1.5 &#x3bc;m or more. In addition, the electric field strength of the first insulating film is 3 MV/cm or less. Then, an opening portion is formed on the first insulating film in the gate pad region, and a resistance portion and a connection portion corresponding to the conductive film are formed in the opening portion.

Semiconductor device, power module, and power conversion device

A semiconductor chip includes a semiconductor substrate made of SiC, a front surface electrode formed in a principal surface of the semiconductor substrate, and a rear surface electrode (drain electrode) formed in a rear surface of the semiconductor substrate. The front surface electrode is bonded to a wire, and includes an Al alloy film containing a high melting-point metal. The Al alloy film contains a columnar Al crystal which extends along a thickness direction of the Al alloy film, and an intermetallic compound is precipitated therein.

Semiconductor chip and power module, and manufacturing method of the same

To obtain effective luminance and light efficiency while avoiding discharge, it is necessary to sufficiently increase a current luminous efficiency of gas and an electron emission efficiency of an electron source. In a fluorescent lamp, an anode electric field is increased by setting a pressure of a noble gas or a molecular gas enclosed to 10 kPa or higher, setting an anode voltage to 240 V or lower, and setting a substrate distance to 0.4 mm or smaller. Furthermore, the resulting effect that the current luminous efficiency is increased in proportion to the electric field is used. Also, by applying a MIM electron source having an electron emission efficiency exceeding 10% as an electron source, a non-discharge fluorescent lamp having a light emission luminance equal to or larger than 10[cd/m] and a light emission efficiency equal to or larger than 120 [lm/W] is achieved.

Fluorescent lamp and image display apparatus

A plasma display device includes: a front substrate and a back substrate facing each other and interposing a discharge gap; and a plurality of discharge cells formed by the front substrate and the back substrate, wherein a mixture gas containing Xe is filled in the discharge gap, and a red, green, or blue phosphor materials is arranged in each of the discharge cells. The plasma display device performs a reset operation by, at least, a weak discharge. A crystal material is arranged in the red, green, and blue phosphor materials so as to make weak discharge firing voltages for reset discharges in respective discharge cells uniform.

Plasma display panel and display device using the same

A plasma display apparatus having a priming discharge region PDC partitioned from a display discharge cell DDC, by a traverse rib, at a side where the second electrode between the display discharge cell DDC adjacent in a row direction is adjacent; a second longitudinal rib partitioning the priming discharge region PDC; a third longitudinal rib, further partitioning a region partitioned by the second longitudinal rib into two sections; a convex electrode; and a gap connecting the display discharge cell DDC and the priming discharge cell PDC, wherein a sum of a width in a line direction of a nearly rectangular space region containing adjacent two priming discharge cells PDCs, and a pattern width of the second longitudinal rib is designed larger than a sum of a width in the row direction and a pattern width of the traverse rib.

Plasma display apparatus

By making Nd concentration in the tunneling insulating filmsmaller than Nd concentration in the base electrode first layer, the accumulated electric charge amount in the tunneling insulating filmis reduced and afterimage is decreased. By setting a relation between a position of a stack interface of the base electrodeand a thickness of an insulating layer properly, the generation of a device defect is prevented.

Image display apparatus

The present invention provides an image display capable of enhancing a production yield. The image display comprises a display device including a first plate which has a plurality of electron-emitter elements each having a structure comprised of a base electrode, an insulating layer and a top electrode stacked on one another in this order, the electron-emitter element emitting electrons from the surface of the top electrode when a voltage of positive polarity is applied to the top electrode; a plurality of first electrodes for respectively applying driving voltages to the base electrodes of the electron-emitter elements lying in a row (or column) direction; and a plurality of second electrodes for respectively applying driving voltages to the top electrodes of the electron-emitter elements lying in the column (or row) direction, a frame component, and a second plate having phosphors, wherein a space surrounded by the first plate, the frame component and the second plate is brought into vacuum. In the display apparatus, the at least one electron-emitter element includes the base electrode and the top electrode, at least one of which is connected to the first electrode or the second electrode through a resistor element.

Image display and a manufacturing method of the same

An image display device in which each pixel has a thin-film electron source composed of a lower electrode (which is a signal wire), an electron accelerating layer (which is formed by anodizing the surface of said signal wire), and an upper electrode (which covers said electron accelerating layer and releases electrons), in which the anodized film constituting said electron accelerating layer contains hydrated alumina component and anhydrous alumina component such that their ratio in the side close to the upper electrode is greater than that in the side close to the lower electrode. This structure prevents said thin-film electron source from being deteriorated in diode characteristics by said electron accelerating layer, thereby enhancing the reliability of said image display device.

Image display device

The present invention provides an image display device, by which it is possible to prevent dielectric breakdown between a bottom electrode and a top electrode (top electrode bus line), which make up thin-film type electron sources, and which is free of display defect and has longer service life. On a cathode substratea bottom electrodea tunneling insulatorand a top electrodeare prepared. On a lower layer of the top electrodea top electrode bus lineis formed, and the top electrodeis reliably connected to the top electrode bus linevia a contact electrodeA field insulatorA, a lower layerof the interlayer insulator deposited by sputtering and an upper layerof the interlayer insulator are laminated between the top electrodeand the contact electrode and the bottom electrodeand the bottom electrodeis insulated from the top electrode(top electrode bus line).

A cold cathode type flat panel display which is an image display device includes a vacuum panel container composed of a cathode substrate in which plural cold cathode type electron sources are arranged, an anode substrate, plural spacers for supporting the cathode substrate and the anode substrate, and a glass frame. Plural electrical lines extend in a line direction and a row direction across an interlayer insulator on the cathode substrate. Parts of lines positioned in an upper layer of the plural electrical lines are made into scan lines and lines positioned in a lower layer are made into data lines. Further, parts of the electrical lines positioned in the upper layer are made into spacer lines for giving to the spacers a voltage lower than an acceleration voltage which is applied to an accelerating electrode.

Cold cathode type flat panel display

The invention provides a display device using thin film type electron sources having a structure that can be formed in a simple manufacturing process. A lower electrode, a protective insulating layer and an interlayer film are formed on a cathode substrate. An upper bus electrode made from a laminated film of a metal film lower layer and a metal film upper layer is provided further on the interlayer film. A film of an upper electrode of a thin film type electron source for each pixel constituted by an insulating layer serving as an electron accelerating layer on the lower electrode and the upper electrode is formed on two stripe electrodes of the upper bus electrode in that pixel and another upper bus electrode in an adjacent pixel by sputtering. Then, the upper electrode is separated by self-alignment due to a setback portion of the metal film lower layer and an appentice of the metal film upper layer of the corresponding upper bus electrode. Thus, a thin film type electron source separated in accordance with each pixel is formed.

Display device having a thin film electron source array

The present invention provides an image display device free of display defects and with high reliability to prevent destruction of electron sources due to injection of electric charge. On the outermost periphery of a display region, there are provided a bottom electrodeserving as data line, a scan line busserving as scan line, and dummy potential fixing electrodesDDDandDnot contributing to image display, and these are connected with electrodesandwith low impedance and constant potential.

An display apparatus arranged in a matrix having plural luminance modulation elements for modulating or do not modulating luminance depending upon application of a voltage of positive or reverse polarity, having plural parallel scanning electrodes and plural parallel data electrodes, in which each luminance modulation element is disposed at an intersection between the scanning electrode and the data electrode, and having first driving means connected to the scanning electrodes and outputting scanning pulses, and second driving means connected to the data electrodes, wherein the scanning electrodes are grouped into those in a selected state applied with a scanning pulse and those other than described above in a non-selected state at a certain time point during the scanning period; the number of the scanning lines in the selected state is n; the scanning lines in the non-selected state are grouped into non-selected state scanning lines at a high impedance state and non-selected state scanning lines at a low impedance state, the high impedance non-selected state scanning lines has higher impedance than the scanning lines in the selected state, and the low impedance non-selected state scanning lines has lower impedance than the high impedance non-selected state scanning lines; and the number of the non-selected state scanning lines at the low impedance state is n&#xd7;2 or more.

Display apparatus

A flat type display device is provided which is capable of accurately and easily assembling a spacer when arranging the spacer while reducing the danger of damaging the metal back. In the display device, a plurality of fine holes each having a fluorescent materials are formed on a light transparency substrate and a metal sheet is arranged by a black oxide film formed on the surface of the light transparency substrate side so as to obtain a light absorbing layer. A plurality of concave portions are provided on a surface of the metal sheet of the rear substrate side. A metal back having an openings corresponding to predetermined areas containing each of the concave portions is superimposed on the metal sheet, thereby constituting an acceleration electrode of two-layer structure. The spacer is inserted into the concave portion on the metal sheet exposed in the opening of the metal back.

Display device

Growing community of inventors

Inagi, Japan

Masakazu Sagawa