Dai Nippon Printing Co., Ltd.

Dai Nippon Insatsu Kabushiki Kaisha

Hitachi-kokusai Electric Inc.

Hisao Tanabe

Naoki Kobayashi

Hiroyuki Mori

Toru Miyake

Yasushi Sato

Masaaki Asano

Yoshiaki Tsuruoka

Yoshiki Kudo

Reiji Hattori

Naoshige Higuchi

A merchandise management system comprises a shelf tag provided in an exhibit position of a product, and a portable reader/writer for changing a display content on the shelf tag. The shelf tag comprises a display section using an electronic paper, an IC tag, a control section which changes product information based on change information, and controls a displayed status on the shelf tag based on an electrical power signal and the product information, and a receiving section which receives the change information and the electrical power signal from the reader/writer via a radio communication, and outputs the received change information to the changing device, and outputs the received electrical power signal to the controlling device. The reader/writer generates the change information based on a displayed status to be changed, generates the electrical power signal for driving the shelf tag, and transmits it to the shelf tag.

Merchandise management system and information storage medium

Disclosed is an organic EL display apparatus comprising: a light emitting section; a current control section which controls a current to be flown to the light emitting section; a photoelectric converting section which generates a current upon detecting light emitted from the light emitting section; a first switching section which switches between transmission and non-transmission of the current generated; an amplifying section which performs current-voltage conversion of the current transmitted by the first switching section and amplifies it; a comparison amplifying section which performs comparison and amplification of a voltage value obtained by the amplification and a voltage value corresponding to the image signal; a second switching section which switches between transmission and non-transmission of the voltage value resulting from the comparison and amplification; and an image signal holding capacitor which is charged or discharged according to the voltage value transmitted by the second switching section.

Organic EL display apparatus

A main object of the present invention is to make it possible to supply current to electric field light emitting elements without decreasing the aperture ratio of pixels. In order to achieve the object, the present invention provides an image displaying device wherein: current driven typed light emitting elements and transistors for current driving are formed on a same substrate; comprising a plurality of display cells having such a structure that the current driven typed light emitting elements and transistors for current driving are connected in between a power supply line and a ground line; the transistors for current driving are selectively driven to conduct display; and a power supply electrode column for supplying currents to each display cell is formed on a power supply common electrode that is formed on a surface of a facing substrate parallel to the substrate.

Image display

A plasma display panel has a front plate (10) and a back plate (3) disposed in parallel and opposite to each other, and spaced a predetermined distance apart from each other by partition walls (1a, 1b, 1c). The partition walls (1a, 1b, 1c) define discharge spaces (2) each having a plurality of discharge cells. Phosphor layers (9) are formed on surfaces of the discharge spaces (2). The partition walls (1a, 1b, 1c) is formed of a material containing at least one of red, green and blue pigments. Since the partition walls (1a, 1b, 1c) are capable of luminance adjustment and white balance adjustment, the plasma display panel does not need any additional manufacturing processes and can be fabricated at a relatively low cost.

Plasma display device with auxiliary partition walls, corrugated, tiered

A plasma display (PDP) has a front plate, a rear plate, barrier ribs formed in a space between the front and the rear plate so as to form discharge cells in the space, buses extended along the barrier ribs, and discharge terminals disposed in the discharge cells, respectively. The buses and the discharge terminals are electrically connected by straight resistors. Connecting parts are extended from the buses along the alternate barrier ribs so as to connect the buses and the resistors.

Plasma display panel

A method of forming a fluorescent screen for a plasma display panel provided with a front plate and a rear plate disposed parallel to each other and a cell barrier mounted on the front or rear plate and constituting a plurality of cells as display elements is characterized in that the cell barrier is located on a surface of the front or rear plate facing the other plate, a slurry solution containing a phosphor is filled in a portion defined by a cell wall of the cell barrier on the front or rear plate, only the wall surface of the cell barrier is exposed, and so a photosensitive layer containing a phosphor is formed at a portion inside the cell barrier. The fluorescent screen forming method is further characterized in another aspect in that a slurry solution containing a phosphor fills inside the cell of the cell barrier disposed on the plate, the plate is inclined immediately thereafter with an inclination of about 90.degree. or more degrees with respect to a horizontal plane, the rear plate in an inclining state is settled till the phosphor in the slurry solution is precipitated on the cell wall of the cell barrier, and the cell wall after the precipitating process is dried and hardened.

Growing community of inventors

Tokyo, Japan

Hisao Tanabe