International Business Machines Corporation

Asao Terukina

Mitsuru Ikezaki

Mikio Kurihara

Kaoru Kusafuka

Hidehisa Shimizu

Fumitoshi Kiyooka

Hideo Iiyori

Yoshiharu Fujii

Seiji Koyama

Katsurou Hayashi

Tohru Nozawa

Yasusuke Suzuki

In each pixel region of a liquid crystal panel of an in plane switching mode, a pixel electrode is made to have a two-layer structure composed of a lower pixel electrode located in the same layer as a signal line and of an upper pixel electrode located in the same layer as a common electrode. Moreover, an electrode portion of the lower pixel electrode is made closer to the signal line than the upper pixel electrode. Furthermore, the signal line, a gate line and the common electrode are arranged in an overlapped manner.

Display panel for a display device

A liquid crystal display structure, includes a glass substrate and at least one or more chips mounted on the glass substrate including flexible printed circuit connect pins. A common wiring for connecting the at least one or more chips to a flexible printed circuit is formed on the glass substrate. The common wiring is connected to the flexible printed circuit connect pins of the at least one or more chips and to the flexible printed circuit at at least one position on the common wiring.

Chip-on-glass (COG) structure liquid crystal display (LCD)

A D/A converter of a current output type desirably compensates for changes in the switching characteristic that arise in each constant current circuit. The D/A converter generates an analog output current that is in response to the level of input digital data and outputs it from an output side by switching each of output currents of a plurality of constant current circuits either to the output side or to a non-output side, in response to the input digital data. The D/A converter performs feedback control, for values of the output currents for the constant current circuits, based on an analog output current at the non-output side during a period when the output currents of all of the constant current circuits are connected to the non-output sides.

DAC with feedback control for current source bias during non-display

Growing community of inventors

Yokohama, Japan

Asao Terukina