Hitachi Displays, Ltd.

Canon Kabushiki Kaisha

Panasonic Liquid Crystal Display Co., Ltd.

Japan Display Inc.

Takeshi Izumida

Naoki Tokuda

Masami Iseki

Kouji Ikeda

Kenta Kajiyama

Norihiro Nakamura

Nobuhiko Sato

Hiroshi Kageyama

Takanori Yamashita

Tatsuhito Goden

Fujio Kawano

Hiroyuki Maru

Junya Tamaki

Masahiro Tamura

An organic EL displaying apparatus which suppresses a defective display caused by a leak current at a time when an emission period controlling transistor is off is provided. The organic EL displaying apparatus comprises a plurality of pixels each of which includes an organic EL element, a power supply line, a driving transistor and the emission period controlling transistor, a data line, and a control line. In this apparatus, in a certain one of the pixels, a resistance RILM between source and drain electrodes of the emission period controlling transistor in an off state of the emission period controlling transistor, and a resistance RDr between source and drain electrodes of the driving transistor in a state that a minimum gradation displaying data voltage has been applied to a gate electrode of the driving transistor satisfy RILM&#x2267;RDr.

Organic electroluminescence displaying apparatus which suppresses a defective display caused by a leak current at a time when an emission period controlling transistor is off

The invention provides an image display device capable of reducing the transmission delay of a scanning signal. A plurality of scanning signal lines are wired in one pixel circuit row. Pixel circuits of the pixel circuit row are connected to any of the plurality of scanning signal lines.

Display device

A display apparatus includes data lines, scanning lines arranged to cross the data lines, and pixel circuits aligning along the data lines and the scanning lines, such that one of the pixel circuits corresponds to each intersection between the data lines and the scanning lines. In addition, image signal lines transmit image signals, and switches connect the data lines to the image signal lines so that each of the data lines is connected to one of the image signal lines. The data lines are arranged such that adjacent data lines form a pair of data lines, and adjacent pairs of data lines are spaced apart from each other by two columns of pixel-circuits. Respective data lines of the pair of data lines are connected by the switches to two different image signal lines, and the switches connecting the pair of data lines to corresponding image signal lines are activated simultaneously.

Display apparatus

A plurality of data signal lines each of which is connected to at least one pixel circuit in one pixel circuit column and is not connected to the pixel circuits of other pixel circuit columns are provided to one pixel circuit column, and the pixel circuits in the pixel circuit column are connected to any one of the plurality of data signal lines. An image display device having such a constitution can alleviate lowering of display quality attributed to transmission delay or voltage drop of a scanning signal.

Growing community of inventors

Mobara, Japan

Takeshi Izumida