Casio Computer Co., Ltd.

Kazunori Morimoto

Tsuyoshi Ozaki

Tomoyuki Shirasaki

Yasushi Mizutani

A drive circuit array substrate allowing for tests without mounting any driver ICs and without using expensive panel contact jigs and production and test methods thereof are provided. A data voltage application circuit, data selection circuit, gate selection circuit, and anode driver connected to a display pixel forming zone are formed on a drive circuit array substrate. The data voltage application circuit, data selection circuit, gate selection circuit, and anode driver allows for lighting test and aging test of the light emitting elements in the display pixel forming zone and measurement of transistor characteristics without mounting any driver ICs and without using expensive panel contract jigs.

Drive circuit array substrate and production and test methods thereof

A light-emitting device comprises a power supply line, at least one data line, at least one pixel having a light-emitting element with one end electrically connected to the power supply line and another end set to a prescribed potential, and a first transistor connecting the data line(s) and one end of the light-emitting element, a current supplying circuit that outputs a verification current of a preset value, and a data driver unit having voltage measuring circuits that acquire a voltage of the one end of the light-emitting element as the verification voltage when the verification current flows via a current path of the data line and the first transistor of the pixel, from the one end of the light-emitting element to the other end from the current supplying circuit via the power supply line.

Light-emitting device, display device, and method for controlling driving of the light-emitting device

At a first timing, an ink jetting unit of a printer head coats an aqueous ink or an organic solvent ink on pixel forming regions on a panel substrate. At a second timing, a first infrared light source unit or a second infrared light source unit disposed adjacently to the ink jetting unit radiates infrared light to the aqueous ink or the organic solvent ink coated on the pixel forming regions to heat the ink and vaporize and dry the solvent in the aqueous ink or the organic solvent ink to fix a hole transporting material or an electron transporting material on the panel substrate.

Growing community of inventors

Sagamihara, Japan

Kazunori Morimoto