Seiko Epson Corporation

Other

Mitsubishi Denki Kabushiki Kaisha

Mitsutoshi Miyasaka

Yoichi Momose

Kiyoshi Sekijima

Atsushi Miyazaki

Hidetada Tokioka

Tetsuya Ogawa

Ichio Yudasaka

Piero Migliorato

Thomas W Little

Kimio Nagasaka

Mitsuo Inoue

Yukio Sato

Yojiro Matsueda

Tomohiro Sasagawa

Hideyuki Kawai

Hiroyuki Hara

Satoshi Takenaka

Yasunori Koide

Takao Sakamoto

Hiroaki Jiroku

Hiroyuki Yoshida

Nobuhiko Kenmochi

Basil Lui

Hiroaki Ebihara

Satoshi Inoue

Kazuhiko Amano

Junichi Nishimae

Tokuroh Ozawa

Tatsuya Shimoda

Tatsuki Okamoto

Takashi Toya

Junichi Sano

Tomio Ikegami

Yuko Komatsu

Eiichi Fujii

Seiichiro Higashi

Yasushi Hiroshima

Takashi Nakazawa

Taimei Kodaira

Kiyofumi Kitawada

Minoru Matsuo

Hiroyuki Ohshima

Yukio Satoh

Satoshi Takahashi

A circuit device includes a scan line drive circuit that drives a plurality of scan lines of an electro-optical element. A field for constituting one image includes a plurality of subfields. The scan line drive circuit selects once a scan line group to be selected among the plurality of scan lines, in a subfield included in the plurality of subfields. The scan line group includes a scan line connected to a pixel circuit to which an i-th bit is written in a subfield, and a scan line connected to a pixel circuit to which a j-th bit is written in a subfield.

Circuit device, electro-optical element, and electronic apparatus

An electro-optical device includes a pixel circuitG, a pixel circuitB, a high potential lineG configured to supply a high potential VDDG to the pixel circuitG, a high potential lineB configured to supply a high potential VDDB to the pixel circuitB, and a low potential lineconfigured to supply a first low potential VSS1 to the pixel circuitG and the pixel circuitB. The pixel circuitG includes a light-emitting elementG configured to display G, the pixel circuitB includes a light-emitting elementB configured to display B, and the high potential VDDG and the high potential VDDB are mutually independent.

Electro-optical device and electronic apparatus

The electro-optical device includes a plurality of digital scanning lines, a plurality of analog scanning lines, a digital signal line, an analog signal line, and a plurality of pixel circuits. Each of the pixel circuits includes a light emitting element, a digital driving circuit, and an analog driving circuit. The digital driving circuit performs digital driving in which a drive current is supplied to the light emitting element in a period of a length corresponding to a grayscale value. The analog driving circuit performs analog current setting in which a current value of the drive current is set based on an analog data voltage. In a period in which the pixel circuit connected to an s-th digital scanning line and an s-th analog scanning line performs the analog current setting, the pixel circuit connected to a t-th digital scanning line and a t-th analog scanning line performs the digital driving.

An electro-optical device includes a plurality of digital scanning lines, a digital signal line, and a plurality of pixel circuits. Each of the pixel circuits includes a light emitting element and a digital driving circuit. The digital driving circuit performs digital driving to turn the light emitting element ON-state or OFF-state based on a grayscale value. The digital driving circuit keeps the light emitting element ON-state by supplying a drive current to the light emitting element, in a period in which an enable signal is active, of a grayscale display period having a length corresponding to the grayscale value. The control line driving circuit sets a period in which the enable signal is active. A ratio, with respect to the grayscale display period, of an ON-state period in which the light emitting element is ON-state changes in accordance with the period in which the enable signal is active.

A circuit device includes a scan line drive circuit that drives a plurality of scan lines of an electro-optical element, and an enable line drive circuit that outputs an enable signal to a plurality of pixel circuits. A field for constituting one image includes a plurality of subfields. The enable line drive circuit outputs an enable signal that is active in a partial period of a first display period corresponding to a first bit, which is a lower bit of display data. When the enable signal is active in a partial period of the first display period, a pixel is ON-state or OFF-state.

An electro-optical device includes a pixel circuitG, a pixel circuitB, a high potential lineG configured to supply a high potential VDDG to the pixel circuitG, a high potential lineB configured to supply a high potential VDDB to the pixel circuitB, and a low potential lineconfigured to supply a first low potential VSSto the pixel circuitG and the pixel circuitB. The pixel circuitG includes a light-emitting elementG configured to display G, the pixel circuitB includes a light-emitting elementB configured to display B, and the high potential VDDG and the high potential VDDB are mutually independent.

An electro-optical device includes a scan line, a data line, a pixel circuit provided at an intersection of the scan line and the data line, a first high potential line, a first low potential line, a second high potential line, and a second low potential line. The pixel circuit includes a light emitting device, a memory circuit disposed between the first high potential line and the first low potential line, a first transistor of N-type including a gate electrically connected to the memory circuit, and a second transistor disposed between the memory circuit and the data line. The light emitting device and the first transistor are disposed in series between the second high potential line and the second low potential line.

An electro-optical device includes scan line, data line, pixel circuit located at a position corresponding to an intersection of the scan line and the data line, a first high potential line supplies a first potential, a low potential line supplies a second potential, and a second high potential line supplies a third potential. The pixel circuit includes a light emitting element, a memory circuit disposed between the first high potential line and the low potential line, a first transistor including a gate electrically connected to the memory circuit, and a second transistor including a gate electrically connected to the scan line. The second transistor is disposed between the memory circuit and f the data line. A potential difference between the first potential and the second potential is smaller than a potential difference between the third potential and the second potential.

Provided are a scan line, a data line, a pixel circuit provided corresponding to an intersection between the scan line and the data line, and an enable line. The pixel circuit includes a memory circuit, a light-emitting element, and an enable line driving circuit, the light-emitting element changes luminance in accordance with an image signal retained in the memory circuit, the enable line driving circuit controls a light emission enabled state of the light-emitting element, the pixel circuit includes a first pixel circuit, a second pixel circuit, a third pixel circuit, and a fourth pixel circuit, the enable line includes a first enable line and a second enable line, the first pixel circuit and the second pixel circuit are electrically connected with the first enable line, and the third pixel circuit and the fourth pixel circuit are electrically connected with the second enable line.

An electro-optical device includes a scan line, a data line, a pixel circuit, and an enable line. The pixel circuit includes a memory circuit, a light emitting element, and a first transistor. The light emitting element changes brightness in response to an image signal held in the memory circuit. The first transistor controls light emission and non-light-emission of the light emitting element. A field for displaying a single image each includes a sub-field (SF) and a sub-field (SF). The sub-field (SF) and the sub-field (SF) include a non-display period during which the light emitting element does not emit light and a display period during which the light emitting element is allowed to emit light. A length of the display period in the sub-field (SF) is different from a length of the display period in the sub-field (SF).

An electro-optical device includes a first scan line, a second scan line, a data line, a pixel circuit located at a position corresponding to an intersection of the data line and each of the first scan line and the second scan line, and a scan line drive circuit supplying one of a selection signal and a non-selection signal to the first scan line and supplying one of a maintain signal and a non-maintain signal to the second scan line. The scan line drive circuit is capable of output the selection signal and the non-maintain signal during an identical period.

Electro-optical device, electronic device, and electronic apparatus

Growing community of inventors

Suwa, Japan

Mitsutoshi Miyasaka