Seiko Epson Corporation

Akihiko Ito

Shoichi Iino

Takashi Kurumisawa

Motoaki Nishimura

Toshiaki Tokumura

Ryo Ishii

Shingo Isozaki

Masahiko Miura

Makoto Katase

Yoichi Imamura

Masuhide Ikeda

Akira Inoue

Satoru Ito

Yuzuru Sato

Suguru Yamazaki

Hideki Ogawa

Haruo Hayashi

Yutaka Ozawa

Minoru Yazaki

Sugura Yamazaki

An electro-optical apparatusincludes a first electro-optical panelthat is a segment panel, a first display driverthat drives the first electro-optical panel, a second electro-optical panelthat is a matrix panel, and is arranged to overlap the first electro-optical panelin planar view of the first electro-optical panel, and a second display driverthat displays an image on the second electro-optical panelby driving the second electro-optical panel. The first electro-optical panelis arranged on the side from which an image is visually recognizable. The second display driveroutputs a drive voltage to a segment electrode of the first electro-optical panel

Electro-optical apparatus, display control system, display driver, electronic device, and mobile unit

A display controllerincludes an interface circuitthat receives abnormal display line detection information from a display driverthat drives an electro-optical panel, and a processing circuitthat controls the display driver. The processing circuitperforms determination on an abnormal display area based on the abnormal display line detection information. If a specific display pattern is displayed in the abnormal display area, the processing circuitoutputs, via the interface circuit, image data for displaying the specific display pattern in a destination display area that is a display area different from the abnormal display area.

Display controller, display control system, electro-optical device, electronic apparatus, and mobile unit

A display driver includes a processing circuit that performs gray level gamma conversion processing on display data, a memory that stores correspondence information, and a drive circuit. The memory stores lower n bits of m-bit output gray level data in an output gray level group, the processing circuit generates output gray level data corresponding to the m-bit input gray level data based on lower n-bit data, and the drive circuit outputs a drive voltage based on the output gray level data.

Display driver, display controller, electro-optical device, and electronic apparatus for reducing memory size of a memory thereof

A display driver includes a processing circuit to which information regarding a temperature range is input and that performs gamma conversion processing on display data with respect to gray level. In the gamma conversion processing, at a first set point, a first output gray level is gray level m when the temperature range is a first temperature range, and is gray level n (m and n are integers of zero or more and are different to each other) when the temperature range is a second temperature range, and the processing circuit changes, when the temperature range has transitioned from the first temperature range to the second temperature range, the first output gray level from gray level m to gray level n by a step smaller than |n&#x2212;m|.

Display driver, display controller, electro-optical device, and electronic apparatus

A display driver includes a drive circuit that receives input of a first reference voltage to an nth reference voltage (where n is an integer of two or more), and outputs a drive voltage that is based on a grayscale voltage obtained by voltage division of an ith reference voltage and an (i+1)th reference voltage (where i is an integer of n&#x2212;1 or less), and a control circuit that utilizes frame rate control on first display data corresponding to a grayscale voltage obtained by voltage division of the first reference voltage and a second reference voltage to generate second display data, and supplies the second display data to the drive circuit.

Display driver, electro-optic apparatus, electronic device, and control method for display driver

The scan line drive circuit outputs selection signals GVand GVto select scan lines in the display panel. Assuming that a period in which a data voltage SVafter being subjected to inversion of the polarity thereof is supplied to a data line in the display panel is a first period TSD, and that a period in which the data voltage SVafter not being subjected to inversion of the polarity thereof is supplied to the data line is a second period TSC, the period TPD from the start of the first period TSD until the selection signal GVis activated is longer than the period TPC from the start of the second period TSC until the selection signal GVis activated.

Scan line drive circuit, display driver, electro-optical apparatus, electronic device, and driving method

An electro-optical device includes, on a substrate, three sub-pixels, three sampling switches, three data lines, three image signal lines, and three lead wiring lines. The three sub-pixels correspond to red, green and blue, respectively. The three sub-pixels are included in a unit pixel. The three sampling switches correspond to the three sub-pixels, respectively. The three data lines electrically connect the three sub-pixels and the three sampling switches with each other, respectively. The three image signal lines, which are provided on a side opposite to the three sub-pixels with respect to the three sampling switches, correspond to the three sampling switches, respectively. The three lead wiring lines electrically connect the three sampling switches and the three image signal lines with each other, respectively. Among the three sampling switches, a sampling switch corresponding to green is disposed close to the three image signal lines compared to other two sampling switches.

Electro-optical device including a plurality of scanning lines

A display panel has a first pixel group selected by a first scan line, and second pixel group selected by second scan line. A data line is shared by pixel in the first pixel group and a pixel in the second pixel group. In first scanning period, a driving unit in a circuit device outputs a data voltage with first polarity to the first data line, and outputs data voltage with second polarity, which is polarity opposite to the first polarity, to the second data line. In second scanning period, the driving unit outputs a data voltage with third polarity to the first data line, and outputs a data voltage with fourth polarity, which is polarity opposite to the third polarity, to the second data line. A polarity setting unit in the circuit device sets the first polarity, the second polarity, the third polarity, and the fourth polarity.

Circuit device, electro-optical apparatus, and electronic instrument

An electro-optical device includes a data line driving circuit that supplies a video signal, in which a data voltage having magnitude of voltage applied to the data lines in the amount of k (k&#x3e;1) in accordance with an input video divided into frames is subjected to time division multiplexing, to a signal line, a selection circuit that selects at least one data line which becomes a supply destination of the video signal supplied to the signal line, a scanning line driving circuit that selects at least one scanning line, a control circuit that controls a predetermined precharge voltage to be applied to the data lines in the amount of k in the precharge time period, and a correction circuit that corrects a gradation level difference between the pixel applied with the precharge voltage and the pixel applied with no precharge voltage.

Electro-optical device, method of controlling electro-optical device, and electronic instrument

A scanning line driving circuit sequentially selects each of a plurality of scanning lines for each unit period. A signal supply circuit supplies, to a signal line, a gradation potential in accordance with a designated gradation of a pixel in a write period within the unit period. The signal supply circuit supplies a pre-charge potential to the signal line in a pre-charge period before the start of the write period in a first unit period of the plurality of unit periods, and the supply of the pre-charge potential to the signal line stops in a second unit period.

Electrooptical device and electronic apparatus

A circuit device includes a grayscale voltage generation circuit that generates a plurality of grayscale voltages, a data processing unit that performs data processing of first color component display data to third color component display data, and a drive unit that drives a display panel based on the first color component display data to the third color component display data that are subjected to the data processing and the plurality of grayscale voltages that are used in common for the first color component display data to the third color component display data. The data processing unit performs grayscale correction processing on at least one color component display data of the first color component display data to the third color component display data in a grayscale correction range.

Circuit device, electro-optical device, and electronic apparatus

A driving circuit perform first driving in which, in a first write period, a grayscale potential in an odd-numbered row is supplied to the pixels of a first group and, in a second write period, the grayscale potential is supplied to the pixels in an even-numbered row, and can perform second driving in which, in the first write period, the grayscale potential in the even-numbered row is supplied to the pixels of a second group and, in the second write period, the grayscale potential is supplied to the pixels in the odd-numbered row. In a right eye display period, the first driving is performed in a unit period Uand the second driving is performed in a unit period U. In a left eye display period, the second driving is performed in the unit period Uand the first driving is performed in the unit period U

Electro-optic apparatus and electronic apparatus

A right unit period corresponding to a right-eye image and a left unit period corresponding to a left-eye image are set alternately. The scanning line driving circuit selects the plurality of scanning lines in several units at each right unit period, the glasses control circuit controls both of the shutter for the right eye and the shutter for the left eye to be in the closed state at least a portion of an image update period at which the data line driving circuit supplies a gradation potential corresponding to the right-eye image to each data line and the glasses control circuit controls the shutter for the right eye to be in the opened state and controls the shutter for the left eye to be in the closed state at the display period after the lapse of the image update period.

Electro-optical device and electronic apparatus

In at least one embodiment, an electro-optical device displays a right-eye image and a left-eye image for each display period. The driving circuit supplies a gradation potential to each of the pixels according to a specific gradation using image data which corresponds to the unit period in each of a plurality of unit periods in each of the display periods, and sequentially selects one or more scanning lines in a plurality of lines and supplies a gradation potential to each of the signal lines according to a specific gradation of each of the pixels which corresponds to the one or more scanning lines in a selected state in a unit period in each of the display periods. A driving control section executes overdrive of each of the pixels in the driving circuit in a first unit period in each of the display periods.

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Tatsuno-machi, Japan

Akihiko Ito