Seiko Epson Corporation

Tokuro Ozawa

Ryoichi Nozawa

Toshiyuki Kasai

Yoichi Imamura

Eiji Kanda

Shinsuke Fujikawa

Shin Fujita

Hideto Ishiguro

Ayae Endo

Kenji Hayashi

Toshiharu Matsushima

Katsunori Yamazaki

Takashi Miyazawa

Yojiro Matsueda

Hayato Nakanishi

Tsukasa Eguchi

Yasushi Tsuchiya

Tomoyuki Itoh

Kasori Takahashi

A sensing circuit having a first substrate, a second substrate, a layer of dielectric material, a first electrode, a second electrode and an electrostatic capacitance detection unit is provided. The second substrate faces the first substrate. The dielectric material is held between the first substrate and the second substrate. The first electrode and the second electrode are arranged between the dielectric material and the first substrate. The electrostatic capacitance detection unit is configured to produce a detection signal having an amplitude according to a value of capacitance formed between the first electrode and the second electrode through the dielectric material.

Sensing circuit, display device and electronic apparatus

To reduce the time for writing a voltage onto a gate of a driving transistor. In an initialization period, a node B is fixed to an initial voltage V, transistors are turned on, and a current flows into an OLED element, such that a voltage according to the current is held at the node A. Thereafter, the transistors are sequentially turned off, such that a threshold voltage of a driving transistor is held at the node A. In a writing period, a transistor is turned on and a data signal X-j is supplied, such that a voltage of the node B varies by the amount according to the current flowing into the OLED element. The voltage of the node A varies from the threshold voltage by the amount which is obtained by dividing the voltage variation by a capacitance ratio. In a light-emitting period, the transistor is turned on, such that a current according to the voltage of the node A flows into the OLED element.

Electronic circuit, method of driving electronic circuit, electro-optical device, and electronic apparatus

A driving method of an electro-optic device includes determining which condition is satisfied among a plurality of conditions including a first condition where a plurality of pixels include only a first pixels of which an optical state is changed from a second optical state to a first optical state and a third pixels of which the optical state is not changed, a second condition where the plurality of pixels include only a second pixels of which the optical state is changed from the first optical state to the second optical state and the third pixels, and a third condition where the plurality of pixels include both the first pixels and the second pixels, based on data stored in a memory storing the data indicating the optical state of the plurality of pixels.

Driving method, control device, display device, and electronic apparatus

The invention provides an electro-optical apparatus that can prevent a shift in a threshold voltage of an amorphous silicon transistor while driving an organic EL device in a pixel circuit including the amorphous silicon transistor. A characteristic-adjustment circuit can be provided, which has a function of returning a shift in the threshold voltage of the amorphous silicon transistor included in the pixel circuit to the original state.

Electro-optical apparatus and method of driving the electro-optical apparatus

An electro-optical device includes a pixel circuit, and a driving circuit. The pixel circuit includes a driving transistor, an electro-optical element, a first capacitive element, a first switch, and a second switch. The driving circuit varies a potential at a control terminal during a first period, sets the potential at the control terminal to a compensation initial value during a second period, varies a driving potential from a first potential to a second potential such that the driving transistor is turned on during a third period, supplies a grayscale potential corresponding to a designated grayscale to the signal line and controls the second switch to be turned on during a fourth period, and varies a voltage between the control terminal and a first terminal with the passage of time during a fifth period.

Electro-optical device, method for driving electro-optical device, control circuit and electronic device

An electro-optical device includes a pixel circuit, and a driving circuit. The pixel circuit includes a driving transistor, a first capacitive element, an electro-optical element, and a switch. The driving circuit controls the switch to be turned off, varies a potential such that the driving transistor is turned on, during a first period, sets a potential at a control terminal to a compensation initial value by controlling the switch to be turned on, during a second period, supplies a grayscale potential corresponding to a designated grayscale, varies a driving potential such that the driving transistor is turned on, during a third period, and varies a voltage between the control terminal and a first terminal with the passage of time, during a fourth period.

Electro-optical device, method for driving electro-optical device, control circuit and electronic apparatus

An electronic apparatus includes an electronic circuit including a driving transistor, an additional capacitive element and a first switch for controlling a connection between a circuit point and a control terminal and a driving circuit which controls the first switch to an off state and changes the potential of the control terminal such that the driving transistor transitions to an on state in a first period, controls the first switch to the on state so as to set the potential of the control terminal to an initial compensation value, in a second period, and controls the first switch to the on state and changes the driving potential from the first potential to the second potential such that the driving transistor transitions to the on state, in a third period.

Electronic apparatus and method of driving the same

To reduce time for writing a target voltage in the gate of a driving transistor. In a first period, a transistoris switched on to allow a driving transistorto function as a diode and transistorsandare switched on to electrically connect the drain of the driving transistorto a data line, to which an initial voltage is applied, such that the initial voltage is applied to the gate of the driving transistor. In a second period, a transistoris switched off such that the gate of the driving transistoris maintained to have an off voltage corresponding to the power source. In a third period, the transistoris switched off such that the voltage of the data lineis converted into a grayscale voltage to maintain the gate of the driving transistor at the target voltage. In a fourth period, the driving transistorflows the current corresponding to the maintained gate voltage to an OLED element

Electronic circuit, method of driving the same, electro-optical device, and electronic apparatus

A method for driving a light-emitting device in which a plurality of pixel circuits are arranged in correspondence with the intersection of a plurality of scanning lines and a plurality data lines, the pixel circuit having a light-emitting element and a driving transistor that controls the current amount of a driving current flowing the light-emitting device, comprises repeating the process within unit period including a first period and a second period following the first period, wherein the second period process includes selecting one scanning line of the plurality of scanning lines, and supplying and holding a data voltage corresponding to the luminance of the light-emitting element to a gate of the driving transistor via the data lines with respect to the plurality pixel circuits connected the selected scanning lines, and wherein the first period process includes selecting two or more scanning lines of the plurality of scanning lines, and correcting the unbalance of the driving current output from the driving transistor in the plurality of pixel circuits connected to the selected scanning lines.

Light-emitting device, method for driving the same driving circuit and electronic apparatus

Provided is a method of driving an electro-optical element having a first electrode, a second electrode, and an electro-optical material provided between the first electrode and the second electrode and having optical characteristics which vary in accordance with an applied voltage, including: applying a fixed voltage to the first electrode and applying a data voltage according to a gray scale level to be displayed to the second electrode in a first period; applying the data voltage to the first electrode and applying the fixed voltage to the second electrode in a second period; and alternately repeating the driving in the first period and the driving in the second period.

Method of driving electro-optical element, pixel circuit, electro-optical device and electronic apparatus

A method of manufacturing an electro-optical device having a plurality of unit regions arranged in a matrix on a surface of a flat plate-shaped base substrate. In each of the plurality of unit regions, a pixel electrode is formed. A counter electrode is formed on an opposite side to the base substrate with respect to the pixel electrodes. In pixel regions, which are first unit regions constituting a predetermined image among the plurality of unit regions, OLED elements are selectively formed. The OLED elements are interposed between the respective pixel electrodes and the counter electrode. In non-pixel regions, which are second unit regions other than the first unit regions among the plurality of unit regions, insulators are formed. The insulators are interposed between the respective pixel electrodes and the counter electrode.

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Suwa, Japan

Tokuro Ozawa