Canon Kabushiki Kaisha

Shigeki Kondo

Hidemasa Mizutani

Yoshinori Nakajima

Osamu Yuki

Shigetoshi Sugawa

Mamoru Miyawaki

Akira Ishizaki

Yoshio Nakamura

Hiroyuki Nakamura

Koichi Sono

Daisuke Yoshida

Seiji Hashimoto

Takashi Moriyama

Seishi Miura

Kazuyuki Shigeta

Masahiro Fushimi

Takayuki Ishii

Tetsunobu Kouchi

Takao Yonehara

Kiyofumi Sakaguchi

Nobuhiko Sato

Katsuhito Sakurai

Shunsuke Inoue

Katsuhisa Ogawa

Shigeyuki Matsumoto

Yujiro Ando

Hideya Kumomi

Tatsuro Yamazaki

Haruo Fujii

Junri Ishikura

Hiroki Kisu

Masaaki Matsushima

Tetsunobu Kohchi

Norihiko Ochi

Takushi Kimura

Masahiro Kamiyoshihara

Toshiko Morii

Naoari Shibata

Masayuki Morohashi

Osamu Yuuki

Fumihiko Arishima

A manufacturing method of a top emission organic EL element includes a step of providing an insulating layer on a substrate, a processing step of processing a center area within a region in which the insulating layer is provided, a step of forming a bank on the insulating layer, a lower electrode material applying step, a luminescent material applying step, and an upper transparent electrode forming step. The insulating layer is provided such that a contact angle to a solution to be applied in forming a lower electrode becomes smaller at the center area than the contact angle at a peripheral area within the region.

Top emission organic EL element and manufacturing method thereof

An image processing apparatus, includes: a first storage unit configured to store first correction data reducing brightness unevenness corresponding to a first gradation value; a second storage unit configured to store second correction data reducing brightness unevenness corresponding to a second gradation value which is lower than the first gradation value; and a correction unit configured to correct gradation values, which are not less than the first gradation value, of the input image data, in use of at least the first correction data, and corrects gradation values, which are less than the first gradation value, of the input image data, in use of at least the second correction data.

Image processing apparatus and image processing method

The present invention provides an organic light emitting device array which reduces the change of white balance even if an observation angle is changed. In an organic light emitting device array comprising a plurality of organic light emitting devices which emit lights of different colors, an optical path difference is set such that signs of gradients at an optical path difference of 2 L of interferograms for all the plurality of organic light emitting devices are identical to each other.

Organic light-emitting device array and display

An image display apparatus includes a display unit and a voltage source, with the display unit having display devices and pixel circuits. Each of the pixel circuits is provided with a drive transistor which has a first primary electrode connected to one terminal of each of the display devices, a second primary electrode connected to a first common electrode, and a control electrode for controlling by an electric potential the magnitude of a drive current supplied to the display devices. In addition, and a control transistor has a source electrode and a drain electrode connected to the control electrode and the first primary electrode, respectively, and a gate electrode to which a signal switching between an on-state and an off-state is supplied, with an electric potential of the control electrode being set up at the on-state. The voltage source can adjust a voltage applied between the first common electrode and a second common electrode with another terminal of the display device being connected thereto.

Display apparatus

A method for manufacturing an image display apparatus includes (i) preparing a display unit, wherein the display unit has a plurality of pixel circuits, each of the plurality of pixel circuits being provided with a drive transistor having a first main electrode connected to one terminal of a display device and a second main electrode and a control electrode connected to a power supply, for supplying a drive current to the display device, and a control transistor disposed between the control electrode and the first main electrode in the drive transistor for setting an electric potential of the control electrode of the drive transistor, and (ii) adjusting a voltage applied to between the second main electrode and another terminal of the display device.

A multicolor light-emitting device includes a plurality of organic EL devices each having two or more different luminescent colors. The multicolor light-emitting device includes a plurality of organic EL devices each having an organic compound layer including a light-emitting layerbetween a reflecting electrodeand a transparent electrodeThe plurality of organic EL devices each has two or more different emission spectra, wherein light-emitting regions in the light-emitting layer of the organic EL devices each having different emission spectra are located in different positions in the layer thickness direction corresponding to the different emission spectra.

Multicolor light-emitting device

A drive circuit including a drive transistor for feeding to a load a drive current corresponding to an input signal. The drive circuit has a correction circuit that supplies a correction signal corresponding to an impedance of the load to a gate of the drive transistor to correct the drive current to be fed to the load by the drive transistor, and in which the load is a light-emitting element. One terminal of the light-emitting element is connected to a gate of a transistor for correction, and when a predetermined potential Ps is set to a value calculated by deducting a threshold voltage Vth of the transistor for correction from a terminal potential Pi of the light-emitting element with respect to a drive current, the drive circuit sets a source potential of the transistor for correction to the predetermined potential Ps to thereby generate a voltage corresponding to an impedance of the light-emitting element as a source-to-drain current of the transistor for correction.

Drive circuit and image forming apparatus using the same

In case an input voltage is zero, to sufficiently shut off an output current, a source side of a first transistor Tis connected to the drains of fourth and fifth transistors Tand T, and during a self-bias period of the first transistor T, a source of the first transistor Tis made a second potential through the fourth transistor T, and in a gate potential setting period of the first transistor Tby an input voltage Vin after the completion of the self-bias period, the source of the first transistor Tis made a third potential through the fifth transistor T

Voltage current conversion device and light emitting device

In a display device having a display region formed by disposing a plurality of organic light emitting elements such as organic EL elements, it becomes possible to prevent penetration of water into the display region to suppress degradation in display characteristics even during drive over a long period of time and to improve long-term reliability. There is provided a display device comprising a display region () having a plurality of organic light emitting elements disposed on a substrate (), each of the plurality of organic light emitting elements having an organic layer (comprising a light emitting layer interposed between an anode and a cathode (), wherein the display region () is formed on a first insulating protective layer () provided on the substrate (), and a surface on a side opposite to a substrate () side and an entire periphery of the display region () are covered with an insulating protective film ().

Display device with protective film over display region

A configuration for decreasing the leakage electric current of a transistor for control for controlling an electric potential holding operation of a control electrode of a transistor for drive for flowing an electric current through a display device by adjusting the output electric potential of an electric potential source is disclosed.

A process for producing a crystalline thin film is provided which comprises melting and resolidifying a starting thin film having regions different in the state coexisting continuously. A small region of the starting thin film has a size distribution of number concentration of crystal grains or crystalline clusters different from that of the surrounding region. In the process of melting and resolidification, the crystal grain grows preferentially in the one region to control the location of the crystal grain in the crystalline thin film.

Crystalline thin film and process for production thereof, element employing crystalline thin film, circuit employing element, and device employing element or circuit

Gradation is improved in image formation by image-forming apparatus employing a light emitting elements such as organic light-emitting element, and image quality. A light-emitting element is provided in which the emission and no emission of light is controlled by the intensity of the input signal from the scanning line and the signal line by flowing constant electric current to a two-input-differential connection circuit one of which is connected to the light-emitting element.

Driving circuit of active matrix type light-emitting element

A light-emitting element and a picture signal current supply circuit are formed near each of the crossings of scan lines and signal lines and a charging circuit is provided to precharge the electric capacitance of the light-emitting element with an electric load that is lower than the light-emitting threshold level of the element. With this arrangement, the time that needs to be spent before the light-emitting element, which is an organic EL element, starts emitting light is reduced so that it can be driven at high speed to display an image with tones.

Drive circuit to be used in active matrix type light-emitting element array

In a drive circuit to be used for a light-emitting panel formed by a light-emitting element array having a matrix type configuration, wherein a plurality of thin film transistors are arranged for each pixel of the light-emitting element array, a circuit for canceling the offset voltage of a drive transistor is provided by arranging a memory capacitance at the input side of the light-emitting element to instantly accumulate the offset voltage of the drive transistor so as to offset the phenomenon of the voltage fall that is equal to the offset voltage when an image signal s applied at the next timing. With this arrangement, variances in the characteristic of the drive transistors can be cancelled to lessen the variances in the brightness of the light-emitting elements and improve the high speed response of the light-emitting elements.

An image forming apparatus is provided, with which it is possible to reduce the overall size of an apparatus. The image forming apparatus includes an image bearing member including a plurality of switching elements that are arranged in a moving direction and a generatrix direction of the image bearing member, and a latent image forming unit for forming a latent image on the image bearing member, the latent image forming unit including a voltage generating unit for generating a voltage in each switching element in accordance with an image signal.

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Hiratsuka, Japan

Shigeki Kondo