Tohoku Pioneer Corporation

Pioneer Corporation

Shuichi Seki

Katsuhiro Kanauchi

Hiroki Tan

Shinsuke Tanaka

Masaki Murakata

Shigehiro Umetsu

Norikazu Mito

Katsuhiro Kanauchu

A substrate () includes a resin material. A first stacked film () is configured by laminating multiple layers and is formed on a first surface () of the substrate (). A light-emitting unit () is formed over the first stacked film () and includes an organic layer. A second stacked film () is configured by laminating multiple layers and covers the light-emitting unit (). A third stacked film () is configured by laminating multiple layers and is formed on a second surface () of the substrate (). The third stacked film () is the same stacked film as the first stacked film (), and the fourth stacked film () is the same stacked film as the second stacked film ().

Light-emitting device with a sealing film

A first luminous body is formed on a substrate and is linear. A second luminous body is also formed on the substrate and is linear. The second luminous body extends in parallel with the first luminous body. A first anode and a first cathode are formed on the substrate, and supply electric power to the first luminous body. A second anode and a second cathode are also formed on the substrate, and supply electric power to the second luminous body. The first anode and the first cathode extend in parallel with each other, and the second anode and the second cathode extend in parallel with each other. In a range overlapping with the first luminous body when seen in a plan view, the first anode is not connected to the second anode, and the first cathode is not connected to the second cathode.

Light emitting apparatus having first luminous body and second luminous body

Light-emitting device with stacked layers

A light-emitting device () includes a first light-emitting region () and a second light-emitting region (). The first light-emitting region () emits a light ray having a first color by making a first light-emitting layer group including at least two or more kinds of light-emitting layers emit light. In addition, the second light-emitting region () emits a light ray having the first color (for example, daylight color, natural white color, white color, warm white color, or incandescent color) by making a second light-emitting layer group including at least two or more kinds of light-emitting layers emit light. In addition, at least one kind of light-emitting layer included in the second light-emitting layer group emits a light ray having a different spectrum peak from all of the light-emitting layers included in the first light-emitting layer group. Therefore, the color-rendering properties of light emitted from the light-emitting device () are improved.

Light-emitting device

A light-emitting device () includes a first light-emitting region () and a second light-emitting region (). The first light-emitting region () emits a light ray having a first color by making a first light-emitting layer group including at least two or more kinds of light-emitting layers emit light. In addition, the second light-emitting region () emits alight ray having the first color (for example, daylight color, natural white color, white color, warm white color, or incandescent color) by making a second light-emitting layer group including at least two or more kinds of light-emitting layers emit light. In addition, at least one kind of light-emitting layer included in the second light-emitting layer group emits a light ray having a different spectrum peak from all of the light-emitting layers included in the first light-emitting layer group. Therefore, the color-rendering properties of light emitted from the light-emitting device () are improved.

An inputted picture signal is stored in an image memory into which a picture signal for at least one frame period can be written, while rewriting the memory. At a plurality of timings within one frame period, an average brightness calculation unit calculates an average brightness from the picture signal written into the image memory, and a brightness control unit performs brightness control of the picture signal read from the image memory based on the calculated average brightness.

Apparatus and method for controlling display brightness in an image display device

An apparatus for driving a self-luminescent display panel is provided with a plurality of luminescent elementsthat are arranged at intersection positions of a plurality of data lines and a plurality of scanning lines. One frame period is time-divided into N subframe periods (N is a positive integer). A gradation display is set by an accumulated sum of one or plural lighting control periods. The apparatus is provided with first gradation control means () for lighting at least two other subframe periods at a brightness level a in addition to subframe periods lit at a brightness level a&#x2212;1, assuming that a is an integer satisfying 0&#x3c;a&#x3c;N.

Apparatus and method for driving self-luminescent display panel

The present invention is to provide a dot matrix type display device by self light emitting elements in which a display burning phenomenon can be prevented from occurring. With the dot matrix type display device according to the present invention, in the display device in which a plurality of self light emitting elements are arranged in a dot matrix pattern, one or more icons, pictures, letters/characters, and the like are displayed at least on a part of a display area of the display device. The display origin of said one or more icons, pictures, letters/characters, and the like are moved at least one dot or more and displayed by movement display means one after another.

Dot matrix type display device and information equipment employing the same

A correction voltage retaining capacitor C, a correction voltage write transistor Tr, and a switching transistor Trare added to a pixel structure of an SES drive method provided with an organic EL element Eas a light emitting element, a light emission drive transistor Tr, a data write transistor Tr, and an erase transistor Trwhich can erase electrical charges in a light emission maintaining capacitor C. With the ON operation of the erase transistor Tr, the correction voltage write transistor Tris turned on, and the switching transistor Tris turned off. In this state, the threshold voltage (Vth) of the light emission drive transistor Tris written in the correction voltage retaining capacitor C. When pixels are lit, by a gate-to-source voltage obtained by adding the threshold voltage written in the correction voltage retaining capacitor Cto a data voltage written in the light emission maintaining capacitor C, drain current of the light emission drive transistor Trflows. Thus, among respective pixels, a lighting operation is performed in a state in which variations of light emission intensities caused by variations of threshold voltages of the light emission drive transistor Trare restrained.

Light emitting display device, electronic equipment into which the same device is loaded, and drive method of the light emitting display device

In a self light emitting display device of the present invention, a first electrodefor example formed of a thin film of ITO is formed in a striped pattern on a glass substrate, and a film of a light emission functional layeris formed thereon. A metallic second electrodeis formed on the light emission functional layer, and a light transmitting sealing memberfor example formed of a glass material is superimposed on the second electrode. Aperturesfor allowing image light from the light emission functional layerto pass through are formed on a part of the second electrode, a first light emitting area Lis formed in the glass substrateside, and a second light emitting area Lis formed in the sealing memberside. As a result, display images can be visually recognized on both front and rear surfaces.

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Yonezawa, Japan

Shuichi Seki