Tohoku Pioneer Corporation

Fujitsu Corporation

Fujitsu Component Limited

Kunizo Ogoshi

Isamu Ohshita

Teruichi Watanabe

Yuji Takahashi

Fumihiko Nakazawa

Takashi Katsuki

Toshinao Yuki

Michiko Endo

Satoshi Sato

Masaki Murakata

Gen Suzuki

Teruo Tohma

Satoshi Sasaki

Tamotsu Watanabe

First electrodes partially configuring light-emitting elements are patterned in the form of stripes on a first major surface of a transparent substrate. Next, piezoelectric elements functioning a SAW touch sensor are formed on a second major surface of the transparent substrate. Next, the light-emitting elements forming step of forming light-emitting elements on the first electrodes which are patterned in advance is sequentially executed. After the formation of the piezoelectric elements, since the step of forming the light-emitting elements is executed, the light-emitting elements can be prevented from being damaged by receiving heat in the formation of the piezoelectric elements.

Method of manufacturing display apparatus with SAW touch sensor

An organic electroluminescent display device includes organic electroluminescent films, each containing organic electroluminescent materials and sandwiched by a pair of electrodes, each forming a plurality of light-emitting elements above a substrate. Each pixel of the display device is composed of two different colors light-emitting elements, and the chromaticity of each color is controlled by changing the concentration of organic electroluminescent materials or by adding foreign materials thereto. For example, if the chromaticity of the red light-emitting element is set to a value shifted toward green side, various colors including white can be produced by mixing this red with blue of the blue light-emitting element. Then, the organic electroluminescent display device can produce high-quality quasi-color images by mixing two colors of which chromaticity values are properly controlled. By virtue of a two-color structure, the aperture ratio becomes high and the manufacturing process becomes simple.

Organic electroluminescent display device

There is provided an organic EL display device comprising: an underlying layer, including at least one layer formed of organic materials, formed on a substrate; organic EL elements formed thereon; and each leading electrode from the organic EL element for an electrical interconnection to an electrode of an interconnection object. In the display device, each connecting region is formed by removing the layers formed of organic materials, of the underlying layer, at a location of a thermocompression bonding for the electrical interconnection. This enables a reliable electrical interconnection between the leading electrode and the electrode of the interconnection object, thereby allowing a good display performance of each organic EL element to be kept.

Organic EL display device and method for manufacturing the same

An aging method applied to a display apparatus having light emitting devices arrayed, includes the steps of: setting integral driving time for the light emitting devices based on a property of luminance deterioration of the light emitting devices relative to the integral driving time so that the lowering of luminance per unit time is not larger than a set value; and driving and aging the light emitting devices only for the set integral driving time.

Method for aging display apparatus and electronic equipment using the method

A drive device for a light-emitting display panel, having the more extended light-emitting life of an EL element, is provided. Drive switches SXto SXn select a reverse direction voltage &#x2212;V immediately after starting of scanning to supply the voltage &#x2212;V to all of EL elements in a scanning state. Subsequently, through the switches SXto SXn, constant current sources Ito In are connected to data lines to be controlled for light emitting, and, a forward voltage +V(a voltage equal to or smaller than a light-emitting threshold one) is applied to data lines which do not contribute to light emitting. Thereby, the forward voltage is applied to the EL elements in a scanning state.

Drive device for light-emitting display panel

Growing community of inventors

Yonezawa, Japan

Kunizo Ogoshi