Konica Minolta, Inc.

Kuniaki Shida

Tsukasa Yagi

Kazuyoshi Omata

The objective of the present invention is to provide a display device with excellent display quality, which has a light emitting pattern that is reduced in light blurring. A display device according to the present invention is sequentially provided at least with a transparent substrate, a first layer containing a light scattering body, a second layer that contains a light scattering body at a content ratio lower than that of the first layer, a light blocking layer having an opening pattern, and a light source that emits light in an area equal to or larger than the area of the opening pattern, in this order. This display device is characterized in that the content ratio of the light scattering body in the first layer is within the range of 30-90% by volume, and the thickness of the first layer is within the range of 3-15 &#x3bc;m.

Display device

A method for driving an organic electroluminescent element including a first light-emitting layer and a second light-emitting layer comprises: applying a second current peak value to the second light-emitting layer exhibits a lower luminous efficiency than the first light-emitting layer at a current density of the second current peak value; and applying a first current peak value to the first light-emitting layer, wherein the first current peak value has a higher current density than the second current peak value.

Method for driving organic electroluminescent element

An object of the present invention is to provide an organic EL device that includes an electrode having a light-emitting function and a touch sensing function, an organic electroluminescent module that includes a specific controlling circuit and can contribute to reduction in sizes and thickness and simplified production steps of the device, and a smart device and an illumination device each including the organic electroluminescent module. The organic electroluminescent module of the present invention has a touch sensing function and includes a capacitive touch sensing circuit unit and a light-emitting device driving circuit unit including a light-emitting device driving circuit section for driving an organic electroluminescent panel. The organic electroluminescent panel includes paired opposite plate electrodes therein. The paired electrodes are connected to the light-emitting device driving circuit unit, and one of the paired electrodes is a touch sensing electrode that is connected to the touch sensing circuit unit.

Organic electroluminescence module, smart device, and lighting device

An object of the present invention is to provide an organic EL device that includes an electrode having a light-emitting function and a touch sensing function, an organic electroluminescent module that includes a specific controlling circuit and can contribute to reduction in sizes and thickness and simplified production steps of the device, and a smart device and an illumination device each including the organic electroluminescent module. The organic electroluminescent module of the present invention has a touch sensing function and includes a touch sensing circuit unit and a light-emitting device driving circuit unit including a light-emitting device driving circuit section for driving an organic electroluminescent panel. The organic electroluminescent panel includes paired opposite electrodes therein. The paired electrodes are connected to the light-emitting device driving circuit unit, and one of the paired electrodes is a touch sensing electrode that is connected to the touch sensing circuit unit. The touch sensing circuit unit and the light-emitting device driving circuit unit are connected to independent grounds.

Growing community of inventors

Hino, Japan

Kuniaki Shida