Jx Nippon Oil Energy Corporation

Tokyo Institute of Technology

Won Hoe Koo

Suzushi Nishimura

Hideo Takezoe

Soon Moon Jeong

Takashi Seki

Maki Fukuda

Satoshi Masuyama

Madoka Fukushima

A microlens for an organic EL element includes a cured resin layer having concavities and convexities formed on a surface thereof, wherein when a Fourier-transformed image is obtained by performing two-dimensional fast Fourier transform processing on a concavity and convexity analysis image obtained by analyzing a shape of the concavities and convexities by use of an atomic force microscope, the Fourier-transformed image shows a circular or annular pattern substantially centered at an origin at which an absolute value of wave number is 0 &#x3bc;m, and the circular or annular pattern is present within a region where an absolute value of wave number is within a range of 1 &#x3bc;mor less. The microlens is disposed on a light-emitting surface of the organic EL element.

Microlens for organic EL element, organic EL element using the same, and manufacturing methods thereof

A diffraction grating having a transparent supporting substrate; and a cured resin layer which is stacked on the transparent supporting substrate and which has concavities and convexities formed on a surface thereof, wherein when a Fourier-transformed image is obtained by performing two-dimensional fast Fourier transform processing on a concavity and convexity analysis image obtained by analyzing a shape of the concavities and convexities formed on the surface of the cured resin layer by use of an atomic force microscope, the Fourier-transformed image shows a circular or annular pattern substantially centered at an origin at which an absolute value of wavenumber is 0 &#x3bc;m, and the circular or annular pattern is present within a region where an absolute value of wavenumber is within a range of 10 &#x3bc;mor less.

Diffraction grating, organic EL element using the same, and manufacturing methods thereof

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Meguro-ku, Japan

Won Hoe Koo