Display device for reducing chromaticity difference in white color and method for manufacturing the same

A display device, wherein:

• there are provided at least a plurality of transparent conductive films having the same thickness and formed approximately in the same island-like shape on an insulating substrate;
• at least three of said plurality of transparent conductive films are set to one color pixel of different color, and light emitting layers each having different wavelength range are laminated on the island-like transparent conductive films in said one color pixel;
• when said light emitting layers in one color pixel are R, G, and B respectively, that the island-like transparent conductive films are aligned to the light emitting layers R, G, and B are ITOR, ITOG, and ITOB respectively, that a film thickness of each of ITOR, ITOG, and ITOB are dR, dG, and dB respectively, that the wavelength with highest transmissivity of the light emitting layers R, G, and B are λR, λG, and λB respectively, that a refractive index at the wavelength λR of ITOR is nR, a refractive index of ITOG at the wavelength λG is nG, and a refractive index of ITOB at the wavelength λB is nB;
• then, the refractive indices are so arranged that the following relation exists in the optical film thickness of the transparent conductive film determined by a product of refractive index and film thickness:
• nRdR>nGdG>nBdB.

A display device, having pixels of 3 colors of red, green, and blue respectively to constitute color pixels, wherein:

• each of said pixels comprises a first transparent conductive film, a second transparent conductive film, a color filter, and a liquid crystal layer interposed between said first transparent conductive film and said second transparent conductive film;
• wherein the display device is provided with a first insulating substrate with said first transparent conductive film formed thereon, and a second insulating substrate with said second transparent conductive film deposited thereon;
• said first insulating substrate contains a thin-film transistor to perform pixel on-off control for each pixel;
• for each pixel said second insulating substrate has said color filter to allow light with a wavelength to match the color of said pixel to pass;
• and
• said first transparent conductive film is formed in island-like shape for each pixel;
• wherein said first transparent conductive film of island like shape for each pixel has a different film thickness, and has a refractive index for at least two of the color pixels which is different from each other.