Display device using organic electroluminescent elements

A heads-up display (HUD) system comprising:

• a) an organic electroluminescent (EL) display configured to emit an image, the organic EL display including:
• 1) a luminescent panel containing a plurality of organic electroluminescent elements, each of the organic electroluminescent elements including:
• a glass substrate,
• a dielectric mirror formed on the glass substrate,
• a hole transport layer,
• a transparent electrode disposed between the dielectric mirror and the hole transport layer,
• a luminous layer formed on the hole transport layer, and
• a metal electrode formed on the luminous layer;
• and
• 2) a driver configured to drive the plurality of organic electroluminescent elements on the luminescent panel;
• and
• b) a mirror configured to reflect the image from the organic EL display onto a windshield.

A display device comprising:

• a) a luminescent panel having a plurality of organic electroluminescent elements arranged in a matrix formation, wherein each of said plurality of organic electroluminescent elements includes:
• a dielectric mirror,
• a transparent electrode formed on said dielectric mirror,
• a plurality of organic layers including a luminous layer, formed on said transparent electrode, and
• a metal electrode formed on said plurality of organic layers;
• wherein the dielectric mirror and the metal electrode constitute a micro-optical resonator that causes light of a given wavelength to resonate, and are spaced apart by about half the given wavelength to about one full given wavelength of the light that is resonated;
• and
• b) a driver for driving said electroluminescent elements on said luminescent panel.