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AssigneeKoninklijke Philips Electronics N.V.
InventorsGerardus Petrus Karman, Marc Wilhelmus Gijsbert Ponjee, Frank Anton Van Abeelen
Estimating the term…
A multi view display comprising a light emitting element having an optical cavity formed by a first and a second reflecting layer, at least said second reflecting layer being semi-transparent, and a light emitting layer arranged between said reflecting layers, wherein said optical cavity is designed so that light emitted in at least two preferred viewing directions has a higher intensity than light emitted in other directions. The invention is based on interference phenomena in the optical cavity, making it possible to realize a light emitting element that intrinsically emits more light in the preferential viewing directions than in other directions. This emission profile makes the light emitting element very useful in a multi view display, reducing the problems of cross talk.
A multi view display comprising a light emitting element,
A multi view display according to any one of the preceding claims, wherein said light emitting element is an organic light emitting diode (OLED).
A multi view display according to any one of the preceding claims, wherein the optical distance d between the reflecting surfaces, the dominant wavelength λ of the emitted light, the phase shifts φ1 and φ2 resulting from reflection in the first and second reflecting layers, the internal propagation angle θ′view corresponding to the viewing angle θview, and an integer M approximately satisfy:
A multi view display comprising a light emitting element and an asymmetric diffuser arranged between the light emitting element and a viewer.
Dependencies are inferred from the claim text.