NOVELTY - The device has a partially transparent photovoltaic surface (10) such as pane, and a support such as LCD, for images, where the partially transparent photovoltaic surface is composed of a set of zones, and a set of opaque photovoltaic zones (11) is placed according to a regular pattern. The images are provided with a set of pixels (Px). The photovoltaic zones are dimensioned and placed with regard to the pixels such that the pixels that are covered by photovoltaic zones are covered by a covering that is virtually identical in position with regard to the photovoltaic surface.    USE - Photovoltaic device for use on a screen (claimed) i.e. electronic screen such as emissive screen such as LCD type screen, reflective screen such as standard electronic paper, color screen and monochromic screen, of an electronic device (all claimed) i.e. mobile phone. Can also be used for a computer, GPS browser, watch, TV set, and advertising display.    ADVANTAGE - The photovoltaic zones are dimensioned and placed with regard to the pixels such that the pixels that are covered by photovoltaic zones are covered by the covering that is virtually identical in position with regard to the photovoltaic surface, thus minimizing visual degradation of images by the photovoltaic elements, and hence improving visual quality of images. The surface of the photovoltaic elements positioned in front of the images is made denser, while limiting degradation of transparency and/or quality of images. The total cover of the photovoltaic bands remains identical for three primary colors of the screen, thus avoiding deterioration of the colors of images even in the event of visualization of the screen under different angles. The device is not dependent on the screen technology.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a screen.    DESCRIPTION OF DRAWING(S) - The drawing shows an exploded perspective view of a photovoltaic device revealing dimensions and relative positioning of pixels of images and photovoltaic bands superimposed on certain zones of images.    Distance between parallel lines (Dp)    Pixels (Px)    Partially transparent photovoltaic surface (10)    Opaque photovoltaic zones (11)    Pitches (15, 16)