Abstract: A head-up display including a display screen including an array of display pixels arranged in rows and in columns, where the display screen is pivoted, around an axis perpendicular to the screen, by an inclination angle between 10 and 80 degrees, with respect to the position of the display screen for which a group of adjacent activated display pixels of a same row appears to an observer as being directed along the horizontal or vertical direction.

Abstract: The invention relates to a matrix display screen which includes, in sequence: a mounting (50); at least one first metal portion (156); a stack of layers (52, 72, 86, 104) including transistors (TFT1, TFT2); and organic light-emitting diodes (32).

Abstract: The invention concerns an organic light-emitting diode comprising a lower electrode (2) and an upper electrode (8), an electroluminescent organic layer (5), and at least one doped organic layer (3; 7) in contact with one of said electrodes. The invention is characterized in that the doping is carried out using an alkaline-earth element or lanthanide, and the diode is heat-treated at temperature preferably not less than 60° C. for more than one hour. The invention enables the lighting performance of the diode to be considerably improved.

Abstract: The invention relates to a matrix display screen which includes, in sequence: a mounting (50); at least one first metal portion (156); a stack of layers (52, 72, 86, 104) including transistors (TFT1, TFT2); and organic light-emitting diodes (32).

Abstract: A head-up display including a display screen including an array of display pixels arranged in rows and in columns, where the display screen is pivoted, around an axis perpendicular to the screen, by an inclination angle between 10 and 80 degrees, with respect to the position of the display screen for which a group of adjacent activated display pixels of a same row appears to an observer as being directed along the horizontal or vertical direction.

Abstract: The invention concerns an organic light-emitting diode comprising a lower electrode (2) and an upper electrode (8), an electroluminescent organic layer (5), and at least one doped organic layer (3; 7) in contact with one of said electrodes. The invention is characterized in that the doping is carried out using an alkaline-earth element or lanthanide, and the diode is heat-treated at temperature preferably not less than 60° C. for more than one hour. The invention enables the lighting performance of the diode to be considerably improved.

Abstract: The invention concerns a display panel comprising a front faceplate and a rear faceplate providing between them a two-dimensional matrix of zones filled with discharge gas, addressing means for selectively activating pre-selected discharge zones by depositing therein electric charges, and a device for generating microwave electromagnetic radiation adapted to apply through the rear faceplate to the assembly of the display panel discharge zones, a microwave radiation of sufficient intensity to generate plasma discharges solely in the activated discharge zones. Thus, an easy-to-monitor panel with high luminous efficacy is obtained wherein the addressing and maintenance functions are separate.

Abstract: A color two substrate alternating plasma display panel. The panel includes two tiles joined together so as to be opposite each other and defining a space therebetween. The space is filled with gas. One of the tiles has column electrodes which are approximately parallel, separated by a spacing and covered with at least one phosphor region. The other tile has at least one row electrode. The phosphor regions are provided with at least one recess placed at the intersection of a column electrode with the row electrode. A color pixel is formed by neighboring recesses lying within the same row electrode in adjacent phosphor regions. In order to obtain better light efficiency, the distance separating two adjacent recesses lying within adjacent phosphor regions and belonging to the same pixel is greater than the spacing so that space has a thickness greater than that required when two recesses are separated by approximately the spacing.