Light sink layer for a thin-film EL display panel
Method of making an electroluminescent display device with islands of light emitting elements
Display means with memory effect comprising thin electroluminescent and photoconductive films
Electroluminescent display device using hydrogenated and carbonated amorphous silicon
Matrix screen, its production process and matrix display means with several tones, controlled on an all or nothing basis and incorporating said screen Patent #: 4924144
ApplicationNo. 508260 filed on 04/11/1990
US Classes:313/505, With electrode matrix313/506, Plural layers313/509, With dielectric layer315/169.3, Electroluminescent device345/76, Electroluminescent345/207Light detection means (e.g., with photodetector)
ExaminersPrimary: Moore, David K.
Assistant: Khanna, Rohini
Attorney, Agent or Firm
Foreign Patent References
International ClassH05B 033/22
Foreign Application Priority Data1989-04-12 FR
AbstractElectroluminescent display screen with a memory and a particular configuration of electrodes. The display screen comprises on a nonconducting substrate a stacked electroluminescent film and a photoconductive film, both of these films being inserted between lower transparent electrodes (12) orientated along a first direction (x) and upper electrodes (22) orientated along a second direction (y) perpendicular to the first direction, the upper and lower electrodes defining at their intersection picture elements (26), the upper electrodes (22) comprising blocks (40) of dimension D along the first direction at the display points electrically interconnected by two access strips (42a, 42b) with a width d with d<D/2, the access strips at a given block being connected by a conductive access bridge (46) parallel to the lower electrodes, the edges of these blocks (40) being situated inside the edges of the lower electrodes.