Method of forming large liquid crystal cells
Orthogonal active-passive array pair matrix display
Transflector for illuminated electrooptic displays
ApplicationNo. 07/060931 filed on 05/27/1987
US Classes:349/68, With plural diverse light sources (e.g., for day and night)313/503, With particular phosphor or electrode material349/114, Dielectric mirror (i.e., in devices excited other than by photoconductive layer) or transflector349/69Electroluminescent light source
ExaminersPrimary: Miller, Stanley D.
Assistant: Thantu, Napoleon
International ClassesH05B 33/26 (20060101)
H05B 33/28 (20060101)
H05B 33/12 (20060101)
H05B 33/20 (20060101)
H05B 33/10 (20060101)
G02F 1/1335 (20060101)
G02F 1/13 (20060101)
AbstractIn an electroluminescent lamp having a phosphor layer disposed between corresponding lamp electrodes adapted to apply an excitation potential to cause the phosphor layer to emit light, a front lamp electrode which, in addition to being light transmissive to radiation from the phosphor layer, consists of a thin layer of light-transmissive binder containing a distribution of discrete particles that are characteristically light-reflective and electrically conductive. The electrode particles provide aggregate diffuse outward reflectance sufficient to serve as a reflector behind an LCD display for ambient light that falls upon the LCD display to illuminate the display under light ambient conditions. Furthermore, the particles in the electrode layer are adapted to contribute to electrical continuity through the layer sufficient to apply excitation to the phosphor layer, and the electrode layer particles have sufficient spaces between them to provide escape-paths for light from the excited phosphor layer to back-illuminate the LCD display under dark ambient conditions. A method of forming the improved electrode, e.g. by shear transfer techniques, is also described. Certain aspects of the invention apply to the function of improved transflective layers, per se.