| abstract |
Since the large area LED display has a large number of wiring leads, it has to have a drive circuit for each small display unit, and there is a restriction on the installation place because the casing is enlarged. Inorganic LED elements (410, 411, 412) are mounted on an active matrix substrate provided with a pixel circuit driving substrate (300) in a matrix. Further, the pixel circuit board (300) is mounted on another substrate as in the case of the inorganic LED elements (410, 411, 412). As a result, the number of lead-out wirings for driving the inorganic LED elements (410, 411, 412) can be greatly reduced, and the flexible and lightweight large-size can be easily installed at various locations at low cost. An active matrix LED display can be provided. |