| 摘要 |
<P>PROBLEM TO BE SOLVED: To achieve improvement of a yield rate of a display apparatus by including a pixel circuit which can make a dark spot, from which light is not emitted, less conspicuous in an organic EL display apparatus. <P>SOLUTION: An existing one pixel is divided into a plurality of regions, and an organic EL element 127_k is provided in each of the plurality of regions. The organic EL element 127_k is connected to the source of a driving transistor 121 while interposing a test transistor 128_k which can be controlled between on and off for the organic EL element 127_k. When detecting the dark spot, all the test transistors 128_k are successively turned on from an off-state, so as to specify the presence or absence of the dark spot and the position of the dark spot. By radiating an energy beam such as a laser beam upon a wiring on an anode side that serves as a current channel of a driving current Ids to a dark spot element, the wiring is fused to electrically isolate the dark spot element from the normal pixel circuits P, thereby carrying out repair of the dark spot. If the other normal elements are used for display, an effect that the dark spot does not apparently look as a spot defect can be enjoyed, and one pixel can be prevented from fully becoming a dark spot element, and therefore, the yield in fabrication can be improved. <P>COPYRIGHT: (C)2009,JPO&INPIT |
