| 摘要 |
PURPOSE:To improve the efficiency of taking a light outside and inject a current into a light emitting layer efficiently in comparison with a conventional constitution. CONSTITUTION:An elctrode 28 is provided so as to face a light emitting layer 24 which is sandwiched between two cladding layers 23 and 25 and a current is injected through the electrode 28 to emit light. The area of the electrode layer 28 is smaller than the area of the light emitting layer 24. A current diffusion layer 27 is provided between the light emitting layer 24 and the electrode 28 and, further, a high resistance insulating layer 26 which has a higher resistance and a smaller area than the current diffusion layer 27 is provided between the light emitting layer 24 and the electrode 28 at the position corresponding to the electrode 28. |
