Patent ID: 7675078
Filing Date: 2010-03-09
Classification: H01L

Abstract:
1. A pixel structure, arranged on a substrate, comprising: a control unit arranged on the substrate; an OEL unit arranged on the substrate, the OEL unit comprising a transparent electrode, a light-emitting layer, and a metal electrode, wherein the transparent electrode is electrically connected with the control unit, and the light-emitting layer and the metal electrode are sequentially stacked on the transparent electrode; and a filter structure sandwiched between the substrate and the OEL unit, the filter structure at least comprising a plurality of first and second dielectric layers, the first and second dielectric layers being alternately stacked, and the refractive index of the first dielectric layers being different from that of the second dielectric layers, wherein the filter structure further comprises a third dielectric layer, the third dielectric layer extends below the bottom of the first and second dielectric layers to the control unit, and the third dielectric layer is a part of the control unit, the filter structure further comprising a fourth dielectric layer over the control unit, wherein the fourth dielectric layer extends below the bottom of the first and second dielectric layers and above the third dielectric layer, and the first, second, third, and fourth dielectric layers sandwiched between the OEL unit and the substrate form the filter structure, wherein the total thickness of the first dielectric layer and the second dielectric layer is larger than or equal to the total thickness of the third dielectric layer and the fourth dielectric layer.