Patent ID: 9001011
Filing Date: 2015-04-07
Classification: G09G,H01L

Abstract:
1. An electroluminescent display panel comprising: a pixel circuit including: a sampling transistor configured to sample an image data; a storage capacitor configured to retain a voltage depending on the image data; a second transistor configured to control a driving current for an organic EL element according to the image data; and an auxiliary wiring including a reflective material, the auxiliary wiring arranged on a same layer as a first electrode of the organic EL element, wherein the sampling transistor is a thin-film transistor that includes a channel layer and a current terminal, wherein a portion of a metal wiring material above the channel layer is configured to overlap with a channel region of the thin-film transistor, wherein a voltage of the portion of a pattern of the metal wiring material is established for which a maximum voltage applied across the portion of the pattern and the current terminal is set to a voltage value that the sampling transistor does not turn on during a period other than a sampling period, and the voltage value is established by taking into consideration a threshold voltage of the sampling transistor that changes with time, and wherein the portion of the metal wiring material is configured to shield at least a part of light from an adjacent organic EL element and reflected by the auxiliary wiring.