EP. 46 Aperture ratio Display Glossary.zip
OLED Pixel Structure and Aperture ratio .......... Window Encapsulation Layer EL TFT TFT TFT Glass Substrate Aperture Single-Pixel Side View Cross-Sectional View Aperture ratio The aperture ratio refers to the proportion of a pixel's area through which light can pass or be emitted. This area is called the aperture. For displays of the same size, a higher aperture ratio results in a brighter display. It also improves energy efficiency, as less power is required to achieve the same brightness.
Aperture Comparison by OLED Emission Structure Window Window Glass Substrate Encapsulation Layer TFT EL EL TFT Encapsulation Layer Glass Substrate Bottom-Emission Top-Emission The aperture ratio of an OLED varies depending on its emission method. In a bottom emission, the TFTs and wiring can block part of the emitted light, making it more difficult to achieve a high aperture ratio. In a top-emission, light is emitted away from the TFT layer, allowing for a larger emissive area. This helps increase brightness and extend display lifespan.
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