4_AMOLEDs 3080 Guy Raz

4_AMOLEDs 3080 Guy Raz - AMOLEDs Active Matrix Organic...

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AMOLEDs Active Matrix Organic Light Emitting Diode Guy Raz ECE 3080
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OLED Organic LED The emissive electroluminescent layer is a film of organic compounds This layer of organic semiconductor material is situated between two electrodes Generally transparent
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AMOLED
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AMOLED Mainly used in mobile phones and TVs Lower-power, lower-cost, larger-size available Displays implement a system of the PenTile matrix family sub- pixel matrix schema RG-B-GR RGBG
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Materials for Semiconductor Small molecules Commonly organometallic chelates (i.e. Alq 3 ) Organic molecules that trap highly reactive trace metal cat-ions Bonding the metal ion to an organic molecule Polymers Electroluminescent conductive polymer that emits light when connected to an external voltage Used as a thin film for full-spectrum color displays poly(p-phenylene vinylene) highly ordered crystalline thin film Changing the side chains changes the color
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TFT (thin-film-transistor) The matrix of OLED pixels generate light from an applied voltage to a TFT array This current flow is controlled by two TFTs at each pixel To start and stop the charging of a storage capacitor To provide a voltage source to create a constant current to the pixel Mainly used are: Poly-Si a-Si
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4_AMOLEDs 3080 Guy Raz - AMOLEDs Active Matrix Organic...

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