DELs and Image Receptor Matrix - Video Lesson

Hey, everybody. Welcome to this lesson about the image receptor matrix. We'll be discussing the elements that work together to create this matrix. The digital image receptor is made up of small detector elements we can call Dells. It's important to note that the image receptor matrix is different from the display monitor matrix and that Dells are different from pixels. We'll be discussing those issues in another lesson. Again, Dell stands for detector element. You might also hear them called dexals, depending on the source you're using. Dells are made up of a capture area, a storage capacitor and a TFT gate. The capture area has three layers. The top electrode A sensitive detection layer composed of either amorphous selenium or amorphous silicone and a bottom electrode. So how do Del's work?