Passive matrix and active matrix OLED Character LCD Module

Passive matrix OLED (PMOLED)OLED modules
The PMOLED with the cathode zone, and the organic layer and the anode zone. An anode tape and a cathode tape perpendicular to each other. The point of intersection of the cathode and the anode to form the pixel, that is, the light emitting parts. External circuit current is applied to the selected cathode tape and the anode straps, so as to determine which pixels emitting, which do not emit light. In addition, the brightness of each pixel, and applying a current proportional to the size.
The PMOLED easy to manufacture, but its power consumption is greater than the other types of OLED This is mainly because it requires an external circuit sake. The PMOLED used the most efficient, suitable for the production of small (2-3 inches diagonal) screen text and icons, such as in mobile phones, handheld computers and MP3 players can often see the kind. Even if there is an external circuit, the power consumption of passive matrix OLED or less than these devices using the LCD.
Active-matrix OLED (AMOLED)
AMOLED having a cathode layer, an organic molecular layer and the anode layer, the anode layer is covered with a thin film transistor (TFT) array to form a matrix. TFT array itself is a circuit that can determine which pixels emitting, thereby determining the composition of the image.
The AMOLED's power consumption is less than in PMOLED, this is because the TFT array electricity required to be less than the external circuit, and thus the AMOLED suitable for large display. The AMOLED also having a higher refresh rate, and adapted to display the video. The best use of AMOLED computer monitors, large-screen TVs and electronic signs or billboards.7 TFT display module