PMOLED, or Passive Matrix OLED, refers to the positioning of the driving electrodes in an OLED display. In this arrangement, the OLED material is sandwiched between an array of horizontal conductors and an array of vertical conductors to create pixels at the intersections.
How Does PMOLED Work?
PMOLED uses a simpler design compared to Active Matrix OLED (AMOLED) displays, which use transistors to separately control each pixel. Instead, PMOLED divides the display into rows and columns, with each row connected to a source driver and each column connected to a gate driver.
When a row needs to be activated, the source driver sends voltage to the appropriate row conductors, while the gate driver sends a pulse to the appropriate column conductors. At the intersection of the row and column conductors, a pixel is created based on the voltage difference.
Benefits of PMOLED
PMOLED displays are easier and cheaper to manufacture compared to AMOLED displays, making them ideal for smaller devices like wearables, MP3 players, and small digital screens. They also have a wider viewing angle and better contrast ratio than LCD displays, providing clearer and brighter images even in direct sunlight.
Is PMOLED better than AMOLED?
It depends on the intended use and application. AMOLED displays offer higher resolution and faster refresh rates, making them suitable for smartphones, VR devices, and gaming monitors. On the other hand, PMOLED displays are more energy-efficient, cheaper to produce, and have a wider viewing angle, making them ideal for wearables, small digital screens, and low-power devices.
What are the disadvantages of PMOLED?
PMOLED displays have limited resolution and color range compared to AMOLED displays, which can affect the quality of images and videos. They also have a shorter lifespan and are more prone to screen burn-in or image retention.
PMOLED is a simpler and cost-effective technology used in OLED displays to create pixels based on the intersection of horizontal and vertical conductors. It’s ideal for smaller screens that require low power consumption and have a wider viewing angle. However, it has its limitations with respect to resolution, color range, and lifespan.