Consecutive multiline addressing: A scheme for addressing PMOLEDs

Abstract

Consecutive multiline addressing (CMLA) has been developed to increase a PMOLED display's lifetime, resolution, and power efficiency. Mathematically, it decomposes an image matrix into a set of multiline matrices and a residual single-line matrix. The decomposition is lossless and implemented by a combinatorial algorithm allowing small chip size for the logic and high processing speed, e.g., for video applications. The additional memory needed for CMLA is just a fraction of the graphic data memory (GDRAM). The printed-circuit-board (PCB) prototype with a field programmable gate array (FPGA) proves that the CMLA produces images of the same visual quality as the conventional single-line addressing (SLA), while the power efficiency is substantially higher.

Impact of high-resolution matrix backlight on local-dimming performance and its characterization

“…called as mini LED backlight, at a reasonable cost. For a resolution of few hundreds to ten thousand LEDs, the consecutive multiline addressing method [11] can be applied, so that the cost for the LED driver will be limited, too.…”

Shrunk multiline addressing method in a passive‐matrix‐driven liquid powder display

“…The same concept of SSLA is also available for the PMOLED, thereby improv- ing the conventional PM addressing scheme. 9 The aim is to extend the lifetime and to reduce the power consumption of the OLED panel by reducing the peak current in each pixel of the OLED display. The applied current in each pixel can be reduced by extending the update time T SSLA to T PM , because the brightness increases in proportion to the product of the applied current and the addressing time.…”

“…Here, if the i-th vector of an image matrix has n i indefinite elements, there are 2 ni-1 ways to solve the vector. If the size of an image matrix is M × N, all resolution approaches for the image matrix R can be considered as follows: (9) Obviously, it is difficult to examine SMLA for binary data considering all resolution approaches. Therefore, it is necessary to select the basis vector under the condition given below, and to leave indefinite elements as they are.…”

“…7 The multiline addressing method has also been studied as the driving method for a passive-matrix OLED to achieve a longer lifetime by improving the frame-rate. [8][9][10][11] For e-paper, the total updating time is reduced by decreasing the number of scanning lines and fixing the selection time, instead of spreading the selection time of scanning lines as in an STN-LCD or a PMOLED.…”

FrIIDoM: An intelligent driver for automatic configuration in modular display systems

“…This is especially a problem with OLEDs, where the lifetime is strongly dependent on how hard they are driven. This is why an MLA driving scheme is extensively used in PMOLED displays [7]. Several rows are selected at the same time, meaning that each OLED will have to shine less bright (but longer) in order to achieve the desired brightness.…”