P-34: A Peripheral Compensation Scheme for AMOLED with Data Voltage, V<sub>TH</sub>and Aging Information Analogously Added in Pixel Circuit

Wang, Cuicui; Leng, Chuanli; Lam, Hon-Ming; Hu, Zhijin; Liao, Congwei; Meng, Xue; Fan, Jin; Zhou, Tianyu; Yang, Fangfang; Zhang, Shengdong

doi:10.1002/sdtp.10863

Cited by 2 publications

(2 citation statements)

References 10 publications

(20 reference statements)

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“…There are two ways of implementing the external compensation methods. One is to perform the sensing operation before output the driving voltages to the display . This approach requires extra memory to store the sensed data and algorithm or lookup table to decide the driving voltage.…”

Section: Introductionmentioning

confidence: 99%

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An external compensation method for AMOLED using the concept of ramp‐stop

Tai

Lin

2017

J Soc Info Display

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In this paper, we propose an external feedback method to compensate the device variation for active‐matrix organic light‐emitting diode. The pixel data current is controlled by ramping the gate voltage and converted to the sensed voltage Vsense in real time. When Vsense is equal to a preset voltage Vdata, the switching block outputs the low potential to stop the ramping. Therefore, the gate voltage is locked at the value corresponding to the target data current. This circuit is implemented with three thin‐film transistors in the active area and some functional blocks in driver integrated circuit (IC), namely, sentinel block, current‐voltage converting block, and switching block. Unlike the other usual methods of external compensation requiring double number of connections between driver IC and glass, by using the common ramping signal and a simple circuit made on glass, the proposed method can be implemented with only one pin per column.

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Section: Introductionmentioning

confidence: 99%

“…One is to perform the sensing operation before output the driving voltages to the display. [8][9][10] This approach requires extra memory to store the sensed data and algorithm or lookup table to decide the driving voltage. The other way is using feedback mechanisms in closed loop to do the compensation in real time.…”

Section: Introductionmentioning

confidence: 99%