Luminance uniformity compensation for OLED panels based on FPGA

Peng Ou; Gang Yang; Quan Jiang; Jun-sheng Yu; Qi-peng Wu; Fu-hai Shang; Wei Yin; Jun Wang; Jian Zhong; Kai-jun Luo

doi:10.1007/s11801-009-9096-5

Optoelectronics Letters ›› 2009, Vol. 5 ›› Issue (5) : 329-332. DOI: 10.1007/s11801-009-9096-5

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Luminance uniformity compensation for OLED panels based on FPGA

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Abstract

Aiming at the problem of luminance uniformity for organic lighting-emitting diode (OLED) panels, a new brightness calculating method based on bilinear interpolation is proposed. The irradiance time of each pixel reaching the same luminance is figured out by Matlab. Adopting the 64×32-pixel, single color and passive matrix OLED panel as adjusting luminance uniformity panel, a new circuit compensating scheme based on FPGA is designed. VHDL is used to make each pixel’s irradiance time in one frame period written in program. The irradiance brightness is controlled by changing its irradiance time, and finally, luminance compensation of the panel is realized. The simulation result indicates that the design is reasonable.

Keywords

Field Programmable Gate Array / Bilinear Interpolation / Frame Period / Compensation Circuit / Electro Luminescence

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Peng Ou, Gang Yang, Quan Jiang, Jun-sheng Yu, Qi-peng Wu, Fu-hai Shang, Wei Yin, Jun Wang, Jian Zhong, Kai-jun Luo. Luminance uniformity compensation for OLED panels based on FPGA. Optoelectronics Letters, 2009, 5(5): 329‒332 https://doi.org/10.1007/s11801-009-9096-5

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