In this paper, we report the novel design and fabrication of OLED (organic light‐emitting diode) Camera‐under panels (CUP) with improved transmittance and imaging quality. We utilized TFT (thin film transistor)‐outside structure and patterned cathode in the CUP region. The diffraction simulation, transmittance test, Point spreading function (PSF) test, and scene photos proved the efficiency of our solution. Remarkable enhancement of imaging performance, which was identical to that of a normal AA‐hole OLED panel, was achieved. The results confirm the effectiveness of our CUP design strategy and also the potential of our design to be commercially used in the industry.

In this study, the film stacks of rollable AMOLED display are analyzed and designed by FEA (finite element analysis). The control for the layer thicknesses and stiffness of film stacks are two of the key designs for rollable AMOLED display. Also, the use of OCA (optically clear adhesives) brings a particular effect to the setting of neutral plane. In the FEA, constitutive model of hyperelasticity is chosen to describe the mechanical behavior of adhesives since the nonlinear elastic behavior and large deformation characteristics of adhesives. A 7.4-inch WQHD prototype rollable AMOLED display has been successfully rolled up more than 15,000 cycles in dynamic at 10mm rolling radius without damages.

AMOLED continues to draw attention for the flat panel display because of its advantages over other displays. Higher resolution, smaller form factor and lower power consumption are three main requirements in the mobile displays, which need faster development and manufacturing capability to meet these requirements for AMOLED displays. In this presentation, Tianma would like to share the latest update to meet the market needs. Moreover, the risks and trade-offs to reach a higher resolution OLED displays with full-screen feature will also be addressed Invited Paper 68-2 / DZ Peng SID 2018 DIGEST • 903 68-2 / DZ Peng Invited Paper 904 • SID 2018 DIGEST Invited Paper 68-2 / DZ Peng SID 2018 DIGEST • 905

As we know, OLED has a short lifetime compared with LCD, due to its material characteristic[1], which leads to a fact that improved performance of lifetime in OLED display , especially vehicle OLED products is one of the most important factors in display market development of OLED. In this paper, a novel algorithm for luminance attenuation in OLED was proposed, using the method of statistical regularity.

This paper introduces a scheme to compensate IR drop in real time based on the real ELVDD in display. The real ELVDD of each row of pixels at the time of charge and discharge is obtained by designing detection circuits on both sides of the display, and the pixel voltage Vdata is adjusted by the detection voltage. In this way, the display problem caused by local and global IR drop can be solved in a direct and effective way.