P‐126: A New Coatable Circular Polarizer for Anti‐Reflection of Flexible AMOLED

Ma, Xiaofeng; Chen, Xiaochuan; Li, Xiao; Wang, Haiyan; Tan, Jifeng; Song, Ping; Shi, Ge; Yang, Yafeng; Lv, Jing; Wang, Dawei

doi:10.1002/sdtp.11998

Cited by 3 publications

(2 citation statements)

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“…Since the polarizer absorbs a large fraction of UV light, this OCA cannot practically be UV post-curable. As future CPs continue to decrease in thickness [19][20][21], with thinner protective layers around the optically active layers, the CP OCA may need to serve a greater role in protecting the polarizer from harmful environmental factors.…”

Section: Optically Clear Adhesive Requirementsmentioning

confidence: 99%

“…Thinner display modules will assist flexibility, so trends in integrating functional components are likely to continue. These may include coated circular polarizers [19][20][21] or color filters integrated with the OLED encapsulation [12]. With thin flexible cover windows, expect adhesives on either side of the OLED display to play a greater role in protecting the module from impact damage.…”

Section: Future Requirements For Optically Clear Adhesives For Oledsmentioning

confidence: 99%

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Optically Clear Adhesives for OLED

Abrahamson¹,

Beagi²,

Salmon³

et al. 2020

Luminescence - OLED Technology and Applications

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Optically clear adhesives (OCA) have been used for more than a decade to bond rigid LCD and AMOLED displays for consumer electronics applications, offering optical, mechanical, and electrical performance benefits. The performance requirements of an OCA to bond cover window, touch sensors, and circular polarizers in a plastic OLED display to bent cover glass or a flexible, foldable OLED display are drastically different from a flat, rigid device. For plastic OLED to bent cover glass bonding, the adhesive needs to be strong enough to resist spring back of the flat, plastic OLED devices. For flexible, foldable OLED displays, the neutral plane needs to be managed during folding keeping strain to a minimum in critical layers of the device (e.g., touch sensor, TFT, TFE), and the OCA cannot deform (or cause other layers to deform) during the folding process. Folding also brings challenges to touch sensors that can no longer use conventional passivation layers. As a result, the OCA will be responsible for preventing corrosion of touch sensor materials such as metal mesh, silver nanowire, carbon nanotube, and graphene. The chapter will discuss OCA performance requirements for rigid, flexible, and foldable OLED bonding.

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Section: Optically Clear Adhesive Requirementsmentioning

confidence: 99%