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Yue Hua Cui, 61801 Berryessa St, Milpitas, CA 95035

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801 Berryessa St, Milpitas, CA 95035    408-9421868   

Austell, GA   

San Jose, CA   

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Us Patents

Patterning In Devices With Organic Light-Emitting Diode Displays And Sensors

US Patent:
2023009, Mar 23, 2023
Filed:
Feb 2, 2021
Appl. No.:
17/802102
Inventors:
- Cupertino CA, US
Meng-Huan Ho - San Jose CA, US
Abbas Jamshidi Roudbari - Saratoga CA, US
Chih Jen Yang - San Jose CA, US
Chin Wei Hsu - Hsinchu, TW
Jae Won Choi - San Jose CA, US
Jean-Pierre S. Guillou - La Jolla CA, US
Ming Xu - Cupertino CA, US
Rui Liu - San Jose CA, US
Yi Qiao - San Jose CA, US
Yu-Wen Liu - Hsinchu, TW
Yuchi Che - Santa Clara CA, US
Yue Cui - Campbell CA, US
International Classification:
H01L 27/32
H01L 51/52
H01L 51/56
Abstract:
An electronic device may include a display and an optical sensor formed underneath the display. A pixel removal region on the display may at least partially overlap with the sensor. The pixel removal region may include a plurality of non-pixel regions each of which is devoid of thin-film transistors. The plurality of non-pixel regions is configured to increase the transmittance of light through the display to the sensor. In addition to removing thin-film transistors in the pixel removal region, additional layers in the display stack-up may be removed. In particular, a cathode layer, polyimide layer, and/or substrate in the display stack-up may be patterned to have an opening in the pixel removal region. A polarizer may be bleached in the pixel removal region for additional transmittance gains. The cathode layer may be removed using laser ablation with a spot laser or blanket illumination.

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