公开(公告)号：US10535840B2

公开(公告)日：2020-01-14

申请号：US16167391

申请日：2018-10-22

申请人： Apple Inc.

发明人： Chieh-Wei Chen ,  Ting-Yi Cho

IPC分类号： H01L51/52 ,  H01L27/32 ,  H01L27/12 ,  H01L29/417 ,  H01L29/786

摘要： A display may have an array of pixels. Each pixel may have a light-emitting diode such as an organic light-emitting diode. The organic light-emitting diodes may each have a reflective electrode such as a metal anode and a partially reflective electrode such as a metal cathode. Emissive material may be formed between the electrodes. The electrodes of each organic light-emitting diode may form an optical cavity. A wrinkled layer may be formed over the optical cavity to reduce sensitivity to process variations associated with forming encapsulation structures for the display. The wrinkled layer may include annealed organic layers. The organic layers may wrinkle during an annealing process at an annealing temperature. The annealed organic layers may include a first organic layer with a glass transition temperature below the annealing temperature and a second organic layer with a glass transition temperature above the annealing temperature.

公开(公告)号：US20190237701A1

公开(公告)日：2019-08-01

申请号：US16167391

申请日：2018-10-22

申请人： Apple Inc.

发明人： Chieh-Wei Chen ,  Ting-Yi Cho

IPC分类号： H01L51/52 ,  H01L27/32 ,  H01L27/12

摘要： A display may have an array of pixels. Each pixel may have a light-emitting diode such as an organic light-emitting diode. The organic light-emitting diodes may each have a reflective electrode such as a metal anode and a partially reflective electrode such as a metal cathode. Emissive material may be formed between the electrodes. The electrodes of each organic light-emitting diode may form an optical cavity. A wrinkled layer may be formed over the optical cavity to reduce sensitivity to process variations associated with forming encapsulation structures for the display. The wrinkled layer may include annealed organic layers. The organic layers may wrinkle during an annealing process at an annealing temperature. The annealed organic layers may include a first organic layer with a glass transition temperature below the annealing temperature and a second organic layer with a glass transition temperature above the annealing temperature.