US 12,419,180 B2
Optical functional device, functional panel, display device, input/output device, and data processing device
Taisuke Kamada, Niiza (JP); Yasuhiro Niikura, Komae (JP); Daisuke Kubota, Atsugi (JP); Ryo Hatsumi, Hadano (JP); Akio Yamashita, Atsugi (JP); Sachiko Kawakami, Atsugi (JP); and Satoshi Seo, Sagamihara (JP)
Assigned to Semiconductor Energy Laboratory Co., Ltd., Atsugi (JP)
Appl. No. 17/925,628
Filed by Semiconductor Energy Laboratory Co., Ltd., Atsugi (JP)
PCT Filed May 17, 2021, PCT No. PCT/IB2021/054193
§ 371(c)(1), (2) Date Nov. 16, 2022,
PCT Pub. No. WO2021/240291, PCT Pub. Date Dec. 2, 2021.
Claims priority of application No. 2020-093856 (JP), filed on May 29, 2020.
Prior Publication US 2023/0180491 A1, Jun. 8, 2023
Int. Cl. H10K 59/60 (2023.01); G06F 9/30 (2018.01); H10K 30/81 (2023.01); H10K 39/34 (2023.01); H10K 50/125 (2023.01); H10K 59/80 (2023.01)
CPC H10K 59/60 (2023.02) [G06F 9/3001 (2013.01); H10K 30/81 (2023.02); H10K 39/34 (2023.02); H10K 50/125 (2023.02); H10K 59/8792 (2023.02)] 18 Claims
OG exemplary drawing
 
1. An optical functional device comprising:
a light-emitting function;
a photoelectric conversion function;
a first electrode;
a second electrode; and
an optical functional layer,
wherein the light-emitting function converts electrical energy into first light,
wherein the first light has a first emission spectrum,
wherein the first emission spectrum exhibits a maximum peak at a first wavelength,
wherein the maximum peak exhibits a first value,
wherein at a second wavelength, intensity of the first emission spectrum is 80% of the first value,
wherein the photoelectric conversion function has a spectral sensitivity characteristic,
wherein at a third wavelength, the spectral sensitivity characteristic has a maximum sensitivity within a range of 420 to 720 nm inclusive,
wherein at a fourth wavelength, sensitivity of the spectral sensitivity characteristic is 80% of the maximum sensitivity,
wherein the third wavelength is positioned closer to the second wavelength than to the first wavelength,
wherein the fourth wavelength is positioned closer to the first wavelength than to the third wavelength,
wherein the optical functional layer comprises a region interposed between the first electrode and the second electrode,
wherein the optical functional layer comprises a first layer and a second layer,
wherein the first layer emits light comprising the first light,
wherein the second layer comprises a region overlapping with the first layer,
wherein the second layer comprises a light-absorbing material,
wherein the light-absorbing material has a first absorption spectrum, and
wherein the first absorption spectrum has a region overlapping with the spectral sensitivity characteristic.