US 12,329,006 B2
White organic light-emitting diode display substrate including switching TFT and light-shielding layer arranged to prevent negative drift
Dongfang Wang, Beijing (CN); Tongshang Su, Beijing (CN); Ming Wang, Beijing (CN); Ce Zhao, Beijing (CN); and Bin Zhou, Beijing (CN)
Assigned to BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Filed by BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Filed on Jul. 18, 2023, as Appl. No. 18/354,218.
Application 18/354,218 is a continuation of application No. 17/812,598, filed on Jul. 14, 2022, granted, now 11,751,456.
Application 17/812,598 is a continuation of application No. 16/338,935, granted, now 11,444,128, issued on Sep. 13, 2022, previously published as PCT/CN2018/106588, filed on Sep. 20, 2018.
Claims priority of application No. 201711338884.1 (CN), filed on Dec. 14, 2017.
Prior Publication US 2023/0363227 A1, Nov. 9, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H10K 59/35 (2023.01); H10K 59/121 (2023.01); H10K 59/126 (2023.01); H10K 102/10 (2023.01)
CPC H10K 59/351 (2023.02) [H10K 59/1213 (2023.02); H10K 59/126 (2023.02); H10K 2102/103 (2023.02)] 12 Claims
OG exemplary drawing
 
1. An organic light-emitting diode (OLED) display substrate, comprising:
a base substrate;
a plurality of pixel units arranged on the base substrate, wherein each pixel unit of the plurality of pixel units comprises a plurality of subpixel units, and at least one of the plurality of subpixel units comprises a switching thin film transistor (TFT);
wherein the OLED display substrate further comprises a light-shielding layer arranged between an OLED and the switching TFT, and an orthogonal projection of the light-shielding layer onto the base substrate completely covers an orthogonal projection of a semiconductor region of the switching TFT onto the base substrate, wherein each pixel unit of the plurality of pixel units comprises a red subpixel unit, a green subpixel unit, a blue subpixel unit and a white subpixel unit, the red subpixel unit comprises a red color filter and a first switching TFT, the green subpixel unit comprises a green color filter and a second switching TFT, the blue subpixel unit comprises a blue color filter and a third switching TFT, the white subpixel unit comprises a fourth switching TFT;
wherein the light-shielding layer covers at least one of an orthogonal projection of a semiconductor region of the first switching TFT in the red subpixel unit onto the base substrate, an orthogonal projection of a semiconductor region of the second switching TFT in the green subpixel unit onto the base substrate, an orthogonal projection of a semiconductor region of the third switching TFT in the blue subpixel unit onto the base substrate, or an orthogonal projection of a semiconductor region of the fourth switching TFT in the white subpixel unit onto the base substrate;
wherein a color filter in a first color and a color filter in a second color are arranged at a region where each pixel unit of the plurality of pixel units is located, the color filter in the first color is configured to filter out a blue light beam, and the color filter in the second color is configured to allow the blue light beam to pass therethrough.