US 12,289,976 B2
Display substrate and display device
Puyu Qi, Beijing (CN)
Assigned to Chengdu BOE Optoelectronics Technology Co., Ltd., Sichuan (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
Appl. No. 17/770,265
Filed by Chengdu BOE Optoelectronics Technology Co., Ltd., Sichuan (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
PCT Filed Jun. 15, 2021, PCT No. PCT/CN2021/100054
§ 371(c)(1), (2) Date Apr. 19, 2022,
PCT Pub. No. WO2021/254315, PCT Pub. Date Dec. 23, 2021.
Claims priority of application No. 202010544337.4 (CN), filed on Jun. 15, 2020.
Prior Publication US 2022/0384529 A1, Dec. 1, 2022
Int. Cl. H10K 59/38 (2023.01); H10K 50/86 (2023.01); H10K 59/35 (2023.01)
CPC H10K 59/38 (2023.02) [H10K 50/865 (2023.02); H10K 59/35 (2023.02)] 10 Claims
OG exemplary drawing
 
1. A display substrate, comprising a transparent display region and a non-transparent display region, wherein at least a part of the transparent display region is surrounded by the non-transparent display region, the transparent display region comprises a first sub-pixel array, the first sub-pixel array comprises a red sub-pixel, a green sub-pixel, a blue sub-pixel and a transparent sub-pixel, the non-transparent display region comprises a second sub-pixel array, the second sub-pixel array comprises a red sub-pixel, a green sub-pixel and a blue sub-pixel, and an aperture ratio of the blue sub-pixel in the first sub-pixel array is smaller than an aperture ratio of the blue sub-pixel in the second sub-pixel array;
wherein the display substrate further comprises a back plate and a packaging layer, a light-emitting layer with the first sub-pixel array and the second sub-pixel array is located on the back plate, and a light-emitting side of the light-emitting layer is far away from the back plate; the packaging layer is arranged at the light-emitting side of the light-emitting layer, a plurality of filter units and black matrices are arranged at the light-emitting side of the light-emitting layer, the plurality of filter units and black matrices are located on a side of the packaging layer away from the light-emitting layer, each of the plurality of filter units corresponds to each of the red sub-pixels, the green sub-pixels and the blue sub-pixels in the first sub-pixel array and the second sub-pixel array, each of the plurality of black matrices is arranged between two filter units and overlaps with a part of two filter units, and an orthogonal projection of a part of each of the plurality of filter units that does not overlap with the black matrices onto the light-emitting layer coincides with the corresponding red sub-pixel, the green sub-pixel or the blue sub-pixel in the first sub-pixel array or the second sub-pixel array;
wherein the plurality of filter units comprise red color filter blocks, blue color filter blocks and green color filter blocks corresponding to the red sub-pixels, the blue sub-pixels and the green sub-pixels in the first sub-pixel array and the second sub-pixel array respectively, each of the plurality of filter units corresponds to one of the red color filter block, blue color filter block or green color filter block, and a light transmittance of the blue color filter block in the transparent display region is greater than a light transmittance of the blue color filter block in the non-transparent display region;
wherein an aperture ratio of the red sub-pixel in the first sub-pixel array is the same as an aperture ratio of the red sub-pixel in the second sub-pixel array, an aperture ratio of the green sub-pixel in the first sub-pixel array is the same as an aperture ratio of the green sub-pixel in the second sub-pixel array, a light transmittance of the red color filter block in the transparent display region is the same as a light transmittance of the red color filter block in the non-transparent display region, and a light transmittance of the green color filter block in the transparent display region is the same as a light transmittance of the green color filter block in the non-transparent display region.