US 12,094,384 B2
Display panel and display device with reduced charge accumulation in semiconductor layer
Zhiyong Xiong, Shanghai (CN); Yaolin Wang, Shanghai (CN); and Rui Ding, Shanghai (CN)
Assigned to Wuhan Tianma Micro-Electronics Co., Ltd., Wuhan (CN); and Wuhan Tianma Micro-Electronics Co., Ltd. Shanghai Branch, Shanghai (CN)
Filed by Wuhan Tianma Micro-Electronics Co., Ltd., Wuhan (CN); and Wuhan Tianma Micro-Electronics Co., Ltd. Shanghai Branch, Shanghai (CN)
Filed on Jun. 1, 2023, as Appl. No. 18/204,583.
Application 18/204,583 is a continuation of application No. 17/193,881, filed on Mar. 5, 2021, granted, now 11,699,373.
Claims priority of application No. 202011603100.5 (CN), filed on Dec. 29, 2020.
Prior Publication US 2023/0306886 A1, Sep. 28, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G09G 3/20 (2006.01); G09F 9/30 (2006.01); H01L 27/12 (2006.01)
CPC G09G 3/20 (2013.01) [G09F 9/301 (2013.01); G09G 2300/0426 (2013.01); G09G 2330/028 (2013.01); H01L 27/1218 (2013.01); H01L 27/124 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A display panel, having a display region and a frame region outside the display region wherein the display region includes a plurality of pixel circuits, the display panel comprising:
a base substrate;
a buffer layer on a side of the base substrate, wherein the buffer layer includes an a-Si layer;
a semiconductor layer on a side of the buffer layer away from the base substrate;
a power signal layer on a side of the semiconductor layer away from the base substrate, wherein the power signal layer includes a plurality of first power voltage lines in the display region, and one first power voltage line of the plurality of first power voltage lines are electrically connected to a corresponding pixel circuit of the plurality of pixel circuits; and
an auxiliary circuit layer arranged on a side of the a-Si layer away from the power signal layer and including a plurality of auxiliary electrode lines overlapping the plurality of first power voltage lines along a direction perpendicular to a plane of the display panel, to allow an electric field to be generated in an overlapped region of the auxiliary electrode lines and the first power voltage lines.