US 12,218,145 B2
Display panel and display device
Qingjun Lai, Xiamen (CN); Yihua Zhu, Xiamen (CN); Yong Yuan, Xiamen (CN); Ping An, Xiamen (CN); and Zhaokeng Cao, Xiamen (CN)
Assigned to Xiamen Tianma Micro-Electronics Co., Ltd., Xiamen (CN)
Filed by Xiamen Tianma Micro-Electronics Co., Ltd., Xiamen (CN)
Filed on Oct. 27, 2023, as Appl. No. 18/384,565.
Application 18/384,565 is a continuation of application No. 17/452,969, filed on Oct. 29, 2021, granted, now 11,830,882.
Claims priority of application No. 202011612371.7 (CN), filed on Dec. 30, 2020.
Prior Publication US 2024/0055437 A1, Feb. 15, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H01L 27/12 (2006.01); G09G 3/3225 (2016.01); H10K 59/121 (2023.01)
CPC H01L 27/1237 (2013.01) [G09G 3/3225 (2013.01); H01L 27/1251 (2013.01); G09G 2300/0426 (2013.01); G09G 2300/0465 (2013.01); G09G 2300/0814 (2013.01); G09G 2300/0842 (2013.01); H01L 27/1225 (2013.01); H10K 59/1213 (2023.02)] 19 Claims
OG exemplary drawing
 
1. A display panel, comprising:
a base substrate;
a first transistor and a second transistor; wherein:
the first transistor and the second transistor are formed on the base substrate; the first transistor includes a first active layer, a first gate electrode, a first source electrode, and a first drain electrode; the first active layer includes silicon; the second transistor includes a second active layer, a second gate electrode, a second source electrode, and a second drain electrode; and the second active layer includes an oxide semiconductor;
a length of a channel region of the first transistor is L1; along a direction perpendicular to the base substrate, a distance between the first gate electrode and the first active layer is D1; and a first area S1=L1×D1; and
a length of a channel region of the second transistor is L2; along the direction perpendicular to the base substrate, a distance between the second gate electrode and the second active layer is D2; and a second area S2-L2×D2, wherein S1<S2; and
a pixel circuit and a drive circuit providing a drive signal for the pixel circuit, wherein the second transistor is included in the pixel circuit, and the first transistor is included in the pixel circuit, the first transistor is a drive transistor of the pixel circuit, and the second transistor is a switch transistor of the pixel circuit.