US 12,250,837 B2
Pixel structure, array substrate and fabrication method thereof
Yang Pu, Shenzhen (CN); and Rongrong Li, Shenzhen (CN)
Assigned to HKC CORPORATION LIMITED, Shenzhen (CN)
Filed by HKC CORPORATION LIMITED, Shenzhen (CN)
Filed on Dec. 13, 2022, as Appl. No. 18/065,133.
Claims priority of application No. 202210463909.5 (CN), filed on Apr. 29, 2022.
Prior Publication US 2023/0352490 A1, Nov. 2, 2023
Int. Cl. G02F 1/1362 (2006.01); G02F 1/1368 (2006.01); H10D 86/01 (2025.01); H10D 86/40 (2025.01); H10D 86/60 (2025.01)
CPC H10D 86/60 (2025.01) [G02F 1/136286 (2013.01); G02F 1/1368 (2013.01); H10D 86/0221 (2025.01); H10D 86/423 (2025.01)] 14 Claims
OG exemplary drawing
 
1. A pixel structure, comprising:
a gate electrode disposed on an upper surface of a base substrate;
a gate insulation layer covering the gate electrode, and the upper surface of the base substrate excluding the gate electrode;
a source electrode, an active region, a drain electrode, a first doped region and a secondary electrode metal layer which are sequentially disposed on an upper surface of the gate insulation layer in a transverse direction parallel to the base substrate; wherein the active region is arranged in a region on an upper surface of the gate electrode;
two second doped regions arranged at two ends of an upper surface of the active region, wherein one of the second doped regions arranged at one end of the upper surface of the active region is connected to the source electrode, the other one of the second doped regions arranged at the other end of the upper surface of the active region is connected to the drain electrode, and a doping concentration of the first doped region is less than a doping concentration of each of the second doped regions; and
a passivation layer covering the source electrode, a portion of the active region exposed to the second doped regions, the two second doped regions, the drain electrode, the first doped region and the secondary electrode metal layer; wherein the passivation layer is provided with a primary pixel electrode and a secondary pixel electrode disposed thereon, the primary pixel electrode is connected to the drain electrode, and the secondary pixel electrode is connected to the secondary electrode metal layer.