Display panel

US11638386B2 · kind B2 · utility

Assignees

• WUHAN TIANMA MICROELECTRONICS CO., LTD. · CN
• WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH · CN

Inventors

• Yu Xin · Nanhu, CN
• Kang Yang · Nanhu, CN
• Lijing Han · 红钢城街道, CN
• Xian Chen · Shanghai, CN

Key dates

• Filing date: Mar 30, 2021
• Grant date: Apr 25, 2023
• Expiry date: Jun 15, 2041

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K59/65

Abstract

A display panel having a first display region and second display region is provided. The display panel includes a sub-pixel array that includes a plurality of sub-pixels in an array and distributed in the first display region and the second display region. A non-light-emitting region in the second display region has a greater light transmittance than a non-light-emitting region in the first display region. Among sub-pixels emitting a same color of the plurality of sub-pixels in the first display region and the second display region, a width-to-length ratio of a driving transistor in the pixel circuit of a sub-pixel in the second display region is greater than a width-to-length ratio of a driving transistor in the pixel circuit of a sub-pixel in the first display region.