Manufacturing method for liquid crystal display panel with high transmittance and display panel thereof

US10976586B2 · kind B2 · utility

Inventors

• Fei Al · Beijing, CN
• Peng Lu · Sunnyvale, US
• Chengzhi LUO · 红钢城街道, CN

Key dates

• Filing date: Mar 14, 2019
• Grant date: Apr 13, 2021
• Expiry date: Sep 6, 2039

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01L21/02274
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A manufacturing method for a liquid crystal display panel is disclosed and includes a step forming a refractive index gradient layer, a step forming a gate electrode insulation layer, a step forming a first interlayer dielectric layer, and a step forming a second interlayer dielectric layer. The step forming a refractive index gradient layer includes depositing a silicon nitride layer on a glass substrate, depositing the refractive index gradient layer on the silicon nitride layer. The refractive index gradient layer is silicon oxide, and includes a lower refractive index decremental layer and a lower refractive index constant layer. A refractive index of the decremental layer gradually decreases along a direction away from the silicon nitride layer, the lower refractive index constant layer is on the lower refractive index decremental layer. A reflection rate between light in film layers can be lowered to improve light transmittance of the display panel.