A liquid crystal display screen with a PI alignment layer coated using dynamic spin coating technology

By using dynamic spin coating technology and PID algorithm adjustment, combined with nano-SiO2 particles and SiO2 buffer layer, the problem of non-uniformity of PI alignment layer in traditional coating process is solved, thereby improving the display effect and product quality of LCD screen.

CN224436731UActive Publication Date: 2026-06-30HEYUAN SIBI ELECTRONICS
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HEYUAN SIBI ELECTRONICS
Filing Date
2025-06-05
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Traditional coating processes are susceptible to fluctuations in process parameters, resulting in uneven PI alignment layer coating thickness. This leads to problems such as uneven display depth, residual friction marks, and uneven sealing and rinsing, which in particular reduces product yield and user experience in high-precision display scenarios.

Method used

The PI alignment layer is processed using dynamic spin coating technology, and the doctor blade gap is adjusted by PID algorithm to control the coating uniformity. The coating performance is improved by nano-SiO2 particles, and UV curing and SiO2 buffer layer are used to reduce electrochemical corrosion. Elastic support columns are used to compensate for hot pressing deformation.

Benefits of technology

This achieves uniform coating of the PI alignment layer, avoiding uneven display depth, residual friction marks, and uneven sealing erosion, thus improving product yield and user experience.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224436731U_ABST
    Figure CN224436731U_ABST
Patent Text Reader

Abstract

This utility model discloses a liquid crystal display screen based on dynamic spin coating technology for coating a PI alignment layer. It includes a frame and a display screen body installed inside the frame. The display screen body consists of a glass substrate, two PI layers, and an ITO layer, with the ITO layer located between the two PI layers. The glass substrate consists of a front glass and a bottom glass. The frame consists of an upper frame, connecting pads, and a lower frame. Fastening bolts are screwed to the four corners of the top outer wall of the frame. The liquid crystal display screen based on dynamic spin coating technology for coating a PI alignment layer provided by this utility model effectively avoids problems such as uneven display depth, residual friction marks, and uneven sealing and rinsing.
Need to check novelty before this filing date? Find Prior Art