Display Panel Hollow Sections for Frame Glue Curing
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Solution Overview
Problem
The existing design of LCD panels with high resolution and high refresh rates faces challenges in maintaining narrow borders due to the requirement for wider clock signal lines with lower resistance impedance, leading to insufficient curing of frame glue, resulting in liquid crystal pollution and poor adhesion.
Innovation Solution
The display panel design includes a frame glue region with hollow sections between metal wires, where the width of these sections near the boundary with the liquid crystal layer is increased to ensure complete curing of the frame glue, using a combination of ultraviolet irradiation and heating to achieve proper adhesion and sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the clock signal line width is increased to reduce resistance impedance, then the heat on wire on array is reduced, but the border width becomes wider and cannot meet narrow border requirements
Solution Approach 1:
The patent applies local quality by making the hollow section width non-uniform along the clock signal line. Specifically, the hollow section width is increased at the boundary region between the frame glue layer and liquid crystal layer, while maintaining smaller width in other regions. This localized variation allows the boundary area to have sufficient curing space for frame glue while other areas maintain narrow profile, thus resolving the contradiction between heat reduction (requiring wider lines) and narrow border requirements.
2Length of stationary object
If the wire spacing is reduced to maintain narrow borders, then the border width is reduced, but the metal hollowing rate decreases causing incomplete curing of frame glue
Solution Approach 1:
The patent implements local quality by varying the hollow section width along the clock signal line based on position. The hollow section width is specifically increased at the boundary region where frame glue curing is critical, while maintaining smaller width in other regions. This creates sufficient curing space at the boundary without increasing overall wire spacing, thus maintaining narrow borders while ensuring complete frame glue curing at critical locations.
Solution Approach 2:
The patent applies preliminary action by pre-designing the hollow section width distribution before frame glue application. The hollow sections are strategically sized and positioned to ensure that when frame glue is applied and cured by ultraviolet light, there is sufficient space for complete curing at the boundary region. This preliminary structural design prevents curing deficiencies before they occur.
3Manufacturing precision
If the hollow section width is increased to ensure frame glue curing, then the curing completeness is improved, but the metal hollowing rate decreases
Solution Approach 1:
The patent resolves this contradiction through local quality by making the hollow section width position-dependent. Instead of uniformly increasing hollow section width throughout the clock signal line (which would significantly reduce metal hollowing rate), the width is increased only at the critical boundary region where frame glue curing is essential. This localized approach ensures curing completeness where needed while minimizing the overall impact on metal hollowing rate.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design ensures full curing of the frame glue, preventing liquid crystal contamination and maintaining the narrow border requirement, making it suitable for mass production while maintaining high resolution and refresh rates.
Implementation Method 1
the frame glue for sealing liquid crystal is not completely cured when cured by ultraviolet light
Implementation Method 2
using a combination of ultraviolet irradiation and heating to achieve proper adhesion and sealing
Data Source
AI summary
The present application provides a display panel and a method for manufacturing the display panel. The display panel includes a driving circuit layer, a liquid crystal layer, and a frame glue layer. The driving circuit layer includes a driving unit sub-layer and a wire sub-layer; the wire sub-layer includes a plurality of metal wires disposed parallel to each other, a hollow section is disposed between any adjacent two metal wires, and in each of the hollow sections, a width of the hollow section near a boundary between the frame glue layer and the liquid crystal layer is greater than or equal to a width of any other hollow sections.