Display Device Step Compensation Portion for Dead Space and Paste Permeation
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Solution Overview
Problem
Existing display device manufacturing processes face challenges such as dead space between the display driving module and the middle frame, paste permeation into the display driving module, and ineffective permeation of the step compensation paste into recessed portions.
Innovation Solution
A display device design that includes a display module with a display panel, a cover spacer, and a step compensation portion, where the step compensation portion overlaps a recessed portion and is formed by curing a first paste, while an outer structure is formed by curing a second paste, with the step compensation portion being spaced apart from the outer structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the display panel edge portion protrudes beyond the cover spacer edge portion to eliminate dead space, then the manufacturing precision and space utilization improve, but the risk of paste permeation into the display driving module increases
Solution Approach 1:
The step compensation portion acts as an intermediary barrier between the outer structure paste and the display driving module. It is specifically positioned to overlap the recessed portion, creating a protective barrier that prevents paste from permeating into sensitive areas while allowing the display panel to maintain its protruding configuration for dead space elimination.
Solution Approach 2:
The step compensation portion is formed in advance before the outer structure paste is applied. This preliminary action creates a pre-positioned barrier that proactively prevents paste permeation issues before they can occur during the assembly process, rather than attempting to address permeation problems after they arise.
2Productivity
If the step compensation portion is positioned to overlap the recessed portion for effective paste permeation, then the paste application effectiveness improves, but the device complexity increases
Solution Approach 1:
The step compensation portion is not uniformly distributed across the entire display device but is specifically positioned only where needed - overlapping the recessed portion at the boundary between the display driving module and outer structure. This localized approach provides effective paste management only where required, rather than adding complexity throughout the entire device.
3Reliability
If the step compensation portion is spaced apart from the outer structure to prevent paste contamination, then the reliability improves, but the manufacturing precision requirements increase
Solution Approach 1:
The step compensation portion extends beyond the minimum necessary coverage area, creating an overlapping configuration that exceeds the basic requirement of simply filling the recessed portion. This excessive action ensures that even with variations in manufacturing precision, the paste barrier remains effective and maintains adequate spacing from the outer structure to prevent contamination.
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 reduces or eliminates dead space between the display driving module and the middle frame, prevents paste permeation into the display driving module, and ensures effective permeation of the step compensation paste into recessed portions, enhancing manufacturing efficiency and product reliability.
Implementation Method 1
forming a step compensation portion encapsulating a reverse step included in the display module, and forming an outer structure disposed to surround the display module, wherein the step compensation portion is formed by curing a first paste
Implementation Method 2
forming an outer structure disposed to surround the display module, wherein the step compensation portion is formed by curing a first paste, the outer structure is formed by curing a second paste
Data Source
AI summary
A display device including, a display module, the display module including, a display panel, a cover spacer disposed under the display module, and a step compensation portion disposed on the display panel and the cover spacer, and an outer structure surrounding the display module, wherein an edge portion of the display panel protrudes beyond an edge portion of the cover spacer, a recessed portion is disposed at the edge portion of the cover spacer and under the display panel, and the step compensation portion overlaps the recessed portion.