Display Module Adhesive Extension Against Brightness and Greenish Artifacts
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Solution Overview
Problem
The occurrence of brightness and greenish phenomena in the end portion of display panels due to electric charge accumulation and strong electric fields, leading to poor display quality and reduced charging function efficiency.
Innovation Solution
A display module design with a cover member, display panel, cushioning plate, and adhesive layer where the adhesive layer extends outwardly beyond the display panel, using insulating materials to prevent electric charge movement into the panel and facilitate discharge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the adhesive layer is positioned within the boundaries of the display panel, then the structure is compact and manufacturing is simpler, but electric charges accumulate on the side surface of the end portion causing brightness and greenish phenomena
Solution Approach 1:
The adhesive layer serves as an intermediary insulating component between the cover member and the display panel. By extending the adhesive layer beyond the display panel boundaries, it acts as a mediator to prevent electric charge accumulation on the side surface of the end portion, thereby eliminating brightness and greenish phenomena while maintaining overall structural simplicity
Solution Approach 2:
The extended adhesive layer provides preliminary protection against electric charge accumulation before charges can affect the display panel. By positioning the adhesive layer to extend beyond the display panel boundaries, it preemptively blocks the harmful effect of charge accumulation, preventing brightness and greenish phenomena before they occur
2Reliability
If the adhesive layer extends outwardly beyond the display panel, then electric charge accumulation is prevented reducing brightness and greenish phenomena, but the structure becomes more complex
Solution Approach 1:
The adhesive layer performs multiple functions: it provides structural bonding between the cover member and display panel, and simultaneously extends beyond the display panel boundaries to function as an insulating barrier against electric charge accumulation. This multi-functionality resolves the contradiction by achieving improved display quality without adding separate components, thus avoiding increased device complexity
3Productivity
If electric charges are discharged through the ground path, then charging function efficiency is maintained, but charges may still accumulate on the side surface causing display quality issues
Solution Approach 1:
The solution segments the charge management function into two distinct pathways: (1) the ground path for efficient charge discharge to maintain charging function, and (2) the extended adhesive layer as an additional insulating barrier to prevent charge accumulation on the side surface. This segmentation allows both charging efficiency and display quality to be maintained simultaneously
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
Reduces brightness and greenish phenomena by effectively managing electric charge flow, enhancing display quality and maintaining charging function efficiency.
Implementation Method 1
an adhesive layer between the cover member and the display panel, wherein an end portion of the adhesive layer is positioned more outwardly toward the end portion of the cover member than an end portion of the display panel
Implementation Method 2
an adhesive layer between the cover member and the display panel, wherein an end portion of the adhesive layer is positioned more outwardly toward the end portion of the cover member than an end portion of the display panel
Data Source
AI summary
A display module and a display device are provided. The display module according to an exemplary embodiment of the present disclosure may include a cover member, a display panel disposed a surface of the cover member, a cushioning plate on a surface of the display panel, and an adhesive layer between the cover member and the display panel. An end portion of the adhesive layer may be positioned more outwardly toward an end of the cover member than an end portion of the display panel.