Coating Window Structure for Bend-Resistant Display Panels
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Solution Overview
Problem
Current display device manufacturing processes, particularly those involving lamination, are complex and costly, and can lead to bending issues due to contraction and expansion of resin materials, which affects the integrity of the display panel and visibility of components like driving chips.
Innovation Solution
A display device with a coating window featuring a light-blocking layer as a rigid substrate, which includes specific areas with protruding side surfaces to cover the optical layer and driving chip areas, and a simplified manufacturing method that omits lamination by using jigs and resin material application to form a coating window that aligns with the light-blocking layer's side surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a lamination process is used to attach the window to the display panel, then the window can be securely attached, but the manufacturing process becomes complex and costly
Solution Approach 1:
The patent merges the window attachment process with the existing display panel manufacturing process. The window is attached during the same manufacturing sequence as the display panel components, eliminating the need for separate lamination operations and reducing overall process complexity while maintaining secure attachment
Solution Approach 2:
The window is prepared and positioned in advance during the display panel manufacturing process, before final assembly. This preliminary attachment action prevents the need for subsequent lamination steps, simplifying the manufacturing process while ensuring proper window positioning and secure attachment
2Area of stationary object
If resin material is applied extensively to cover the display panel, then complete coverage is achieved, but bending issues occur due to contraction and expansion
Solution Approach 1:
The patent applies resin material selectively only in the non-display area where the coating window is needed, rather than across the entire display panel. This localized application provides sufficient coverage for the window while minimizing the total resin volume, thereby reducing contraction and expansion effects that cause bending
Solution Approach 2:
The patent uses a controlled amount of resin material that is sufficient for the coating window function but deliberately limited compared to full-panel coverage. This partial action approach achieves the necessary coverage while avoiding excessive resin that would cause significant bending issues
3Quantity of substance
If the resin material flows freely during curing, then complete filling is achieved, but sensitive areas like driving chips become visible
Solution Approach 1:
The patent divides the resin application area into distinct zones: a first resin application area in the non-display area and a second resin application area that is spaced apart from the driving chip. This segmentation ensures resin fills the coating window area while preventing flow into zones where driving chips are located, avoiding visibility issues
Solution Approach 2:
The patent introduces a light-blocking layer as an intermediary structure between the resin material and the driving chip area. This layer acts as a barrier that prevents resin from flowing into sensitive areas while allowing the coating window to be properly formed in the non-display area
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 approach reduces manufacturing costs, minimizes bending phenomena, and prevents external visibility of sensitive areas by ensuring the resin material does not flow to critical parts of the display panel, thereby enhancing the structural integrity and appearance of the display device.
Implementation Method 1
curing the resin material to form a coating window
Data Source
AI summary
A display device includes a display panel including a display area and a non-display area defined adjacent to the display area, an optical layer disposed on the display panel, a light-blocking layer disposed on the optical layer and including at least one side surface protruding further than a side surface of the optical layer in a cross-section, and a coating window disposed on the light-blocking layer and including a resin material.