Flat Display Panel Corner Reinforcement via Substrate Extension
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Solution Overview
Problem
Conventional liquid crystal display panels have a weak structural strength in their peripheral regions, particularly at the corners, which makes them prone to breaking during packaging or drop tests due to the asymmetrical coverage by the substrates.
Innovation Solution
The design incorporates extension regions on the second substrate that cover and adhere to the corner regions of the first substrate, enhancing structural strength without interfering with the connection to external circuits, using rectangular, chamfered, filleted, trapezoidal, semicircular, or irregularly shaped protrusions to reinforce the corners.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the second substrate covers the entire first substrate including peripheral regions, then the structural strength is improved, but the connection to external circuits is interfered with
Solution Approach 1:
The second substrate is designed with different coverage regions: it covers the display region completely but leaves the peripheral region partially exposed. This local differentiation allows the display region to have full structural support while the peripheral region maintains accessibility for external circuit connections.
Solution Approach 2:
The substrate coverage is segmented into two distinct zones: a display region where the second substrate provides full coverage for structural strength, and a peripheral region where the second substrate is recessed to allow external circuit connections. This segmentation resolves the conflict between strength and accessibility.
2Ease of operation
If the peripheral region is left uncovered by the second substrate, then the connection to external circuits is facilitated, but the structural strength deteriorates
Solution Approach 1:
The second substrate is designed in advance with an indentation portion that anticipates the need for both structural support and circuit connection access. This preliminary design configuration ensures that the peripheral region remains accessible for connections while the overall structure maintains adequate strength through the covered display region.
3Area of stationary object
If the first substrate is made larger to provide peripheral region, then the connection area is increased, but the structural strength of peripheral region decreases
Solution Approach 1:
The design applies different quality characteristics to different regions: the display region receives full coverage from the second substrate for maximum structural strength, while the peripheral region has reduced coverage to maintain connection accessibility. This local quality differentiation optimizes both structural integrity and functional accessibility.
Data Source
AI summary
A flat display panel includes a first substrate and a second substrate adhered to the first substrate. The first substrate has a display region, and a peripheral region located on at least one side of the first substrate. The peripheral region includes a driving IC connection region. The second substrate has a main region corresponding to and covering the display region of the first substrate, and at least one extension region protruding from the main region and covering a portion of the peripheral region.