Lateral Display Panel Code Layout for Narrow-Bezel Identification
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Solution Overview
Problem
Modern display devices face challenges in reducing the non-display area, specifically the bezel size, and efficiently managing information such as ID, manufacturing date, and defect history for each device during production and distribution.
Innovation Solution
A display device design featuring a bezel with a reduced size and an easily readable information code, where the information code is integrated on the lateral side of the display panel, sharing the same material and layer as the pad portions, and includes both character and figure codes, allowing for direct contact with the substrates and edge members, and is readable without interference from other elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pad portion is formed on the display panel to bond the flexible printed circuit film, then the display device can be driven properly, but the non-display area increases and the screen-to-body ratio decreases
Solution Approach 1:
The pad portion is relocated from the upper surface of the display panel to the lateral side edge. This dimensional transition from 2D surface mounting to 1D edge mounting reduces the footprint on the display area while maintaining the bonding function for the flexible printed circuit film.
Solution Approach 2:
The display panel edge is segmented into functional zones: the first pad portion for electrical bonding, the information code for identification, and the second pad portion for additional bonding. This segmentation allows efficient use of the lateral edge space without interfering with the display area.
2Loss of information
If information is displayed on the screen area, then information is readable, but the display area is reduced and the screen-to-body ratio decreases
Solution Approach 1:
The information code is positioned on the lateral side edge of the display panel rather than on the front display surface. This relocates information from the 2D display plane to the 1D lateral edge, preserving the full display area while maintaining information accessibility.
Solution Approach 2:
Instead of displaying information directly on the screen, the patent uses a coded representation (barcodes, QR codes, or character codes) that can be read optically. This copied representation consumes minimal space on the lateral edge while conveying the same information that would otherwise require significant screen real estate.
3Area of stationary object
If the information code is disposed on the lateral side of the display panel, then the information is readable without occupying display area, but the manufacturing process becomes more complex
Solution Approach 1:
The information code is integrated with the pad portions on the same lateral side of the display panel. Both the pad portions and information code share the same bonding substrate and are positioned in close proximity, allowing them to be manufactured together in a single process flow rather than as separate additions.
Solution Approach 2:
The lateral side edge of the display panel serves multiple functions: it provides the first and second pad portions for electrical bonding and simultaneously hosts the information code for identification. This multi-functional use of the lateral edge simplifies the overall structure by eliminating the need for separate mounting areas.
Data Source
AI summary
A display device according to an embodiment includes: a display panel; a first pad portion disposed on a lateral side of the display panel; and an information code disposed on the lateral side of the display panel.