Side-Edge Display Panel Pads for Narrow Bezel Code Marking
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Solution Overview
Problem
Modern display devices face limitations in reducing the non-display area (bezel size) and enhancing the readability and management of production and distribution information.
Innovation Solution
A display device design featuring a reduced bezel size and an easily readable information code, where the information code is integrated with the pad portions on the lateral side of the display panel, using the same material and layer as the pads, and includes both character and figure codes, allowing for accurate reading without interference from other panel elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a pad portion is formed on the display panel to bond the flexible printed circuit film, then the display device can transmit driving signals, but the non-display area increases and the screen-to-body ratio decreases
Solution Approach 1:
The pad portion is repositioned from the front surface of the display panel to the lateral side edge of the panel. This spatial relocation moves the bonding function to a different dimension (from planar surface to side edge), eliminating the need for pad portions on the display surface and thus reducing the non-display area while maintaining signal transmission capability.
Solution Approach 2:
The display panel structure is segmented into distinct functional zones: the display area, the lateral side edge area for bonding, and the back surface area. By separating the bonding function to the lateral side edge, the display surface remains fully utilized for imaging, improving the screen-to-body ratio.
2Productivity
If production and distribution information is made readable on the display panel, then information management efficiency improves, but the design complexity and processing stages increase
Solution Approach 1:
The information code is integrated with the existing pad portion structure on the lateral side edge. Both the bonding pads and the information code are formed simultaneously using the same material deposition and patterning processes, eliminating the need for separate processing stages while providing both electrical connection and information encoding functions.
Solution Approach 2:
The lateral side edge region serves multiple functions: it provides the bonding interface for the flexible printed circuit film through pad portions, and simultaneously serves as the carrier for the information code that enables production and distribution tracking. This multi-functionality reduces overall device complexity.
3Ease of manufacture
If the information code is disposed on the lateral side of the display panel using the same material and layer as the pads, then processing stages are reduced and costs decrease, but the information code readability may be affected by proximity to pad portions
Solution Approach 1:
The lateral side edge region is divided into functionally distinct zones: pad portions for electrical bonding and an information code region for data encoding. Each zone is optimized for its specific function while sharing the same material layer, ensuring both electrical performance and code readability are maintained.
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.