Display Panel Side Surface Pads with Tapered Connection Lines
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Solution Overview
Problem
Existing display devices face limitations in reducing the bezel area due to the presence of a driving circuit board, which occupies non-display areas and restricts the minimization of the non-display region.
Innovation Solution
A display panel design featuring connection lines on the non-display area extending to the side surface with pads, where the connection lines have a wider first area and a narrower second area matching the pad width, allowing for a reduced bezel area and improved manufacturing reliability through precise laser formation of these components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a driving circuit board is disposed on the non-display area, then the display device can be driven, but the bezel area cannot be reduced
Solution Approach 1:
The connection lines extend from the non-display area to the side surface of the base layer, transitioning from a planar two-dimensional layout to a three-dimensional structure. This allows the driving circuit board to be positioned on the side surface rather than occupying the non-display area, thereby reducing the bezel area while maintaining the driving function.
Solution Approach 2:
The connection lines are divided into two areas: a first area on the non-display area and a second area on the side surface. This segmentation allows the connection function to be distributed across different spatial locations, enabling the driving circuit board to be placed on the side surface without increasing the bezel area.
2Manufacturing precision
If the connection lines have a narrow second area matching pad width, then manufacturing precision is improved, but the connection line width is reduced
Solution Approach 1:
The connection lines have different widths in different areas: the first area has a wider width for robust electrical connection, while the second area has a narrower width that matches the pad width for precise alignment. This local differentiation of quality allows the connection lines to satisfy both manufacturing precision requirements and electrical connection requirements.
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 design effectively minimizes the bezel area and enhances the reliability of the display device by ensuring precise electrical connections and preventing shorts between the connection lines and pads, while maintaining efficient manufacturing processes.
Implementation Method 1
forming a plurality of second connection lines and a plurality of pads by irradiating the plurality of first connection lines and the metal plate with a laser, respectively
Data Source
AI summary
A display device includes a first substrate and a second substrate, and the first substrate includes a plurality of connection lines disposed to extend to an end of the first substrate and a plurality of pads disposed on a side surface of the first substrate and electrically connected to the plurality of connection lines, respectively. Each of the plurality of connection lines includes a first area and a second area extending from the first area, the first area has a width greater than a width of the second area, and the width of the second area is substantially the same as a width of each of the plurality of pads.