Display Panel Driver Back-Surface Mounting for Narrow Bezel Tiling
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Solution Overview
Problem
Conventional display apparatuses have wide bezels due to the large size of the peripheral region, which is undesirable for space utilization and tiling applications, as it results in unsatisfactory display quality with visible gaps between images.
Innovation Solution
The display apparatus features a narrow bezel design achieved by strategically placing connection wires on the substrate surfaces, allowing the display panel driver to be connected to the second surface of the substrate, thereby reducing the peripheral region size and enabling a tiled display with minimized gaps between images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the display panel driver is disposed at the peripheral region of the display panel, then the driving signal can be applied to the display panel, but the peripheral region becomes substantially large resulting in a wide bezel
Solution Approach 1:
The patent moves the display panel driver from the peripheral region (2D plane) to the back surface of the substrate (3D spatial relocation). Connection wires extend from the peripheral region through the substrate thickness to connect with the driver on the back surface, effectively utilizing the third dimension to resolve the space conflict.
Solution Approach 2:
The connection wires are embedded within the substrate structure, passing through the substrate thickness to connect the peripheral region circuitry with the driver on the back surface. This nesting approach allows the driver to be positioned outside the peripheral region while maintaining electrical connection.
2Ease of manufacture
If the peripheral region is made large to accommodate the display panel driver, then the driver can be connected to the display panel, but the bezel width increases which is undesirable for space utilization and tiling
Solution Approach 1:
The solution relocates the driver to the back surface of the substrate, utilizing the thickness dimension of the substrate to bypass the bezel width constraint. This allows the front surface to maintain a narrow bezel while the driver operates from the rear.
Solution Approach 2:
Connection wires serve as intermediaries that traverse through the substrate to bridge the peripheral region and the back surface where the driver is located. These wires enable electrical connection without requiring the driver to occupy peripheral space on the front surface.
3Area of stationary object
If multiple display apparatuses are tiled together, then larger display area is achieved, but wide bezels result in visible gaps between images reducing display quality
Solution Approach 1:
By moving the driver to the back surface, the front surface of each display panel achieves a uniform narrow bezel width. When multiple panels are tiled, this uniformity ensures that gaps between adjacent panels are minimized and visually imperceptible, maintaining high display quality across the entire tiled area.
Data Source
AI summary
A display apparatus includes a display panel, a display panel driver and a first connection wire. The display panel includes a substrate and a display layer disposed on a first surface of the substrate. The display panel driver applies a driving signal to the display panel. The display panel driver is disposed on a second surface opposite to the first surface of the substrate. The first connection wire is disposed at a first side surface connecting the first and second surfaces of the substrate. The first connection wire connects electrically the display panel with the display panel driver.