Pixel Array Module Backside Routing Aperture Ratio
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Solution Overview
Problem
Conventional flat display apparatuses, such as liquid crystal display panels, suffer from reduced aperture ratio due to the placement of scan lines and data lines on the glass substrate, which impairs image display quality.
Innovation Solution
A pixel array module with a substrate having a pixel electrode array on one surface and a patterned conductive layer on the opposite surface, along with a semiconductor circuit unit, allows for complete utilization of the substrate surface without compromising the aperture ratio, enabling optimal image representation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If scan lines and data lines are disposed on the glass substrate to control pixel transmission, then the pixel array can be electrically connected and controlled, but the aperture ratio decreases due to the black matrix shielding required to prevent line interference
Solution Approach 1:
The patent moves the scan lines and data lines from the front surface (first surface) of the glass substrate to the back surface (second surface). This dimensional relocation allows the display area on the front surface to be fully utilized without line obstructions, while the back surface handles the electrical routing functions.
Solution Approach 2:
The patent separates the display function (pixel electrode array on first surface) from the electrical control function (scan lines and data lines on second surface). This segmentation allows each surface to be optimized for its specific purpose, with the front surface dedicated to light transmission and display, and the back surface dedicated to electrical routing.
2Reliability
If a black matrix is used to shield scan lines and data lines from influencing image display quality, then image display quality is maintained, but transmission is lowered and aperture ratio decreases
Solution Approach 1:
The patent extracts the scan lines and data lines from the display area (first surface) and relocates them to the non-display area (second surface). This extraction eliminates the need for black matrix shielding in the display area, allowing full light transmission and maximum aperture ratio while maintaining image quality.
3Area of stationary object
If the pixel electrode array is disposed on one surface of the substrate, then the display surface can be completely used, but the electrical connection to pixel electrodes becomes complex
Solution Approach 1:
The patent utilizes the second surface (back surface) of the glass substrate for electrical connections. By moving the scan lines and data lines to this dimension, the patent simplifies the connection architecture while allowing the first surface to be completely dedicated to the display function.
Data Source
AI summary
A pixel array module includes a substrate, a pixel electrode array, a patterned conductive layer and a semiconductor circuit unit. The substrate has a first surface and a second surface opposite to the first surface. The pixel electrode array is disposed on the first surface of the substrate. The patterned conductive layer is disposed on the second surface of the substrate, and the patterned conductive layer is electrically connected to the pixel electrode array. The semiconductor circuit unit has at least one input terminal and at least one output terminal, which is electrically connected to the patterned conductive layer. A flat display apparatus is also disclosed.