Display Spare-Area Metal Blocks for Narrow-Bezel Light Blocking
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Solution Overview
Problem
Display devices face issues with light leakage from spare regions in non-display areas and wide bezel areas, which affect size and performance.
Innovation Solution
Incorporating a substrate with a display area and non-display area, where a clock signal line is disposed, and a spare area between the clock signal line and the display area, with blocks of opaque metal layers in the spare areas to prevent light leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a spare area is left empty between the clock signal line and display area, then manufacturing is simpler, but light leakage occurs from the non-display area
Solution Approach 1:
The patent extracts the harmful light transmission path by introducing a light-blocking structure (first and second blocks) in the spare area. These blocks are formed using the same semiconductor manufacturing processes (etching, deposition) as the existing circuit structures, effectively removing the light leakage issue without requiring separate manufacturing steps.
Solution Approach 2:
The blocks in the spare area serve as intermediary elements that intercept and block light paths from the non-display area. These blocks are formed from the same semiconductor material as the circuit components, acting as a mediator between the existing structures and the light transmission path, thereby preventing light leakage while maintaining manufacturing compatibility.
2Area of moving object
If the bezel area is made narrower, then display size is improved, but light leakage from non-display area becomes more problematic
Solution Approach 1:
The patent removes the light leakage problem from the bezel area by placing light-blocking blocks in the spare area. This allows the bezel to be made narrower without compromising display quality, as the blocks prevent light from the non-display area from reaching the display area.
Solution Approach 2:
The blocks act as intermediary light-blocking elements positioned in the spare area, mediating between the non-display area and the display area. This intermediary structure enables narrower bezel design while preventing light leakage, as the blocks intercept light paths before they can reach the display area.
3Object-affected harmful factors
If an opaque structure is added to block light, then light leakage is prevented, but device complexity increases
Solution Approach 1:
The patent merges the light-blocking function with the existing semiconductor manufacturing processes. The blocks are formed using the same etching, deposition, and patterning steps as the circuit structures, combining the light-blocking function with the existing fabrication process rather than adding separate manufacturing steps.
Solution Approach 2:
The semiconductor structures serve multiple functions: they form both the circuit components and the light-blocking blocks. The same material and fabrication processes are used for both electrical functionality and optical light-blocking, making the structure multi-functional and reducing overall device complexity.
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
Prevents light leakage and reduces the bezel area, enhancing the display device's size and performance by utilizing a structured layout with opaque metal blocks in spare regions.
Implementation Method 1
an opaque metal block is placed in the spare area to prevent light leakage
Data Source
AI summary
A display device in one example includes a substrate including a display area and a non-display area disposed at at least one side of the display area, a clock signal line disposed in the non-display area, a spare area disposed between the clock signal line and the display area, and a block disposed in the spare area. The display area includes a plurality of pixels, and each of the plurality of pixels includes at least one switching transistor and at least one driving transistor. The block can include an opaque metal layer and an area corresponding to the spare area, which is disposed in the spare area.