Array Substrate Edge Pixel Shielding for Irregular Display Borders
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Solution Overview
Problem
Full-screen and intelligent wearable display devices with irregular shapes face issues of graininess and sawtooth feelings at non-rectangular edges due to uneven pixel arrangements, affecting display quality.
Innovation Solution
An array substrate with a light shielding block covering part of the light transmission region of edge pixels, reducing light transmittance and brightness, and using thin film transistors with light shielding layers to improve edge pixel coverage, while simplifying the manufacturing process by setting the light shielding block's area ratio as part of an arithmetic progression.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If edge pixels are arranged to form non-rectangular shapes (circular, round-cornered, U-shaped), then the display device meets diversified appearance requirements, but graininess and sawtooth feelings appear at the edges due to uneven pixel arrangements
Solution Approach 1:
The patent applies local quality by differentiating the treatment of edge pixels from internal pixels. Light shielding blocks are selectively added only to edge pixels that are incomplete (missing sub-pixels), while internal pixels remain unchanged. This localized modification allows the display to achieve irregular shapes without introducing graininess at the edges, as the light shielding blocks compensate for the uneven pixel distribution only where necessary.
Solution Approach 2:
The patent uses light shielding blocks that adjust the optical properties of edge pixels. By adding these blocks, the light transmission characteristics of edge pixels are modified to match those of internal pixels, effectively hiding the irregularities in pixel arrangement. The light shielding blocks create a visual uniformity that masks the underlying structural differences, preventing graininess and sawtooth effects at the display edges.
2Manufacturing precision
If light shielding blocks are added to edge pixels to reduce graininess, then edge display quality improves, but the manufacturing process becomes more complex
Solution Approach 1:
The patent merges the light shielding block formation with the existing pixel manufacturing process. The light shielding blocks are formed using the same thin film deposition and patterning steps that are already used to create the pixel structures. This integration means that no additional major manufacturing equipment or process steps are required, and the light shielding blocks are created as part of the standard display panel fabrication sequence, thereby minimizing the increase in manufacturing complexity.
3Manufacturing precision
If light shielding blocks cover part of the light transmission region, then graininess and sawtooth feelings are reduced, but the light transmittance and brightness of edge pixels decrease
Solution Approach 1:
The patent applies local quality by selectively adding light shielding blocks only to edge pixels that are incomplete (missing sub-pixels), while internal pixels remain unchanged. This localized modification allows the display to achieve irregular shapes without introducing graininess at the edges, as the light shielding blocks compensate for the uneven pixel distribution only where necessary.
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
The solution effectively reduces graininess and sawtooth feelings at the edges of display regions, enhancing display quality and simplifying the manufacturing process by standardizing the light shielding block's area ratio within an arithmetic progression.
Implementation Method 1
a light shielding layer located between the active layer and the substrate
Data Source
AI summary
The embodiments of the present disclosure provide an array substrate and a method for manufacturing the same, and a display device. The array substrate includes a substrate, wherein the substrate has a display region and a peripheral region surrounding the display region, the display region has a plurality of pixels arranged in an array, and each of the plurality of pixels includes a light transmission region and a light shielding region, and a light shielding block covering at least a part of the light transmission region of at least one pixel close to the peripheral region of the plurality of pixels.