Rounded Edge Display Pixel Electrode Branch Width Adjustment
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Solution Overview
Problem
Display devices with rounded edges face issues of color shift and stepped edge appearance due to light blocking members overlapping pixels, leading to reduced luminance and aesthetic problems.
Innovation Solution
The design includes a substrate with rounded edges, a light blocking member with rounded corners, and pixels with varying branch configurations to prevent color shift and stepped edges, where the width and spacing of fine branches in overlapping pixels are adjusted to maintain equal luminance and avoid edge pixel turning off.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a light blocking member is disposed on the edge of the display device to block outside light, then light blocking performance is improved, but pixels overlapping the light blocking member experience reduced luminance and color shift
Solution Approach 1:
The patent applies local quality by differentiating the treatment of pixels based on their position. Pixels overlapping the light blocking member (edge pixels) have their fine branch widths adjusted to be narrower than non-overlapping pixels, compensating for the reduced light intake. This localized adjustment ensures uniform luminance across the display while maintaining effective light blocking at the edges.
2Manufacturing precision
If pixels overlapping the light blocking member are turned off to avoid color shift, then color accuracy is improved, but the screen edge appears with a stepped shape
Solution Approach 1:
The patent changes the physical parameters of the pixel electrode structure, specifically the width of fine branches in overlapping pixels, to maintain luminance output. By adjusting this geometric parameter, the system achieves both color accuracy and smooth edge appearance without needing to turn off edge pixels.
3Stability of the object's composition
If the width of fine branches in overlapping pixels is reduced to compensate for light blocking, then luminance uniformity is improved, but the pixel structure becomes more complex
Solution Approach 1:
The patent implements local quality by applying structural modifications only to specific pixels that overlap with the light blocking member. The fine branch width is reduced only in these affected pixels, while non-overlapping pixels maintain their original structure. This targeted approach achieves luminance uniformity without unnecessarily complicating the entire pixel array.
Data Source
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AI summary
The present disclosure relates to a display device, and the display device according to an exemplary embodiment includes: a substrate having a rounded edge; a light blocking member disposed around a display area of the substrate, wherein a corner of the light blocking member has a rounded edge; a plurality of pixels disposed on the substrate; and a pixel electrode disposed in each of the plurality of pixels, wherein the pixel electrode has a horizontal stem, a vertical stem, and a plurality of fine branches, wherein the plurality of pixels includes a first pixel at least partially overlapping the light blocking member and a second pixel adjacent to the first pixel and not overlapping the light blocking member, and wherein a shape of a fine branch disposed in the first pixel is different from a shape of a fine branch disposed in the second pixel.