Display Bezel Color Matching via Printed Layer Reflectivity Control
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Solution Overview
Problem
Display apparatuses with different colored display panels and bezels exhibit poor finish and color inconsistencies, particularly when multiple panels are arranged on a single cover window, leading to visible differences in color and reflected luminance.
Innovation Solution
A display apparatus with printed layers on the cover window, including a black matrix layer, anti-fingerprint layer, anti-glare layer, and anti-reflection layer, is designed to match the color and reflected luminance of the display panels, ensuring the bezel and panels have similar colors and reduced luminosity contrast.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the bezel is made with a different color from the display panel, then the manufacturing process is simpler, but the color consistency and visual finish deteriorate
Solution Approach 1:
The patent applies local quality by making the printed layer's optical properties location-dependent. The printed layer on the rear surface of the cover window has specific reflectivity characteristics that match the display panel, while the front surface has different properties for aesthetic purposes. This allows different parts of the bezel to have different optical characteristics, achieving both manufacturing simplicity and color consistency.
Solution Approach 2:
The patent utilizes color changes by controlling the reflected luminance and color coordinates of the printed layer. By adjusting the optical properties of the printed layer, the bezel can exhibit color characteristics that match the display panel under specific viewing conditions, thereby achieving color consistency without requiring the entire bezel structure to be manufactured with matching materials.
2Adaptability or versatility
If multiple display panels are arranged on one cover window, then the display functionality is enhanced, but the color and luminance uniformity across panels and bezel deteriorates
Solution Approach 1:
The patent applies local quality by positioning printed layers with specific optical properties at strategic locations around each display panel. The printed layer on the rear surface of the cover window is configured to match the optical characteristics of the display panels, creating localized zones of color and luminance consistency that extend across multiple panels and the surrounding bezel area.
Solution Approach 2:
The patent utilizes parameter changes by adjusting the reflected luminance and color coordinates of the printed layer to match those of the display panels. By controlling these optical parameters, the bezel regions surrounding multiple display panels can be made to visually blend with the panels, achieving uniform appearance across the entire display assembly.
3Manufacturing precision
If the printed layer reflected luminance is reduced to match the display panel, then the color consistency improves, but the visibility of the bezel area deteriorates
Solution Approach 1:
The patent applies local quality by creating spatial variation in the optical properties of the printed layer. The printed layer has different reflectivity characteristics at different locations and angles, allowing it to match the display panel's luminance when viewed from certain angles while maintaining sufficient visibility from other viewing positions. This localized optimization resolves the contradiction between color matching and visibility.
Solution Approach 2:
The patent utilizes another dimension by considering the angular dependence of reflected luminance. Instead of uniformly reducing reflectivity across all viewing angles, the printed layer is designed to have angle-dependent optical properties. This allows the bezel to match the panel's luminance in the critical viewing direction while maintaining adequate visibility from other angles through the cover window.
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 corrects color and luminance differences between display panels and bezels, enhancing the visual appearance by setting the reflected luminance and color coordinates within specific ranges, making the bezel appear as a consistent color with the panels, thereby improving the overall finish and user perception.
Implementation Method 1
an anti-reflection layer interposed between the anti-fingerprint layer and the anti-glare layer or between the rear surface of the cover window and the first printed layer
Implementation Method 2
an anti-glare layer arranged on a rear surface of the anti-fingerprint layer
Data Source
AI summary
Discussed is a display apparatus including a cover window, at least one first display panel arranged on a rear surface of the cover window, a first printed layer arranged on the rear surface of the cover window around the at least one first display panel, wherein reflected luminance of the first printed layer or a color of the first printed layer on color coordinates is formed within a set range so as to correspond to a first measurement value obtained by measuring reflected luminance of the at least one first display panel or a color of the at least one first display panel on the color coordinates.