Display Apparatus with Integrated Light-Blocking Layer and Color Filter
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Solution Overview
Problem
The integration of a color filter and a touch sensor in display apparatuses leads to increased thickness and limited viewing angles due to the separate placement of light-blocking layers, resulting in degraded user visibility from the side.
Innovation Solution
The display apparatus incorporates a light-blocking layer with openings that expose the first insulating layer, allowing for the integration of color filters within these openings, effectively forming a single body with the touch screen, reducing thickness and enhancing viewing angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a color filter and touch sensor are separately placed on the display, then the display can provide color filtering and touch sensing functions, but the display apparatus becomes thicker
Solution Approach 1:
The patent merges the color filter layer and touch sensor layer into a single integrated structure. The color filter is formed within the touch sensor structure by creating openings in the touch sensor electrode pattern, allowing the color filter material to be deposited only in the pixel regions. This integration eliminates the need for separate color filter and touch sensor layers, thereby reducing overall display thickness while maintaining both color filtering and touch sensing functions.
2Ease of operation
If a blocking film is disposed on the upper portion of the touch sensor, then the touch sensor can be formed, but the viewing angle of light emitted from the pixel is limited
Solution Approach 1:
The patent applies local quality by creating a non-uniform structure in the touch sensor layer. Instead of a continuous blocking film, the touch sensor electrode pattern includes openings at the pixel positions where light needs to pass through. This localized modification allows light to emerge from these openings at various angles while the metal patterns in non-pixel regions continue to provide touch sensing functionality. The result is improved viewing angle without sacrificing touch sensor operation.
Data Source
AI summary
A display apparatus includes a substrate, a plurality of pixel electrodes disposed over the substrate, first metal patterns disposed over the plurality of pixel electrodes and between adjacent pixel electrodes, a first insulating layer disposed over the first metal patterns, second metal patterns disposed over the first insulating layer, in which each second metal pattern is electrically connected to one of the first metal patterns through a contact hole in the first insulating layer, and a light-blocking layer covering the second metal patterns and including first openings respectively corresponding to one of the plurality of pixel electrodes, in which each of the first openings exposes a portion of the first insulating layer.