Display Apparatus with Integrated Capacitive Touch and Black Matrix
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Solution Overview
Problem
The integration of an electrostatic capacitive-type touch panel in display apparatuses is hindered by structural limitations and efficiency issues due to the structure of the display unit and encapsulating unit, leading to reduced manufacturing efficiency and compromised optical characteristics, especially in environments with sunlight where contrast is affected by reflection.
Innovation Solution
A display apparatus design featuring a substrate with a display unit, an encapsulation substrate, an electrostatic capacitive pattern layer, and a black matrix layer that surrounds the pixels, where the electrostatic capacitive pattern layer is formed on the encapsulation substrate and includes a transmissive conductive layer, and the black matrix layer improves contrast by preventing light diffusion and reflection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an electrostatic capacitive-type touch panel is mounted on the display apparatus, then the touch panel function is achieved, but the manufacturing efficiency is reduced and structural accuracy is compromised
Solution Approach 1:
The patent merges the touch panel structure with the display apparatus structure by integrating the electrostatic capacitive pattern layer directly into the encapsulation substrate structure. This combination eliminates the need for separate touch panel assembly steps, thereby improving manufacturing efficiency while maintaining touch panel functionality.
Solution Approach 2:
The encapsulation substrate is designed to serve multiple functions: it provides structural encapsulation for the display unit and simultaneously serves as the substrate for the electrostatic capacitive touch panel. This multi-functionality reduces the number of components and simplifies the manufacturing process.
2Adaptability or versatility
If an electrostatic capacitive-type touch panel is mounted on the display apparatus, then the touch panel function is achieved, but the structural accuracy of the encapsulating unit is compromised
Solution Approach 1:
By combining the encapsulation substrate and touch panel substrate into a single integrated structure, the patent eliminates alignment and positioning errors that would occur with separate components, thereby maintaining high structural accuracy while achieving touch panel functionality.
3Adaptability or versatility
If the display apparatus is used in an environment with incident sunlight, then the display can be viewed outdoors, but the contrast of the display apparatus considerably deteriorates due to the reflection of the sunlight
Solution Approach 1:
The patent applies a black matrix layer that converts the harmful reflection of sunlight into beneficial light absorption. The black matrix layer absorbs incident sunlight that would otherwise reflect off the display surface, thereby maintaining display contrast and readability in outdoor environments with incident sunlight.
4Illumination intensity
If a black matrix layer is added to improve contrast, then the optical characteristic is improved, but the device complexity increases
Solution Approach 1:
The black matrix layer is integrated into the encapsulation substrate structure, combining the encapsulation function and the contrast improvement function into a single structural element. This integration adds minimal complexity while achieving the desired optical improvement.
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 enhances the optical characteristics and maintains the touch panel functionality without increasing the panel's thickness, allowing for efficient manufacturing and improved contrast, especially in sunlight environments.
Implementation Method 1
a display apparatus having an internal electrostatic capacitive-type touch panel function
Implementation Method 2
the black matrix layer improves contrast by preventing light diffusion and reflection
Data Source
AI summary
A display apparatus having an improved optical efficiency and a touch panel function, the display apparatus including a substrate; a display unit formed on the substrate and including a plurality of pixels; an encapsulation substrate disposed facing the display unit to encapsulate the display unit; an electrostatic capacitive pattern layer formed on the encapsulation substrate; and a black matrix layer formed between the substrate and the encapsulation substrate, and disposed to surround the plurality of pixels, wherein the plurality of pixels are disposed to correspond to the electrostatic capacitive pattern layer.