Black Matrix Segmentation for Display Light Management
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current display devices face inefficiencies in light transmission and color representation due to the lack of effective light management between light-transmitting and wavelength conversion patterns, leading to suboptimal light incidence and color crosstalk.
Innovation Solution
Incorporating a black matrix between the side surfaces of light-transmitting and wavelength conversion patterns to enhance light incidence efficiency and planarization, while also forming a separation space to prevent color crosstalk, thereby improving the flatness of the planarization layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If no black matrix is disposed between light-transmitting and wavelength conversion patterns, then the structure is simpler and manufacturing is easier, but light incidence efficiency is reduced and color crosstalk occurs
Solution Approach 1:
The patent divides the display structure into distinct segments by introducing a black matrix that separates the light-transmitting pattern and wavelength conversion pattern. This segmentation prevents color crosstalk between adjacent pixels and improves light incidence efficiency by directing light more effectively onto the wavelength conversion pattern, resolving the contradiction between manufacturing simplicity and light incidence efficiency.
2Device complexity
If no black matrix is disposed between light-transmitting and wavelength conversion patterns, then the device structure is simpler, but color crosstalk increases and display quality deteriorates
Solution Approach 1:
The patent extracts the light-blocking function from the overall display structure by introducing a dedicated black matrix component. This extracted element specifically addresses color crosstalk between pixels, improving color reproduction accuracy without significantly complicating the overall device structure, as the black matrix can be integrated into existing manufacturing processes.
3Productivity
If the planarization layer is formed without filling the separation space, then the manufacturing process is shorter, but the planarization layer lacks flatness and display quality is reduced
Solution Approach 1:
The patent applies preliminary action by forming the black matrix to fill the separation space between patterns before forming the planarization layer. This preliminary filling action creates a pre-prepared surface that ensures proper flatness when the planarization layer is subsequently formed, eliminating the need for additional correction steps and maintaining manufacturing efficiency while achieving the required flatness.
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
This configuration increases light incidence efficiency and reduces color crosstalk, resulting in improved color reproduction and display quality by optimizing the interaction between light-transmitting and wavelength conversion patterns.
Implementation Method 1
a first wavelength conversion pattern at least partially overlapping with the second sub-pixel electrode and a second wavelength conversion pattern at least partially overlapping with the third sub-pixel electrode
Data Source
AI summary
A display device and a method of manufacturing a display device are provided. A display device includes a first substrate, sub-pixel electrodes adjacent to each other on the first substrate, a second substrate positioned opposite to the first substrate, a light-transmitting pattern on the second substrate and at least partially overlapping with the first sub-pixel electrode, a wavelength conversion pattern on the second substrate, a first black matrix filling a separation space between a side surface of the light-transmitting pattern and a side surface of a first wavelength conversion pattern and including a first surface facing the first substrate and a second surface facing the second substrate, and the first surface of the first black matrix is wider than the second surface of the first black matrix, and a first surface of a second wavelength conversion pattern is wider than a second surface of the second wavelength conversion pattern.