Display Panel Anti-Reflection Layer Overcoat Integration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Display panels face challenges in integrating additional functions such as cameras or sensors without compromising the display area, while also maintaining efficient light transmission and image quality.
Innovation Solution
A display panel structure is designed with a transmission area that allows light or sound to pass through, incorporating a pixel circuit with a pixel defining layer, emission layers, and an anti-reflection layer with a light-blocking portion, color filters, and an overcoat layer to optimize display and functional integration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If components such as cameras or sensors are arranged to overlap with the display area, then additional functions are added to the display panel, but the aperture ratio of pixels may be degraded
Solution Approach 1:
The anti-reflection layer is segmented into a light-blocking portion and color filter portions, allowing different regions to serve different functions. The light-blocking portion blocks light in areas where sensors are located, while the color filter portions maintain light transmission for display pixels, thus preserving aperture ratio while enabling additional functions.
Solution Approach 2:
Different regions of the anti-reflection layer have different optical properties. The light-blocking portion has light-blocking properties to protect sensor areas, while the color filter portions have light-transmitting properties to maintain display quality. This local differentiation allows the structure to simultaneously achieve both function addition and aperture ratio preservation.
2Illumination intensity
If the anti-reflection layer is configured with a light-blocking portion and color filters, then light transmission and image quality are optimized, but the device structure becomes more complex
Solution Approach 1:
The anti-reflection layer merges multiple functions into a single integrated structure. It combines the light-blocking function (for sensor protection), color filtering function (for display quality), and anti-reflection function (for light transmission optimization) into one layer, thereby reducing overall device complexity while maintaining optimal light transmission.
Solution Approach 2:
The anti-reflection layer is designed as a multi-functional component that simultaneously performs light blocking, color filtering, and anti-reflection. This universal design eliminates the need for separate layers for each function, simplifying the overall device structure while optimizing light transmission and image quality.
3Manufacturing precision
If the overcoat layer is positioned between the light-blocking portion and color filter, then manufacturing precision is improved, but the device complexity increases
Solution Approach 1:
The overcoat layer acts as an intermediary between the light-blocking portion and the color filter. This intermediate layer provides a stable base for positioning the color filter, improving alignment precision during manufacturing. The overcoat layer's presence facilitates more accurate patterning and reduces registration errors, thereby enhancing overall manufacturing precision.
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 enables a larger display area while incorporating additional functions, such as sensors, without degrading the aperture ratio of pixels, thus enhancing both display quality and functional capabilities.
Implementation Method 1
an anti-reflection layer on the opposite electrode. The anti-reflection layer includes: a light-blocking portion corresponding to an area between the opening of the pixel defining layer overlapping with the first pixel electrode and the opening of the pixel defining layer overlapping with the second pixel electrode
Implementation Method 2
a first color filter overlapping with the first emission layer; a second color filter overlapping with the second emission layer
Data Source
AI summary
A display panel includes: first and second pixel circuits on a substrate; first and second pixel electrodes electrically connected to the first and second pixel circuits, respectively; a pixel defining layer having openings overlapping with the first and second pixel electrodes, respectively; a first emission layer on the first pixel electrode; a second emission layer on the second pixel electrode; an opposite electrode on the first emission layer and the second emission layer; and an anti-reflection layer on the opposite electrode. The anti-reflection layer includes: a light-blocking portion corresponding to an area between the openings of the pixel defining layer; a first color filter overlapping with the first emission layer; a second color filter overlapping with the second emission layer; and an overcoat layer including a portion located in a separation space between the light-blocking portion and at least one of the first color filter or the second color filter.