Refraction Pieces in OLED Peripheral Encapsulation for Edge Brightness
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Solution Overview
Problem
Conventional OLED display panels experience unsatisfactory brightness and color precision at the edges, leading to a suboptimal visual experience due to the edge design.
Innovation Solution
Incorporating refraction pieces made of materials like silicon nitride, silica, or zinc oxide in the thin film encapsulation layer at the peripheral area of the display panel to refract light towards the display area, enhancing brightness by directing light from the peripheral area through the substrate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a conventional edge design is used in OLED display panels, then the structure is simple and easy to manufacture, but the brightness and color precision at panel edges deteriorate, leading to unsatisfactory visual experience
Solution Approach 1:
The patent applies local quality by introducing refraction pieces specifically at the peripheral area of the display panel where brightness deficiency occurs. These refraction pieces have different optical properties compared to the central area, creating localized light manipulation to improve edge brightness without affecting the overall panel structure or manufacturing complexity
Solution Approach 2:
The refraction pieces act as intermediary elements between the light source and the display area. They mediate the light path by refracting light from the peripheral area toward the display area, thereby improving edge brightness without requiring changes to the fundamental OLED structure or manufacturing process
2Illumination intensity
If refraction pieces are added to the encapsulation layer at the peripheral area, then brightness at the display area near peripheral area is improved, but the device structure becomes more complex
Solution Approach 1:
The patent merges the refraction function with the encapsulation layer by integrating refraction pieces into the existing encapsulation structure. This combination approach improves edge brightness while avoiding the need for separate additional components, thereby limiting the increase in structural complexity
Solution Approach 2:
The encapsulation layer is given multi-functionality by incorporating refraction pieces that serve both protective and optical functions. This allows the same structural element to perform multiple roles, reducing the need for additional dedicated components and thereby controlling overall device complexity
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 significantly increases display brightness near the edges by refracting light from the peripheral area to the display area, thereby improving the visual experience by addressing the brightness and color precision issues at the panel edges.
Implementation Method 1
the refraction piece being disposed in a first encapsulation organic layer of the encapsulation layer, and used to refract light to the display area after the light at the peripheral area passing the opening when it passes through the substrate
Data Source
AI summary
A display panel includes a substrate and an encapsulation layer disposed on the substrate. Through disposing a refraction piece in a thin film encapsulation layer at a peripheral area of the display panel, having the refraction piece being disposed in a first encapsulation organic layer of the encapsulation layer, and refracting light through an opening of the refraction piece to a display area when light at the peripheral area passes through the substrate, display brightness at a place of the display area close to the peripheral area is increased.