Quantum Dot Display Structure for Black Reflected Color
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Solution Overview
Problem
Display apparatuses reflect external light as blue rather than black when not driven, affecting the color quality of reflected light.
Innovation Solution
The display apparatus incorporates a configuration of light-emitting devices, color conversion layers, and insulating layers on substrates, including auxiliary openings and extensions, to manage light emission and reflection, ensuring the reflected color is black without bias towards blue, red, or green.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional display apparatus structure is used, then light emission function is achieved, but reflected light color is tinged with blue instead of black
Solution Approach 1:
The patent introduces auxiliary openings specifically positioned relative to the first opening in a first direction, creating localized structural modifications. The first auxiliary color conversion layer is placed only in the auxiliary opening, not uniformly across all openings, allowing selective control of reflected light properties in specific regions while maintaining overall structural simplicity
Solution Approach 2:
The first auxiliary color conversion layer acts as an intermediary element between the incident light and the reflected light. This intermediate layer converts incident light into light of a first color, mediating the optical interaction to achieve black reflected color appearance while maintaining the conventional display structure
2Object-affected harmful factors
If auxiliary openings and auxiliary color conversion layers are added, then reflected light color is improved to appear black, but device structure becomes more complex
Solution Approach 1:
The patent segments the color conversion function by separating it into distinct components: the first color conversion layer in the first opening and the first auxiliary color conversion layer in the auxiliary opening. This segmentation allows each layer to perform its specific function independently, achieving black reflected color through coordinated action of separated elements rather than requiring complete structural redesign
Solution Approach 2:
The patent addresses the color quality issue by adding structural elements in another dimension - the auxiliary openings are positioned in a spatial relationship (first direction) relative to the main openings. This dimensional approach allows control of reflected light properties without complicating the basic planar structure of the display apparatus
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 effectively adjusts the reflected color of external light to appear black, improving color accuracy and consistency when the display is not in use.
Implementation Method 1
a first color conversion layer arranged in the first opening and including first quantum dots to convert incident light into light of a first color
Implementation Method 2
a second color conversion layer arranged to correspond to the third emission area and including second quantum dots to convert incident light into light of a second color
Data Source
AI summary
A display apparatus is provided and including: first to third light-emitting devices arranged on a lower substrate; an upper substrate including a first emission area corresponding to the first light-emitting device, a second emission area corresponding to the second light-emitting device, a third emission area corresponding to the third light-emitting device, and a non-emission area; a first insulating layer arranged on the upper substrate and having a first opening corresponding to the first emission area, a second opening corresponding to the second emission area, and a first auxiliary opening corresponding to the non-emission area and located relative to the first opening in a first direction; and a second insulating layer arranged on the first insulating layer and having a first open portion corresponding to the first opening and the first auxiliary opening.