Electro-Optical Device Lens Layer Space Refractive Index
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Solution Overview
Problem
Existing electro-optical devices face a challenge in enhancing lens performance while maintaining high light transmittance, as increasing the refractive index of the lens layer leads to decreased transmittance due to the contact between the substrate and the lens layer.
Innovation Solution
The electro-optical device incorporates a layered structure with a space between the lens layer and the substrate, where the lens layer is separated from the substrate by a sacrificial layer, allowing for a higher refractive index difference without direct contact, thereby maintaining high transmittance and improving lens performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the refractive index of the lens layer is increased to enhance lens performance, then the refractive index difference between the substrate and lens layer increases, but the transmittance of light in the lens layer decreases
Solution Approach 1:
A space is introduced between the lens layer and the substrate, acting as an intermediary that enables a higher refractive index difference while preventing direct contact. This space allows the lens layer to have high refractive index material without the negative effect of direct substrate contact, thus maintaining high light transmittance while enhancing lens performance.
Solution Approach 2:
The refractive index parameter of the lens layer is increased to enhance lens performance, and simultaneously the structural parameter of adding a space between the lens layer and substrate is changed. This combination of parameter changes allows achieving high refractive index difference without the penalty of reduced transmittance that would occur in direct contact configurations.
2Manufacturing precision
If the refractive index difference between the lens layer and substrate is increased to improve lens performance, then lens performance is enhanced, but light transmittance is compromised
Solution Approach 1:
The space between the lens layer and substrate serves as an intermediary structure that decouples the relationship between refractive index difference and light transmittance. This allows achieving large refractive index difference for improved lens performance without the usual penalty of reduced light transmittance, as the space prevents direct optical interaction that would cause losses.
3Device complexity
If direct contact between the substrate and lens layer is maintained for structural simplicity, then device complexity is reduced, but lens performance cannot be optimized without losing transmittance
Solution Approach 1:
The space acts as a simple intermediary structure that does not significantly increase device complexity while enabling optimized lens performance. By introducing this space, the patent achieves high lens performance with high transmittance without requiring complex multi-layer structures or sophisticated designs.
Solution Approach 2:
The structure is segmented into distinct regions: the substrate, the space, and the lens layer. This segmentation allows each component to be optimized independently - the lens layer can use high refractive index material for performance while the space maintains transmittance, without requiring complex integrated structures.
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 increases the refractive index difference between the lenses and the space, enhancing light utilization efficiency and lens performance without compromising transmittance, resulting in a brighter and more efficient electro-optical device.
Implementation Method 1
a lens layer including a first lens that overlaps with the first pixel electrode when viewed from a thickness direction of the layered body, and a second lens that overlaps with the second pixel electrode when viewed from the thickness direction
Implementation Method 2
Each of the first lens and the second lens, and the layered body are disposed with a space interposed therebetween... effectively increases the refractive index difference between the lenses and the space, enhancing light utilization efficiency
Data Source
AI summary
An electro-optical device includes a pixel electrode group including a first pixel electrode and a second pixel electrode, a layered body including a plurality of insulating layers, a first transistor, and a second transistor, a lens layer including a first lens overlapping with the first pixel electrode and a second lens overlapping with the second pixel electrode, a first contact that electrically couples the first transistor and the first pixel electrode, and a second contact that electrically couples the second transistor and the second pixel electrode. The layered body, the lens layer, and the pixel electrode group are arranged in this order. Each of the first lens and the second lens, and the layered body are disposed with a space interposed therebetweenlayered body, and each of the first contact and the second contact extends through the lens layer and the space.