Display Unit Light-Sensing Integration with Aperture Optimization
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Solution Overview
Problem
Current display units with light-sensing capabilities face challenges in increasing resolution, manufacturing yield, and reducing manufacturing costs while maintaining a high aperture ratio and convenience.
Innovation Solution
A display unit incorporating a first and second light-emitting device, a light-receiving device, and a light-blocking layer, where the light-emitting devices emit light of a first color, and the light-receiving device receives light through a specific opening of the light-blocking layer, with optimized distances to enhance light reception and reduce manufacturing steps and costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If light-receiving devices are added to display units to provide light-sensing capabilities, then the functionality and convenience of the display unit is improved, but the manufacturing complexity and cost increase
Solution Approach 1:
The patent combines light-emitting devices and light-receiving devices into a single integrated display unit structure. The light-receiving devices are positioned to share the same substrate and housing as the light-emitting devices, merging multiple functions into one device. This integration reduces the number of separate components and simplifies the overall manufacturing process while providing both display and light-sensing capabilities.
2Measurement precision
If more light-receiving devices are incorporated to increase resolution, then the measurement precision is improved, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent positions light-receiving devices at specific locations relative to light-emitting devices to optimize light reception for sensing purposes. The light-receiving devices are strategically placed to receive light from specific light-emitting devices, creating localized sensing zones. This selective positioning allows for high-resolution sensing in critical areas while maintaining a manageable overall device structure.
3Area of stationary object
If multiple light-emitting devices and light-receiving devices are integrated, then the aperture ratio is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The patent employs a common substrate for both light-emitting and light-receiving devices, establishing a predefined reference framework before device assembly. The substrate is designed with predetermined positions and alignment features that guide the placement of both device types. This preliminary structuring ensures that subsequent assembly operations can achieve the required precision more easily, as the reference framework is already in place.
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 improves the resolution and manufacturing yield of display units with light-sensing capabilities, reduces the number of manufacturing steps, and lowers costs while maintaining a high aperture ratio and convenience.
Implementation Method 1
Light-emitting devices utilizing electroluminescence (hereinafter referred to as EL; such devices are also referred to as EL devices or EL elements)
Implementation Method 2
a light-receiving device (also referred to as a light-receiving element)
Data Source
AI summary
A display unit having a function of sensing light is provided. The display unit includes a first and second light-emitting devices, a light-receiving device, and a light-blocking layer. The first and second light-emitting devices emit a first color. The light enters the light-receiving device through a first opening of the light-blocking layer. In a top view, |a−b| of a difference between the shortest distance a from the first light-emitting device to the light-receiving device and the shortest distance b from the second light-emitting device to the light-receiving device is smaller than |c−d| of a difference between the shortest distance c from the first light-emitting device to the first opening and the shortest distance d from the second light-emitting device to the first opening. In the top view, c is shorter than d. Alternatively, a light-emitting and light-receiving device can be used.