Light-Emitting and Light-Receiving Device for Display Resolution
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Solution Overview
Problem
Existing display apparatuses lack a light detection function, have limited resolution, and are not highly convenient or multifunctional, with a low aperture ratio and high manufacturing costs.
Innovation Solution
A display apparatus incorporating a pixel structure with a light-emitting and light-receiving device that functions as both a light-emitting and light-receiving element, allowing for increased resolution and convenience while reducing manufacturing costs through simplified manufacturing processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate light-emitting devices and light-receiving devices are used, then the light detection function is achieved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The patent combines light-emitting and light-receiving functions into a single device structure. The light-emitting device includes a light-emitting layer that can emit light, while simultaneously incorporating a light-receiving layer that can detect light. This merging eliminates the need for separate light-emitting and light-receiving devices, reducing device complexity while achieving multifunctionality.
Solution Approach 2:
The light-emitting device is designed to perform multiple functions: it can emit light through the light-emitting layer and simultaneously detect light through the light-receiving layer. This universal design allows a single device to serve both display and light detection purposes, reducing the overall number of components needed in the display apparatus.
2Adaptability or versatility
If separate light-emitting devices and light-receiving devices are used, then the light detection function is achieved, but the manufacturing cost increases
Solution Approach 1:
The patent combines light-emitting and light-receiving functions into a single device structure. The light-emitting device includes a light-emitting layer that can emit light, while simultaneously incorporating a light-receiving layer that can detect light. This merging eliminates the need for separate light-emitting and light-receiving devices, reducing device complexity while achieving multifunctionality.
Solution Approach 2:
The light-emitting device is designed to perform multiple functions: it can emit light through the light-emitting layer and simultaneously detect light through the light-receiving layer. This universal design allows a single device to serve both display and light detection purposes, reducing the overall number of components needed in the display apparatus.
3Area of stationary object
If the aperture ratio is increased, then the display quality is improved, but the light detection sensitivity may be reduced
Solution Approach 1:
The patent applies different functional layers in different regions of the light-emitting device. The light-emitting layer is optimized for light emission with appropriate material composition and thickness to achieve high aperture ratio, while the light-receiving layer is specifically designed in regions where light detection is needed, with materials and structures optimized for light absorption and charge generation. This local optimization allows both high aperture ratio and maintained detection sensitivity.
Solution Approach 2:
The light-emitting device employs composite material structures combining different functional materials: light-emitting materials in the light-emitting layer and light-absorbing materials in the light-receiving layer. These composite materials allow the device to simultaneously achieve high light emission efficiency (high aperture ratio) and effective light detection, as each material is selected for its specific optical properties.
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 display apparatus achieves a high aperture ratio, increased resolution, and multifunctionality, while reducing manufacturing costs and improving manufacturing yield by integrating light-emitting and light-receiving functions into a single device.
Implementation Method 1
Light-emitting devices (also referred to as EL devices or EL elements) utilizing electroluminescence (hereinafter referred to as EL)
Data Source
AI summary
The resolution of a display apparatus having a light detection function is increased. A display apparatus includes a plurality of transistors and a light-emitting and light-receiving device in a subpixel. The light-emitting and light-receiving device has a function of emitting light of a first color and a function of receiving light of a second color. One of a source and a drain of a first transistor is electrically connected to a first wiring, and the other thereof is electrically connected to a gate of a second transistor. One electrode of the light-emitting and light-receiving device is electrically connected to one of a source and a drain of the second transistor, one of a source and a drain of a third transistor, and one of a source and a drain of a fifth transistor. One of a source and a drain of a fourth transistor is electrically connected to a second wiring, and the other thereof is electrically connected to the other of the source and the drain of the third transistor.