Semiconductor Device with Adaptive Amplifier Circuit for Low Power Display
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Solution Overview
Problem
Current semiconductor devices face challenges in achieving low power consumption, high-speed operation, small circuit area, high pixel density, and high-definition display with low power consumption and high luminance, while maintaining reliability and cost-effectiveness.
Innovation Solution
A semiconductor device architecture that includes a signal line with a first and second node, an analog-to-digital converter circuit, a sensing circuit, and an amplifier circuit, where the amplifier circuit's current amplification factor is determined based on a signal generated by comparing potentials at the nodes, and transistors with metal oxides containing elements like Al, Ga, or Sn are used in the channel formation region.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If oxide semiconductor layers with high indium proportion are stacked to increase field-effect mobility, then transistor performance improves, but manufacturing complexity and cost increase
Solution Approach 1:
The patent changes the material composition parameters by using metal oxides containing specific elements (Al, Ga, or Sn) combined with Zn in controlled proportions. This allows achieving high field-effect mobility through parameter optimization rather than complex multi-layer stacking, thereby improving transistor performance while managing manufacturing complexity
Solution Approach 2:
The patent employs composite metal oxide materials combining multiple elements (Al/Ga/Sn with Zn) to achieve superior electrical properties. This composite approach enables high field-effect mobility through material composition optimization rather than structural complexity, resolving the contradiction between performance improvement and manufacturing simplicity
2Illumination intensity
If amplifier circuit current amplification factor is increased to improve display luminance, then display brightness improves, but power consumption increases
Solution Approach 1:
The patent implements dynamic adjustment of the current amplification factor based on the comparison result between first and second signals. The amplification factor is determined adaptively rather than being fixed, allowing the system to achieve required luminance levels while minimizing power consumption by adjusting amplification only when necessary
Solution Approach 2:
The patent uses feedback from the sensing circuit that compares potentials at different nodes to dynamically control the amplifier circuit's current amplification factor. This feedback mechanism ensures that power consumption is optimized while maintaining the required display luminance by adjusting amplification based on actual circuit conditions
3Area of stationary object
If circuit area is reduced to achieve compact device design, then device size decreases, but manufacturing precision requirements increase
Solution Approach 1:
The patent integrates the sensing circuit, analog-to-digital converter, and amplifier circuit in a compact arrangement that efficiently utilizes three-dimensional space. By optimizing the spatial layout and stacking arrangements, the patent achieves reduced circuit area while maintaining manufacturability through standard fabrication processes
4Measurement precision
If pixel density is increased to achieve high-definition display, then display resolution improves, but power consumption per pixel increases
Solution Approach 1:
The patent optimizes the electrical parameters of the transistor channel formation region by controlling metal oxide composition and proportions. This enables high-performance transistors with low off-state current and high mobility, allowing high pixel density implementation while maintaining low power consumption per pixel through parameter optimization rather than increased power supply
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 enables a semiconductor device with low power consumption, high-speed operation, dense display elements, and high pixel density, achieving high-definition and high-luminance displays while reducing power consumption and costs.
Implementation Method 1
A metal oxide that can be used for a semiconductor layer can be formed by a sputtering method
Data Source
AI summary
A semiconductor device with low power consumption is provided. A semiconductor device that operates at high speed is provided. A semiconductor device with a small circuit area is provided. A novel semiconductor device is provided. In the semiconductor device, a signal line is electrically connected to a plurality of pixels between a first node and a second node; an amplifier circuit has a function of amplifying a supplied current and supplying the amplified current to the first node; an analog-to-digital converter circuit has a function of converting a potential of the first node into a first signal, and a function of converting a potential of the second node into a second signal; a sensing circuit has a function of comparing the first signal and the second signal and generating a third signal; and the current amplification factor of the amplifier circuit is determined in accordance with the third signal.