Gaze-Responsive Semiconductor Display for Lower-Power HMDs
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Solution Overview
Problem
Wearable electronic devices, such as head-mounted displays (HMDs), face challenges in providing high immersion and realistic sensations due to perceivable pixels, high power consumption, and production costs, while also needing to be lightweight to prevent user fatigue.
Innovation Solution
A semiconductor device with a display apparatus that includes a line-of-sight sensor and arithmetic portion to enhance image definition in a specific region, using neural networks for image processing, and a dual-display region system with mirrors and lenses to project images alongside external light, achieving high pixel density and low power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If separate display apparatuses are provided for right eye and left eye, then display quality and immersion are improved, but power consumption and production costs increase
Solution Approach 1:
The patent combines separate display apparatuses for right and left eyes into a single display apparatus that can display images to both eyes simultaneously. This merging approach maintains high display quality while reducing power consumption and production costs by eliminating redundant components.
Solution Approach 2:
The display apparatus is designed with multi-functionality to serve both eyes simultaneously. By incorporating dual display regions and optical components (mirrors and lenses), the single display apparatus achieves the function previously requiring two separate apparatuses, thereby reducing overall system complexity and resource consumption.
2Manufacturing precision
If separate display apparatuses are provided for right eye and left eye, then display quality and immersion are improved, but production costs increase
Solution Approach 1:
The patent merges separate display apparatuses into a single integrated unit, reducing component count and assembly complexity. This consolidation directly lowers production costs while maintaining the high display quality achieved through dual-eye support.
Solution Approach 2:
The display apparatus incorporates universal optical components (mirrors and lenses) that can direct images to both eyes from a single display region, eliminating the need for two separate display systems and reducing manufacturing expenses.
3Weight of moving object
If HMD is made lightweight, then user fatigue is reduced, but display quality and immersion may be compromised
Solution Approach 1:
By merging optical functions into a single display apparatus with shared mirrors and lenses, the patent reduces the overall weight of the HMD while maintaining high display quality. The integrated design eliminates redundant components that would increase weight without compromising visual performance.
4Manufacturing precision
If pixel density is increased to minimize pixel perception, then immersion is improved, but power consumption increases
Solution Approach 1:
The patent applies partial action by selectively increasing pixel density only in the first display region where high immersion is critical, while using standard pixel density in the second display region. This selective approach achieves the desired immersion effect while minimizing overall power consumption compared to uniformly high pixel density across the entire display.
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 provides a display apparatus with improved display quality, reliability, reduced power consumption, and lower production costs, while maintaining a lightweight design, enhancing user experience by minimizing pixel perception and fatigue.
Implementation Method 1
The line-of-sight sensor portion has a function of obtaining first information showing a direction of a line of sight of a user
Implementation Method 2
The first mirror reflects the projected first image toward the third mirror
Implementation Method 3
The second mirror reflects the projected second image toward the fourth mirror
Implementation Method 4
The third mirror transmits first external light and reflects the first image
Implementation Method 5
The fourth mirror transmits second external light and reflects the second image
Implementation Method 6
The first lens is placed between the first display region and the first mirror. A first image displayed on the first display region is projected onto the first mirror through the first lens
Implementation Method 7
The second lens is placed between the second display region and the second mirror. A second image displayed on the second display region is projected onto the second mirror through the second lens
Data Source
AI summary
A semiconductor device having favorable display quality is provided. The semiconductor device is provided with a display portion, a line-of-sight sensor portion, a control portion, and an arithmetic portion. The line-of-sight sensor portion has a function of obtaining first information showing a direction of a user's line of sight. The arithmetic portion has a function of determining a first region including a gaze point of the user on the display portion with use of the first information and a function of increasing a definition of an image displayed on the first region. Light emitted from the display portion may be used to obtain the first information showing the direction of the line of sight.