Eye Tracking Display With Merged Light-Emitting Elements
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Solution Overview
Problem
Conventional VR or AR devices with eye tracking functions are bulky due to their components, leading to high power consumption and large size, which hinders the development of lightweight, high-resolution, and reliable electronic devices with compact designs.
Innovation Solution
An electronic device with an eye tracking function is designed, incorporating a display system that includes a first light-emitting element for infrared light and a second light-emitting element for visible light, both integrated with a sensor portion, utilizing a substrate configuration that allows for compact integration and efficient power management, enabling eye tracking without adding bulk or hindering display functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional VR or AR devices include display, light source, camera, and sensors, then eye tracking function is achieved, but housing becomes bulky and power consumption increases
Solution Approach 1:
The patent combines the infrared light-emitting element and visible light-emitting element into a single layer structure, integrating multiple functions (display and eye tracking) into one compact unit. This merging eliminates the need for separate housings for display components and eye tracking sensors, directly resolving the contradiction between achieving eye tracking function and maintaining compact housing size
Solution Approach 2:
The display device is designed to serve multiple functions simultaneously: it acts as both a visible light display and an infrared light source for eye tracking. The single layer structure enables the same physical component to perform dual roles, reducing overall device bulk while maintaining reliable eye tracking functionality
2Reliability
If conventional VR or AR devices include multiple sensors and components, then eye tracking function is achieved, but power consumption becomes high
Solution Approach 1:
By merging the infrared and visible light-emitting elements into a single layer, the patent reduces the total number of independent components and their associated control circuits. This integration lowers power consumption while maintaining reliable eye tracking function
Solution Approach 2:
The multi-functional display device reduces overall system power consumption by eliminating redundant components. The same structure serves both display and eye tracking purposes, reducing the total energy required compared to separate dedicated components
3Reliability
If conventional VR or AR devices include multiple sensors and components, then eye tracking function is achieved, but device size becomes large
Solution Approach 1:
The patent merges infrared and visible light-emitting elements into a single layer, dramatically reducing the volume required for eye tracking components. This integration allows compact device design while maintaining reliable eye tracking function
Solution Approach 2:
By positioning the infrared and visible light-emitting elements in the same layer (two-dimensional integration rather than three-dimensional stacking), the patent achieves compact volume while maintaining all necessary eye tracking functions
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 results in a compact, low-power, high-resolution electronic device with an eye tracking function, providing a reliable and stress-free user experience by integrating eye tracking capabilities without increasing the device's size or weight, while maintaining high display quality.
Implementation Method 1
the first light-emitting element has a function of emitting infrared light; the light-receiving element has a function of detecting the infrared light that is emitted from the first light-emitting element and reflected by an eyeball of a user
Implementation Method 2
the light-receiving element has a function of detecting the infrared light that is emitted from the first light-emitting element and reflected by an eyeball of a user
Data Source
AI summary
An electronic device having an eye tracking function is provided. The electronic device includes a display device and an optical system. The display device includes a first light-emitting element, a second light-emitting element, a sensor portion, and a driver circuit portion. The sensor portion includes a light-receiving element. The first light-emitting element has a function of emitting infrared light or visible light. The second light-emitting element has a function of emitting light of a color different from that of light emitted from the first light-emitting element. When the first light-emitting element emits infrared light, the light-receiving element has a function of detecting the infrared light that is emitted from the first light-emitting element and reflected by an eyeball of a user. When the first light-emitting element emits visible light, the light-receiving element has a function of detecting the visible light that is emitted from the first light-emitting element and reflected by the eyeball of the user. The first light-emitting element and the second light-emitting element are placed in one layer. The layer where the first light-emitting element and the second light-emitting element are positioned overlaps with the sensor portion.