Under-Display Biometric Image Encryption Using Display Layers
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Solution Overview
Problem
Existing electronic devices using bio information for user authentication face security risks as the stored bio information images can leak outside, compromising security.
Innovation Solution
An electronic device with a display that converts first information into second information through a pattern formed by light emitting units, thin film transistors, and conductive lines, and stores the second information in a memory, ensuring the original image is encrypted and cannot be leaked.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If bio information images are stored in the electronic device for authentication, then user authentication can be performed, but the stored bio information images may leak to outside compromising security
Solution Approach 1:
The patent creates an encrypted copy of the bio information image by processing it through the display structure. The original image is transformed into a second image that passes through the display's light emitting units, TFT layer, and conductive lines, producing a distorted encrypted version that cannot be reverse-engineered to reveal the original bio information
Solution Approach 2:
The patent changes the physical parameters of the image by passing it through the display structure which modifies light transmission characteristics. The display's various layers (light emitting units, TFT layer, conductive lines) alter the image parameters such as light intensity, transmission patterns, and structural distortion, transforming the original image into an encrypted form
2Reliability
If the display structure is used to encrypt bio information images, then security is enhanced, but the device complexity increases
Solution Approach 1:
The patent makes the display structure serve dual functions: it acts as both the user interface display and as an encryption device for bio information images. The same display components (light emitting units, TFT layer, conductive lines) that are necessary for visual output are also utilized to transform and encrypt the stored images, eliminating the need for separate encryption hardware
Solution Approach 2:
The display structure performs self-service by using its own inherent physical structure and light transmission properties to encrypt the bio information images. The display's existing layers and components naturally distort and transform the image patterns without requiring additional external encryption devices or complex processing systems
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
Prevents the leakage of original bio information images, enhancing security performance by storing encrypted versions of the images, thus improving security functions.
Implementation Method 1
the first information is converted into the second information through penetration of the light emitting unit, the TFT layer, and the conductive line
Data Source
AI summary
An electronic device according to various embodiments comprises: a display; an image sensor disposed under the display configured to receive second information based on first information corresponding to light reflected from a subject being converted by passing through the display; a memory; and a processor operatively coupled to the display, the image sensor, and the memory, wherein the display may include: a light emitting unit including a plurality of light emitting diodes for generating light, a TFT layer on which a plurality of thin film transistors (TFTs) are mounted, and a conductive line electrically connected to the plurality of thin film transistors; the first information may be converted into second information by passing through the light emitting unit, the TFT layer, and the conductive line; and the processor may store the second information in the memory.