RFID Display Border with Programmable Resonant Circuits
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Solution Overview
Problem
Existing electronic device displays face challenges in hiding internal components, maintaining structural integrity without a display cover layer, and efficiently incorporating identifiers due to the presence of polarizers which reduce light transmission and affect border appearance.
Innovation Solution
The implementation of opaque masking structures and programmable resonant circuits in the inactive area, using thin-film transistor circuitry, to store binary data and provide a wireless identifier, allowing for the concealment of internal components and incorporation of identifiers without affecting the display's appearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a display cover layer is used to provide structural integrity, then the display maintains desired structural strength, but the display introduces undesirable thickness and weight
Solution Approach 1:
The patent removes the display cover layer from the display structure entirely. Instead of using a separate protective cover, the invention relies on the color filter layer and other display layers to provide sufficient structural integrity, thereby eliminating the unwanted thickness and weight that the cover layer would add.
2Strength
If the color filter layer is made thick to provide structural integrity without a cover layer, then the display maintains desired structural strength, but the border appearance is affected by polarizer interference
Solution Approach 1:
The patent divides the border region into multiple functional segments: an opaque masking layer for structural support and aesthetic appearance, and a separate polarizer layer for optical function. This segmentation allows the masking layer to provide structural integrity while the polarizer can be optimized for light transmission without compromising the border appearance.
3Illumination intensity
If black ink is printed under the protective cover glass to hide internal components, then the border appearance is improved, but the display thickness and weight increase
Solution Approach 1:
The patent removes the protective cover glass layer that would be needed to protect the black ink border. By using the color filter layer and opaque masking structures to provide both structural integrity and border appearance, the invention eliminates the need for an additional protective glass layer, thereby reducing display thickness and weight.
4Loss of information
If laser engraving is used to create an identifier in the display border, then the display can be labeled with identification information, but the display structure becomes more complex and manufacturing becomes difficult
Solution Approach 1:
The patent combines the identifier storage function with the existing opaque masking layer in the border region. By forming programmable resonant circuits within the masking layer structure, the invention integrates identification capabilities into the existing border design without adding separate identifier components or complicating the manufacturing process.
5Illumination intensity
If opaque masking structures are used to hide internal components in the inactive area, then the border appearance is improved, but internal components remain visible through the polarizer
Solution Approach 1:
The patent uses a composite structure combining an opaque masking layer with a polarizer layer. The opaque masking layer provides the primary function of hiding internal components, while the polarizer layer adds optical functionality. The combination of these materials creates a multi-functional border structure that addresses both appearance and component concealment requirements.
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 solution effectively hides internal components, maintains structural integrity, and allows for the inclusion of identifiers, enhancing the display's appearance and usability by utilizing programmable resonant circuits to store information wirelessly.
Implementation Method 1
An array of resonant circuits may be formed from thin-film transistor circuitry or other circuits in the inactive area under the opaque masking structures. The resonant circuits may be programmed so that they store embedded binary data.
Implementation Method 2
The resonant circuits may be wirelessly probed using a wireless reader.
Data Source
AI summary
A display may have an active area surrounded by an inactive border area. The display may be a liquid crystal display having a liquid crystal layer sandwiched between a color filter layer and a thin-film transistor layer. An upper polarizer may have a polarized central region that overlaps the active area of the display. The upper polarizer may also have an unpolarized portion in the inactive border area overlapping the border structures. The border structures may include colored material such as a white layer on the inner surface of the thin-film transistor layer. Binary information may be embedded into an array of programmable resonant circuits. The binary information may be a display identifier or other information associated with a display. The programmable resonant circuits may be tank circuits with adjustable capacitors, fuses, or other programmable components.