Display Device Active-Region Receiver for High-Speed Optical Communication
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Solution Overview
Problem
Existing display devices face limitations in optical communication due to the need for a separate optical signal receiver, which can increase bezel area and reduce active region, and may limit communication speed.
Innovation Solution
Incorporating a light receiving transistor and light receiving layer within the active region of the display device, eliminating the need for a separate optical signal receiver and enabling high-speed optical communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a separate optical signal receiver is provided in the display device, then optical communication function is achieved, but the bezel area increases and active region area decreases
Solution Approach 1:
The patent merges the optical signal receiver function with the existing light emitting diode structure by incorporating a light receiving layer within the active region, eliminating the need for separate optical communication components and thus preserving the active region area while achieving optical communication functionality
Solution Approach 2:
The light emitting diode structure is designed to perform dual functions: light emission for display purposes and light reception for optical communication. The light receiving layer is integrated into the existing structure, allowing the same physical space to serve both display and communication functions
2Adaptability or versatility
If a separate optical signal receiver using photodiode is used, then optical communication is enabled, but the communication speed is limited by the receiver area
Solution Approach 1:
The patent combines the light receiving layer with the light emitting diode structure, utilizing the entire active region for light reception. This integration allows the communication speed to be determined by the overall active region area rather than a limited separate receiver area, thereby achieving high-speed optical communication
3Adaptability or versatility
If existing communication technology (4G, 5G) is used in the display device, then information processing functions are achieved, but crosstalk occurs in the same frequency band
Solution Approach 1:
The patent replaces electromagnetic wave-based communication (4G, 5G) with optical communication using visible light. By substituting the communication mechanism from radio frequency electromagnetic waves to optical waves, the system achieves information processing capability without the crosstalk problems associated with frequency band interference
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 allows for optical communication without increasing the bezel area and ensures sufficient communication speed by utilizing the active region for both light emission and reception.
Implementation Method 1
perform communication using an optical signal receiver including a photodiode for receiving a signal transmitted by the light emitting diode
Data Source
AI summary
Embodiments of the present disclosure relate to a display device and a server. More specifically, there can be provided a display device which includes a light receiving transistor and a light receiving layer positioned in an active region, and provides an optical signal receiver in the active region, so that there is no need to secure a separate space for the optical signal receiver and high-speed optical communication is possible.