Display Device Transmitter Receiver Spatial Separation
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Solution Overview
Problem
Existing display devices face challenges in increasing the size of the display unit while minimizing the size of the peripheral units, which house essential components like sensing elements and driving circuits, to enhance the overall display area without compromising functionality.
Innovation Solution
The design incorporates a substrate with a display area and a non-display area, where the light emitting layer is in the display area and the transmitter is in the non-display area, allowing for efficient transmission and reception of sensing signals, such as infrared, with the receiver positioned to receive signals reflected from a target object, and a guide opening in the light emitting layer to facilitate signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the peripheral unit size is reduced to increase the display unit size, then the display area is increased, but the sensing elements and driving circuits face space constraints that may compromise functionality
Solution Approach 1:
The patent positions the transmitter in the non-display area and the receiver in the display area, utilizing spatial separation across different zones of the display device. This dimensional arrangement allows sensing components to be distributed throughout the device structure rather than confined to a single peripheral region, enabling full-screen display coverage while maintaining sensing capabilities through strategic component placement in both display and non-display areas.
2Device complexity
If the transmitter and receiver are both disposed in the non-display area, then the sensing signal transmission is simplified, but the display area is reduced
Solution Approach 1:
The patent divides the sensing signal transmission function across two separate components: a transmitter disposed in the non-display area and a receiver disposed in the display area. This segmentation allows each component to be optimally positioned for its specific function while collectively achieving the sensing objective, thereby maintaining simplified signal transmission architecture without compromising display area.
3Area of moving object
If the receiver is disposed in the display area, then the display area is maximized, but the sensing signal reception may be interfered with by light emitting elements
Solution Approach 1:
The patent implements local quality differentiation by creating a specific region around the receiver where light emitting elements are excluded or restricted. This localized modification ensures that the receiver area maintains optical properties suitable for sensing signal reception, while the rest of the display area retains full light emitting functionality. The light emitting layer is configured to avoid the receiver's sensing region, providing targeted optical protection without compromising overall display performance.
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 enables a larger display area with a reduced non-display area, improving the size ratio and operational efficiency of the display device by effectively utilizing the space for both display and sensing functions.
Implementation Method 1
The transmitter is configured to transmit an infrared (IR) sensing signal to a target object
Implementation Method 2
The receiver is configured to receive the IR sensing signal reflected by the target object
Implementation Method 3
The light emitting layer includes a guide opening overlapping the receiver and transmitting the sensing signal
Data Source
AI summary
A display device includes a display area including pixels and a non-display area adjacent to the display area. A circuit layer is disposed on the display area and the non-display area. A light emitting layer is disposed in the display area and includes a light emitting element defining the pixels. A transmitter is disposed on the circuit layer in the non-display area and transmits a sensing signal. A receiver is disposed in the display area separated from the transmitter and receives the sensing signal. A pixel control circuit for controlling the light emitting element is disposed in the circuit layer in the display area. A driving control circuit is disposed in the circuit layer in the non-display area. The driving control circuit is electrically connected to the transmitter.