Under-Display Optical Area Line Layout for Bezel-Free Light Reception
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Solution Overview
Problem
Display devices face challenges in incorporating optical electronic devices without increasing the bezel size or forming notches, as existing designs often neglect the characteristics of optical areas, leading to suboptimal light transmission and display performance.
Innovation Solution
A display device design that places optical electronic devices under the display area, utilizing a light transmission structure and arranging signal lines suitable for the optical area's characteristics, thereby reducing the non-display area and ensuring effective light reception and display functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an optical electronic device is installed in the front portion of the display device to receive incident light, then the optical electronic device can be effectively exposed to light, but the bezel size increases or a notch/hole must be formed in the display area
Solution Approach 1:
The optical electronic device is relocated from the front surface (2D plane) to the rear side of the display device, utilizing the third dimension (depth) to resolve the spatial conflict between light reception requirements and display area preservation
Solution Approach 2:
Instead of placing the optical electronic device on the front surface to receive light, the invention inverts the approach by positioning it on the rear side, where it receives light that has transmitted through the display panel from the front
2Reliability
If an optical electronic device is installed in the front portion of the display device, then the optical electronic device can be effectively exposed to incident light, but a notch or hole must be formed in the display area
Solution Approach 1:
The optical electronic device is relocated from the front surface (2D plane) to the rear side of the display device, utilizing the third dimension (depth) to resolve the spatial conflict between light reception requirements and display area preservation
Solution Approach 2:
The display panel itself serves as an intermediary medium, allowing light to pass through it to reach the optical electronic device on the rear side, thereby eliminating the need for notches or holes in the display area
3Ease of manufacture
If signal lines are arranged in the optical area, then electrical connections can be established, but light transmission performance deteriorates
Solution Approach 1:
The optical area is designed with differentiated local properties: it maintains light transmission characteristics suitable for optical device operation while incorporating signal lines only in specific regions or patterns that minimize light blocking, creating spatially varying functionality within the same area
Solution Approach 2:
The signal lines in the optical area are designed with modified parameters such as reduced width, increased spacing, or specific routing patterns compared to conventional signal lines, thereby reducing their light-blocking effect while maintaining electrical functionality
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 allows optical electronic devices to function without being exposed, maintains display quality, and reduces bezel size, enhancing design flexibility while ensuring normal display driving and light reception.
Implementation Method 1
a first display region in which a plurality of first pixels is disposed and a second display region in which a plurality of second pixels is disposed
Data Source
Figure 1A
Figure 1B
Figure 1C
AI summary
A display device includes a display panel including a plurality of subpixels (SP1-SP6) and a plurality of signal lines (HL1, HL2), the display panel defining a display area (DA) having a first optical area (OA1) and a normal area (NA) outside of the first optical area (OA1), and a non-display area (NA). The first optical area (OA1) includes a plurality of light emitting areas and a plurality of first transmission areas (TA1), and the normal area (NA) includes a plurality of light emitting areas. The display panel includes a plurality of first horizontal lines (HL1), among the signal lines, disposed through the first optical area (OA1). The first horizontal lines (HL1) include a bypass line (HL1_BP) connected to subpixels (SP1, SP2) at both boundaries (LBA, RBA) of the first optical area (OA1) and not connected to other subpixels inside of the first optical area (OA1), and a non-bypass line (HL1_NBP) connected to the subpixels (SP3-SP6) at both boundaries (LBA, RBA) of the first optical area (OA1) and the subpixels inside of the first optical area (OA1).