Transparent Display Gate Lines for Camera Integration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Electronic devices with cameras positioned adjacent to the display suffer from reduced display area due to the need for borders or notches, which interfere with the viewing area and increase the system form factor.
Innovation Solution
The implementation of partial transparent areas in the display, using source and gate lines composed of both opaque and transparent materials with high resistivity characteristics, allows the camera to be positioned behind the display, eliminating the need for borders and notches, and enabling a larger viewing area by separating the gate lines into distinct sets for independent control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a border is provided adjacent to the display to accommodate the camera, then the camera can be positioned, but the display area is reduced and the system form factor increases
Solution Approach 1:
The camera is repositioned from the traditional lateral placement (adjacent to the display) to a depth dimension placement (behind the display). This dimensional change allows the camera to occupy space in the Z-axis rather than requiring additional lateral space, thereby eliminating the need for borders while maintaining camera functionality.
Solution Approach 2:
The camera is nested within the display structure by positioning it behind the display panel. The display panel acts as a container that houses the camera in its rear space, allowing the camera to be integrated into the overall device structure without requiring separate lateral accommodation space.
2Area of stationary object
If a notch is provided adjacent to the display to position the camera, then the border size is reduced, but the viewing area is interfered with and display area is reduced
Solution Approach 1:
Instead of creating a lateral notch in the display plane to accommodate the camera, the solution moves the camera to the depth dimension behind the display. This eliminates the need for notches that would interrupt the viewing area, as the camera occupies space in the Z-axis rather than creating lateral openings.
3Area of stationary object
If transparent materials are used for gate lines to enable camera positioning behind display, then the viewing area increases, but signal degradation occurs due to high resistivity
Solution Approach 1:
The gate lines are segmented into multiple parallel lines rather than using single continuous lines. This segmentation allows the current to be distributed across multiple paths, effectively reducing the overall resistance and compensating for the high resistivity of transparent materials, thereby maintaining signal quality while enabling full-view display coverage.
Solution Approach 2:
The gate lines are constructed using composite material structures combining transparent conductive materials with metallic materials. This composite approach leverages the transparency of materials like ITO while compensating for their high resistivity through the addition of highly conductive metallic layers, achieving both optical transparency and electrical conductivity requirements.
Data Source
AI summary
Example displays having transparent areas for cameras are disclosed. An example display has a first source line including a first portion composed of a first material and a second portion composed of a second material different than the first material. A first gate line includes a first portion composed of a third material and a second portion composed of a fourth material, the fourth material being different than the third material. A second gate line includes a first portion composed of the third material and a second portion composed of the fourth material. The first portion of the source line, the first portion of the first gate line, and the first portion of the second gate line define a non-transparent area of the display. The second portion of the source line, the second portion of the first gate line, and second portion of the second gate line define a transparent area of a display.