Display Device Wire Arrangement for Moisture Resistance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Display devices with color conversion panels are prone to signal distortion and defects due to moisture ingress, leading to issues like signal delays, luminance differences, and visible stripes, especially in high-temperature and high-moisture conditions.
Innovation Solution
The display device incorporates a specific arrangement of wires and encapsulation layers, with certain wires positioned in areas more resistant to moisture ingress, and the use of a sealing member and dummy spacer to minimize gaps and restore forces, ensuring robustness against moisture permeation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wires are positioned in the driving wire area closer to the sealing area, then signal transmission to the gate driver is achieved, but moisture ingress increases capacitance causing signal distortion
Solution Approach 1:
The driving wire area is divided into four distinct areas (first, second, third, and fourth areas) with different moisture resistance characteristics. Wires are selectively positioned in specific areas based on their signal requirements, segmenting the area assignment to balance signal transmission needs against moisture protection.
Solution Approach 2:
Different regions of the driving wire area are assigned different quality characteristics regarding moisture resistance. The encapsulation layer is disposed in specific areas (display area, driving circuit area, and third and fourth areas of driving wire area) while leaving other areas (first and third areas) without encapsulation, creating local variations in moisture protection.
2Object-affected harmful factors
If encapsulation layer covers entire driving wire area, then moisture protection is improved, but signal transmission quality deteriorates due to increased capacitance
Solution Approach 1:
The encapsulation layer is selectively applied only in specific areas (display area, driving circuit area, and third and fourth areas of driving wire area) rather than covering the entire driving wire area. This local quality approach provides moisture protection where needed while maintaining signal transmission quality in areas where wires are positioned without encapsulation.
Solution Approach 2:
The encapsulation coverage is segmented into specific regions, creating a non-uniform protection scheme. The first and third areas of the driving wire area are excluded from encapsulation to maintain low capacitance for signal transmission, while other areas receive encapsulation for moisture protection.
3Reliability
If wires are positioned to avoid organic structure, then signal distortion is reduced, but device complexity increases due to specific area assignments
Solution Approach 1:
The driving wire area is segmented into four distinct areas with specific assignment rules: scan clock signal wires and sensing clock signal wires are disposed in the first and third areas without organic structure, while carry clock signal wires and global clock signal wires are disposed in the second and fourth areas with organic structure. This segmentation provides clear positioning guidelines that reduce design complexity.
Data Source
AI summary
A display device includes a display panel including a display area, a driving circuit area, a driving wire area, and a sealing area. The display panel includes a first substrate, a plurality of light-emitting devices disposed on the first substrate in the display area, a gate driver disposed on the first substrate in the driving circuit area and supplying a signal for driving the light-emitting device, a plurality of wires disposed on the first substrate in the driving wire area and transmitting a clock signal to the gate driver, and an organic structure disposed on the first substrate in the driving wire area, the plurality of wires include a scan clock signal wire for transmitting a scan clock signal, and a sensing clock signal wire for transmitting a sensing clock signal, and the scan clock signal wire and the sensing clock signal wire do not overlap the organic structure.