OLED Display Panel Isolation Structure for Light Transmittance
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Solution Overview
Problem
Current OLED display products require performance improvement, particularly in terms of light transmittance to facilitate integration of photosensitive devices or achieve transparent displays.
Innovation Solution
A display panel design featuring a base plate with light-emitting units and an isolation structure that includes light-transmitting connection portions. These connection portions are arranged between adjacent isolation structures, enhancing light transmittance by reducing electrical resistance and diffraction effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If traditional isolation structures are used in OLED display panels, then electrical insulation between adjacent light-emitting units is achieved, but light transmittance in the display area is reduced
Solution Approach 1:
The isolation structure is segmented into multiple parts: a first isolation portion made of insulating material for electrical insulation, and a second isolation portion made of transparent material for light transmittance. This segmentation allows each portion to fulfill its specific function without compromising the other, resolving the contradiction between insulation and transparency.
Solution Approach 2:
Different regions of the isolation structure are assigned different material properties: the first isolation portion uses insulating material where electrical isolation is critical, while the second isolation portion uses transparent material where light transmission is prioritized. This local differentiation optimizes both electrical insulation and optical performance in their respective zones.
2Illumination intensity
If continuous isolation structures are used to ensure electrical insulation, then wiring complexity increases and signal interference occurs, but light transmittance is improved
Solution Approach 1:
The electrical insulation function is extracted from the continuous isolation structure and assigned to the first isolation portion made of insulating material. This allows the second isolation portion to be discontinuous or reduced in complexity while maintaining light transmittance, as the critical insulation function is handled by the dedicated first portion.
Solution Approach 2:
The isolation structure is divided into functional segments where the first isolation portion handles electrical insulation and the second handles light transmission. This segmentation enables the wiring to be simplified in regions where insulation is already provided by the first portion, reducing overall wiring complexity and signal interference while preserving light transmittance.
Data Source
AI summary
A display panel with a first display area, and the display panel includes a base plate, light-emitting units, an isolation structure; each of the light-emitting unit includes a first electrode, a light-emitting functional portion, and a second electrode, the second electrodes of adjacent light-emitting units are spaced apart, the light-emitting units include at least one first light-emitting unit; the isolation structure includes a plurality of first isolation structures, the first isolation structure includes a first physical portion and a first opening portion, the first physical portion is arranged around the first opening portion, the first opening portion exposes at least a portion of the first electrode of the first light-emitting unit, the second electrode of the first light-emitting unit is electrically connected with the first isolation structure, and at least a portion of adjacent first isolation structures are electrically connected through the light-transmitting connection portion.