Functional Panel Step Structure for Crosstalk-Reduced Light Emission
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Solution Overview
Problem
Existing display devices and semiconductor technologies face challenges in minimizing crosstalk and optimizing light-emitting regions within functional panels, leading to inefficiencies in light emission and display performance.
Innovation Solution
A functional panel design incorporating a first element with a light-transmitting electrode and a layer containing a light-emitting material, where the insulating film has a step-like cross-sectional shape to create a thin portion for the light-emitting material, inhibiting current flow and concentrating light-emitting regions, thereby reducing crosstalk and enhancing panel reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional flat insulating film structure is used, then the manufacturing process is simple, but light-emitting regions are not concentrated and crosstalk occurs
Solution Approach 1:
The insulating film is segmented into multiple regions with different thicknesses (first region with thickness T1, second region with thickness T2 where T1 < T2), creating distinct functional zones that concentrate light emission and prevent crosstalk between adjacent pixels
Solution Approach 2:
Different regions of the insulating film are given different thicknesses to perform different functions: the thinner first region concentrates light emission in specific areas, while the thicker second region provides insulation and prevents current spread to adjacent pixels
2Reliability
If the insulating film thickness is increased to prevent current spread, then crosstalk is reduced, but light emission efficiency decreases
Solution Approach 1:
The insulating film thickness is optimized locally: thinner in regions where light emission is desired (first region with thickness T1) to maintain efficiency, and thicker in regions where current containment is needed (second region with thickness T2) to prevent crosstalk
3Use of energy by moving object
If the light-emitting material layer is made thinner to improve light extraction, then light emission efficiency increases, but current containment becomes difficult
Solution Approach 1:
The light-emitting material layer thickness is optimized locally: thinner in regions corresponding to the first region of the insulating film to improve light extraction efficiency, and thicker in regions corresponding to the second region to maintain current containment and prevent spread to adjacent pixels
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 effectively concentrates light-emitting regions and reduces crosstalk, resulting in a more convenient, useful, and reliable functional panel with improved display performance.
Implementation Method 1
The first electrode has a light-transmitting property
Implementation Method 2
a layer containing a light-emitting material, and the layer containing a light-emitting material includes a region interposed between the first electrode and the second electrode
Data Source
AI summary
A novel functional panel that is highly convenient, useful, or reliable is provided. The functional panel includes a first element, a first reflective film, and an insulating film. The first element includes a first electrode, a second electrode, and a layer containing a light-emitting material; the layer containing a light-emitting material includes a region interposed between the first electrode and the second electrode; the first electrode has a light-transmitting property; and the first electrode has a first thickness. The first electrode is interposed between a region of the first reflective film and the layer containing a light-emitting material, and the first reflective film has a second thickness. The insulating film includes a first opening portion, and the first opening portion overlaps with the first electrode. The insulating film has a first step-like cross-sectional shape, and the first step-like cross-sectional shape surrounds the first opening portion. The first step-like cross-sectional shape includes a first step, and the first step is larger than or equal to a thickness obtained by adding the second thickness to the first thickness.