Transparent Display Panel Ink-Jet Printing Precision
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Solution Overview
Problem
Current display technologies face challenges in efficiently forming high-resolution transparent display panels with precise ink-jet printing, requiring accurate deposition of light-emitting materials while minimizing material waste and production time.
Innovation Solution
The solution involves a transparent display panel design with a base, pixel defining structures, and light-emitting devices, where the opaque electrode and light-emitting functional layer are stacked with overlapping regions, and a second pixel defining structure is used to optimize the thickness and placement of these layers, allowing for ink-jet printing of the light-emitting functional layer in a larger space that includes both light-emitting and transmission regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If ink-jet printing technology is used to deposit light-emitting materials in pre-formed sub-pixel openings, then material cost and production time are reduced, but manufacturing precision requirements increase
Solution Approach 1:
The pixel defining structure is divided into a first pixel defining structure and a second pixel defining structure, creating separate functional zones. The first structure defines the light-emitting region with precise boundaries, while the second structure provides additional definition in the light transmission region, allowing ink-jet printing to be performed with relaxed precision requirements in different areas.
Solution Approach 2:
The invention introduces a vertical dimension by stacking the first and second pixel defining structures at different heights. The first pixel defining structure is positioned at a first height and the second at a second height, creating a three-dimensional arrangement that enables precise material deposition through multiple layers while maintaining manufacturing efficiency.
2Manufacturing precision
If the light-emitting functional layer is deposited in a larger space including both light-emitting and transmission regions, then ink-jet printing accuracy requirements are reduced, but layer alignment complexity increases
Solution Approach 1:
The pixel defining structure is segmented into first and second structures that are positioned at different heights. The first pixel defining structure defines the light-emitting region boundary, while the second structure provides additional definition. This segmentation allows the light-emitting functional layer to be deposited in a larger area without requiring high precision throughout the entire area, as different regions have different precision requirements.
Solution Approach 2:
The first and second pixel defining structures act as intermediaries that guide and constrain the light-emitting functional layer deposition. By providing physical boundaries at different heights, these structures serve as mediators that simplify the deposition process, allowing the ink-jet printer to deposit materials in a larger area without requiring precise alignment throughout the entire deposition area.
3Loss of substance
If the opaque electrode and light-emitting functional layer are stacked with overlapping regions, then material use efficiency is improved, but structural complexity increases
Solution Approach 1:
The opaque electrode and light-emitting functional layer are merged in the vertical dimension through stacking with overlapping horizontal projections. This merging allows both components to occupy the same spatial footprint, eliminating the need for separate lateral extensions and reducing overall material usage while maintaining functional performance.
Solution Approach 2:
The invention transitions from a lateral arrangement to a vertical stacking arrangement. By placing the opaque electrode and light-emitting functional layer in different vertical layers with overlapping horizontal projections, the design efficiently uses three-dimensional space, reducing material waste without requiring complex lateral structural arrangements.
Data Source
AI summary
A transparent display panel includes a base, a first pixel defining structure and a first light-emitting devices. The first pixel defining structure is disposed on the base and includes a first opening that has a light transmission region and a light-emitting region. The first light-emitting device is disposed on the base and includes an opaque electrode and a light-emitting functional layer. At least part of the opaque electrode is exposed by the first opening, and an orthographic projection of the opaque electrode does not overlap with the light transmission region. The light-emitting functional layer is disposed in the first opening and defined by the first opening. The orthographic projection of the opaque electrode and an orthographic projection of the light-emitting functional layer have an overlapping region, and at least a portion of the overlapping region is within the light-emitting region.