Display Panel Connecting Structure via Insulating Layer Extraction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The manufacturing process of thin film transistor liquid crystal displays (TFT-LCDs) faces challenges in miniaturizing sub-pixels due to difficulties in forming through holes in color filters, which affects alignment accuracy and product yield.
Innovation Solution
A display panel design where the pixel electrode is electrically connected to the transistor without forming a hole in the color filter, with the connecting portion located between the semiconductor layer and the pixel electrode, allowing for higher alignment accuracy and reduced process complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a through hole is formed in the color filter to electrically connect the pixel electrode and transistor, then electrical connection is achieved, but manufacturing difficulty increases and sub-pixel miniaturization is hindered
Solution Approach 1:
The invention extracts the connecting portion from the color filter layer and relocates it to the insulating layer. The connecting hole is formed only in the insulating layer rather than penetrating the color filter, thereby separating the electrical connection function from the color filter structure and eliminating the manufacturing difficulties associated with forming holes in the color filter.
Solution Approach 2:
The insulating layer serves as an intermediary medium that enables electrical connection between the pixel electrode and transistor without requiring holes in the color filter. The connecting portion is formed in this intermediary layer, which simplifies the manufacturing process while maintaining electrical connectivity.
2Reliability
If a through hole is formed in the color filter for electrical connection, then connectivity is achieved, but alignment accuracy deteriorates
Solution Approach 1:
The connecting structure is extracted from the color filter layer and relocated to the insulating layer. This separation eliminates the alignment difficulties between the connecting hole and color filter pattern, as the connecting hole is now formed only in the insulating layer where alignment is easier to achieve.
3Reliability
If a through hole is formed in the color filter, then electrical connection is achieved, but product yield decreases
Solution Approach 1:
The connecting structure is extracted from the color filter layer and relocated to the insulating layer. This relocation eliminates the complex process of forming holes through the color filter, thereby simplifying manufacturing and increasing product yield.
4Reliability
If the connecting portion is formed in the color filter, then electrical connection is achieved, but aperture ratio decreases
Solution Approach 1:
The connecting portion is extracted from the color filter layer and relocated to the insulating layer. This extraction removes the connecting structure from the light transmission path, thereby eliminating its negative impact on the aperture ratio while maintaining electrical connection functionality.
Data Source
AI summary
A display panel and display apparatus, display panel includes an array substrate. Array substrate includes substrate and has display region. Display region includes color filter, pixel electrode, and first transistor that are located on same side of substrate. First transistor includes first semiconductor layer. Along direction perpendicular to plane of substrate, color filter is located between first semiconductor layer and pixel electrode, and first semiconductor layer is electrically connected to pixel electrode through first connecting portion. First connecting portion includes first connecting sub-portion in first connecting hole. Orthographic projection of first connecting sub-portion on plane of substrate does not overlap with orthographic projection of color filter on plane of substrate. Along direction parallel to plane of substrate, first connecting sub-portion at least partially overlaps with color filter. Or, along direction perpendicular to plane of substrate, first semiconductor layer and pixel electrode are located on same side of color filter.