Display Base Plate Excavation Layout for Higher Transmittance
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Solution Overview
Problem
High-resolution displaying products suffer from lower transmittance due to superfluous film layers in the active area, which reduce light transmission.
Innovation Solution
The displaying base plate incorporates an excavation area on the auxiliary film layer in the opening area, removing unnecessary film layers in the active area to increase transmittance, and employs a top-grid structure with optimized thin-film transistors made of different materials for the active and non-active areas to enhance light transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If auxiliary film layers are kept in the opening area to ensure circuit functionality, then device reliability is improved, but transmittance deteriorates due to light blocking
Solution Approach 1:
The patent extracts the auxiliary film layer from the opening area by creating an excavation area that removes the auxiliary film layer only in the opening area, while retaining it in the non-opening area. This selective removal reduces light blocking in the opening area while preserving circuit functionality where the auxiliary film layer is still present.
Solution Approach 2:
The patent applies local quality by creating different structural configurations in different areas: the opening area has an excavated structure with removed auxiliary film layer for high transmittance, while the non-opening area maintains the complete auxiliary film layer structure for circuit functionality. This localized differentiation resolves the contradiction between transmittance and reliability.
2Reliability
If more film layers are added to ensure sufficient circuit driving capability, then device reliability is improved, but transmittance deteriorates due to increased light absorption
Solution Approach 1:
The patent extracts unnecessary film layers from the opening area through the excavation area, removing the auxiliary film layer specifically where it blocks light. This selective extraction maintains voltage retention and circuit functionality while eliminating light blocking in the opening area.
Solution Approach 2:
The patent segments the auxiliary film layer structure into two distinct regions: the opening area where the auxiliary film layer is removed to maximize transmittance, and the non-opening area where the auxiliary film layer is retained for circuit functionality. This segmentation allows simultaneous optimization of both transmittance and voltage retention.
3Ease of manufacture
If conventional thin-film transistor structure is used, then manufacturing simplicity is maintained, but transmittance deteriorates due to superfluous film layers in the active area
Solution Approach 1:
The patent takes out the auxiliary film layer from the opening area through the excavation area, removing superfluous film layers that block light while maintaining the overall conventional thin-film transistor structure. This selective removal improves transmittance without fundamentally changing the manufacturing process.
Solution Approach 2:
The patent incorporates the excavation area formation as a preliminary step during the thin-film transistor manufacturing process, creating the transmittance-optimized structure before subsequent manufacturing steps. This preliminary action ensures high transmittance is built into the structure from the beginning without adding complex post-processing steps.
Data Source
AI summary
A displaying base plate and a manufacturing method thereof, and a displaying device. The displaying base plate includes an active area and a non-active area located at the periphery of the active area, wherein the active area includes an opening area and a non-opening area. The displaying base plate includes a substrate and a thin-film transistor disposed on one side of the substrate, wherein the thin-film transistor includes a grid electrode, an active layer, a source-drain electrode and an auxiliary film layer, an excavation area is disposed on the auxiliary film layer, and an orthographic projection of the excavation area on the substrate at least partially covers the opening area.