LCOS Display Panel Mask Layer Alignment
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Solution Overview
Problem
Conventional LCOS display panels suffer from mounting errors during assembly, which lead to light-blocking regions incorrectly covering the preset-displaying regions, affecting display quality and yield rate due to mechanical misalignment.
Innovation Solution
The LCOS display panel incorporates a transparent substrate with a mask layer that defines light-transmitting and light-blocking regions, allowing for precise optical alignment between the transparent substrate and the silicon substrate, eliminating the need for a shadow film and reducing mounting errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a shadow film is mechanically assembled with the display panel, then the light-blocking region can cover the non-displaying region, but mounting errors occur causing misalignment between the light-blocking region and the preset-displaying region
Solution Approach 1:
The patent merges the shadow film's light-blocking function directly into the transparent substrate by forming a mask layer on the transparent substrate. This integration eliminates the separate shadow film component and its associated mechanical assembly, thereby removing the source of mounting errors while maintaining the light-blocking function in the non-displaying region.
Solution Approach 2:
The patent replaces the mechanical assembly system (shadow film bound to display panel) with an optical integration system (mask layer formed on transparent substrate). This substitution transitions from mechanical alignment dependent on physical binding to optical alignment based on predefined regional correspondence, eliminating mechanical mounting errors.
2Illumination intensity
If the light-transmitting region area matches the preset-displaying region area, then the display quality is improved, but any mounting error causes the light-blocking region to incorrectly cover the preset-displaying region
Solution Approach 1:
The patent combines the light-blocking function and the displaying region definition into a single integrated structure (transparent substrate with mask layer). This ensures that the light-transmitting region area precisely matches the preset-displaying region area without separate component alignment, maintaining display quality while eliminating the reliability issue of mounting errors affecting yield rate.
3Object-affected harmful factors
If a shadow film is used to block light in the non-displaying region, then reflective light is prevented, but the device complexity increases due to additional components and assembly steps
Solution Approach 1:
The patent extracts the light-blocking function from the separate shadow film component and integrates it directly into the transparent substrate as a mask layer. This extraction eliminates the need for a separate shadow film component and its associated assembly steps, reducing device complexity while maintaining the function of preventing reflective light in the non-displaying region.
Solution Approach 2:
The patent merges the light-blocking function with the transparent substrate structure by forming a mask layer on it. This combination eliminates the separate shadow film component, reducing the number of parts and assembly steps, thereby decreasing device complexity while still preventing unwanted reflective light.
Data Source
AI summary
A liquid crystal on silicon (LCOS) display panel and an electronic device using the same are provided. The electronic device comprises the LCOS display panel and a circuit board. The LCOS display panel comprises a silicon substrate, a transparent substrate and a liquid crystal layer. The transparent substrate has a base plate and a mask layer. The circuit board is electrically connected to the display panel. The transparent substrate is disposed opposite to the silicon substrate, and the liquid crystal layer is positioned between the silicon substrate and the transparent substrate. The base plate has a first surface and a second surface opposite to the first surface that faces the silicon substrate. The mask layer is disposed on the second surface and has at least one opening to form at least one light-transmitting region and one light-blocking region, and the light-transmitting region is a displaying region of the transparent substrate.