Medical Endoscope Display Frame Structure for Uniform LCD Imaging
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Solution Overview
Problem
Conventional liquid crystal displays used in medical endoscopic devices suffer from non-uniform image quality, excessive optical differences in different orientations, and structural instability, leading to potential deformation and increased power consumption due to air layers refracting light.
Innovation Solution
A display device with a modified middle frame structure that supports the display panel, featuring a first part connected to a second part extending around the backlight module, and a stable adhesive layer configuration to reduce glue usage and enhance structural stability, while maintaining uniform image quality and reducing light leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conventional TFT-LCD structure with backlight module and polarizers is used, then the display device achieves basic display function, but the image quality is non-uniform and optical difference in different orientations is large
Solution Approach 1:
The patent applies local quality by optimizing the liquid crystal layer configuration and alignment film orientation in specific regions to achieve uniform image quality across the display while minimizing optical differences in different orientations. The alignment films are configured with specific rubbing directions to control light transmission uniformly.
2Device complexity
If the middle frame structure is simplified to reduce device complexity, then manufacturing becomes easier, but the structure becomes unstable and deformation risk increases
Solution Approach 1:
The middle frame is segmented into multiple functional parts: a first middle frame supporting the display panel, a second middle frame surrounding the backlight module, and connection portions linking them. This segmentation allows each part to perform its specific function while maintaining overall structural stability without excessive complexity.
Solution Approach 2:
The first middle frame and second middle frame are merged through connection portions to form an integrated support structure. This merging provides both structural stability and precise positioning for the display panel and backlight module, reducing deformation risk while maintaining manufacturability.
3Loss of substance
If adhesive layer is reduced to minimize glue usage, then material consumption decreases, but bonding strength may be insufficient
Solution Approach 1:
The adhesive layer is applied selectively in specific regions where bonding is most critical, rather than uniformly across the entire surface. This partial application reduces overall glue consumption while maintaining sufficient bonding strength at key locations such as the connection between the middle frame and display panel.
4Reliability
If the display device structure is optimized for stability, then deformation risk is reduced, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The middle frame structure employs asymmetric design elements, such as connection portions with specific geometries optimized for their particular functions. The first and second middle frames have different configurations suited to their respective roles in supporting the display panel and surrounding the backlight module, achieving stability without uniform complexity throughout.
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 provides improved accuracy and efficiency in medical operations by ensuring stable, uniform image quality and reduced deformation risk, while minimizing glue usage and power consumption.
Implementation Method 1
a first adhesive layer is provided between the cover plate and the display panel
Implementation Method 2
a liquid crystal layer sandwiched between the upper substrate and the lower substrate
Implementation Method 3
The backlight module is arranged on a side of the lower polarizer away from the upper polarizer
Data Source
AI summary
A display device and a medical endoscopic apparatus are provided. The display device includes: a display panel; a cover plate at a light exit side of the display panel; a backlight module, at a side of the display panel away from the cover plate; a middle frame, including: a first part, configured to support the display panel; a second part, connected with the first part and extends from the first part to the side away from the cover plate; the second part is around the backlight module at side of the backlight module; the display device includes a first space between the first part and the cover plate, a first side of the first space is limited by the cover plate, a second side of the first space is limited by the first part, the first side is opposite to the second side of the first space.