Display Frame Holes and Backplane Protrusions for Thermal Deformation Control
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Solution Overview
Problem
Display devices with frames that shrink in extreme environments, such as high or low temperatures, can cause abnormal color displays due to deformation, particularly at the corners, where the frame squeezes the display panel, affecting the liquid crystal molecules and backlight emission.
Innovation Solution
A display device design featuring a frame with holes and a backplane with protrusions that are embedded in the holes, constraining the deformation of the frame and reducing the squeezing force on the display panel, thereby minimizing abnormal color displays. The backplane includes a main plane and side walls with protrusions positioned near angles and corners to counteract frame shrinkage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the frame is made without holes and protrusions, then the frame structure is simple and easy to manufacture, but the frame shrinks in extreme environments causing abnormal color display
Solution Approach 1:
The frame is segmented by introducing multiple holes at different positions, dividing the continuous frame structure into separate regions. This segmentation allows different parts of the frame to deform independently under thermal stress, preventing uniform shrinkage that causes display abnormalities while maintaining overall structural integrity.
Solution Approach 2:
Protrusions are added at specific local positions on the backplane, particularly at corners and edges where frame shrinkage has the greatest impact on the display panel. These localized structural modifications provide targeted resistance to deformation at critical areas without requiring complex changes to the entire frame structure.
2Reliability
If protrusions are added to the backplane to constrain frame deformation, then abnormal color display is reduced, but the manufacturing process becomes more complex
Solution Approach 1:
The protrusions are integrated into the backplane as a single molded component rather than separate parts. The backplane is formed with protrusions already incorporated during the injection molding process, eliminating the need for additional assembly steps and maintaining ease of manufacture while providing the desired mechanical constraint function.
Solution Approach 2:
The protrusions are designed to fit into corresponding holes in the frame, creating a nested relationship where the backplane features are embedded within the frame structure. This nesting provides effective mechanical constraint while using simple geometric forms that are easy to manufacture through conventional molding processes.
Data Source
AI summary
This application discloses a display device. The display device includes a display module, a frame surrounding the sides of the display module, a backlight module stacked with the display module, and a backplane. The frame includes holes. The backplane includes a main plane, side walls, and protrusions. The main plane is located on a side of the backlight module away from the display module. The side walls extend from the edges of the main plane toward the display module and are perpendicular to the main plane. The protrusions are located on the side walls and each of the protrusions is embedded in a corresponding one of the holes of the frame.