Display Panel Back Cover Air Gap Design
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Solution Overview
Problem
Display devices experience reduced heat emission efficiency and potential image distortion when installed at an angle, leading to afterimages due to varying distances between the display panel and the back cover.
Innovation Solution
A display device design that maintains a predetermined air gap between the display panel and the back cover using a smaller second substrate with a source printed circuit board, a control printed circuit board connected via a signal cable passing through a penetrating hole in the back cover, and fastening tapes to stabilize the air gap and prevent panel deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If an air gap is introduced between the display panel and back cover to prevent deformation and distortion, then the display panel is protected from damage and image distortion, but the heat emission efficiency deteriorates in the center region
Solution Approach 1:
The back cover is designed with different structural characteristics at different locations: the center region has a first curvature radius while the edge region has a second curvature radius, creating local variations in heat dissipation pathways. This allows the air gap to be maintained for protection while providing preferential heat conduction paths at specific locations to improve overall heat emission efficiency.
2Adaptability or versatility
If the display device is installed at an angle, then installation flexibility is improved, but the air gap varies causing heat emission efficiency to deteriorate in the center region
Solution Approach 1:
The back cover incorporates curved surface regions with specific radius values that adapt to different installation angles. The curvature design allows the back cover to maintain optimal contact and air gap configuration regardless of whether the display is mounted flat or at an angle, ensuring consistent heat emission efficiency across various installation states.
3Strength
If the back cover is designed with a specific shape to prevent panel deformation, then protection is improved, but the air gap cannot be maintained consistently leading to image distortion
Solution Approach 1:
The back cover features localized curved surface regions with controlled radius values positioned at specific locations. These curved regions provide mechanical support to prevent panel deformation while maintaining the air gap in critical areas. The strategic placement of curvature ensures both protection and air gap consistency, preventing image distortion.
Data Source
AI summary
A display panel includes a first substrate and a second substrate; a source printed circuit board on the second substrate of the display panel, the source printed circuit board electrically connected to the display panel; a control printed circuit board electrically connected to the source printed circuit board by a signal cable; and a back cover accommodating the display panel including the first and second substrates and the source printed circuit board, and disposed between the source printed circuit board and the control printed circuit board, the back cover including a penetrating hole, through which the signal cable passes and maintaining a space by the signal cable with respect to the display panel, wherein the penetrating hole of the back cover is disposed at a mid-portion of the second substrate in a vertical direction.