Liquid Crystal Display Panel Corner Support via Columnar Frame
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Solution Overview
Problem
In small liquid crystal display devices, such as those for cellular phones or mobile terminals, the existing structures struggle to prevent cracks between the protruding substrate and the cover plate without increasing the device size, as the frame is too small to effectively function as a spacer.
Innovation Solution
A liquid crystal display device design featuring a planar shape with cut-away corners and a columnar frame that rises towards the cover plate, supporting the panel and preventing cracks without enlarging the device, where the columnar part fits into the cut-away corner area and is higher than the first substrate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a wall is formed to rise from the frame to function as a spacer between the protruding substrate and the cover plate, then the crack of the substrate can be prevented, but the device size increases
Solution Approach 1:
The invention transitions from a planar frame structure to a three-dimensional structure by adding a columnar part that rises vertically from the frame. This columnar part is positioned in the cut-away corner area and extends upward to contact the cover plate, creating a spacer function in the vertical dimension without expanding the horizontal footprint of the device.
Solution Approach 2:
The columnar part is nested within the cut-away corner area of the frame, utilizing the existing negative space rather than adding to the overall device dimensions. The columnar part fits into the corner region where material was removed, effectively using the available space efficiently.
2Strength
If the frame is made sufficiently large to provide a wall as spacer, then the liquid crystal display panel can be supported, but the device becomes large
Solution Approach 1:
Instead of making the entire frame larger to provide support, the invention applies support locally at the critical corner areas where cracks are most likely to occur. The columnar parts are positioned specifically at the cut-away corner areas to provide localized support and spacing function.
Solution Approach 2:
The support function is segmented into discrete columnar parts at each corner rather than requiring a continuous large frame structure. Each columnar part independently provides support and spacing at its location, and multiple columnar parts work together to provide overall panel support.
3Ease of manufacture
If a conventional rectangular frame is used, then the manufacturing is simple, but the panel cannot be effectively supported without increasing size
Solution Approach 1:
The frame is designed with cut-away corner areas that create an asymmetric shape from the conventional rectangle. This asymmetric design enables the formation of columnar parts at specific locations to provide support and spacing functions that would not be possible with a symmetric rectangular frame.
Data Source
AI summary
A liquid crystal display device is provided that prevents the cracking of a display panel without an increase in size. The liquid crystal display device includes a liquid crystal display panel, a cover plate arranged to face a surface of the liquid crystal display panel on which an image is displayed, and a backlight arranged to face a back surface of the liquid crystal display panel. The backlight includes a frame facing a peripheral part of the back surface of the liquid crystal display panel. The liquid crystal display panel has a planar shape in which at least one corner part of a rectangle is cut away. The frame includes a columnar part which rises in a direction toward the cover plate and fits in an area where the at least one corner part is cut away.