Resin Frame Ribs Prevent LCD Panel Deformation
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Solution Overview
Problem
Liquid crystal display devices suffer from display irregularities, such as a whitish appearance, when incorporated into equipment due to external forces causing deformation and cell gap formation.
Innovation Solution
The liquid crystal display device incorporates a structure with a backlight retaining resin frame that includes ribs protruding from openings in the upper frame, which receive a fixing device and a glass protective plate, preventing the upper frame from being pressed down and thus reducing or eliminating display irregularities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the liquid crystal display panel is fixed between upper and lower frames, then the panel is secured in position, but external forces cause deformation and cell gap formation leading to display irregularities
Solution Approach 1:
The upper frame is divided into multiple sections by introducing openings that segment the frame structure. This segmentation allows the frame to better accommodate external forces without transmitting them to the liquid crystal panel, thereby preventing deformation and display irregularities while maintaining fixation stability.
Solution Approach 2:
A resin frame rib is introduced as an intermediary component between the upper frame and the liquid crystal panel. This resin rib absorbs and distributes external forces, acting as a buffer that protects the panel from direct mechanical stress while maintaining the structural integrity and fixation of the display assembly.
2Strength
If the upper frame is made rigid to prevent deformation, then structural strength is improved, but external pressing force causes frame distortion and cracks in the display panel
Solution Approach 1:
The frame structure combines rigid metal frame materials with flexible resin frame ribs. This composite construction allows the metal frame to provide overall structural strength while the resin ribs absorb and distribute external pressing forces, preventing frame distortion and cracks in the display panel through material complementarity.
3Volume of moving object
If the display device is designed with a compact structure, then space utilization is improved, but external forces cause cell gap formation and display quality degradation
Solution Approach 1:
The resin frame rib is strategically positioned at specific locations within the compact frame structure where external forces are most likely to be applied. This localized reinforcement provides targeted protection against deformation and cell gap formation without increasing the overall device volume, thereby maintaining both compactness and display quality uniformity.
Data Source
AI summary
A liquid crystal display device capable of reducing or preventing display irregularities is provided. In the liquid crystal display device including: an upper frame, a lower frame, a BL resin frame and a liquid crystal display panel and used as a display part as incorporated in an equipment, the liquid crystal display panel is fixed by the upper frame (fixation area). The BL resin frame includes BL resin frame ribs serving as a receiving part to receive a fixing device for fixing the liquid crystal display device to the equipment.