Liquid Crystal Display Narrow Frame Light Shielding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional liquid crystal display devices face challenges in achieving a narrow frame design for both the liquid crystal display panel and back light while maintaining mechanical strength and preventing light leakage, as the resin mold used in back lights limits frame narrowing and requires secure fixation.
Innovation Solution
The solution involves using a combination of hot melt resin and oil-based black ink for light shielding, where the hot melt resin is applied to the side surfaces of the liquid crystal display panel and back light to secure their fixation and prevent light leakage, with the oil-based black ink used at corners and areas where hot melt resin application is difficult, ensuring a narrow frame and secure assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the frame width is narrowed to achieve a narrow frame design, then the display area is enlarged, but the mechanical strength of the resin mold deteriorates
Solution Approach 1:
The patent uses a composite structure combining resin mold and metal frame. The metal frame provides the necessary mechanical strength while the resin mold maintains the narrow frame design, resolving the contradiction between enlarged display area and structural strength.
Solution Approach 2:
The frame structure is segmented into two functional parts: the resin mold for light guide and display area definition, and the metal frame for structural support. This segmentation allows each material to perform its optimal function without compromising the other.
2Area of stationary object
If the frame width is narrowed, then the display area is enlarged, but light leakage to the outside increases
Solution Approach 1:
A light-shielding film is introduced as an intermediary layer between the resin mold and the external environment. This film prevents light leakage from the narrow frame structure while maintaining the enlarged display area, addressing the contradiction between display size and light control.
3Area of stationary object
If the frame width is narrowed, then the display area is enlarged, but the fixation between back light and liquid crystal display panel becomes insufficient
Solution Approach 1:
The metal frame serves as a reliable fixation structure that mechanically connects the back light and liquid crystal display panel. This composite approach ensures secure assembly while maintaining the narrow frame design for enlarged display area.
Solution Approach 2:
The metal frame includes curved portions that wrap around and secure the liquid crystal display panel, providing enhanced fixation reliability. The curved structure ensures stable assembly while maintaining the narrow overall frame width.
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
This approach allows for a narrow frame design with reduced light leakage, enhancing the mechanical strength and assembly stability of the liquid crystal display device, suitable for small-sized display devices like smartphones and tablets.
Implementation Method 1
the side surface of the liquid crystal display panel and the side surface of the back light are fixed to each other by the black resin
Implementation Method 2
a light shield film that is different from the black resin is formed on the side surface of the liquid crystal display panel and the side surface of the back light at the corner
Data Source
AI summary
The purpose of the invention is to realize the liquid crystal display device that has narrow frame area and light from the back light does not leak. The structure of the present invention is: A liquid crystal display device having a liquid crystal display panel and a back light comprising; the liquid crystal display panel has a first side, a second side, which crosses the first side, and a corner that connects the first side and the second side, the side surface of the liquid crystal display panel and the side surface of the back light are fixed to each other by the black resin at the first side and at the second side, a light shield film that is different from the black resin is formed on the side surface of the liquid crystal display panel and the side surface of the back light at the corner.