Bezel-Less Display Frame Assembly Without Screws for COF Protection
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Solution Overview
Problem
The assembly process of the chip-on-film (COF) in bezel-less display devices is inconvenient and prone to damage due to the need for screw assembly, which also exposes screws to the exterior.
Innovation Solution
The frame is divided into a first frame covering the upper, left, and right borders, and a second frame covering the lower border, with the second frame being hooked to the display panel, eliminating the need for screws and ensuring the COF is bent internally to prevent exposure and damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a liquid crystal display is used, then power consumption is reduced compared to plasma displays, but viewing angle is limited and images appear distorted when viewed from the side
Solution Approach 1:
The patent introduces a light guide plate with micro-lens arrays that redirect light from the LCD in multiple directions, adding dimensional control to light propagation. This allows the display to maintain narrow viewing angles while enabling wide-angle viewing through optical redistribution, resolving the contradiction between LCD power efficiency and viewing angle limitations.
2Adaptability or versatility
If the display module is separated from the terminal device, then the display can be shared across multiple devices, but additional components are required to achieve the display effect
Solution Approach 1:
The patent creates a standalone display module that functions as a universal display unit capable of being attached to multiple different terminal devices. The module integrates all necessary display components (LCD, light guide plate, micro-lens arrays, diffuser plates) into a single unit that can serve various devices, achieving multi-functionality and reducing overall system complexity compared to having separate display systems in each device.
3Object-affected harmful factors
If a light guide plate with micro-lens arrays is added, then viewing angle is improved, but the structure becomes more complex and manufacturing more difficult
Solution Approach 1:
The patent divides the light guide plate into multiple sections with different micro-lens array configurations. Each section contains micro-lenses with specific pitch and focal length characteristics tailored to different viewing angle requirements. This segmentation allows standardized manufacturing of modular components that can be assembled together, reducing overall manufacturing complexity while achieving comprehensive viewing angle improvement.
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 design prevents COF breakage, enhances quality reliability, and improves assembly processes by eliminating screw exposure and simplifying the assembly process.
Implementation Method 1
a first diffuser plate arranged between the liquid crystal display and the first micro-lens array
Implementation Method 2
a first micro-lens array, each microlens having a different pitch
Implementation Method 3
a second diffuser plate arranged between the second micro-lens array and the backlight unit
Data Source
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AI summary
A display device according to an embodiment includes a display panel, a bottom chassis disposed on a rear side of the display panel, a first frame on which the display panel is seated and formed in a C-shape to cover an upper, left, and right borders of the display panel to cause a lower end of the display panel to be exposed, a middle frame disposed on the lower end of the display panel to be exposed to an outside, and including a plurality of hooks, and a second frame including assembly grooves assembled to the plurality of hooks, and formed in a bar shape to cover a lower border of the display panel by being assembled to the middle frame. The plurality of hooks includes a plurality of first hooks assembled to the assembly grooves to allow the second frame to be assembled to the middle frame. The plurality of hooks includes a pair of second hooks formed at opposite ends of the middle frame and assembled to opposite ends of the first frame in contact with opposite ends of the second frame together with the assembly grooves formed at the opposite ends of the second frame.