Optical Frame for Zero Bezel Display Devices
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Solution Overview
Problem
Conventional liquid crystal display (LCD) devices face challenges in achieving a narrow bezel and reducing the non-active area due to the placement of light sources and optical sheets, which limits the active display area.
Innovation Solution
The implementation of an optical frame that provides light to the edges of the display panel, supporting the panel and ensuring uniform light distribution across the entire display area, while using a lightweight and diffusive material like polycarbonate or polymethylmethacrylate, and incorporating a light guide panel with groove patterns and micro patterns to enhance light diffusion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the light source is disposed inward into the area corresponding to the guide panel or case top, then the backlight unit can be compactly arranged, but it becomes difficult to realize a narrow bezel
Solution Approach 1:
The patent extracts the light source from the conventional backlight unit location and relocates it to the frame structure. This separation allows the backlight unit to be thinner while the frame provides both structural support and light emission functions, enabling narrow bezel design without compromising backlight unit compactness
Solution Approach 2:
The frame is designed to serve multiple functions simultaneously: it provides structural support for the display panel, acts as a light source through integrated LEDs, and serves as a decorative element. This multi-functionality eliminates the need for separate guide panels and case tops, achieving narrow bezel while maintaining compact arrangement
2Reliability
If a mechanism for fixing the optical sheet is separately provided, then the optical sheet can be securely mounted, but the bezel area increases
Solution Approach 1:
The patent merges the optical sheet fixation function with the frame structure. The frame integrates both the fixation mechanism and the optical sheet into a unified assembly, eliminating separate fixation components and reducing the bezel area while maintaining secure mounting of the optical sheet
3Stability of the object's composition
If structures such as the guide panel or case top are provided, then the display panel can be supported and fixed, but the active area of the display device is reduced
Solution Approach 1:
The patent extracts the display panel support function from separate guide panels and case tops and integrates it into the frame structure. This eliminates the need for additional support structures that would reduce the active display area, while the frame maintains structural stability and panel fixation
Solution Approach 2:
The frame is designed to simultaneously provide structural support, fixation, and light emission functions. By consolidating multiple functions into the frame, the patent eliminates separate guide panels and case tops, maximizing the active display area while maintaining display panel stability
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 solution enlarges the active display area, reduces manufacturing costs, and allows for a thinner display device by eliminating the need for a guide panel or case top, achieving a zero bezel design.
Implementation Method 1
an optical frame supporting the display panel and providing light transferred from the backlight unit to a whole area of the display panel
Implementation Method 2
incorporating a light guide panel with groove patterns and micro patterns to enhance light diffusion
Data Source
AI summary
Discussed is a display device. The display device can include an optical frame, which provides light up to an edge of a display panel, thereby enlarging an active area of the display device.