Guide Panel Elastic Stoppers for LCD Light Guide Plate Stability
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Solution Overview
Problem
Liquid crystal display (LCD) devices face challenges in maintaining brightness and image quality due to light leakage and potential damage from movement of the light guide plate, which is exacerbated by the need for additional elements to prevent movement and maintain the optical gap between the light guide plate and the LED assembly, especially in designs aiming for slim thickness and narrow bezels.
Innovation Solution
The implementation of a guide panel with a double structure and elastic stoppers to securely hold the light guide plate in place, preventing movement and maintaining the optical gap, thereby enhancing brightness and image quality without the need for additional elements that could cause light leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If additional elements are added to prevent movement of the light guide plate, then the stability of the light guide plate is improved, but the device complexity increases and light leakage may occur
Solution Approach 1:
The patent combines the light guide plate with the guide panel into an integrated structure. The guide panel serves dual functions: it provides structural support and simultaneously prevents movement of the light guide plate through its geometric configuration and connection to the housing, eliminating the need for separate additional restraining elements.
Solution Approach 2:
The guide panel is designed to perform multiple functions: it guides the light from the LED assembly, supports the light guide plate, prevents plate movement through its structural design, and maintains the optical gap. This multi-functionality reduces overall device complexity while ensuring stability.
2Illumination intensity
If additional elements are added to maintain the optical gap, then the brightness is improved, but the device complexity increases
Solution Approach 1:
The guide panel is integrated with the housing structure, combining multiple functions into a single component. This integration maintains the optical gap consistently without requiring separate additional elements, thereby preserving brightness while reducing device complexity.
3Area of stationary object
If the bezel is made narrower, then the area of the display is improved, but the light leakage increases
Solution Approach 1:
The guide panel is integrated with the housing to form a unified structure that prevents light leakage at the bezel edges. This integration ensures that even with a narrower bezel, light is contained properly within the display area, maintaining display area while preventing light leakage.
4Device complexity
If the light guide plate is allowed to move, then the device complexity is reduced, but the brightness decreases due to light leakage
Solution Approach 1:
The guide panel is integrated with the housing structure, combining multiple functions into a single component. This integration maintains the optical gap consistently without requiring separate additional elements, thereby preserving brightness while reducing device complexity.
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 effectively prevents light leakage and damage to the LEDs, maintaining high brightness and image quality while allowing for a lightweight, slim, and narrow bezel design by ensuring the light guide plate remains stable and the optical gap is consistently maintained, even under varying temperatures.
Implementation Method 1
at least two elastic stoppers 135 are formed at the guide panel 130
Implementation Method 2
a light guide plate 123, over which the LED assembly 129 is disposed
Implementation Method 3
LCD devices use the optical anisotropy and polarization properties of liquid crystal molecules of a liquid crystal layer to produce an image
Implementation Method 4
LCD devices use the optical anisotropy and polarization properties of liquid crystal molecules
Data Source
AI summary
An LCD device includes a liquid crystal panel (110); a backlight unit (120) disposed at a rear side of the liquid crystal panel (110) and including an LED assembly (129) and a light guide plate (123), wherein the light guide plate (123) has a first surface (123a) facing the LED assembly (129) and a second surface (123b) opposite to the first surface (123a); a cover bottom (150) including a horizontal plane (151) over which the backlight unit (120) is disposed and a side (153) perpendicular to the horizontal plane (151); a guide panel (130) including a side wall (131) and a horizontal portion (133), wherein the side wall (131) has a first vertical portion (131a) surrounding an outer surface of the side (153) of the cover bottom (150), and the horizontal portion (133) is vertically bent from the first vertical portion (131a) and supports the liquid crystal panel (110), wherein at least one elastic stopper (135) is formed at the side wall (131) and contacts the second surface (123b).