Light Guide Panel Inclined Diffusion Patterns Brightness
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current liquid crystal display (LCD) systems face challenges in achieving high forward-emitted light brightness due to inefficient light guidance in edge-type backlight assemblies, which affects the overall display performance.
Innovation Solution
A light guide panel with a top surface and bottom surface, featuring diffusion patterns with specific inclination angles, is integrated into the backlight unit, along with a prism sheet, to effectively direct light emitted from a light source unit towards the display panel, enhancing light concentration and brightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a conventional light guide panel is used in an edge-type backlight assembly, then the structure is simple, but the forward-emitted light brightness is insufficient
Solution Approach 1:
The light guide panel is segmented into multiple functional regions: a light incident region for receiving light from the light source, and a light emission region for directing light toward the display panel. This segmentation allows each region to be optimized for its specific function, improving overall light guidance efficiency and forward-emitted brightness.
Solution Approach 2:
Different regions of the light guide panel are assigned different optical properties. The light incident region has characteristics optimized for light reception, while the light emission region has characteristics optimized for light directionality. This local differentiation enables the panel to achieve high forward-emitted brightness through targeted optical design in each zone.
2Illumination intensity
If light is emitted in various directions without concentration, then the light source can be simple, but the brightness of forward-emitted light is insufficient
Solution Approach 1:
The light guide panel acts as an intermediary component between the light source and the display panel. It receives light from the light source, processes it through its structured regions, and delivers concentrated light to the display panel, thereby mediating the light transmission path and improving forward-emitted brightness.
Solution Approach 2:
The invention utilizes the thickness dimension of the light guide panel to control light propagation. By designing specific structures within the panel's thickness, light is guided from the incident region through the panel to the emission region, achieving concentration and directionality in the forward emission direction.
3Stability of the object's composition
If the light guide panel does not concentrate light, then the structure can be simple, but the luminance uniformity is poor
Solution Approach 1:
The light guide panel is divided into distinct functional zones including a light incident region and a light emission region. This segmentation enables controlled light distribution across the panel, ensuring uniform luminance output by managing how light propagates through each designated area.
Solution Approach 2:
Different regions of the light guide panel are designed with specific optical characteristics tailored to their functions. The light incident region is optimized for light reception while the light emission region is optimized for uniform light distribution, achieving consistent luminance across the display area through localized optical design.
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
The solution significantly improves the forward-emitted light brightness and uniformity, leading to enhanced display performance with improved luminance uniformity and optical efficiency.
Implementation Method 1
Each of the diffusion patterns includes a first inclined surface which defines a first inclination angle with the base surface and a second inclined surface which adjoins the first inclined surface and defines a second inclination angle with the base surface
Implementation Method 2
The light guide panel changes a path of light so as to guide the light toward the display panel
Implementation Method 3
a prism sheet which is disposed opposite to the top surface of the light guide panel and includes a plurality of prisms
Data Source
AI summary
A light guide panel includes a top surface configured to have first and second sides extending in X- and Y-axis directions, respectively, a bottom surface configured to be disposed opposite to the top surface, and includes a base surface, and a plurality of diffusion patterns which is provided to protrude from, or to be recessed into, the base surface, and each of the plurality of diffusion patterns including a first inclined surface which defines a first inclination angle with the base surface and a second inclined surface which adjoins the first inclined surface and defines a second inclination angle with the base surface, and a first side surface and a second side surface configured to be disposed between the top surface and the bottom surface and face each other, where the first inclination angle ranges from about 1.8 degrees to about 5.7 degrees.