Light Guide Plate Cutting Area Brightness Uniformity
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Solution Overview
Problem
Existing display modules with cutting areas in the light guide panel suffer from reduced brightness in these areas and around them, leading to a darkened reel transmission area in game machines, making it difficult for users to focus on the game.
Innovation Solution
A light guide panel with a transmission portion, featuring cutting areas where a predetermined member configured to react to light is attached to the inner surfaces, either as a reflector to prevent brightness reduction or as a diffuser to remove hot spots, ensuring uniform light transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a cutting area is formed in the light guide panel to allow transmission of light and viewing of rear objects, then the transmission function is improved, but the brightness in the cutting area and surrounding areas is reduced
Solution Approach 1:
A light shielding member is introduced as an intermediary component between the light guide panel and the rear surface. This member includes a light shielding portion that blocks light and a light emitting portion that emits light to compensate for brightness loss in the cutting area, thereby maintaining uniform brightness while preserving transmission functionality
Solution Approach 2:
The light shielding member is configured with specific optical parameters: the light shielding portion has high light shielding properties, while the light emitting portion has specific emitability parameters. By controlling the area ratio and optical characteristics of these portions, the brightness distribution is adjusted to maintain uniformity across the entire panel
2Reliability
If the light shielding member has high light shielding property to prevent light leakage, then the light control is improved, but the brightness in the cutting area may be reduced
Solution Approach 1:
The light shielding member combines two functional portions in one component: the light shielding portion that prevents light leakage and the light emitting portion that compensates for brightness loss. This merging allows simultaneous achievement of light control and brightness maintenance without requiring separate components
Solution Approach 2:
The light shielding portion, which could potentially cause brightness reduction, is designed to work together with the light emitting portion. The light emitted by the light emitting portion compensates for the light blocked by the light shielding portion, converting the potential harm into a beneficial brightness compensation mechanism
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 effectively prevents brightness reduction in cutting areas and around them, maintaining uniform light transfer and improving the operational performance of display modules in game machines by ensuring a clear and focused game experience.
Implementation Method 1
a light shielding member stuck to a peripheral edge of an aperture formed in the light guide plate
Data Source
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AI summary
The present invention relates to a light guide plate comprising a plurality of cutting areas, the light guide plate capable of solving the problem of brightness degradation between the plurality of cutting areas by attaching a predetermined member, which is reactive to light, to at least one of the inner sides of the cutting areas. Particularly, the present invention allows the light guide plate to evenly transmit light generated from a light source to the forward side part, by selecting and attaching, to the respective inner side of the plurality of cutting areas, a first member for resolving brightness degradation of the light or a second member for resolving brightness degradation of the light and offsetting excessively reflected light. The present invention relates to the light guide plate comprising at least one cutting area, the light guide plate maintaining the clarity of a display screen by treating (for example, etching or attaching a diffuser sheet) at least one of the inner sides through which light transmitted from a light-emitting part provided on the outer side of the light guide plate passes, so as to remove hot spots generated when the light passes through. The present invention can enable a user to focus on a game by solving the problem of a relatively darker cutting area through which a reel positioned on the backside of the display is seen.