Display Corner Member Reflects Light to Eliminate Dark Areas

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Solution Overview

Problem

Display apparatuses with non-emissive panels, such as LCDs, face challenges in uniform light irradiation from a light source disposed around one edge, leading to luminance differences and dark areas, particularly at corners, due to inadequate reflection of light to these areas.

Innovation Solution

The display apparatus incorporates a light source module positioned along one edge, with a first reflecting member and a second reflecting member to direct light uniformly across the panel, and a corner member with a high reflectance surface to prevent dark areas by reflecting light to the panel, especially in corner regions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a light source is disposed around one edge of the display panel, then the device complexity is reduced, but light uniformity deteriorates resulting in luminance difference and dark areas at corners

Engineering Contradiction:
Improvelight source configurationVSAvoidlight uniformity
Core Design Contradiction:
Device complexityVSIllumination intensity

Solution Approach 1:

The patent applies local quality by providing corner members with high reflectance surfaces specifically at the corner regions where light deficiency occurs. Instead of uniformly treating the entire light path, the solution targets the specific problematic areas (corners) with enhanced reflective properties to redirect light precisely where needed, thereby improving local illumination without requiring a complete redesign of the light source configuration.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The corner members act as intermediary elements between the light source and the display panel corners. These intermediaries (corner members with high reflectance surfaces) capture light that would otherwise miss the corner regions and redirect it toward the corners, serving as a mediating structure that bridges the gap between the edge-mounted light source and the corner areas requiring illumination.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Illumination intensity

If reflecting members are added to improve light uniformity, then light uniformity improves, but device complexity increases

Engineering Contradiction:
Improvelight uniformityVSAvoidreflecting member configuration
Core Design Contradiction:
Illumination intensityVSDevice complexity

Solution Approach 1:

Rather than implementing complex reflecting member systems across the entire display structure, the patent applies reflecting surfaces locally at the corner regions through corner members. This localized approach provides the necessary light redirection functionality only where it is most needed (at the corners), avoiding the complexity of comprehensive reflecting member coverage while achieving improved light uniformity.

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The patent segments the light reflection function by separating it into distinct components: the primary light source along the edge and the corner members at specific corner locations. This segmentation allows the system to achieve improved light uniformity through targeted corner reflection rather than requiring a complex integrated reflecting member system across the entire display structure.

Inventive Principle:
Principle #1Segmentation

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 configuration ensures improved light uniformity across the display panel, reducing dark areas and enhancing the overall luminance consistency, thereby improving the reliability and performance of the display apparatus.

Implementation Method 1

a first reflecting member disposed adjacent to at least one of the pair of first sides, the first light reflecting member comprising a light reflecting surface and configured to reflect light emitted from the light source module toward the display panel

Methodology Applied
Scientific EffectLight reflection: Reflection

Implementation Method 2

a second reflecting member comprising a light reflecting surface and configured to reflect the light emitted by the light source module toward the first reflecting member side

Methodology Applied
Scientific EffectLight reflection: Reflection

Implementation Method 3

a corner member comprising a light reflecting surface disposed between the pair of second sides and both ends in the longitudinal direction of the light source module. The corner member is configured to reflect light transmitted to the corner member toward the first reflecting member, the second reflecting member or the display panel side

Methodology Applied
Scientific EffectLight reflection: Reflection

Data Source

PatentUS10120237B2Display apparatus
Publication Date: 2018.11.06 SAMSUNG ELECTRONICS CO LTD
  • US10120237B2 patent drawing
  • US10120237B2 patent drawing
  • US10120237B2 patent drawing

AI summary

The present disclosure relates to a display apparatus that reflects light emitted from a light source to a display panel side through a reflecting member without having a configuration corresponding to a light guide plate, in which light emitted from a light source substantially uniformly reaches a reflecting member, a corner member may be disposed on the corner side of the cover member where the light source module is not disposed so that the light incident on the corner side is reflected toward the display panel side to irradiate light to the display panel side.