LCD Display Highlighting with Gradual Light Intensity Transition

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Solution Overview

Problem

Existing LCD displays produce a distinct, rigid, and abrupt border between highlighted and non-highlighted areas, which is undesirable and unsightly.

Innovation Solution

A display configuration with a liquid crystal layer, light sources, and walls that create a gradual transition area between highlighted and non-highlighted regions by varying light intensity, using LEDs to illuminate areas and walls to direct light for a smooth transition.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If backlight intensity is increased to highlight a display area, then the highlighting effect is achieved, but an abrupt and rigid border is created between highlighted and non-highlighted areas

Engineering Contradiction:
Improvebacklight intensityVSAvoidborder sharpness
Core Design Contradiction:
Illumination intensityVSShape

Solution Approach 1:

A transition area is introduced between the highlighted display area and the non-highlighted area. This transition area contains light guide elements that gradually reduce light intensity from the highlighted region to the non-highlighted region, creating a smooth gradient effect that eliminates the abrupt border while maintaining the highlighting function

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The light intensity parameter is gradually changed across the transition area from the high intensity of the highlighted region to the lower intensity of the non-highlighted region. This continuous parameter change creates a smooth visual transition rather than an abrupt boundary

Inventive Principle:
Principle #35Parameter changes

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 provides a nearly indistinguishable transition between highlighted and non-highlighted regions, enhancing the visual appeal by eliminating the abrupt border, making the highlighting process more aesthetically pleasing.

Implementation Method 1

The light source includes a plurality of light emitting diodes (LEDs) arranged in a grid pattern

Methodology Applied
Scientific EffectLight Emitting Diode: Light Emitting Diode

Implementation Method 2

The wall is aligned with the transition area and is configured to direct light of the first intensity and light of the second intensity to the transition area

Methodology Applied
Scientific EffectLight reflection and refraction: Reflection

Data Source

PatentUS10144288B2LCD display with highlighting
Publication Date: 2018.12.04 DENSO INTERNATIONAL AMERICA INC
  • US10144288B2 patent drawing
  • US10144288B2 patent drawing

AI summary

A display including a liquid crystal layer, a light source, and a wall. The liquid crystal layer includes a first display area, a second display area, and a transition area therebetween. The light source is configured to generate light of a first intensity to illuminate the first display area with light of the first intensity, and generate light of a second intensity that is greater than the first intensity to illuminate the second display area with light of the second intensity. The wall is opposite to the transition area and is configured to permit passage of light of the first intensity and light of the second intensity to the transition area such that at the transition area there is a gradual transition from light of the second intensity proximate to the second display area to light of the first intensity proximate to the first display area.