Multi-View Display Light Guide Panel Resolution

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Solution Overview

Problem

Multi-view mode display devices suffer from reduced image resolution and difficulties in manufacturing due to the use of parallax barriers, which limit the number of viewing zones and compromise image quality and substrate integrity.

Innovation Solution

A display device with multiple viewing zones utilizing a light guide panel, such as a lenticular-lens array, to guide images from adjacent columns to respective viewing zones, maintaining or improving horizontal resolution and using data interpolation to minimize vertical resolution loss, while simplifying the substrate removal process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a parallax barrier is used to achieve multi-view mode display, then multiple viewing zones can be created, but image resolution is reduced and substrate integrity is compromised

Engineering Contradiction:

Improvemulti-view mode displayVSAvoidimage resolution

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The patent removes the parallax barrier component entirely and replaces it with a light guide panel that uses refraction to achieve the same multi-view function. This extraction of the problematic component eliminates the resolution loss and substrate damage while preserving the multi-view capability.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The light guide panel acts as an intermediary between the display panel and the viewer's eye. It uses refraction to redirect light from specific sub-pixels to specific viewing zones, achieving the parallax barrier function without the physical barrier that causes resolution loss and substrate damage.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If a parallax barrier is used to create multiple viewing zones, then different images can be displayed to different viewers, but substrate removal becomes difficult and product efficiency decreases

Engineering Contradiction:

Improvemultiple viewing zonesVSAvoidsubstrate removal process

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

By removing the parallax barrier component, the patent eliminates the difficult substrate removal process entirely. The light guide panel is applied as a separate layer that does not require removal of underlying substrate material, significantly improving ease of manufacture.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent replaces the mechanical parallax barrier system with an optical refraction system using the light guide panel. This substitution eliminates the need for mechanical substrate removal and simplifies the manufacturing process while maintaining the multi-view display function.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Adaptability or versatility

If original image data is sampled to fit display panel constraints, then multiple images can be displayed simultaneously, but horizontal resolution is reduced

Engineering Contradiction:

Improvesimultaneous multi-image displayVSAvoidhorizontal resolution

Core Design Contradiction:

Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

The patent segments the display panel into specific sub-pixel groups (odd and even columns) that are independently controlled. This segmentation allows different images to be displayed to different viewing zones without sampling, as each segment can output full-resolution data for its designated zone.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent uses the vertical dimension (odd/even row grouping) in combination with horizontal segmentation to create multiple viewing zones. This dimensional approach allows full horizontal resolution to be maintained while achieving multi-view functionality through the interaction of vertical and horizontal segmentation.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

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 enhances image resolution by maintaining horizontal resolution and improving perceived image density, while reducing substrate removal challenges and increasing product efficiency.

Implementation Method 1

utilizing a light guide panel, such as a lenticular-lens array, to guide images from adjacent columns to respective viewing zones

Methodology Applied

Scientific EffectRefraction: Refraction

Data Source

PatentUS9165491B2Display device having multiple viewing zones and converting horizontally-arranged RGB subpixel data for output on square-shaped vertically-arranged RGB subpixels

Publication Date: 2015.10.20 LG DISPLAY CO LTD

AI summary

A display device having multiple viewing zones includes a display panel including a plurality of pixels in a matrix form, each pixel including red, green and blue sub-pixels arranged in a vertical direction; and a light guide panel guiding a first image emitted from the pixels in first columns among the plurality of pixels to a first viewing zone and a second image emitted from the pixels in second columns among the plurality of pixels to a second viewing zone, wherein the first column is adjacent to the second column.