OLED Naked-Eye 3D Display Screen Thickness and Brightness

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Solution Overview

Problem

The existing grating-type naked-eye 3D display devices suffer from increased thickness due to the need for a parallax barrier and decreased image brightness due to color resist in the liquid crystal screen's color film substrate.

Innovation Solution

A barrier type naked-eye 3D display screen comprising an OLED screen and a liquid crystal screen without a color resist in the color film substrate, where the OLED screen produces alternately dark and bright color fringes to generate 3D images, integrating the functions of the backlight module and parallax barrier to reduce thickness and enhance brightness.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a parallax barrier is arranged between the backlight module and the liquid crystal screen, then the 3D display function is achieved, but the thickness of the display device increases

Engineering Contradiction:
Improve3D display functionVSAvoidthickness of display device
Core Design Contradiction:
ReliabilityVSLength of stationary object

Solution Approach 1:

The patent merges the backlight module and parallax barrier into a single integrated OLED screen structure. The OLED screen simultaneously performs the functions of backlight illumination and parallax barrier, eliminating the need for a separate parallax barrier component. This integration directly reduces the overall thickness of the display device while maintaining the 3D display function.

Inventive Principle:
Principle #5Merging (Combining)

2Ease of manufacture

If a color resist is provided in the color film substrate of the liquid crystal screen, then color display is achieved, but the transmittance decreases and image display brightness is seriously affected

Engineering Contradiction:
Improvecolor display capabilityVSAvoidimage display brightness
Core Design Contradiction:
Ease of manufactureVSIllumination intensity

Solution Approach 1:

The patent extracts and removes the color resist layer from the color film substrate. Instead of using color resist to achieve color display, the system relies on the inherent color emission capabilities of the OLED screen. This extraction eliminates the light-absorbing color resist layer, thereby significantly improving the transmittance and image display brightness while maintaining color display capability.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent replaces the traditional liquid crystal color filtering mechanism (which requires color resist) with an OLED-based color emission mechanism. The OLED screen generates colors through electroluminescence of organic materials, substituting the passive optical filtering approach with an active light emission approach, which inherently has higher transmittance and brightness.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

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 increases display brightness while decreasing the thickness of the 3D display screen by eliminating the need for a parallax barrier and color resist, achieving a colorized stereo image through the OLED screen's self-illumination and alternately dark and bright fringes.

Implementation Method 1

The OLED screen comprises a color OLED array serving as a luminous layer

Methodology Applied
Scientific EffectElectroluminescence: Electroluminescence

Implementation Method 2

The liquid crystal screen comprises a color film substrate having no color resist

Methodology Applied
Scientific EffectLiquid crystal optical modulation: Liquid Crystals

Data Source

PatentUS10242609B2Barrier type naked-eye 3D display screen and display device
Publication Date: 2019.03.26 BOE TECHNOLOGY GROUP CO LTD
  • US10242609B2 patent drawing
  • US10242609B2 patent drawing
  • US10242609B2 patent drawing

AI summary

The present disclosure discloses a barrier type naked-eye 3D display screen and a display device. The barrier type naked-eye 3D display screen comprises an OLED screen and a liquid crystal screen, a light emergent surface of the OLED screen facing a light incident surface of the liquid crystal screen, wherein the liquid crystal screen comprises a color film substrate having no color resist; the OLED screen comprises a color OLED array serving as a luminous layer thereof, and a drive array connected to and driving the luminous layer so that the OLED screen can produce alternately dark and bright color fringes, which can form a first color image and a second color image having a parallax via the liquid crystal screen, to form a 3D image.