Dual-Lens Subpixels for Wide- and Narrow-View Display Modes

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Solution Overview

Problem

Existing display apparatuses struggle to selectively control viewing angles and reduce bezel size while maintaining luminance uniformity, particularly in vehicle dashboards where driver distraction must be minimized.

Innovation Solution

A display apparatus with a display panel divided into active and non-active areas, featuring sub-pixels with adjustable viewing modes and lenses to control light emission, and a mode controller to independently drive narrow-view and wide-view modes, along with a low potential power line to suppress voltage fluctuations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a single viewing mode is used for the entire display panel, then the structure is simple, but the viewing angle cannot be selectively controlled for different areas

Engineering Contradiction:

Improveviewing angle controlVSAvoiddisplay structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The display panel is divided into multiple active areas, each capable of operating in independent viewing modes (wide-view or narrow-view). Each active area contains its own mode controller that can be selectively activated, allowing different regions to display different content at different viewing angles simultaneously. This segmentation enables selective viewing angle control without requiring a completely different display structure.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The display panel incorporates dual light emitting diodes (first and second LEDs) in each sub-pixel, along with corresponding lenses, that can be dynamically switched between wide-view and narrow-view modes. The mode controller dynamically activates either the first LED with its lens or the second LED with its lens based on the desired viewing mode, enabling flexible adaptation of viewing angles without physical reconfiguration.

Inventive Principle:

Principle #15Dynamics

2Area of stationary object

If the mode controller is disposed in the non-active area, then the active area is maximized, but the bezel area increases

Engineering Contradiction:

Improveactive areaVSAvoidbezel size

Core Design Contradiction:

Area of stationary objectVSLength of moving object

Solution Approach 1:

The mode controller is disposed within the active area rather than in the non-active area or bezel region. By utilizing the vertical dimension and spatial arrangement within the active pixel structure, the controller occupies minimal space that does not significantly reduce the effective display area. This dimensional repositioning allows the controller to be integrated without increasing bezel size while still maximizing the active display area.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Object-affected harmful factors

If viewing angle is limited to narrow mode, then driver distraction is reduced, but user accessibility to display content is reduced

Engineering Contradiction:

Improvedriver distractionVSAvoidcontent accessibility

Core Design Contradiction:

Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The display panel is segmented into multiple active areas that can operate in different viewing modes simultaneously. The area closest to the driver can be configured in narrow-view mode to minimize distraction and limit viewing to the intended audience, while other areas can operate in wide-view mode to maintain accessibility for multiple users. This spatial segmentation allows simultaneous optimization for both safety and usability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different regions of the display panel are assigned different viewing mode characteristics based on their functional requirements. The narrow-view mode is applied locally to areas where driver distraction must be minimized, while wide-view mode is applied to areas where multi-user accessibility is important. This local differentiation of viewing properties allows the system to optimize for specific functional requirements in different spatial zones.

Inventive Principle:

Principle #3Local quality

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 allows for selective viewing angle control, reduced bezel size, and improved luminance uniformity across the active area, enhancing user experience and safety by minimizing distractions in vehicle environments.

Implementation Method 1

a first lens which refracts light from the first light emitting diode

Methodology Applied

Scientific EffectRefraction: Refraction

Implementation Method 2

a second lens which refracts light from the second light emitting diode

Methodology Applied

Scientific EffectRefraction: Refraction

Data Source

PatentUS12451058B2Display apparatus including display panel having active area with sub pixels and mode controller disposed in active area that supplies mode signal to the sub pixels

Publication Date: 2025.10.21 LG DISPLAY CO LTD

AI summary

A display panel including an active area in which a plurality of pixels including a plurality of sub pixels is disposed and a non-active area disposed so as to enclose the active area and a mode controller which is disposed in the active area and which supplies a mode signal to the plurality of sub pixels, wherein each of the plurality of sub pixels includes a first light emitting diode, a first lens which refracts light from the first light emitting diode, a second light emitting diode which emits a same color light as the first light emitting diode and a second lens which refracts light from the second light emitting diode and has a shape different from a shape of the first lens.