Display Panel Pixel Segmentation for Viewing Angle Control
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Solution Overview
Problem
Conventional display panels struggle to adjust viewing angles without compromising resolution, particularly in scenarios where a narrow viewing angle is desired for privacy purposes.
Innovation Solution
The display panel incorporates first and second pixels with main and auxiliary light emitting devices, along with a light blocking member, allowing for controlled light emission and reception to adjust viewing angles without reducing resolution. The light blocking member strategically blocks light emitted in specific directions, enabling the display to function with either wide or limited viewing angles based on input modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a light blocking member is used to limit viewing angle for privacy, then user privacy is improved, but the display resolution deteriorates due to light loss
Solution Approach 1:
The pixel structure is segmented into multiple sub-pixels (first main light emitting device, first auxiliary light emitting device, second main light emitting device, second auxiliary light emitting device) within each pixel area. This segmentation allows selective control of light emission from different sub-pixels to achieve viewing angle limitation while preserving resolution by maintaining the integrity of each pixel's light output in the intended viewing direction.
Solution Approach 2:
The light blocking member is configured to block light only in specific directions (side viewing angles) while allowing light to pass through in the intended forward direction. This local quality approach ensures that resolution is maintained for the primary viewing angle while privacy is protected from side views.
2Object-affected harmful factors
If the viewing angle is narrowed for privacy purposes, then privacy protection is improved, but the light emission intensity deteriorates
Solution Approach 1:
Multiple light emitting devices (main and auxiliary devices) are merged within each pixel structure and controlled to emit light in a coordinated manner. This merging allows the display to maintain sufficient light emission intensity in the intended viewing direction while blocking light from escaping at side angles, thus preserving both brightness and privacy.
Solution Approach 2:
The light emitting devices are dynamically controlled to adjust their emission characteristics based on the desired viewing angle mode. By dynamically managing which sub-pixels emit light and at what intensity, the system maintains optimal brightness for the primary viewing direction while achieving privacy protection through controlled light distribution.
3Adaptability or versatility
If auxiliary light emitting devices are added to each pixel to control viewing angle, then viewing angle adjustability is improved, but the device complexity increases
Solution Approach 1:
The auxiliary light emitting devices serve multiple functions: they assist in producing the required color output for each pixel and simultaneously enable viewing angle control through coordinated emission patterns. This multi-functionality reduces the need for separate privacy control mechanisms, thereby managing complexity while achieving viewing angle adjustability.
Solution Approach 2:
The patent introduces a new dimension of control by adding auxiliary light emitting devices that can be independently controlled within each pixel. This additional degree of freedom enables viewing angle adjustment without fundamentally redesigning the entire display structure, managing complexity through incremental dimensional expansion.
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 solution allows the display panel to maintain resolution even when displaying images at narrow viewing angles, ensuring user privacy by controlling light emission and reception effectively.
Implementation Method 1
a light blocking member disposed on the first pixels and the second pixels, and where the light blocking member blocks a portion of light emitted from the first pixels and a portion of light emitted from the second pixels
Data Source
AI summary
A display panel includes first pixels which emit light of different colors, a second pixels which emit light of different colors, a light blocking member on the first and second pixels to block a portion of light emitted therefrom. Each of the first and second pixels includes a pixel circuit, a main light emitting device connected to the pixel circuit, and an auxiliary light emitting device which emits light of a same color as the main light emitting device and is connected to the main light emitting device. The main light emitting device of a first pixel and the auxiliary light emitting device of a second pixel are disposed in a first unit pixel area, and the main light emitting device of the second pixel and the auxiliary light emitting device of the first pixel are disposed in a second unit pixel area adjacent to the first unit pixel area.