Waveform Shading Lines in Dimming LCD Panels
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Solution Overview
Problem
Liquid crystal display devices suffer from poor picture contrast and dark-state light leakage due to structural characteristics, and the introduction of a dimming liquid crystal panel to address these issues results in moire patterns and visible grids and dark spots, degrading the viewing experience.
Innovation Solution
A display panel comprising a dimming liquid crystal panel stacked with a display liquid crystal panel, where the dimming liquid crystal panel features a second grid structure with intersecting shading lines that adjust light transmission and include auxiliary shading lines to minimize visual resolution differences and reduce moire patterns, dark spots, and grids.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a dimming liquid crystal panel is introduced to improve picture contrast and reduce dark-state light leakage, then picture contrast is improved, but moire patterns and visible grids and dark spots appear
Solution Approach 1:
The dimming liquid crystal panel is divided into multiple dimming pixels arranged in an array, with each dimming pixel independently controllable. The grid structure is segmented into first shading lines extending in waveform along row direction and second shading lines intersecting with the first shading lines, creating a fine-grained segmentation that reduces moire patterns while maintaining contrast improvement.
Solution Approach 2:
The shading lines are designed with different characteristics in different regions: first shading lines extend in waveform along the row direction, while second shading lines intersect with them. This local differentiation in shading line configuration optimizes light blocking at specific locations to eliminate moire patterns and dark spots while preserving the overall contrast enhancement function.
2Object-affected harmful factors
If a dimming liquid crystal panel is stacked with display liquid crystal panel to reduce dark-state light leakage, then dark-state light leakage is reduced, but visible grids and dark spots degrade viewing experience
Solution Approach 1:
The dimming liquid crystal panel is segmented into multiple dimming pixels arranged in an array, with each dimming pixel independently controllable. The grid structure is segmented into first shading lines extending in waveform along row direction and second shading lines intersecting with the first shading lines, creating a fine-grained segmentation that reduces moire patterns while maintaining contrast improvement.
Solution Approach 2:
The shading lines are configured in two-dimensional intersecting patterns: first shading lines extend in waveform along the row direction, while second shading lines intersect with them in the column direction. This two-dimensional shading network effectively blocks light leakage from multiple angles and positions, eliminating visible grids and dark spots while maintaining the dark-state light leakage reduction function.
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 effectively enhances picture quality by reducing moire patterns, dark spots, and grids, improving contrast and overall display experience, especially in HDR displays, with finer area dimming and natural gray scale transitions.
Implementation Method 1
a display liquid crystal panel, comprising a plurality of sub-pixels defined by a first grid structure and arranged in an array; and a dimming liquid crystal panel, located on a light incident side of the display liquid crystal panel and stacked with the display liquid crystal panel
Implementation Method 2
the dimming liquid crystal panel comprising a plurality of dimming pixels defined by a second grid structure and arranged in an array, and the second grid structure comprising a plurality of first shading lines extending in a waveform along a row direction; wherein the dimming liquid crystal panel further comprises a plurality of second shading lines extending along the row direction, and the second shading lines are intersected with the first shading lines
Data Source
AI summary
This disclosure relates to a display panel and a display device. The display panel includes: a display liquid crystal panel, including a plurality of sub-pixels defined by a first grid structure and arranged in an array; and a dimming liquid crystal panel, located on a light incident side of the display liquid crystal panel and stacked with the display liquid crystal panel, the dimming liquid crystal panel including a plurality of dimming pixels defined by a second grid structure and arranged in an array, and the second grid structure comprising a plurality of first shading lines extending in a waveform along a row direction; wherein the dimming liquid crystal panel further includes a plurality of second shading lines extending along the row direction, and the second shading lines are intersected with the first shading lines.