Display Panel Non-Integer Light Control Units
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Solution Overview
Problem
Display panels often suffer from the rainbow stripe phenomenon, where human eyes perceive color stripes due to uneven color mixing, affecting visual experience and display quality.
Innovation Solution
A display panel design comprising a liquid crystal display panel and a light control panel, where the light control panel is configured to allow backlight to pass through and control light transmittance, with specific arrangements of mesh lines and signal lines to define color subpixel units and light control units, optimizing the length and width ratios of these units to alleviate rainbow stripes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the light control panel uses integer multiple dimensions for light control units, then the manufacturing and alignment are simplified, but the rainbow stripe phenomenon occurs due to non-uniform light distribution
Solution Approach 1:
The patent changes the dimensional parameters of the light control units from integer multiples of pixel units to non-integer multiples (e.g., 2.00129 times the pixel unit length). This parameter modification disrupts the periodic interference pattern that causes rainbow stripes while maintaining manufacturability through precise control specifications.
Solution Approach 2:
The patent introduces asymmetry by using non-integer ratio dimensions for light control units relative to pixel units. This breaks the symmetric periodic structure that causes constructive and destructive interference of light waves, thereby eliminating the rainbow stripe phenomenon while still allowing for systematic manufacturing approaches.
2Manufacturing precision
If the distance between base substrates is increased, then the assembly tolerance is relaxed, but the display quality and contrast ratio deteriorate
Solution Approach 1:
The patent optimizes the distance parameter between base substrates to a specific range (0.7-1.3 times the sum of substrate thicknesses) rather than using fixed integer multiples or loose tolerances. This precise parameter control achieves both good assembly tolerance and high display quality by balancing mechanical feasibility with optical performance.
3Object-affected harmful factors
If the light control unit dimensions are optimized to non-integer ratios, then the rainbow stripe phenomenon is reduced, but the manufacturing precision requirements increase
Solution Approach 1:
The patent specifies precise dimensional parameters (e.g., 2.00129 times pixel unit length) to eliminate rainbow stripes, but acknowledges and manages the increased manufacturing precision requirements through controlled tolerance ranges and systematic manufacturing approaches, balancing display quality with production feasibility.
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 reduces the rainbow stripe phenomenon, improving display quality by ensuring uniform light emission and reducing the visibility of rainbow stripes, thereby enhancing the visual experience.
Implementation Method 1
an adhesion layer and a first polarizer. The adhesion layer is between the first base substrate and the third base substrate to bond the first base substrate and the third base substrate so that no air layer is between the first base substrate and the third base substrate
Implementation Method 2
the liquid crystal display panel comprises a plurality of mesh lines, the plurality of mesh lines comprise a plurality of first mesh lines extending along a first direction and a plurality of second mesh lines extending along a second direction
Implementation Method 3
the light control panel is configured to allow backlight to be incident into the liquid crystal display panel after passing through the light control panel
Data Source
AI summary
A display panel and a display device are disclosed. The display panel includes liquid crystal display panel, and a light control panel that are stacked; the liquid crystal display panel includes first mesh lines extending along a first direction and second mesh lines extending along a second direction intersecting with the first direction that define color subpixel units; the light control panel allows back light to be enter the liquid crystal display panel after passing through the light control panel, and includes first signal lines extending along the first direction and second signal lines extending along the second direction that define light control units; N color subpixel units continuously arranged and respectively displaying different colors constitute one pixel unit; N is a positive integer; along the first direction, a maximum length of one light control unit is m times a maximum length of one pixel unit; m is a non-integer.