Polarizer-Free Display Panel Using Grating and Lens Structure Layers
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Solution Overview
Problem
The high manufacturing cost and reduced reliability of liquid crystal display devices due to the use of polarizers, which increase the cost and complexity of the display device while reducing its reliability.
Innovation Solution
A display panel design that eliminates the need for polarizers by incorporating a grating layer and a lens structure layer with curved grooves on the substrates, along with a liquid crystal layer of varying refractive indices, to modulate light propagation, allowing for display functionality without polarizers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If polarizers are used in the liquid crystal display device, then the display function is achieved, but the manufacturing cost increases and reliability decreases
Solution Approach 1:
The patent removes the polarizer component from the display device structure entirely. Instead of using polarizers to control light transmission, the invention employs a grating layer that diffracts light and a liquid crystal layer that modulates the diffracted light to achieve display functionality without polarizers, thereby reducing device complexity and improving reliability
Solution Approach 2:
The patent replaces the optical polarization mechanism (mechanical/optical system using polarizers) with a diffraction-based mechanism using a grating layer and liquid crystal modulation. This substitution eliminates the need for polarizers while achieving the same light control function, reducing manufacturing cost and improving reliability
2Reliability
If polarizers are used in the liquid crystal display device, then the display function is achieved, but the manufacturing cost increases
Solution Approach 1:
The patent removes the polarizer component from the display device structure entirely. Instead of using polarizers to control light transmission, the invention employs a grating layer that diffracts light and a liquid crystal layer that modulates the diffracted light to achieve display functionality without polarizers, thereby reducing device complexity and improving reliability
Solution Approach 2:
The patent replaces expensive polarizer materials with a grating layer that can be fabricated using standard semiconductor manufacturing techniques. The grating layer, combined with the liquid crystal layer, achieves the desired optical effect at lower cost, making the display device more economically viable
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 design reduces the cost and complexity of the display device, improves reliability, and maintains high light transmittance by effectively controlling light propagation using the grating and lens structure layers, thereby eliminating the need for polarizers.
Implementation Method 1
the refractive index of the liquid crystal layer is a first refractive index, and the light emitted from the backlight module and passing through the convex lens formed by the grating layer and the liquid crystal layer is concentrated in the second shading region
Implementation Method 2
the liquid crystal layer has a first refractive index and a second refractive index, the first refractive index is greater than the second refractive index
Implementation Method 3
controlling the display device to be in a display state or a non-display state, and further including: in the display state, applying a voltage to a first electrode layer and a second electrode layer of the display panel, where a refractive index of the liquid crystal layer is a second refractive index
Implementation Method 4
a surface of the lens structure layer away from the second base includes grooves each having a curved surface, and the grooves are recessed from the surface of the lens structure layer away from the second base toward the second base
Data Source
AI summary
A display panel, a display device, and a display method are provided. A first light-shielding layer and a grating layer are arranged on a first base to form an array substrate of the display panel, a second light-shielding layer and a lens structure layer are arranged on a second base to form an opposite substrate of the display panel, grooves recessed toward the second base are arranged on the lens structure layer, the first light-shielding layer includes first light-shielding regions and first gap regions which are alternately arranged, the first gap regions are within orthographic projections of the grooves onto the first light-shielding layer, the second light-shielding layer includes second blocking regions and second gap regions which are alternately arranged, and a projection of an apex of the curved surface of the groove onto the second blocking layer is located in the second blocking region.