Wire Grid Polarizer Inner Placement for Thinner Displays
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Solution Overview
Problem
Conventional display devices with OLED and LCD panels are thick due to the need for multiple substrates and a lower polarizer on the outer side, complicating the manufacturing process.
Innovation Solution
A display device design that replaces the lower polarizer with a wire grid polarizer, allowing it to be placed on the inner side of a substrate, reducing the number of substrates needed and incorporating color control light-emitting units, transmittance adjustment pixel units, and a light correction section to emit vertical light rays, thereby reducing thickness and simplifying the manufacturing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a conventional OLED light-emitting panel and LCD light-regulating panel are used with multiple substrates and a lower polarizer on the outer side, then the display device can achieve proper light regulation and display function, but the thickness of the display device becomes large and the manufacturing process becomes complicated
Solution Approach 1:
The patent extracts and removes the lower polarizer from the conventional display structure. By eliminating this component and repositioning the remaining elements, the patent reduces both the number of substrates needed and the overall device thickness, while maintaining the necessary light regulation functionality through the wire grid polarizer positioned on the inner side of the substrate
Solution Approach 2:
The patent repositions the wire grid polarizer from the outer side to the inner side of the substrate, changing its spatial dimension and location. This dimensional repositioning allows for a more compact arrangement of components, reducing the thickness of the display device and simplifying the manufacturing process by enabling direct bonding of fewer substrates
2Device complexity
If multiple substrates are used in the display device structure, then the display device can accommodate all necessary components for light emission and regulation, but the number of substrates cannot be reduced and the manufacturing process becomes complicated
Solution Approach 1:
The patent merges the functions of multiple substrates into a reduced configuration. By eliminating the lower polarizer and repositioning components, the patent enables the OLED panel and LCD panel to be directly bonded with fewer substrates, reducing device complexity and simplifying the manufacturing process while maintaining all necessary light emission and regulation functions
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 results in a thinner display device with a simplified manufacturing process, as it eliminates the need for additional substrates and allows for effective light control and correction, enhancing the display's efficiency and longevity.
Implementation Method 1
a wire grid polarizer and a plurality of transmittance adjustment pixel units arranged sequentially from an inner side of the first substrate towards an inner side of the second substrate
Implementation Method 2
each transmittance adjustment pixel unit includes a liquid crystal layer, as well as a pixel electrode and a common electrode for providing a driving electric field to the liquid crystal layer
Implementation Method 3
The light correction section includes a diffraction grating and a first dielectric layer. The diffraction grating comprises a grating surface and a groove surface
Implementation Method 4
light rays emitted out from the diffraction grating becomes exit light rays perpendicular to the second substrate after being refracted by the light exit surface of the first dielectric layer
Implementation Method 5
The OLED light-emitting panel comprises a substrate provided with an anode (also referred to as an anode substrate), a substrate provided with a cathode (also referred to as a cathode substrate), and an organic light-emitting functional layer arranged therebetween
Data Source
AI summary
The present disclosure relates to the field of display technologies, and discloses a display device for reducing a thickness of the display device, so as to obtain a thinner display device and simplify the manufacture process. The display device includes a first substrate and a second substrate arranged oppositely; as well as a plurality of color control light-emitting units, a wire grid polarizer and a plurality of transmittance adjustment pixel units arranged sequentially from an inner side of the first substrate towards an inner side of the second substrate.