OLED Display Panel Thickness Reduction via Integrated Liquid Crystal Grating
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Solution Overview
Problem
Conventional light-barrier 3D OLED display panels are thick due to the need for multiple substrates and adhesives, failing to meet requirements for thinness and lightness.
Innovation Solution
The OLED display panel design reduces thickness by using a first and second substrate with OLED devices, an encapsulation layer, polarization layer, strip electrodes, and a liquid crystal layer, where the electrodes' pitch and voltage control enable 2D and 3D displays without equal voltage input during 3D mode, utilizing indium tin oxide for the first strip electrodes and corresponding second strip electrodes with a larger pitch.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional light-barrier 3D display uses multiple substrates and adhesives, then the 3D display function is achieved, but the overall thickness becomes relatively thick
Solution Approach 1:
The patent combines the OLED display panel and liquid crystal grating into a single integrated structure. The liquid crystal layer is directly formed between the OLED substrate and the upper substrate, eliminating the need for separate LCD panel and adhesive layers. This merging of functions into one unified structure achieves the 3D display function while reducing overall thickness.
Solution Approach 2:
The patent removes the backlight module from the conventional LCD-based light barrier 3D display structure. By using OLED technology that emits light directly, the system extracts and eliminates the bulky backlight unit, achieving thinner overall thickness while maintaining the light barrier 3D display function.
2Reliability
If four substrates are used in the conventional light-barrier 3D display, then the 3D display structure is complete, but the requirements for lightness and thinness are not met
Solution Approach 1:
The patent merges the OLED substrate with the lower substrate by directly bonding them together, eliminating the need for a separate adhesive layer. This reduces the number of discrete components from four substrates to effectively three functional layers, achieving structural completeness while reducing thickness.
Solution Approach 2:
The patent uses thin film structures for the liquid crystal layer and polarizing layers, replacing thicker conventional adhesive and sealant layers. This substitution with thin-film technology maintains structural integrity while significantly reducing the overall panel thickness.
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 configuration reduces the overall thickness of the display panel by optimizing the structure and voltage control for 2D and 3D modes, enhancing the display's thinness and lightness while maintaining effective 3D image formation.
Implementation Method 1
a liquid crystal layer located between the first substrate and the second substrate
Implementation Method 2
a polarization layer located on the encapsulation layer; a polarizer disposed on a side of the second substrate away from the first substrate
Implementation Method 3
a plurality of OLED devices arranged on the first substrate
Data Source
AI summary
The present disclosure provides an organic light-emitting diode (OLED) display panel, which includes a first substrate; a plurality of OLED devices are arranged on the first substrate; an encapsulation layer is arranged on the OLED devices; a polarization layer is located on the encapsulation layer; a plurality of first strip electrodes are located on the polarizing layer; a plurality of second strip electrodes are located below the second substrate, the second strip electrodes correspond to positions of the first strip electrodes; and a polarizer is disposed on the second substrate.