Segmented Polarization Layer for Transparent Display Reflection Control
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Solution Overview
Problem
Transparent display panels face challenges in maintaining transparency due to reflection of external environment light by light emitting and driving devices, which affects display effect, and the use of polarizers to mitigate this reduces light transmissivity.
Innovation Solution
A display panel with a polarization layer that absorbs external environment light in the display region while transmitting it in the transparent region, utilizing a guest-host liquid crystal layer and phase difference film modules to control light absorptivity and transmissivity, respectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a polarizer is added to absorb external environment light and prevent reflection, then the display effect is improved, but the light transmissivity of the transparent region is reduced
Solution Approach 1:
The display panel is divided into two distinct regions: a display region and a transparent region. The polarization layer is selectively applied only to the display region, while the transparent region remains free of the polarization layer. This segmentation allows the polarizer to absorb external environment light in the display region without affecting light transmissivity in the transparent region, thus resolving the contradiction between reducing reflection and maintaining transparency.
Solution Approach 2:
Different optical properties are applied to different regions of the display panel. The display region is equipped with a polarization layer to absorb external light and reduce reflection, while the transparent region maintains its original transparent properties without the polarization layer. This local differentiation enables each region to optimize its specific function: display quality in the display region and transparency in the transparent region.
2Object-affected harmful factors
If a polarizer is added to prevent light reflection by light emitting and driving devices, then the display effect is improved, but the device complexity increases
Solution Approach 1:
The polarization layer is segmented and applied only to the display region where light emitting and driving devices are located, rather than covering the entire display panel. This selective application reduces the amount of additional material and processing required, thereby limiting the increase in device complexity while still achieving the goal of reducing light reflection from these specific devices.
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 reduces light reflectivity in the display region without affecting the transmissivity of the transparent region, thereby enhancing the display effect and maintaining transparency.
Implementation Method 1
a portion of the polarization layer in the display region is configured to absorb external environment light, and another portion of the polarization layer in the transparent region is configured to transmit the external environment light
Implementation Method 2
the polarization layer includes a first alignment layer and a guest-host liquid crystal layer
Implementation Method 3
each phase difference film module includes an alignment layer and a phase difference film
Implementation Method 4
the first phase difference film increases light absorptivity of the guest-host liquid crystal layer, and the second phase difference film reduces a color shift of the display panel
Data Source
AI summary
The present disclosure provides a display panel, a method for manufacturing the same and a display device. The display panel includes a substrate and a plurality of pixels provided on the substrate, each of the pixels includes a display region and a transparent region, a light emitting device is provided in the display region, the display panel further includes a polarization layer provided in the display region and the transparent region, and at a light exiting side of the light emitting device departing from the substrate, a portion of the polarization layer located in the display region is configured to absorb external environment light, and another portion of the polarization layer located in the transparent region is configured to transmit the external environment light.