Double-Sided Display Panel With Integrated OLED Backlighting
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Solution Overview
Problem
Existing double-sided display panels face issues with low light output efficiency and high power consumption, particularly when using white organic light emitting diodes (WOLED) as backlight sources on both sides, which affects synchronization speed and increases costs in applications like bank counters and one-to-one teaching scenarios.
Innovation Solution
A display panel design featuring a first display panel with specific anode and cathode thickness configurations, light shielding and reflection portions, and a lens layer to enhance light utilization, combined with a second display panel for improved backlighting using a flexible base substrate and optical adhesive, allowing for efficient light output and reduced power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If white organic light emitting diodes (WOLED) are used as backlight sources on both sides of the display panel, then double-sided display function is achieved, but light output efficiency decreases and power consumption increases
Solution Approach 1:
The first display panel serves dual functions: it acts as an independent display on the front side while simultaneously functioning as a backlight source for the second display panel on the rear side. This multi-functionality eliminates the need for a separate backlight unit, improving light output efficiency while maintaining double-sided display capability
Solution Approach 2:
The invention merges the display function and backlight function into a single integrated structure. The first display panel combines both roles by allowing its light emitting devices to provide illumination for the second display panel, thereby reducing overall system complexity and energy loss
2Adaptability or versatility
If white organic light emitting diodes (WOLED) are used as backlight sources on both sides of the display panel, then double-sided display function is achieved, but power consumption increases
Solution Approach 1:
The first display panel serves dual functions: it acts as an independent display on the front side while simultaneously functioning as a backlight source for the second display panel on the rear side. This multi-functionality eliminates the need for a separate backlight unit, improving light output efficiency while maintaining double-sided display capability
Solution Approach 2:
The invention merges the display function and backlight function into a single integrated structure. The first display panel combines both roles by allowing its light emitting devices to provide illumination for the second display panel, thereby reducing overall system complexity and energy loss
3Illumination intensity
If the anode thickness is increased to improve light emission for the first display panel, then display brightness is improved, but light transmission to the second display panel decreases
Solution Approach 1:
The anode is designed with non-uniform thickness: thicker in regions corresponding to the first display panel to enhance light emission for display purposes, and thinner in regions corresponding to the second display panel to maximize light transmission for backlighting. This spatial variation in thickness optimizes both display brightness and backlight efficiency simultaneously
4Illumination intensity
If the cathode thickness is increased to improve light emission for the first display panel, then display brightness is improved, but light transmission to the second display panel decreases
Solution Approach 1:
The cathode is designed with non-uniform thickness: thicker in regions corresponding to the first display panel to enhance light emission for display purposes, and thinner in regions corresponding to the second display panel to maximize light transmission for backlighting. This spatial variation in thickness optimizes both display brightness and backlight efficiency simultaneously
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 design improves luminous output of the second display panel while reducing overall power consumption, enabling faster information synchronization and cost savings in interactive applications.
Implementation Method 1
the first type light emitting device includes a first anode, a first organic light emitting layer, and a first cathode provided sequentially, and the second type light emitting device includes a second anode, a second organic light emitting layer, and a second cathode provided sequentially
Implementation Method 2
the lens layer includes multiple first lenses, and a first lens is configured to gather light emitted from the second type light emitting device toward a direction to a center of the first lens
Implementation Method 3
the second display panel includes an array substrate and a counter-side substrate provided sequentially, and a liquid crystal layer provided between the array substrate and the counter-side substrate
Data Source
AI summary
A display panel, a manufacturing method therefor and a display apparatus. The display panel comprises a base, and a first display panel and a second display panel which are arranged on opposite sides of the base. In a direction away from the base, the first display panel comprises a plurality of light-emitting devices and a first color film layer which are sequentially arranged. The second display panel comprises an array substrate and an opposite-side substrate which are sequentially arranged, and a liquid crystal layer arranged between the array substrate and the opposite-side substrate. The first display panel is configured to display, and at least part of the plurality of light-emitting devices are configured to provide backlight for the second display panel, enabling the second display panel to display.