Dual-Sided Display Panel With Light Transmittance Adjusting Layer
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Solution Overview
Problem
Conventional display devices typically support only single-sided display, limiting their functionality in applications where simultaneous viewing from both sides is required, such as digital signage or public exhibition settings.
Innovation Solution
A display panel design featuring a light transmittance adjusting layer with two pixel layers on opposite surfaces, each comprising light-emitting units arranged in an array, allowing for independent or joint display of images on both sides by controlling the light transmittance and image data distribution between the layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If two display panels are disposed back to back to achieve double-sided display, then both sides can view pictures simultaneously, but the device complexity increases and the display function remains single
Solution Approach 1:
The patent merges two display panels into a single integrated structure by bonding them back-to-back with a bonding layer, forming one unified display device that shares common support structures and control systems, thereby reducing overall device complexity while maintaining double-sided display capability
Solution Approach 2:
The integrated display panel structure enables multiple display modes (independent dual-sided display, synchronized display, and partial display) within a single device, enhancing adaptability and versatility without requiring separate display systems for different functions
2Adaptability or versatility
If two display panels are disposed back to back, then independent display on both sides is achieved, but the manufacturing process becomes more complex
Solution Approach 1:
The patent applies preliminary action by pre-forming pixel layers, light-emitting units, and conductive layers on both panels before bonding, allowing independent manufacturing preparation and quality control of each panel while ensuring precise alignment and integration during the bonding process
3Adaptability or versatility
If a light transmittance adjusting layer is introduced to enable dual-sided display, then display functionality is enhanced, but the device structure becomes more complex
Solution Approach 1:
The light transmittance adjusting layer serves multiple functions: it enables light transmission for dual-sided viewing, acts as a bonding interface between panels, and provides structural support, thereby enhancing display mode flexibility without proportionally increasing device complexity
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
Enables dual-sided display functionality, enhancing the display panel's functionality by allowing images to be viewed from either side when the light transmittance adjusting layer is in a light-transmitting state or displayed independently when in a non-light-transmitting state, enriching the display capabilities.
Implementation Method 1
the liquid crystal layer, a liquid crystal control layer and two polarizers, the liquid crystal layer is sandwiched between the two base substrates, the liquid crystal control layer is disposed on at least one of the base substrates, the liquid crystal control layer is configured to control liquid crystal molecules in the liquid crystal layer to deflect
Implementation Method 2
each light-emitting unit comprises at least one OILED light-emitting unit. Each OLED light-emitting unit comprises a first electrode and a second electrode, and an organic light-emitting structure sandwiched between the first electrode and the second electrode
Data Source
AI summary
A display panel, a manufacturing method and driving method thereof are provided. The display panel includes a light transmittance adjusting layer and two pixel layers being respectively located on opposite surfaces of light transmittance adjusting layer. Each pixel layer includes multiple light-emitting units arranged in an array. Orthogonal projections of two pixel layers on the light transmittance adjusting layer do not overlap. When light transmittance of light transmittance adjusting layer is higher, light emitted from the light-emitting units on both surfaces of light transmittance adjusting layer is emergent from opposite sides through light transmittance adjusting layer. Two pixel layers display the same picture jointly. When light transmittance of light transmittance adjusting layer is lower, light emitted from light-emitting units on both surfaces of light transmittance adjusting layer cannot be transmitted through light transmittance adjusting layer to reach opposite sides. Two pixel layers display images independently.