Foldable Dual-Panel Display Structure for Brightness and Low Power
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Solution Overview
Problem
Portable electronic devices require compact size, low power consumption, high visibility in varying light conditions, and the ability to display high-quality video, while also being foldable, which existing display devices struggle to achieve effectively.
Innovation Solution
A display device comprising a first and second display panel, where the second panel is larger and flexible, bonded to the first panel with an adhesive layer, incorporating reflective liquid crystal elements and light-emitting elements to optimize visibility and power efficiency, and allowing for folding by overlapping flexible regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a transmissive liquid crystal display device with a backlight is used, then the display has high brightness and good visibility, but the power consumption increases
Solution Approach 1:
The patent combines transmissive and reflective liquid crystal display panels into a single device. The transmissive panel provides high brightness when backlight is needed, while the reflective panel utilizes ambient light for low-power operation. Both panels share common circuitry and can be controlled to work independently or together, merging the advantages of both display types into one unified device that adapts to different lighting conditions and power requirements.
2Area of stationary object
If the display portion area is increased for higher visibility, then the display quality improves, but the device size and portability deteriorate
Solution Approach 1:
The display device is segmented into two separate liquid crystal panels - a transmissive panel and a reflective panel - each optimized for different functions. This segmentation allows the device to achieve a large effective display area when both panels are used together while maintaining a compact form factor when folded, as each panel can be smaller individually but provides complementary display capabilities that collectively cover a larger area.
3Manufacturing precision
If a rigid display structure is used, then the manufacturing precision is high, but the flexibility and foldability are poor
Solution Approach 1:
The patent employs flexible substrates and thin-film transistor technology to create liquid crystal panels that can be bent and folded. The use of flexible基板 materials and thin-film structures maintains manufacturing precision while enabling the display device to be folded into compact configurations, achieving both high manufacturing quality and mechanical flexibility for portable applications.
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 provides improved portability, reduced power consumption, high-quality video display in any environment, and a foldable design, enhancing the functionality of portable electronic devices.
Implementation Method 1
The liquid crystal element has a function of reflecting light toward the second substrate side
Implementation Method 2
The light-emitting element has a function of emitting light toward the second resin layer side
Implementation Method 3
The first substrate and part of the second resin layer are bonded to each other with the adhesive layer
Data Source
AI summary
A semiconductor device including a large display portion with improved portability is provided. The display device includes a first display panel, a second display panel, and an adhesive layer. The area of the second display panel is larger than the area of the first display panel. The first display panel includes a first substrate, a second substrate, and a reflective liquid crystal element and a first transistor each positioned between the first substrate and the second substrate. The second display panel includes a first resin layer having flexibility, a second resin layer having flexibility, and a light-emitting element and a second transistor each positioned between the first resin layer and the second resin layer. The liquid crystal element has a function of reflecting light toward the second substrate side. The light-emitting element has a function of emitting light toward the second resin layer side. The first substrate and part of the second resin layer are bonded to each other with the adhesive layer.