Organic Electroluminescence Display Switching Pixel Regions
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Solution Overview
Problem
In mobile terminal devices like smartphones, the demand for high-density installation of circuit components and reduced power consumption is hindered by the increased load and power consumption due to the need for additional signal lines for driving LEDs and organic electroluminescence display devices.
Innovation Solution
An organic electroluminescence display device with a switch unit comprising transistors that switches between display areas, sharing data lines and optimizing signal transmission by driving second pixels during vertical retrace time periods when first pixels are not active, thereby reducing the need for separate signal lines and power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate signal lines are used for driving LEDs and organic electroluminescence display devices, then the display functionality is achieved, but the device complexity and power consumption increase
Solution Approach 1:
The patent applies universality by enabling the organic electroluminescence display device to perform multiple functions: it serves as both the main display and the icon section display, replacing the need for separate LED control. The display device can show different types of content (main images and notification icons) in different regions, achieving multi-functionality with a single device structure.
Solution Approach 2:
The patent merges the previously separate LED icon section functionality into the organic electroluminescence display device itself. By integrating the icon section display capability within the same display device structure, it combines multiple display functions into one unified system, reducing the number of separate components and signal lines required.
2Adaptability or versatility
If additional signal lines are added for driving icon section, then the display versatility is improved, but the power consumption increases
Solution Approach 1:
The organic electroluminescence display device is designed to handle multiple display tasks (main display and icon notifications) using the same pixel structure and driving circuitry, eliminating the need for separate LED driving circuits and reducing overall power consumption.
Solution Approach 2:
The display device utilizes periodic scanning of pixel rows, where during the vertical retrace period when main display pixels are not being driven, the icon section pixels can be driven. This time-division multiplexing approach allows icon section functionality without requiring continuous additional power for separate signal lines.
3Adaptability or versatility
If the icon section is driven during frame time period, then the notification functionality is achieved, but the main display quality deteriorates due to increased signal line load
Solution Approach 1:
The patent implements time-division multiplexing where the display is divided into frame periods and vertical retrace periods. During frame periods, main display pixels are driven with high priority to ensure display quality. During vertical retrace periods, icon section pixels are driven. This periodic switching ensures that notification functionality is achieved without interfering with main display quality.
Solution Approach 2:
The switching unit is pre-configured to automatically switch between driving main display pixels and icon section pixels based on the timing signal. This preliminary arrangement of switching logic ensures that icon section driving occurs only during appropriate time windows (vertical retrace) when main display quality is not compromised.
4Adaptability or versatility
If more pixels are integrated into the display device, then the versatility is improved, but the device complexity increases
Solution Approach 1:
The patent applies local quality by differentiating the functional characteristics of different pixel regions. Main display pixels and icon section pixels have different driving requirements and are controlled differently through the switching unit. This localized functional differentiation allows multiple display areas with distinct purposes while managing overall device complexity through region-specific control strategies.
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 high-density installation of circuit components while minimizing power consumption by sharing data lines and optimizing signal transmission, reducing the load on signal lines and power usage.
Implementation Method 1
organic electroluminescence display devices which use organic electroluminescence materials in light emitting elements (organic electroluminescence devices)
Data Source
AI summary
An organic electroluminescence display device is provided in which circuit components can be installed at a high density and which can reduce power consumption. The organic electroluminescence display device of the present invention comprises a display part including a first display area including a plurality of first pixels and a second display area including a plurality of second pixels, and a switch unit formed from a plurality of transistors and switching between display in the first display area and display in the second display area. The switch unit does not drive the plurality of second pixels during a frame time period for driving the plurality of first pixels in the display part and drives the plurality of second pixels during a vertical retrace time period in which the plurality of first pixels are not driven in the display part.