Scan Chain Register Power Control for Flexible Display Regions
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Solution Overview
Problem
Flexible display devices with multiple display regions face challenges in maintaining consistent luminance and color tones when the regions are oriented differently, requiring frequent parameter adjustments and consuming power even when not in use.
Innovation Solution
A semiconductor device with a controller, register, and frame memory that stores image data and parameters, using metal oxide transistors for low power consumption and retention, allowing for independent control of display regions and power management to maintain display quality and reduce power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If power supply is stopped to reduce power consumption, then power consumption is reduced, but data retention is lost
Solution Approach 1:
The register is divided into multiple independent scan chain registers (first scan chain register, second scan chain register) that can be selectively powered. This segmentation allows the controller to stop power supply to specific register segments that do not need to retain data, while maintaining power supply to segments that need data retention, thus reducing overall power consumption while preserving necessary data.
Solution Approach 2:
Different retention characteristics are applied to different register segments based on their functional requirements. The first scan chain register and second scan chain register can be configured with different retention circuit configurations, allowing critical data to be retained while non-critical data can be cleared when power is stopped, achieving localized optimization of power consumption and data retention.
2Reliability
If parameters are reset frequently to adapt to different display region orientations, then display quality is maintained, but operation complexity increases
Solution Approach 1:
The register structure enables dynamic configuration where the controller can selectively enable or disable specific scan chain registers based on the current display orientation and region requirements. This dynamic adaptability allows the system to maintain optimal display quality without requiring frequent manual parameter resets, as the system can automatically configure the appropriate register segments for the current operating condition.
3Adaptability or versatility
If multiple display regions are supported with independent parameters, then adaptability is improved, but device complexity increases
Solution Approach 1:
The scan chain register structure provides a universal framework that can support multiple display regions and different orientations through a single integrated register system. The first scan chain register and second scan chain register can be configured to handle different display regions, and the controller can selectively activate appropriate register segments based on the current display configuration, eliminating the need for separate parameter sets for each region and orientation combination.
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 consistent luminance and color tones across different orientations of display regions with reduced power consumption by using metal oxide transistors for efficient data retention and power management, ensuring high display quality even when power is temporarily stopped.
Implementation Method 1
The retention circuit in the second register has a function of storing the first data. The retention circuit in the third register has a function of storing the second data. Each of the retention circuits has a function of retain the stored data while power supply to the register is stopped.
Data Source
AI summary
An object is to provide a semiconductor device with low power consumption. The semiconductor device includes a controller, a register, and an image processing portion. The image processing portion has a function of taking image data from a frame memory and a parameter from the register and processing the image data by using the parameter. The frame memory has a function of retaining the image data while power supply is stopped. The register has a function of retaining the parameter while power supply is stopped. The controller controls power supply to the register, the frame memory, and the image processing portion. The register includes first and second scan chain registers. The first scan chain register stores a parameter related to a first display region. The second scan chain register stores a parameter related to a second display region. A parameter is changed by loading of data of the first or second scan chain register.