Dual Resolution LCD Circuit for Power Saving
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Solution Overview
Problem
Current LCD technologies lack a cost-effective and efficient circuit configuration for supporting dual resolution modes, which are essential for power-saving and low-resolution requirements.
Innovation Solution
A dual resolution circuit configuration that includes a shift register stage, a dual resolution switch, and a logic circuit stage, utilizing clock signals, normal/reverse scan switches, and resolution mode control signals to generate output scan signals for both normal and half resolution modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a circuit configuration supports dual resolution modes, then power saving and low resolution requirements are met, but circuit complexity increases
Solution Approach 1:
The scan signal generation circuit is designed to perform multiple functions by supporting both normal resolution mode (640×480) and half resolution mode (320×240) operations. The same circuit generates scan signals for different resolution requirements through configurable operation modes, eliminating the need for separate dedicated circuits for each resolution mode.
Solution Approach 2:
The circuit incorporates dynamic switching mechanisms that allow it to adapt its operation based on the required resolution mode. Control signals dynamically adjust the circuit's behavior to generate appropriate scan signals for either full resolution or half resolution displays, enabling flexible adaptation without fixed hardware constraints.
2Use of energy by moving object
If dual resolution modes are implemented, then power consumption is reduced in low resolution mode, but manufacturing cost increases
Solution Approach 1:
A single scan signal generation circuit is designed to universally support both normal and half resolution modes, eliminating the need for separate circuits for each mode. This multi-functional approach reduces the total component count and manufacturing complexity while enabling power-saving operations in half resolution mode through the same hardware infrastructure.
3Use of energy by moving object
If dual resolution modes are implemented, then power consumption is reduced in low resolution mode, but circuit area increases
Solution Approach 1:
The scan signal generation circuit is designed as a compact multi-functional unit that supports both resolution modes within a minimized area. By sharing common components and using configurable logic rather than dedicated hardware for each mode, the circuit achieves dual resolution capability without proportionally increasing the occupied area.
Data Source
AI summary
A dual resolution circuit for supporting normal resolution display mode and half resolution display mode is disclosed. In the dual resolution circuit, cascaded shift registers are controlled by a group of clock signals to generate intermediate scan signals in response to a start pulse. A normal/reverse scan switch, controlling a normal scan mode and a reverse scan mode, feeds back the intermediate scan signal from one shift register to another shift register. A dual resolution switch switches signal paths of the intermediate scan signals to logic gates. The logic gates perform logic operation on an enablement signal and the intermediate scan signals to generate final scan signals used in dual resolution display modes.