Array Substrate With Shared Scanning Lines For Electronic Paper Displays
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Solution Overview
Problem
The existing array substrates for electronic paper displays require a large number of control chips, leading to high costs due to the need for multiple independently controlled small display modules with closely spaced control chips and flexible circuit boards.
Innovation Solution
The array substrate is designed with multiple sub-display areas where sub-pixels in the same column share data lines and sub-pixels in the same row share scanning lines, with scanning lines and control signal lines electrically connected across sub-display areas, allowing a single control chip and flexible circuit board to drive multiple sub-display areas, reducing the number of control chips and circuit boards required.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple small electronic paper display modules are used to form an oblong display screen, then the display area is increased, but the number of control chips and flexible circuit boards increases significantly, leading to high costs
Solution Approach 1:
The patent merges the control functions of multiple independent display modules into a unified control architecture. By electrically connecting scanning lines across sub-display areas and using shared data lines, multiple sub-display areas are controlled through fewer control chips and flexible circuit boards, reducing system complexity while maintaining large display area.
Solution Approach 2:
The patent implements multi-functionality by enabling control chips and flexible circuit boards to serve multiple sub-display areas simultaneously. The scanning lines are designed to extend across multiple sub-display areas, allowing a single control chip to manage multiple display regions, thereby reducing the total number of control components needed.
2Adaptability or versatility
If multiple control chips are arranged with small spacing to control multiple display modules, then the display screen can be formed, but the cost increases due to the large number of control chips required
Solution Approach 1:
The patent combines the control functions for multiple display modules into fewer control chips by establishing shared scanning line connections across sub-display areas. This merging approach allows a single control chip to control multiple sub-display areas, significantly reducing the quantity of control chips needed while maintaining comprehensive control capability.
Solution Approach 2:
The patent extends scanning lines in the column direction to span multiple sub-display areas, adding a dimensional aspect to the control architecture. This allows control signals to be distributed across multiple display areas through a unified scanning line structure, reducing the need for multiple independent control chips.
3Ease of operation
If multiple flexible circuit boards are used to provide drive signals for data signal lines, then the display function is achieved, but the cost and device complexity increase
Solution Approach 1:
The patent merges the functions of multiple flexible circuit boards into a reduced number of boards by establishing shared data line connections across sub-display areas. The data lines are designed to extend through multiple sub-display areas, allowing fewer flexible circuit boards to provide drive signals for the entire display, thereby reducing device complexity.
Data Source
AI summary
In an array substrate, an electronic paper display panel and a drive method thereof, and a display device, a display area includes multiple sub-display areas. A plurality of scanning lines in each sub-display area are electrically insulated from each other, corresponding scanning lines in different sub-display areas are electrically connected to each other and display time of each sub-display area is controlled through control signal lines. When a control chip and a flexible circuit board are employed, only a small number of control chips and/or flexible circuit boards, or even only one control chip and/or one flexible circuit board, may drive multiple sub-display areas to display pictures.