Array Substrate Pixel Data Storage Circuit Reducing Drive Area
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Solution Overview
Problem
Conventional Liquid Crystal Displays (LCDs) with Graphic Random Access Memory (GRAM) architecture increase the area of the data drive circuit, hindering the light-weighting and thinning of display devices, which is adverse to reducing power consumption.
Innovation Solution
An array substrate with a pixel data storage circuit and read/write control circuit formed within the display region, and read/write data and control lines extending into a non-display region, eliminating the need for GRAM in the data drive circuit, thereby reducing the size of the data drive circuit and enhancing light-weighting and thinning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If GRAM is formed on the data drive circuit in the form of a printed circuit, then data storage capability is improved, but the area of the data drive circuit is increased
Solution Approach 1:
The patent extracts the GRAM data storage function from the data drive circuit and relocates it to the display region. By forming the pixel data storage circuit within the display region and using read/write control circuits to manage data storage and retrieval, the invention removes the need for a separate GRAM structure on the data drive circuit, thereby reducing the data drive circuit area while maintaining data storage capability.
Solution Approach 2:
The patent utilizes the display region as an additional spatial dimension for data storage. Instead of expanding the data drive circuit area in the traditional plane, the invention repurposes the display region (which would otherwise be used for visual output) to accommodate pixel data storage circuits, effectively using a different spatial dimension to resolve the area conflict.
2Reliability
If data drive circuit area is increased to accommodate GRAM, then data storage and retrieval is improved, but device weight and thickness are increased
Solution Approach 1:
The invention extracts the data storage function from the data drive circuit and relocates it to the display region, thereby reducing the overall circuit area and associated weight. By forming pixel data storage circuits within the display region and using read/write control circuits, the patent eliminates the need for extensive external GRAM structures, reducing device weight while maintaining data storage and retrieval reliability.
3Quantity of substance
If data drive circuit area is increased to accommodate GRAM, then data storage capability is improved, but device thickness is increased
Solution Approach 1:
The patent extracts the GRAM function from the data drive circuit and integrates it into the display region, reducing the need for thick external memory structures. By forming pixel data storage circuits within the display region and using read/write control circuits for data management, the invention reduces device thickness while maintaining data storage capability.
Solution Approach 2:
The invention merges the data storage function with the display region, combining two previously separate functions (display and data storage) into a single integrated structure. This merging eliminates the need for separate thick GRAM structures, thereby reducing device thickness while maintaining data storage capability.
Data Source
AI summary
An array substrate, a method for fabricating the same, a display device and a drive method thereof are disclosed. In the array substrate, a pixel data storage circuit and a R/W control circuits for controlling the pixel data storage circuits are formed within a display region of the array substrate and read/write is realized by a R/W data line and a R/W control line extending into a non-display region of the array substrate. It can thereby avoid arranging GRAM in the data drive circuit, so as to reduce the size of the data drive circuit, which is beneficial to the light-weighting and thinning of the display device.