Gate Driver Integration on Array Substrate for Narrow Frame Design
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Solution Overview
Problem
The traditional gate driver design in display technology occupies a significant width of the frame, restricting the ability to narrow the display device's frame, as it is typically located on a circuit board in a non-displaying area and requires a frame for obscuration.
Innovation Solution
The array substrate is designed with shifting register units divided into a row shared module outside the display area and output pull-up and pull-down modules within the display area, with pull-up and pull-down sub-modules distributed across multiple columns and rows, reducing the area occupied by the gate driver on the circuit board.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the gate driver is located on a circuit board in a non-displaying area, then the gate driver can be easily implemented and maintained, but the frame width increases and cannot be narrowed
Solution Approach 1:
The patent extracts the gate driver function from the traditional circuit board location and integrates it directly into the array substrate. Specifically, the gate driver is divided into a row shared module located outside the display area and output pull-up/pull-down modules located within the display area, eliminating the need for a separate circuit board and obscuring frame.
Solution Approach 2:
The patent transitions the gate driver from a two-dimensional circuit board layout to a three-dimensional integration on the array substrate itself. By placing the row shared module outside the display area and the output modules within the display area, the gate driver utilizes the vertical dimension and substrate area more efficiently, reducing the horizontal frame width.
2Length of stationary object
If the gate driver is integrated on the array substrate, then the frame width can be narrowed, but the area occupied by the gate driver on the substrate increases
Solution Approach 1:
The gate driver is segmented into two distinct modules: the row shared module positioned outside the display area and the output pull-up/pull-down modules positioned within the display area. This segmentation allows the majority of the gate driver circuitry to be located outside the active display region, minimizing the area occupied on the substrate while achieving frame narrowing.
Solution Approach 2:
The row shared module serves multiple rows of pixel units simultaneously, providing gate signals to multiple rows through shared control lines. This multi-functionality reduces the total area required for the gate driver on the substrate, as one module can control multiple rows rather than requiring separate dedicated modules for each row.
Data Source
AI summary
Embodiments of the invention provide an array substrate and a display device, the array substrate comprises a plurality of pixel units arranged in an array and a plurality of shifting register units, each shifting register unit corresponding to a row of pixel units. A shifting register unit corresponding to pixel units of any row comprises: a row shared module outside of a display area of the array substrate, an input of which is connected with clock signal lines and a gate signal line of pixel units of a previous row, and an output of which is connected with a pull-up control signal line of pixel units of the row thereof and a pull-down control signal line of pixel units of the row thereof; an output pull-up module within the display area of the array substrate, which is connected to the pull-up control signal line of pixel units of the row thereof and a gate signal line of pixel units of the row thereof; an output pull-down module within the display area of the array substrate, which is connected to the pull-down control signal line of pixel units of the row thereof and the gate signal line of pixel units of the row thereof. Embodiments of the invention can overcome the problem of the gate driver restricting the narrowing for the frame.