Display Device Data Driver Integration Layout
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Solution Overview
Problem
The existing display devices have a limited display area due to the arrangement of data drivers in non-display areas, which reduces the integration density of semiconductor chips and limits the expansion of the display area.
Innovation Solution
The display device incorporates data drivers within the display area, with a first latch adjacent to the non-display area, a shift register spaced apart from the first latch, and a second latch spaced apart from the shift register, allowing for an expanded display area without the need for a separate data driver area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If data drivers are arranged in the non-display area, then the display area is reduced, but the data drivers are isolated from the pixel array
Solution Approach 1:
The patent merges the data driver components (latches, shift registers, digital-to-analog converters) with the pixel array by positioning them within the display area. Specifically, the first latch is disposed adjacent to the non-display area, the shift register is spaced apart from the first latch, and the second latch is spaced apart from the shift register, creating an integrated structure that eliminates the need for a separate non-display area for driver components.
Solution Approach 2:
The patent utilizes the vertical dimension by stacking driver components and pixels in different layers. The data driver components are disposed in different vertical positions relative to the pixel array, allowing horizontal overlap and maximizing the use of available space while maintaining electrical connectivity through vertical signal paths.
2Area of stationary object
If data drivers are integrated into the display area, then the display area is expanded, but electromagnetic coupling between data lines and pixel signals may increase
Solution Approach 1:
The patent extracts the first data lines carrying digital signals and positions them exclusively in the non-display area, separating them from the pixel signals in the display area. This spatial separation reduces electromagnetic coupling between the high-speed digital data lines and the sensitive pixel signaling lines, while still allowing the data drivers to be integrated into the display area.
Solution Approach 2:
The patent introduces shielding structures and grounding elements as intermediaries between the data driver components and the pixel array. These intermediary structures act as electromagnetic barriers that reduce coupling between adjacent signal lines while allowing the components to remain in close proximity for compact integration.
Data Source
AI summary
A display device includes: a substrate including a display area and a non-display area; a plurality of data drivers disposed in the display area on the substrate and each including a first latch disposed adjacent to one side of the display area facing the non-display area, a shift register spaced apart from the first latch in a first direction, and a second latch spaced apart from the shift register in the first direction; a plurality of pixels disposed between elements of the data drivers adjacent to each other, where the elements include the first latch, the shift register, and the second latch; and a plurality of first data lines disposed in the non-display area on the substrate, adjacent to the first latch, connected to the data drivers, and to which a data signal in a digital form is applied.