Oblique Flexible Boards Reduce Printed Board Width
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Solution Overview
Problem
In liquid crystal display modules mounted in devices like notebook or laptop computers, there is a need to secure space for additional components along the width of the printed board, particularly to accommodate hinges and keyboard arrangements, which is challenging due to the arrangement of gate and source drivers.
Innovation Solution
The display device incorporates a TFT substrate with source and gate drivers aligned in specific directions, connected via flexible boards that extend obliquely to a printed board, allowing for a reduced width of the printed board while maintaining connectivity, thus securing space for other components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If gate drivers and source drivers are arranged in the vicinity of the pixel region with flexible boards extending straight, then electrical connection between TFT substrate and printed board is achieved, but the width of the printed board increases, leaving no space for additional components
Solution Approach 1:
The flexible boards are extended obliquely at specific angles (e.g., 30-60 degrees) relative to the second direction instead of extending straight perpendicular to the TFT substrate. This angular extension in a different dimensional orientation reduces the projected width of the printed board while maintaining electrical connection functionality, thereby creating space for additional components in the width direction.
Solution Approach 2:
The flexible boards are arranged asymmetrically with different extension angles relative to the second direction. By using different angles for different flexible boards, the overall width of the printed board is optimized, and space is created for additional components while maintaining all necessary electrical connections.
2Ease of operation
If flexible boards are arranged obliquely to reduce printed board width, then space for additional components is secured, but manufacturing precision and alignment become more difficult
Solution Approach 1:
The flexible boards are designed with predetermined extension angles and positions that are calculated in advance to achieve both width reduction and proper alignment. The connection portions on the TFT substrate and printed board are designed with matching geometries that guide the flexible boards into correct alignment during assembly, making the oblique arrangement manufacturable with standard precision.
3Reliability
If multiple flexible boards are arranged to connect multiple gate drivers and source drivers, then electrical connection is achieved, but the printed board width increases, reducing space for other components
Solution Approach 1:
Multiple flexible boards are arranged with different oblique angles in the width direction rather than being parallel to each other. This angular distribution in a different dimensional orientation allows all necessary electrical connections to be maintained while the projected width of the printed board is minimized, creating space for additional components.
Data Source
AI summary
A display device includes: a TFT substrate including: a display region including a plurality of pixels; a plurality of source drivers arranged and aligned in a first direction along the display region; and a plurality of gate drivers arranged and aligned in a second direction along the display region; a printed board including a timing controller for controlling the plurality of source drivers and the plurality of gate drivers; and a plurality of flexible boards for connecting the TFT substrate and the printed board to each other, in which the plurality of flexible boards include a plurality of first flexible boards that extend obliquely to one side with respect to the second direction, and a plurality of second flexible boards that extend obliquely to another side with respect to the second direction.