Display Panel Driving Method for Inverted Mounting Heat Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional liquid crystal display (LCD) driving methods, such as the from-the-top and from-lower side driving methods, face issues with heat generation and image quality due to increased conductor line resistance and electromagnetic interference, and manufacturers struggle with inventory management for both methods.
Innovation Solution
A method of driving a display panel that allows for both normal and inverted mounting modes by reading frame data in different directions and applying compensation data, which includes controlling the latch sequence and output sequence of image data and gate signals to reduce line length and improve image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conductor lines are lengthened to transfer signals from lower side to top side of display panel, then signal transfer is enabled, but resistance and electromagnetic interference increase causing image quality degradation
Solution Approach 1:
The patent inverts the conventional signal transfer direction by transferring signals from the top side to the lower side of the display panel, rather than from lower side to top side. This inversion shortens the conductor line length, reducing resistance and electromagnetic interference, thereby improving image quality while maintaining signal transfer capability
2Adaptability or versatility
If gate start signal line is lengthened in from-lower side driving method, then inverted mounting mode is supported, but load increases and image quality decreases
Solution Approach 1:
The patent inverts the gate start signal transfer direction by transferring the signal from the top side to the lower side, opposite to the conventional from-lower side method. This inversion shortens the gate start signal line length, reducing load and improving image quality while still supporting inverted mounting mode through the combination of both driving methods
3Adaptability or versatility
If conventional from-the-top driving method is used, then normal mounting mode is supported, but heat generation increases
Solution Approach 1:
The patent implements a dynamic driving method that can switch between from-the-top and from-lower side driving methods based on the mounting mode. This dynamic adaptation allows the system to use the from-lower side method (which generates less heat) when in inverted mounting mode, while maintaining support for normal mounting mode through the from-the-top method
Data Source
AI summary
A display apparatus includes a display panel, a plurality of gate lines driving circuit parts, a plurality of data lines driving circuit parts and a timing control part. The display panel includes a plurality of gate lines and a plurality of data lines. The gate lines driving circuit parts output gate signals to the gate lines. The data lines driving circuit parts output data signals to the data lines. The timing control part applies a dummy gate signal to at least one dummy gate line, controls a latch sequence of image data and an output sequence of the gate lines driving circuit parts in a reverse sequence, in response to an inverted-mounting mode selection signal for displaying an inverted mount image to the display panel. Because signal lines can be shortened, heat generated by the display apparatus may be decreased and image quality of the display apparatus may be improved.