Display Timing Controller Dual Compression Signal Selection
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Solution Overview
Problem
As display panel sizes increase, the number of integrated circuits required for driving them also grows, leading to higher communication speeds and increased complexity, which existing technologies struggle to manage efficiently.
Innovation Solution
A display device and driving method that utilize a timing controller to compress image signals using two compression schemes, selecting the one with a narrower bit width, and transferring this compressed data to data driver integrated circuits, thereby reducing the bit width of the data signal and minimizing the number of data driver integrated circuits needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If display panel size is increased, then display area is improved, but the number of integrated circuits required increases
Solution Approach 1:
The patent combines multiple data driver integrated circuits into a single data driver integrated circuit by implementing a compression scheme that reduces the data signal bit width. This merging approach allows one data driver IC to control multiple data lines that would traditionally require separate driver circuits, thereby reducing the overall number of integrated circuits needed for large display panels.
Solution Approach 2:
The patent changes the parameter of data signal bit width through compression schemes (first and second compression schemes) to reduce the amount of data that needs to be transmitted. By compressing the image signal before transmission and decompressing it at the display panel, the system can drive more pixels with fewer integrated circuits while maintaining image quality.
2Speed
If the number of integrated circuits is increased, then communication speed is improved, but device complexity increases
Solution Approach 1:
By merging the functions of multiple data driver integrated circuits into a single data driver IC with compression capability, the patent reduces device complexity while maintaining communication efficiency. The compression scheme allows the single driver to handle the data load that would previously require multiple drivers, simplifying the overall system architecture.
Solution Approach 2:
The patent introduces a compression scheme as an intermediary process between the timing controller and the data driver integrated circuit. This compression intermediary reduces the data bit width, allowing efficient communication with fewer integrated circuits while maintaining the required communication speed for driving large display panels.
3Device complexity
If data signal bit width is reduced, then the number of integrated circuits is minimized, but image signal quality may be compromised
Solution Approach 1:
The patent applies compression to the image signal before it is transmitted to the data driver integrated circuit. This preliminary compression action reduces the bit width requirement while preserving the essential image information. The compression is performed in advance by the timing controller, allowing the reduced-bit-width signal to be efficiently transmitted and then fully reconstructed at the display panel.
Solution Approach 2:
The patent implements a decompression process at the display panel that reconstructs the original image signal from the compressed data. This feedback mechanism ensures that the reduced bit width during transmission does not compromise the final image quality, as the decompression restores the full image data for display.
Data Source
AI summary
A display device includes: a display panel comprising a plurality of pixels coupled to a plurality of gate lines and a plurality of data lines, respectively; a gate driver configured to drive the plurality of gate lines; a data driver configured to drive the plurality of data lines; and a timing controller configured to control the gate driver and the data driver and to provide the data driver with a data signal generated by compressing an image signal received from an external device, wherein the timing controller is configured to compress the image signal according to a first compression scheme and a second compression scheme to generate a first compression signal and a second compression signal, respectively, and wherein the timing controller is configured to select whichever one, from among the first compression signal and the second compression signal, that has a relatively narrower bit width as the data signal.