Display Panel Driving Device Vertical Signal Interpolation
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Solution Overview
Problem
Conventional liquid crystal display devices with color filters arranged in a 2-by-2 sub-pixel matrix pattern face difficulties in responding to scale changes, particularly in the longitudinal direction, due to one-to-one correspondence between incoming signals and display outputs, limiting their ability to display high-definition images with resolutions higher than determined by the incoming signals.
Innovation Solution
A driving device for a display panel that interpolates incoming color signal components of red, green, and blue sub-pixels in both vertical and horizontal scanning directions, converts these signals into luminance signals, and reallocates luminance signals to improve resolution without altering the current arrangement of color filters, enabling higher resolution displays through software-based signal processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If color filters are arranged in a 2-by-2 sub-pixel matrix pattern, then luminance is increased, but the ability to respond to scale changes and display high-definition images is limited
Solution Approach 1:
The invention divides each pixel into multiple sub-pixels (red, green, blue, and white sub-pixels arranged in a 2-by-2 matrix pattern). This segmentation allows independent control of each sub-pixel, enabling both luminance enhancement through white sub-pixels and flexible scaling through selective use of color sub-pixels for interpolation.
Solution Approach 2:
The invention introduces a fourth color dimension (white sub-pixel) in addition to the traditional RGB three-color system. This fourth dimension provides extra luminance information that can be allocated flexibly during scaling operations, allowing high-definition display capability without changing the physical pixel arrangement.
2Device complexity
If one-to-one correspondence is maintained between incoming signals and display outputs, then signal processing is simple, but resolution cannot exceed the incoming signal resolution
Solution Approach 1:
The invention pre-arranges multiple sub-pixels (including white sub-pixels) within each pixel location before the scaling operation. This preliminary configuration of sub-pixels provides the structural foundation that enables subsequent high-resolution scaling without requiring complex real-time processing, as the hardware is already prepared to handle interpolated signals.
Solution Approach 2:
The invention changes the signal parameters by introducing white sub-pixel signals in addition to RGB signals. This parameter expansion allows the display system to represent more luminance information, which can then be utilized during scaling operations to achieve higher effective resolution without proportionally increasing processing complexity.
3Illumination intensity
If white sub-pixels are added to increase luminance, then luminance increases by approximately 50%, but the system becomes less flexible in handling different display requirements
Solution Approach 1:
The white sub-pixels serve multiple functions: they provide luminance enhancement for bright displays, supplies additional signal data for scaling operations, and can be selectively activated based on display requirements. This multi-functionality allows the same hardware configuration to adapt to both luminance-critical applications and high-resolution scaling scenarios.
Solution Approach 2:
The invention enables dynamic allocation of white sub-pixel signals during processing. The white sub-pixel data can be selectively used for luminance enhancement in some regions while being used for interpolation in other regions, allowing the system to dynamically adapt to different display requirements based on content and viewing conditions.
Data Source
AI summary
A display panel is the one in which a pixel composed of sub-pixels of red (R), green (G), blue (B), and at least one other color has two sub-pixels at least in a vertical scanning direction, and color filters are provided respectively corresponding to the sub-pixels. There are provided: an incoming signal interpolating section which interpolate each of pixels based on incoming color signal components of red (R), green (G), and blue (B) at least in a vertical scanning direction to generate interpolated RGB signals; a luminance signal converting section which converts color signals of interpolated sub-pixels, which are obtained from the incoming signal interpolating section, into luminance signals; an another color luminance component adding section which adds a luminance signal component of at least one other color on a basis of luminance signal components of colors of red (R), green (G), and blue (B), which components are outputted from the luminance signal converting section; and a luminance reallocating section which reallocates luminance signals of peripheral interpolated sub-pixels, for a color of each of the color filters corresponding to the sub-pixels, in accordance with output from the another color luminance component adding section.