Uniform Resolution Display Panel with Variable Pixel Data Mapping
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Solution Overview
Problem
In head mount displays (HMDs) using liquid crystal panels, achieving high resolution while minimizing data transfer and power consumption is challenging, and existing solutions with varying display panel resolutions lead to visual boundaries and manufacturing complexities.
Innovation Solution
An image display device with a display panel of uniform resolution, employing an image data conversion unit to convert pixel data into a reduced form, and a drive circuit to manage pixel data distribution based on distance from a reference position, ensuring calculations are performed only where necessary to prevent visual boundaries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the resolution of the liquid crystal panel is increased to eliminate the screen door effect, then the image quality is improved, but the amount of data to be transferred and power consumption increase
Solution Approach 1:
The liquid crystal panel is divided into a center region and a surrounding region, with different pixel data writing strategies applied to each region. The center region uses one-to-one pixel data writing to maintain high resolution, while the surrounding region uses one-to-many pixel data writing to reduce data transfer and power consumption.
Solution Approach 2:
Different regions of the display panel are assigned different quality levels. The center region, where the user's line of sight is focused, maintains high resolution with one piece of pixel data written to one pixel. The surrounding region uses lower resolution with one piece of pixel data written to multiple pixels, optimizing the balance between image quality and power consumption.
2Measurement precision
If the resolution of the liquid crystal panel is increased to eliminate the screen door effect, then the image quality is improved, but the amount of data to be transferred increases
Solution Approach 1:
The liquid crystal panel is divided into a center region and a surrounding region, with different pixel data writing strategies applied to each region. The center region uses one-to-one pixel data writing to maintain high resolution, while the surrounding region uses one-to-many pixel data writing to reduce data transfer and power consumption.
Solution Approach 2:
Different regions of the display panel are assigned different quality levels. The center region, where the user's line of sight is focused, maintains high resolution with one piece of pixel data written to one pixel. The surrounding region uses lower resolution with one piece of pixel data written to multiple pixels, optimizing the balance between image quality and power consumption.
3Use of energy by moving object
If the resolution in the surrounding portion is made lower than the center portion to reduce data transfer, then power consumption is reduced, but design and manufacturing of the display panel become difficult
Solution Approach 1:
The liquid crystal panel is divided into a center region and a surrounding region, with different pixel data writing strategies applied to each region. The center region uses one-to-one pixel data writing to maintain high resolution, while the surrounding region uses one-to-many pixel data writing to reduce data transfer and power consumption.
Solution Approach 2:
Instead of making the physical pixel density non-uniform across the panel, the patent inverts the approach by maintaining uniform physical pixel density but applying non-uniform pixel data writing strategies. This allows the display to achieve variable effective resolution without the manufacturing complexities of non-uniform pixel structures.
4Ease of manufacture
If a display panel with uniform resolution is used to avoid manufacturing difficulties, then ease of manufacture is improved, but visual boundaries appear at positions where display screen resolution changes
Solution Approach 1:
The liquid crystal panel is divided into a center region and a surrounding region, with different pixel data writing strategies applied to each region. The center region uses one-to-one pixel data writing to maintain high resolution, while the surrounding region uses one-to-many pixel data writing to reduce data transfer and power consumption.
Solution Approach 2:
Instead of making the physical pixel density non-uniform across the panel, the patent inverts the approach by maintaining uniform physical pixel density but applying non-uniform pixel data writing strategies. This allows the display to achieve variable effective resolution without the manufacturing complexities of non-uniform pixel structures.
Data Source
AI summary
An image display device includes a display panel having a uniform resolution, an image data conversion unit for converting first image data including a plurality of pieces of pixel data to second image data including a smaller number of pieces of pixel data, and a drive circuit for driving the display panel based on the second image data. The display panel has a first region in which one piece of the pixel data is written to one pixel and a second region in which one piece of the pixel data is written to two or more pixels, and has a third region and a fourth region. The image data conversion unit performs a calculation on the pixel data of the pixel in the fourth region, the calculation performed in accordance with a distance of the pixel from a reference position, and does not perform the calculation on the pixel data of the pixel in the third region.