Display Uniformity Correction Across Variable Use Angles
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Solution Overview
Problem
Existing liquid crystal displays suffer from gravitational vertical flow, leading to chroma and luminance deviations that affect the uniformity of the display, which existing technologies have not adequately addressed.
Innovation Solution
A method and device that utilize an angle sensor, stand, and measurement device to measure and store uniformity correction parameters for different use angles, enabling dynamic adjustment of display uniformity by referencing a correspondence table to correct chroma and luminance uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the display is used at different use angles, then the display can be adjusted to suit different viewing conditions, but gravitational vertical flow causes chroma and luminance deviation leading to non-uniform display quality
Solution Approach 1:
The patent performs preliminary measurement of uniformity correction parameters at multiple use angles before actual use. The measurement device captures uniformity data at various angles, and the system stores these pre-measured parameters in a lookup table, enabling fast reference during actual display operation without requiring real-time complex calculations
Solution Approach 2:
The patent implements a feedback mechanism where the measurement device continuously monitors display uniformity at different angles and the system adjusts correction parameters accordingly. The angle sensor detects the current use angle and provides feedback to retrieve appropriate correction parameters from storage, creating a closed-loop system that maintains uniformity across varying viewing conditions
2Manufacturing precision
If uniformity correction parameters are measured and stored for different use angles, then display uniformity can be dynamically adjusted, but the device complexity increases due to additional sensors and measurement equipment
Solution Approach 1:
The patent makes the measurement device multi-functional by enabling it to perform both initial calibration measurements and ongoing uniformity monitoring at different angles. The same measurement hardware serves multiple purposes: capturing uniformity data during manufacturing, verifying performance during use, and providing correction parameters, thereby reducing the need for separate dedicated equipment
Solution Approach 2:
The patent creates a digital copy of uniformity correction parameters stored in a lookup table within the display device. Instead of physically adjusting or replacing components, the system uses stored parameter data to correct uniformity issues through software-based correction algorithms, simplifying the physical device structure while maintaining precision
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively mitigates the effects of gravitational vertical flow by dynamically adjusting display uniformity based on pre-measured parameters, ensuring consistent chroma and luminance across varying use angles, thereby improving the visual quality of the display.
Implementation Method 1
An angle sensor is disposed on a display to detect a use angle of the display for adjusting the uniformity of the display
Implementation Method 2
The measurement device, opposite to the display, measures the frame uniformity of the display at at least one use angle
Data Source
AI summary
A method for adjusting the uniformity of a display is provided. The method includes the following steps. An angle sensor is disposed on a display. The display opposite to a measurement device is disposed on a rotation axis. The uniformity of a frame of the display at at least one use angle is measured by the measurement device, wherein the display is adjusted to a first use angle and is left still for a period of time, so that the uniformity of the display arranged at the first use angle has a first uniformity correction parameter; and a correspondence table relevant to the first use angle and the first uniformity correction parameter is stored to the display.