Dual TFT Display Voltage Control for Luminance and Motion Blur
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Solution Overview
Problem
Current display devices with backlights face limitations in enhancing luminance and color expression power, particularly in liquid crystal display (LCD) panels, which require improved methods to overcome the inherent limitations of self-luminous panels.
Innovation Solution
The implementation of a dual TFT panel system with voltage control mechanisms, where multiple switching elements in each TFT panel adjust light penetration and output based on image frame data, with specific voltage levels applied to control luminance and color expression, particularly increasing voltage levels as object movement increases within the image frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a single TFT panel with voltage control is used to adjust light penetration, then luminance expression power is improved, but color expression power and contrast remain limited
Solution Approach 1:
The display device is divided into two separate TFT panels, each independently controlling light penetration. The first TFT panel controls backlight penetration to achieve luminance expression, while the second TFT panel controls light output from the first panel to enhance color expression and contrast. This segmentation allows each panel to specialize in specific display functions, resolving the limitation of single-panel designs.
Solution Approach 2:
The invention adds a second dimension of control by introducing a second TFT panel stacked along the light path. Instead of relying on a single panel to handle all control functions, the system uses multiple layers of control, where the first panel manages luminance and the second panel manages color and contrast, thereby expanding the system's adaptability without compromising luminance expression.
2Illumination intensity
If voltage levels are increased to improve luminance and color expression, then display performance is enhanced, but motion blurring increases due to slower response time
Solution Approach 1:
The system dynamically adjusts voltage levels applied to the first and second TFT panels based on the amount of object movement detected in the image frame data. When object movement is detected, the control unit modifies the voltage timing and magnitude to optimize both luminance/color expression and response speed, preventing motion blurring while maintaining enhanced display performance.
Solution Approach 2:
The control unit analyzes image frame data to detect object movement and uses this feedback to adjust the voltage application timing to the TFT panels. This feedback mechanism allows the system to adaptively optimize the balance between luminance/color expression power and response time, reducing motion blurring when objects are in motion while maintaining enhanced display performance when objects are stationary.
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
This approach significantly enhances luminance and color expression power by dynamically adjusting voltage levels in response to object movement, improving display performance and reducing motion blurring, thereby enhancing the overall image quality.
Implementation Method 1
a first TFT panel including a plurality of switching elements and configured to control the amount of light penetration of the backlight for the respective areas corresponding to the plurality of switching elements
Implementation Method 2
a color filter to filter the light output from the second TFT panel for each color
Data Source
AI summary
The present disclosure relates to a display device and an image display apparatus including the same. A display device according to an embodiment of the present disclosure comprises a backlight, a first TFT panel, a second TFT panel, and a color filter wherein, while a first voltage is applied, a second voltage higher than the first voltage is applied in response to an object within an image frame data input to the display device; while a third voltage is applied, a fourth voltage higher than the third voltage is applied in response to the object within the image frame data input to the display device; and in response to movement of the object, a fifth voltage higher than the second voltage is applied, and a sixth voltage higher than the fourth voltage is applied. Accordingly, luminance expression power may be improved.