LED Display Driving for 3D Luminance Compensation
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Solution Overview
Problem
Existing display technologies using LED pixels face challenges in maintaining high luminance levels when displaying 3D images due to the luminance reduction caused by alternately displaying left and right images through 3D glasses, which results in lower perceived image brightness.
Innovation Solution
A display device and method that identifies the current magnitude or application time based on luminance information, adjusts current or time to increase luminance by a preset ratio for 3D images, and generates synchronization signals for 3D glasses to enhance luminance while displaying left and right images alternately.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If current magnitude or application time is increased to maintain luminance for 3D images, then luminance is improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic luminance adjustment by detecting whether the displayed image is 2D or 3D and automatically adjusting the current magnitude or application time accordingly. The driver dynamically modifies driving parameters based on image type, increasing current or time for 3D images to compensate for luminance reduction through glasses, while maintaining normal levels for 2D images to conserve power.
Solution Approach 2:
The system changes physical parameters (current magnitude and application time) of the LED pixels based on the detected image type. For 3D images, the driver increases either the current magnitude or the application time of current to LED pixels, thereby adjusting the luminance parameter to compensate for the luminance reduction caused by 3D glasses.
2Illumination intensity
If current is increased to compensate for luminance reduction through 3D glasses, then luminance is improved, but heat generation increases
Solution Approach 1:
The system dynamically adjusts current application time based on detected image type. For 3D images, the driver increases the application time of current to LED pixels rather than continuously maintaining high current levels, thereby compensating for luminance reduction while limiting heat generation through time-based control rather than continuous high-power operation.
3Adaptability or versatility
If alternately displaying left and right images is used to achieve 3D effect, then 3D viewing experience is improved, but luminance is reduced
Solution Approach 1:
The system applies preliminary anti-action by detecting the image type in advance and proactively adjusting the current magnitude or application time before the 3D display effect is rendered. The driver compensates for the anticipated luminance reduction by increasing driving parameters for 3D images, thereby preventing the luminance degradation from being perceived by the user.
Solution Approach 2:
The driver changes the electrical parameters (current magnitude and application time) supplied to LED pixels based on the detected image type. When a 3D image is detected, the system increases these parameters to compensate for the luminance reduction that occurs when viewing through 3D glasses, thereby maintaining acceptable luminance levels for the 3D viewing experience.
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 maintains or enhances luminance levels for 3D images by dynamically adjusting current or application time, ensuring the perceived brightness is not degraded by 3D glasses, thus improving the 3D viewing experience.
Implementation Method 1
A light emitting diode (LED) is a semiconductor light emitting device that converts electric current into light
Data Source
AI summary
Disclosed is a display device including a display including a plurality of LED pixels and a driver. The display device identifies at least one of a magnitude of a current or an application time of the current to be applied to the plurality of LED pixels based on luminance information of an input image. Based on the input image being identified as a two-dimensional (2D) image, the display device controls the driver to control the current to be applied to the plurality of LED pixels based on the identified at least one of the magnitude of the current or the application time of the current, and based on the input image being identified as a three-dimensional (3D) image, controls the driver to obtain a left image and a right image included in the input image and alternately display the left image and the right image.