Organic Light Emitting Display Subpixel Control
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Solution Overview
Problem
Existing organic light emitting display devices cannot individually control the light emission times of red, green, and blue subpixels due to their shared scan lines, leading to differences in light emitting efficiency and durability characteristics.
Innovation Solution
The organic light emitting display device is designed with subpixels of the same color connected to separate scan lines and light emitting control lines, allowing for independent control of light emission times based on the efficiency and durability characteristics of each subpixel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If red, green and blue subpixels are connected with a single shared scan line, then device complexity is reduced, but individual control of light emission times for each subpixel color is lost
Solution Approach 1:
The invention divides the scan line control into separate scan lines for each subpixel color (red, green, blue). Each scan line independently controls its corresponding subpixel group, enabling individual light emission time control while maintaining manageable device complexity through systematic segmentation.
Solution Approach 2:
The invention adds a new dimension to the control structure by introducing separate scan lines for each color channel. This dimensional expansion in the control architecture enables independent timing control of each subpixel color without collapsing the system into a single shared control line.
2Adaptability or versatility
If separate scan lines are used for each subpixel color, then individual light emission time control is achieved, but device complexity increases
Solution Approach 1:
Each separate scan line is designed to perform multiple functions: it controls both the scanning operation and the light emission timing for its corresponding subpixel color. This multi-functionality reduces the need for additional dedicated control lines, thereby limiting the increase in device complexity while achieving individual light emission control.
Solution Approach 2:
The invention merges the scanning function and light emission control function into the same scan lines. By combining these functions, the patent avoids the need for separate control mechanisms, thus achieving individual subpixel control with minimal increase in overall device complexity.
3Ease of operation
If light emission times are not individually controlled, then device operation is simplified, but light emitting efficiency and durability characteristics deteriorate
Solution Approach 1:
The invention enables dynamic adjustment of light emission time parameters for each subpixel color based on their specific efficiency and durability characteristics. By allowing parameter optimization for each color channel, the system achieves improved reliability and longevity while maintaining straightforward control operations through the standardized scan line interface.
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 configuration enables precise control of light emission times for each subpixel color, optimizing light emitting efficiency and durability, and ensuring proper white balance and image display.
Implementation Method 1
An organic light emitting display device is a flat panel display device that uses organic light emitting diodes to emit light by re-combination of electrons and holes
Data Source
AI summary
An organic light emitting display device, which can independently (or freely or individually or arbitrarily) control light emission times of red, green and blue subpixels and a driving method thereof. The organic light emitting display device includes a plurality of subpixels connected with scan lines, light emitting control lines, and data lines; a scan driver for driving the scan lines and the light emitting control lines; and a data driver for driving the data lines. Here, the subpixels connected with one of the light emitting control lines generate lights of a same color.