Display Device With Dual Voltage Lines for Optical Brightness
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Solution Overview
Problem
Display devices face challenges in compensating for brightness differences between areas with and without optical electronic devices, leading to uneven illumination.
Innovation Solution
The display device incorporates a substrate with first and second driving voltage lines, where the second driving voltage line provides a higher voltage to pixels in the optical area to compensate for brightness differences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a single driving voltage is applied to all pixels, then the device structure remains simple, but brightness uniformity deteriorates due to optical electronic devices blocking light in certain areas
Solution Approach 1:
The display panel is divided into a first area (with optical electronic devices) and a second area (without optical electronic devices). Separate driving voltage lines are provided for each area, allowing independent voltage control. This segmentation enables different driving voltages to be applied to different regions, compensating for the brightness difference caused by light blocking in the first area while maintaining structural clarity through distinct voltage line configurations.
Solution Approach 2:
The patent applies different driving voltages to different areas of the display panel based on their specific characteristics. The first area, which has optical electronic devices that block light, receives a different driving voltage compared to the second area. This local differentiation in voltage application ensures that each area achieves optimal brightness uniformity according to its specific optical conditions, rather than using a uniform voltage across the entire panel.
2Measurement precision
If the pixel density is increased in the optical area, then the resolution is improved, but the brightness compensation becomes more difficult due to fewer pixels per unit area
Solution Approach 1:
The patent changes the driving voltage parameter specifically for pixels in the first area where optical electronic devices are located. By adjusting the driving voltage, the patent compensates for the reduced pixel density effect and ensures that these pixels can achieve sufficient brightness despite having fewer pixels per unit area. This parameter adjustment allows the system to maintain both the desired resolution and brightness uniformity across different areas of the display panel.
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 ensures uniform brightness across areas with and without optical electronic devices, enhancing display quality.
Implementation Method 1
the second driving voltage line provides a second driving voltage higher than the first driving voltage to a pixel of the optical area
Data Source
AI summary
Disclosed is a display device including: a display panel including a display area comprising a normal area and an optical area, and a non-display area disposed around the display area, a substrate, and a first driving voltage line and a second driving voltage line on the substrate; and an optical electronic device disposed on the optical area, wherein the first driving voltage line provides a first driving voltage to a pixel of the normal area, and wherein the second driving voltage line provides a second driving voltage that is greater than the first driving voltage to a pixel of the optical area. Accordingly, the display device compensates for a difference in brightness between an optical area where an optical electronic device is arranged and a normal area where the optical electronic device is not arranged.