Display Panel Staggered Transparent Electrodes Brightness Uniformity
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Solution Overview
Problem
Liquid crystal display devices face issues with uneven brightness, which affects display quality and user experience, as existing technologies have not effectively mitigated this problem.
Innovation Solution
A display panel design featuring a pair of substrates with a birefringent medium layer, pixel electrodes, common electrodes, and transparent electrodes arranged in a staggered manner to allow for vertical projections of electrodes to overlap, creating gaps between first and second transparent electrodes for electrical insulation and enabling brightness compensation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a conventional liquid crystal display structure is used, then the device can display images, but the brightness of the display picture is uneven
Solution Approach 1:
The transparent electrode is divided into a first transparent electrode and a second transparent electrode, which are arranged in a staggered manner with gaps between them. This segmentation allows different voltage applications to different regions, enabling brightness compensation and achieving uniform display brightness across the panel.
Solution Approach 2:
The patent introduces a spatial arrangement dimension by positioning the first and second transparent electrodes in a staggered configuration rather than a conventional single-layer arrangement. This dimensional reorganization enables overlapping vertical projections with gaps, creating the capability for differential voltage control and brightness uniformity.
2Reliability
If the first transparent electrode and second transparent electrode are closely arranged, then the electrode coverage is high, but the electrical insulation between them is insufficient
Solution Approach 1:
The gap between the first transparent electrode and second transparent electrode is strategically positioned at specific locations where electrical insulation is most critical. This localized insulation approach ensures reliable electrical separation while maintaining high overall electrode coverage area for optimal display performance.
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 design achieves even brightness across the display panel by allowing for differential voltage application to sub-pixels, ensuring consistent display quality and improved user experience.
Implementation Method 1
a birefringent medium layer sandwiched between the pair of substrates
Implementation Method 2
The liquid crystal display device utilizes a liquid crystal layer which has a birefringent property
Data Source
AI summary
A display panel includes a pair of substrates, a pixel electrode, a common electrode, a first transparent electrode, and a second transparent electrode. A plurality of sub pixels is defined on the pair of substrates. The first transparent electrode corresponds to at least one of the plurality of sub pixels. A vertical projection of the first transparent electrode, a vertical projection of a part of the pixel electrode of the sub pixel corresponding to the first transparent electrode, and a vertical projection of a part of the common electrode of the sub pixel corresponding to the first transparent electrode on the substrates are overlapped. The second transparent electrode corresponds to the corresponding sub pixel. A vertical projection of the second transparent electrode, a vertical projection of another part of the pixel electrode of the sub pixel corresponding to the second transparent electrode, and a vertical projection of another part of the common electrode of the sub pixel corresponding to the second transparent electrode on the substrates are overlapped. A gap exists between the first transparent electrode and the second transparent electrode.