Liquid Crystal Display Slit Electrode Optimization
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Solution Overview
Problem
Liquid crystal display panels face a challenge in reducing response time for image changes from 'white' to 'black' or 'black' to 'white', as shortening the gap length increases defective fractions and lowers yield due to foreign materials.
Innovation Solution
Optimizing the length of slits or comb-tooth electrodes in the liquid crystal display device, specifically setting them between 12 μm and 30 μm, with angles relative to video lines, to enhance liquid crystal response time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the gap length of the liquid crystal display panel is reduced to shorten liquid crystal response time, then the response time is improved, but the defective fraction increases due to foreign materials entering the panel
Solution Approach 1:
The second electrode is divided into multiple comb-like electrodes with slits, creating segmented electrode structures. This segmentation allows for optimized electric field distribution that improves liquid crystal response time without requiring reduced gap length, thereby avoiding the foreign material contamination issue.
Solution Approach 2:
The invention optimizes specific parameters including the slit width (12-30 μm), comb-like electrode width, and spacing between electrodes. By carefully controlling these dimensional parameters, the liquid crystal response time is shortened through enhanced electric field effects while maintaining a sufficient gap length to prevent foreign material contamination.
2Speed
If the gap length is reduced to improve response time, then liquid crystal switching speed increases, but manufacturing yield decreases due to foreign materials
Solution Approach 1:
The second electrode is segmented into comb-like structures with controlled slits, enabling faster liquid crystal switching through optimized electric field distribution while maintaining a larger gap length that prevents foreign material contamination during manufacturing.
Solution Approach 2:
By optimizing parameters such as slit width (12-30 μm), electrode width, and spacing, the invention achieves faster liquid crystal switching speeds without reducing the gap length, thereby maintaining high manufacturing yield while improving switching 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 configuration reduces the response time of liquid crystals, making it shorter than in existing technologies while maintaining manufacturing efficiency and reducing defects.
Implementation Method 1
generating an electric field by the first electrode and the second electrode
Implementation Method 2
driving a liquid crystal with the electric field, and modulating light transmitted through the liquid crystal layer
Data Source
AI summary
In a liquid crystal display device having a first planar electrode and a second electrode formed on the first electrode with an insulating film in between, the response time of a liquid crystal is made shorter than that in a related art.A liquid crystal display device includes: a first substrate having a first electrode, an insulating film provided in an upper layer than the first electrode, and a second electrode provided in an upper layer than the insulating film; a second substrate; and a liquid crystal sandwiched between the first substrate and the second substrate. The liquid crystal display device drives the liquid crystal by generating an electric field by the first electrode and the second electrode. The second electrode has plural slits closed at both ends, the first electrode is a planar electrode superimposed on the plural slits, and, given that the length of the respective slits is Ls, the length Ls of the respective slits satisfies 12 μm≦Ls≦30 μm, more preferably, 12μm≦Ls≦20 μm.