LCD Electrode Slit Inclination for Aperture Ratio and Viewing Angle
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Solution Overview
Problem
Multi-domain liquid crystal display devices face challenges in maintaining high aperture ratio and image quality due to electric field disturbances at boundary regions and limited backlight intensity, which affects viewing angle and power consumption.
Innovation Solution
A liquid crystal display device with a first and second electrode, where slits on the electrodes are inclined at different angles, forming aperture regions that alternate in direction, allowing for increased aperture ratio without reducing image quality by suppressing electric field disturbances and optimizing pixel structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If slits are formed with different inclined angles in boundary regions to create multi-domain structure, then viewing angle characteristics are improved, but electric field disturbance occurs at boundary regions causing image display defects
Solution Approach 1:
The patent extracts and removes the slits from the boundary regions between different inclined angle regions. By eliminating slits in these critical boundary areas, the invention prevents electric field disturbance while maintaining the multi-domain structure's viewing angle benefits in the non-boundary regions.
Solution Approach 2:
The patent applies different slit configurations to different regions: slits are formed in regions with uniform inclined angles but deliberately omitted from boundary regions where inclined angles change. This local differentiation allows the invention to maintain viewing angle characteristics where appropriate while preventing image defects at critical boundaries.
2Productivity
If pixel area is reduced to increase the number of pixels for high definition, then productivity is improved, but aperture ratio decreases affecting brightness and power consumption
Solution Approach 1:
The patent segments the pixel structure into multiple aperture regions with different slit inclined angles. This segmentation allows each sub-region to contribute effectively to light transmission, maximizing the overall aperture ratio within the constrained pixel area and improving brightness without reducing pixel count.
3Use of energy by moving object
If aperture ratio is increased to improve brightness and reduce power consumption, then use of energy is improved, but image quality may be compromised due to electric field disturbance
Solution Approach 1:
By removing slits from boundary regions, the invention eliminates the source of electric field disturbance that would compromise image quality. This allows the aperture regions to be optimized for maximum light transmission and energy efficiency without suffering from the detrimental effects of boundary region slits.
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 enhances the aperture ratio of the pixel while maintaining high image quality and reducing power consumption by alternately forming slits with different inclined angles, effectively addressing electric field disturbances and improving viewing angles.
Implementation Method 1
liquid crystal sandwiched between the first substrate and a second substrate is driven by an electric field generated between the first electrode and the second electrode
Data Source
AI summary
Gate lines are arranged in a first direction. Drain lines are arranged in a second direction. A first electrode has slits formed therein. Aperture regions surrounded by the drain lines and the gate lines include an aperture region including the slits having a first inclined angle and an aperture region including the slits having a second inclined angle, the second inclined angle being different from the first inclined angle. The aperture region including the slits having the first inclined angle and the aperture region including the slits having the second inclined angle are alternately formed in the first direction. Within the aperture regions arranged adjacent to each other in the first direction, a first region and a second region forming a pair by being arranged so as to be opposed to each other via one of the gate lines form one of pixels.