Polarizer Unit Blocking Portion Common Electrode Voltage Drop
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Solution Overview
Problem
In large-sized liquid crystal display (LCD) devices, voltage drops across common electrodes can lead to reduced display quality and the occurrence of ripples due to the large area and distance from voltage wiring, which existing technologies fail to adequately address.
Innovation Solution
A polarizer unit with a blocking portion electrically connected to the common electrode through a contact hole in a protection layer, acting as auxiliary wiring to supply common voltage and reduce voltage drops, is integrated into the display device structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the common electrode area is increased to support large-sized display devices, then the display size is improved, but voltage drops and ripples occur due to the large distance from voltage wiring
Solution Approach 1:
The common electrode is segmented into multiple regions with separate contact holes allowing independent voltage supply. This divides the large electrode into smaller segments that can be independently controlled, reducing voltage drops across the entire electrode area and improving voltage distribution uniformity in large-sized displays
Solution Approach 2:
Contact holes serve as intermediary pathways between the voltage wiring and the common electrode. By introducing multiple contact holes as intermediaries, the patent enables distributed voltage supply to different regions of the large common electrode, effectively reducing voltage drops and preventing ripples
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 voltage drops across the common electrode, enhancing display quality and preventing ripples in large-sized LCD devices by ensuring consistent voltage distribution.
Implementation Method 1
a blocking portion that blocks transmittance of light
Implementation Method 2
a polarizing portion that polarizes light
Data Source
AI summary
A display device includes a display substrate, a liquid crystal layer disposed on the display substrate, a common electrode disposed on the liquid crystal layer, a first protection layer disposed on the common electrode, a polarizer unit disposed on the first protection layer, and a color conversion layer disposed on the polarizer unit. The polarizer unit includes a polarizing portion that polarizes light, and a blocking portion that blocks transmittance of light. The blocking portion is connected to the common electrode through a contact hole. The contact hole is an opening in the first protection layer.