Pixel Array Voltage Segmentation for Transmittance and Repair
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Solution Overview
Problem
In liquid crystal display devices, a lack of sufficient voltage difference between the electrode film and the common electrode restricts transmittance, leading to malfunctioning pixel structures appearing as dark spots due to short-circuiting.
Innovation Solution
A pixel array design incorporating multiple scan lines, data lines, pixel electrodes, switch elements, and conductive lines with different voltage connections, allowing for a voltage difference between the first and second voltages applied to the conductive lines and common lines to enhance transmittance and repair damaged pixel units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the electrode film and common electrode are connected to the same common voltage, then the pixel structure is simplified and easier to manufacture, but the transmittance of the liquid crystal display device is restricted due to insufficient voltage difference
Solution Approach 1:
The common voltage supply is segmented into two separate voltage sources: a first common voltage for the first common line and a second common voltage for the second common line. This segmentation allows different voltage differences to be applied to different pixel regions, thereby improving transmittance while maintaining manufacturing simplicity through the use of standard thin-film transistor switching circuits.
Solution Approach 2:
Different voltage conditions are applied to different spatial regions of the display. The first pixel electrode region receives a first common voltage while the second pixel electrode region receives a second common voltage, creating local optimization of voltage difference and transmittance in each region without requiring complete redesign of the entire pixel structure.
2Device complexity
If the electrode film and common electrode are connected to the same voltage, then the device structure is simplified, but damaged pixel units cannot be repaired and appear as permanent dark spots
Solution Approach 1:
The common voltage supply system is segmented into independent first and second common voltage lines, each可控 by separate switching elements. This segmentation enables independent control and repair of different pixel regions, allowing damaged pixel units to be repaired by adjusting voltage application without affecting the entire display structure.
Solution Approach 2:
The voltage parameter is changed from a single common voltage to two different common voltages (first common voltage and second common voltage). This parameter change enables flexible voltage control that can repair damaged pixels by applying appropriate voltage differences while maintaining overall structural simplicity.
Data Source
AI summary
A pixel array including a first common line, a first conductive line, a first connection line, a second common line, a second conductive line, a third common line, and a first connection structure is provided. The first common line is located on a first side of a first scan line. The first conductive line includes a first extending portion and a second extending portion. The first connection line crosses the first scan line so as to electrically connect the first extending portion to the second extending portion. The second common line is located on a first side of a second scan line. The second conductive line includes a third extending portion and a fourth extending portion. The first connection structure electrically connect the second common line to the third common line.