Display Device Light Blocking Pattern Transistor Protection
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Solution Overview
Problem
Display devices face issues with physical and electrical characteristics of transistors changing due to light exposure, leading to potential disconnection between pixel electrodes and transistors, which affects the reliability and performance of the display.
Innovation Solution
Incorporating a light blocking pattern that overlaps with transistors to prevent light from affecting their physical and electrical characteristics, while ensuring that bridges connecting subpixel electrodes to transistors do not overlap with the light blocking pattern, thus maintaining connectivity and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a light blocking pattern is added to block light from transistors, then reliability is improved, but device complexity increases
Solution Approach 1:
The light blocking pattern is merged with the color filter layer, allowing the same layer to serve both light blocking and color filtering functions. This integration prevents the need for separate light blocking structures, thereby improving reliability while minimizing increases in device complexity
Solution Approach 2:
The color filter layer is designed to perform multiple functions: it filters light to produce display colors and simultaneously blocks light from reaching the transistor. This multi-functionality addresses the technical contradiction by achieving light blocking without adding dedicated light blocking structures
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 effectively blocks light from reaching transistors, preventing changes in their characteristics and reducing the risk of disconnection, thereby enhancing the reliability and display quality of the device.
Implementation Method 1
a light blocking pattern that overlaps at least one of the first transistor and the second transistor
Data Source
AI summary
A display device according to an embodiment includes: a substrate; and a plurality of pixels, the plurality of pixels including a first pixel, a second pixel and a third pixel. Each of the plurality of pixels including a gate line extends in a first direction; a first transistor and a second transistor connected with the gate line; a pixel electrode that includes a first subpixel electrode and a second subpixel electrode; a first bridge that connects the first subpixel electrode and the first transistor; and a second bridge that connects the second subpixel electrode and the second transistor. At least one of the second pixel and the third pixel includes a light blocking pattern that overlaps at least one of the first transistor and the second transistor. The first bridge and the second bridge do not overlap or cross the light blocking pattern in a plan view.