Display Device Impedance Control Units for Luminance Distortion
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Solution Overview
Problem
Display devices face challenges in maintaining consistent luminance due to external inputs, which can cause distortion in the image quality.
Innovation Solution
The implementation of impedance control units connected to data lines in the display panel, which adjust impedance in response to control signals, ensuring that the luminance of the display device is not distorted by external inputs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If impedance control units are added to adjust impedance of data lines, then luminance distortion is prevented and image quality is improved, but device complexity increases
Solution Approach 1:
An impedance control unit is introduced as an intermediary component between the data line and the pixel. This unit includes a control transistor that adjusts the impedance of the data line in response to an impedance control signal, thereby preventing luminance distortion caused by external inputs while maintaining signal integrity to the pixel.
Solution Approach 2:
The impedance control unit dynamically changes the electrical parameter (impedance) of the data line based on control signals. By adjusting the impedance value in response to external inputs, the system maintains consistent luminance output and prevents image quality degradation without requiring fundamental redesign of the display architecture.
2Reliability
If impedance control units are implemented to maintain consistent luminance, then reliability is improved, but device complexity increases
Solution Approach 1:
The impedance control unit operates based on impedance control signals that provide feedback about the display operating conditions. The control transistor adjusts the data line impedance in response to these signals, creating a feedback mechanism that maintains luminance consistency and reliability while using existing control signal infrastructure.
Data Source
AI summary
A display device includes a display panel including a plurality of pixels for displaying an image and a plurality of data lines electrically connected with the pixels, and a panel driving block that receives an image signal from an outside and transmits a data signal to the display panel through the data lines. The display panel includes a plurality of impedance control units that are electrically connected with the data lines, respectively, and adjusts an impedance of each of the data lines in response to an impedance control signal.