Display Pixel Driving Layout With Sequential Data Distribution
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Solution Overview
Problem
The increasing size and resolution of display devices have led to higher manufacturing costs due to the need for a large number of output lines in data driving circuits.
Innovation Solution
A display apparatus design that reduces the number of output lines by utilizing a first and second pixel arrangement in odd and even columns, each with specific transistor configurations and gate signal timing to allow simultaneous activation of transistors, thereby reducing the number of output lines required.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the number of data lines and resolution are increased to improve display quality, then the manufacturing cost increases due to requiring more output lines in the data driving circuit
Solution Approach 1:
The patent merges the functions of multiple output lines into fewer output lines by using distribution transistors that can selectively connect different data lines to the same output line. This allows a single output line to serve multiple data lines through time-division or signal-division multiplexing, thereby reducing the total number of output lines required while maintaining the ability to drive high-resolution displays.
Solution Approach 2:
The distribution transistor is designed with multi-functionality to control the connection between different data lines and output lines. By using control signals, the distribution transistor can switch between different data lines, allowing one output line to perform multiple functions of driving different data lines sequentially or selectively, thus reducing the overall number of output lines needed.
2Device complexity
If the number of output lines is reduced to lower manufacturing cost, then the difficulty of signal distribution to multiple data lines increases
Solution Approach 1:
The distribution transistor acts as an intermediary component between the data lines and output lines. It mediates the signal distribution by selectively connecting different data lines to the same output line based on control signals. This intermediary device enables efficient signal distribution to multiple data lines using fewer output lines, maintaining ease of manufacture while reducing complexity.
Solution Approach 2:
The patent employs dynamic control of the distribution transistor through time-division or signal-division multiplexing. The distribution transistor switches between different data lines dynamically based on control signals, allowing a single output line to serve multiple data lines at different times or under different conditions. This dynamic approach maintains ease of signal distribution while reducing the number of output lines.
Data Source
AI summary
A display apparatus is disclosed that includes a first pixel arranged in a row and an odd column, and a second pixel arranged in the row and an even column. Each of the first pixel and the second pixel includes a light-emitting diode, a first transistor configured to output a current corresponding to a data signal, a second transistor transmitting the data signal to the first transistor, and a distribution transistor connected in series between the second transistor and a data line configured to supply the data signal. While the second transistor of the first pixel and the second transistor of the second pixel are simultaneously activated, the distribution transistor of the first pixel and the distribution transistor of the second pixel are sequentially activated.