OLED Transmitting Control Line Driver Signal Reduction
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Solution Overview
Problem
Traditional transmitting control line drivers for OLED displays require complex circuits with four driving signals, leading to increased cost and reliability issues due to their complex structure.
Innovation Solution
The design reduces the number of driving signals from four to two by modifying the circuit structure without adding components, using a single-pulse activating signal and two time sequence signal transmission lines to achieve the same functionality, thereby simplifying the circuit diagram and improving reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If four driving signals are used in the transmitting control line driver, then the driving function is achieved, but the circuit structure becomes extremely complex with eleven transistors and two capacitors per stage
Solution Approach 1:
The patent extracts and eliminates redundant control signals from the system. By analyzing the four original signals (clk1, clk1b, sp, rs), the invention identifies that only two signals are necessary to drive the circuit, removing the other two redundant signals and their associated complex circuitry.
Solution Approach 2:
The patent makes the remaining two control signals universal by designing them to perform multiple functions that were previously handled by separate dedicated signals. The first control signal handles both clocking and activation functions, while the second control signal manages timing and sequencing, replacing the need for four specialized signals.
2Reliability
If four driving signals are used, then the transmitting control function is achieved, but the circuit area increases and integrated circuit regions increase
Solution Approach 1:
The patent merges the functions of four separate control signals into two combined signals. The first control signal combines clocking and activation functions, while the second combines timing and sequencing functions, thereby reducing the total number of signal lines and associated circuit areas.
Solution Approach 2:
The two remaining control signals are designed with multi-functionality, where each signal performs multiple roles that were previously handled by separate dedicated signals, thereby reducing the overall circuit area required for signal distribution and control logic.
3Reliability
If four driving signals are used, then the transmitting control function is achieved, but the number of combined regions increases
Solution Approach 1:
The patent extracts and removes redundant control signal paths from the system. By eliminating two of the four original control signals and their associated combined regions, the invention reduces the number of signal combination points and simplifies the overall circuit architecture.
Solution Approach 2:
The remaining two control signals are designed to universally handle multiple control functions that were previously distributed across four separate signals, thereby reducing the number of combined regions needed in the circuit.
Data Source
AI summary
A transmitting control line driver, an OLED panel having same, and a display device. The transmitting control line driver comprises multiple stages of transmitting control line driver units. A first time sequence signal transmission line (Ck1) is coupled to first input ends (CKE1) in odd stages of the transmitting control line driver units and second input ends (CKE2) in even stages of the transmitting control line driver units. A second time sequence signal transmission line (CK2) is coupled to second input ends (CKE2) in the odd stages of the transmitting control line driver units and first input ends (CKE1) in the even stages of the transmitting control line driver units. A signal output end (out) of each stage of a transmitting control line driver unit is coupled to a third input end (in) of a subsequent stage of the transmitting control line driver unit.