OLED Emission Driver Series Parallel Switching

Solution Overview

Problem

Standard OLED displays are limited to either progressive or simultaneous emission techniques and cannot selectively choose the appropriate technique based on the images to be displayed, lacking flexibility in operation modes.

Innovation Solution

An emission driving unit that includes first and second switches, configured to arrange emission driving blocks in series for progressive emission mode and in parallel for simultaneous emission mode, allowing the OLED display to selectively operate in either mode without structural changes, using switch control signals to manage the output of emission control signals.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the OLED display is designed to support only progressive emission mode, then the emission driving circuit can be simplified, but the adaptability to different display scenarios is reduced

Engineering Contradiction:

Improveemission mode adaptabilityVSAvoidemission driving circuit complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The emission driving circuit dynamically reconfigures its topology using switching elements (first and second switches) to change between series and parallel connections of emission driving blocks, allowing the same circuit to adapt to different emission modes (progressive or simultaneous) based on display requirements

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The emission driving circuit is designed with dual functionality by incorporating both progressive emission capability (through series connection of blocks) and simultaneous emission capability (through parallel connection of blocks), enabling a single circuit to perform multiple emission modes without requiring separate dedicated circuits for each mode

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If the OLED display is designed to support only simultaneous emission mode, then the emission driving circuit can be simplified, but the adaptability to different display scenarios is reduced

Engineering Contradiction:

Improveemission mode adaptabilityVSAvoidemission driving circuit complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The emission driving circuit dynamically reconfigures its topology using switching elements (first and second switches) to change between series and parallel connections of emission driving blocks, allowing the same circuit to adapt to different emission modes (progressive or simultaneous) based on display requirements

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The emission driving circuit is designed with dual functionality by incorporating both progressive emission capability (through series connection of blocks) and simultaneous emission capability (through parallel connection of blocks), enabling a single circuit to perform multiple emission modes without requiring separate dedicated circuits for each mode

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If separate emission driving circuits are designed for progressive and simultaneous emission modes, then the adaptability is improved, but the device complexity and manufacturing difficulty increase

Engineering Contradiction:

Improveemission mode adaptabilityVSAvoidmanufacturing complexity

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The patent merges the functionality of separate progressive emission driving circuits and simultaneous emission driving circuits into a single integrated emission driving circuit by sharing common emission driving blocks and using switching mechanisms to route signals differently, thereby achieving multi-mode capability without duplicating circuit components

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The emission driving circuit is designed with dual functionality by incorporating both progressive emission capability (through series connection of blocks) and simultaneous emission capability (through parallel connection of blocks), enabling a single circuit to perform multiple emission modes without requiring separate dedicated circuits for each mode

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS9552770B2Emission driver, organic light-emitting diode (OLED) display including the same, and electronic device

Publication Date: 2017.01.24 SAMSUNG DISPLAY CO LTD

AI summary

An emission driver, organic light-emitting diode (OLED) display including the same, and electronic device are disclosed. In one aspect, the emission driver includes first through (n)th emission circuits configured to output a plurality of emission control signals. The emission circuits are connected to a display panel of an OLED display via emission-lines. The emission driver also includes a plurality of first switches configured to electrically connect the emission circuits in series when the first switches are turned on and a plurality of second switches configured to electrically connect the emission circuits in parallel when the second switches are turned on. The second switches are further configured to be turned off when the first switches are turned on and the second switches are further configured to be turned on when the first switches are turned off.