Display Pixel Initialization Voltage Layout for Lower Power Modes

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Solution Overview

Problem

Existing display devices face challenges in reducing power consumption, particularly in scenarios where different pixel groups require varying levels of illumination.

Innovation Solution

A display device design that includes a first pixel surrounded by a light blocking layer and a second pixel not surrounded by the layer, with separate initialization voltage lines for each, allowing for differential transistor control in different modes to reduce power consumption by selectively turning off certain pixel groups.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by stationary object

If all pixels are driven with the same initialization voltage, then the device complexity is reduced, but power consumption cannot be optimized for different pixel groups

Engineering Contradiction:

Improvepower consumptionVSAvoiddevice complexity

Core Design Contradiction:

Use of energy by stationary objectVSDevice complexity

Solution Approach 1:

The display device segments pixels into different groups (first pixels and second pixels) based on their surrounding light blocking layers, and provides separate initialization voltage lines for each group. This segmentation allows independent voltage control for different pixel groups, enabling optimized power consumption without significantly increasing overall device complexity

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different initialization voltages are applied to different pixel groups based on their specific requirements. First pixels receive a first initialization voltage while second pixels receive a second initialization voltage, allowing each group to operate with optimal voltage levels for their specific display characteristics and power consumption needs

Inventive Principle:

Principle #3Local quality

2Use of energy by stationary object

If separate initialization voltage lines are provided for different pixel groups, then power consumption is reduced, but the number of conductive lines increases

Engineering Contradiction:

Improvepower consumptionVSAvoidnumber of conductive lines

Core Design Contradiction:

Use of energy by stationary objectVSDevice complexity

Solution Approach 1:

The initialization voltage delivery system is segmented into separate lines for different pixel groups. First initialization voltage lines are connected to first pixels while second initialization voltage lines are connected to second pixels, enabling group-specific voltage control and optimized power consumption

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The separate initialization voltage lines serve multiple functions: they provide initialization voltages for different pixel groups, enable mode-specific voltage control (first mode and second mode), and allow the display device to optimize power consumption based on operational requirements while maintaining backward compatibility

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Use of energy by stationary object

If different initialization voltages are applied to different pixel groups, then power consumption is optimized, but manufacturing precision requirements increase

Engineering Contradiction:

Improvepower consumptionVSAvoidmanufacturing precision

Core Design Contradiction:

Use of energy by stationary objectVSManufacturing precision

Solution Approach 1:

The display device is segmented into distinct pixel groups with dedicated initialization voltage lines for each group. This segmentation allows independent voltage control and initialization for different pixel types, enabling optimized power consumption while maintaining manageable manufacturing precision through modular design

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different initialization voltages are applied locally to different pixel groups based on their specific requirements. First pixels receive voltages suitable for their configuration while second pixels receive different voltages, allowing optimized power consumption for each group with standardized manufacturing processes for each segment

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS20260018127A1Display device and electronic device including the same

Publication Date: 2026.01.15 SAMSUNG DISPLAY CO LTD

AI summary

A display device includes: a substrate; a first pixel on the substrate; a second pixel on the substrate and surrounded by a light blocking layer; a data line connected to the first and second pixels; first and second gate lines connected to the first and second pixels, respectively; a first initialization voltage line transmitting a first initialization voltage; and a second initialization voltage line configured transmitting a second initialization voltage, wherein, in a first mode, the first initialization voltage has a voltage of a magnitude capable of turning on a first transistor of the first pixel, in a second mode, the first initialization voltage has a voltage of a magnitude capable of turning off the first transistor of the first pixel, and in the first and second modes, the second initialization voltage has a voltage of a magnitude capable of turning on the first transistor of the second pixel.