Display Device Independent Scan Drivers

Solution Overview

Problem

Existing display devices for smartphones and similar devices lack an efficient method to independently drive front and side display regions, leading to increased power consumption when side display regions display still images.

Innovation Solution

A display device design featuring separate scan drivers for front and side display regions, with some scan lines at different layers, allowing independent control of frame frequencies, particularly using a low-frequency driving mode for side regions to reduce power consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Use of energy by moving object

If side display regions display still images at low frequency, then power consumption is reduced, but independent driving control of front and side regions is lacking

Engineering Contradiction:

Improvepower consumptionVSAvoidindependent driving control

Core Design Contradiction:

Use of energy by moving objectVSAdaptability or versatility

Solution Approach 1:

The display device divides the display panel into multiple independent display regions (front display region and side display regions), each with its own scan lines and data lines. Separate scan drivers are provided for each region, enabling independent control of frame frequencies - the front display region can operate at normal frequency while side regions display still images at low frequency, thus reducing power consumption while maintaining adaptability

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces a multi-layer structure where scan lines are arranged at different layers. Specifically, first scan lines for the front display region and second scan lines for side display regions are positioned at different layers, allowing independent signal transmission and control without interference, thereby enabling separate driving modes for different regions

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Adaptability or versatility

If separate scan drivers are provided for front and side display regions, then independent driving is enabled, but device complexity increases

Engineering Contradiction:

Improveindependent driving controlVSAvoidnumber of scan drivers

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The display device divides the display panel into multiple independent display regions (front display region and side display regions), each with its own scan lines and data lines. Separate scan drivers are provided for each region, enabling independent control of frame frequencies - the front display region can operate at normal frequency while side regions display still images at low frequency, thus reducing power consumption while maintaining adaptability

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The data driver is designed to supply data signals to both first data lines and second data lines, serving multiple display regions with a single driver unit. This multi-functional approach reduces the number of separate drivers needed, as the data driver handles both front and side regions, partially compensating for the increased complexity from having separate scan drivers

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS10861409B2Display device having a plurality of display regions

Publication Date: 2020.12.08 SAMSUNG DISPLAY CO LTD

AI summary

A display device includes a first display region including a plurality of first pixels connected to first scan lines and first data lines, a second display region at one side of the first display region, the second display region including a plurality of second pixels connected to second scan lines and second data lines, a first scan driver configured to supply a scan signal to the first scan lines, a second scan driver between the second display region and the first scan driver, the second scan driver being configured to supply a scan signal to the second scan lines, and a data driver configured to supply a data signal to the first data lines and the second data lines, wherein some of the first scan lines and the second scan lines are at different layers.