Capacitor Integrated Display Substrate Reducing Circuit Board Elements

Solution Overview

Problem

Conventional display devices, such as LCD and OLED devices, have complex circuit boards with numerous elements, leading to increased size and manufacturing costs due to the integration of multiple components.

Innovation Solution

A display substrate with a capacitor structure comprising a substrate, first and second capacitor electrodes, and a transparent conductive electrode, where the capacitor is integrated on the substrate to reduce the number of elements on the circuit board, allowing for charge storage and discharge, thereby decreasing the device size and manufacturing costs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If multiple elements (driving IC, capacitors) are integrated on the circuit board, then the driving function is improved, but the circuit board size and structural complexity increase

Engineering Contradiction:

Improvedriving functionVSAvoidcircuit board structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges the capacitor element from the circuit board into the display substrate itself. The capacitor is formed using the same substrate and conductive layers as the display structure, combining two previously separate components (display substrate and circuit board elements) into a single integrated structure, thereby reducing overall device complexity while maintaining driving functionality

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The display substrate is given multiple functions: it serves both as the display structure support and as the housing for the capacitor element. The same substrate that supports the liquid crystal display structure also carries the capacitor electrodes and dielectric layers, making the substrate a multi-functional component that eliminates the need for separate circuit board elements

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If multiple elements are integrated on the circuit board, then the driving function is improved, but the overall device size increases

Engineering Contradiction:

Improvedriving functionVSAvoidcircuit board area

Core Design Contradiction:

ReliabilityVSArea of stationary object

Solution Approach 1:

The patent merges the capacitor element from the circuit board into the display substrate itself. The capacitor is formed using the same substrate and conductive layers as the display structure, combining two previously separate components (display substrate and circuit board elements) into a single integrated structure, thereby reducing overall device complexity while maintaining driving functionality

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The capacitor element is relocated from the horizontal plane of the circuit board to the vertical stacking of the display substrate layers. By utilizing the thickness dimension of the display substrate for capacitor placement, the design eliminates the need for additional horizontal space on the circuit board, effectively reducing the overall device footprint

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Reliability

If multiple elements are integrated on the circuit board, then the driving function is improved, but the manufacturing cost increases

Engineering Contradiction:

Improvedriving functionVSAvoidmanufacturing cost

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent merges the capacitor element from the circuit board into the display substrate itself. The capacitor is formed using the same substrate and conductive layers as the display structure, combining two previously separate components (display substrate and circuit board elements) into a single integrated structure, thereby reducing overall device complexity while maintaining driving functionality

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The display substrate is given multiple functions: it serves both as the display structure support and as the housing for the capacitor element. The same substrate that supports the liquid crystal display structure also carries the capacitor electrodes and dielectric layers, making the substrate a multi-functional component that eliminates the need for separate circuit board elements

Inventive Principle:

Principle #6Universality (Multi-functionality)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The integration of the capacitor on the display substrate reduces the number of elements on the circuit board, minimizing the device size and lowering manufacturing costs while maintaining image display quality.

Implementation Method 1

a first capacitor electrode, a dielectric layer, a second capacitor electrode... Electric charge may thus be charged or discharged in the capacitor

Methodology Applied

Scientific EffectCapacitance: Capacitance

Data Source

PatentUS7548282B2Display substrate, method of manufacturing the same and display device having the same

Publication Date: 2009.06.16 SAMSUNG DISPLAY CO LTD

AI summary

A display substrate includes a substrate, a first capacitor electrode, a dielectric layer, a second capacitor electrode, and a transparent conductive electrode. The substrate includes an effective display region and a non-effective display region that surrounds the effective display region. The first capacitor electrode is in the non-effective display region. The dielectric layer is on the first capacitor electrode. The second capacitor electrode is on the dielectric layer corresponding to the first capacitor electrode. The transparent conductive electrode is positioned substantially in the effective display region. Therefore, the number of elements is decreased so that a size and a manufacturing cost of a display device are reduced.