Integrated Driver Board for Folding Screen Display Thickness Reduction

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Solution Overview

Problem

Current folding screen display products face issues with high cost, increased thickness, and complex assembly due to dual independent driver boards, which lead to difficulties in grasping and fixing the boards during assembly, resulting in potential damage and increased weight.

Innovation Solution

A folding screen display device design that uses a single display control circuit board to drive both the main and sub cells, reducing the thickness and cost by integrating a timer control circuit and eliminating redundant components, and simplifying the assembly process through automatic alignment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If dual independent driver boards are used to control main cell and sub cell, then each cell can be controlled independently, but the device thickness increases, weight increases, and assembly complexity increases

Engineering Contradiction:

Improveindependent cell control capabilityVSAvoidmodule thickness

Core Design Contradiction:

Adaptability or versatilityVSLength of stationary object

Solution Approach 1:

The patent combines two independent driver boards into a single integrated driver board that controls both the main cell and sub cell. The driver board includes a first driving circuit connected to the main cell through a first COF and a second driving circuit connected to the sub cell through a second COF, eliminating the need for separate driver boards and reducing overall thickness.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The single driver board is designed with multi-functional capability to control both display cells independently. It integrates multiple driving circuits that can separately manage the main cell and sub cell, providing universal control functionality that replaces multiple specialized components.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If dual independent driver boards are used, then each cell has dedicated control, but manufacturing cost increases and assembly difficulty increases

Engineering Contradiction:

Improvededicated control for each cellVSAvoidassembly process simplicity

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The patent merges two separate driver boards into one integrated unit, reducing the number of components that need to be handled during assembly. This single driver board is positioned in a groove formed by the side frame and backlight module, simplifying the assembly process and reducing manufacturing complexity.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The driver board serves as an intermediary component that integrates multiple control functions. By positioning it in the groove structure and connecting it through COFs to both cells, it mediates the control signals between the control chip and both display cells, simplifying the overall system architecture.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Adaptability or versatility

If dual independent driver boards are used, then comprehensive control is achieved, but the device weight increases

Engineering Contradiction:

Improvecomprehensive control capabilityVSAvoiddriver board weight

Core Design Contradiction:

Adaptability or versatilityVSWeight of stationary object

Solution Approach 1:

The patent combines the functionality of two driver boards into a single integrated driver board, directly reducing the total weight of the stationary components. The integrated design eliminates redundant structural elements and reduces the overall mass while maintaining comprehensive control capability.

Inventive Principle:

Principle #5Merging (Combining)

4Adaptability or versatility

If dual independent driver boards are used, then each cell can be controlled separately, but the overall device cost increases

Engineering Contradiction:

Improveseparate cell control functionalityVSAvoidproduction cost

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The patent merges two separate driver boards into one integrated unit, reducing component count and assembly steps. This integration lowers production costs by reducing the number of separate parts that need to be manufactured, procured, and assembled, while still providing separate control functionality for both cells through its integrated circuits.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS11531240B2Folding screen display device

Publication Date: 2022.12.20 BEIJING BOE DISPLAY TECH CO LTD

AI summary

The present disclosure discloses a folding screen display device, and the folding screen display device includes: a main cell and a sub cell arranged in a stacked mode; a backlight module arranged on a side, facing away from the main cell, of the sub cell; a display control circuit board arranged on a side, facing away from the sub cell, of the backlight module; and a cable pinboard arranged on a side frame of the backlight module; where the display control circuit board has a timer control circuit for outputting a timer control signal to the main cell and the sub cell; the timer control circuit is electrically connected with the main cell through a first COF; the timer control circuit is electrically connected with the cable pinboard; and the cable pinboard is electrically connected with the sub cell through a second COF.