Internal Control Signal Regulation Circuit for Semiconductor Packaging

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Solution Overview

Problem

During the packaging process of semiconductor memory devices, variations in internal control signals such as current, voltage, and frequency occur, requiring time-consuming and costly measurements and regulations to maintain signal integrity.

Innovation Solution

An internal control signal regulation circuit that automatically detects and adjusts internal control signals by comparing them with external signals, using a programming test unit and code processing unit to generate selection signals and programming codes, and programs fuses to maintain signal consistency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If manual measurement and regulation of internal control signals is performed during packaging process, then signal integrity is maintained, but time consumption and cost increase significantly

Engineering Contradiction:

Improvesignal integrityVSAvoidtime consumption

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent applies preliminary action by performing fuse programming during the wafer process before packaging. The internal control signal is measured and regulated during wafer fabrication, and fuses are programmed to compensate for variations. This advance preparation eliminates the need for time-consuming measurements during packaging, while maintaining signal integrity through pre-established compensation mechanisms.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent implements self-service through automatic measurement and regulation systems that continuously monitor internal control signals and adjust parameters without manual intervention. The system uses automated test equipment to measure signal characteristics, process results, and program fuses automatically, replacing manual measurement and regulation operations throughout the manufacturing process.

Inventive Principle:

Principle #25Self-service

2Reliability

If manual measurement and regulation of internal control signals is performed during packaging process, then signal variations are corrected, but manufacturing cost increases

Engineering Contradiction:

Improvesignal consistencyVSAvoidmanufacturing cost

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent shifts the measurement and regulation operations to the wafer process stage, performing fuse programming before packaging. This preliminary action consolidates quality control activities into an earlier manufacturing stage, reducing packaging process complexity and associated costs while maintaining signal consistency through pre-programmed fuse configurations.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent replaces manual measurement and regulation operations with automated electronic systems. Test equipment automatically measures internal control signal characteristics, processes measurement data, and programs fuses without manual intervention. This substitution of manual mechanical operations with automated electronic systems reduces labor costs and manufacturing complexity.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Manufacturing precision

If fuse programming is performed using laser beam, then connection states are changed precisely, but process complexity and equipment requirements increase

Engineering Contradiction:

Improveconnection state precisionVSAvoidequipment requirements

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent replaces laser-based fuse programming with electrical programming methods. Instead of using laser beams to physically change fuse connection states, the system applies electrical currents or voltages to program fuses. This substitution maintains precise control over connection states while eliminating the need for complex laser equipment and reducing overall process complexity.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS9201415B2Internal control signal regulation circuit

Publication Date: 2015.12.01 SK HYNIX INC

AI summary

An internal control signal regulation circuit includes a programming test unit configured to detect an internal control signal in response to an external control signal and generate a selection signal, test codes and a programming enable signal; and a code processing unit configured to receive the test codes or programming codes in response to the selection signal and regulate the internal control signal.