Developed openings and line-profile controls
Complete first-short localization and developed images first.
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Compare each solution's purpose, inputs and limits.
For “RDL line-to-line shorts after fabrication”, check what each solution can answer before planning validation.
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BLNKK assessment notes
Update engineering conditions →Your next step
Compare purposes and limits now. Confirm key sample conditions before planning validation.
0 solutions selected0 of 5 relevant conditions confirmedNo solutions selected; these notes cover the current engineering problem.
Priority items to confirm · 5
01Initial interline short locatedUnconfirmed
Are pre-assembly / pre-stress shorts localized between adjacent RDL lines?
Record first-test timing, nets, and image coordinates. Leakage or high via resistance alone does not establish interline shorts.
Update engineering conditions →02Post-development profiles registerableUnconfirmed
Are same-space resist openings / profiles retained after development and before plating?
Compare identical layouts and abnormal / normal locations. Endpoint bridges cannot establish upstream exposure errors.
Update engineering conditions →03Post-strip metal profiles registerableUnconfirmed
Are metal profiles registerable after plating / resist stripping and before seed removal?
Retain thickness, sidewalls, and interline morphology. Post-etch images alone cannot assign all morphology to plating.
Update engineering conditions →04Residues and electrical data registerableUnconfirmed
Can post-seed / barrier-removal residues be registered to conductive shorts?
Pair SEM with electrical and necessary composition checks. Optical contrast does not directly prove conductive material.
Update engineering conditions →05Comparable structures and process historiesUnconfirmed
Are line density, seed / barrier, plating, and etch histories comparable within the batch?
Track removal and sidewall loss together. Do not enter universal overetch or current-density values.
Update engineering conditions →Relevant assessment paths
Plated-metal morphology controls
Complete plating-stage registration and comparable histories first.
Seed / barrier residue and line-loss controls
Complete residue / electrical registration, upstream profiles, and histories first.
Assessment preparation checklist
Discussion preparation based on the relevant engineering conditions; not mandatory supplier requirements or a record of evidence already available.
- Initial interline short located
- Post-development profiles registerable
- Post-strip metal profiles registerable
- Residues and electrical data registerable
1 more preparation item
- Comparable structures and process histories
Check the comparison table above for each solution’s specific inputs and applicability limits.
Questions to discuss
- Can initial shorted nets be registered to adjacent-line spaces?
- Are development, plating / stripping, and seed-removal stages registered?
- How are residues and electrical data confirmed while line loss is measured together?
Public references · 18
- Applied Materials authors / IMAPSource · Enabling a Robust Copper Seed Etch Process for Fine Line RDL by Electroplating on a Thin PVD Seed Layer ↗
View source notes and limits
Uses sections / SEM and electrical data to compare RDL seed residue, removal, and sidewall-loss tradeoffs.
A specific 2018 test wafer. Seed thickness, overetch, and line-width acceptance do not transfer to other structures.
- ASE · Failure Analysis Lab ↗
View source notes and limits
Lists capabilities for electrical failure localization, nondestructive X-ray inspection, and targeted cross-section / FIB analysis.
The service list does not guarantee detection rates at every RDL or microvia scale; sampling, structures, and destructive risks require confirmation.
- JSR · THB-111N negative-tone resist for copper RDL plating ↗
View source notes and limits
JSR Micro distinguishes THB-111N copper wiring from other THB grades and bumping applications.
Scope and limitations This is not a permanent dielectric or a short-free guarantee. The family 5–90 µm range and other grades’ bumping applications do not apply to THB-111N. What to prepare BLNKK suggests preparing thickness, linewidth/spacing, exposure and development settings, scum images, seed-layer details, plating chemistry and stripping results. Confirm with the supplier Confirm process windows, bath and substrate compatibility, opening profiles and stripping conditions; discuss how to distinguish resist residue from other short mechanisms.
- Entegris · Impact HV point-of-use high-viscosity photochemical filter ↗
View source notes and limits
The current page and February 2023 datasheet specify the HV configuration, 1 µm retention and 40°C maximum temperature, with temperature-qualified pressure limits.
Scope and limitations The retention rating does not guarantee removal of all nanoscale particles or bubble-free delivery. Use with underfill or EMC containing functional fillers is not documented and needs assessment of formulation changes. What to prepare BLNKK suggests documenting chemistry, viscosity, feed/filter-change histories, pressure drop, particles/bubbles, formulation changes and coating defects. Confirm with the supplier Confirm parts, compatibility, commissioning/changeout and retention/additive-preservation evidence at the actual flow, temperature and pressure.
- SUSS MicroTec · ACS200 Gen3 RDL resist coating/development ↗
View source notes and limits
The named page describes GYRSET, dispense and development; an official portfolio separately lists the platform.
Scope and limitations Uniform coating does not prove short-free RDL. Thin, warped or stacked wafers need handling verification. What to prepare BLNKK suggests preparing material grades, viscosity, topography, target thickness and exposure conditions, alongside opening and residue measurements. Confirm with the supplier Confirm dispense, developer, drying and handling modules, plus sample-specific acceptance criteria for thickness uniformity, openings and residues.
- ClassOne Technology · Solstice Wet Etch UBM/seed-metal isolation ↗
View source notes and limits
The product page describes isolation and the tradeoffs among uniformity, repeatability, undercut and dimensional loss.
Scope and limitations Published examples do not guarantee zero undercut or repair every short. Film removal and preservation of circuit dimensions both require validation. What to prepare BLNKK suggests preparing seed/barrier layers, thickness, linewidth/spacing, residue locations, available chemistries, and before/after topography and electrical results. Confirm with the supplier Confirm selectivity, endpoints and lateral-etch windows, then discuss residue criteria, dimensional loss and post-clean electrical-isolation tests.
- Yield Engineering Systems · TersOnus RDL seed-metal wet etch ↗
View source notes and limits
The named TersOnus Metal Etch section explicitly lists metals and seed removal.
Scope and limitations No target-stack selectivity or undercut result is published. Seed removal does not establish that plated bridges or other short mechanisms are resolved. What to prepare BLNKK suggests preparing film stacks, thickness, line/space dimensions and residue maps, plus permitted line loss and isolation acceptance criteria. Confirm with the supplier Confirm chemistry, uniformity, undercut/selectivity, wafer/panel handling and post-clean residue/electrical verification.
- Camtek · MicroProf AP photoresist thickness and profile comparison ↗
View source notes and limits
Camtek lists photoresist processes; its white paper explains MicroProf multi-sensor metrology and AP automation.
Scope and limitations Capability depends on sensors, optical models and patterns. Photoresist profiles alone do not establish electrical shorts or plating/seed-removal root causes. What to prepare BLNKK suggests preparing resist material, thickness/pattern dimensions, wafer sampling locations, process history and reference cross-sections or electrical results. Confirm with the supplier Confirm sensors, recipes, optical parameters and calibration; discuss repeatability at pattern edges, thickness variations and automated sampling locations.
- Asahi Kasei · Asahi Kasei SUNFORT TA fine-pattern dry film resist ↗
View source notes and limits
The TA page documents fine patterns, double-sided processing and exposure compatibility, without a complete grade-specific process window.
Scope and limitations Resist resolution does not establish finished-circuit yield or repair existing metal shorts. What to prepare BLNKK suggests preparing target line/space, stackup, surface condition, film-thickness needs and current exposure/development steps. Confirm with the supplier Confirm grades, lamination/exposure/development windows and compatibility with plating, stripping and adjacent materials.
- Filmetrics · Filmetrics F20 resist and dielectric thickness comparison ↗
View source notes and limits
The named KLA page documents photoresist, process-film and dielectric applications and distinguishes wavelength configurations.
Scope and limitations Coverage depends on configuration and stack. Do not borrow small-spot or automated-mapping specifications from other models; thickness results do not directly identify RDL shorts. What to prepare BLNKK suggests preparing materials, layer order, nominal thicknesses, optical constants, accessible measurement areas and reference thickness data. Confirm with the supplier Confirm wavelengths, spot/fixture, model parameters and standards; discuss fit quality, repeatability and configuration using actual stacks.
- Nagase ChemteX · Nagase ChemteX N-CE1 copper seed etchant ↗
View source notes and limits
The named section describes copper-seed/redistribution use and basic performance under specified conditions.
Scope and limitations Published rates/selectivity do not guarantee every stack, zero CD loss or undercut. Seed removal does not establish repair of thick plated bridges. What to prepare BLNKK suggests thickness, geometry, barrier and process/rinse records, with residue, linewidth, undercut and electrical comparisons. Confirm with the supplier Confirm stack-specific window, bath loading/life, barrier effects and rinse requirements, with geometry/electrical sample trials.
- Eurofins EAG Laboratories · EAG Auger seed/barrier residue analysis ↗
View source notes and limits
EAG documents small-area, bond-pad and cross-section analysis, including semi-quantitative methods and limitations.
Scope and limitations Chemical-state information is limited and insulators are difficult. Buried regions need preparation; detected metal alone does not prove a conductive bridge. What to prepare BLNKK suggests preparing shorted-net coordinates, images, stack/process records, matched controls and preparation history. Confirm with the supplier Confirm accessible targets, charging/sputtering treatment, quantitative references and correlation with electrical results.
- siconnex customized solutions GmbH · BATCHSPRAY Acid RDL seed / barrier wet etch ↗
View source notes and limits
The equipment page describes Acid Autoload; a separate Siconnex article discusses RDL removal and its failure modes. Neither qualifies your layout.
Scope and limitations Uniformity and endpoint sensing do not independently establish line isolation or eliminate undercut. Family-level performance figures are not universal specifications for this configuration. What to prepare BLNKK suggests preparing stack thicknesses, line/space dimensions, dielectrics and current etch history. Residue images, dimensional loss and short locations can guide matched comparisons. Confirm with the supplier Confirm chemistry, selectivity, endpoint interpretation, recirculation management and over-etch control. Agree on sample checks for remaining metal, line loss and electrical isolation.
- Unity Semiconductor · Wotan visible-pattern dual-sided AOI review ↗
View source notes and limits
The official Wotan entry documents these capabilities under UNITY-SC.
Scope and limitations An apparent bridge does not prove an electrical short; surface images do not reveal buried lines. The page gives no resolution qualification for the actual RDL. What to prepare BLNKK suggests preparing line/space, surface details, process images and electrical locations, with comparable normal/abnormal samples. Confirm with the supplier Confirm optical configuration, visibility, classification and feature recognition, plus image-to-electrical correlation.
- SCREEN Semiconductor Solutions · SC-80EX stepped / through-hole substrate spray coating ↗
View source notes and limits
SCREEN's catalogue explicitly describes stepped and through-hole coating for SC-80EX.
Scope and limitations Coating capability does not qualify fine-line RDL lithography, every hole geometry or electrical isolation. What to prepare BLNKK suggests preparing viscosity, target thickness, geometry and exposure needs, with coverage and post-development residue observations. Confirm with the supplier Confirm substrate/material compatibility, configuration and a trial window, including uniformity, residue and subsequent electrical checks.
- Nippon Kayaku Co., Ltd. · Nippon Kayaku NK disperse UT developer ↗
View source notes and limits
Nippon Kayaku lists UT developer features and Al/Cu applicability, not qualification of your RDL stack.
Scope and limitations Al/Cu applicability does not guarantee whole-stack corrosion immunity or scum-free openings. Developer cannot repair plated bridges; other cleaners’ conditions do not transfer. What to prepare BLNKK suggests preparing resist/thickness, exposure, stack and layout details. Record concentration, time, temperature and rinsing; retain matched images before/after plating. Confirm with the supplier Confirm grade/resist/metal compatibility and development/rinse windows. Agree on checks for scum, line shape, corrosion and subsequent plating/electrical results.
- Canon Semiconductor Equipment · FPA-8000iW panel packaging lithography ↗
View source notes and limits
The page lists ≤1.0 µm resolution, 52 × 68 mm or 55 × 65 mm fields and ≤200 nm overlay. The June 23, 2020 release also describes handling up to 10 mm panel warpage, subject to confirmation for the actual panel/configuration.
Scope and limitations Resolution/overlay ratings are not automatically the achieved resist linewidth, spacing or defect-free interconnects. Warpage shape, resist and alignment marks affect acceptance; the 10 mm handling description is not a guarantee for arbitrary panel profiles. What to prepare BLNKK suggests preparing panel material, size/thickness and warpage profiles, resist/exposure conditions, linewidth/spacing targets and overlay budgets, plus short locations, pattern measurements and handling failures. Confirm with the supplier Confirm field choice, resolution/overlay acceptance conditions, resist/focus window, supported panels for Vacuum Assist, and limits on warped-panel handling and exposure.
- ClassOne Technology · Solstice CopperMax copper RDL plating ↗
View source notes and limits
ClassOne’s RDL page explains the chamber and additive-protection mechanism. The datasheet marked ©2022 describes the copper-plating system and modular configurations.
Scope and limitations Uniform deposition does not guarantee elimination of shorts; resist openings, seed and pattern density remain relevant. Savings claims are not project guarantees. What to prepare BLNKK suggests RDL/resist patterns, seed, current/bath settings and thickness, bridge and wafer maps. Confirm with the supplier Confirm current/flow windows, additive monitoring and maintenance, and sample-level uniformity/short assessment.
Full assessment recordExpand for all conditions, path rules and original assessment notes.
Current assessment and next steps
Based on reported conditions and public sources. Ready to assess does not establish sample applicability or root cause. Order does not identify the best solution.
Known conditions · 0
Key unknowns · 5
- Are pre-assembly / pre-stress shorts localized between adjacent RDL lines?Record first-test timing, nets, and image coordinates. Leakage or high via resistance alone does not establish interline shorts.
- Are same-space resist openings / profiles retained after development and before plating?Compare identical layouts and abnormal / normal locations. Endpoint bridges cannot establish upstream exposure errors.
- Are metal profiles registerable after plating / resist stripping and before seed removal?Retain thickness, sidewalls, and interline morphology. Post-etch images alone cannot assign all morphology to plating.
- Can post-seed / barrier-removal residues be registered to conductive shorts?Pair SEM with electrical and necessary composition checks. Optical contrast does not directly prove conductive material.
- Are line density, seed / barrier, plating, and etch histories comparable within the batch?Track removal and sidewall loss together. Do not enter universal overetch or current-density values.
Paths to assess
Developed openings and line-profile controls
Complete first-short localization and developed images first.
- Are pre-assembly / pre-stress shorts localized between adjacent RDL lines?
- Are same-space resist openings / profiles retained after development and before plating?
Conditions that change this path
- Are pre-assembly / pre-stress shorts localized between adjacent RDL lines?Supports assessment: Initial interline short located · Unsuitable for now: Other electrical path located
- Are same-space resist openings / profiles retained after development and before plating?Supports assessment: Post-development profiles registerable · Unsuitable for now: No upstream resist evidence
Plated-metal morphology controls
Complete plating-stage registration and comparable histories first.
- Are pre-assembly / pre-stress shorts localized between adjacent RDL lines?
- Are same-space resist openings / profiles retained after development and before plating?
- Are metal profiles registerable after plating / resist stripping and before seed removal?
- Are line density, seed / barrier, plating, and etch histories comparable within the batch?
Conditions that change this path
- Are pre-assembly / pre-stress shorts localized between adjacent RDL lines?Supports assessment: Initial interline short located · Unsuitable for now: Other electrical path located
- Are same-space resist openings / profiles retained after development and before plating?Supports assessment: Post-development profiles registerable · Unsuitable for now: No upstream resist evidence
- Are metal profiles registerable after plating / resist stripping and before seed removal?Supports assessment: Post-strip metal profiles registerable · Unsuitable for now: Only post-seed-removal endpoint images
- Are line density, seed / barrier, plating, and etch histories comparable within the batch?Supports assessment: Comparable structures and process histories · Unsuitable for now: Mixed structures / process histories
Seed / barrier residue and line-loss controls
Complete residue / electrical registration, upstream profiles, and histories first.
- Are pre-assembly / pre-stress shorts localized between adjacent RDL lines?
- Are metal profiles registerable after plating / resist stripping and before seed removal?
- Can post-seed / barrier-removal residues be registered to conductive shorts?
- Are line density, seed / barrier, plating, and etch histories comparable within the batch?
Conditions that change this path
- Are pre-assembly / pre-stress shorts localized between adjacent RDL lines?Supports assessment: Initial interline short located · Unsuitable for now: Other electrical path located
- Are metal profiles registerable after plating / resist stripping and before seed removal?Supports assessment: Post-strip metal profiles registerable · Unsuitable for now: Only post-seed-removal endpoint images
- Can post-seed / barrier-removal residues be registered to conductive shorts?Supports assessment: Residues and electrical data registerable · Unsuitable for now: Only images without electrical pairing
- Are line density, seed / barrier, plating, and etch histories comparable within the batch?Supports assessment: Comparable structures and process histories · Unsuitable for now: Mixed structures / process histories
What to do next
No result provided. Clarify key conditions before arranging an assessment.
- Are pre-assembly / pre-stress shorts localized between adjacent RDL lines?
What to prepare
- Initial interline electrical locations; same-coordinate post-development images; identical abnormal / normal layouts
- Shorted nets and image coordinates; corresponding staged samples; structural and electrical-measurement limits
- Registered development / plating / seed-removal stages; short-to-residue registration; same-layout process histories
- THB-111N is listed for copper-plated RDL in WLCSP/SiP, with a model-specific 5–15 µm thickness range.
- Listed photochemical/PI feeds assessed against part number, chemistry, temperature and pressure windows.
- SUSS identifies 100–200 mm wafers, RDL and thick-film packaging; material and handling compatibility depend on configuration.
- ClassOne lists WLP and flip chip; chemistry selection depends on the metal stack, dimensions and selectivity.
- YES identifies wafer/panel processing, Cu/Ti/TiW/Ru and seed etch; actual stacks and formats need confirmation.
- Photoresist coatings and patterns need validated sensors/recipes for their optical properties and geometry.
- Consider compatible substrate, interposer and glass-core processes with stack-specific validation.
- Use optically modelable films; validate wavelengths, thickness coverage and measurement locations for the selected configuration and stack.
- Evaluate Cu redistribution seed etching with stack-specific thickness, linewidth, Ti barrier and bath conditions.
- Suitable for located surfaces or prepared cross-sections; assess insulators, charging and vacuum compatibility.
- Assess the actual metal stack, dielectric compatibility and layout using the proposed chemistry and representative samples.
- Consider visible-pattern or post-lithography review, with feature size, contrast and sampling confirmed.
- Consider nonplanar coating trials, with materials, geometry and downstream lithography confirmed separately.
- Assess the actual RDL resist, metal stack, line/space targets and rinsing workflow.
- Canon positions it for large-panel PLP exposure: 515 × 510 mm is the de facto size and the table lists a 515 × 515 mm maximum. Resist, pattern and panel geometry need process-window confirmation. Provide panel shape, resist, line/space targets, focus/exposure and developed-pattern inspection.
- For through-resist copper RDL in WLP and 2.5D/3D interconnects, with chemistry/equipment selected for the process. Provide seed, openings, pattern density, bath/current recipe and staged morphology.
Questions to discuss
- Can initial shorted nets be registered to adjacent-line spaces?
- Are development, plating / stripping, and seed-removal stages registered?
- How are residues and electrical data confirmed while line loss is measured together?
Public references
Applied Materials authors / IMAPSource · Enabling a Robust Copper Seed Etch Process for Fine Line RDL by Electroplating on a Thin PVD Seed Layer ↗A specific 2018 test wafer. Seed thickness, overetch, and line-width acceptance do not transfer to other structures.
ASE · Failure Analysis Lab ↗The service list does not guarantee detection rates at every RDL or microvia scale; sampling, structures, and destructive risks require confirmation.
JSR · THB-111N negative-tone resist for copper RDL plating ↗Scope and limitations This is not a permanent dielectric or a short-free guarantee. The family 5–90 µm range and other grades’ bumping applications do not apply to THB-111N. What to prepare BLNKK suggests preparing thickness, linewidth/spacing, exposure and development settings, scum images, seed-layer details, plating chemistry and stripping results. Confirm with the supplier Confirm process windows, bath and substrate compatibility, opening profiles and stripping conditions; discuss how to distinguish resist residue from other short mechanisms.
Entegris · Impact HV point-of-use high-viscosity photochemical filter ↗Scope and limitations The retention rating does not guarantee removal of all nanoscale particles or bubble-free delivery. Use with underfill or EMC containing functional fillers is not documented and needs assessment of formulation changes. What to prepare BLNKK suggests documenting chemistry, viscosity, feed/filter-change histories, pressure drop, particles/bubbles, formulation changes and coating defects. Confirm with the supplier Confirm parts, compatibility, commissioning/changeout and retention/additive-preservation evidence at the actual flow, temperature and pressure.
SUSS MicroTec · ACS200 Gen3 RDL resist coating/development ↗Scope and limitations Uniform coating does not prove short-free RDL. Thin, warped or stacked wafers need handling verification. What to prepare BLNKK suggests preparing material grades, viscosity, topography, target thickness and exposure conditions, alongside opening and residue measurements. Confirm with the supplier Confirm dispense, developer, drying and handling modules, plus sample-specific acceptance criteria for thickness uniformity, openings and residues.
ClassOne Technology · Solstice Wet Etch UBM/seed-metal isolation ↗Scope and limitations Published examples do not guarantee zero undercut or repair every short. Film removal and preservation of circuit dimensions both require validation. What to prepare BLNKK suggests preparing seed/barrier layers, thickness, linewidth/spacing, residue locations, available chemistries, and before/after topography and electrical results. Confirm with the supplier Confirm selectivity, endpoints and lateral-etch windows, then discuss residue criteria, dimensional loss and post-clean electrical-isolation tests.
Yield Engineering Systems · TersOnus RDL seed-metal wet etch ↗Scope and limitations No target-stack selectivity or undercut result is published. Seed removal does not establish that plated bridges or other short mechanisms are resolved. What to prepare BLNKK suggests preparing film stacks, thickness, line/space dimensions and residue maps, plus permitted line loss and isolation acceptance criteria. Confirm with the supplier Confirm chemistry, uniformity, undercut/selectivity, wafer/panel handling and post-clean residue/electrical verification.
Camtek · MicroProf AP photoresist thickness and profile comparison ↗Scope and limitations Capability depends on sensors, optical models and patterns. Photoresist profiles alone do not establish electrical shorts or plating/seed-removal root causes. What to prepare BLNKK suggests preparing resist material, thickness/pattern dimensions, wafer sampling locations, process history and reference cross-sections or electrical results. Confirm with the supplier Confirm sensors, recipes, optical parameters and calibration; discuss repeatability at pattern edges, thickness variations and automated sampling locations.
Asahi Kasei · Asahi Kasei SUNFORT TA fine-pattern dry film resist ↗Scope and limitations Resist resolution does not establish finished-circuit yield or repair existing metal shorts. What to prepare BLNKK suggests preparing target line/space, stackup, surface condition, film-thickness needs and current exposure/development steps. Confirm with the supplier Confirm grades, lamination/exposure/development windows and compatibility with plating, stripping and adjacent materials.
Filmetrics · Filmetrics F20 resist and dielectric thickness comparison ↗Scope and limitations Coverage depends on configuration and stack. Do not borrow small-spot or automated-mapping specifications from other models; thickness results do not directly identify RDL shorts. What to prepare BLNKK suggests preparing materials, layer order, nominal thicknesses, optical constants, accessible measurement areas and reference thickness data. Confirm with the supplier Confirm wavelengths, spot/fixture, model parameters and standards; discuss fit quality, repeatability and configuration using actual stacks.
Nagase ChemteX · Nagase ChemteX N-CE1 copper seed etchant ↗Scope and limitations Published rates/selectivity do not guarantee every stack, zero CD loss or undercut. Seed removal does not establish repair of thick plated bridges. What to prepare BLNKK suggests thickness, geometry, barrier and process/rinse records, with residue, linewidth, undercut and electrical comparisons. Confirm with the supplier Confirm stack-specific window, bath loading/life, barrier effects and rinse requirements, with geometry/electrical sample trials.
Eurofins EAG Laboratories · EAG Auger seed/barrier residue analysis ↗Scope and limitations Chemical-state information is limited and insulators are difficult. Buried regions need preparation; detected metal alone does not prove a conductive bridge. What to prepare BLNKK suggests preparing shorted-net coordinates, images, stack/process records, matched controls and preparation history. Confirm with the supplier Confirm accessible targets, charging/sputtering treatment, quantitative references and correlation with electrical results.
siconnex customized solutions GmbH · BATCHSPRAY Acid RDL seed / barrier wet etch ↗Scope and limitations Uniformity and endpoint sensing do not independently establish line isolation or eliminate undercut. Family-level performance figures are not universal specifications for this configuration. What to prepare BLNKK suggests preparing stack thicknesses, line/space dimensions, dielectrics and current etch history. Residue images, dimensional loss and short locations can guide matched comparisons. Confirm with the supplier Confirm chemistry, selectivity, endpoint interpretation, recirculation management and over-etch control. Agree on sample checks for remaining metal, line loss and electrical isolation.
Unity Semiconductor · Wotan visible-pattern dual-sided AOI review ↗Scope and limitations An apparent bridge does not prove an electrical short; surface images do not reveal buried lines. The page gives no resolution qualification for the actual RDL. What to prepare BLNKK suggests preparing line/space, surface details, process images and electrical locations, with comparable normal/abnormal samples. Confirm with the supplier Confirm optical configuration, visibility, classification and feature recognition, plus image-to-electrical correlation.
SCREEN Semiconductor Solutions · SC-80EX stepped / through-hole substrate spray coating ↗Scope and limitations Coating capability does not qualify fine-line RDL lithography, every hole geometry or electrical isolation. What to prepare BLNKK suggests preparing viscosity, target thickness, geometry and exposure needs, with coverage and post-development residue observations. Confirm with the supplier Confirm substrate/material compatibility, configuration and a trial window, including uniformity, residue and subsequent electrical checks.
Nippon Kayaku Co., Ltd. · Nippon Kayaku NK disperse UT developer ↗Scope and limitations Al/Cu applicability does not guarantee whole-stack corrosion immunity or scum-free openings. Developer cannot repair plated bridges; other cleaners’ conditions do not transfer. What to prepare BLNKK suggests preparing resist/thickness, exposure, stack and layout details. Record concentration, time, temperature and rinsing; retain matched images before/after plating. Confirm with the supplier Confirm grade/resist/metal compatibility and development/rinse windows. Agree on checks for scum, line shape, corrosion and subsequent plating/electrical results.
Canon Semiconductor Equipment · FPA-8000iW panel packaging lithography ↗Scope and limitations Resolution/overlay ratings are not automatically the achieved resist linewidth, spacing or defect-free interconnects. Warpage shape, resist and alignment marks affect acceptance; the 10 mm handling description is not a guarantee for arbitrary panel profiles. What to prepare BLNKK suggests preparing panel material, size/thickness and warpage profiles, resist/exposure conditions, linewidth/spacing targets and overlay budgets, plus short locations, pattern measurements and handling failures. Confirm with the supplier Confirm field choice, resolution/overlay acceptance conditions, resist/focus window, supported panels for Vacuum Assist, and limits on warped-panel handling and exposure.
ClassOne Technology · Solstice CopperMax copper RDL plating ↗Scope and limitations Uniform deposition does not guarantee elimination of shorts; resist openings, seed and pattern density remain relevant. Savings claims are not project guarantees. What to prepare BLNKK suggests RDL/resist patterns, seed, current/bath settings and thickness, bridge and wafer maps. Confirm with the supplier Confirm current/flow windows, additive monitoring and maintenance, and sample-level uniformity/short assessment.