LTPO transistor backplane
Pattern a hybrid LTPS/oxide6T2C LTPO pixel/GOA array on one process glass with banks and final COG/FOG pad interfaces; independently test the bare array. Source-checked architectural correction; critical whole-node chemistry/interface research remains unresolved.
Discovered · unresearchedClosure: OpenInventory incomplete
Capability requirements and tolerances
Consumer-specific numerical targets, quantities and acceptance limits remain open or incompletely reviewed. No smartphone-grade suitability is claimed. Distinct capability tiers require their own making route and qualification.
Making steps · draft selected for navigation; not a validated fabrication specification.
Known Parts and Tools
The selected route supplies this page's inventory and the map's dependency links from one record. Further requirements may be missing; review flags do not prove physical suitability.
| Requirement | Role | Use | Relationship status |
|---|---|---|---|
| Display substrate | Part | incorporated once into moving bare backplane | Cycle-checked; compatibility unknown |
| Interconnect deposition stock | Part | consumed feedstock | Cycle-checked; compatibility unknown |
| Backplane dielectric stock | Part | consumed feedstock | Cycle-checked; compatibility unknown |
| Oxide TFT target stock | Part | consumed feedstock | Cycle-checked; compatibility unknown |
| Deposition equipment | Tool | reused | Cycle-checked; compatibility unknown |
| Exposure equipment | Tool | reused | Cycle-checked; compatibility unknown |
| Etching equipment | Tool | reused | Cycle-checked; compatibility unknown |
| Mask making equipment | Tool | reused | Cycle-checked; compatibility unknown |
| Heat treatment equipment | Tool | reused | Cycle-checked; compatibility unknown |
| Vacuum systems | Tool | reused | Cycle-checked; compatibility unknown |
| Gas handling | Tool | reused | Cycle-checked; compatibility unknown |
| Photoresist | Part | consumed | Cycle-checked; compatibility unknown |
| Photoresist developer | Part | consumed | Cycle-checked; compatibility unknown |
| Backplane test structures | Part | consumed verification | Cycle-checked; compatibility unknown |
| Electrical instruments | Tool | verification | Cycle-checked; compatibility unknown |
| Optical instruments | Tool | verification | Cycle-checked; compatibility unknown |
| Cleanroom | Tool | reused | Cycle-checked; compatibility unknown |
| Cleaning equipment | Tool | reused; reused | Cycle-checked; compatibility unknown |
| Regulated power | Tool | reused | Cycle-checked; compatibility unknown |
| Cooling systems | Tool | reused | Cycle-checked; compatibility unknown |
| Ventilation | Tool | reused; reused | Cycle-checked; compatibility unknown |
| Chemical protection equipment | Tool | reused; reused | Cycle-checked; compatibility unknown |
| Chemical effluent collection equipment | Tool | reused; reused | Cycle-checked; compatibility unknown |
| Display LTPS source charge | Part | consumed deposited feed | Cycle-checked; compatibility unknown |
| Display LTPS crystallization module | Tool | reused | Cycle-checked; compatibility unknown |
| Display pixel planarization and bank charge | Part | consumed deposited feed | Cycle-checked; compatibility unknown |
| Display interface and drive test fixture | Tool | verification | Cycle-checked; compatibility unknown |
| Display film thickness test fixture | Tool | verification | Cycle-checked; compatibility unknown |
| Display panel holder | Part | reused | Cycle-checked; compatibility unknown |
| Process controller | Tool | reused | Cycle-checked; compatibility unknown |
| Workshop computer | Tool | reused physical host | Cycle-checked; compatibility unknown |
| Programming cable | Part | reused | Cycle-checked; compatibility unknown |
| Distribution cable | Part | reused | Cycle-checked; compatibility unknown |
| Display process cleaning charge | Part | consumed commissioning and operation | Cycle-checked; compatibility unknown |
| Clean handling carrier | Part | reused | Cycle-checked; compatibility unknown |
| Dry storage cover | Tool | reused | Cycle-checked; compatibility unknown |
| Workshop surfaces | Tool | reused | Cycle-checked; compatibility unknown |
| Containers | Tool | reused | Cycle-checked; compatibility unknown |
Unselected candidate inventories · 1
These records expose known requirements and alternative or blocked hypotheses. They add no manufacturing links or selected discovery depth.
Deposit and pattern bottom-gate oxide TFT array on glass with passivation, storage capacitors and row/column driver interfaces
Method remains open.
- Display substrate · part
- Interconnect deposition stock · part
- Backplane dielectric stock · part
- Oxide TFT target stock · part
- Display gate and source driver set · part
- Flexible interconnect · part
- Deposition equipment · tool
- Exposure equipment · tool
- Etching equipment · tool
- Mask making equipment · tool
- Heat treatment equipment · tool
- Vacuum systems · tool
- Gas handling · tool
- Photoresist · part
- Photoresist developer · part
- Backplane test structures · part
- Electrical instruments · tool
- Optical instruments · tool
- Cleanroom · tool
- Cleaning equipment · tool
- Regulated power · tool
- Cooling systems · tool
- Ventilation · tool
- Chemical protection equipment · tool
- Chemical effluent collection equipment · tool
Memory-first hypothesis; inventory and compatibility unreviewed.
Making outline
- Pattern a hybrid LTPS/oxide6T2C LTPO pixel/GOA array on one process glass with banks and final COG/FOG pad interfaces; independently test the bare array.
- One base glass travelsS0->S1->S2->S3->S4; second prefrittedlidL0 separate. Track actual source, installed pattern, transfer, calibration, controls and initial/recurring witness/service charges.
- No full research completion or physical/final material acceptance while B01-B03 remain.
What remains unresolved
- B01: Fully named matched RGB transport/emitter/electrode/capping recipe and exact life/gamut/power grade unresolved after checked alternatives.
- B02: Actual paired LTPO pixel/bank/mask CAD, DSC/PPS/driver rails/pads and compensation timing contract remain unresolved.
- B03: Scope-specific material/process windows and independent calibration guardbands require B01/B02 and representative trials.
Sources and leads
Source scope and research notes determine which claims have been checked. A URL does not establish a complete making route.
- https://global.samsungdisplay.com/30929
- https://global.samsungdisplay.com/29626/
- https://global.samsungdisplay.com/29678?category=78&page=7&type=list
- https://doi.org/10.1080/15980316.2023.2213848
- https://pmc.ncbi.nlm.nih.gov/articles/PMC9506124/
- https://www1.eere.energy.gov/buildings/publications/pdfs/ssl/taylor_encapsulation_tampa2014.pdf
- https://patents.google.com/patent/US20110223371A1/en
- https://data.epo.org/publication-server/rest/v1.0/publication-dates/20150304/patents/EP1831938NWB1/document.pdf
- https://www.global.dnp/en/news/detail/2024/06/0612_20175265/
- https://tc-kyoto.or.jp/outcome/outcome-6667/
- https://link.springer.com/article/10.1186/s40486-019-0081-x
- https://www.dexerials.jp/en/rd/tech/tech02.html
- https://www.dexerials.jp/en/products/acf/a7_comp1.html
- https://www.nist.gov/publications/nist-measurement-services-photometric-calibrations
- https://www.nist.gov/pml/sensor-science/optical-radiation/realization-related-photometric-units
- https://store.astm.org/standards/f1249
- https://displayhdr.org/performance-criteria/
- https://www.sid.org/Standards/ICDM
- https://www.nature.com/articles/s41566-021-00763-5
- https://pmc.ncbi.nlm.nih.gov/articles/PMC11653681/
- https://doi.org/10.1016/j.displa.2026.103345
- https://www.mipi.org/specifications/dsi
- https://www.corning.com/media/worldwide/cdt/documents/EAGLE_XG_Glass_PI_Sheet.pdf
- https://media.springernature.com/original/springer-static/esm/art:10.1038%2Fs41566-021-00763-5/MediaObjects/41566_2021_763_MOESM1_ESM.pdf
- https://sid.org/Portals/sid/Files/SID-Digest/docs/P-194.pdf
- https://sid.org/Portals/sid/Files/SID-Digest/docs/55-1.pdf
- https://github.com/vesa-org/DisplayHDRTest-v1.2
- https://www.sid.org/Portals/sid/Files/ICDM/idms1p3_toc.html
- https://www.idemitsu.com/jp/news/2025/250519_en.pdf
Proposed capability specification
{
"function": "Pattern a hybrid LTPS/oxide6T2C LTPO pixel/GOA array on one process glass with banks and final COG/FOG pad interfaces; independently test the bare array.",
"quantity": "One physical intermediate per attempted panel plus separately ledgered commissioning, reject, destructive, calibration and aging stock; final module count1.",
"consumer_panel_contract": {
"diagonal_mm": 157.48,
"active_width_mm": 65.9932817866759,
"active_height_mm": 142.9854438711311,
"pixels": [
1080,
2340
],
"logical_pixels": 2527200,
"RGB_stripe_subpixels": 7581600,
"pixel_pitch_um": 61.104890543218424,
"RGB_stripe_horizontal_cell_um": 20.368296847739476,
"refresh_modes_Hz": [
1,
60,
120
],
"RGB888_active_payload_bits_per_s": 7278336000,
"source_lane_design": "4×2.5Gb/s candidate; timing/overhead/range not yet final",
"module_budget_mm": [
76,
156,
2.5
],
"hole": "none; top-bezel camera",
"touch": "separate laminated capacitive panel",
"HDR_input": "10bpc RGB input; DSC1.2 at10bits/pixel (3:1), two540-pixel slices of20rows; fourD-PHY2.5Gb/sdata lanes",
"DSC_slices": {
"horizontal": 2,
"width_px": 540,
"height_rows": 20,
"vertical_groups": 117
},
"compressed_active_payload_bits_per_s": 3032640000,
"PHY": "fourD-PHY2.5Gb/sdata lanes plus differentialclock;actualPPS/timing/pinassignmentpendingcentralcontract",
"peak": "Project2600cd/m2 at CTS1.2 8% center white plus2%APL background; explicitly no Samsung measurement transfer",
"sustained": "Project >=600cd/m2 full-screen D65 for30min at25C and120Hz",
"color": "Project100%sRGB and>=95%P3-D65 area coverage, meanDeltaE2000<=3; intersection coverage and exact patches proposed",
"power": "Project panel and driver<=4W full-screen600nit120Hz,<=8W transient peak",
"temperature": "Project panel operating surface<=45C at25C ambient",
"lifetime": "Project LT95>=3000h at200nit full-screenD65,60Hz,25C, directly measured dedicated stock, no unsupported acceleration",
"supply_interface": "Project 5.0V +/-5%, maximum2A; all internal rail generation is physical panel module hardware and included in4W/8W budgets"
},
"critical_immediate_blocks": [
"B01: Fully named matched RGB transport/emitter/electrode/capping recipe and exact life/gamut/power grade unresolved after checked alternatives.",
"B02: Actual paired LTPO pixel/bank/mask CAD, DSC/PPS/driver rails/pads and compensation timing contract remain unresolved.",
"B03: Scope-specific material/process windows and independent calibration guardbands require B01/B02 and representative trials."
],
"independent_acceptance": "Actual spectral/angular/DSC/film/package/all-rail thermal tests with independent references; no generic microscope/meter equivalence."
}Earlier research provenance
- Section05 sourcev1; original source53/review84 evidence preserved, architecture correction not full research completion.
Used by
Items that directly require this item in their selected inventory.
Paths from Smartphone
These routes together include every item that can lead from Smartphone to this item. Repeated path combinations are collapsed; recipes are omitted.
Shortest route: Smartphone → Display panel → Display encapsulated intermediate → OLED-coated backplane → LTPO transistor backplane
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