Cambridge Display Technology Limited
339Patents
212Active
339Granted
52Portfolio score
Filing activity: Aug 22, 1991 → Nov 21, 2017 · 103 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5399502A | Method of manufacturing of electrolumineschent devices | Electricity | 614 | Expired |
| US5821690A | Electroluminescent devices having a light-emitting layer | Electricity | 182 | Expired |
| US5653914A | Electroluminescent device comprising a chromophoric polymeric composition | Chemistry; Metallurgy | 169 | Expired |
| US5672678A | Semiconductive copolymers for use in luminescent devices | Emerging Cross-Sectional Technologies | 139 | Expired |
| US5401827A | Semiconductive copolymers for use in luminescent devices | Emerging Cross-Sectional Technologies | 139 | Expired |
| US7800558B2 | Display driver circuits for electroluminescent displays, using constant current generators | Physics | 129 | Expired |
| US5512654A | Semiconductive copolymers for use in luminescent devices | Emerging Cross-Sectional Technologies | 117 | Expired |
| US6828724B2 | Light-emitting devices | Electricity | 112 | Expired |
| US6429601B1 | Electroluminescent devices | Electricity | 110 | Expired |
| US5328809A | Patterning of semiconductive polymers | Emerging Cross-Sectional Technologies | 110 | Expired |
| US6518700B1 | Organic light-emitting devices | Electricity | 105 | Expired |
| US6340789B1 | Multilayer photovoltaic or photoconductive devices | Emerging Cross-Sectional Technologies | 101 | Expired |
| US6603139B1 | Polymer devices | Emerging Cross-Sectional Technologies | 81 | Expired |
| US5747182A | Manufacture of electroluminescent devices | Emerging Cross-Sectional Technologies | 78 | Expired |
| US6639250B1 | Multiple-wavelength light emitting device and electronic apparatus | Electricity | 76 | Expired |
| US6111560A | Display with a light modulator and a light source | Physics | 74 | Expired |
| US6592969B1 | Flexible substrates for organic devices | Emerging Cross-Sectional Technologies | 65 | Expired |
| US7456812B2 | Display driver circuits | Physics | 56 | Expired |
| US6580212B2 | Display device with improved contrast | Electricity | 56 | Expired |
| US6498049B1 | Display devices | Electricity | 53 | Expired |
| US5523555A | Photodetector device having a semiconductive conjugated polymer | Emerging Cross-Sectional Technologies | 50 | Expired |
| US5929562A | Organic light-emitting devices | Emerging Cross-Sectional Technologies | 46 | Expired |
| US7537947B2 | Optoelectronic displays | Electricity | 45 | Expired |
| US5698048A | Photoresponsive materials | Emerging Cross-Sectional Technologies | 43 | Expired |
| US6255774A | Multilayer cathode for organic light-emitting device | Electricity | 43 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.