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(Not Translated)
| 5F241 | LED DEVICES (OTHER THAN PACKAGES) | |
| H01L33/00 ;33/00@J-33/00@K;33/00@Z-33/46 | ||
| H01L33/00;33/00@J-33/00@K;33/00@Z-33/46 | AA | AA00 PURPOSES |
AA01 | AA02 | AA03 | AA04 | AA05 | AA06 | AA07 | AA08 | AA09 | AA10 |
| . Optical | . . Enhancement of fast action or transient response characteristics | . . Enhancement of light emission efficiency | . . Increasing light output | . . Uniform distribution of emission intensity | . . Preventing light diffusion, improving directivity, light focusing | . . Light diffusion | . . Improvement of current-light output characteristics | . . Stabilization of light output | . . Correction of luminance | |||
| AA11 | AA12 | AA13 | AA14 | |||||||||
| . . Improvement of emission colors or wavelengths * | . . Obtaining multiple emission colors or wavelengths | . . Control of laser oscillation | . . Others * | |||||||||
| AA21 | AA22 | AA23 | AA24 | AA25 | ||||||||
| . Electric * | . . Increasing current density | . . Overcurrent protection | . . Reducing power consumption | . . Prevention of disconnection or contact | ||||||||
| AA31 | AA32 | AA33 | AA34 | AA35 | AA36 | AA40 | ||||||
| . Others * | . . Temperature compensation | . . Heat radiation or cooling | . . Improving moisture resistance | . . Positioning | . . . Positioning during the chip manufacturing process | . . Elimination of stress or distortion | ||||||
| AA41 | AA42 | AA43 | AA44 | AA45 | AA46 | AA47 | ||||||
| . . Improvement of yields | . . Reducing the number of part items or processes | . . Increasing reliability | . . Prevention of deterioration | . . Marking (indicating polarity, emission colors or the like) | . . Testing or measuring * | . . Miniaturization | ||||||
| BB | BB00 LED DRIVE CIRCUITS (1) |
BB01 | BB02 | BB04 | BB05 | BB07 | BB10 | |||||
| . Drive systems | . . Driven with constant current or voltage | . . Driven with AC waveforms | . . Driven with pulsating waveforms | . . Driven with pulses (intermittent) | . . Others * | |||||||
| BB11 | BB12 | BB14 | BB16 | BB18 | BB20 | |||||||
| . Connection of LEDs | . . Series connection | . . Parallel connection | . . Series-parallel connection | . . Matrix connection | . . Other connections * | |||||||
| BB22 | BB24 | |||||||||||
| . . With bypasses | . . Variable connection | |||||||||||
| BB32 | BB33 | BB34 | ||||||||||
| . . Combination of LEDs with different characteristics | . . . Use of LEDs with different characteristics within the LED line | . . . Different characteristics between LED lines | ||||||||||
| BB41 | BB42 | |||||||||||
| . Control between multiple LED lines | . . Control of each LED line | |||||||||||
| BC | BC00 LED DRIVE CIRCUITS (2) |
BC01 | BC02 | BC03 | BC04 | BC05 | BC06 | BC07 | BC08 | BC09 | BC10 | |
| . Type of circuits | . . Amplifying circuits | . . Switching circuits | . . Current limiting circuits | . . . Use of a single device | . . . Use of multiple devices (including constant current circuits) | . . Current divider circuits | . . Differentiating or integrating circuits (including smoothing circuits) | . . Rectifying circuits | . . Feedback circuits | |||
| BC12 | BC13 | BC14 | BC15 | BC16 | BC17 | BC18 | BC19 | BC20 | ||||
| . . Transformer circuits | . . . Booster circuits | . . . Step-down circuits | . . Phase control circuits | . . Current mirror circuits | . . Comparing circuits (e.g. comparators) | . . Digital circuits | . . Dummy circuits | . . Compensating circuits | ||||
| BC22 | BC23 | BC24 | BC26 | BC27 | ||||||||
| . . Power circuits | . . . AC power supplies | . . DC power supplies | . . Storage circuits | . . . Reference data for control | ||||||||
| BC32 | BC33 | BC34 | BC35 | BC36 | BC40 | |||||||
| . . Detection circuits | . . . Current detection circuits | . . . Voltage detection circuits | . . . Photodetector circuits | . . . Temperature detection circuits | . . Others * | |||||||
| BC41 | BC42 | BC43 | BC44 | BC46 | BC47 | BC50 | ||||||
| . Circuit components | . . R (resistance) | . . L (inductance) | . . C (capacitor) | . . Diodes | . . Transistors | . . Others * | ||||||
| BD | BD00 FUNCTIONS OF LED DRIVE CIRCUITS |
BD01 | BD02 | BD03 | BD04 | BD05 | BD06 | BD07 | BD08 | BD09 | BD10 | |
| . Control parameters | . . Currents | . . Voltages | . . LED luminance, luminous quantity, or brightness | . . Ambient light (ambient brightness) | . . Temperature | . . Wavelengths, color temperatures, or color coordinates | . . Time (e.g. drive time) | . . External signals (e.g. dimming signals) | . . Others * | |||
| BD11 | BD12 | BD13 | BD14 | |||||||||
| . Control of transient characteristics | . Control of power on | . . Control of turning on (rise) | . . Control of turning off (fall) | |||||||||
| BD21 | BD22 | BD23 | ||||||||||
| . Detecting and dealing with abnormalities | . . Protecting LEDs | . . Protecting arrangements other than LEDs | ||||||||||
| BD32 | BD33 | BD34 | BD35 | |||||||||
| . . Detecting abnormality of LED | . . . Identifying failure modes | . . . . Detecting short circuits | . . . . Detecting open states | |||||||||
| BD42 | ||||||||||||
| . . Detecting abnormalities of arrangements other than LEDs | ||||||||||||
| BD52 | BD54 | |||||||||||
| . . Continuing drive in the event of abnormality | . . Stopping drive in the event of abnormality | |||||||||||
| CA | CA00 LED TYPES (1) |
CA01 | CA02 | CA03 | CA04 | CA05 | CA06 | CA07 | CA08 | CA10 | ||
| . Junction structures | . . Homo | . . Hetero | . . . Double hetero | . . Superlattices (including quantum walls) | . . MIS type or MES type | . . PNPN (thyristor structure) | . . Other junction structures * | . Characterized by the shape of a mating face | ||||
| CA11 | CA12 | CA13 | CA14 | |||||||||
| . Direction of emission | . . Surface emission | . . . Back face emission | . . End face emission | |||||||||
| CA21 | CA22 | CA23 | CA24 | CA25 | ||||||||
| . Crystal structures | . . Monocrystal | . . . Plane orientation or direction of crystal axis * | . . Polycrystal * | . . Amorphous * | ||||||||
| CA31 | CA32 | CA33 | CA34 | CA35 | CA36 | CA37 | CA38 | CA39 | CA40 | |||
| . LED materials | . . Parent materials | . . . IV group * | . . . III-V groups * | . . . . GaAs | . . . . GaAlAs | . . . . GaP | . . . . GaAsP | . . . . InGaAsP | . . . . GaN | |||
| CA41 | CA42 | CA43 | CA44 | CA45 | CA46 | CA47 | CA48 | CA49 | CA50 | |||
| . . . II-VI groups * | . . . . ZnS | . . . . ZnSe | . . . . ZnSSe | . . Organic semiconductors * | . . . Others * | . . Additives | . . . Functions of additives * | . . . . Conductivity type | . . . . Emission center | |||
| CA51 | CA52 | CA53 | CA54 | CA55 | CA56 | CA57 | CA58 | CA60 | ||||
| . . . . Insulating or semi-insulating | . . . Additive materials | . . . . Zn | . . . . O | . . . . N | . . . . S | . . . . Others * | . . . Characterized by concentration distributions of additives | . . Having inclined bandgap layers | ||||
| CA61 | CA62 | CA63 | CA64 | CA65 | CA66 | CA67 | ||||||
| . Manufacturing methods | . . Parent growth | . . . Liquid phase growth | . . . Vapor phase growth | . . . MOCVD | . . . MBE | . . . Others * | ||||||
| CA71 | CA72 | CA73 | CA74 | CA75 | CA76 | CA77 | ||||||
| . . Ion implantation | . . Diffusion | . . Heat treatment | . . Etching | . . Groove formation | . . Dicing or scribing | . . Others * | ||||||
| CA81 | CA82 | CA83 | CA84 | CA85 | CA86 | CA87 | CA88 | |||||
| . Electrodes | . . Electrode materials * | . . . Single metals * | . . . Alloys * | . . . . Au type | . . . . Ag type | . . . . Al type | . . . Light-transmissive | |||||
| CA91 | CA92 | CA93 | CA94 | CA98 | CA99 | |||||||
| . . Electrode structures | . . . Multi-layered electrodes | . . . Characterized by electrode configurations | . . . Doubling as a light-blocking film | . . Methods of manufacturing electrodes | . . . Special treatments of semiconductor layers | |||||||
| CB | CB00 LED TYPES (2) |
CB01 | CB02 | CB03 | CB04 | CB05 | CB06 | |||||
| . Device structures | . . Current constricting structures | . . . Potential barriers (PN junctions) | . . . Insulators | . . . Mesa type | . . . Concentration of impurities | |||||||
| CB11 | CB12 | CB13 | CB14 | CB15 | CB16 | |||||||
| . . Mesa-shaped | . . Ballast-shaped | . . Thin-film shaped | . . With lenses | . . With a reflecting surface | . . With light blocking members | |||||||
| CB21 | CB22 | CB23 | CB24 | CB25 | CB27 | CB28 | CB29 | |||||
| . . Monolithic | . . . LED monolithic arrays | . . . . Insulation separation | . . . . PN separation | . . . . Separation by grooves (air) | . . . Monolithic multi-color LED | . . . . Serial | . . . . Parallel | |||||
| CB31 | CB32 | CB33 | CB36 | |||||||||
| . . . Composite devices * | . . . . Coupling with other optical semiconductors * | . . . . Coupling with transistors or diodes | . . Others * | |||||||||
| FF | FF00 APPLICATIONS |
FF01 | FF02 | FF03 | FF04 | FF05 | FF06 | |||||
| . Display | . . Displaying of dots | . . Displaying of lines | . . Displaying of characters or symbols | . . . 7 segment | . . . Matrix | |||||||
| FF11 | FF12 | FF13 | FF14 | FF15 | FF16 | |||||||
| . Illumination | . Decoration | . Printers or copiers | . Optical communications | . Optical excitation (e.g. lasers) | . Others * |