WO2001057936A1 - Matrice d'elements electroluminescents - Google Patents
Matrice d'elements electroluminescents Download PDFInfo
- Publication number
- WO2001057936A1 WO2001057936A1 PCT/JP2001/000074 JP0100074W WO0157936A1 WO 2001057936 A1 WO2001057936 A1 WO 2001057936A1 JP 0100074 W JP0100074 W JP 0100074W WO 0157936 A1 WO0157936 A1 WO 0157936A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- light emitting
- light
- transistor
- group
- semi
- Prior art date
Links
- 239000011159 matrix material Substances 0.000 title claims abstract description 34
- 239000000758 substrate Substances 0.000 claims description 10
- 238000010586 diagram Methods 0.000 description 9
- 239000004065 semiconductor Substances 0.000 description 8
- 238000003491 array Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 3
- 238000005530 etching Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000000137 annealing Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910021332 silicide Inorganic materials 0.000 description 1
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/435—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material
- B41J2/447—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material using arrays of radiation sources
- B41J2/45—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of radiation to a printing material or impression-transfer material using arrays of radiation sources using light-emitting diode [LED] or laser arrays
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/15—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components having potential barriers, specially adapted for light emission
- H01L27/153—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components having potential barriers, specially adapted for light emission in a repetitive configuration, e.g. LED bars
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/0004—Devices characterised by their operation
- H01L33/0008—Devices characterised by their operation having p-n or hi-lo junctions
- H01L33/0016—Devices characterised by their operation having p-n or hi-lo junctions having at least two p-n junctions
Definitions
- the present invention relates to a light emitting element matrix array, and in particular, to a light emitting element matrix array capable of controlling a light emitting state of a light emitting element with a small control current.
- a light emitting element array used in an optical printer basically, as many wires as the number of light emitting elements need to be extracted from the light emitting elements.
- the wire bonding method is usually used to remove this wiring. For this reason, the following problems occur as the density of the light-emitting elements increases.
- the LED matrix array shown in Fig. 1 has multiple LEDs on an insulating substrate.
- the optical diode By making the optical diode in a straight line and forming a matrix on the anode side and the cathode side, the number of terminals taken out from the array is reduced, and Solving the problem.
- a light emitting thyristor / matrix array using a light emitting thyristor having a pnpn structure instead of a light emitting diode has been proposed.
- Fig. 2 shows this light-emitting thyristor matrix array.
- Li click Suarei a plurality of light emitting sub Lee Li scan evening T i, T 2, T 3 , ... is that are linearly arranged.
- These light-emitting thyristors are divided into groups of four, and the anodes of the light-emitting thyristors of each group are commonly connected to the anode terminals A i, A 2 , A 3,....
- the gates of the light emitting thyristors of each group are connected to the gate selection lines G i to G 4 , respectively, and the cathode of each light emitting thyristor is a cathode.
- Level of the gate selection lines ⁇ G 4, anode mode pin A, A 2, A a, I'm ... on the combination of the level of the light-emitting rhino re-scan evening, T 2, T 3, is ... lighting state of Kemah You. Since this matrix array is of the power source common type, the power source wire K is set to the L level, one of the gate selection lines G is set to the L level, and the others are set to the H level. When the ground terminal A, is set to the H level in this state, the light emitting thyristor T lights up.
- the gate select lines provide the trigger signal. Since the light emission state can be controlled with a small current drive capability, the cost of the drive IC can be reduced.
- the matrix array using the light-emitting thyristor is based on the proposal of the present applicant, and has already been patented (Japanese Patent No. 2870910).
- An object of the present invention is to provide a light emitting element matrix array in which a function equivalent to that of a light emitting silicon is realized by another element.
- the function of the light-emitting thyristor is realized by combining a transistor and a light-emitting diode (LED).
- the LED can be made of a transistor emitter layer or a base collector layer, so that the combination of the transistor and the LED is It can be realized with a three-layer structure of npn or pnp. For this reason, the thickness of the epitaxial film becomes thinner than that of a light emitting thyristor requiring a pnpn four-layer structure, and the product cost can be reduced.
- FIG. 1 is a diagram showing a conventional LED matrix array.
- FIG. 2 is a diagram showing a conventional light emitting thyristor / matrix array.
- FIG. 3A is a plan view of the combination element.
- FIG. 3B is a cross-sectional view taken along the line XX ′ of FIG. 3A.
- Figure 4 is an equivalent circuit diagram of the combination element.
- FIG. 5 is a diagram showing a fabrication process of the combination element.
- FIG. 6 is a diagram showing the light emitting element matrix array of the first embodiment.
- FIG. 7 is a diagram showing the light emitting element matrix array of the second embodiment.
- FIG. 8 is a diagram showing the light emitting matrix of the third embodiment.
- FIG. 3A is a plan view
- FIG. 3B is a cross-sectional view taken along the line XX ′ of FIG. 3A.
- FIG. 4 is an equivalent circuit diagram of the combination element.
- the transistor has an npn structure composed of a first n-type semiconductor layer 21, a p-type semiconductor layer 22, and a second n-type semiconductor layer 23 on a semi-insulating GaAs substrate 20.
- 10 is an emitter terminal
- 11 is a base terminal
- 24 is an omnidirectional electrode (emitter electrode) for an n-type layer
- 25 is an omnidirectional electrode (emitter electrode) for a p-type layer.
- Reference numeral 26 denotes an ohmic electrode (collector electrode) for the n-type layer.
- the LED is manufactured by removing the second n-type semiconductor layer 23 from the formed npn structure (21, 22, 23).
- 12 is the anode terminal
- 27 is the ohmic electrode for the n-type layer (force source electrode)
- 28 is the ohmic electrode for the p-type layer (the anode electrode).
- Wiring 30 connects the LED source electrode 27 and the collector electrode 26 of the transistor. Is done.
- Figure 5 shows the process for fabricating the above combination element.
- a semi-insulated GaAs substrate 20 an npn structure composed of a first n-type semiconductor layer 21, a P-type semiconductor layer 22, and a second n-type semiconductor layer 23 is formed.
- a layer of epitaxial film is formed.
- a collector electrode 26 is formed on the n-type layer 23.
- the n-type layer 23 is etched away except for the portion where the collector electrode 26 is located.
- a transistor base electrode 25 and an LED anode electrode 28 are formed on the exposed p-type layer 22.
- the p-type layer 22 is removed by etching to form a transistor and LED islands 32 and 34, respectively.
- an annealing process is performed.
- the n-type layer 21 is removed by etching, and the transistor and the LED are separated by a mesa structure.
- a protective film 40 is formed as a whole, and contact holes are formed on the electrodes 24, 25, 26, 27, 28, and then the wiring is formed on the protective film 40.
- the materials using the epitaxal films shown in Table 1 below are all GaAs.
- AuGeNi / Au was used for the electrode for the n-type layer, and AuZn / Au was used for the ⁇ electrode for the p-type layer.
- the first n-type layer is used as an emitter of a transistor and the second n-type layer is used as a collector of a transistor.
- the first n-type layer is a transistor collector and the second n-type layer is a transistor collector. It can also be used as an evening.
- the embodiment has been described by taking the pnp structure as an example, the pnp structure can be similarly realized.
- the emitter terminal 10 is set to 0 V, and the base terminal 11 and the anode terminal 12 are both connected.
- the LED can emit light.
- FIG. 6 shows an embodiment in which a plurality of combination elements are linearly arranged to form a light-emitting element matrix array.
- the combination elements of the transistor Tr and the light emitting diode L are divided into four groups, and the bases of the transistors in each group are respectively connected to the base selection lines of the bus structure.
- B i to B are connected in order, and the emitters of all the transistors are commonly connected to the bus structure of the emitter line.
- the LEDs of each group are connected to the common anode terminals A i, A 2 , A a ,... Of each group.
- the level of the base selection lines ⁇ B 4 and the anode mode pin A! , A 2 , A ;,, ..., Can be selected from the light emitting diodes L 1 to L 12 .
- the light emitting diode L10 is selected.
- the base side of the transistor has a bus structure, but the anode side of the LED may have a bus structure.
- FIG. 7 shows a second embodiment in which the anode side of the LED side has a bus structure.
- the LED nodes of each group are connected to the node selection lines A to Aj of the bus structure in order, and the base of the transistor of each group is connected to the common base terminal, B 2 , B 3 , ... respectively.
- FIG. 8 is a modification of the second embodiment.
- this embodiment instead of providing a transistor for each LED, as shown in the figure, one transistor T r ⁇ , T r r 2 , T r ,,, ... are provided.
- the base of each transistor is base terminal B! , B 2 , B,,, ....
- the product cost can be reduced.
- a function equivalent to that of a light-emitting thyristor is realized by a combination element of a transistor and a light-emitting diode, and the combination circuit has a three-layer structure of npn or pnp Therefore, the cost of the light-emitting element matrix array can be reduced.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Toxicology (AREA)
- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Led Devices (AREA)
- Control Of El Displays (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01900651A EP1170807A4 (en) | 2000-01-31 | 2001-01-11 | LIGHT-EMITTING ELEMENT MATRIX FIELD |
CA002369015A CA2369015A1 (en) | 2000-01-31 | 2001-01-11 | Light-emitting element matrix array |
US09/937,041 US6590347B2 (en) | 2000-01-31 | 2001-01-11 | Light-emitting element matrix array |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000-21447 | 2000-01-31 | ||
JP2000021447A JP2001217459A (ja) | 2000-01-31 | 2000-01-31 | 発光素子アレイ |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001057936A1 true WO2001057936A1 (fr) | 2001-08-09 |
Family
ID=18547856
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2001/000074 WO2001057936A1 (fr) | 2000-01-31 | 2001-01-11 | Matrice d'elements electroluminescents |
Country Status (8)
Country | Link |
---|---|
US (1) | US6590347B2 (ja) |
EP (1) | EP1170807A4 (ja) |
JP (1) | JP2001217459A (ja) |
KR (1) | KR100675034B1 (ja) |
CN (1) | CN1358334A (ja) |
CA (1) | CA2369015A1 (ja) |
TW (1) | TW480746B (ja) |
WO (1) | WO2001057936A1 (ja) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1322597C (zh) * | 1999-08-23 | 2007-06-20 | 日本板硝子株式会社 | 发光闸流晶体管及自扫描型发光装置 |
KR101085144B1 (ko) * | 2004-04-29 | 2011-11-21 | 엘지디스플레이 주식회사 | Led 램프 유닛 |
JP5225592B2 (ja) * | 2006-02-20 | 2013-07-03 | 京セラ株式会社 | 発光素子アレイ、発光装置および画像形成装置 |
JP4885760B2 (ja) * | 2006-02-20 | 2012-02-29 | 京セラ株式会社 | 発光素子アレイ、発光装置および画像形成装置 |
EP2006918A4 (en) | 2006-02-20 | 2012-05-30 | Kyocera Corp | LUMINESCENT ELEMENT ARRAY, LIGHT-EMITTING DEVICE, AND IMAGE FORMING DEVICE |
US20080099772A1 (en) * | 2006-10-30 | 2008-05-01 | Geoffrey Wen-Tai Shuy | Light emitting diode matrix |
US10297711B2 (en) * | 2015-12-30 | 2019-05-21 | Globalfoundries Singapore Pte. Ltd. | Integrated LED and LED driver units and methods for fabricating the same |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60201382A (ja) * | 1984-03-26 | 1985-10-11 | ロ−ム株式会社 | 発光表示装置 |
JPH01178471A (ja) * | 1988-01-08 | 1989-07-14 | Rohm Co Ltd | 光プリンタの発光素子駆動回路 |
EP0335553A2 (en) * | 1988-03-18 | 1989-10-04 | Nippon Sheet Glass Co., Ltd. | Self-scanning light-emitting element array |
JPH0383377A (ja) * | 1989-08-25 | 1991-04-09 | Sony Corp | 光電子集積回路装置 |
JPH047165A (ja) * | 1990-04-25 | 1992-01-10 | Mitsubishi Electric Corp | プリンタ |
JPH0411449A (ja) * | 1990-04-28 | 1992-01-16 | Kyocera Corp | 画像形成または画像読取り装置 |
JPH04240766A (ja) * | 1991-01-25 | 1992-08-28 | Matsushita Electric Ind Co Ltd | 光電子記憶装置 |
JPH05131681A (ja) * | 1991-11-07 | 1993-05-28 | Minolta Camera Co Ltd | Ledアレイ装置 |
JPH05212905A (ja) * | 1992-01-31 | 1993-08-24 | Kyocera Corp | 画像形成装置 |
JPH0671938A (ja) * | 1992-08-28 | 1994-03-15 | Kyocera Corp | 画像形成装置 |
EP0683528A1 (en) * | 1994-05-09 | 1995-11-22 | Motorola, Inc. | Electro-optic integrated circuit and method of fabrication |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5408105A (en) * | 1992-02-19 | 1995-04-18 | Matsushita Electric Industrial Co., Ltd. | Optoelectronic semiconductor device with mesa |
-
2000
- 2000-01-31 JP JP2000021447A patent/JP2001217459A/ja active Pending
-
2001
- 2001-01-11 EP EP01900651A patent/EP1170807A4/en not_active Withdrawn
- 2001-01-11 CA CA002369015A patent/CA2369015A1/en not_active Abandoned
- 2001-01-11 KR KR1020017012312A patent/KR100675034B1/ko not_active IP Right Cessation
- 2001-01-11 WO PCT/JP2001/000074 patent/WO2001057936A1/ja active IP Right Grant
- 2001-01-11 CN CN01800021A patent/CN1358334A/zh active Pending
- 2001-01-11 US US09/937,041 patent/US6590347B2/en not_active Expired - Fee Related
- 2001-01-20 TW TW090101500A patent/TW480746B/zh not_active IP Right Cessation
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60201382A (ja) * | 1984-03-26 | 1985-10-11 | ロ−ム株式会社 | 発光表示装置 |
JPH01178471A (ja) * | 1988-01-08 | 1989-07-14 | Rohm Co Ltd | 光プリンタの発光素子駆動回路 |
EP0335553A2 (en) * | 1988-03-18 | 1989-10-04 | Nippon Sheet Glass Co., Ltd. | Self-scanning light-emitting element array |
JPH0383377A (ja) * | 1989-08-25 | 1991-04-09 | Sony Corp | 光電子集積回路装置 |
JPH047165A (ja) * | 1990-04-25 | 1992-01-10 | Mitsubishi Electric Corp | プリンタ |
JPH0411449A (ja) * | 1990-04-28 | 1992-01-16 | Kyocera Corp | 画像形成または画像読取り装置 |
JPH04240766A (ja) * | 1991-01-25 | 1992-08-28 | Matsushita Electric Ind Co Ltd | 光電子記憶装置 |
JPH05131681A (ja) * | 1991-11-07 | 1993-05-28 | Minolta Camera Co Ltd | Ledアレイ装置 |
JPH05212905A (ja) * | 1992-01-31 | 1993-08-24 | Kyocera Corp | 画像形成装置 |
JPH0671938A (ja) * | 1992-08-28 | 1994-03-15 | Kyocera Corp | 画像形成装置 |
EP0683528A1 (en) * | 1994-05-09 | 1995-11-22 | Motorola, Inc. | Electro-optic integrated circuit and method of fabrication |
Also Published As
Publication number | Publication date |
---|---|
US20020180370A1 (en) | 2002-12-05 |
CA2369015A1 (en) | 2001-08-09 |
CN1358334A (zh) | 2002-07-10 |
TW480746B (en) | 2002-03-21 |
US6590347B2 (en) | 2003-07-08 |
KR20010110704A (ko) | 2001-12-13 |
KR100675034B1 (ko) | 2007-01-29 |
EP1170807A1 (en) | 2002-01-09 |
JP2001217459A (ja) | 2001-08-10 |
EP1170807A4 (en) | 2003-06-11 |
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