CN2400904Y - Organic electroluminescent device - Google Patents
Organic electroluminescent device Download PDFInfo
- Publication number
- CN2400904Y CN2400904Y CN99255365U CN99255365U CN2400904Y CN 2400904 Y CN2400904 Y CN 2400904Y CN 99255365 U CN99255365 U CN 99255365U CN 99255365 U CN99255365 U CN 99255365U CN 2400904 Y CN2400904 Y CN 2400904Y
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- Prior art keywords
- anode
- display screen
- display
- power supply
- organic
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- 239000000758 substrate Substances 0.000 claims abstract description 9
- 239000011368 organic material Substances 0.000 claims abstract description 7
- 238000005401 electroluminescence Methods 0.000 claims description 6
- -1 anode Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 3
- 238000004020 luminiscence type Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 12
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 239000012776 electronic material Substances 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000012044 organic layer Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- Electroluminescent Light Sources (AREA)
Abstract
The utility model relates to an organic electroluminescent device, which comprises a display screen and a power supply, wherein, the display screen comprises a substrate, an anode, an organic material layer, and a cathode which are ordinally and mutually laminated. The patterns or the characters of a luminescent device are used as the cathode, and an anode film is covered on the patterns or the character field. The cathode of the power supply is connected with the patterns or the characters, and the anode of the power supply is connected with the anode of the display screen. The organic electroluminescent clock designed according to the utility model belongs to active light emission, which can be used both in the daytime and at night. The utility model does not have the problem of view angles, and can realize versicolor display of red, blue and green by selecting the organic luminescence materials.
Description
The utility model relates to a kind of organic electroluminescence device (OEL) and makes new technology, belongs to technical field of electronic materials.This utility model is new thought and the new method in the organic electroluminescent manufacturing technology.Can make the OEL device luminous evenly, device performance is improved and improves.
LCD (LCD) and the light-emitting diode (LED) that adopts is a kind of passive display technique at present, its information display function must be realized by surround lighting or backlight, common LCD display part does not possess backlight, therefore can only by day or have the place of illumination to use, also there are shortcomings such as viewing angle characteristic is poor, low-response in LCD in addition.LED is a kind of active illuminating Display Technique, does not have the problem of subtense angle.But LED is by the restriction that is subjected to material and processing technology, display screen that can't whole structure of large-area manufacturing, and general light-emitting diode display spare is assembled by a plurality of single digital displaying blocks.And organic electroluminescent (OEL) had both had the advantage of active illuminating, can make large-area whole display screen again.In addition, it is abundant that OEL also has glow color, can realize demonstration red, blue, green multiple glow color.The OEL device is made up of transparent anode film, organic membrane and cathodic coating, and its light-emitting area depends on the overlapping portion of anode and negative electrode.The OEL device adopts low-voltage direct or pulse current to drive.
Organic EL display panel is the overlapping and compound numeral of forming by anode pattern and cathode pattern, literal, and pattern, each display element all are connected with one section lead-in wire, and realize that by display circuit OEL shows.
Present organic elctroluminescent device, anode is photo-etched into pattern and character field with the ITO film.Negative electrode constitutes with metal electrode.Adopt metal electrode to carry out the method for covering entire I TO pattern and character mostly and constitute the loop.The organic electroluminescence device that such method is made has a fatal defective: the ITO film is photo-etched into figure or character field, each figure all has an ITO lead-in wire, because every section ITO lead-in wire length thickness difference, thereby resistance differs greatly, section that has and the resistance value between the section even differ hundred times.OEL belongs to DC driven, and the voltage that is added in each display pattern and ITO lead-in wire all is identical, and the result causes display pattern different with the virtual voltage on the character field because of the voltage drop difference on the ITO lead-in wire.As shown in Figure 1, the voltage that is added on the display segment is V1, and the voltage on the ITO lead-in wire is reduced to V2, and the total voltage that is added on the electrode is V, V=V1+V2.Wherein: V is apparent driving voltage, and V1 is the actual displayed driving voltage.Above-mentioned situation will cause the display screen non-uniform light, influence the display quality of entire display screen.
The purpose of this utility model is a kind of organic electroluminescence device of design, does following improvement at above shortcoming: will need the pattern that shows, character field to realize with metallic cathode, and be photo-etched into big square with the ITO film and carry out as anode and cover pattern and character field.Original elongated ITO lead-in wire is substituted by metal electrode, owing to metal electrode conductivity than ITO film excellence, lead resistance reduces greatly.Thereby avoided the inconsistent of the actual driving voltage that causes because of contact conductor voltage drop difference., whole luminous even, be greatly improved useful life, and performance can improve greatly.
The organic electroluminescence device of the utility model design, comprise display screen and power supply, described display screen comprises substrate, anode, organic material layer and negative electrode, four laminate successively mutually, the pattern of luminescent device or character are negative electrode, anode film is topped on pattern or character field, and the negative electrode of described power supply and pattern or character link, and the anode of power supply and the anode of display screen link.
According to the organic electroluminescent clock and watch of the utility model design, the owner is moving luminous, both can use by day, can use at night again.There is not the visual angle problem in these clock and watch, can realize red, blue, green versicolor demonstration by the selection to luminous organic material.
Description of drawings:
Fig. 1 is display segment voltage (V1) and ITO lead-in wire voltage drop (V2) circuit diagram in the prior art.
Fig. 2 is the principle of luminosity schematic diagram of the utility model institute foundation.
Fig. 3 is the anode pattern of character indicator spare, is example with " Tsing-Hua University " among the figure.
Fig. 4 is the cathode pattern of " Tsing-Hua University ".
Fig. 5 is the luminous pattern of " Tsing-Hua University " character.
Fig. 6 is the drive circuit theory diagram of " Tsing-Hua University " character indicator spare.
Fig. 7 is the anode pattern of digital clock and watch.
Fig. 8 is the cathode pattern of digital clock and watch.
Fig. 9 is the luminous display graphics of digital clock and watch.
Figure 10 is the drive circuit theory diagram of digital clock and watch.
Below in conjunction with accompanying drawing, introduce in detail content of the present utility model. Among Fig. 2-Figure 10, the 1st, substrate, the 2nd, indium tin Oxide film layer (ITO) is anode, the 3rd, and the hole input layer, the 4th, luminescent layer, the 5th, the electronics input layer, 3,4, 5 layers are referred to as organic material layer, and the 6th, metal electrode is negative electrode.
There are some layers of organic film in the principle of luminosity of the utility model institute foundation as shown in Figure 2 between anode and negative electrode, These organic films play respectively transmission carrier and luminous. Under certain voltage, electronics and hole are respectively from negative electrode Being injected into carrier blocking layers with anode, meets and finally causes luminous at luminescent layer in electronics and hole.
Making of the present utility model and the course of work are as follows: the anode figure that forms nesa coating in transparent conduction base sheet 1 Shape 3; Transparent conduction base sheet in above-mentioned shaping forms some layers of organic film; At above-mentioned transparent with organic thin mould Form the metallic cathode film with special pattern on the conductive substrate, can prepare by mask plate; Above-mentioned three parts consist of Light emitting display, the figure of luminescence display has been determined in the stack of anode pattern and cathode pattern. Luminescent screen is encapsulated, Luminescent screen after will encapsulating at last and drive circuit couple together the light-emitting device of complete. The substrate of luminescent screen adopts thoroughly Bright glass or plastic sheeting are as the nesa coating employing thin mould of indium tin oxide (ITO) of anode. It is thin to be attached to anode Organic film on the film is made up of single or multiple lift organic small molecule material or high-molecular organic material, plays respectively carrier and annotates Enter and transmission and luminous effect. Cathode material adopts Mg, Ag, the metals such as A1, Ca. Because used metal Electrode material is often unstable, will be corroded in the time of in being exposed to air, therefore needs device is carried out encapsulation process. For Address this problem, all pin electrodes of light emitting display of the present utility model all adopt ITO and by ITO with drive Moving circuit links to each other, and the lead-in wire of negative electrode links to each other with corresponding ITO pin electrode, can guarantee institute when like this luminescent screen being encapsulated There is metallic area all not to be exposed in the air.
Embodiment one: with the organic electroluminescent character indicator spare that this new technology is made, all fine as " Tsing-Hua University " luminosity and uniformity.This display device has display screen, DC power supply, several parts of switch.Display screen is equally by glass substrate, anode, and multilayer organic layer and metallic cathode are formed.As Fig. 3-shown in Figure 6, character " Tsing-Hua University " is made with metal mask plate, as shown in Figure 4.On-chip ITO film is photo-etched into corresponding plane pattern, as shown in Figure 3.The two overlapping character emitting sections " Tsing-Hua University " that are combined into, its manufacturing process is the same with organic dynamic digital clock and watch manufacturing process.After making finishes, encapsulate.Character indicator spare adopts that 9V is battery-operated get final product, under the 8V direct voltage drive, can see bright green emitting, luminosity arrival 300cd/m.
Embodiment two: all better with OEL display device display effect and brightness that this design of new processes is made, this device comprises display screen and control integrated circuit, display screen comprises substrate, anode, organic material layer and negative electrode, and four laminate successively mutually, and control integrated circuit and substrate link.Button S1 when control integrated circuit comprises chip U1, power supply VCC and school.As Fig. 7-shown in Figure 10.
Anode dynamic display types is altogether adopted in the driving of these luminous clock and watch, adopts special digital decoding to drive clock integrated circuit LM8361, and CMS reverser CD4049, and channel frequency takes place is 50 or 60Hz to base during digital clock.The drive circuit theory diagram as shown in figure 10.NC is a power supply among Figure 10, and VSS is a ground connection, button when S1 is the school, and 39 is second some output, and 2-22 is a display screen pen section display interface, and 35 are time pps pulse per second signal input.Base pps pulse per second signal when LM8361 inserts 50/60Hz, output passes through reverser, after output polarity swung to, with chip corresponding to " 10 o'clock positions ", " time position ", " tenths ", the pin of " branch position " and corresponding every connection of display screen, and energized, can drive display screen and show the time, by check and correction button proof time.Under the 8V direct voltage drive, can be observed bright green emitting, display brightness reaches 300cd/m.
Claims (1)
1. organic electroluminescence device, it is characterized in that this luminescent device comprises display screen and power supply, described display screen comprises substrate, anode, organic material layer and negative electrode, four laminate successively mutually, the pattern of luminescent device or character are negative electrode, anode film is topped on pattern or character field, and the negative electrode of described power supply and pattern or character link, and the anode of power supply and the anode of display screen link.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99255365U CN2400904Y (en) | 1999-12-03 | 1999-12-03 | Organic electroluminescent device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99255365U CN2400904Y (en) | 1999-12-03 | 1999-12-03 | Organic electroluminescent device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2400904Y true CN2400904Y (en) | 2000-10-11 |
Family
ID=34038742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99255365U Expired - Lifetime CN2400904Y (en) | 1999-12-03 | 1999-12-03 | Organic electroluminescent device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2400904Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100464615C (en) * | 2000-04-10 | 2009-02-25 | 精工爱普生株式会社 | Organic electroluminescence device |
| CN100527911C (en) * | 2003-08-07 | 2009-08-12 | 佩利康有限公司 | Electroluminescent displays |
-
1999
- 1999-12-03 CN CN99255365U patent/CN2400904Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100464615C (en) * | 2000-04-10 | 2009-02-25 | 精工爱普生株式会社 | Organic electroluminescence device |
| CN100527911C (en) * | 2003-08-07 | 2009-08-12 | 佩利康有限公司 | Electroluminescent displays |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |