CN102711304B - Annular OLED light source and its preparation method - Google Patents
Annular OLED light source and its preparation method Download PDFInfo
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Abstract
The present invention provides a kind of annular OLED light source and its preparation method, annular OLED light source wherein comprises annular OLED luminous zone, described annular OLED luminous zone comprises in annular base plate, annular region in described annular base plate the anode layer, organic film and the cathode layer that arrange in turn, the encapsulation sheet described anode layer, described organic film and described cathode layer being sealed in described annular base plate; Wherein, described organic film at least comprises annular organic electro luminescent layer, is electrically connected between described anode layer, described organic electro luminescent layer and described cathode layer, and described anode layer and at least one layer of described cathode layer are transparent layer; Due to annular OLED light source be hollow can not have influence on transmittance, object setting can be observed by infinite approach when not affecting illumination, greatly reduce the decay being observed the light of object reflection and causing because of long range propagation, ensure that the sharpness of the image being observed object collected and verity, and then ensure the verity of the figure observed.
Description
Technical field
The present invention relates to a kind of OLED light source, specifically a kind of annular OLED light source and its preparation method.
Background technology
OLED, i.e. Organic Light Emitting Diode (OrganicLight-EmittingDiode), it is also called Organic Electricity laser display (OrganicElectroluminesenceDisplay, OELD), its basic structure is by the indium tin oxide of a thin and transparent tool characteristic of semiconductor, it is connected with electric power positive pole, adds another metallic cathode, be bundled into the structure such as sandwich. Whole structural sheet comprises: hole transmission layer, luminescent layer and electron transfer layer. When supplying power to appropriate voltage, within being generally 10V, positive pole hole and negative electrode electric charge will combine in luminescent layer, produce light, and the heat produced when luminescent layer is luminous is very little, generally at 30 degrees centigrade.
Medical endoscope is a pipe being equipped with light, and it can enter through oral cavity and enter in body in stomach or through other natural hole. Utilizing endoscope can see the pathology that X-ray can not show, therefore it is very useful to doctor. Medical endoscope is by its development and imaging structural classification: can substantially be divided into three major types: hard pipe type endoscope, optical fiber (hose type) endoscope and fujinon electronic video endoscope. Hard pipe type scope wherein does not re-use along with the development of new technology. Optical fiber (hose type) endoscope is made up of endoscope mirror body and cold light source two portions, two light carrying fibre bundles are had: one is light beam in mirror body, the light conduction that it is used to produce cold light source is to the body surface being observed, thus illuminate another fibre bundle being picture bundle by being observed thing surface, one end alignment eyepiece, the other end is observed thing surface by object lens sheet alignment, doctor can very intuitively arrive the situation of organ surface by eyepiece, is convenient to diagnose timely and accurately the state of an illness. The fibre bundle of conducting image constitutes the core of fiber scope, it is made up of tens thousand of superfine glass fibre, total reflection principle according to optics, the lower film of one layer of specific refractory power must be coated to again, to ensure that the light that all interior core fibres conduct can be totally reflected outside all glass fibre. Owing to the transmission of single fiber can only produce a luminous point, want to see complete image, just integrated for a large amount of fibers bundle, and image transfer must be ensured also to become same image to the other end, the position that just each fiber must be made to arrange at its two ends is identical, is called and leads picture bundle. The difference of fujinon electronic video endoscope and optical fibre endoscope be the former use photoconductive fiber pass pixel and the latter uses the CCD(Charge-coupledDevice being called miniature image sensor, Chinese full name: charge coupled cell, also ccd image sensor can be called) device, their light source is the same. Based on this, operation can be made of endoscope and laser, and the photoconductive fiber energy transmission laser bundle of endoscope, burns vegetation or tumour, closes hemorrhage blood vessel.
Chinese patent literature CN102316784A discloses the equipment in a kind of internal cavity that can insert object at least in part, particularly conduit and endoscope, this equipment comprises optical system, its for collect by inspect passage and from the light of external object (being namely observed object), this optical system comprises the OLED for described external object of throwing light on, it is arranged in inspects in passage, and to specifically disclose OLED can be transparent at least in part; By OLED being arranged in this light passage, it may be achieved the compact design of optimal illumination and whole equipment.
Disclosed in above-mentioned patent documentation, OLED light source is in use placed in the front end of optical system, for external object of throwing light on, this OLED light source is irradiated to after the luminous reflectance of external object through this OLED light source, collected by optical system again, the transmittance of part its this OLED light source whether luminous passed for reflected light in this OLED light source is all less than 100%, like this, the light of external object reflection is through all can lossy greatly after OLED light source; And, optical system collection device is fixedly installed on OLED light source rear end, cannot further near external object, the distance that the light that such external object is reflected back arrives collection optical system is relatively far away, the decay of the light that external object is reflected back is relatively many, affects the verity of the figure that optical system is collected all to a certain extent. Transmittance wherein refers to the optical throughput through transparent or semitransparent body and the percentage of its incident flux, is generally used for representing the efficiency through light of display equipment etc., and it directly has influence on the vision effect of display equipment
Summary of the invention
For this reason, to be solved by this invention is that the OLED light source used in existing endoscope is arranged on the wide lossy being observed object reflection that optical system collection device front end brings and then the technical problem of figure verity is collected in impact, it is provided that a kind of can by optical system collection device through the annular OLED light source arranged and its preparation method.
For solving the problems of the technologies described above, the technical solution used in the present invention is as follows:
A kind of annular OLED light source, comprise annular OLED luminous zone, described annular OLED luminous zone comprises in annular base plate, annular region in described annular base plate the anode layer, organic film and the cathode layer that arrange in turn, by described anode layer, described organic film and the sealing of described cathode layer encapsulation sheet on the substrate; Wherein, described organic film at least comprises annular organic electro luminescent layer, is electrically connected between described anode layer, described organic electro luminescent layer and described cathode layer, and described anode layer and at least one layer of described cathode layer are transparent layer.
The part that described encapsulation sheet contacts with described substrate forms packaging area, and described packaging area is inside and outside two annulars, it is achieved the face encapsulation of described encapsulation sheet and described substrate.
Described encapsulation sheet is coated with UV glue as cementing agent with the packaging area of described substrate.
A preparation method for above-mentioned annular OLED light source, comprises the steps:
1. annular base plate is cleaned;
2. prepare anode layer in the annular region in described annular base plate;
3. preparing organic film in the annular region in described annular base plate, described organic film at least comprises annular organic electro luminescent layer;
4. cathode layer is prepared in the annular region in described annular base plate;
5. arrange encapsulation sheet described anode layer, described organic film and described cathode layer to be sealed on the substrate;
6. the part outside described annular region on described substrate is excised;
Wherein, it is electrically connected between described anode layer, described organic electro luminescent layer and described cathode layer, and, described anode layer and at least one layer of described cathode layer are transparent layer.
The described step part that 5. described encapsulation sheet contacts with described substrate forms packaging area, and described packaging area is inside and outside two annulars, it is achieved the face encapsulation of described encapsulation sheet and described substrate.
Described step 5. in be also included in described packaging area coating UV glue as the step of cementing agent.
Described step 6. in the part excised on described substrate outside described annular region by laser or sandblasting mode.
In addition, need to indicate especially: the annular OLED light source of the present invention is not limited to be used in endoscope, can be used as general light source to use, it is possible to for microscope illumination, the illumination of machine vision system illumination, Ecological Photography, medical treatment photo illumination, instrument, dial illumination etc.
The technique scheme of the present invention has the following advantages compared to existing technology:
The present invention provides a kind of annular OLED light source, it is annular base plate owing to forming the substrate of this annular OLED light source, namely the center of this annular OLED light source is through, such annular OLED light source is used in endoscope, for fibrescope, can unhinderedly be arranged on the middle vacancy of annular OLED light source as bundle fibre system, and CCD can be directly installed on the middle vacancy of annular OLED light source in fujinon electronic video endoscope, this annular OLED light source is irradiated to the light being observed thing surface and is directly transferred to by the middle vacancy of this annular OLED light source on picture bundle fibre system or CCD, the picture bundle optical system collection device such as fibre system or CCD can when not affecting illumination through described middle vacancy and as far as possible near being observed object setting, such optical collection device distance is observed object can be more near, the distance being observed the light arrival collection optical system that object is reflected back is more near, the decay of the light that external object is reflected back is also more few, ensure the verity being observed object representation collected, thoroughly solving the light being observed object reflection of the prior art must first through OLED light source and the transmission range decay next compared with long band and then the technical problem affecting imaging verity. meanwhile, the annular OLED light source of the present invention reduces due to substrate usage quantity, has saved production cost to a certain extent. the part excision that will be on substrate outside annular region, can drop to minimum by the area that annular OLED light source takies, also facilitate the central blank area in annular OLED light source to install other parts so that use the product structure of this annular OLED light source compacter.
Certainly, the annular OLED light source of the present invention is not limited to be used in endoscope, can be used as general light source and uses, it is possible to for microscope illumination, the illumination of machine vision system illumination, Ecological Photography, medical treatment photo illumination, instrument, dial illumination etc.
Anode layer, organic electro luminescent layer and cathode layer are all set to transparent layer, it may be achieved double-side, obtain effect of better throwing light on. The part that encapsulation sheet contacts with substrate forms packaging area, and packaging area is set to annular, it is achieved the face with substrate that encapsulates encapsulates, and ensures better packaging effect.
Accompanying drawing explanation
In order to make the content of the present invention be more likely to be clearly understood, below according to a particular embodiment of the invention and by reference to the accompanying drawings, the present invention is further detailed explanation, wherein
Fig. 1 is the part-structure schematic diagram of the annular OLED light source of first embodiment of the invention;
Fig. 2 is annular OLED light source preparation method's schema of one embodiment of the invention;
Fig. 3 is annular OLED light source preparation method's schema of second embodiment of the invention;
Fig. 4 be one embodiment of the invention annular OLED light source in arrange picture bundle fibre system state reference map;
In figure, Reference numeral represents and is: 1-annular base plate, 10-annular OLED luminous zone, 11-packaging area; 2-optical fiber.
Embodiment
The annular OLED light source of one embodiment of the invention, comprise annular OLED luminous zone 10, shown in Figure 1, described annular OLED luminous zone 10 comprises annular base plate 1, anode layer to arrange in turn away from the order of described annular base plate 1 gradually in annular region in described annular base plate 1, annular organic electro luminescent layer and cathode layer, wherein, described anode layer, it is electrically connected between described organic electro luminescent layer and described cathode layer, when described electrical connection refers to that described anode layer and described cathode layer are energized, the negative electrode electric charge of positive pole hole in described anode layer in described cathode layer will be combined in described organic electro luminescent layer, produce light, described cathode layer is transparent layer, and namely the annular OLED light source of the present embodiment is one side illuminating source, an encapsulation sheet is set, described anode layer, described organic film and described cathode layer are sealed in described annular base plate 1, described encapsulation sheet has the structure coordinating with described annular base plate 1 and realizing encapsulation, specifically form the packaging area 11 of inside and outside two annular in the described encapsulation sheet part that contacts with described annular base plate 1, realize the face encapsulation of described encapsulation sheet and described annular base plate 1, ensure better packaging effect, better seal effect for obtaining, described encapsulation sheet is coated with UV glue as cementing agent with the packaging area 11 of described annular base plate 1, it is achieved the sealing of described encapsulation sheet and described annular base plate 1, it is pasted with siccative, for ensureing the Working environment of each device of described annular OLED light source in described annular region, in the present embodiment, described annular organic electro luminescent layer is positioned in same plane, and namely described annular OLED luminous zone 10 is flat luminous district, the part sandblasting being in outside described annular region cutting is formed the annular base plate of hollow by annular base plate 1 described in the present invention by the substrate (such as square, circular substrate) of general shape, the part cut down is also recycling, save substrate usage quantity, reduce the production cost of annular OLED light source. shown in Figure 4, it is used in optical fiber (hose type) endoscope for described annular OLED light source, optical fiber 2 can through the middle vacancy of described annular OLED light source, namely the middle vacancy of substrate 1 is arranged, object setting can be observed by infinite approach when not affecting illumination, greatly reduce the decay being observed the light of object reflection and causing because of long range propagation, ensure that the sharpness of the image being observed object collected and verity. also facilitate the middle vacancy in annular OLED light source that other parts are installed to use the product structure of this annular OLED light source compacter.
As a distortion of above-described embodiment, described anode layer, described organic electro luminescent layer and described cathode layer are transparent layer, produce the OLED annular light source of lighting at two sides like this, and the same above-described embodiment of other structures, this does not repeat. Or only there is anode layer to be transparent layer, it is achieved the one side of another kind of form is luminous, and other same above-described embodiments, can realize the object of the present invention equally, belong to protection scope of the present invention.
As the annular OLED light source of the 2nd embodiment of the present invention, comprising annular OLED luminous zone 10, described annular OLED luminous zone 10 is arranged in annular by the luminous unit of some OLED and forms, and can realize the object of the present invention equally, belong to protection scope of the present invention.
As another embodiment of the present invention's annular OLED light source, for increasing the light-emitting area of described annular OLED light source, the annular OLED luminous zone 10 of plane can also be manufactured curved surface, the annular OLED luminous zone 10 of curved surface briefly can be arranged in the luminous unit of some OLED, also the method in first embodiment of the invention that can refer to directly prepares the annular OLED luminous zone 10 of curved surface, and then prepares the annular OLED light source of curved surface.
Meanwhile, the present invention provides the preparation method method of annular OLED light source described in above-mentioned first embodiment, shown in Figure 2, specifically comprises the steps:
S11: cleaning base plate;
S12: the circular anode pattern preparing certain size in the annular region cleaned on clean described substrate, obtains circular anode layer;
S13: steam on circular anode layer and be coated with standby annular organic electro luminescent layer;
S14: be close to the cathode layer that described organic electro luminescent layer is transparent;
Wherein, it is electrically connected between described anode layer, described organic electro luminescent layer and described cathode layer;
S15: encapsulation sheet is set, described anode layer, described organic film and described cathode layer are sealed on the substrate, the part that described encapsulation sheet and described substrate contact forms packaging area, described packaging area is inside and outside two annulars, and apply UV glue as cementing agent at described packaging area, it is achieved the face encapsulation of described encapsulation sheet and described substrate;
S16: the part being in outside described annular region on described substrate is cut away by sandblasting, and then obtain the annular OLED light source of the hollow of the present invention.
Shown in Figure 3, as another kind of preparation method of annular OLED light source of the present invention, comprise the steps:
S21: cutting obtains annular base plate 1, and cleans the described annular base plate 1 after cutting;
S22: prepare transparent anode layer on the ring surface of described annular base plate 1 after cleaning;
S23: the described anode layer in described annular base plate 1 steams plating organic film, described organic film comprises annular organic electro luminescent layer;
S24: be close to described organic electro luminescent layer on the ring surface of described annular base plate 1 and prepare transparent cathode layer;
Wherein, it is electrically connected between described anode layer, described organic electro luminescent layer and described cathode layer;
S25: encapsulation sheet is set, described anode layer, described organic electro luminescent layer and described cathode layer are sealed on described substrate 1, and, for ensureing packaging effect, the part that described encapsulation sheet contacts with described substrate 1 forms packaging area 11, and described packaging area 11 is annular, it is achieved the face encapsulation of described encapsulation and described substrate 1, and it is coated with UV glue as cementing agent at the packaging area 11 at described encapsulation sheet and described substrate 1, play the effect of being better bonded and sealed.
The substrate forming annular OLED light source of the present invention is the hollow of annular, namely the center of this annular OLED light source is through, such annular OLED light source is used in endoscope, for fibrescope, can unhinderedly be arranged on the middle vacancy of annular OLED light source as bundle fibre system; And CCD can be directly installed on the middle vacancy of annular OLED light source in fujinon electronic video endoscope, this annular OLED light source is irradiated to the light being observed thing surface and is directly transferred to by the middle vacancy of this annular OLED light source on picture bundle fibre system or CCD, ensure the verity of the figure collected, thoroughly solve the light being observed object reflection of the prior art and must first pass the transmittance decay that OLED light source be brought and then the technical problem affecting imaging verity.
The annular OLED light source of the present invention, can directly be built in endoscope use, because its surface does not generate heat, avoid the local tissue damage caused because of high temperature, it is not necessary to external intercept heat leads light by fiber, can directly and camera lens integrated; It is solid-state area source, uniform illumination; Time of response is short, without infrared, uv-radiation, can effectively avoid surgical wound surface dehydration and infection; Low-voltage driving, low in energy consumption, the volume of supply battery can be very little, so can also use in micro radio endoscope, namely in capsule endoscope, annular OLED screen body is made mm level, integrated as internal illumination and CCD camera lens etc., is arranged on mirror body top; Thoroughly solve the big technical problem with being inconvenient to carry of the external power consumption brought of endoscope light source. Certainly, the annular OLED light source of the present invention is not limited to be used in endoscope, can be used as general light source and uses, it is possible to for microscope illumination, the illumination of machine vision system illumination, Ecological Photography, medical treatment photo illumination, instrument, dial illumination etc.
Obviously, above-described embodiment is only for example is clearly described, and not to the restriction of the mode of enforcement. For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description. Here without the need to also cannot all enforcement modes be given exhaustive. And the apparent change thus extended out or variation are still among the protection domain of the invention.
Claims (6)
1. an annular OLED light source, it is characterized in that: comprise annular OLED luminous zone, described annular OLED luminous zone comprises in annular base plate, annular region in described annular base plate the anode layer, organic film and the cathode layer that arrange in turn, by described anode layer, described organic film and the sealing of described cathode layer encapsulation sheet on the substrate; Wherein, described organic film at least comprises annular organic electro luminescent layer, is electrically connected between described anode layer, described organic electro luminescent layer and described cathode layer, and described anode layer and at least one layer of described cathode layer are transparent layer;
The part that described encapsulation sheet contacts with described substrate forms packaging area, and described packaging area is inside and outside two annulars, it is achieved the face encapsulation of described encapsulation sheet and described substrate.
2. annular OLED light source according to claim 1, it is characterised in that: described encapsulation sheet is coated with UV glue as cementing agent with the packaging area of described substrate.
3. the preparation method of an annular OLED light source as claimed in claim 1 or 2, it is characterised in that:
Comprise the steps:
1. cleaning base plate;
2. prepare anode layer in annular region on the substrate;
3. preparing organic film in annular region on the substrate, described organic film at least comprises annular organic electro luminescent layer;
4. cathode layer is prepared in annular region on the substrate;
5. arrange encapsulation sheet described anode layer, described organic film and described cathode layer to be sealed on the substrate;
6. the part outside described annular region on described substrate is excised;
Wherein, it is electrically connected between described anode layer, described organic electro luminescent layer and described cathode layer, and, described anode layer and at least one layer of described cathode layer are transparent layer.
4. the preparation method of annular OLED light source according to claim 3, it is characterized in that: the described step part that 5. described encapsulation sheet contacts with described substrate forms packaging area, described packaging area is inside and outside two annulars, it is achieved the face encapsulation of described encapsulation sheet and described substrate.
5. the preparation method of annular OLED light source according to claim 4, it is characterised in that: described step 5. in be also included in described packaging area coating UV glue as the step of cementing agent.
6. the preparation method of annular OLED light source according to claim 5, it is characterised in that: described step 6. in the part excised on described substrate outside described annular region by laser or sandblasting mode.
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| CN107252300B (en) * | 2017-06-01 | 2020-06-30 | 京东方科技集团股份有限公司 | Optical fiber endoscope and manufacturing method thereof |
| CN107448792A (en) * | 2017-07-27 | 2017-12-08 | 江苏集萃有机光电技术研究所有限公司 | OLED lamps chip architecture, diagnostic equipment and OLED lamp chip architecture preparation methods |
| CN109490273A (en) * | 2018-12-28 | 2019-03-19 | 浙江五相智能科技有限公司 | Optical dissolved oxygen sensor probe and its manufacturing method based on OLED light source |
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| CN101794866A (en) * | 2009-12-24 | 2010-08-04 | 彩虹集团公司 | Packaging cover plate and method for packaging OLED device by using cover plate |
| CN102316784A (en) * | 2009-02-12 | 2012-01-11 | 皇家飞利浦电子股份有限公司 | Interventional instrument with illumination means |
| CN202695555U (en) * | 2012-05-28 | 2013-01-23 | 昆山维信诺显示技术有限公司 | Annular (Organic Light Emitting Diode) light source |
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| DE102007015492B4 (en) * | 2007-01-30 | 2011-03-24 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Illumination device for an image capture device at the distal end of an endoscope |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102316784A (en) * | 2009-02-12 | 2012-01-11 | 皇家飞利浦电子股份有限公司 | Interventional instrument with illumination means |
| CN101794866A (en) * | 2009-12-24 | 2010-08-04 | 彩虹集团公司 | Packaging cover plate and method for packaging OLED device by using cover plate |
| CN202695555U (en) * | 2012-05-28 | 2013-01-23 | 昆山维信诺显示技术有限公司 | Annular (Organic Light Emitting Diode) light source |
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