CN1849024A - Light-emitting device, colour light filtering structure and producing method thereof - Google Patents
Light-emitting device, colour light filtering structure and producing method thereof Download PDFInfo
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- CN1849024A CN1849024A CN 200510065024 CN200510065024A CN1849024A CN 1849024 A CN1849024 A CN 1849024A CN 200510065024 CN200510065024 CN 200510065024 CN 200510065024 A CN200510065024 A CN 200510065024A CN 1849024 A CN1849024 A CN 1849024A
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Abstract
A luminous device consists of a color filtering structure including the first base board, a filtering component and the first protection layer; and a luminous unit. The color filtering structure is prepared as forming and covering the first protection layer being prepared by inorganic material on filtering component, combining said layer with internal side surface of the first base board to form a isolated and sealed structure for increasing service life of luminous device.
Description
Technical field
The present invention relates to a kind of light-emitting device, particularly a kind of Organic Light-Emitting Device, colour light filtering structure and manufacture method thereof.
Background technology
Along with popularizing of digital Age arriving and internet, the flat-panel screens application is from Portable, small sized product, the information of marching toward of success is used and home-use large-scale panel, more expanding to the ultra-large type video signal uses, LCD (LCD) has become one of the main product in market more at present, and Organic Light Emitting Diode (OLED) display, because production in recent years and research and development technology are more and more ripe and the extensive application nano material, make the technology of organic light emitting diode display that surprising breakthrough be arranged, colorful organic light emitting diode display has reached commercialization, and in the volume production technological development of the full-color Organic Light Emitting Diode of having marched toward.
Because organic electro-luminescent display has superior display performance, so organic electro-luminescent display causes the very large attention in market in recent years, yet, in the past in the process of making organic electro-luminescent display, must form the red of an array formula, green, blue luminescent layer, just with red, green, blue inferior pixel (Sub Pixel) luminous element is formed a pixel (Pixel), produce colored display effect to reach, yet this manufacture method must be used shielding and high accuracy contraposition, therefore very complicated of preparation process and can improve manufacturing cost, this kind manufacture method also is difficult for producing high-resolution or large-area display module in addition.In order to address the above problem, use one to have the organic electric-excitation luminescent display module of white luminous layer to produce a white light source, then again the white light that this produced is passed through colored filter, form Red Green Blue and obtain colored the demonstration with colored filter, so just do not need to use the manufacture of shielding and high accuracy contraposition.
As shown in Figure 1, profile for known light-emitting device, based on above-mentioned notion, a kind of light-emitting device 100 of bottom-emission thereby generation, the light-emitting device 100 of this bottom-emission, it has a filtering assembly 420, and it is formed on the transparency carrier 410, and on this filtering assembly 420 and transparency carrier 410, form a planarization layer 110 again.Anode 340, luminescent layer 330 and negative electrode 320 in regular turn storehouse on this planarization layer 110.One cover-plate glass 120 directly is attached on the transparency carrier 410, attaches a hygroscopic material 130 in cover-plate glass 120.Because luminescent layer 330 easy and oxygen and aqueous vapor reactions so attach a hygroscopic material 130, can prevent luminescent layer 330 inferior solutions and degeneration.But when adopting above-mentioned filtering assembly 420, because it contains organic pigment, and organic pigment and wherein disperse the transparent resin of organic pigment usually to contain wetly, in addition, planarization layer 110 also contains wetly, so luminescent layer 330 can be degenerated because of the micro-aqueous vapor that filtering assembly 420 and planarization layer 110 are discharged.
Announce the 6th, 580 as United States Patent (USP), No. 214 patents; it discloses a kind of structure of organic luminescence display unit, but there is no protective layer on colored filter or the luminescent layer, therefore; the colorized optical filtering sector-meeting discharges aqueous vapor, and luminescent layer is degenerated, and influences the yield and the life-span of display.
As No. 2003/0230972 patent of U.S. Patent Publication, it discloses a kind of organic light emitting display, and wherein colored filter and luminescent layer are arranged on the same substrate, and it is the structure that is used for protecting negative electrode and following each layer thereof that a protective layer is arranged.Luminescent layer still can be subjected to the aqueous vapor that colored filter disengages and degenerate, and influences the yield and the life-span of display.
The 2003-317952 patent is disclosed as Japan Patent, it discloses an organic light emitting display, wherein has a transparent covering layer to cover on the colored filter, and this transparent covering layer is an organic material, made in the mode of rotary coating (Spin-Coating), had the characteristic that blocks gas.Yet rotary coating is a kind of wet type method for making, and therefore the transparent covering layer that makes can contain quite high humidity, causes colored filter to reduce the life-span because of absorbing moisture easily.And then luminescent layer can be subjected to the aqueous vapor that colored filter disengages and degenerate, and influences the yield and the life-span of display.In addition, this organic light emitting display be by column to adjust the height between two substrates, when making, must accurately control the height of each column, so increased the complexity on many preparation process again.
Summary of the invention
The purpose of this invention is to provide a kind of light-emitting device, colour light filtering structure and manufacture method thereof; it is by the setting of a protective layer; to prevent that luminescent layer is subjected to coming from the infringement of the contained aqueous vapor of filtering assembly, with the life-span of prolongation luminescence component and the rate of finished products on the raising preparation process.
For reaching above-mentioned purpose, the invention provides a kind of light-emitting device, this light-emitting device comprises a colour light filtering structure and an illuminating part; This colour light filtering structure comprises: one first substrate; One filtering assembly is formed on the medial surface of this first substrate; And one first protective layer, form and be covered on this filtering assembly, and combine with the medial surface of this first substrate, form one and block hermetically-sealed construction, wherein this first protective layer is an inorganic.This illuminating part comprises: one second substrate is formed with many arrays control assembly on this second substrate; One first electrode is formed on this second substrate; One luminescent layer is located on this first electrode; One second electrode is located on this luminescent layer; And one second protective layer, it is covered on this second electrode, and combines with the medial surface of this second substrate, forms one and blocks hermetically-sealed construction.
The present invention also provides a kind of colour light filtering structure, and it comprises: one first substrate; One filtering assembly is formed on the medial surface of this first substrate; One first protective layer forms and is covered on this filtering assembly, and combines with the medial surface of this first substrate, forms one and blocks hermetically-sealed construction, and wherein this first protective layer is an inorganic.
The present invention also provides a kind of manufacture method of colour light filtering structure, comprises the following steps: to provide one first substrate; On the medial surface of this first substrate, form a filtering assembly in; And use dry type to become embrane method to form one first protective layer, and be covered on this filtering assembly and and combine with the medial surface of this first substrate, become and block hermetically-sealed construction.
Enforcement of the present invention can reach following effect at least:
One, prevents that the luminescent layer in the illuminating part is subjected to coming from the infringement of the contained aqueous vapor of filtering assembly.
Two, can prolong the life-span of light-emitting device.
Three, by the mode of separately making, can detect respectively, make up again after the detection, can and improve rate of finished products and efficient on the processing procedure illuminating part and optical filtering portion.
For making purpose of the present invention, structural feature and function thereof there are further understanding, now cooperate related embodiment and accompanying drawing to be described in detail as follows.
Description of drawings
Fig. 1 is the profile of known light-emitting device.
Fig. 2 is the profile of light-emitting device embodiment of the present invention.
Wherein, description of reference numerals is as follows:
100-light-emitting device; 110-planarization layer; 120-cover-plate glass; 130-hygroscopic material;
320-negative electrode; 330-luminescent layer; 340-anode; 410-transparency carrier;
420-filtering assembly; 20-light-emitting device; 30-illuminating part; 31-the second substrate;
32-the first electrode; 33-luminescent layer; 34-the second electrode; 35-the second protective layer;
40-colour light filtering structure; 41-the second substrate; 42-filtering assembly;
43-the first protective layer; 44-light shield layer; 50-colloid.
Embodiment
Fig. 2 shows the section enforcement illustration of light-emitting device of the present invention.Light-emitting device 20 comprises: an illuminating part 30 and a colour light filtering structure 40.This colour light filtering structure 40 comprises: one first substrate 41, a filtering assembly 42 and one first protective layer 43.This illuminating part 30 comprises: one second substrate 31, one first electrode 32, a luminescent layer 33, one second electrode 34 and one second protective layer 35.When luminescent layer 33 was organic luminous layer, light-emitting device 20 was an Organic Light-Emitting Device.
Be formed with many arrays control assembly (known figure does not show) on second substrate 31, and each control assembly drives film crystal by a switch film crystal, one and an electric capacity is constituted.The reflection coefficient of second substrate 31 can be lower than first electrode 32 and second electrode 34 again, and the reflection coefficient of second substrate 31 can set and be less than or equal to 30%, but is the best to be less than or equal to 10%.If the reflection coefficient of second substrate 31 is less than or equal to 30%, when light-emitting device 20 during in the open air use, the total amount of second substrate, 31 reflection extraneous lights will reduce, thereby can promote contrast.If the reflection coefficient of second substrate 31 is less than or equal to 10%, then can further promote contrast.If the surface of second substrate 31 is a black, then the reflection coefficient of second substrate 31 will be less than or equal to 10%.Make the surface of second substrate 31 become black, can reach by plating.
First electrode 32 can be a metal level that conducts electricity, and in order to the cathode construction as luminescent layer 33, it is formed on second substrate 31, and the one end is electrically connected on a reference potential, and this reference potential can be an earth level.
Luminescent layer 33 of the present invention is located on first electrode 32, and electrically connects with the other end of first electrode 32.Luminescent layer 33 can comprise: a hole injection layer, a hole transmission layer, an organic luminous layer, an electron transfer layer and an electron injecting layer.
Second electrode 34 can be the conduction light-transmitting materials, is used for the anode construction of luminescent layer 33, is located on this luminescent layer 33, and the one end is electrically connected with luminescent layer 33, and the other end then is electrically connected on the output of control assembly.Second electrode 34 can be transparent material. for example can be tin indium oxide (ITO) or indium zinc oxide (IZO).
Second protective layer 35; in order to block the infringement that comes from illuminating part 30 outside aqueous vapors; can select printing opacity for use but the insulation and the material of waterproof gas are made; it is covered on second electrode 34; and combine with the medial surface of second substrate 31; parcel protection first electrode 32, luminescent layer 33 and second electrode 34 block hermetically-sealed construction and form one.The material of second protective layer 35 can be silica (silicon oxide), silicon nitride (silicon nitride), siloxanes (siloxane) or its mixture.
The method for making of colour light filtering structure 40 of the present invention is as described below.On one first substrate 41, form a filtering assembly 42.Filtering assembly 42 is made up of a plurality of pixel cell, and each pixel can comprise one group of red, blue, green inferior pixel.The manufacture method of filtering assembly 42 can be decoration method, pigment dispersing method, print process, galvanoplastic or ink-jet method.For avoiding between optical filtering portion 40 each pixel cells or each time pixel, the problem that has light to interfere with each other, therefore, between each pixel cell or each time pixel of filtering assembly 42, form a light shield layer 44 (Black Matrix), to solve the problem that light interferes with each other.Then, form one first protective layer 43, be covered on the filtering assembly 42 and and combine, make to become and block hermetically-sealed construction with the medial surface of this first substrate 41.
First substrate 41 can be transparent, for example, and transparent plastic substrate or clear glass.
First protective layer 43 forms and is covered on this filtering assembly 42, and combines with the medial surface of first substrate 41, makes to become and blocks hermetically-sealed construction.Filtering assembly 42 contains organic pigment usually, and organic pigment and wherein to disperse the transparent resin of organic pigment usually to contain wetly, this trace aqueous vapor can cause the degeneration of luminescent layer 33 in the organic EL component.Be head it off, of the present invention being characterized as, first protective layer 43 that is covered on the filtering assembly 42 is inorganic.Can use dry type to become embrane method forming first protective layer 43, and can select printing opacity for use but the material of insulation and waterproof gas is made.First protective layer 43 can be silica, silicon nitride, siloxanes or its mixture.So, first protective layer 43 can be avoided the degeneration of luminescent layer 33 in order to block the infringement that comes from filtering assembly 42 contained aqueous vapors, prolongs the life-span of luminescence component.
Because filtering assembly 42 has certain heatproof upper limit, so the dry type of protective clear layer 43 becomes the temperature of carrying out of embrane method, preferably selects for use the method that is no more than the filtering assembly 42 heatproof upper limits to be made.For example, preferably under the temperature below the decomposition temperature of filtering assembly 42, carry out, for example below 220 ℃, or in the scope of room temperature to 220 ℃, carry out.So, carry out dry type and become embrane method when forming first protective layer 43, can not cause filtering assembly 42 to damage.This dry type becomes embrane method to can be physical vapor deposition mode or chemical vapor deposition mode.For example, chemical vapor deposition mode can be plasma enhanced chemical vapor deposition method (PECVD; Plasma-enhanced chemical vapor deposition), Low Pressure Chemical Vapor Deposition (LPCVD; Low pressure chemical vapor deposition) or high polymer chemistry vapour deposition process (PPCVD; Polymer polymerization chemical vapor deposition).
When illuminating part 30 and colour light filtering structure 40 are independent separately make and detect finish after, with the substrate 31 of illuminating part 30 and the substrate 41 of optical filtering portion 40, both peripheries give combination by colloid 50 in the gummed mode, making becomes a complete light-emitting device 20.This colloid 50 can use a UV cured glue, simultaneously can be by the spacing of 41 of colloid 50 control basal plate 31 and substrates, to adjust the gap of this second protective layer 35 and first protective layer 43.And, in order to make light-emitting device 20 its internal environments behind the gummed more stable, therefore can further be filled with an inert gas in this light-emitting device 20.
The above only is preferred embodiment of the present invention, when can not with limit the scope of the invention.Be that all equalizations of doing according to claims of the present invention change and modification, will do not lose main idea of the present invention place, also without departing from the spirit or scope of the invention, the former capital should be considered as further enforcement situation of the present invention.
Claims (10)
1. light-emitting device, it comprises:
One colour light filtering structure, it comprises: one first substrate; One filtering assembly is formed on the medial surface of this first substrate; And one first protective layer, form and be covered on this filtering assembly, and combine with the medial surface of this first substrate, form one and block hermetically-sealed construction, wherein this first protective layer is an inorganic; And
One illuminating part, it comprises: one second substrate is formed with many arrays control assembly on this second substrate; One first electrode is formed on this second substrate; One luminescent layer is located on this first electrode; One second electrode is located on this luminescent layer; And one second protective layer, it is covered on this second electrode, and combines with the medial surface of this second substrate, forms one and blocks hermetically-sealed construction.
2. light-emitting device as claimed in claim 1 is characterized in that this first protective layer is transparent.
3. light-emitting device as claimed in claim 1 is characterized in that the material of this first protective layer for insulation and waterproof gas.
4. light-emitting device as claimed in claim 1 is characterized in that this first protective layer is silica, silicon nitride, siloxanes or its mixture.
5. colour light filtering structure, it comprises:
One first substrate;
One filtering assembly is formed on the medial surface of this first substrate;
One first protective layer forms and is covered on this filtering assembly, and combines with the medial surface of this first substrate, forms one and blocks hermetically-sealed construction, and wherein this first protective layer is an inorganic.
6. the manufacture method of a colour light filtering structure comprises the following steps:
One first substrate is provided;
On the medial surface of this first substrate, form a filtering assembly; And
The use dry type becomes embrane method to form one first protective layer, is covered on this filtering assembly and with the medial surface of this first substrate to combine, and forms one and blocks hermetically-sealed construction.
7. manufacture method as claimed in claim 6 is characterized in that it is to carry out that this dry type becomes embrane method under the temperature below the decomposition temperature of this filtering assembly.
8. manufacture method as claimed in claim 7 is characterized in that this dry type becomes embrane method to carry out under 220 ℃.
9. manufacture method as claimed in claim 8 is characterized in that it is to carry out that this dry type becomes embrane method in the scope of room temperature to 220 ℃.
10. manufacture method as claimed in claim 6 is characterized in that it is plasma enhanced chemical vapor deposition method, Low Pressure Chemical Vapor Deposition or high polymer chemistry vapour deposition process that this dry type becomes embrane method.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510065024 CN1849024A (en) | 2005-04-12 | 2005-04-12 | Light-emitting device, colour light filtering structure and producing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200510065024 CN1849024A (en) | 2005-04-12 | 2005-04-12 | Light-emitting device, colour light filtering structure and producing method thereof |
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| CN1849024A true CN1849024A (en) | 2006-10-18 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015122148A (en) * | 2013-12-20 | 2015-07-02 | 株式会社ジャパンディスプレイ | Organic electroluminescence display device |
| CN106447846A (en) * | 2016-08-31 | 2017-02-22 | 重庆伟睿科技有限公司 | Bluetooth-based key management method |
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2005
- 2005-04-12 CN CN 200510065024 patent/CN1849024A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015122148A (en) * | 2013-12-20 | 2015-07-02 | 株式会社ジャパンディスプレイ | Organic electroluminescence display device |
| CN106447846A (en) * | 2016-08-31 | 2017-02-22 | 重庆伟睿科技有限公司 | Bluetooth-based key management method |
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