CN103325809B - Organic light-emitting display device - Google Patents
Organic light-emitting display device Download PDFInfo
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- CN103325809B CN103325809B CN201210077801.9A CN201210077801A CN103325809B CN 103325809 B CN103325809 B CN 103325809B CN 201210077801 A CN201210077801 A CN 201210077801A CN 103325809 B CN103325809 B CN 103325809B
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Abstract
The present invention provides a kind of organic light-emitting display device, comprise multiple pixel with array way arrangement, this each pixel comprises a white sub-pixels and multiple color sub-pixel, wherein, this each white sub-pixels has a diffusion unit, this diffusion unit has an insulation and the body of printing opacity, and multiple micro structure being arranged on this body.The present invention utilizes the micro structure interference light path of this diffusion unit, promote light diffusion effect and can effectively lower the mirror reflection problem of described white sub-pixels, and do not affect light in the course in described color sub-pixel region, and the visuality under environment light source can be lifted at.
Description
Technical field
The present invention relates to a kind of display device, particularly relate to a kind of organic light emitting display lowering mirror reflection
Device.
Background technology
It is currently used for developing full-color OLED (hereinafter referred to as OLED) and is substantially divided into three kinds of sides
Formula: (1) utilize can send respectively redness (R), green (G), the luminous source of blue (B) three kinds of coloured light and obtain complete
Color OLED, (2) utilize blue-light-emitting source to coordinate with converting unit of the same colour and obtain Full-color OLED, and (3) utilize
White light source coordinates with the filter unit containing R, G, B chromatic filter layer and obtains Full-color OLED.And its
In, utilize white light source to coordinate with filter unit and obtain the mode of Full-color OLED with send R respectively, G,
The mode of tri-kinds of coloured light of B compares, and its OLED evaporation processing procedure is relatively easy to, and produces yield higher, and can
Obtain the white light of greater efficiency, be therefore the development simplest mode of Full-color OLED.
Refering to Fig. 1, for a kind of bottom-emission (bottom emitting), and utilize white light source with one contain red
The structure of the OLED that color, green, the colored light-filtering units of blue color filter layer coordinate and obtain is shown
Being intended to (only showing one of them pixel in Fig. 1), this OLED comprises a transparency carrier 11,
The filter unit 12, one being formed at this substrate 11 surface is formed at the transparent anode on this filter unit 12
13, one it is formed on this transparent anode 13 and the luminescence unit 14 of white light can be sent, and one is formed at this
On light unit 14, the negative electrode 15 being made up of metal, this filter unit 12 has multiple with array way arrangement
Red filter layer 121, green color filter 122, blue color filter layer 123, and not there is the printing opacity of filter layer
District 124；When being biased from these two electrodes (negative electrode 15 and anode 13), electronics and hole are respectively from being somebody's turn to do
Negative electrode 15 injects this luminescence unit 14 with anode 13 and is combined and sends out white light in this luminescence unit 14,
And the white light sent out is by the red filter layer 121 of this filter unit 12, green color filter 122, indigo plant
HONGGUANG, green glow, blue light, and white light can be sent out respectively after color filtering optical layer 123, and transparent area 124,
This each region that can send white light is defined as white sub-pixels (hereinafter referred to as W sub-pixel), this each
The region that can send HONGGUANG, green glow, and blue light is then respectively defined as red sub-pixel (hereinafter referred to as R picture
Element), green sub-pixels (hereinafter referred to as G sub-pixel), and blue subpixels (hereinafter referred to as B sub-pixel), and
One W sub-pixel and each R, G, B sub-pixel then common definition go out its of this OLED
In a pixel.
But, owing to the negative electrode 15 of this OLED is to be made up of the most reflective metal, therefore, work as use
Person is in using this display, and the incident illumination 100 incident from the external world is incident by this transparent glass substrate 11
During to this OLED, because the position of corresponding described white sub-pixels does not have filter layer, will not be to this negative electrode
15 have any effect blocked, so incident illumination 100 can be directly through described transparent area 124 and directly by this
Negative electrode 15 reflects, and can cause user during using this OLED, and meeting is because of corresponding white
The reflection of the external incident illumination 100 of negative electrode 15 of pixel region (i.e. so-called mirror reflection) and in the screen of this display
Curtain forms inverted image and affects user viewing, and for OLED the most as shown in Figure 1, it expands
Scattered reflection is about 0.62%, and its mirror reflection is then about 24.5%, and the problem of display mirror reflection is serious.
Refering to Fig. 2, in order to solve aforementioned OLED in the mirror reflection problem in described white sub-pixels region,
Having dealer to utilize in described transparent area 124 position resin formation one resin bed 125 with light-permeable, utilizing should
Resin bed 125 lowers the reflex strength from extraneous incident incident illumination 100, to improve the sub-picture of described white
The mirror reflection problem in element region；Or as it is shown on figure 3, directly at this glass substrate 11 away from this optical filtering
The surface of unit 12, directly against last layer optical diffusion film 16, utilizes this optical diffusion film 16 by from extraneous incidence
Light spreads in advance, and the probability that attenuating incident illumination 100 enters described white sub-pixels region is anti-to improve mirror image
Penetrate problem.And the result of the OLED mirror reflection after being improved from aforementioned structure, its mirror reflection may be used
11.9% (Fig. 2) and and 4.61% (Fig. 3) it is down to respectively by 24.5% (Fig. 1).
But, aforementioned this resin bed 125 formed with light-transmissive resin, although reflex strength can be reduced, but
It is owing to this incident illumination 100 still can directly be sent by this negative electrode 15 metallic reflection, therefore mirror reflection is asked
Topic is improved limited；And utilize the method that this optical diffusion film 16 lowers mirror reflection, although can effectively reduce mirror
Face reflection problem, but scattered reflection but can be increased to 1.47% (Fig. 3) by 0.62% (Fig. 1), this be because of
It is to be attached to this glass substrate 11 surface for this optical diffusion film 16 comprehensively, therefore, not only can be by corresponding incident
Be diffused to the light of described transparent area 124 position, correspondence can be incident to the most simultaneously described redness, green,
The light diffusion of blue color filter layer 121,122,123, can further result in R, G, B sub-pixel on the contrary
The scattered reflection in region increases, and causes the problem reduced in the contrast of environment light source lower panel.
Summary of the invention
It is an object of the invention to provide one to may be used to reduce direct reflection and do not affect color sub-pixel expand
The organic light-emitting display device of scattered reflection.Then, one organic light-emitting display device of the present invention comprise multiple with
The pixel of array way arrangement, this each pixel comprises a white sub-pixels and multiple color sub-pixel,
Wherein, this each white sub-pixels has a diffusion unit, and this diffusion unit has an insulation and printing opacity
Body, and multiple micro structure being arranged on this body.
It is preferred that this organic light-emitting display device aforementioned, wherein, described micro structure is dispersed in being formed at this
In body, constitute between the microgranule of 0.1～1 μm selected from particle diameter.
It is preferred that this organic light-emitting display device aforementioned, wherein, described microgranule is made up of light transmissive material.
It is preferred that this organic light-emitting display device aforementioned, wherein, the constituent material of described microgranule is selected from pressure gram
Power, poly-silica, and the conjunction of aforementioned one of which.
It is preferred that this organic light-emitting display device aforementioned, wherein, described micro structure is to utilize laser microscopic carvings side
Formula is formed at this body.
It is preferred that this organic light-emitting display device aforementioned, wherein, described micro structure is pyramid, or tool
There is irregular surface.
It is preferred that this organic light-emitting display device aforementioned, wherein, this micro structure is to utilize laser microscopic carvings mode
It is formed at this body, identical from this body constituent material but there is different crystalline form.
It is preferred that this liquid crystal indicator aforementioned, wherein, the constituent material of this body is selected from acrylic acid, gathers
Acid imide, and polyamide.
It is preferred that this liquid crystal indicator aforementioned, wherein, the light transmittance of this body is up to more than 50%.
It is preferred that this liquid crystal indicator aforementioned, wherein, described microgranule is made up of light-proof material.
The beneficial effects of the present invention is: utilize arranging a diffusion unit in white sub-pixels position,
Not only may utilize the micro structure interference light path of this diffusion unit, promote light diffusion effect and can effectively lower institute
State the mirror reflection problem of white sub-pixels, and do not affect light in the traveling road in described color sub-pixel region
Line, and the visuality under environment light source can be lifted at.
Accompanying drawing explanation
For the above-mentioned purpose of the present invention, feature and advantage can be become apparent, below in conjunction with accompanying drawing to this
Bright detailed description of the invention elaborates, wherein:
Fig. 1 is that the known schematic diagram with white light source and the OLED structure of colored light-filtering units is described；
Fig. 2 is the schematic diagram that the OLED structure of explanatory diagram 1 also has a resin bed；
Fig. 3 is the schematic diagram that the OLED structure of explanatory diagram 1 also has an optical diffusion film；
Fig. 4 is the schematic diagram of the preferred embodiment that OLED of the present invention is described.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment the present invention is described in detail:
Refering to Fig. 4, a preferred embodiment of organic light-emitting display device of the present invention, the present embodiment is bottom one
Illustrating as a example by the structure of the OLED of luminous (bottom emitted), this organic light-emitting display device comprises: one
First substrate 2, one filter unit 3, luminescence unit 4, and one second electrode 5.
This first substrate 2 has a piece of transmitting substrate 21, and is formed at the insulation on this transmitting substrate 21 surface
Layer 22, multiple in order to provide the control element 23 of the signal of telecommunication, and one is arranged at above this insulating barrier 22, and
The first electrode 24 electrically connected with described control element 23.
Specifically, this transparent substrates 21 is selected from the light transmissive material such as glass or quartz, and this insulating barrier 22 selects
Autoxidation silicon, silicon nitride, or the transparent insulation material such as silicon oxynitride, described control element 23 can be thin film
Transistor, this first electrode 24 is anode, is selected from the transparent conductive materials such as ITO, ZnO, AZO
Constituted, owing to every material of this first substrate 2 is chosen as well known to the art and non-for the present invention
Emphasis the most no longer add narration.
This filter unit 3 is located between this insulating barrier 22 and this first electrode 24 and defines multiple pixel,
And this each pixel has a white sub-pixels that can send white light and multiple color sub-pixel, in this enforcement
Color sub-pixel described in example is R, G, B sub-pixel that can send HONGGUANG, green glow, blue light respectively.
Specifically, this filter unit 3 has multiple white light photic zone 31 with array way arrangement, red
Filter layer 32, green color filter 33, and blue color filter layer 34, the light that this luminescence unit 4 sends passes through institute
State after white light photic zone 31, red filter layer 32, green color filter 33, blue color filter layer 34 can respectively to
Sending outward white light, HONGGUANG, green glow, and blue light, this each region that can send white light is defined as W picture
Element, this each region that can send HONGGUANG, green glow, and blue light is then respectively defined as R sub-pixel, G
Pixel, and B sub-pixel, this each pixel is then by a W sub-pixel and each R, G, B
Pixel common definition goes out.
Aforementioned described redness, green, and the preparation of blue color filter layer 32,33,34 is first by a photonasty
Resin respectively with red, green, and blue pigment prepare have different colours photoresist composition after again
Obtain via lithographic process, owing to this is red, green, and the one-tenth packet of blue color filter layer 32,33,34
Become and related process mode is the most no longer to add well known to the art to repeat.
Specifically, the present invention defines the white light photic zone 31 of this W sub-pixel and may be used to for having one
Interference light path or light-absorbing diffusion unit, this diffusion unit has the body 311 of an insulation and printing opacity,
And the multiple micro structure 312 being arranged at this body 311.
This body 311 is selected from acrylic acid, polyimides, or the printing opacity insulant such as polyamide, and relatively
Goodly, the light transmittance of this body 311 is up in more than 50%；Described micro structure 312 can be dispersed in
The microgranule of this body 311, or it is formed at the fine structure in this body 311 via laser microscopic carvings mode.
Utilize described micro structure 312 reflect from extraneous incident incident illumination 100 or reflect, destroy incident illumination
Light path, promote incident illumination 100 in the diffusion effect of this white light photic zone 31, and can effectively lower this
Incident illumination 100 is in the mirror reflection in described W sub-pixel region.
Specifically, when described micro structure 312 is to be made up of the microgranule being scattered in this body 311, described
Microgranule is selected from particle diameter between the printing opacity of 0.1～1 μm or light-proof material, it is preferred that in order to not affect this
The light transmission of white light photic zone 31 entirety also has preferably diffusion effect simultaneously, and described microgranule is selected from pressure
Gram force, poly-silica, or the microgranule that the light transmissive material such as aforementioned one of which conjunction is constituted.Additionally, when described micro-knot
When structure 312 is to utilize laser microscopic carvings mode to be formed at this body 311, then may utilize the control order of laser energy
This body 311 be partially converted to different structure aspects, such as pyramid, semicircle arcuation, or have
The configurations such as irregular surface, or utilize the energy hole of laser to make the portion of this body 311 constituent material
Divide crystalline form to change, and obtain disperseing the micro structure 312 in this body 311.In this preferred embodiment
Described micro structure 312 is to be made up of acryl, and is selected from the particle diameter microgranule between 0.1～1 μm.
Additionally, it is noted that when described micro structure 312 is to be made up of microgranule, this white light photic zone
31 available processing procedure modes identical with this red, green, blue filter layer 32,33,34, first by described micro-
Grain coordinates lithographic process can be prepared by after a photoresist composition mixing again.
This luminescence unit 4, for being correspondingly arranged on described first electrode 24, can send out after accepting voltage
White light.
This second electrode 5 is negative electrode, is formed at this luminescence unit 4 surface, by low merits such as magnesium, lithium, calcium
Function metal is constituted, and can coordinate with described first electrode 24 and apply voltages to this luminescence unit 4.
Make electronics and hole (cloudy from this second electrode 5 respectively when being biased from this first and second electrode 24,5
Pole) with the first electrode 24 (anode) inject this luminescence unit 4, electronics with hole after this luminescence unit 4 is combined
Can send out white light, the white light sent out then can fit through the white light printing opacity of this filter unit 3
Layer 31, red filter layer 32, green color filter 33, and blue color filter layer 34 adjust send out photochromic,
And then generation Full-color OLED.
And by the described diffusion unit being correspondingly arranged at this each W sub-pixel region, can be directly to certainly
Extraneous incident incident illumination 100 carries out absorbing, reflect or reflecting, destroy incident illumination light path and can be effective
Lower this incident illumination 100 in the mirror reflection problem in described W sub-pixel region, and because described micro structure
312 are only correspondingly arranged at described W sub-pixel region, thus without as known attaching optical diffusion film 16, and have
The shortcoming increasing this R, G, B subpixel area scattered reflection, not only can reach the mirror lowering W sub-pixel
As the problem reflected and R, G, B sub-pixel scattered reflection can be avoided to increase simultaneously.
Additionally, be noted that when the OLED structure that this OLED is top emission type (Top emitted)
Time, then this filter unit 3 is for being arranged on above this second electrode 5, and this second electrode 5 is then selected from transparent
Conductive material, this first electrode 23 then changes into selected from the material with highly reflective, this luminescence unit 4
The light sent then can be by this second electrode 5, and this filter unit 3 sends out, it is possible to simultaneously by institute
State the diffusion unit being correspondingly arranged at this each W sub-pixel region, lower described W sub-pixel region
Mirror reflection problem, owing to the OLED structure of this top emission type (Top emitted) is the art week
Know, the most no longer add narration.
The present invention utilizes to be correspondingly arranged at described W sub-pixel and can absorb light and disturb the diffusion of light path
Unit, utilizes the micro structure 312 of this diffusion unit, incident illumination 100 the most incident to reflect
Or reflection, destroy the light path of incident illumination, not only can effectively lower this incident illumination 100 in this W sub-pixel
Mirror reflection problem, and because described micro structure 312 is only correspondingly arranged at described W sub-pixel, thus without
As known attaching optical diffusion film 16, there is the shortcoming increasing this R, G, B sub-pixel scattered reflection, not only may be used
The problem reaching attenuating mirror reflection and the shortcoming that simultaneously scattered reflection can be avoided to increase, therefore attainable cost really
The purpose of invention.
Although the present invention discloses as above with preferred embodiment, so it is not limited to the present invention, Ren Heben
Skilled person, without departing from the spirit and scope of the present invention, when making a little amendment and perfect,
Therefore protection scope of the present invention is when with being as the criterion that claims are defined.
Claims (7)
1. an organic light-emitting display device, comprises multiple pixel with array way arrangement, and each should
Pixel comprises a white sub-pixels and multiple color sub-pixel；It is characterized in that: the plurality of color sub-pixel
Including multiple chromatic filter layers, each this white sub-pixels has a diffusion unit, and this diffusion unit has
One insulation and the body of printing opacity, and multiple micro structure being arranged on this body, this diffusion unit and the plurality of coloured silk
Color filtering optical layer is same Rotating fields, and this micro structure is microgranule, and this diffusion unit is this micro structure and a photonasty
Resin composition mixing.
2. organic light-emitting display device as claimed in claim 1, it is characterised in that: described micro structure is
It is formed in this body and particle diameter is constituted between the microgranule of 0.1～1 μm by being scattered in.
3. organic light-emitting display device as claimed in claim 2, it is characterised in that: described microgranule is by thoroughly
Luminescent material is constituted.
4. organic light-emitting display device as claimed in claim 3, it is characterised in that: the structure of described microgranule
Become material selected from acryl, poly-silica, and the combination of acryl and poly-silica.
5. organic light-emitting display device as claimed in claim 1, it is characterised in that: the composition of this body
Material is selected from acrylic acid, polyimides, and polyamide.
6. organic light-emitting display device as claimed in claim 1, it is characterised in that: the light of this body is worn
Rate reaches more than 50% thoroughly.
7. organic light-emitting display device as claimed in claim 2, it is characterised in that: described microgranule is not by
Light transmissive material is constituted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210077801.9A CN103325809B (en) | 2012-03-22 | 2012-03-22 | Organic light-emitting display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210077801.9A CN103325809B (en) | 2012-03-22 | 2012-03-22 | Organic light-emitting display device |
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| CN103325809A CN103325809A (en) | 2013-09-25 |
| CN103325809B true CN103325809B (en) | 2016-12-14 |
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| CN201210077801.9A Active CN103325809B (en) | 2012-03-22 | 2012-03-22 | Organic light-emitting display device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110603576A (en) * | 2017-05-12 | 2019-12-20 | 索尼公司 | Display device |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020113458A1 (en) | 2018-12-05 | 2020-06-11 | Boe Technology Group Co., Ltd. | Light emitting diode and fabrication method thereof, display substrate and display panel |
| CN109686869B (en) * | 2019-02-28 | 2020-04-28 | 武汉华星光电半导体显示技术有限公司 | OLED display panel and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101711439A (en) * | 2007-05-31 | 2010-05-19 | 伊斯曼柯达公司 | Electroluminescent device having improved light output |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7888858B2 (en) * | 2007-08-21 | 2011-02-15 | Global Oled Technology Llc | Light emitting diode device incorporating a white light emitting layer in combination with a plurality of optical microcavities |
| JP2010050014A (en) * | 2008-08-25 | 2010-03-04 | Seiko Epson Corp | Light-emitting device and electronic equipment |
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- 2012-03-22 CN CN201210077801.9A patent/CN103325809B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101711439A (en) * | 2007-05-31 | 2010-05-19 | 伊斯曼柯达公司 | Electroluminescent device having improved light output |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110603576A (en) * | 2017-05-12 | 2019-12-20 | 索尼公司 | Display device |
| CN110603576B (en) * | 2017-05-12 | 2021-12-03 | 索尼公司 | Display device |
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| CN103325809A (en) | 2013-09-25 |
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Address after: 518100 Longhua, Shenzhen, town, Foxconn science and Technology Industrial Park E District, building 4, building 1, building Applicant after: Qunkang Technology (Shenzhen) Co., Ltd. Applicant after: Innolux Display Group Address before: 518100 Longhua, Shenzhen, town, Foxconn science and Technology Industrial Park E District, building 4, building 1, building Applicant before: Qunkang Technology (Shenzhen) Co., Ltd. Applicant before: Chimei Optoelectronics Co., Ltd. |
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