CN109686245B - Display panel and manufacturing method - Google Patents
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- CN109686245B CN109686245B CN201910121360.XA CN201910121360A CN109686245B CN 109686245 B CN109686245 B CN 109686245B CN 201910121360 A CN201910121360 A CN 201910121360A CN 109686245 B CN109686245 B CN 109686245B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/003—Light absorbing elements
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Abstract
The invention relates to the technical field of display, and provides a display panel manufacturing method and a display panel, wherein the display panel manufacturing method comprises the following steps: acquiring a polarization state of the display panel under a lateral viewing angle; and doping the light absorption material corresponding to the polarization state on the pixel limiting layer of the display panel and/or the support column layer on the pixel limiting layer according to the polarization state of the display panel. The display panel manufactured according to the present disclosure can solve the problem of polarization at a lateral viewing angle.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel and a manufacturing method thereof.
Background
The display panel generally includes an array of pixel units, each including various sub-pixel units, such as a red sub-pixel unit, a green sub-pixel unit, and a blue sub-pixel unit. Each sub-pixel element emits light of its corresponding color. When the viewing angle of the display panel is changed from small to large, the light emitted from different sub-pixel units has different attenuation conditions, so that the display panel has a polarization phenomenon under the lateral viewing angle.
In order to solve the above problems, in the related art, a grating is disposed above the sub-pixel array and parallel to the sub-pixel array, the grating includes a portion of a transparent region and a non-transparent region, and the grating is disposed such that when the sub-pixel is viewed at a large viewing angle, light projected by the sub-pixel is partially blocked by the non-transparent region of the grating.
Although the polarization phenomenon of the display panel under the lateral viewing angle is solved in the related art, the thickness of the display panel is increased by the grating, and the light emission is influenced by the grating, so that the light intensity is weakened to a certain degree.
Disclosure of Invention
The invention aims to provide a display panel and a manufacturing method thereof. The display panel manufactured by the manufacturing method of the display panel solves the problem of polarization phenomenon of the display panel under a lateral viewing angle on the premise of not increasing the thickness of the display panel.
Additional features and advantages of the invention will be set forth in the detailed description which follows, or may be learned by practice of the invention.
According to an aspect of the present invention, there is provided a method of manufacturing a display panel, the method including:
acquiring a polarization state of the display panel under a lateral viewing angle;
and according to the polarization state of the display panel under the lateral viewing angle, the pixel defining layer of the display panel and/or the support column layer on the pixel defining layer are doped with light absorbing materials corresponding to the polarization state.
In an exemplary embodiment of the present disclosure, acquiring a polarization state of a display panel at a lateral viewing angle includes:
detecting the polarization state of a finished display panel under the same process as the display panel under a lateral viewing angle;
and acquiring the polarization state of the display panel under the lateral viewing angle according to the polarization state of the finished display panel under the lateral viewing angle.
In an exemplary embodiment of the present disclosure, detecting a polarization state of a finished display panel under the same process as the display panel at a lateral viewing angle includes:
driving the finished display panel to emit white light;
acquiring the light emitting state of the finished product display panel at a viewing angle of a preset angle, so as to judge the polarization state of the finished product display panel;
wherein the preset angle is greater than a threshold angle.
In an exemplary embodiment of the present disclosure, a support column layer on a pixel defining layer and/or a pixel defining layer of a display panel is doped with a light absorbing material corresponding to a polarization state according to the polarization state of the display panel at a lateral viewing angle, including:
when the polarization state of the display panel is red light, the pixel limiting layer of the display panel and/or the support column layer on the pixel limiting layer are doped with a red light absorbing material.
In an exemplary embodiment of the present disclosure, a support column layer on a pixel defining layer and/or a pixel defining layer of a display panel is doped with a light absorbing material corresponding to a polarization state according to the polarization state of the display panel at a lateral viewing angle, including:
when the polarization state of the display panel is greenish, the green light absorbing material is doped in the pixel defining layer of the display panel and/or the supporting column layer on the pixel defining layer.
In an exemplary embodiment of the present disclosure, a support column layer on a pixel defining layer and/or a pixel defining layer of a display panel is doped with a light absorbing material corresponding to a polarization state according to the polarization state of the display panel at a lateral viewing angle, including:
when the polarization state of the display panel is blue-polarized, the blue-light absorbing material is doped in the pixel defining layer of the display panel and/or the support column layer on the pixel defining layer.
In an exemplary embodiment of the present disclosure, a pixel defining layer of the display panel and/or a support column layer on the pixel defining layer is doped with a light absorbing material corresponding to the polarization state, including:
doping the light absorbing material in the material of the pixel defining layer to be formed to form a first light absorbing mixture;
forming the first light-absorbing mixture into the pixel defining layer; and/or the presence of a gas in the gas,
doping the light absorbing material in the material of the support column layer to be formed to form a second light absorbing mixture;
forming the second light-absorbing mixture into the support post layer.
In one exemplary embodiment of the present disclosure, the mass concentration of the light absorbing material in the first light absorbing mixture is 0.05% to 0.15%;
the mass concentration of the light absorption material in the second light absorption mixture is 0.05% -0.15%.
According to one aspect of the present disclosure, a display panel is provided that includes a pixel defining layer doped with a light absorbing material.
According to one aspect of the present disclosure, a display panel is provided, which includes a pixel defining layer and a support post layer on the pixel defining layer, the pixel defining layer and/or the support post layer being doped with a light absorbing material.
The invention provides a display panel manufacturing method and a display panel. In one aspect, the present disclosure eliminates the problem of polarization of the display panel at lateral viewing angles by absorbing light corresponding to the polarization state of the display panel with a light absorbing material doped in the pixel defining layer and/or the support post layer; on the other hand, the display panel manufacturing method provided by the disclosure does not need to add any structural layer, and the thickness of the display panel is not increased.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a schematic diagram illustrating a partial structure of a display panel according to the related art;
FIG. 2 is a flow chart of an exemplary embodiment of a method of fabricating a display panel according to the present disclosure;
FIG. 3 is a graph of the absorption spectrum of cadmium telluride at different particle radii;
fig. 4 is a graph of the transmittance of light in different bands on three Lotsorb adsorbents.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.
Although relative terms, such as "upper" and "lower," may be used in this specification to describe one element of an icon relative to another, these terms are used in this specification for convenience only, e.g., in accordance with the orientation of the examples described in the figures. It will be appreciated that if the device of the icon were turned upside down, the element described as "upper" would become the element "lower". Other relative terms, such as "high," "low," "top," "bottom," "left," "right," and the like are also intended to have similar meanings. When a structure is "on" another structure, it may mean that the structure is integrally formed with the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via another structure.
The terms "a," "an," "the," and the like are used to denote the presence of one or more elements/components/parts; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc.
Fig. 1 is a schematic diagram of a partial structure of a display panel in the related art. The display panel may include a pixel defining layer 2 formed on the TFT circuit layer 1, and a light emitting layer 3 formed in an opening of the pixel defining layer 2. And a support column layer 4 is also formed above the pixel defining layer 2, and the support column layer 4 is used for supporting the mask so as to avoid the mask from directly contacting with the film layer to be formed when the film layer is formed on the pixel defining layer. In the related art, part of the light emitted from the light-emitting layer 3 propagates as indicated by arrows in fig. 1, and as can be seen from fig. 1, most of the light captured in the lateral viewing angle of the display panel passes through or is refracted at the pixel defining layer and/or the support post layer on the pixel defining layer.
Based on this, the present exemplary embodiment first provides a display panel manufacturing method, as shown in fig. 2, which is a flowchart of an exemplary embodiment of the display panel manufacturing method of the present disclosure. The method comprises the following steps:
step S1: acquiring a polarization state of the display panel under a lateral viewing angle;
step S2: and according to the polarization state of the display panel under the lateral viewing angle, the pixel defining layer of the display panel and/or the support column layer on the pixel defining layer are doped with light absorbing materials corresponding to the polarization state.
The invention provides a display panel manufacturing method, which is characterized in that a light absorption material corresponding to the polarization state is doped in a pixel limiting layer of the display panel and/or a support column layer on the pixel limiting layer according to the polarization state of the display panel. In one aspect, the present disclosure eliminates the problem of polarization of the display panel at lateral viewing angles by absorbing light corresponding to the polarization state of the display panel with a light absorbing material doped in the pixel defining layer and/or the support post layer; on the other hand, the display panel manufacturing method provided by the disclosure does not need to add any structural layer, and the thickness of the display panel is not increased.
In the present exemplary embodiment, the doping of the pixel defining layer of the display panel and/or the support column layer on the pixel defining layer with the light absorbing material corresponding to the polarization state according to the polarization state of the display panel at a lateral viewing angle may include: when the polarization state of the display panel is red light, the pixel limiting layer of the display panel and/or the support column layer on the pixel limiting layer are doped with a red light absorbing material. When the polarization state of the display panel is greenish, the green light absorbing material is doped in the pixel defining layer of the display panel and/or the supporting column layer on the pixel defining layer. When the polarization state of the display panel is blue-polarized, the blue-light absorbing material is doped in the pixel defining layer of the display panel and/or the support column layer on the pixel defining layer. Wherein, the red light absorbing material can be cadmium telluride (CdTe), as shown in fig. 3, which is an absorption spectrum of the cadmium telluride under different particle radii, wherein a-h represent the light absorption intensity of the cadmium telluride under different particle radii, as can be seen from fig. 3, the cadmium telluride has a strong absorption effect on red light and a weak absorption effect on blue light and green light, so the cadmium telluride can be used for the red light absorbing material. The blue light absorbing material can be Lotsorb adsorbent, and Lotsorb adsorbent can be selected from Lotsorb b FV-100(1mm, PC), Lotsorb b-800(2mm, PC), Lotsorb b-800(1mm, PC). FIG. 4 shows the transmittance of light of different wavelength bands on three Lotsorb adsorbents Lotsorb FV-100(1mm, PC), Lotsorb b-800(2mm, PC) and Lotsorb b-800(1mm, PC). As can be seen from fig. 4, the Lotsorb adsorbent has a small transmittance for blue light and a large transmittance for red and green light, and thus, the Lotsorb adsorbent can be used as a blue light absorbing material.
In the present exemplary embodiment, doping the light absorbing material corresponding to the polarization state in the pixel defining layer of the display panel and/or the support column layer on the pixel defining layer may include: doping the light absorbing material in the material of the pixel defining layer to be formed to form a first light absorbing mixture; forming the first light-absorbing mixture into the pixel defining layer; and/or doping the light absorbing material in the material of the support column layer to be formed to form a second light absorbing mixture; forming the second light-absorbing mixture into the support post layer. Wherein, doping the light absorbing material in the material of the pixel defining layer to be formed to form a first light absorbing mixture can uniformly dope the light absorbing material in the material of the pixel defining layer by melting or fusing; the light absorbing material is doped in the material of the support column layer to be formed to form the second light absorbing mixture, and the light absorbing material can also be uniformly doped in the material of the support column layer to be formed in a melting or fusing manner. It should be understood that in other exemplary embodiments, there may be more ways to dope the light absorbing material corresponding to the polarization state in the pixel defining layer of the display panel and/or the support column layer on the pixel defining layer, and these are within the scope of the present disclosure.
In the present exemplary embodiment, the acquisition of the polarization state of the display panel at the lateral viewing angle requires inspection after the display panel is completed, however, the formation of the pixel defining layer is an essential step in the fabrication of the display panel. In the present exemplary embodiment, acquiring the polarization state of the display panel at the lateral viewing angle may include: detecting the polarization state of a finished display panel under the same process as the display panel under a lateral viewing angle; and acquiring the polarization state of the display panel under the lateral viewing angle according to the polarization state of the finished display panel under the lateral viewing angle. The detecting the polarization state of the finished display panel under the same process as the display panel under the lateral viewing angle may include: driving the finished display panel to emit white light; and acquiring the luminous state of the finished product display panel at a viewing angle of a preset angle, so as to judge the polarization state of the finished product display panel. For example, if the light emitting state of the finished display panel is red light obtained at a viewing angle of a preset angle, it may be determined that the polarization state of the finished display panel is red light. Wherein the preset angle is greater than a threshold angle. The threshold angle is a limit angle for detecting the polarization state of the display panel, and different display panels have different threshold angles at the time of polarization detection, and for example, the threshold angle may be 70 °, 80 °, or the like.
The light absorbing material may be doped only in the pixel defining layer, only in the support column layer, or both in the pixel defining layer and the support column layer. The doping manner of the light absorbing material during the manufacturing of the display panel can be obtained through an experimental method in the present exemplary embodiment. For example, the present exemplary embodiment may first dope only the pixel defining layer with the light absorbing material and detect the polarization state of the finished display panel, and if the finished display panel still has a polarization phenomenon, the light absorbing material may be doped at the same time in the pixel defining layer and the support column layer.
In this exemplary embodiment, the mass concentration of the light absorbing material may affect the light absorbing effect of the pixel defining layer and/or the support post layer. Doping the pixel defining layer and/or the support column layer with a suitable amount of light absorbing material in mass concentration can eliminate polarization phenomena of the display panel. The mass concentration of the light absorbing material can be obtained by a number of tests. In the present exemplary embodiment, the mass concentration of the light absorbing material in the first light absorbing mixture may be 0.05% to 0.15%; the mass concentration of the light absorbing material in the second light absorbing mixture may be 0.05% to 0.15%.
The present exemplary embodiment also provides a display panel including a pixel defining layer doped with a light absorbing material.
The display panel of the present disclosure can be manufactured by the above manufacturing method of the display panel, and the display panel has the same technical features and working principle as the above manufacturing method of the display panel, and the above contents have been described in detail and are not described again here.
The present exemplary embodiment also provides a display panel including a pixel defining layer and a support pillar layer on the pixel defining layer, the pixel defining layer and/or the support pillar layer being doped with a light absorbing material.
The display panel of the present disclosure can be manufactured by the above manufacturing method of the display panel, and the display panel has the same technical features and working principle as the above manufacturing method of the display panel, and the above contents have been described in detail and are not described again here.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is to be limited only by the terms of the appended claims.
Claims (9)
1. A method for manufacturing a display panel is characterized by comprising the following steps:
acquiring a polarization state of the display panel under a lateral viewing angle;
and according to the polarization state of the display panel under the lateral viewing angle, the pixel defining layer of the display panel and/or the support column layer on the pixel defining layer are doped with light absorbing materials corresponding to the polarization state.
2. The method for manufacturing a display panel according to claim 1, wherein the obtaining of the polarization state of the display panel at the lateral viewing angle comprises:
detecting the polarization state of a finished display panel under the same process as the display panel under a lateral viewing angle;
and acquiring the polarization state of the display panel under the lateral viewing angle according to the polarization state of the finished display panel under the lateral viewing angle.
3. The method for manufacturing a display panel according to claim 2, wherein detecting the polarization state of a finished display panel under the same process as the display panel under a lateral viewing angle comprises:
driving the finished display panel to emit white light;
acquiring the light emitting state of the finished product display panel at a viewing angle of a preset angle, so as to judge the polarization state of the finished product display panel;
wherein the preset angle is greater than a threshold angle.
4. A method for fabricating a display panel according to any one of claims 1 to 3, wherein the step of doping the pixel defining layer of the display panel and/or the support column layer on the pixel defining layer with a light absorbing material corresponding to the polarization state according to the polarization state of the display panel at a lateral viewing angle comprises:
when the polarization state of the display panel is red light, the pixel limiting layer of the display panel and/or the support column layer on the pixel limiting layer are doped with a red light absorbing material.
5. A method for fabricating a display panel according to any one of claims 1 to 3, wherein the step of doping the pixel defining layer of the display panel and/or the support column layer on the pixel defining layer with a light absorbing material corresponding to the polarization state according to the polarization state of the display panel at a lateral viewing angle comprises:
when the polarization state of the display panel is greenish, the green light absorbing material is doped in the pixel defining layer of the display panel and/or the supporting column layer on the pixel defining layer.
6. A method for fabricating a display panel according to any one of claims 1 to 3, wherein the step of doping the pixel defining layer of the display panel and/or the support column layer on the pixel defining layer with a light absorbing material corresponding to the polarization state according to the polarization state of the display panel at a lateral viewing angle comprises:
when the polarization state of the display panel is blue-polarized, the blue-light absorbing material is doped in the pixel defining layer of the display panel and/or the support column layer on the pixel defining layer.
7. The method for manufacturing a display panel according to claim 1, wherein the step of doping the light absorbing material corresponding to the polarization state in the pixel defining layer and/or the support column layer on the pixel defining layer of the display panel comprises:
doping the light absorbing material in the material of the pixel defining layer to be formed to form a first light absorbing mixture;
forming the first light-absorbing mixture into the pixel defining layer; and/or the presence of a gas in the gas,
doping the light absorbing material in the material of the support column layer to be formed to form a second light absorbing mixture;
forming the second light-absorbing mixture into the support post layer.
8. The method for manufacturing a display panel according to claim 7,
the mass concentration of the light absorption material in the first light absorption mixture is 0.05% -0.15%;
the mass concentration of the light absorption material in the second light absorption mixture is 0.05% -0.15%.
9. A display panel produced by the method for producing a display panel according to any one of claims 1 to 8.
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| CN201910121360.XA CN109686245B (en) | 2019-02-19 | 2019-02-19 | Display panel and manufacturing method |
| PCT/CN2020/075650 WO2020169015A1 (en) | 2019-02-19 | 2020-02-18 | Display panel manufacturing method and display panel |
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| CN201910121360.XA CN109686245B (en) | 2019-02-19 | 2019-02-19 | Display panel and manufacturing method |
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| CN109686245B (en) * | 2019-02-19 | 2020-08-25 | 绵阳京东方光电科技有限公司 | Display panel and manufacturing method |
| CN110299391A (en) * | 2019-06-27 | 2019-10-01 | 昆山国显光电有限公司 | A kind of display panel and display device |
| CN110212011B (en) * | 2019-07-12 | 2022-04-01 | 昆山国显光电有限公司 | Display panel and display device |
| CN111933670B (en) * | 2020-08-17 | 2024-06-11 | 京东方科技集团股份有限公司 | Display substrate, preparation method thereof and display device |
| CN114094025B (en) * | 2021-11-11 | 2024-03-19 | 云谷（固安）科技有限公司 | Display panel, manufacturing method thereof and display device |
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| KR101557267B1 (en) * | 2009-10-15 | 2015-10-06 | 코닝정밀소재 주식회사 | Optical filter for display device and display device having the same |
| JP2011237571A (en) * | 2010-05-10 | 2011-11-24 | Hitachi Displays Ltd | Liquid crystal display device |
| CN104078489B (en) * | 2014-06-11 | 2017-02-15 | 京东方科技集团股份有限公司 | Organic light emitting diode display panel and device |
| CN104681592B (en) * | 2014-12-23 | 2018-01-19 | 上海天马有机发光显示技术有限公司 | A kind of display panel and preparation method thereof and display device |
| KR20170001827A (en) * | 2015-06-25 | 2017-01-05 | 삼성디스플레이 주식회사 | Organic light emitting diode display |
| CN104953038B (en) * | 2015-07-09 | 2017-09-26 | 上海和辉光电有限公司 | Organic light-emitting display device |
| KR102408938B1 (en) * | 2015-07-17 | 2022-06-14 | 삼성디스플레이 주식회사 | Organic light emitting device |
| CN107464825A (en) * | 2016-06-03 | 2017-12-12 | 上海和辉光电有限公司 | A kind of OLED display panel and preparation method thereof |
| CN106848095A (en) * | 2017-01-24 | 2017-06-13 | 上海天马微电子有限公司 | Organic electroluminescent display panel, preparation method thereof and electronic equipment |
| CN107658331B (en) * | 2017-10-17 | 2021-04-13 | 京东方科技集团股份有限公司 | Display panel and display device |
| CN107731884B (en) * | 2017-11-20 | 2020-03-17 | 上海天马微电子有限公司 | Display panel and display device |
| CN108063190B (en) * | 2017-12-11 | 2020-07-31 | 合肥鑫晟光电科技有限公司 | Display back plate, preparation method thereof and display device |
| CN108231851A (en) * | 2018-01-03 | 2018-06-29 | 上海天马有机发光显示技术有限公司 | A kind of organic light emitting display panel and display device |
| CN108666445B (en) * | 2018-05-16 | 2020-04-24 | 云谷（固安）科技有限公司 | Organic electroluminescent device and organic electroluminescent apparatus |
| CN108766980B (en) * | 2018-05-28 | 2021-02-23 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
| CN109036130A (en) * | 2018-07-19 | 2018-12-18 | 武汉天马微电子有限公司 | foldable display panel and display device |
| CN109065754A (en) * | 2018-08-03 | 2018-12-21 | 武汉华星光电半导体显示技术有限公司 | A kind of OLED display panel and preparation method thereof |
| CN109768180A (en) * | 2018-12-20 | 2019-05-17 | 华映科技（集团）股份有限公司 | Oled substrate, the production method of oled substrate and flexible display apparatus |
| CN109686245B (en) * | 2019-02-19 | 2020-08-25 | 绵阳京东方光电科技有限公司 | Display panel and manufacturing method |
| CN109873024A (en) * | 2019-04-09 | 2019-06-11 | 京东方科技集团股份有限公司 | Display base plate and preparation method thereof, display device |
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| CN109686245A (en) | 2019-04-26 |
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