CN110021651B - Display panel and electronic device - Google Patents
Display panel and electronic device Download PDFInfo
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- CN110021651B CN110021651B CN201910253297.5A CN201910253297A CN110021651B CN 110021651 B CN110021651 B CN 110021651B CN 201910253297 A CN201910253297 A CN 201910253297A CN 110021651 B CN110021651 B CN 110021651B
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- display panel
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- light
- color film
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133609—Direct backlight including means for improving the color mixing, e.g. white
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/38—Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133614—Illuminating devices using photoluminescence, e.g. phosphors illuminated by UV or blue light
Abstract
The invention provides a display panel and an electronic device. The display panel includes: a substrate; a light emitting layer on the substrate and having a plurality of light emitting cells; an encapsulation layer covering the light emitting layer; the color film layer is positioned on the packaging layer and comprises a plurality of color film units which correspond to the light-emitting units one by one; the display panel further comprises a plurality of light conversion units, and the light conversion units are located below the junction of any two adjacent color film units. The display panel and the electronic equipment provided by the invention can eliminate the color difference phenomenon of the display panel in a large viewing angle.
Description
Technical Field
The present invention relates to the field of electronic display, and in particular, to a display panel and an electronic device.
Background
The problem of color shift is common in displays. Referring to fig. 1, at a large viewing angle, light emitted from the pixel 34 passes through the red color film layer 54 and the green color film layer 52 in sequence along the path a, resulting in a yellow red image; the red color film layer 54 and the blue color film layer 56 are sequentially passed along the path B, resulting in a purple red picture. In the liquid crystal display panel, the color shift phenomenon is more serious because a certain light mixing distance must exist between the backlight source and the color film layer.
Therefore, there is a need to improve the structure of the existing display panel, eliminate the color shift phenomenon, and improve the display quality of the display panel.
Disclosure of Invention
The invention provides a display panel and an electronic device, which are used for eliminating the color difference phenomenon of the display panel in a large viewing angle.
To solve the above problems, the present invention provides a display panel, comprising:
a substrate;
a light emitting layer on the substrate and having a plurality of light emitting cells;
an encapsulation layer covering the light emitting layer;
the color film layer is positioned on the packaging layer and comprises a plurality of color film units which correspond to the light-emitting units one by one; wherein the content of the first and second substances,
the display panel further comprises a plurality of light conversion units, and the light conversion units are located below the junction of any two adjacent color film units.
According to one aspect of the present invention, a minimum distance between boundaries of any two adjacent light conversion units is greater than or equal to a distance between boundaries of any two adjacent light emitting units.
According to one aspect of the present invention, the color film layer further includes a plurality of light blocking units, and the plurality of light blocking units are embedded between any two adjacent color film units.
According to one aspect of the present invention, the light blocking units are located above the light ray conversion units and correspond to the light ray conversion units one to one; the thicknesses of the light blocking units are equal, and the thicknesses are smaller than or equal to the thickness of the color film unit.
According to one aspect of the present invention, the material constituting the light conversion unit includes a quantum material.
According to one aspect of the invention, the quantum material comprises a quantum dot thin film.
According to one aspect of the invention, the quantum dot thin film comprises semiconductor nanoparticles composed of group two six elements or group three five elements.
According to one aspect of the invention, the semiconductor nanoparticles have a diameter of less than 100 nm.
According to one aspect of the present invention, the method of forming the semiconductor nanoparticles includes any one of transfer printing, screen printing, inkjet printing, electrofluidic printing, and photolithography processes.
Correspondingly, the invention also provides an electronic device which comprises the display panel.
The display panel provided by the invention is provided with a plurality of light conversion units, and the light conversion units are positioned below the junction of any two adjacent color film units. The light conversion unit is a quantum film. When the viewing angle is large, the quantum film can convert light rays emitted to the quantum film into invisible light rays such as infrared rays and the like, so that the phenomenon of light mixing of the light rays between adjacent pixel points is avoided, and the phenomenon of color cast is eliminated. The display panel has better display effect.
Drawings
Fig. 1 is a schematic structural diagram of a display panel in the prior art.
Fig. 2 is a schematic structural diagram of a display panel according to an embodiment of the invention.
Detailed Description
The following description of the various embodiments refers to the accompanying drawings that illustrate specific embodiments in which the invention may be practiced. The directional terms mentioned in the present invention, such as [ upper ], [ lower ], [ front ], [ rear ], [ left ], [ right ], [ inner ], [ outer ], [ side ], are only referring to the directions of the attached drawings. Accordingly, the directional terms used are used for explanation and understanding of the present invention, and are not used for limiting the present invention. In the drawings, elements having similar structures are denoted by the same reference numerals.
The prior art will first be briefly described. Referring to fig. 1, fig. 1 is a schematic structural diagram of a display panel in the prior art. The display panel includes a substrate 10, a thin film transistor layer 20, a light emitting layer 30, an encapsulation layer 40, and a color film layer. The light emitting layer includes a plurality of pixel points. The color film layer comprises a plurality of optical filters, and the optical filters correspond to the pixel points one by one. A green color film layer 52, a red filter 54 and a blue filter 56 are shown in fig. 1. The color film layer further includes a plurality of light blocking units 58 for isolating adjacent pixels on the surface of the display screen.
Referring to fig. 1, at a large viewing angle, light emitted from the pixel 34 passes through the red color film layer 54 and the green color film layer 52 in sequence along the path a, resulting in a yellow red image; the red color film layer 54 and the blue color film layer 56 are sequentially passed along the path B, resulting in a purple red picture. In the liquid crystal display panel, the color shift phenomenon is more serious because a certain light mixing distance must exist between the backlight source and the color film layer.
Therefore, the invention provides a display panel and an electronic device to eliminate the color difference phenomenon of the display panel at a large viewing angle. Referring to fig. 2, fig. 2 is a schematic structural diagram of a display panel in an embodiment of the invention. The display panel includes a plate 10, a thin film transistor layer 20, a light emitting layer 30, an encapsulation layer 40, and a color film layer. The display panel can be a liquid crystal panel or an OLED panel. The liquid crystal panel and the OLED panel are different in the manner of emitting light. The invention aims to improve the structure of the color film layer, and the technical scheme of the invention can be adopted no matter the liquid crystal panel or the OLED panel.
The substrate 10 may be a hard substrate such as a glass substrate, a metal substrate, or the like; it may also be a flexible substrate, such as an organic or inorganic polymer, and the polymer commonly used as a flexible substrate is polyimide. In the present embodiment, the substrate is preferably a glass substrate.
The light emitting layer includes a plurality of pixel points. The color film layer comprises a plurality of optical filters, and the optical filters correspond to the pixel points one by one. Fig. 2 shows a green color film layer 52, a red color filter 54, and a blue color filter 56, and a first pixel point 32 corresponding to the green color film layer 52, a second pixel point 34 corresponding to the red color filter 54, and a third pixel point 36 corresponding to the blue color filter 56. The color film layer further includes a plurality of light blocking units 58 for isolating adjacent pixels on the surface of the display screen.
The encapsulation layer 40 covers the light emitting layer. In this embodiment, the encapsulation layer 40 is a thin film encapsulation layer, and the thin film encapsulation layer is formed by alternately stacking a plurality of organic thin films and a plurality of inorganic thin films.
The color film layer is positioned on the packaging layer and comprises a plurality of color film units which are in one-to-one correspondence with the light emitting units. The green color film layer 52, the red filter 54 and the blue filter 56 are shown in fig. 2.
In this embodiment, the color film layer further includes a plurality of light blocking units 58 for isolating adjacent pixels on the surface of the display screen. The light blocking unit is positioned between any two adjacent filters. The upper surface of the light blocking unit is flush with the upper surface of the optical filter, and the lower surface of the light blocking unit is embedded in the optical filter. Preferably, a material forming the light blocking unit is a black light blocking resin.
In order to eliminate the color shift phenomenon, the display panel of the invention is further provided with a plurality of light conversion units 60, referring to fig. 2, wherein the plurality of light conversion units 60 are located below the boundary of any two adjacent color film units.
In the present embodiment, the minimum distance between the boundaries of any two adjacent light conversion units 60 is greater than or equal to the distance between the boundaries of any two adjacent light emitting units. Referring to fig. 2, in order to ensure that the light conversion unit 60 can effectively block light and prevent light from being emitted to an adjacent filter instead of the filter directly above the adjacent filter, the width of the light conversion unit 60 is greater than the shortest distance between any two adjacent pixels. That is, the boundary of the projection of the light conversion unit 60 on the light emitting layer 30 should fall into the light emitting unit of the adjacent pixel.
In order to optimize the manufacturing process and further improve the display effect, the light blocking units 58 are located above the light ray conversion units 60 and correspond to the light ray conversion units 60 one to one. Preferably, in this embodiment, the projection of the light blocking unit 58 on the substrate 10 is equal to the projection of the light conversion unit 60 on the substrate 10.
In this embodiment, in order to simplify the process and save the cost, the thicknesses of the light blocking units 60 are equal to each other, and the thicknesses are less than or equal to the thickness of the color film unit. In other embodiments, the plurality of light blocking units 60 may be provided in a plurality of thicknesses.
In the present embodiment, the material constituting the light conversion unit 60 includes a quantum material, and in the present embodiment, the quantum material includes a quantum dot thin film. The quantum dot film has a strong absorption effect on visible light, can effectively absorb the incident visible light and converts the visible light into infrared rays or ultraviolet rays which are invisible to naked eyes. Specifically, the quantum dot film includes semiconductor nanoparticles composed of group two six elements or group three five elements, such as gallium arsenide nano-film, silicon oxide nano-film, zinc sulfide nano-film, and the like. In other embodiments, the light conversion unit 60 may also be made of graphene. In the present invention, the diameter of the semiconductor nanoparticles is greater than 10 nm and less than 100 nm, for example, the diameter of the semiconductor nanoparticles is 40 nm, 50 nm or 60 nm.
The method of forming the semiconductor nanoparticles includes any one of transfer printing, screen printing, inkjet printing, electrofluidic printing, and photolithography processes. The diameters of the semiconductor nanoparticles may be equal or different depending on the manufacturing process.
Correspondingly, the invention also provides an electronic device which comprises the display panel.
The display panel provided by the invention is provided with a plurality of light conversion units, and the light conversion units are positioned below the junction of any two adjacent color film units. The light conversion unit is a quantum film. When the viewing angle is large, the quantum film can convert light rays emitted to the quantum film into invisible light rays such as infrared rays, and the like, so that the phenomenon that the light rays between adjacent pixel points are mixed is avoided.
In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore, the scope of the present invention shall be determined by the appended claims.
Claims (9)
1. A display panel, comprising:
a substrate;
a light emitting layer on the substrate and having a plurality of light emitting cells;
an encapsulation layer covering the light emitting layer;
the color film layer is positioned on the packaging layer and comprises a plurality of color film units which correspond to the light-emitting units one by one; wherein the content of the first and second substances,
the display panel further comprises a plurality of light conversion units, the light conversion units are located below the junction of any two adjacent color film units, and materials forming the light conversion units comprise quantum materials.
2. The display panel of claim 1, wherein the minimum distance between the boundaries of any two adjacent light conversion units is greater than or equal to the distance between the boundaries of any two adjacent light emitting units.
3. The display panel according to claim 1, wherein the color film layer further comprises a plurality of light blocking units, and the plurality of light blocking units are embedded between any two adjacent color film units.
4. The display panel according to claim 3, wherein the plurality of light blocking units are located above the plurality of light ray conversion units and correspond to the plurality of light ray conversion units one to one; the thicknesses of the light blocking units are equal, and the thicknesses are smaller than or equal to the thickness of the color film unit.
5. The display panel of claim 1, wherein the quantum material comprises a quantum dot film.
6. The display panel of claim 5, wherein the quantum dot film comprises semiconductor nanoparticles composed of group two six elements or group three five elements.
7. The display panel of claim 6, wherein the semiconductor nanoparticles have a diameter of less than 100 nanometers.
8. The display panel of claim 6, wherein the method of forming the semiconductor nanoparticles comprises any one of transfer printing, screen printing, inkjet printing, electrofluidic printing, and photolithography processes.
9. An electronic device, characterized in that the electronic device comprises a display panel as claimed in claims 1-8.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910253297.5A CN110021651B (en) | 2019-03-29 | 2019-03-29 | Display panel and electronic device |
| PCT/CN2019/103942 WO2020199491A1 (en) | 2019-03-29 | 2019-09-02 | Display panel and electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910253297.5A CN110021651B (en) | 2019-03-29 | 2019-03-29 | Display panel and electronic device |
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| Publication Number | Publication Date |
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| CN110021651A CN110021651A (en) | 2019-07-16 |
| CN110021651B true CN110021651B (en) | 2021-02-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910253297.5A Active CN110021651B (en) | 2019-03-29 | 2019-03-29 | Display panel and electronic device |
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| CN (1) | CN110021651B (en) |
| WO (1) | WO2020199491A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110021651B (en) * | 2019-03-29 | 2021-02-23 | 武汉华星光电技术有限公司 | Display panel and electronic device |
| CN110459581B (en) * | 2019-08-26 | 2021-09-21 | 昆山工研院新型平板显示技术中心有限公司 | Display panel and display device |
| CN110620134B (en) * | 2019-09-25 | 2021-06-29 | 纳晶科技股份有限公司 | Light conversion device, preparation method thereof and display device with light conversion device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3594018B2 (en) * | 2002-02-18 | 2004-11-24 | 富士電機ホールディングス株式会社 | Organic EL display |
| KR101924997B1 (en) * | 2012-07-03 | 2018-12-05 | 삼성디스플레이 주식회사 | Display device and the method thereof |
| JP6093543B2 (en) * | 2012-10-23 | 2017-03-08 | 株式会社ジャパンディスプレイ | Electroluminescence display device |
| JP6230328B2 (en) * | 2013-08-15 | 2017-11-15 | 株式会社ジャパンディスプレイ | Organic EL display device |
| JP2015128003A (en) * | 2013-12-27 | 2015-07-09 | ソニー株式会社 | Display device and electronic apparatus |
| CN204576024U (en) * | 2015-03-05 | 2015-08-19 | 厦门天马微电子有限公司 | A kind of color membrane substrates and display panels |
| CN104950525B (en) * | 2015-07-29 | 2018-01-02 | 厦门天马微电子有限公司 | Liquid crystal display panel and preparation method thereof, display device |
| CN206805086U (en) * | 2017-03-29 | 2017-12-26 | 肇庆高新区虎鲨电子技术有限公司 | Array display panel |
| CN108022961A (en) * | 2017-11-09 | 2018-05-11 | 上海天马有机发光显示技术有限公司 | Organic electroluminescence display panel and display device |
| CN107765475B (en) * | 2017-11-15 | 2019-12-24 | 京东方科技集团股份有限公司 | Color film substrate and display device |
| CN108020953A (en) * | 2017-12-28 | 2018-05-11 | 昆山龙腾光电有限公司 | Colored optical filtering substrates and preparation method thereof, liquid crystal display panel |
| CN108828830A (en) * | 2018-06-26 | 2018-11-16 | 武汉华星光电技术有限公司 | A kind of color membrane substrates and display panel |
| CN109004095B (en) * | 2018-07-25 | 2020-08-11 | 京东方科技集团股份有限公司 | Color film substrate and WOLED display device |
| CN109324441A (en) * | 2018-11-29 | 2019-02-12 | 武汉华星光电技术有限公司 | Color membrane substrates and liquid crystal display panel |
| CN110021651B (en) * | 2019-03-29 | 2021-02-23 | 武汉华星光电技术有限公司 | Display panel and electronic device |
-
2019
- 2019-03-29 CN CN201910253297.5A patent/CN110021651B/en active Active
- 2019-09-02 WO PCT/CN2019/103942 patent/WO2020199491A1/en active Application Filing
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| Publication number | Publication date |
|---|---|
| CN110021651A (en) | 2019-07-16 |
| WO2020199491A1 (en) | 2020-10-08 |
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