Patent Grant
11367847
The present application claims priority to the Chinese Patent Application No. CN201811306336.5, filed with the Chinese Patent Office on Nov. 5, 2018, and entitled “DISPLAY PANEL, DISPLAY DEVICE AND MANUFACTURING METHOD”, which is incorporated herein by reference in its entirety.
The present application relates to the technical field of the display and in particular to a display panel, a display device and a manufacturing method.
The description herein only provides background information related to the present application, and not intended to form the prior art necessarily.
Displays known by an inventor are generally controlled on the basis of the active switches, have the numerous advantages of thin machine body, power-saving, no radiation and the like, and are extensively applied. The displays mainly include a liquid crystal display, an organic light-emitting diodes (OLED) display, a quantum dot light emitting diodes (QLED) display, a plasma display and the like, from the view of an appearance structure, the displays include a plane-type display and a curve-type display.
With regard to the liquid crystal display, the liquid crystal display includes two parts of a liquid crystal display panel and a backlight module, a working principle of the liquid crystal display is that liquid crystal is placed between two pieces of parallel glass substrates, and a driving voltage is applied to the two pieces of the glass substrates to control a rotation direction of the liquid crystal, so that a light ray of the backlight module is refracted to generate a picture.
With regard to the OLED display, the OLED display is capable of performing display by using self-luminescence of an organic light-emitting diodes, and has the advantages of the self-luminescence, a wide viewing angle, a nearly infinite high contrast ratio, lower power consumption, a high response speed and the like. Compared with an organic fluorescent luminophore, the luminescence based on a quantum dot has the advantages of high color purity, long service life, easy dispersion and the like, and a printing technology may be adopted for preparing, the QLED is generally considered as a powerful competitor for the next generation of a display technology. The QLED is not high in composite efficiency, and short in service life.
The present application aims to provide a display panel, so as to improve the performance of a transistor.
The purpose of the present application is realized by the following technical scheme:
According to one aspect of the present application, the present application discloses a display panel, including: a substrate; active switches, formed on the substrate; a color filter layer, formed on the active switches; a first electrode layer, formed on the color filter layer; light-emitting diodes, formed on the first electrode layer; a second electrode layer, formed on the light-emitting diodes; an encapsulation layer, formed on the second electrode layer; the light-emitting diodes includes a germanium silicon quantum dot material; and a proportion range of a silicon element in the light-emitting diodes is 65%-90%, and a proportion range of a germanium element is 10%-35%.
Optionally, the light-emitting diodes further includes: an electron injection layer, electrically connected with the negative electrode layer; a first electron transport layer, formed on the electron injection layer; a red/green luminescent layer, formed on the first electron transport layer; a first hole transport layer, formed on the red/green luminescent layer; an intermediate connection layer, formed on the first hole transport layer; a second electron transport layer, formed on the intermediate connection layer, where a blue luminescent layer is formed on the electron transport layer; a second hole transport layer, formed on the blue luminescent layer; and a hole injection layer, formed on the second hole transport layer, and electrically connected with the positive electrode layer.
Optionally, the blue luminescent layer includes a silicon dioxide framework, the germanium silicon quantum dot material is formed in the silicon dioxide framework, the silicon dioxide framework includes a plurality of cylindrical holes, the holes pass through the silicon dioxide framework, and the holes are filled with the germanium silicon quantum dot material.
Optionally, the holes are arranged in a hexagon rule.
Optionally, a diameter range of the holes is 2-7 nanometers; and a wall thickness of the holes is 1-2 nanometers.
Optionally, the red/green luminescent layer includes a silicon dioxide framework, the germanium silicon quantum dot material is formed in the silicon dioxide framework, the silicon dioxide framework includes a plurality of cylindrical holes, the holes pass through the silicon dioxide framework, and the holes are filled with the germanium silicon quantum dot material.
Optionally, the light-emitting diodes further includes: an electron injection layer electrically connected with the negative electrode layer, an electron transport layer formed on the electron injection layer, a red/green luminescent layer formed on the electron transport layer, a first hole transport layer formed on the red/green luminescent layer, an intermediate connection layer formed on the first hole transport layer, an electron transport layer formed on the intermediate connection layer, where a blue luminescent layer is formed on the electron transport layer, a second hole transport layer formed on the blue luminescent layer, and a hole injection layer formed on the second hole transport layer, where the hole injection layer is electrically connected with the positive electrode layer; the blue luminescent layer includes a silicon dioxide framework, the germanium silicon quantum dot material is formed in the silicon dioxide framework, the silicon dioxide framework includes a plurality of cylindrical holes, the holes pass through the silicon dioxide framework, and the holes are filled with the germanium silicon quantum dot material, the holes are arranged in a hexagon rule, a diameter range of the holes is 2-7 nanometers; and a wall thickness of the holes is 1-2 nanometers.
Optionally, the active switches includes: a source electrode and a drain electrode, formed on the substrate of the display panel; two protecting layers, formed on the substrate and partially covering the source electrode and the drain electrode, where a groove structure is formed between the two protecting layers; a semiconductor layer, disposed between the two protecting layers, and connecting the source electrode and the drain electrode; a dielectric layer, disposed between the two protecting layers, and formed on the semiconductor layer; a gate electrode, formed on the dielectric layer; a passivation layer, formed on the gate electrode; and the semiconductor layer includes a silicon dioxide framework, and a synthetic Nano-materials containing an indium gallium zinc oxide is internally disposed in the silicon dioxide framework.
According to another aspect of the present application, the present application further discloses a manufacturing method for a display panel, and includes the following steps:
forming active switches on a substrate;
forming a color filter layer on the active switches;
forming a first electrode layer on the color filter layer;
forming light-emitting diodes on the first electrode layer;
forming a second electrode layer on the light-emitting diodes;
forming an encapsulation layer on the second electrode layer; and
where the light-emitting diodes includes a blue luminescent layer, and the blue luminescent layer includes a germanium silicon quantum dot material.
Optionally, the step of forming the light-emitting diodes on the first electrode layer includes a manufacturing method for the blue luminescent layer:
forming glue beams;
enabling the glue beams to form glue beam rods;
enabling the glue beam rods to be arranged in hexagon so as to form a hexagonal matrix;
enabling the hexagonal matrix to form a template intermediate group according to an organic molecule template self-assembly mechanism;
roasting the template intermediate group to remove a template so as to form a silicon dioxide framework; and
filling the silicon dioxide framework with a germanium silicon quantum dot material.
According to another aspect of the present application, the present application further discloses a display device, and the display device includes any one of the above display panels.
The present application adopts a silicon dioxide framework self-assembly molecule template technology, mesoporous silica has a specific pore canal structure, and is hollow, small in density and large in specific surface area, so the mesoporous silica has the unique permeability, the molecule sieving capacity, the optical property and the adsorbability, features of the blue luminescent layer may be remarkably improved, and a germanium material is high in electronic mobility, the light-emitting efficiency of the QLED may be improved, so the conductivity of a backlight source of the QLED may be effectively improved by the combination of two parties, thereby the composite performance of the QLED is improved, and the service life of the QLED is improved.
The drawings are included to provide further understanding of embodiments of the present application, which constitute a part of the specification and illustrate the embodiments of the present application, and describe the principles of the present application together with the text description. Apparently, the accompanying drawings in the following description show merely some embodiments of the present application, and a person of ordinary skill in the art may still derive other accompanying drawings from these accompanying drawings without creative efforts.
In the accompanying drawings:
The specific structure and function details disclosed herein are merely representative, and are intended to describe exemplary embodiments of the present application. However, the present application may be specifically embodied in many alternative forms, and should not be interpreted to be limited to the embodiments described herein.
In the description of the present application, it should be understood that, orientation or position relationships indicated by the terms “center”, “transversal”, “upper”, “lower”, “left”, “right”, “vertical”, “horizontal”. “top”, “bottom”, “inner”, “outer”, etc. are based on the orientation or position relationships as shown in the drawings, for ease of the description of the present application and simplifying the description only, rather than indicating or implying that the indicated device or element must have a particular orientation or be constructed and operated in a particular orientation. Therefore, these terms should not be understood as a limitation to the present application. In addition, the terms such as “first” and “second” are merely for a descriptive purpose, and cannot be understood as indicating or implying relative importance, or implicitly indicating the number of the indicated technical features. Hence, the features defined by “first” and “second” may explicitly or implicitly include one or more features. In the description of the present application, “a plurality of” means two or more, unless otherwise stated. In addition, the term “include” and any variations thereof are intended to cover a non-exclusive inclusion.
In the description of the present application, it should be understood that, unless otherwise specified and defined, the terms “install”, “connected with”, “connected to” should be comprehended in a broad sense. For example, these terms may be comprehended as being fixedly connected, detachably connected or integrally connected; mechanically connected or coupled; or directly connected or indirectly connected through an intermediate medium, or in an internal communication between two elements. The specific meanings about the foregoing terms in the present application may be understood by those skilled in the art according to specific circumstances. The terms used herein are merely for the purpose of describing the specific embodiments, and are not intended to limit the exemplary embodiments. As used herein, the singular forms “a”, “an” are intended to include the plural forms as well, unless otherwise indicated in the context clearly. It will be further understood that the terms “comprise” and/or “include” used herein specify the presence of the stated features, integers, steps, operations, elements and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or combinations thereof.
The mode of execution is optionally described below in detail in combination with the drawings 1 to 10 and the optional embodiments.
Reference to
In one or more embodiments, the light-emitting diodes 33 includes a blue luminescent layer 36, and the germanium silicon quantum dot material is doped in the blue luminescent layer 36.
In one or more embodiments, the blue luminescent layer 36 includes a silicon dioxide framework 10, the silicon dioxide framework 10 is made of a mesoporous material (namely a mesoporous silica material). The germanium silicon quantum dot material 14 is formed in the silicon dioxide framework 10, the silicon dioxide framework 10 includes a plurality of cylindrical holes 12, the holes 12 pass through the silicon dioxide framework 10, the holes 12 are filled with the germanium silicon quantum dot material 14, geranium and silicon elements are also embedded in silicon dioxide hole walls 11. The silicon dioxide framework 10 includes a plurality of the cylindrical holes 12, the holes 12 pass through the silicon dioxide framework 10, the holes 12 are filled with the germanium silicon quantum dot material 14. A hole 12 structure is adapted to so that a self-assembly molecule template solution oxide is conveniently adapted to implement, the holes 12 may be cylindrical, or polygonal, the hole structures in different shapes may be manufactured according to different manufacturing technologies and product requirements, so, various shapes of the hole 12 structures fall within a scope of the conception of the mode of execution.
In one or more embodiments, the holes 12 are arranged in a hexagon rule. A honeycomb-like structure may be formed according to the arrangement of the hexagon rule, and good in stability.
In one or more embodiments, a diameter range of holes 12 is D1: 2-7 nanometers; a wall thickness range of the holes 12 is D2: 1-2 nanometers. The wall thickness range of the holes 12 is 1-2 nanometers. The holes 12 and the hole walls are inappropriate because of a too large size and a too small size, the performance of a blue luminescent layer 36 may be guaranteed while the diameter range of the holes 12 is 2-7 nanometers, and the wall thickness range of the holes 12 is 1-2 nanometers.
In one or more embodiments, a molecule template 13 includes hole walls manufactured and formed by a silicon dioxide material; the hole walls are provided with a nanocrystal 15 of an indium gallium zinc oxide (IGZO) material, the nanocrystal 15 contains chemical elements of germanium and silicon. The molecule template 13 also adopts a hollow structure, so that the nanocrystal 15 of the IGZO material may be more uniformly mixed with mesoporous silica, and the conductivity is improved.
A quantum dot is a zero-dimension system in a low-dimension limit system, a typical structure is limited within 100 nm of an area in dimension, and less than a mean free path of an electron (a mean motion path of the electron between two times of collision). The quantum dot is formed by one or more semiconductors, and different light emitting colors may be acquired by controlling a size of the quantum dot.
While a semiconductor material is irradiated by a beam of light, after a photon is absorbed by the semiconductor material, the electron on a valence band of the photon is immigrated to a conduction band, the electron on the conduction band may also emit the photon while immigrated to the second valence band, or may be fallen into an electron trap of the semiconductor material.
A charge injection principle of the quantum dot may be introduced by the following three processes.
A first step: while a positive outgoing bias voltage is applied, a hole and an electron overcome an energy barrier of an interface, and through anode and cathode injection, respectively enter a valence band energy level of a hole transport layer and a conduction band energy level of an electron transport layer.
A second step: the hole and the electron enable the interface to accumulate charge because of an energy level difference of an external electric field.
A third step: after the electron and the hole are combined again in the quantum dot, an exciton is formed, a sub-excited state is unstable in a general environment, energy is released in the manner of light or heat and returned to a stable ground state, so electroluminescence is a current drive phenomenon.
According to a silicon dioxide framework self-assembly molecule template technology, mesoporous silica has a specific pore canal structure, and is hollow, small in density and large in specific surface area, so the mesoporous silica has the unique permeability, the molecule sieving capacity, the optical property and the adsorbability, features of the blue luminescent layer may be remarkably improved, and a germanium material is high in electronic mobility, the light-emitting efficiency of the QLED may be improved, so the conductivity of a backlight source of the QLED may be effectively improved by the combination of two parties, thereby the composite performance of the QLED is improved, and the service life of the QLED is improved. The mode of execution adopts the self-assembly molecule template technology of a regular Nano IGZO (GE, SiGe), as an IGZO source of a precursor of an object, so a silicon-hydroxyl functional group positioned on the surface of a molecule template of a subject may be converted to Nano-dots needed by Si-(IGZO)x, Ge, and Si. So the conductivity of the blue luminescent layer is remarkably improved, and the performance of the QLED is improved.
A specific structure of the blue luminescent layer 36 may reference to the above mode of execution, and is not repeatedly described herein.
Reference to
The positive electrode layer 34 covers the upper side of the multiple color filter layers 51, the positive electrode layer 34 is made of a transparent conducting material, for example, Indium Tin Oxides (ITO). Specific structures of the display panel and the blue luminescent layer may reference to the above mode of execution, and are not repeatedly described herein.
The semiconductor layer 27 includes a silicon dioxide framework 10, and a synthetic Nano-materials containing an IGZO is internally disposed in the silicon dioxide framework 10. The silicon dioxide framework 10 has a specific pore canal structure, and is hollow, small in density and large in specific surface area, so the silicon dioxide framework has the unique permeability, the molecule sieving capacity, the optical property and the adsorbability, features of the semiconductor layer 27 may be remarkably improved. The mode of execution adopts the self-assembly molecule template technology of a regular Nano IGZO (GE, SiGe), as an IGZO source of a precursor of an object, so a silicon-hydroxyl functional group positioned on the surface of a molecule template 13 of a subject may be converted to Nano-dots needed by Si-(IGZO)x, Ge, and Si. So the conductivity of the semiconductor layer 27 is remarkably improved, thereby the performance of TFT is improved.
Reference to
S51, forming active switches on a substrate;
S52, forming a color filter layer on the active switches:
S53, forming a first electrode layer on the color filter layer;
S54, forming light-emitting diodes on the first electrode layer;
S55, forming a second electrode layer on the light-emitting diodes; and
S56, forming an encapsulation layer on the second electrode layer.
The light-emitting diodes includes a germanium silicon quantum dot material.
According to a silicon dioxide framework self-assembly molecule template technology of the present application, mesoporous silica has a specific pore canal structure, and is hollow, small in density and large in specific surface area, so the mesoporous silica has the unique permeability, the molecule sieving capacity, the optical property and the adsorbability, features of the blue luminescent layer may be remarkably improved, and a germanium material is high in electronic mobility, the light-emitting efficiency of the QLED may be improved, so the conductivity of a backlight source of the QLED may be effectively improved by the combination of two parties, thereby the composite performance of the QLED is improved, and the service life of the QLED is improved. A specific structure of the blue luminescent layer may reference to the above mode of execution, and is not repeatedly described herein.
Reference to
S61, forming glue beams 18;
S62, enabling the glue beams 18 to form glue beam rods 19:
S63, enabling glue beam rods 19 to be arranged in a hexagon so as to form a hexagonal matrix 20;
S64, enabling the hexagonal matrix 20 to form a template intermediate group 21 according to an organic molecule template self-assembly mechanism;
S65, roasting the template intermediate group to remove a template so as to form a silicon dioxide framework 10; and
S66, filling the silicon dioxide framework 10 with a germanium silicon quantum dot material 14.
The hexagonal matrix formed by the glue beam rods 19 is adapted to as the template, the template itself is a setting agent, as well as a stabilizer, expected control to a material structure may be realized by changing a shape and a size of the template. In addition, an experimental apparatus is simple, and the operation is easy. The glue beam rods 19 may be recycled, so the waste is reduced, the cost is reduced and the environmental pollution is reduced. Specific structures of the display panel and the blue luminescent layer may reference to the above mode of execution, and are not repeatedly described herein.
In the above embodiment, the active switches may be a thin film transistor, and the display panel may include a liquid crystal panel, a plasma panel, an OLED panel, a QLED panel and the like. In addition, the display panel may be a plane-type panel, or a curved-type panel.
The above content is the optional detailed description to the present application in combination with the specific optional mode of execution, and the specific implementation of the present application may not be designated to be limited to these descriptions. A plurality of simple deduction or replacement to the present application may also be made by those of ordinary skill in the art under the precondition without departing from a conception of the present application, and should be considered to fall within a scope of protection of the present application.
| Number | Date | Country | Kind |
|---|---|---|---|
| 201811306336.5 | Nov 2018 | CN | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/CN2018/114558 | 11/8/2018 | WO | 00 |
| Publishing Document | Publishing Date | Country | Kind |
|---|---|---|---|
| WO2020/093310 | 5/14/2020 | WO | A |
| Number | Name | Date | Kind |
|---|---|---|---|
| 6632694 | Torvik | Oct 2003 | B2 |
| 20080121955 | Shieh et al. | May 2008 | A1 |
| 20170278894 | Sato | Sep 2017 | A1 |
| 20180046013 | Jiang | Feb 2018 | A1 |
| Number | Date | Country |
|---|---|---|
| 101057008 | Oct 2007 | CN |
| 101379222 | Mar 2009 | CN |
| 103903966 | Jul 2014 | CN |
| 105720202 | Jun 2016 | CN |
| 107689388 | Feb 2018 | CN |
| 108022976 | May 2018 | CN |
| 108376695 | Aug 2018 | CN |
| 108415193 | Aug 2018 | CN |
| 109585503 | Apr 2019 | CN |
| 20120027967 | Mar 2012 | KR |
| Entry |
|---|
| International Search Report issued in corresponding international application No. PCT/CN2018/114558, dated Jul. 18, 2019. |
| Written opinion of the International Search Authority in corresponding International application No. PCT/CN2018/114558, dated Jul. 18, 2019. |
| First Office Action from China patent office in a counterpart Chinese patent Application 201811306336.5, dated Sep. 4, 2020 (7 pages). |
| Number | Date | Country | |
|---|---|---|---|
| 20210343963 A1 | Nov 2021 | US |
