CN114361352B - Semiconductor device, display panel and device, optical storage device and use method thereof - Google Patents
Semiconductor device, display panel and device, optical storage device and use method thereof Download PDFInfo
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- 238000003860 storage Methods 0.000 title claims abstract description 30
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- 239000000463 material Substances 0.000 claims abstract description 114
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- 239000010410 layer Substances 0.000 claims description 35
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- 125000000609 carbazolyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3NC12)* 0.000 claims description 9
- 150000001875 compounds Chemical class 0.000 claims description 9
- 238000001704 evaporation Methods 0.000 claims description 8
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical group C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 claims description 7
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
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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
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
- H10K71/10—Deposition of organic active material
- H10K71/16—Deposition of organic active material using physical vapour deposition [PVD], e.g. vacuum deposition or sputtering
- H10K71/166—Deposition of organic active material using physical vapour deposition [PVD], e.g. vacuum deposition or sputtering using selective deposition, e.g. using a mask
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Abstract
The application provides a semiconductor device, a display panel, a device, an optical storage device and a use method thereof, wherein the semiconductor device, the display panel, the device, the optical storage device and the use method thereof comprise a substrate, a first electrode, a functional layer and a second electrode which are arranged in a stacked mode, the functional layer at least comprises a luminescent material with an adjustable molecular configuration, and different molecular configurations correspond to at least two color intervals with different wavelengths. The luminescent material of the functional layer at least comprises at least one material with adjustable molecular configuration, different molecular configurations of the material correspond to at least two color intervals with different wavelengths, and the color intervals with at least two different wavelengths are realized by the different molecular configurations of the at least one material.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a semiconductor device, a display panel, a display device, an optical storage device, and a method for using the same.
Background
With the rapid development of terminal devices, higher demands are being put on the display of the terminal devices. The current display technology field is mainly divided into Liquid Crystal Display (LCD) and Organic Light Emitting Display (OLED). The organic light emitting display is based on the recombination of electrons and holes of an organic material to emit light to realize the display of different colors. The organic light emitting device is a self-luminous device, and has the advantages of high response speed, high brightness, wide viewing angle, low power consumption and the like.
Currently, color display is commonly realized by using red, green and blue luminescent materials, but three colors of luminescent materials are manufactured in a display panel, so that the manufacturing process is complex and the manufacturing cost is high. That is, the current display panel has the problems of complex manufacturing flow and high manufacturing cost in the manufacturing process.
Disclosure of Invention
In view of the foregoing, an object of the present application is to provide a semiconductor device, a display panel, a display device, an optical storage device, and a method of using the same, which can simplify a manufacturing process of the display panel and reduce a manufacturing cost of the display panel.
The embodiment of the application provides a semiconductor device, which comprises a substrate, a first electrode, a functional layer and a second electrode which are arranged in a stacked manner, wherein the functional layer at least comprises a luminescent material with an adjustable molecular configuration, and different molecular configurations correspond to at least two color intervals with different wavelengths.
Optionally, the luminescent material comprises a host structure with an adjustable molecular configuration and a guest structure with a constant molecular configuration.
Alternatively, the molecular configuration of the host structure is cured using a voltage.
Optionally, the host structure includes a compound X, where the compound X includes a planar group a and a planar group B bonded to each other, and after curing at different voltages, a dihedral angle θ between the planar group a and the planar group B is different.
Optionally, the first color has a center wavelength of λ1, the second color has a center wavelength of λ2, and the third color has a center wavelength of λ3, where λ1 > λ2 > λ3;
the dihedral angle theta corresponding to the first color 1 The method meets the following conditions: θ 1 ＜15°；
The dihedral angle theta corresponding to the second color 2 The method meets the following conditions: theta is less than 30 DEG 2 ＜70°；
The dihedral angle theta corresponding to the third color 3 The method meets the following conditions: 80 DEG < theta 3 ＜90°。
Optionally, the planar group a is a pyridine group and/or the planar group B is a carbazole group.
The embodiment of the application provides a display panel, including the substrate base plate, first electrode layer, luminous functional layer and the second electrode layer of range upon range of setting, luminous functional layer includes the luminous unit that a plurality of arrays were arranged, at least part the luminous unit includes the same but different luminescent material of molecular configuration, and different molecular configuration corresponds the colour interval of different wavelength respectively.
Alternatively, the molecular configuration of the host structure is cured using a voltage.
Optionally, the light-emitting units made of the light-emitting material are all prepared by adopting a one-time evaporation process.
Optionally, the light emitting unit includes a first color light emitting unit, a second color light emitting unit, and a third color light emitting unit, where the first color has a center wavelength of λ1, the second color has a center wavelength of λ2, and the third color has a center wavelength of λ3, where λ1 > λ2 > λ3;
at least the second color light emitting unit and the third color light emitting unit are prepared using the light emitting material.
The embodiment of the application provides a display device, which comprises the display panel in the embodiment.
The embodiment of the application provides an optical storage device, including the substrate base plate, first electrode layer, luminous functional layer and the second electrode layer of range upon range of setting, luminous functional layer includes a plurality of light emitting unit that arrange of array, the light emitting unit includes the adjustable luminescent material of molecular configuration, the luminescent material is by two kinds of different molecular configurations at least after solidification.
Optionally, the light-emitting functional layer is prepared through one-time evaporation process.
The embodiment of the application provides a use method of an optical storage device, which adopts the optical storage device described in the above embodiment, and the method includes:
acquiring color information on each light-emitting unit according to the content to be displayed;
and according to the color information, performing color curing on each light-emitting unit by using different voltages.
The semiconductor device provided by the embodiment of the application is applied to a display panel and comprises a substrate, a first electrode, a functional layer and a second electrode which are arranged in a laminated mode, wherein the functional layer at least comprises a luminescent material with an adjustable molecular configuration, and different molecular configurations correspond to at least two color intervals with different wavelengths. That is, the light-emitting material of the functional layer in the semiconductor device provided by the application at least includes at least one material with an adjustable molecular configuration, the different molecular configurations of the material correspond to at least two color intervals with different wavelengths, and the color intervals with at least two different wavelengths are realized by the different molecular configurations of the at least one material.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 shows a schematic structural diagram of a semiconductor device according to an embodiment of the present application;
FIG. 2 shows a schematic molecular structure of a host structure according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a molecular structure of a guest structure according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of another display panel according to an embodiment of the present disclosure;
fig. 6 shows a schematic structural diagram of a display device according to an embodiment of the present application;
FIG. 7 is a schematic diagram of an optical storage apparatus according to an embodiment of the present application;
fig. 8 is a schematic flow chart of a method for using an optical storage apparatus according to an embodiment of the present application.
Detailed Description
In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, but the present application may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present application is not limited to the specific embodiments disclosed below.
In describing embodiments of the present application in detail, the cross-sectional views illustrating the structure of the device are not to scale locally for ease of illustration, and the schematic is merely exemplary and should not limit the scope of protection of the present application. In addition, the three-dimensional dimensions of length, width and depth should be included in actual fabrication.
Currently, color display in an Organic Light Emitting Display (OLED) is commonly realized by using red, green and blue light emitting materials, but manufacturing three colors of light emitting materials in a display panel requires forming the three colors of light emitting materials by using three vapor deposition processes, and controlling the vapor deposition processes to form the positions of the three colors of light emitting materials by using three masks so as to avoid that the pixel point is disabled due to vapor deposition of the three colors of light emitting materials to the same position. That is, three vapor deposition processes and three precise masks are utilized to manufacture the display panel with accurate light emitting positions of three colors, the manufacturing process is complex, and the manufacturing cost is high.
Based on this, the embodiment of the application provides a semiconductor device, which is applied to a display panel and comprises a substrate, a first electrode, a functional layer and a second electrode which are stacked, wherein the functional layer at least comprises a luminescent material with an adjustable molecular configuration, and different molecular configurations correspond to at least two color intervals with different wavelengths. That is, the light-emitting material of the functional layer in the semiconductor device provided by the application at least includes at least one material with an adjustable molecular configuration, the different molecular configurations of the material correspond to at least two color intervals with different wavelengths, and the color intervals with at least two different wavelengths are realized by the different molecular configurations of the at least one material.
For a better understanding of the technical solutions and technical effects of the present application, specific embodiments will be described in detail below with reference to the accompanying drawings.
Referring to fig. 1, a schematic structural diagram of a semiconductor device according to an embodiment of the present application is shown. The semiconductor device provided by the embodiment of the application can be equivalent to the sub-pixel in the display panel, and the sub-pixel can be used as a basic display structure of the display panel. Each semiconductor device may correspond to light emission of one color, and the three color semiconductor devices may collectively constitute one pixel of the display panel.
The semiconductor device includes a substrate 110, a first electrode 120, a functional layer 130, and a second electrode 140, which are stacked. The functional layer 130 at least includes a luminescent material with an adjustable molecular configuration, where different molecular configurations correspond to at least two color intervals with different wavelengths, that is, the material of the functional layer at least includes at least one material with an adjustable molecular configuration, where in some embodiments, the material of the functional layer may include a same material with an adjustable molecular configuration, the same material is a material with a same molecular formula, the molecular formulas of the same material are the same, and the molecular configurations may be different, where different molecular configurations of the material correspond to at least two color intervals with different wavelengths, so that at least two color intervals with different wavelengths are implemented by the same material, that is, at least two colors of light are emitted or absorbed by the same material. In some other embodiments, the material of the functional layer may also include different kinds of materials with adjustable molecular configurations, and further more molecular configurations are realized through the different kinds of materials, so that more color luminescence is realized.
In an embodiment of the present application, the functional layer includes a light emitting material including at least a host structure with an adjustable molecular configuration and a guest structure with a constant molecular configuration.
As a possible implementation, the luminescent material may comprise a first luminescent material comprising a host structure with an adjustable molecular configuration and a guest structure with a constant molecular configuration, and a second luminescent material with an unadjustable molecular configuration. The second luminescent material corresponds to luminescence of a first color, the first luminescent material can correspond to luminescence of a second color and luminescence of a third color, the center wavelength of the first color is λ1, the center wavelength of the second color is λ2, and the center wavelength of the third color is λ3, wherein λ1 > λ2 > λ3.
As one example, the first color is red, the second color is green, and the third color is blue.
At this time, when manufacturing the semiconductor device, even when manufacturing the display panel, only two vapor deposition processes are needed, one vapor deposition process is used for simultaneously evaporating the host structure and the object structure, and the other vapor deposition process is used for evaporating the second luminescent material, so that compared with the process of forming luminescent materials with three colors by using three vapor deposition processes, the process of manufacturing the luminescent materials is simplified by using two processes, and the manufacturing cost of the display panel is reduced.
As another possible implementation manner, the light-emitting material included in the functional layer may include a host structure with an adjustable molecular configuration and a guest structure with a constant molecular configuration. The host structure with the adjustable molecular configuration and the guest structure with the unchanged molecular configuration can realize luminescence of a first color, a second color and a third color, wherein the central wavelength of the first color is lambda 1, the central wavelength of the second color is lambda 2, and the central wavelength of the third color is lambda 3, and lambda 1 is more than lambda 2 and more than lambda 3. That is, when the light emitting material includes a host structure with an adjustable molecular configuration and a guest structure with a constant molecular configuration, the light emitting material can realize light emission of three colors based on different molecular configurations.
At this time, when manufacturing the semiconductor device and even the display panel, only one evaporation process is used to manufacture the host structure and the object structure, so that light emission of three colors can be realized.
In the embodiment of the application, the luminescent material can realize at least 2 colors of luminescence, because the molecular configurations of the luminescent material are different, specifically, different molecular configurations of the main structure can correspond to color intervals of different wavelengths, and the molecular configurations of the main structure can be cured by using the voltage to realize different molecular configurations of the main structure under different voltage curing, so that the color luminescence of different wavelengths is realized.
The molecular configuration of the main structure can be cured by using voltage, namely, the molecular configuration of the main structure is different under different voltages. After the voltage is applied to the main body structure, the molecular configuration of the main body structure is determined, and even if the applied voltage is removed, the molecular configuration of the main body structure is not changed, that is, the molecular configuration of the main body structure is not changed after the voltage is applied, so that the molecular configuration can be maintained, long-term luminescence of a certain color is realized, and the stability of the material of the main body structure serving as a luminescent material of the display panel is higher.
In the embodiment of the application, the molecular configuration of the host structure is adjustable, the molecular configuration of the guest structure is unchanged, the molecular configuration of the host structure is changed, and light emission of the colors of the first color, the second color and the third color 3 can be realized by combining the guest structure, wherein the center wavelength of the first color is larger than the center wavelengths of the second color and the third color. The guest structure material may be an aromatic amine substituted naphthalene compound.
In an embodiment of the present application, the material of the host structure may at least include a compound X, where the compound X may be a phosphorus-oxygen group-containing compound, because under the action of a voltage, the phosphorus-oxygen group-containing compound may be cured to form different molecular configurations, and after the guest structure is combined, each molecular configuration corresponds to a color interval of one wavelength.
Specifically, the compound X includes a planar group a and a planar group B bonded to each other, and after curing at different voltages, the planar group a and the planar group B have different dihedral angles θ, and the corresponding host structures have different molecular configurations, so that the corresponding light emission colors after bonding with the guest structures are different. Wherein a planar group represents atoms of the group being coplanar and atoms of the group being in the same plane.
As a possible implementation manner, the center wavelength of the first color is λ1, the center wavelength of the second color is λ2, and the center wavelength of the third color is λ3, where λ1 > λ2 > λ3, then the dihedral angle θ corresponding to the first color 1 The method meets the following conditions: θ 1 < 15 DEG, dihedral angle theta corresponding to the second color 2 The method meets the following conditions: theta is less than 30 DEG 2 Less than 70 DEG, the dihedral angle theta corresponding to the third color 3 The method meets the following conditions: 80 DEG < theta 3 ＜90°。
That is, the dihedral angle θ of the planar group a and the planar group B is less than 15 °, the planar group a and the planar group B are nearly planar, the conjugation of the molecule is enlarged, the conjugated surface is correspondingly enlarged, pi action between the molecules is enhanced, and an excimer is formed between two host molecules in an excited state, that is, an excimer is formed between the planar group a and the planar group B. Due to the reduction of the energy of the host structure itself, the energy cannot be transferred to the guest structure at this time, and light emission of the first color is generated.
The phosphorus-oxygen group in the plane group A moves under the action of an electric field to push the plane group A to rotate, the dihedral angle theta between the plane group A and the plane group B is between 30 and 70 degrees, and the host structure transmits energy to the object structure at the moment to generate light emission of a second color.
The dihedral angle θ formed by planar group a and planar group B is between 80-90 ° when the host structure transfers energy to the guest structure, producing luminescence of a third color.
Referring to fig. 2 and fig. 3, fig. 2 is a schematic molecular structure of a host structure provided in an embodiment of the present application, and fig. 3 is a schematic molecular structure of a guest structure provided in an embodiment of the present application. The main structure shown in fig. 2 is a phosphorus-oxygen group-containing compound including a planar group a and a planar group B bonded to each other, the planar group a may be a pyridine group, and the planar group B may be a carbazole group. The guest structure shown in fig. 3 is naphthalene compound, and light emission of sky blue can be realized.
As an example, the first color is red, the second color is green, and the third color is blue. When the molecular configuration of the host structure is cured with a voltage, different voltages may be applied to achieve different molecular configurations of the host structure.
When a voltage of 9V or more is applied to the main structure, the dihedral angle θ of the pyridine group and the carbazole group is smaller than 15 °, and the two portions of the pyridine group and the carbazole group are nearly planar, and at this time, the conjugation of the molecule is enhanced, the conjugation of the molecule is enlarged, and accordingly, the conjugated surface is enlarged, pi action between the molecules is enhanced, and an Excimer is formed between two main molecules in an excited state, that is, an Excimer is formed between the planar group a and the planar group B. Due to the reduction of the energy of the host structure itself, the singlet energy level is lower, energy cannot be transferred to the guest structure, and the luminescence of the excimer red-shifts to form red light emission. Wherein, the excimer is an aggregate of two molecules or atoms of the same kind, and the two molecules or atoms have stronger action in the excited state, generate new energy levels, have different emission spectra from a single material, have no fine structure and have red shift.
When a voltage of 6V-9V is applied to the host structure, the phosphorus-oxygen group in the carbazole group moves under the action of an electric field to push the carbazole group to rotate, the dihedral angle theta between the pyridine group and the carbazole group is 30-70 degrees, and at the moment, the molecular dipole moment of the host structure is about 8 Debye, and the host structure transmits energy to the guest structure to generate green light emission.
When a voltage of less than 6V is applied to the host structure, the dihedral angle theta formed by the pyridine group and the carbazole group is between 80 and 90 degrees, and the molecular dipole moment of the host structure is less than 3debye at the moment, so that the host structure transmits energy to the guest structure to generate blue light emission.
As can be seen from the foregoing description, the semiconductor device in the embodiment of the present application includes a functional layer, where the functional layer includes at least one light emitting material with an adjustable molecular configuration, and different molecular configurations of the material correspond to at least two color intervals with different wavelengths, so that at least two color intervals with different molecular configurations of the at least one material correspond to at least two color intervals with different wavelengths are implemented, and thus, light emission of at least two colors is finally implemented.
Therefore, the semiconductor device provided by the embodiment of the application is applied to a display panel, and comprises a substrate, a first electrode, a functional layer and a second electrode which are arranged in a stacked manner, wherein the functional layer at least comprises a luminescent material with an adjustable molecular configuration, and different molecular configurations correspond to at least two color intervals with different wavelengths. That is, the light-emitting material of the functional layer in the semiconductor device provided by the application at least includes at least one material with an adjustable molecular configuration, the different molecular configurations of the material correspond to at least two color intervals with different wavelengths, and the color intervals with at least two different wavelengths are realized by the different molecular configurations of the at least one material.
Based on the semiconductor device provided in the above embodiments, the embodiments of the present application further provide a display panel, and the working principle thereof is described in detail below with reference to the accompanying drawings.
Referring to fig. 4, the structure block diagram of a display panel according to an embodiment of the present application is shown.
The display panel provided in this embodiment includes a substrate 410, a first electrode layer 420, a light emitting function layer 430, and a second electrode layer 440 that are stacked. The light emitting functional layer 430 includes a plurality of light emitting units 431 arranged in an array, at least some of the light emitting units 431 include light emitting materials having the same molecular formula but different molecular configurations, and the different molecular configurations respectively correspond to color intervals of different wavelengths.
In the embodiment of the present application, the array arrangement of the light emitting units refers to repeated arrangement according to a certain arrangement rule, and finally a pixel structure with a certain arrangement rule is formed, and the array arrangement is not only matrix arrangement.
That is, some or all of the light emitting units 431 include light emitting materials having the same molecular formula but different molecular configurations. Specifically, the light emitting unit 431 may include a first color light emitting unit, a second color light emitting unit, and a third color light emitting unit, where the first color has a center wavelength of λ1, the second color has a center wavelength of λ2, and the third color has a center wavelength of λ3, where λ1 > λ2 > λ3, and at least the second color light emitting unit and the third color light emitting unit are made of light emitting materials having the same molecular formula but different molecular configurations.
As one possible implementation manner, the materials of all the light emitting units 431 are light emitting materials with the same molecular formula but different molecular configurations, that is, the materials of the light emitting units 431 are host structures with different molecular configurations and guest structures with unchanged molecular configurations, and three colors of light emission are realized by using the host structures with different molecular configurations and the guest structures with unchanged molecular configurations, that is, the light emission of the first color, the second color and the third color is simultaneously realized by using the same light emitting material.
As another possible implementation manner, the materials of the part of light emitting units 431 are light emitting materials with the same molecular formula but different molecular configurations, the materials of the other part of light emitting units 431 are light emitting materials with a first color, that is, the materials of the part of light emitting units 431 are main structures with different molecular configurations, the main structures with different molecular configurations are utilized to realize the light emission of two colors, the light emission of a second color and the light emission of a third color are realized, the materials of the other part of light emitting units 431 are light emitting materials with the first color, and the light emission of the first color is realized.
When different configurations of the main structure are realized, various molecular configurations of the main structure can be obtained by voltage curing. The molecular configuration of the main structure can be cured by using voltage, namely, the molecular configuration of the main structure is different under different voltages. After the voltage is applied to the host structure, the molecular configuration of the host structure is determined, and even if the applied voltage is removed, the molecular configuration of the host structure is not changed, that is, the molecular configuration of the host structure is not changed after the voltage is applied, so that the molecular configuration can be maintained, long-term luminescence of a certain color can be realized, and the stability of the materials of the host structure and the guest structure serving as luminescent materials of the display panel is higher.
If the luminescent materials with the same molecular formula but different molecular configurations are adopted, the luminescent materials are all prepared by adopting a one-time vapor deposition process when the luminescent unit is manufactured by the luminescent materials.
As an example, the materials of all the light emitting units 431 are light emitting materials with the same molecular formula but different molecular configurations, and the light emitting materials are prepared by a single evaporation process, and then the different molecular configurations are cured by different voltages, so as to finally obtain the light emitting units with different colors.
Compared with the method for forming the light-emitting units with three colors by utilizing three vapor deposition processes, the method has the advantages that the manufacturing flow of the light-emitting units is greatly simplified by utilizing one process, and the manufacturing cost of the display panel is further reduced.
When the light-emitting unit is manufactured by utilizing the vapor deposition process, the common mask plate common mask can be used for realizing one-time vapor deposition of the light-emitting material, and the full-open precision mask plate fine mask can also be used for realizing one-time vapor deposition of the light-emitting material.
In the embodiment of the present application, the substrate may be a substrate with thin film transistors distributed in an array, where the array distribution rule of the thin film transistors is the same as that of the light emitting units, that is, the thin film transistors in the array substrate are in one-to-one correspondence with the light emitting units.
In an embodiment of the present application, referring to fig. 5, a schematic diagram of another display panel provided in an embodiment of the present application is shown. The light emitting functional layer 430 further includes a first carrier injection layer 510 and a first carrier transport layer 520 sequentially stacked between the first electrode 420 and the light emitting unit 431, and the first carrier injection layer 510 may be a hole injection layer, and the first carrier transport layer 520 may be a hole transport layer for providing holes for light emission to the light emitting unit 431, thereby improving light emitting effect.
The light emitting function layer 430 further includes a first carrier blocking layer 530, a second carrier transporting layer 540, and a second carrier injecting layer 550 sequentially stacked between the light emitting unit 431 and the second electrode 440, wherein the first carrier blocking layer 530 may be a hole blocking layer, the second carrier transporting layer 540 may be an electron transporting layer, and the second carrier injecting layer 540 may be an electron injecting layer for providing electrons for light emission to the light emitting unit 431, thereby improving a light emitting effect.
The light emitting functional layer 430 further includes a microcavity adjustment layer 560 between the light emitting unit 431 and the first carrier transporting layer 520, the microcavity adjustment layer 560 including a plurality of microcavity adjustment regions 561, one light emitting device 431 for each microcavity adjustment region 561.
In the embodiment of the present application, the substrate 410 is an array substrate having a thin film transistor, and the thin film transistor corresponds to the light emitting unit 431 for providing driving for the display panel. An insulating layer may be further provided between the substrate 410 and the first electrode 420, and the substrate 410 and the first electrode 420 are electrically connected by a via contact penetrating the insulating layer.
Therefore, the display panel provided by the embodiment of the application comprises the substrate, the first electrode, the light-emitting functional layer and the second electrode which are arranged in a stacked manner, wherein the light-emitting functional layer comprises a plurality of light-emitting units which are arranged in an array manner, at least part of the light-emitting units comprise light-emitting materials with the same molecular formula but different molecular configurations, and the different molecular configurations respectively correspond to color intervals with different wavelengths. That is, the light-emitting material of a part of or all of the light-emitting units in the plurality of light-emitting units is at least one material with different molecular configurations, the different molecular configurations of the material correspond to at least two color intervals with different wavelengths, and the at least one material at least corresponds to the two color intervals with different wavelengths.
The embodiment of the application also provides a display device, which comprises the display panel described in the embodiment.
Referring to fig. 6, a schematic plan view of a display device according to an embodiment of the present application is shown. As can be seen, the display device 1000 includes the display panel 100, and the display panel 100 is the display panel 100 described in any of the above embodiments. The display device 1000 provided in the embodiment of the present application may be a mobile phone, a computer, a television, a vehicle-mounted display device, or other display devices with display functions, which is not specifically limited in the embodiment of the present application. The display device 1000 provided in the embodiment of the present application has the beneficial effects of the display panel 100 provided in the embodiment of the present application, and the specific description of the display panel in the above embodiment may be referred to specifically, and the embodiments of the present application are not repeated here.
Based on the semiconductor device provided in the above embodiments, the embodiments of the present application further provide an optical storage device, and the working principle thereof is described in detail below with reference to the accompanying drawings.
Referring to fig. 7, a block diagram of an optical storage apparatus according to an embodiment of the present application is shown.
The optical storage device provided in this embodiment includes a substrate base 710, a first electrode layer 720, a light emitting function layer 730, and a second electrode layer 740 that are stacked. The light emitting functional layer 730 includes a plurality of light emitting units 731 arranged in an array, where the light emitting units 731 include light emitting materials with the same molecular formula but adjustable molecular configuration, and the light emitting materials after being cured at least include two different molecular configurations, where the different molecular configurations respectively correspond to color intervals of different wavelengths.
In the embodiment of the present application, the array arrangement of the light emitting units refers to repeated arrangement according to a certain arrangement rule, and finally a pixel structure with a certain arrangement rule is formed, and the array arrangement is not only matrix arrangement.
Because the light-emitting unit comprises the material with adjustable molecular configuration, different molecular configurations can be solidified by different voltages, and each molecular configuration corresponds to one of the color intervals, the light-emitting unit can be used for realizing information storage of different colors, namely, the voltage solidification molecular configuration is used for realizing information storage of the color corresponding to the molecular configuration.
In particular, the light-emitting units can be set in color by using different voltages, the light-emitting units comprise the light-emitting materials with adjustable molecular configuration, and can emit light of at least 3 colors, namely each light-emitting unit can have at least 3 color choices and can store 3 pieces of information, so that the light storage device can store 3 pieces of information n N is the number of light emitting units. For the same number of light emitting units, compared with binary information amount 2 capable of being stored n The optical storage apparatus according to the embodiment of the present application can store information in binary (1.5) n Multiple times.
When the light-emitting functional layer in the optical storage device is manufactured, the light-emitting functional layer can be manufactured by utilizing a one-time evaporation process to evaporate the light-emitting materials with the same molecular formula but adjustable molecular configuration.
Based on the optical storage device provided by the above embodiments, the embodiments of the present application further provide a method for using the optical storage device, and the working principle of the optical storage device is described in detail below with reference to the accompanying drawings.
Referring to fig. 8, a flow chart of a method for using an optical storage apparatus according to an embodiment of the present application is shown.
The optical storage device in the use method of the optical storage device provided by the embodiment of the application is the optical storage device provided by the embodiment, and the method includes the following steps:
s101, acquiring color information on each light-emitting unit according to the content required to be displayed.
In the embodiment of the present application, color information on each light emitting unit may be obtained according to content to be displayed in practice, that is, a color information distribution condition in the light emitting functional layer may be obtained, where the color information corresponds to specific content to be displayed, and the color information is a corresponding display color.
As an example, the first light emitting unit corresponds to a first color, the second light emitting unit corresponds to a second color, the third light emitting unit corresponds to a third color, the first color has a center wavelength of λ1, the second color has a center wavelength of λ2, and the third color has a center wavelength of λ3, wherein λ1 > λ2 > λ3.
S102, according to the color information, performing color curing on each light-emitting unit by using different voltages.
In the embodiment of the present application, after the color information of each light emitting unit is obtained, each light emitting unit may be color-cured using a different voltage.
That is, each light emitting unit has a color information, a molecular configuration of a light emitting material of the light emitting unit is determined according to the color information, and the light emitting unit is color-cured by a voltage corresponding to the molecular configuration.
As an example, the first light emitting unit corresponds to a first color, the first color corresponds to a first molecular configuration, and the first light emitting unit is color-cured with a voltage corresponding to the first molecular configuration.
In the embodiment of the present application, according to the content to be displayed, color information on each light emitting unit can be obtained, for example, the first light emitting unit corresponds to a first color, the second light emitting unit corresponds to a second color, the third light emitting unit corresponds to a third color, and the like, where the molecular configuration of each light emitting unit is not cured, and the color corresponding to each light emitting unit is the color to be stored in the light emitting unit, so that the light emitting unit can display the stored color subsequently.
After obtaining the color information to be stored of each light-emitting unit, performing color curing on the molecular configuration of the light-emitting unit by using a corresponding voltage so as to realize the storage of the light-emitting unit for the color, wherein the molecular configuration of the light-emitting unit is cured by the voltage and cannot be changed, and when the voltage is applied to the light-emitting unit again, the light-emitting unit emits the light of the color corresponding to the molecular configuration as the molecular configuration of the light-emitting unit is determined, so that the stored color is displayed so as to display the color information stored by the light-emitting unit to a user.
The foregoing is merely a preferred embodiment of the present application, and although the present application has been disclosed in the preferred embodiment, it is not intended to limit the present application. Any person skilled in the art may make many possible variations and modifications to the technical solution of the present application, or modify equivalent embodiments, using the methods and technical contents disclosed above, without departing from the scope of the technical solution of the present application. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present application, which do not depart from the content of the technical solution of the present application, still fall within the scope of the technical solution of the present application.
Claims (13)
1. The semiconductor device is characterized by comprising a substrate, a first electrode, a functional layer and a second electrode which are arranged in a stacked manner, wherein the functional layer at least comprises a luminescent material with an adjustable molecular configuration, and different molecular configurations correspond to at least two color intervals with different wavelengths;
the luminescent material comprises a host structure with adjustable molecular configuration and a guest structure with unchanged molecular configuration.
2. The semiconductor device of claim 1, wherein a molecular configuration of the host structure is cured using a voltage.
3. The semiconductor device according to claim 2, wherein the host structure comprises a compound X including a planar group a and a planar group B bonded to each other, and wherein a dihedral angle θ between the planar group a and the planar group B is different after curing at different voltages.
4. The semiconductor device according to claim 3, wherein a center wavelength of the first color is λ1, a center wavelength of the second color is λ2, and a center wavelength of the third color is λ3, wherein λ1 > λ2 > λ3;
the dihedral angle theta corresponding to the first color 1 The method meets the following conditions: θ 1 ＜15°；
The dihedral angle theta corresponding to the second color 2 The method meets the following conditions: theta is less than 30 DEG 2 ＜70°；
The dihedral angle theta corresponding to the third color 3 The method meets the following conditions: 80 DEG < theta 3 ＜90°。
5. A semiconductor device according to claim 3, characterized in that the planar group a is a pyridine group and/or the planar group B is a carbazole group.
6. The display panel is characterized by comprising a substrate base plate, a first electrode layer, a light-emitting functional layer and a second electrode layer which are arranged in a stacked mode, wherein the light-emitting functional layer comprises a plurality of light-emitting units which are arranged in an array mode, at least part of the light-emitting units comprise light-emitting materials with the same molecular formula but different molecular configurations, the different molecular configurations respectively correspond to color intervals of different wavelengths, and the light-emitting materials comprise a host structure with an adjustable molecular configuration and a guest structure with a unchanged molecular configuration.
7. The display panel of claim 6, wherein the molecular configuration of the host structure is cured with a voltage.
8. The display panel according to claim 6, wherein the light-emitting units made of the light-emitting material are each prepared by a one-time vapor deposition process.
9. The display panel according to claim 6, wherein the light emitting unit includes a first color light emitting unit, a second color light emitting unit, and a third color light emitting unit, the first color having a center wavelength λ1, the second color having a center wavelength λ2, and the third color having a center wavelength λ3, wherein λ1 > λ2 > λ3;
at least the second color light emitting unit and the third color light emitting unit are prepared using the light emitting material.
10. A display device comprising a display panel as claimed in any one of claims 6-9.
11. The light storage device is characterized by comprising a substrate base plate, a first electrode layer, a light-emitting functional layer and a second electrode layer which are arranged in a stacked mode, wherein the light-emitting functional layer comprises a plurality of light-emitting units which are arranged in an array mode, each light-emitting unit comprises a light-emitting material with an adjustable molecular configuration, the light-emitting material at least comprises two different molecular configurations after being solidified, and the light-emitting material comprises a host structure with the adjustable molecular configuration and a guest structure with the unchanged molecular configuration.
12. The optical storage device according to claim 11, wherein the light emitting functional layer is prepared by a one-time evaporation process.
13. A method of using an optical storage apparatus as claimed in claim 11, the method comprising:
acquiring color information on each light-emitting unit according to the content to be displayed;
and according to the color information, performing color curing on each light-emitting unit by using different voltages.
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