CN210323689U - Composite quantum dot film layer and display device - Google Patents
Composite quantum dot film layer and display device Download PDFInfo
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- CN210323689U CN210323689U CN201921555631.4U CN201921555631U CN210323689U CN 210323689 U CN210323689 U CN 210323689U CN 201921555631 U CN201921555631 U CN 201921555631U CN 210323689 U CN210323689 U CN 210323689U
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Abstract
The utility model provides a compound quantum dot rete still provides a display device who contains this compound quantum dot rete. The composite quantum dot film layer comprises: a quantum dot film including a light conversion unit disposed therein to change a color of light passing through the quantum dot film by the light conversion unit; the metal photon unit is arranged on the quantum dot film and corresponds to the light conversion unit to be used for filtering light and enabling the light to have polarization characteristics, the metal photon unit is arranged on the quantum dot film, the light conversion unit corresponds to the metal photon unit, light emitted by the quantum dot film can have polarization effects after passing through the metal photon unit, the composite quantum dot film layer has polarization and light conversion functions, when the composite quantum dot film layer is applied to a display device, a front polarizer can be omitted, light absorption loss of the polarizer is reduced, light emitting brightness is improved, the thickness of a display panel is reduced, integration level is improved, and cost is reduced.
Description
Technical Field
The utility model relates to a liquid crystal display technology field, concretely relates to compound quantum dot rete and display device.
Background
With the continuous development of display technology, people have higher and higher requirements on the display quality of display devices. Quantum Dots (QDs) are generally spherical or quasi-spherical semiconductor nanoparticles composed of elements of groups II-VI or III-V, and have a particle size generally ranging from a few nanometers to several nanometers. Due to the fact that the particle size of the quantum dots is smaller than or close to the exciton Bohr radius of the corresponding bulk material, a quantum confinement effect is generated, the energy level structure of the quantum dots is changed from quasi-continuous of the bulk material to discrete structure of the quantum dot material, and the quantum dots are caused to show special stimulated radiation luminescence performance. With the reduction of the size of the quantum dot, the energy level band gap of the quantum dot is increased, the energy required by the corresponding quantum dot to be excited and the energy released by the quantum dot to return to the ground state after being excited are correspondingly increased, the phenomena of excitation of the quantum dot and blue shift of a fluorescence spectrum are shown, and the size of the quantum dot is controlled to enable the luminescence spectrum to cover the whole visible light region.
Currently, a blue light backlight source and a quantum dot film are a way to realize full-color display, and as shown in fig. 1, a display device using a quantum dot film is currently used. However, the current display device has problems that, on one hand, the conventional polarizer causes light absorption loss of approximately 1/2; on the other hand, the polarizer also increases the thickness of the display panel, and the cost is correspondingly increased.
SUMMERY OF THE UTILITY MODEL
Therefore, the to-be-solved technical problem of the utility model lies in overcoming attached polaroid around the display device needs among the prior art, light loss is big, thickness increases, defect with high costs to provide one kind and can save preceding polaroid, light loss is little, thickness is little, with low costs have polarization and light conversion function's compound quantum dot rete and display device simultaneously.
Therefore, the utility model provides a composite quantum dot rete, include:
a quantum dot film including a light conversion unit disposed therein to change a color of light passing through the quantum dot film by the light conversion unit;
and the metal photon unit is arranged on the quantum dot film and corresponds to the light conversion unit so as to be used for filtering light and enabling the light to have polarization characteristics.
The light conversion unit comprises a red light subunit for emitting red light, a green light subunit for emitting green light and a blue light subunit for emitting blue light.
The composite quantum dot film layer, the metal photonic unit includes the metal photonic crystal, the metal photonic crystal including arrange in proper order in first metal photonic crystal, second metal photonic crystal and third metal photonic crystal on quantum dot film one side, first metal photonic crystal set up in on the red photonic unit, the second metal photonic crystal set up in on the green photonic unit, the third metal photonic crystal set up in on the blue photonic unit.
The composite quantum dot film layer further comprises isolation units arranged at the junction of the red photonic unit and the green photonic unit and the junction of the green photonic unit and the blue photonic unit and used for preventing light leakage between adjacent metal photonic crystals, and the isolation units form an isolation matrix.
The metal photonic crystal is a columnar body, the columnar body is vertical to the quantum dot film, and the height of the columnar body is 10-500 nm;
the isolation unit is an opaque reflecting plate, the opaque reflecting plate is perpendicular to the quantum dot film, and the height of the opaque reflecting plate is not less than that of the columnar body.
The metal photonic crystal is made of gold, silver or aluminum.
The metal photonic crystal is located at the middle position of the adjacent isolation unit.
The thickness of the composite quantum dot film layer is 300-400 mu m.
The utility model provides a display device, include compound quantum dot rete.
The display device also comprises a display panel and a backlight source arranged on one side of the display panel;
the display panel comprises a first substrate, a second substrate and a liquid crystal layer arranged between the first substrate and the second substrate;
the first substrate comprises a first substrate and the composite quantum dot film layer arranged on the first substrate;
the second substrate comprises a second base and a polarizer arranged on the second base.
In the display device, in the composite quantum dot film layer, the light conversion unit of the quantum dot film corresponds to each pixel of the liquid crystal layer.
In the display device, the backlight source is a blue backlight source.
The utility model discloses technical scheme has following advantage:
1. the utility model provides a pair of compound quantum dot rete, include: a quantum dot film including a light conversion unit disposed therein to change a color of light passing through the quantum dot film by the light conversion unit; the metal photon unit is arranged on the quantum dot film and corresponds to the light conversion unit to be used for filtering and enabling light to have polarization characteristics, the metal photon unit is arranged on the quantum dot film, the light conversion unit of the quantum dot film corresponds to the metal photon unit one to one, so that light emitted by the quantum dot film has polarization effects after passing through the metal photon unit, the composite quantum dot film has polarization and light conversion functions, when the composite quantum dot film is applied to a liquid crystal display device, the front polarizer can be omitted, the front polarizer and the quantum dot film are combined into one, the light absorption loss of the polarizer is reduced, the light brightness is improved, the thickness of a display panel is reduced, the integration level is improved, and the cost is reduced.
2. The utility model provides a pair of compound quantum dot rete, the light conversion unit includes the ruddiness subunit of emergent red light, the green glow subunit of emergent green glow and the blue light subunit of emergent blue light, because quantum dot stimulated emission back, can give out light, and luminous colour is relevant with the particle size of quantum dot material, divide into red light subunit, green glow subunit and blue light subunit through the light conversion unit with the quantum dot membrane, can set up or not set up the quantum dot material of corresponding particle diameter in corresponding subunit, thereby make three subunit respectively emergent red light, green glow and blue light, thereby realize full-color display.
3. The utility model provides a pair of compound quantum dot rete, the metal photonic unit includes the metal photonic crystal, the metal photonic crystal including arrange in proper order in first metal photonic crystal, second metal photonic crystal and third metal photonic crystal on quantum dot membrane one side, first metal photonic crystal set up in on the red photonic unit, second metal photonic crystal set up in on the green photonic unit, third metal photonic crystal set up in on the blue light subunit, corresponding through with three metal photonic crystal and ruddiness subunit, green glow subunit and blue light subunit, can make three metal photonic crystal correspond and filter red, green, blue three-colour spectrum, make light have polarization characteristic simultaneously.
4. The utility model provides a pair of compound quantum dot rete still includes the isolation unit, sets up in the juncture of red photonic unit and green glow subunit and the juncture of green glow subunit and blue light subunit for prevent the light leak between the adjacent metal photonic crystal, a plurality of isolation unit components keep apart the matrix, through setting up the isolation unit, can prevent the light leak between the adjacent metal photonic crystal, influence the display effect.
5. The utility model provides a composite quantum dot film layer, the metal photonic crystal is a columnar body, the columnar body is vertical to the quantum dot film, and the height is 10-500 nm; the isolation unit is an opaque reflecting plate, the opaque reflecting plate is perpendicular to the quantum dot film, and the height of the opaque reflecting plate is not less than that of the columnar body. The metal photonic crystal is arranged into a columnar body, the height of the metal photonic crystal is limited, light in a specific polarization state can be ensured to be emitted out of the metal photonic crystal, and the thickness of the display panel can be greatly reduced and the integration level is improved due to the height of the metal photonic crystal being 10-500 nm; through setting up the isolation unit into the height of the opaque reflecting plate, and the height of the opaque reflecting plate is not less than the height of the columnar body, the isolation effect can be guaranteed, and light leakage between adjacent metal photonic crystals is prevented, so that the display effect is influenced.
6. The utility model provides a pair of display device, include compound quantum dot rete, through set up compound quantum dot rete in this display device, can unite two into one polaroid and quantum dot membrane, have polarization and light conversion's function simultaneously, can save a polaroid, reduce the light absorption loss of polaroid, improve light-emitting brightness, reduce the thickness of display panel, improve display device's integrated level, reduce cost.
7. The utility model provides a pair of display device, in the compound quantum dot rete, the light conversion unit of quantum dot membrane with each pixel of liquid crystal layer is corresponding, and light outgoing can be controlled through controlling the liquid crystal layer through the light conversion unit with the quantum dot membrane corresponding with each pixel of liquid crystal layer to the light conversion of control quantum dot membrane reaches the luminous purpose of control quantum dot membrane.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of a display device according to the prior art;
fig. 2 is a side view of the composite quantum dot film layer of the present invention;
fig. 3 is a top view of the composite quantum dot film layer of the present invention;
fig. 4 is a schematic structural diagram of a display device according to the present invention;
description of reference numerals:
1-a quantum dot film; 2-a metal photonic unit; 3-a light conversion unit; 4-a red subunit; 5-green subunit; 6-a blue subunit; 7-an isolation unit; 8-a display panel; 9-a backlight source; 10-a first substrate; 11-a second substrate; 12-a liquid crystal layer; 13-a first substrate; 14-a second substrate; 15-a polarizer; 16-a first metal photonic crystal; 17-a second metal photonic crystal; 18-third metal photonic crystals.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 2-3, a composite quantum dot film layer includes:
a quantum dot film 1, the quantum dot film 1 including a light conversion unit 3 disposed therein to change a color of light passing through the quantum dot film 1 by the light conversion unit 3; the light conversion unit 3 includes a red light subunit 4 for emitting red light, a green light subunit 5 for emitting green light, and a blue light subunit 6 for emitting blue light, the thickness of the quantum dot film 1 is 300-400 μm, and in this embodiment, the thickness of the quantum dot film 1 is 350 μm. Because quantum dot can give out light after the excitation, and the colour of giving out light is relevant with the particle size of quantum dot material, through divide into red photonic unit 4, green glow subunit 5 and blue light subunit 6 with the light conversion unit 3 of quantum dot film 1, can set up or not set up the quantum dot material of corresponding particle diameter in corresponding subunit to make three subunits emit ruddiness, green glow and blue light respectively, thereby realize full-color display.
And the metal photon units 2 are arranged on the quantum dot film 1, and each metal photon unit 2 corresponds to one light conversion unit 3. Each metal photonic unit 2 comprises a metal photonic crystal, the metal photonic crystal comprises a first metal photonic crystal 16, a second metal photonic crystal 17 and a third metal photonic crystal 18 which are sequentially arranged on one side of the quantum dot film 1, the first metal photonic crystal 16 is arranged on the red photonic unit 4, the second metal photonic crystal 17 is arranged on the green photonic unit 5, and the third metal photonic crystal 18 is arranged on the blue photonic unit 6. The metal photonic crystal is a columnar body, the columnar body is vertical to the quantum dot film 1, the height is 10-500nm, and the metal photonic crystal is made of gold, silver or aluminum. In this embodiment, the metal photonic crystal is made of aluminum having a height of 250 nm. By corresponding the three metal photonic crystals to the red light subunit 4, the green light subunit 5 and the blue light subunit 6, the three metal photonic crystals can correspondingly filter the red, green and blue light spectrums, and meanwhile, the light has the polarization characteristic. The metal photonic crystal is arranged into a columnar body, the height of the metal photonic crystal is limited, light in a specific polarization state can be ensured to be emitted out of the metal photonic crystal, and the height of the metal photonic crystal is limited to be 10-500nm, so that the thickness of a display panel can be greatly reduced, and the integration level is improved.
The metal photonic unit 2 further comprises isolation units 7 arranged at the junction of the red photonic unit 4 and the green photonic unit 5 and the junction of the green photonic unit 5 and the blue photonic unit 6 and used for preventing light leakage between adjacent metal photonic crystals, the isolation units 7 form an isolation matrix, and the metal photonic crystals are located in the middle of the adjacent isolation units 7. The isolation unit 7 is an opaque reflector perpendicular to the quantum dot film 1, and the height of the opaque reflector is not less than that of the columnar body. In this embodiment, the height of the opaque reflector is the same as the height of the pillar. By arranging the isolation unit, light leakage between adjacent metal photonic crystals can be prevented. Through setting up the isolation unit into the height of the opaque reflecting plate, and the height of the opaque reflecting plate is not less than the height of the columnar body, the isolation effect can be guaranteed, and light leakage between adjacent metal photonic crystals is prevented, so that the display effect is influenced.
As shown in fig. 3, a display device includes the composite quantum dot film layer, and further includes a display panel 8 and a backlight 9 disposed on one side of the display panel 8; the display panel 8 includes a first substrate 10, a second substrate 11, and a liquid crystal layer 12 disposed between the first substrate 10 and the second substrate 11; the first substrate 10 includes a first substrate 13, and the composite quantum dot film layer disposed on the first substrate 13; the second substrate 11 includes a second base 14, and a polarizer 15 disposed on the second base 14. In this embodiment, the first substrate 13 and the second substrate 14 are both glass plates, but the first substrate 13 and the second substrate 14 may be made of other light-transmitting materials as alternative embodiments. The backlight 9 is a blue backlight. Through setting up compound quantum dot rete in this display device, because this rete unites two into one polaroid and quantum dot membrane, has polarization and light conversion's function simultaneously, can save a polaroid, reduce the light absorption loss of polaroid, improve light-emitting luminance, reduce display panel thickness, improve display device's integrated level, reduce cost.
In the composite quantum dot film layer, the light conversion unit 3 of the quantum dot film 1 corresponds to each pixel of the liquid crystal layer 12. By making the light conversion unit 3 of the quantum dot film 1 correspond to each pixel of the liquid crystal layer 12, the light emission can be controlled by controlling the liquid crystal layer, thereby controlling the light conversion of the quantum dot film and achieving the purpose of controlling the light emission of the quantum dot film.
When the composite quantum dot film is used, the backlight source 9 emits blue light, the light emitting condition of each pixel in the liquid crystal layer 12 can be controlled by controlling the liquid crystal form of each pixel in the liquid crystal layer 12, when the emitted blue light reaches the quantum dot film 1 of the composite quantum dot film layer, the blue light irradiates the red light subunit 4, the quantum dot material in the red light subunit is excited by the blue light to emit red light, when the blue light irradiates the green light subunit 5, the quantum dot material in the green light subunit is excited by the blue light to emit green light, and when the blue light irradiates the blue light subunit 6, the blue light subunit 6 does not contain the quantum dot material and is only a transparent material, so the blue light passes through and still emits the blue light. When light of different colors passes through the metal photonic unit 2, since each unit includes three metal photonic crystals, light can be filtered through three color spectrums of red, green and blue, and simultaneously has polarization characteristics. Since the light conversion unit 3 of the quantum dot film 1 corresponds to each pixel of the liquid crystal layer 12, and each metal photonic unit 2 corresponds to each light conversion unit 3, the light emission of each light conversion unit 3 of the quantum dot film 1 can be controlled by controlling each pixel of the liquid crystal layer 12, so that the light passing through the metal photonic unit 2 can be controlled.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. A composite quantum dot film layer, comprising:
a quantum dot film (1), the quantum dot film (1) comprising a light conversion unit (3) disposed therein to change a color of light passing through the quantum dot film (1) by the light conversion unit (3);
and the metal photon units (2) are arranged on the quantum dot film (1) and correspond to the light conversion units (3) so as to be used for filtering light and enabling the light to have polarization characteristics.
2. The composite quantum dot film layer of claim 1, wherein the light conversion unit (3) comprises a red subunit (4) emitting red light, a green subunit (5) emitting green light, and a blue subunit (6) emitting blue light.
3. The composite quantum dot film layer of claim 2, wherein the metal photonic unit (2) comprises a metal photonic crystal, the metal photonic crystal comprises a first metal photonic crystal (16), a second metal photonic crystal (17) and a third metal photonic crystal (18) sequentially arranged on one side of the quantum dot film (1), the first metal photonic crystal (16) is disposed on the red photonic unit (4), the second metal photonic crystal (17) is disposed on the green photonic unit (5), and the third metal photonic crystal (18) is disposed on the blue photonic unit (6).
4. The composite quantum dot film layer of claim 3, further comprising isolation units (7) disposed at the junctions of the red photonic unit (4) and the green photonic unit (5) and the junctions of the green photonic unit (5) and the blue photonic unit (6) for preventing light leakage between adjacent metal photonic crystals, wherein the isolation units (7) form an isolation matrix.
5. The composite quantum dot film layer of claim 4, wherein the metal photonic crystal is a columnar body perpendicular to the quantum dot film (1) and having a height of 10-500 nm;
the isolation unit (7) is an opaque reflecting plate, the opaque reflecting plate is perpendicular to the quantum dot film (1), and the height of the opaque reflecting plate is not less than that of the columnar body.
6. The composite quantum dot film layer of claim 4, wherein the metal photonic crystal is located at an intermediate position adjacent to the isolation unit (7).
7. The composite quantum dot film layer of any of claims 1-6, wherein the thickness of the quantum dot film (1) is 300-400 μm.
8. A display device comprising the composite quantum dot film layer of any one of claims 1 to 7.
9. The display device according to claim 8, further comprising a display panel (8) and a backlight (9) provided on one side of the display panel (8);
the display panel (8) comprises a first substrate (10), a second substrate (11) and a liquid crystal layer (12) arranged between the first substrate (10) and the second substrate (11);
the first substrate (10) comprises a first substrate (13), and a composite quantum dot film layer of any one of claims 1-7 disposed on the first substrate (13);
the second substrate (11) comprises a second base (14) and a polarizer (15) arranged on the second base (14).
10. The display device according to claim 9, wherein the light conversion unit (3) of the quantum dot film (1) corresponds to each pixel of the liquid crystal layer (12) in the composite quantum dot film layer.
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| CN201921555631.4U CN210323689U (en) | 2019-09-18 | 2019-09-18 | Composite quantum dot film layer and display device |
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| CN201921555631.4U CN210323689U (en) | 2019-09-18 | 2019-09-18 | Composite quantum dot film layer and display device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021233104A1 (en) * | 2020-05-22 | 2021-11-25 | 北京芯海视界三维科技有限公司 | Light-emitting module, display module, display screen and display |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021233104A1 (en) * | 2020-05-22 | 2021-11-25 | 北京芯海视界三维科技有限公司 | Light-emitting module, display module, display screen and display |
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Address after: 215300, 188, Feng Feng Road, hi tech Zone, Kunshan, Jiangsu, Suzhou Patentee after: Suzhou Qingyue Photoelectric Technology Co., Ltd Address before: 215300, 188, Feng Feng Road, hi tech Zone, Kunshan, Jiangsu, Suzhou Patentee before: Kunshan Visionox Technology Co.,Ltd. |