CN214896088U - Display device - Google Patents
Display device Download PDFInfo
- Publication number
- CN214896088U CN214896088U CN202023319120.8U CN202023319120U CN214896088U CN 214896088 U CN214896088 U CN 214896088U CN 202023319120 U CN202023319120 U CN 202023319120U CN 214896088 U CN214896088 U CN 214896088U
- Authority
- CN
- China
- Prior art keywords
- quantum rod
- display device
- quantum
- axis direction
- display panel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Liquid Crystal (AREA)
Abstract
The utility model relates to a show technical field, disclose a display device. The display device comprises a view field regulation layer, wherein the view field regulation layer is provided with a quantum rod film and a transparent conducting layer which are arranged in a laminated mode; the transparent conducting layer comprises a plurality of transparent electrodes arranged at intervals, the quantum rod film comprises a plurality of quantum rods arranged regularly, and the long axis direction of each quantum rod is parallel to the extending direction of the display panel; the quantum rod can realize deflection under the action of an electric field formed by the transparent electrode, so that the field control layer can realize partial light transmission or whole light transmission. The utility model provides a display device sets up the visual field regulation and control layer that has quantum stick and transparent conducting layer in its display panel's light-emitting side, through the electric field control quantum stick's that transparent conducting layer formed direction of deflecting to realize the local printing opacity or the whole face printing opacity on visual field regulation and control layer, can realize two visual fields and the free switching of full visual field.
Description
Technical Field
The utility model belongs to the technical field of the display technology and specifically relates to a display device is related to.
Background
A Liquid Crystal Display (LCD) has many advantages such as a thin body, power saving, and no radiation, and is widely used. However, as socioeconomic and scientific technologies advance, people want to see different images by watching the same display device at different angles. For example, when the display device is used in a car, it is desirable that the passenger side can see the movie picture, and the driver side can see the navigation picture, so that the display device which can only see the same display picture from different angles cannot meet the requirements of viewers from different angles.
The prior art has the following solving methods: 1. a plurality of display devices are used, but the cost is greatly increased; 2. the prism grating layer or other grating structures are added, but the thickness of the display device is increased, the display device is only suitable for left and right display, cannot be viewed at the middle position, and cannot realize free switching between double fields of view and full fields of view.
SUMMERY OF THE UTILITY MODEL
The utility model provides a display device to solve and show single problem, can realize two visual fields and full visual field freely switching.
The embodiment of the utility model provides a display device, including display panel and the backlight unit that is located display panel income light side, display device still includes the visual field regulation and control layer that is located display panel light-emitting side, the visual field regulation and control layer has quantum stick film and the transparent conducting layer of range upon range of setting;
the transparent conducting layer comprises a plurality of transparent electrodes arranged at intervals, the quantum rod film comprises a plurality of quantum rods arranged in an oriented mode, and the long axis direction of each quantum rod is parallel to the extending direction of the display panel;
the quantum rods in the quantum rod film can deflect under the action of an electric field formed by the transparent electrode, so that the view field regulation and control layer can realize local light transmission or whole light transmission.
Further, the transparent conducting layer is located between the quantum rod film and the display panel, and the transparent electrode is a strip electrode and independently supplies power.
Furthermore, the display device further comprises a first polarizer located on one side of the display panel close to the viewing field control layer and a second polarizer located on one side of the display panel close to the backlight module, and the transmission axis direction of the first polarizer is perpendicular to the transmission axis direction of the second polarizer.
Further, in an initial state, a long axis direction of the quantum rod is parallel to a transmission axis direction of the first polarizer, or the long axis direction of the quantum rod is parallel to a transmission axis direction of the second polarizer.
Further, the length direction of the transparent electrode is parallel to the long axis direction of the quantum rod in the initial state.
Further, the quantum rod is any one of cadmium selenide, mercury selenide, zinc selenide, cadmium telluride, zinc telluride, cadmium sulfide, zinc oxide and cadmium zinc selenide or a combination of at least two of the cadmium selenide, the mercury selenide, the zinc selenide, the cadmium telluride, the zinc telluride, the cadmium sulfide, the zinc oxide and the cadmium zinc selenide.
Further, the quantum rod includes a red quantum rod, a green quantum rod, and a blue quantum rod.
Further, the transparent electrode is ITO.
Further, the quantum rod film further comprises a substrate, an orientation layer and a liquid crystal polymer; the alignment layer is arranged on the substrate and comprises a plurality of grooves which are arranged in parallel and have the same extending direction, the liquid crystal polymer molecules are arranged along the extending direction of the grooves, and the quantum rods are arranged in an alignment mode under the action force of the liquid crystal polymer molecules.
Further, the long axis direction of the quantum rod is parallel or perpendicular to the extending direction of the liquid crystal polymer molecules.
The utility model provides a display device, the light-emitting side at its display panel sets up the visual field regulation and control layer that has quantum stick and transparent conducting layer, the direction of deflection of the electric field control quantum stick through transparent conducting layer formation, with local printing opacity or the whole face printing opacity that realizes visual field regulation and control layer, so that display device can realize different visual field modes, for current grating structure, not only can realize two visual field display modes, can also realize two visual fields and the free switching of full visual field, but also can promote and show luminance.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:
fig. 1 is a schematic partial cross-sectional view of a display device according to an embodiment of the present invention;
fig. 2 is a schematic partial cross-sectional view of a quantum rod thin film in a display device according to an embodiment of the present invention;
fig. 3 is a schematic cross-sectional view of a view field control layer of a display device in a first view field mode according to an embodiment of the present invention;
fig. 4 is a schematic diagram illustrating an optical path effect of the display device in the first view field mode according to an embodiment of the present invention;
fig. 5 is a schematic diagram illustrating an optical path effect of the display device in the second view field mode according to an embodiment of the present invention.
Detailed Description
In order to further explain the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, but not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Fig. 1 is a schematic partial cross-sectional view of a display device according to an embodiment of the present invention; fig. 2 is a schematic partial cross-sectional view of a quantum rod film in a display device according to an embodiment of the present invention.
As shown in fig. 1, the display device includes a viewing field control layer 20 and a display module 10, the display module 10 has a display panel and a backlight module 130 providing a light source for the display panel, the viewing field control layer 20 is located on a light emitting side of the display module 10, and the viewing field control layer can enable the display device to have different viewing field modes, so as to meet different image requirements of people on the display device. In this embodiment, the display panel is a liquid crystal display panel, and specifically, the liquid crystal display panel includes an array substrate 110, a color filter substrate, and a liquid crystal layer 120 sandwiched between the array substrate 110 and the color filter substrate, the color filter substrate further includes color filter layers 152 and black matrixes 151 arranged at intervals, the array substrate 110 is located on a side of the color filter substrate away from the viewing field control layer 20, and the array substrate 110 is located on a side of the color filter substrate close to the backlight module 130. The backlight module 130 may further include a prism structure for condensing and diffusing light emitted from the backlight source. Since the structure and the operation principle of each part in the liquid crystal display panel are known, they are not described herein again. In other embodiments, the display panel may be an organic light emitting diode display panel or a micro light emitting diode display panel.
Further, the viewing field control layer 20 includes a transparent conductive layer and a quantum rod film 220 which are stacked. In this embodiment, the transparent conductive layer is located between the quantum rod film 220 and the display module 10, but is not limited thereto, and the quantum rod film 220 may be located between the transparent conductive layer and the display module 10.
Further, the transparent conductive layer includes a plurality of transparent electrodes 210 disposed at intervals. In this embodiment, the transparent electrodes 210 are strip-shaped electrodes, and in order to better form a local electric field, each transparent electrode 210 is independently controlled to supply power, so that whether to apply voltage to any transparent electrode 210 in the transparent conductive layer can be selected by controlling according to needs. Preferably, the transparent electrode 210 is made of an ITO (Indium Tin Oxide) material.
The field control layer 20 can be partially transparent or entirely transparent under the action of an electric field, so that the display device can realize different field modes (for example, dual-field display or full-field display).
As shown in fig. 1, in this embodiment, the quantum rod film 220 includes a plurality of quantum rods 224 arranged in an orientation, and a long axis direction of each quantum rod 224 is parallel to an extending direction of the display panel. In this embodiment, the quantum rod 224 has polarization characteristics: because the nanocrystals of the quantum rod are rod-shaped and have linear polarization along the length direction of the quantum rod molecules, the quantum rod contains charged group modifications (carbonyl, carboxyl, alkyl and the like); furthermore, the quantum rod can also be rotated (or deflected) by the electric field. In the present embodiment, the quantum rod 224 can deflect under the effect of the electric field formed by the transparent electrode 210, so that the field control layer can realize partial light transmission or whole light transmission. Preferably, the quantum rod 224 may include a red quantum rod, a green quantum rod, and a blue quantum rod, and the quantum rod 224 may be any one of cadmium selenide, mercury selenide, zinc selenide, cadmium telluride, zinc telluride, cadmium sulfide, zinc oxide, cadmium zinc selenide, or a combination of at least two thereof.
Further, as shown in fig. 2, the quantum rod film 220 may further include a substrate 221, an alignment layer 222, and a liquid crystal polymer 223. The alignment layer is disposed on the substrate 221, the alignment layer 222 includes a plurality of grooves arranged in parallel and extending in the same direction, the liquid crystal polymer 223 molecules are arranged along the extending direction of the grooves, and the quantum rods 224 are aligned under the action of the liquid crystal polymer 223 molecules. The long axis direction of the quantum rods 224 is parallel or perpendicular to the extending direction of the molecules of the liquid crystal polymer 223. For convenience of understanding, the manufacturing method of the quantum rod film can comprise the following steps:
s1: a substrate 221 is provided, and an alignment layer 222 is formed on the substrate 221. The material of the substrate 221 may be transparent glass, plastic, or the like.
S2: a plurality of grooves are formed in the alignment layer 222 to be aligned in parallel and extend in the same direction. Preferably, a plurality of grooves arranged in parallel and extending in the same direction may be formed on the alignment layer 222 using a physical alignment (e.g., a rubbing alignment) or a chemical alignment (e.g., a photo alignment).
S3: a coating layer having liquid crystal polymer 223 molecules and quantum rods 224 is coated on the alignment layer 222, the liquid crystal polymer 223 molecules in the coating layer are aligned along the extending direction of the grooves, and the quantum rods 224 in the coating layer are aligned by the force of the liquid crystal polymer 223 molecules. Specifically, due to the alignment effect of the alignment layer 222 on the liquid crystal polymer 223, the liquid crystal polymer 223 molecules may be aligned along the state of lowest energy, i.e., the liquid crystal polymer 223 molecules are aligned in order and in parallel along the extending direction of the grooves of the alignment layer 222. Meanwhile, the quantum rod 224 is acted by the end group of the liquid crystal polymer 223 molecule, which is specifically shown that the end group of the liquid crystal polymer 223 molecule has repulsive or attractive acting force to the quantum rod 224, and the quantum rod 224 is arranged along the extending direction of the liquid crystal polymer 223 molecule under the driving of the acting force; when the quantum rod 224 is affected by different molecules of the liquid crystal polymer 223, the long axis direction of the quantum rod 224 is perpendicular to the extending direction of the molecules of the liquid crystal polymer 223 under the driving of the acting force of the quantum rod 224.
S4: finally, the coating is subjected to a heating process to produce the quantum rod film 220.
Further, as shown in fig. 1, the display device further includes a first polarizer 140 located on a side of the display panel close to the viewing field control layer 20 and a second polarizer 160 located on a side of the display panel close to the backlight module 130, wherein a transmission axis direction of the first polarizer 140 is perpendicular to a transmission axis direction of the second polarizer 160. Specifically, the polarization angle of the first polarizer 140 is 90 °, the polarization angle of the second polarizer 160 is 0 °, or the polarization angle of the first polarizer 140 is 0 °, and the polarization angle of the second polarizer 160 is 90 °. It is understood that the transmission axis of each polarizer may be in other directions.
The long axis direction of the quantum rod 224 is parallel to the transmission axis direction of the first polarizer 140 in the initial state, or the long axis direction of the quantum rod 224 is parallel to the transmission axis direction of the second polarizer 160 in the initial state. For example, in the present embodiment, the polarization angle of the first polarizer 140 is 0 °, and the included angle between the long axis of the quantum rod 224 and the transmission axis of the first polarizer 140 is 90 °, or in other embodiments, the polarization angle of the second polarizer 160 may be 0 °, and the included angle between the long axis of the quantum rod 224 and the transmission axis of the second polarizer 160 is 90 °.
Further, in the present embodiment, the length direction of the transparent electrode 210 is parallel to the long axis direction of the quantum rod 224 in the initial state, but is not limited thereto.
For easy understanding, the principle of the display device provided by the present invention for realizing different view field modes is explained as follows with reference to fig. 1, 3 to 5:
(the display device in which the polarization angle of the first polarizer 140 is 0 DEG and the angle between the long axis of the quantum rod 224 and the transmission axis of the first polarizer 140 is 90 DEG in the initial state is exemplified as follows.)
Fig. 3 is a schematic partial cross-sectional view of a view field control layer of a display device in a first view field mode according to an embodiment of the present invention; fig. 4 is a schematic diagram illustrating an optical path effect of the display device in the first view field mode according to an embodiment of the present invention; fig. 5 is a schematic diagram illustrating an optical path effect of the display device in the second view field mode according to an embodiment of the present invention.
When the display mode of the display device is the first view field mode, as shown in fig. 3, the view field control layer 20 is divided into a plurality of transparent regions L and opaque regions B, the transparent regions L and the opaque regions B are disposed at intervals, and both the transparent regions L and the opaque regions B include transparent electrodes 210 and quantum rods 224, and preferably, the area of the transparent regions L is larger than that of the opaque regions B. Referring to fig. 3 and 4, when a voltage is applied to the transparent electrode 210 in the transparent region L and no voltage is applied to the transparent electrode 210 in the opaque region B, the transparent electrode 210 and the transparent electrode 210 applied with no voltage form a horizontal electric field, and the transparent electrode 210 applied with voltage and the electrode layer 170 on the display panel (the electrode layer 170 is a full-surface electrode) form a fringe electric field, so that the quantum rod 224 on the upper side of the transparent electrode 210 deflects along the electric field direction, light emitted from the display panel exits along the long axis direction of the quantum rod 224, the transparent electrode 210 in the opaque region B does not apply a voltage, the quantum rod 224 does not deflect, the long axis direction of the quantum rod 224 in the initial state is still perpendicular to the transparent axis direction of the first polarizer 140, and the quantum rod 224 in the opaque region B forms a shielding grating, the emergent light of the display panel cannot penetrate through the display panel, at the moment, the emergent light of the display panel can be emergent along the left direction and the right direction after passing through the view field regulation and control layer 20, the display device can display two different display pictures, namely, as shown in fig. 4, when a user is positioned on the left side of the display device, a first display picture can be observed by human eyes 30 of the user, when the user is positioned on the right side of the display device, another display picture can be observed by human eyes 30 of the user, and a first view field mode (also called as a double view field display mode) can be realized.
When the display mode of the display device is the second view field mode, as shown in fig. 5, at this time, voltages are applied to all the transparent electrodes 210 on the view field control layer 20 at intervals to form a horizontal electric field around the whole surface, the quantum rod 224 deflects along the direction of the horizontal electric field, so that the long axis direction of the quantum rod 224 is parallel to the transmission axis direction of the first polarizer 140, and the view field control layer 20 forms light transmission around the whole surface, and at this time, the display device is the second view field mode (which may also be referred to as an omnidirectional common view field display mode).
In the display device in other embodiments, in the initial state, the included angle between the long axis of the quantum rod 224 and the transmission axis of the first polarizer 140 is 0 °, and the omni-directional common viewing field display mode can be realized without applying a voltage to the transparent electrode 210, so that power consumption can be greatly reduced.
The utility model provides a display device sets up the visual field regulation and control layer that has quantum stick and transparent conducting layer in its display panel's light-emitting side, the direction of deflection of the electric field control quantum stick through transparent conducting layer formation to realize the local printing opacity or the whole face printing opacity on visual field regulation and control layer, so that display device can realize different visual field modes, for current grating structure, not only can realize two visual field display modes, can also realize two visual fields and the free switching of full visual field. But also can improve the display brightness.
The foregoing is a complete disclosure of the present invention, and in this specification, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, including other elements not expressly listed, in addition to those elements listed.
In the present specification, the terms of front, rear, upper, lower and the like are defined by the positions of the components in the drawings and the positions of the components relative to each other, and are only used for the sake of clarity and convenience in technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.
The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the principle of the present invention should be included within the protection scope of the present invention.
Claims (8)
1. A display device comprises a display panel and a backlight module positioned at the light incident side of the display panel, and is characterized by further comprising a view field regulation and control layer positioned at the light emergent side of the display panel, wherein the view field regulation and control layer is provided with quantum rod films and transparent conducting layers which are arranged in a laminated mode;
the transparent conducting layer comprises a plurality of transparent electrodes arranged at intervals, the quantum rod film comprises a plurality of quantum rods arranged in an oriented mode, and the long axis direction of each quantum rod is parallel to the extending direction of the display panel;
the quantum rods in the quantum rod film can deflect under the action of an electric field formed by the transparent electrode, so that the view field regulation and control layer can realize local light transmission or whole light transmission.
2. The display device according to claim 1, wherein the transparent conductive layer is located between the quantum rod film and the display panel, and the transparent electrodes are stripe electrodes and are individually powered.
3. The display device according to claim 2, further comprising a first polarizer disposed on a side of the display panel close to the viewing field control layer, and a second polarizer disposed on a side of the display panel close to the backlight module, wherein a transmission axis direction of the first polarizer is perpendicular to a transmission axis direction of the second polarizer.
4. The display device according to claim 3, wherein a long axis direction of the quantum rod is parallel to a transmission axis direction of the first polarizer or the long axis direction of the quantum rod is parallel to a transmission axis direction of the second polarizer in an initial state.
5. The display device according to claim 4, wherein a longitudinal direction of the transparent electrode is parallel to a long axis direction of the quantum rod in an initial state.
6. The display device according to claim 1, wherein the transparent electrode is ITO.
7. The display device according to any one of claims 1 to 6, wherein the quantum rod film further comprises a substrate, an alignment layer, and a liquid crystal polymer;
the alignment layer is arranged on the substrate and comprises a plurality of grooves which are arranged in parallel and have the same extending direction, the liquid crystal polymer molecules are arranged along the extending direction of the grooves, and the quantum rods are arranged in an alignment mode under the action force of the liquid crystal polymer molecules.
8. The display device according to claim 7, wherein a long axis direction of the quantum rod is parallel or perpendicular to an extending direction of the liquid crystal polymer molecule.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023319120.8U CN214896088U (en) | 2020-12-31 | 2020-12-31 | Display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023319120.8U CN214896088U (en) | 2020-12-31 | 2020-12-31 | Display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214896088U true CN214896088U (en) | 2021-11-26 |
Family
ID=78863151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023319120.8U Active CN214896088U (en) | 2020-12-31 | 2020-12-31 | Display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214896088U (en) |
-
2020
- 2020-12-31 CN CN202023319120.8U patent/CN214896088U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7812809B2 (en) | Display device and a method thereof | |
| US7940369B2 (en) | Stereoscopic image conversion panel and stereoscopic image display apparatus with liquid crystal lens having periodically fluctuating lower voltage applied to lower parallel electrodes and same voltage applied to upper parallel electrodes perpendicular to lower electrodes | |
| JP4249618B2 (en) | 3D electrophoresis display | |
| US8659739B2 (en) | Liquid crystal lens and display including the same | |
| CN210864261U (en) | Liquid crystal display panel and display device | |
| US7869113B2 (en) | Display device using electrochromism and methods of driving the same | |
| CN107450211B (en) | Gray scale control structure and method, liquid crystal display panel and display device | |
| JP5039055B2 (en) | Switchable autostereoscopic display device | |
| TW201305607A (en) | Liquid crystal lens and display including the same | |
| CN107632448B (en) | Display panel | |
| US20160004067A1 (en) | Display panel, manufacturing method thereof, and display device | |
| CN110764291A (en) | Display device capable of realizing visual angle switching and display method and manufacturing method thereof | |
| WO2018228047A1 (en) | Display device and method for driving same | |
| CN108549173A (en) | Backlight module, liquid crystal display device and driving method | |
| JP2009520230A (en) | Autostereoscopic display device | |
| CN214225625U (en) | Display device | |
| CN112987350B (en) | Display panel with switchable wide and narrow viewing angles and display device | |
| KR101686096B1 (en) | DUAL DISPLAY DEVICE and MANUFACTURING METHOD OF THE SAME | |
| CN110398864A (en) | A kind of display device and its driving method | |
| US10770668B2 (en) | Flexible fiber substrate and flexible display device including the same | |
| CN111308810A (en) | Display device and display | |
| US9041999B2 (en) | Electrowetting device and method of manufacturing the same | |
| CN111834548B (en) | Display panel and display device capable of switching narrow viewing angle | |
| CN214896088U (en) | Display device | |
| CN110764252B (en) | Transparent panel and naked eye three-dimensional display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |