CN110308552B - Dimming device and display assembly - Google Patents
Dimming device and display assembly Download PDFInfo
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- CN110308552B CN110308552B CN201910723261.9A CN201910723261A CN110308552B CN 110308552 B CN110308552 B CN 110308552B CN 201910723261 A CN201910723261 A CN 201910723261A CN 110308552 B CN110308552 B CN 110308552B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/0808—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more diffracting elements
Abstract
The embodiment of the invention provides a dimming device and a display assembly, relates to the technical field of display, and can adjust the light-emitting angle of light emitted from the dimming device. The dimming device includes: the light-dimming device comprises a bearing substrate and at least one light-dimming unit arranged on the bearing substrate; each of the dimming cells includes: the grating structure comprises a flexible substrate and a grating arranged on the flexible substrate; the dimming unit further includes: a support member and a drive member; the supporting component is used for supporting the flexible substrate and the optical grating, and the flexible substrate and the optical grating are extruded to bend and deform towards one side far away from the bearing base plate under the driving of the driving component.
Description
Technical Field
The invention relates to the technical field of display, in particular to a dimming device and a display assembly.
Background
Currently, various types of Display devices are gradually entering the market, such as Liquid Crystal Display (LCD), Organic Light-Emitting Diode (OLED) or Micro-LED (Light-Emitting Diode) Display devices.
With the rapid development of display technologies, the requirements of users on the performance of display devices are higher and higher, for example, the display devices are required to be capable of realizing the switching between 2D display and 3D display, the switching between peep-proof display and ordinary display, and the like.
Disclosure of Invention
Embodiments of the present invention provide a dimming device and a display module, which can adjust a light emitting angle of light emitted from the dimming device.
In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:
in one aspect, a dimming device is provided, including: the light-dimming device comprises a bearing substrate and at least one light-dimming unit arranged on the bearing substrate; each of the dimming cells includes: the grating structure comprises a flexible substrate and a grating arranged on the flexible substrate; the dimming unit further includes: a support member and a drive member; the supporting component is used for supporting the flexible substrate and the optical grating, and the flexible substrate and the optical grating are extruded to bend and deform towards one side far away from the bearing base plate under the driving of the driving component.
In some embodiments, the support member comprises at least one support post; the supporting columns are arranged between the bearing substrate and the flexible substrate; the supporting column moves along the direction from the bearing substrate to the flexible substrate under the driving of the driving part; alternatively, the length of the supporting columns in the direction from the bearing substrate to the flexible substrate is increased.
In some embodiments, the dimming unit further comprises: a plurality of fixing columns arranged between the flexible substrate and the bearing base plate; the fixed column is respectively fixedly connected with the flexible substrate and the bearing base plate; wherein, be provided with at least one support column between the adjacent fixed column.
In some embodiments, the surface of the support column near one end of the flexible substrate is a circular arc surface.
In some embodiments, the support member includes first and second sub-supports disposed opposite to each other; the first sub-supporting part and the second sub-supporting part are fixedly connected with the flexible substrate; the flexible substrate and the grating are arranged between the first sub-support part and the second sub-support part; or the flexible substrate and the grating are arranged on one sides of the first sub-supporting part and the second sub-supporting part far away from the bearing substrate; the first sub-supporting part is fixedly connected with the bearing substrate, and the second sub-supporting part moves along the direction close to the first sub-supporting part or deforms with width increasing along the direction close to the first sub-supporting part under the driving of the driving part; or, the first sub-support moves or deforms with an increasing width in a direction approaching the second sub-support under the driving of the driving part; the second sub-support portion moves in a direction approaching the first sub-support portion or is deformed to increase in width in the direction approaching the first sub-support portion by the driving of the driving member.
In some embodiments, the drive component comprises a micro-motor; the micro motor is connected with the supporting component and used for driving the supporting component to move so as to extrude the flexible substrate and the grating to bend and deform towards one side far away from the bearing substrate; or the material of the supporting part is an electro-deformation material, and the driving part comprises a first electrode and a second electrode which are oppositely arranged; the electric field generated by the first electrode and the second electrode is used for driving the supporting component arranged between the first electrode and the second electrode to deform so as to press the flexible substrate and the grating to bend and deform towards the side far away from the bearing substrate.
In some embodiments, the first electrode and the second electrode are both parallel to the carrier substrate; or, the first electrode and the second electrode are both perpendicular to the carrier substrate.
In some embodiments, in a case where the dimming cell includes a plurality of fixed posts, a first electrode and a second electrode perpendicular to the flexible substrate are disposed between adjacent fixed posts; the material of the fixed columns between the adjacent first electrodes comprises a body material and conductive particles doped in the body material.
In some embodiments, the dimming device further comprises: the transparent protective cover plate is arranged on one side, far away from the bearing substrate, of the dimming unit.
In some embodiments, the light modulation device further includes a circle of frame sealing glue disposed at an edge of the carrier substrate or the protection cover plate; the bearing substrate, the protective cover plate and the frame sealing glue form a sealed cavity; the dimming device further includes: a fill medium disposed within the sealed chamber; the refractive index of the filling medium is the same as that of the supporting component, and the refractive index of the filling medium is different from that of the grating.
In another aspect, a display module is provided, which includes a display panel and the above-mentioned light modulation device disposed on the light emitting side of the display panel.
The embodiment of the invention provides a dimming device and a display assembly. Each dimming unit comprises a flexible substrate and a grating arranged on the flexible substrate; the dimming unit further includes a supporting member and a driving member; the supporting component is used for supporting the flexible substrate and the optical grating, and the flexible substrate and the optical grating are extruded to bend and deform towards one side far away from the bearing base plate under the driving of the driving component. The driving component can drive the supporting component to extrude the flexible substrate and the grating to bend and deform towards one side far away from the bearing substrate, so that the grating is changed from a plane grating to a curved surface grating, incident light irradiates on the light adjusting device, and the light emitting angle of light emitted from the light adjusting device can be adjusted by adjusting the grating to be the plane grating or the curved surface grating and the bending degree of the curved surface grating.
On the basis, the embodiment of the invention adjusts the grating parameters by controlling the deformation of the grating in the dimming unit, and the grating is a fixed grating processed at one time, so the processing difficulty is greatly reduced, and the cost is saved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or technical solutions in related arts, the drawings used in the description of the embodiments or related arts will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a first schematic structural diagram of a dimming device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a dimming device according to an embodiment of the present invention;
fig. 3a is a schematic structural diagram of a planar grating according to an embodiment of the present invention;
fig. 3b is a schematic structural diagram of a curved surface grating according to an embodiment of the present invention;
fig. 4a is a schematic view of an outgoing light angle spectrum of a planar grating according to an embodiment of the present invention;
fig. 4b is a schematic diagram of light-emitting level distribution of a planar grating according to an embodiment of the present invention;
FIG. 5a is a schematic diagram of an angle spectrum of light output from a curved-surface grating according to an embodiment of the present invention;
fig. 5b is a schematic diagram of light-emitting order distribution of a curved surface grating according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a dimming device according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a dimming device according to a fourth embodiment of the present invention;
fig. 8 is a schematic structural diagram of a dimming device according to an embodiment of the present invention;
fig. 9 is a sixth schematic structural diagram of a dimming device according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a light modulation device according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram eight of a dimming device according to an embodiment of the present invention;
fig. 12 is a schematic structural diagram nine of a dimming device according to an embodiment of the present invention;
fig. 13 is a schematic structural diagram of a dimming device according to an embodiment of the present invention;
fig. 14 is an eleventh schematic structural diagram of a dimming device according to an embodiment of the present invention;
fig. 15 is a twelfth schematic structural diagram of a dimming device according to an embodiment of the present invention;
fig. 16 is a schematic structural diagram of a light modulation device according to a thirteenth embodiment of the present invention;
fig. 17 is a schematic structural diagram fourteen of a dimming device according to an embodiment of the present invention;
fig. 18 is a schematic structural diagram fifteen illustrating a dimming device according to an embodiment of the present invention;
fig. 19 is a schematic structural diagram sixteen illustrating a dimming device according to an embodiment of the present invention;
fig. 20 is a schematic structural diagram seventeenth of a dimming device according to an embodiment of the present invention;
fig. 21 is a schematic structural diagram eighteen of a dimming device according to an embodiment of the present invention;
fig. 22 is a schematic structural diagram of a display module according to an embodiment of the present invention.
Reference numerals:
01-a display panel; 02-dimming means; 10-a carrier substrate; 20-a dimming unit; 201-a flexible substrate; 202-a grating; 203-a support member; 2031-support column; 2032 — a first sub-support; 2033 — a second sub-support; 204-a drive member; 2041 — a first electrode; 2042-a second electrode; 205-fixed columns; 30-a protective cover plate; 40-frame sealing glue; 50-filling medium.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
An embodiment of the present invention provides a dimming device, as shown in fig. 1, including: a carrier substrate 10 and at least one dimming cell 20 disposed on the carrier substrate 10. As shown in fig. 2, each dimming cell 20 includes: a flexible substrate 201 and a grating (grating)202 disposed on the flexible substrate 201; the dimming unit 20 further includes: a support member 203 and a drive member 204; the supporting component 203 is used for supporting the flexible substrate 201 and the optical grating 202, and under the driving of the driving component, the flexible substrate 201 and the optical grating 202 are pressed to be bent and deformed towards the side far away from the bearing base plate 10.
Here, the carrier substrate 10 may be provided with one light control unit 20, or two or more light control units 20, which is not limited thereto. Fig. 1 illustrates an example of a dimming device including three dimming cells 20. Fig. 2 illustrates an example of a dimming device comprising a dimming unit 20.
The carrier substrate 10 may be a glass substrate, for example.
Since the dimming device provided by the embodiment of the present invention adjusts the direction of light incident on the dimming device, the flexible substrate 201 should have a certain light transmittance. In addition, the support member 203 presses the flexible substrate 201 to be bent and deformed, and thus the flexible substrate 201 should have a certain amount of deformation. The material of the flexible substrate 201 may be an organic material; and may be an inorganic material. When the material of the flexible substrate 201 is an organic material, the material of the flexible substrate 201 may be one or more of PET (Polyethylene terephthalate), PMMA (Polymethyl methacrylate, also called organic glass), COC (cyclic olefin copolymer), PI (Polyimide), and the like. In the case where the material of the flexible substrate 201 is an inorganic material, the material of the flexible substrate 201 may be, for example, one or more of metal, quartz, or glass.
Grating 202 refers to an optical device that consists of a large number of parallel slits of equal width and equal spacing. The grating parameters of the grating 202, such as the slit width or slit pitch, may be set as desired herein.
In addition, the material for manufacturing the grating 202 includes, but is not limited to, imprint resist, Photoresist (PR), silicon nitride (SiNx), silicon Oxide (SiOx), silicon oxynitride (SiOxNy), Indium Zinc Oxide (IZO), COC, PI, PET, and the like.
It should be understood that when the driving part 204 drives the supporting part 203 to press the flexible substrate 201 and the grating 202, the grating 202 may be bent and deformed; when the driving of the supporting member 203 by the driving member 204 is removed, the supporting member 203 does not press the flexible substrate 201 and the grating 202, and the grating 202 returns to its original shape.
In the case where the support member 203 does not press the flexible substrate 201 and the grating 202, that is, the flexible substrate 201 and the grating 202 are not subjected to bending deformation, as shown in fig. 3a, the grating 202 is a planar grating. When the support member 203 presses the flexible substrate 201 and the grating 202, that is, the flexible substrate 201 and the grating 202 are bent and deformed to a side away from the carrier substrate 10, as shown in fig. 3b, the grating 202 is a curved surface grating (also referred to as an arc surface grating). Referring to fig. 3a and 3b, after the grating 202 is changed from a planar grating to a curved planar grating, the grating parameters, such as the slit width, are changed. The embodiment of the invention realizes the variable grating by deforming the grating 202 to adjust the grating effect.
For the same beam of incident light, when the grating 202 is changed from a plane grating to a curved plane grating by bending deformation, the incident angle of the incident light on the grating 202 changes, and the grating parameters change, so the light-emitting angle of the emergent light changes. In addition, the curved surface gratings have different degrees of curvature, and the light-emitting angles of the emitted light are also different. For example, referring to fig. 3a, when collimated light is incident on a plane grating, the collimated light can be emitted in parallel along a certain direction by adjusting the parameters of the grating. Referring to fig. 3b, when collimated light is incident on the curved surface grating, since the incident angle of the incident light on the grating 202 is changed and the grating parameters are changed, the light-emitting angle of the emergent light is different from that of the emergent light emitted from the planar grating, and the light-emitting angle of the emergent light from the curved surface grating is divergent.
The same light beam is emitted to the plane grating and the curved surface grating respectively, and fig. 4a is a light-emitting angle spectrum of the plane grating. Fig. 4b is a light-emitting level distribution diagram of the plane grating. Fig. 5a is a light-emitting angle spectrum of the curved surface grating. FIG. 5b is a diagram showing the light-emitting order distribution of the curved surface grating. When the grating 202 is a plane grating, as can be seen from fig. 4b, the light-emitting order is single, and as can be seen from fig. 4a, the light-emitting viewing angle is concentrated at about ± 15 °. When the grating 202 is a curved surface grating, it can be seen from fig. 5b that the light is emitted in multiple orders and uniformly, and as can be seen from fig. 5a, the light-emitting viewing angles are concentrated at about ± 50 °. Compared with a plane grating, the curved plane grating can enable the light-emitting angle of emergent light to be increased.
On the basis, the supporting part 203 can press the whole flexible substrate 201 and the grating 202 to be bent and deformed towards the side far away from the bearing base plate 10 under the driving of the driving part 204; the flexible substrate 201 and the grating 202 may be pressed to be bent and deformed to a side away from the carrier substrate 10.
The embodiment of the invention provides a dimming device, which comprises a bearing substrate 10 and at least one dimming unit 20 arranged on the bearing substrate 10. Each dimming cell 20 includes a flexible substrate 201 and a grating 202 disposed on the flexible substrate 201; the dimming cell 20 further includes a supporting part 203 and a driving part 204; the supporting member 203 is used for supporting the flexible substrate 201 and the grating 202, and under the driving of the driving member 204, the flexible substrate 201 and the grating 202 are pressed to be bent and deformed to the side away from the carrier substrate 10. Since the driving member 204 can drive the supporting member 203 to press the flexible substrate 201 and the grating 202 to bend and deform towards the side away from the carrier substrate 10, so that the grating 202 changes from a planar grating to a curved surface grating, the incident light irradiates on the dimming device, and the light emitting angle of the light emitted from the dimming device can be adjusted by adjusting the degree of bending of the grating 202 to be the planar grating or the curved surface grating and the curved surface grating.
On this basis, in the embodiment of the present invention, the parameters of the grating 202 are adjusted by controlling the deformation of the grating 202 in the dimming unit 20, and the grating is a fixed grating processed at one time, so that the processing difficulty is greatly reduced, and the cost is saved.
In some embodiments, as shown in fig. 2, 6, 7, 8, 9, and 10, the support member 203 includes at least one support column 2031; the supporting columns 2031 are disposed between the carrier substrate 10 and the flexible substrate 201; the supporting columns 2031 are moved in the direction from the carrier substrate 10 to the flexible substrate 201 by the driving of the driving part 204; alternatively, the length of the supporting columns 2031 in the direction from the carrier substrate 10 to the flexible substrate 201 increases.
Here, as shown in fig. 9 and 10, the supporting member 203 includes a supporting column 2031; alternatively, as shown in fig. 2, 6, 7, and 8, the support member 203 may include two or more support columns 2031.
Further, when the supporting member 203 includes two or more supporting columns 2031, the driving member 204 may simultaneously drive the two or more supporting columns 2031 to move in a direction from the carrier substrate 10 to the flexible substrate 201; alternatively, the length in the direction from the carrier substrate 10 to the flexible substrate 201 increases. The driving component 204 can also drive any one of the two or more supporting columns 2031 to move along the direction from the carrier substrate 10 to the flexible substrate 201; alternatively, the length in the direction from the carrier substrate 10 to the flexible substrate 201 increases.
It should be understood that when the support columns 2031 are moved in the direction from the carrier substrate 10 to the flexible substrate 201; alternatively, when the length of the supporting columns 2031 in the direction from the carrier substrate 10 to the flexible substrate 201 increases, the supporting columns 2031 will jack up the carrier substrate 10 and the flexible substrate 201 to press the flexible substrate 201 and the grating 202 to bend and deform towards the side away from the carrier substrate 10.
Referring to fig. 2, it is considered that in the case where the support member 203 includes a plurality of support columns 2031, as shown in fig. 6, when any one of the plurality of support columns 2031 is moved in the direction from the carrier substrate 10 to the flexible substrate 201; alternatively, when the length in the direction from the carrier substrate 10 to the flexible substrate 201 increases, in addition to the flexible substrate 201 and the grating 202 facing the support columns 2031 that are moved or have an increased length being subjected to bending deformation toward the side away from the carrier substrate 10, the flexible substrate 201 and the grating 202 facing the support columns 2031 that are not moved or have an increased length are also subjected to bending deformation. Further, in the case where the supporting member 203 includes one supporting column 2031, since the flexible substrate 201 and the reticle 202 are not fixed to the carrier substrate 10, when the supporting column 2031 is moved in the direction from the carrier substrate 10 to the flexible substrate 201; alternatively, when the length of the supporting columns 2031 in the direction from the carrier substrate 10 to the flexible substrate 201 increases, the deformation of the flexible substrate 201 and the grating 202 is insignificant.
Based on the above, in some embodiments, as shown in fig. 7, 8, 9 and 10, the dimming unit 20 further includes: a plurality of fixing posts 205 disposed between the flexible substrate 201 and the carrier substrate 10; the fixed column 205 is respectively fixedly connected with the flexible substrate 201 and the bearing substrate 10; at least one supporting column 2031 is arranged between the adjacent fixing columns 205.
Here, a supporting column 2031 may be disposed between adjacent fixing columns 205; two or more support columns 2031 may also be provided.
In addition, the material of the fixing column 205 is not limited, and may be an inorganic substance; and may also be an organic polymer.
In addition, the shape of the fixing posts 205 is not limited, and may be a honeycomb grid or a rectangular grid. The side wall of the fixed column 205 and the flexible substrate 201 may form an acute angle or a right angle.
Since the dimming unit 20 of the embodiment of the present invention further includes a plurality of fixing posts 205 disposed between the flexible substrate 201 and the carrier substrate 10, and the fixing posts 205 are fixedly connected to the flexible substrate 201 and the carrier substrate 10, respectively, the fixing posts 205 can fix a portion of the flexible substrate 201 connected to the fixing posts 205 on the carrier substrate 10. In the case where the supporting member 203 includes one supporting column 2031, since the supporting column 2031 is disposed between two adjacent fixed columns 205, and the fixed columns 205 fix the portion of the flexible substrate 201 connected to the fixed columns 205 on the carrier substrate 10, the supporting column 2031 moves in the direction from the carrier substrate 10 to the flexible substrate 201; alternatively, when the length of the supporting columns 2031 in the direction from the carrier substrate 10 to the flexible substrate 201 increases, the flexible substrate 201 and the grating 202 deform more significantly. In the case where the supporting member 203 includes two or more supporting columns 2031, when the supporting columns 2031 disposed between adjacent fixing columns 205 are deformed, since the fixing columns 205 are fixedly connected to the flexible substrate 201 and the carrier substrate 10, respectively, only the flexible substrate 201 and the grating 202 directly opposite to the supporting columns 2031 are deformed, thereby ensuring the accuracy of the deformation of the flexible substrate 201 and the grating 202.
In some embodiments, as shown in fig. 10, the surface of the support columns 2031 near one end of the flexible substrate 201 is a plane parallel to the flexible substrate 201. In other embodiments, as shown in fig. 6, 7, 8, and 9, the surface of the support column 2031 near one end of the flexible substrate 201 is a circular arc.
In the embodiment of the present invention, when the supporting column 2031 moves along the direction from the carrier substrate 10 to the flexible substrate 201; or, when the length of the supporting column 2031 in the direction from the carrier substrate 10 to the flexible substrate 201 increases, the supporting column 2031 presses the flexible substrate 201 and the grating 202 to bend and deform towards the side away from the carrier substrate 10, and when the surface of the supporting column 2031 near one end of the flexible substrate 201 is an arc surface, the surface of the flexible substrate 201 and the grating 202 after bending and deformation is an arc surface, so that the flexible substrate 201 and the grating 202 continuously deform, and thus, the light irradiates the flexible substrate 201 and the grating 202 which bend and deform, and the angle of the emergent light continuously changes, thereby ensuring the uniformity of the light emitted from the light adjusting unit 20.
In some embodiments, as shown in fig. 11, the support member 203 includes a first sub-support 2032 and a second sub-support 2033 disposed opposite to each other; the first and second sub-supports 2032 and 2033 are fixedly connected to the flexible substrate 201; as shown in fig. 14, fig. 15, fig. 16, and fig. 17, the flexible substrate 201 and the grating 202 are disposed between the first sub-support 2032 and the second sub-support 2033; alternatively, as shown in fig. 11, 12, and 13, the flexible substrate 201 and the grating 202 are disposed on the sides of the first and second sub-supports 2032 and 2033 away from the carrier substrate 10.
In some embodiments, the first sub-support 2032 is fixedly connected to the carrier substrate 10, as shown in fig. 12 and 15, the second sub-support 2033 is driven by the driving member 204 to move in a direction approaching the first sub-support 2032 or as shown in fig. 13 and 16, and the second sub-support 2033 is driven by the driving member 204 to be deformed to increase in width in a direction approaching the first sub-support 2032. In other embodiments, as shown in fig. 17, the first sub-support 2032 is driven by the driving member 204 to move in a direction close to the second sub-support 2033 or to be deformed to increase in width in a direction close to the second sub-support 2033; the second sub-support 2033 is moved in a direction close to the first sub-support 2032 or is deformed to increase in width in a direction close to the first sub-support 2032 by the driving of the driving means.
In some embodiments, the first sub-support 2032 comprises at least one support column. In some embodiments, the second sub-support 2033 comprises at least one support column.
When the first sub-support 2032 is fixedly connected to the carrier substrate 10 and the second sub-support 2033 is driven by the driving member 204 to move in a direction approaching the first sub-support 2032 or to deform in a direction approaching the first sub-support 2032 with an increasing width, in this case, the first sub-support 2032 corresponds to a fixed column and the second sub-support 2033 corresponds to a displacement column.
The first sub-support 2032 is driven by the driving member 204 to move in a direction close to the second sub-support 2033 or to be deformed with an increased width in a direction close to the second sub-support 2033; when the second sub-support 2033 is driven by the driving member 204 to move in a direction approaching the first sub-support 2032 or to be deformed to increase in width in a direction approaching the first sub-support 2032, in this case, the first sub-support 2032 and the second sub-support 2033 each correspond to a displacement column.
In the embodiment of the present invention, the first sub-support 2032 is fixedly connected to the carrier substrate 10, and the second sub-support 2033 is driven by the driving member 204 to move in a direction close to the first sub-support 2032 or to deform with an increasing width in a direction close to the first sub-support 2032; alternatively, the first sub-support 2032 is moved in a direction approaching the second sub-support 2033 or is deformed to increase in width in a direction approaching the second sub-support 2033 by the driving of the driving member 204; when the second sub-support 2033 is driven by the driving member 204 to move in a direction approaching the first sub-support 2032 or to deform in a direction approaching the first sub-support 2032 with an increasing width, the first sub-support 2032 and the second sub-support 2033 may press the flexible substrate 201 and the grating 202 to bend and deform to a side away from the carrier substrate 10.
The structure of the driving part 204 is not limited, and it is sufficient that the supporting part 203 can press the flexible substrate 201 and the grating 202 to bend and deform toward the side away from the carrier substrate 10 under the driving of the driving part 204. In some embodiments, the drive component 204 comprises a micro-motor; the micro motor is connected with the supporting part 203 and is used for driving the supporting part 203 to move so as to press the flexible substrate 201 and the grating 202 to bend and deform towards the side far away from the bearing substrate 10.
Here, the direction in which the supporting member 203 moves can also be controlled by the micro motor. For example, in the case where the supporting member 203 includes at least one supporting column 2031, the micro motor may drive the supporting column 2031 to move in the direction from the carrier substrate 10 to the flexible substrate 201. In the case where the supporting member 203 includes the first and second sub-supports 2032 and 2033 that are oppositely disposed, the micro-motor may drive the second sub-support 2033 to move in a direction approaching the first sub-support 2032; the micro motor may also drive the first sub-support 2032 to move in a direction to approach the second sub-support 2033.
In other embodiments, the material of the supporting component 203 is an electro-deformable material, and the driving component 204 includes a first electrode 2041 and a second electrode 2042 which are oppositely arranged; the electric field generated by the first electrode 2041 and the second electrode 2042 is used for driving the supporting component 203 arranged between the first electrode 2041 and the second electrode 2042 to deform, so as to press the flexible substrate 201 and the grating 202 to bend and deform towards the side away from the carrier substrate 10.
The electrostrictive material is a material which can be stretched, bent or expanded under the action of an external electric field through the change of the internal structure of the material. The deformation direction of the material can be controlled by controlling the electric field direction of the external electric field, and the deformation degree of the material can be controlled by controlling the size of the external electric field. It will be appreciated that for an electro-deformable material, the electro-deformable material will return to its original shape when the electric field is removed.
In the embodiment of the present invention, the driving component 204 includes a first electrode 2041 and a second electrode 2042 which are disposed opposite to each other.
Here, it may be that one dimming cell 20 includes a first electrode 2041 and a second electrode 2042 which are oppositely disposed; it is also possible that one dimming cell 20 includes a plurality of first electrodes 2041 and second electrodes 2042 which are oppositely disposed.
In addition, in some embodiments, one of the first electrode 2041 and the second electrode 2042 is used as a common electrode, and the other is used as a driving electrode. A common voltage (i.e., a fixed voltage) or ground may be applied to the common electrode and a driving voltage may be applied to the driving electrode.
On the basis, in some embodiments, the light modulation device further includes a plurality of gate lines extending along the first direction and sequentially arranged along the second direction, a plurality of data lines extending along the second direction and sequentially arranged along the first direction, and a plurality of Thin Film Transistors (TFTs). The grid electrodes of a plurality of thin film transistors which are positioned in the same row and arranged along the first direction are electrically connected with the same grid line; the source electrodes of the plurality of thin film transistors which are positioned in the same row and arranged along the second direction are electrically connected with the same data line; a drain electrode of a thin film transistor is electrically connected to a driving electrode for controlling application of a driving voltage to the driving electrode. In the case that the supporting member 203 includes at least one supporting column 2031, the electric field generated by the first electrode 2041 and the second electrode 2042 can drive the supporting column 2031 disposed between the first electrode 2041 and the second electrode 2042 to increase in length along the direction from the carrier substrate 10 to the flexible substrate 201. In the case where the supporting member 203 includes the first and second sub-supports 2032 and 2033 that are oppositely disposed, the electric field generated by the first and second electrodes 2041 and 2042 may drive the second sub-support 2033 to be deformed with an increased width in a direction approaching the first sub-support 2032; alternatively, the electric field generated by the first and second electrodes 2041 and 2042 may drive the first sub-support 2032 to be deformed such that the width thereof increases in a direction approaching the second sub-support 2033, and drive the second sub-support 2033 to be deformed such that the width thereof increases in a direction approaching the first sub-support 2032.
In some embodiments, as shown in fig. 2, 6 and 7, the first electrode 2041 and the second electrode 2042 are both parallel to the carrier substrate 10. In other embodiments, as shown in fig. 8, 9, 10, 11, 12, 13, 14, 15, 16 and 17, the first electrode 2041 and the second electrode 2042 are perpendicular to the carrier substrate 10.
In the case that the first electrode 2041 and the second electrode 2042 are both parallel to the carrier substrate 10, it should be understood that, in order to avoid the first electrode 2041 and the second electrode 2042 from affecting the transmittance of light, the first electrode 2041 and the second electrode 2042 should be transparent electrodes. In this case, the material of the first electrode 2041 and the second electrode 2042 may be IZO (Indium Zinc Oxide), nano silver, or the like, for example.
In a case that the supporting member 203 includes at least one supporting column 2031, and the first electrode 2041 and the second electrode 2042 are both parallel to the flexible substrate 201, the first electrode 2041 is disposed on a side of the supporting column 2031 close to the carrier substrate 10, and the second electrode 2042 is disposed on a side of the supporting column 2031 far from the carrier substrate 10. The first electrode 2041 is disposed on a side of the supporting column 2031 close to the carrier substrate 10, and the first electrode 2041 may be disposed between the supporting column 2031 and the carrier substrate 10; the first electrode 2041 may also be disposed on a side of the carrier substrate 10 away from the supporting columns 2031. The second electrode 2042 is disposed on a side of the supporting column 2031 away from the carrier substrate 10, and the second electrode 2042 may be disposed between the flexible substrate 201 and the supporting column 2031; the second electrode 2042 may also be disposed between the flexible substrate 201 and the grating 202; it is of course also possible that the second electrode 2042 is arranged on the side of the grating 202 facing away from the flexible substrate 201.
In a case that one dimming unit 20 includes a plurality of first electrodes 2041 and second electrodes 2042 disposed opposite to each other, and the first electrodes 2041 and the second electrodes 2042 are both parallel to the carrier substrate 10, the plurality of first electrodes 2041 and the plurality of second electrodes 2042 may be independent of each other; as shown in fig. 2, 6 and 7, the plurality of second electrodes 2042 may be connected together, and the plurality of first electrodes 2041 may be independent of each other, in which case the second electrodes 2042 correspond to common electrodes, and the first electrodes 2041 correspond to driving electrodes.
In a case that the dimming device includes a plurality of dimming cells 20, and the first electrode 2041 and the second electrode 2042 are both parallel to the carrier substrate 10, the plurality of first electrodes 2041 and the plurality of second electrodes 2042 may be independent of each other; alternatively, a plurality of second electrodes 2042 may be connected together, and a plurality of first electrodes 2041 may be independent of each other, in which case the second electrodes 2042 correspond to common electrodes, and the first electrodes 2041 correspond to driving electrodes.
In the case that the first electrode 2041 and the second electrode 2042 are perpendicular to the carrier substrate 10, and the supporting member 203 includes a first sub-support 2032 and a second sub-support 2033 that are disposed opposite to each other, if the first sub-support 2032 is fixed to the carrier substrate 10 and the second sub-support 2033 is deformed under the driving of the driving member 204 as shown in fig. 13 and 16, the first electrode 2041 and the second electrode 2042 are disposed on both sides of the second sub-support 2033. For example, the first sub-electrode 2041 and the second sub-electrode 2042 may be respectively disposed on two opposite sides of the second sub-support 2033, and both contact the second sub-support 2033; the second sub-electrode 2042 may also be disposed on a side of the second sub-support 2033 away from the first sub-support 2032, the first sub-electrode 2041 is in contact with the first sub-support 2032, and the first sub-electrode 2041 is disposed on a side of the first sub-support 2032 close to the second sub-support 2033 or disposed on a side of the first sub-support 2032 away from the second sub-support 2033. If both the first and second sub-supports 2032 and 2033 are deformed by the driving of the driving part 204, the first and second sub-supports 2032 and 2033 are disposed between the first and second electrodes 2041 and 2042 as shown in fig. 17. The driving component 204 provided by the embodiment of the present invention includes, but is not limited to, the micro motor or the first electrode 2041 and the second electrode 2042 which are oppositely disposed.
Considering that the first electrode 2041 and the second electrode 2042 are disposed between the adjacent fixed columns 205, and the first electrode 2041 and the second electrode 2042 are perpendicular to the flexible substrate 201, the first electrode 2041 or the second electrode 2042 located outside the adjacent fixed columns 205 affects the electric field generated by the first electrode 2041 and the second electrode 2042 located inside the adjacent fixed columns 205. Referring to fig. 8, the first electrode 2041a and the second electrode 2042a between adjacent fixed columns 205 generate an electric field, and the first electrode 2041b and the second electrode 2042a on both sides of the fixed columns 205 also generate an electric field, so that the electric fields generated by the first electrode 2041b and the second electrode 2042a affect the electric fields generated by the first electrode 2041a and the second electrode 2042 a. Based on this, in some embodiments, a first electrode 2041 and a second electrode 2042 perpendicular to the flexible substrate 201 are disposed between the adjacent fixed columns 205; the material of the fixed columns 205 located between the adjacent first electrodes 2041 includes a bulk material and conductive particles doped in the bulk material.
Here, the main material refers to a main material for manufacturing the fixing post 205.
In the embodiment of the invention, since the material of the fixed column 205 located between the adjacent first electrodes 2041 includes the body material and the conductive particles doped in the body material, the conductive particles can shield the first electrode 2041 or the second electrode 2042 located outside the adjacent fixed column 205 from the electric field generated by the first electrode 2041 and the second electrode 2042 located in the fixed column 203.
In some embodiments, the dimming device further comprises: as shown in fig. 18 and 19, a transparent protective cover 30 is provided on the side of the light control unit 20 away from the carrier substrate 10.
Here, the protective cover 30 may be glass, for example.
Since the light modulation device in the embodiment of the invention further includes the transparent protective cover 30 disposed on the side of the light modulation unit 20 away from the carrier substrate 10, the protective cover 30 can protect the light modulation unit 20 and prevent the light modulation unit 20 from being damaged.
On this basis, as shown in fig. 20 and 21, the light modulation device further includes a circle of frame sealing glue 40 disposed at the edge of the carrier substrate 10 or the protective cover 30; the bearing substrate 10, the protective cover plate 30 and the frame sealing glue 40 form a sealing chamber; the dimming device further includes: a fill medium 50 disposed within the sealed chamber; the refractive index of the filling medium 50 is the same as that of the support member 203, and the refractive index of the filling medium 50 is different from that of the grating 202.
Here, the filling medium 50 may be water or a solution.
In addition, a circle of frame sealing glue 40 can be coated on the edge of the bearing substrate 10, and then the protective cover plate 30 and the bearing substrate 10 are paired together; or coating a circle of frame sealing glue 40 on the edge of the protective cover 30, and then assembling the carrier substrate 10 and the protective cover 30 together.
In the embodiment of the present invention, since the refractive index of the filling medium 50 is the same as the refractive index of the supporting member 203, light is irradiated onto the supporting member 203, and the supporting member 203 is prevented from refracting light, so that the supporting member 203 is prevented from affecting the propagation of light. Since the refractive index of the filling medium 50 is different from that of the grating 202, the grating 202 can adjust the direction of the light by irradiating the grating 202 with light.
An embodiment of the present invention further provides a display module, as shown in fig. 22, including a display panel 01 and the above-mentioned dimming device 02 disposed on the light emitting side of the display panel 01.
Here, the display panel 01 may be a liquid crystal display panel; it may also be an electroluminescent display panel; of course, a Micro-LED display panel or a DLP (Digital Light Processing) display panel may be used. In the case where the display panel 01 is an electroluminescent display panel, the electroluminescent display panel may be an organic electroluminescent diode display panel; it can also be a Quantum Dot Light Emitting diode (QLED) display panel.
Because the light-emitting angle of the light emitted by the display panel 01 after passing through the grating 202 is smaller under the condition that the grating 202 is a plane grating; under the condition that the grating 202 is a curved surface grating, the light-emitting angle of the light emitted by the display panel 01 after passing through the grating 202 is large, so that under the condition that the grating 202 is a planar grating, the display assembly can be used for realizing peep-proof display, protecting display content and enhancing privacy protection, and under the condition that the grating 202 is a curved surface grating, the display assembly can be used for realizing normal display (namely wide-view-angle display). Based on this, by adjusting the grating 202 to be a planar grating or a curved-surface grating, the display assembly can be controlled to realize switching between peep-proof display and normal display. In addition, in the case where the grating 202 is a curved surface grating, the size of the display viewing angle of the display module can be controlled by adjusting the degree of curvature of the curved surface grating.
In the case where the grating 202 is a plane grating, collimated light is incident on the plane grating, and by adjusting the parameters of the grating 202, collimated light can be emitted in parallel in a certain direction. In the case where the light emitted from the display panel 01 is collimated light, the collimated light emitted from the display panel 01 is incident on the dimming device, and the dimming unit 20 in the dimming device 02 adjusts the collimated light emitted from the display panel 01 so that part of the light is emitted to the left eye and part of the light is emitted to the right eye, thereby realizing 3D display. Light emitted from the display panel 01 is incident on the dimming device 02, and when the grating 202 is a curved surface grating, the light is diffused by the curved surface grating, so that 2D display can be realized. Based on this, by adjusting the grating 202 to be a planar grating or a curved-surface grating, the display component can be controlled to realize switching of 3D display or 2D display.
The embodiment of the invention provides a display assembly, which comprises a display panel 01 and a dimming device 02 arranged on the light emitting side of the display panel 01, wherein light emitted by the display panel 01 is emitted onto the dimming device 02, and the dimming device 02 can adjust the emitting angle of the emitted light, so that the switching between different display functions can be realized.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (6)
1. A display component is characterized by comprising a display panel and a dimming device arranged on the light emitting side of the display panel; the dimming device includes: the light-dimming device comprises a bearing substrate and at least one light-dimming unit arranged on the bearing substrate; each of the dimming cells includes: the grating structure comprises a flexible substrate and a grating arranged on the flexible substrate;
the dimming unit further includes: a support member and a drive member; the supporting component is used for supporting the flexible substrate and the grating, and the flexible substrate and the grating are extruded to bend and deform towards one side far away from the bearing base plate under the driving of the driving component; wherein the content of the first and second substances,
the support member comprises at least one support post; the supporting columns are arranged between the bearing substrate and the flexible substrate; under the driving of the driving part, the length of the supporting column along the direction from the bearing substrate to the flexible substrate is increased;
the material of the supporting part is an electro-deformation material, and the driving part comprises a first electrode and a second electrode which are oppositely arranged; the electric field generated by the first electrode and the second electrode is used for driving the supporting component arranged between the first electrode and the second electrode to deform so as to press the flexible substrate and the optical grating to bend and deform towards the side far away from the bearing substrate;
the first electrode and the second electrode are both perpendicular to the carrier substrate.
2. The display assembly of claim 1, wherein the dimming unit further comprises: a plurality of fixing columns arranged between the flexible substrate and the bearing base plate; the fixed column is respectively fixedly connected with the flexible substrate and the bearing base plate;
wherein, be provided with at least one support column between the adjacent fixed column.
3. The display assembly of claim 1, wherein a surface of the support post proximate to an end of the flexible substrate is a circular arc.
4. The display assembly according to claim 1, wherein in a case where the dimming cell includes a plurality of fixed posts, a first electrode and a second electrode perpendicular to the flexible substrate are disposed between the adjacent fixed posts;
the material of the fixed columns between the adjacent first electrodes comprises a body material and conductive particles doped in the body material.
5. The display assembly of claim 1, wherein the dimming device further comprises: the transparent protective cover plate is arranged on one side, far away from the bearing substrate, of the dimming unit.
6. The display module according to claim 5, wherein the light-adjusting device further comprises a ring of frame sealing glue disposed on the edge of the carrier substrate or the protection cover plate; the bearing substrate, the protective cover plate and the frame sealing glue form a sealed cavity;
the dimming device further includes: a fill medium disposed within the sealed chamber; the refractive index of the filling medium is the same as that of the supporting component, and the refractive index of the filling medium is different from that of the grating.
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| CN110764252B (en) * | 2019-10-28 | 2022-02-25 | 京东方科技集团股份有限公司 | Transparent panel and naked eye three-dimensional display device |
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