CN114355677A - Flexible display panel and display device - Google Patents
Flexible display panel and display device Download PDFInfo
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- CN114355677A CN114355677A CN202111653256.9A CN202111653256A CN114355677A CN 114355677 A CN114355677 A CN 114355677A CN 202111653256 A CN202111653256 A CN 202111653256A CN 114355677 A CN114355677 A CN 114355677A
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- liquid crystal
- display panel
- flexible display
- support column
- upper substrate
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1339—Gaskets; Spacers; Sealing of cells
- G02F1/13396—Spacers having different sizes
Abstract
The application discloses flexible display panel and display device, wherein, this flexible display panel, including the upper substrate, the infrabasal plate and set up liquid crystal layer and a plurality of support columns of mutual spaced between upper substrate and infrabasal plate, wherein, a plurality of liquid crystal holding regions are injectd to a plurality of support column correspondences, and a plurality of liquid crystal molecules in the liquid crystal layer correspond respectively and set up in a plurality of liquid crystal holding regions, and when flexible display panel atress was crooked, a plurality of support columns were injectd the density of liquid crystal molecule in each liquid crystal holding region. In this way, flexible display panel in this application is when taking place the bending, and a plurality of support columns can be injectd the density of the liquid crystal molecule in flexible display panel, and reduce its density degree of reducing or increase its density to the thickness change of liquid crystal layer when can reducing flexible display panel bending, and the luminous efficiency loss that the regional liquid crystal layer thickness of effective compensation bending brought, and obtain better display effect.
Description
Technical Field
The application relates to the technical field of flexible display panels, in particular to a flexible display panel and a display device.
Background
Nowadays, the LCD (Liquid Crystal Display) Display technology is one of the mainstream technologies in the current Display field, and its flexibility is also an important branch in the flexible Display technology, and can be widely applied to the fields of notebook computers, smart homes, vehicles, and the like.
However, when the flexible LCD screen is bent, the thickness of the liquid crystal layer between the CF (color filter) substrate and the TFT (Thin Film Transistor) substrate in the bent area is reduced due to the change of the screen pitch, that is, the distance between the CF substrate and the TFT substrate in the flexible LCD screen, so that the corresponding display effect is also deteriorated, and the good display effect cannot be continuously maintained.
Disclosure of Invention
The main technical problem who solves of this application provides a flexible display panel and display device to flexible display panel among the solution prior art is when taking place to buckle, the problem that the display effect worsens.
In order to solve the technical problem, the application adopts a technical scheme that: the utility model provides a flexible display panel, including upper substrate, infrabasal plate and set up liquid crystal layer and a plurality of support columns of mutual interval between upper substrate and infrabasal plate, wherein, a plurality of support columns correspond and prescribe a limit to a plurality of liquid crystal holding regions, and a plurality of liquid crystal molecules in the liquid crystal layer correspond respectively and set up in a plurality of liquid crystal holding regions, and when flexible display panel atress was crooked, a plurality of support columns were prescribed a limit to the density of liquid crystal molecule in each liquid crystal holding region.
The cross section size of the support column far away from the middle position of the upper substrate and the lower substrate is smaller than that of other positions.
Wherein, the side of the support column facing the liquid crystal layer is a single-blade hyperbolic surface of revolution or a double-blade hyperbolic surface.
The support column comprises a main support column and an auxiliary support column, one end of the main support column is connected with the lower substrate, the other end of the main support column is connected with the upper substrate, one end of the auxiliary support column is connected with the lower substrate, the other end of the auxiliary support column is arranged at an interval with the upper substrate, a concave part is formed at the other end of the auxiliary support column, and the concave part is used for accommodating a plurality of liquid crystal molecules.
Wherein, the auxiliary supporting column is in a partial cone shape, a trapezoidal body, a cylinder or a square body.
Wherein, the bottom of depressed part is the cambered surface setting.
Wherein at least one support column is in an annular structure, and/or at least two support columns in the plurality of support columns are sequentially connected to form the annular structure; each annular structure defines a liquid crystal receiving area.
The flexible display panel further comprises a plurality of black matrixes arranged between the upper substrate and the lower substrate and spaced from each other, and the plurality of black matrixes and the plurality of support columns are spaced from each other and arranged on the same layer.
Wherein, the support column is an elastic support column.
In order to solve the above technical problem, another technical solution adopted by the present application is: there is provided a display device comprising a circuit substrate and the flexible display panel as defined in any one of the above provided on the circuit substrate.
The beneficial effect of this application is: be different from prior art's condition, a plurality of support columns among the flexible display panel that this application provided have correspondingly limited a plurality of liquid crystal and hold the region, and a plurality of liquid crystal molecules in the liquid crystal layer correspond respectively and set up in a plurality of liquid crystal and hold the region, when flexible display panel atress produces the bending, a plurality of support columns can be injectd the density of the liquid crystal molecule in each liquid crystal holding region, and reduce its density reduction degree or increase its density, with the thickness change of liquid crystal layer when can reducing flexible display panel bending, thereby the light efficiency loss that the liquid crystal layer thickness reduction that can effectively compensate the bending region brought, and obtain better display effect.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. Wherein:
fig. 1 is a schematic structural diagram of a first embodiment of a flexible display panel according to the present application;
fig. 2 is a schematic structural diagram of the flexible display panel in fig. 1 when it is bent;
FIG. 3 is a schematic structural diagram of a second embodiment of a flexible display panel according to the present application;
fig. 4 is a schematic structural diagram of a third embodiment of the flexible display panel of the present application;
FIG. 5 is a detailed top view of the support posts and the liquid crystal layer in the flexible display panel of FIG. 4;
fig. 6 is a schematic structural diagram of an embodiment of a display device according to the present application.
Description of reference numerals: 10/20/30/312, a flexible display panel; 11/21/31, an upper substrate; 12/22/32, lower substrate; 13/23/33, a liquid crystal layer; 14/24/34, a support column; 241. a main support column; 242. an auxiliary support column; 2421. a recessed portion; 31. a display device; 311. a circuit board is provided.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all 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.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a flexible display panel according to a first embodiment of the present application. In the present embodiment, the flexible display panel 10 includes: an upper substrate 11, a lower substrate 12, a liquid crystal layer 13, and a plurality of support columns 14.
Wherein the upper substrate 11 may be a CF substrate for color display in a display panel, and the raw material thereof may be a glass substrate; the lower substrate 12 may be specifically a TFT substrate, and the TFT functions to transmit and control an electric signal in the display panel, i.e., to determine the magnitude of a voltage applied to liquid crystals in the display panel therethrough; the liquid crystal layer 13 can be understood as a nematic liquid crystal layer 13, so that the transmittance of light can be controlled under different voltage driving, thereby achieving the purpose of displaying images.
Specifically, the liquid crystal layer 13 is disposed between the upper substrate 11 and the lower substrate 12, and the plurality of supporting pillars 14 are also disposed between the upper substrate 11 and the lower substrate 12 at intervals and disposed in the same layer as the liquid crystal layer 13.
The plurality of support columns 14 correspondingly divide the liquid crystal layer 13 into a plurality of distribution areas to correspondingly define a plurality of liquid crystal accommodation areas (not shown), and the plurality of liquid crystal molecules in the liquid crystal layer 13 are respectively and correspondingly disposed in the plurality of liquid crystal accommodation areas, that is, each of the liquid crystal accommodation areas accommodates a portion of the liquid crystal molecules. When the flexible display panel 10 is stressed to bend, the plurality of supporting columns 14 can limit the density of the liquid crystal molecules in each liquid crystal containing region, for example, the plurality of supporting columns 14 can deform correspondingly to reduce the containing space of each liquid crystal containing region, so as to reduce the density of the liquid crystal molecules contained therein or increase the density thereof; or, the number of the liquid crystal molecules accommodated in each liquid crystal accommodating region is supplemented to reduce the thickness variation of the liquid crystal layer 13 when the flexible display panel 10 is bent, so that the light effect loss caused by the thickness reduction of the liquid crystal layer 13 in the bent region can be effectively compensated, and a better display effect is obtained.
In an embodiment, the cross-sectional dimension of the support pillars 14 away from the middle of the upper substrate 11 and the lower substrate 12 is smaller than the cross-sectional dimensions of the other positions, that is, each support pillar 14 is correspondingly shaped as a recess with a wide top and a wide bottom and a narrow middle, so that compared with the conventional structure, when the flexible display panel 10 is not deformed, the recess shape enables each corresponding liquid crystal accommodation region to accommodate more liquid crystal molecules.
Further, as shown in fig. 2, fig. 2 is a schematic structural diagram of the flexible display panel in fig. 1 when the flexible display panel is bent, where the supporting columns 14 are specifically elastic supporting columns 14, so that when the flexible display panel 10 is bent, each corresponding supporting column 14 will also generate a corresponding form change, for example, a concave portion in the middle of each supporting column 14 will be convexly disposed toward two sides, and liquid crystal molecules in the concave space of each supporting column 14 are squeezed out, so as to compensate for a light effect loss caused by a decrease in thickness of the liquid crystal layer 13 in a bending region of the flexible display panel 10, and further reduce a thickness change of the liquid crystal layer 13 during bending, so that the flexible display panel 10 can still maintain a good display effect.
Alternatively, the side surface of the supporting pillar 14 facing the liquid crystal layer 13 may be any reasonable shape such as a single-leaf hyperbolic surface or a double-leaf hyperbolic surface, which can make the middle portion of the supporting pillar concave compared to the opposite ends of the supporting pillar near the upper substrate 11 and the lower substrate 12, which is not limited in this application.
Alternatively, the supporting column 14 may be formed by any reasonable three-dimensional structure such as two trapezoids symmetrically arranged with respect to the middle position between the upper substrate 11 and the lower substrate 12, or two partial cones, which can make the middle position of the three-dimensional structure concave compared to the two opposite ends of the three-dimensional structure, which is not limited in this application.
In an embodiment, the flexible display panel 10 further includes a plurality of black matrixes (not shown) disposed between the upper substrate 11 and the lower substrate 12, and the plurality of black matrixes are spaced apart from the plurality of support pillars 14 and disposed in the same layer.
Further, each of the black matrixes may also have the same shape corresponding to the supporting pillars 14, that is, the cross-sectional dimension of the middle position of the black matrix away from the upper substrate 11 and the lower substrate 12 is smaller than the cross-sectional dimensions of the other positions, and the black matrixes are elastic black matrixes, so that when the flexible display panel 10 is bent, each black matrix can generate corresponding form change, and liquid crystal molecules in the concave space of each black matrix are squeezed out, so as to compensate for the light effect loss caused by the thickness reduction of the liquid crystal layer 13 in the bending area of the flexible display panel 10, and further reduce the thickness change of the liquid crystal layer 13 during bending, so that the flexible display panel 10 can still maintain a better display effect.
It is understood that the upper substrate 11 of the flexible display panel 10 may also be correspondingly formed with a transparent electrode layer (not shown), i.e. an ITO (indium tin oxide) layer, wherein the indium tin oxide is a mixture of a transparent brown film or a yellow-off-gray block composed of 90% In2O3(indium oxide) and 10% SnO2(silicon dioxide) is mixed and mainly used for manufacturing liquid crystal displays, flat panel displays, plasma displays, touch screens, electronic paper, organic light emitting diodes, solar cells, antistatic coatings and EMI (Electromagnetic interference)reference, electromagnetic interference) shielding, various optical coating films, and the like.
And a common electrode layer (not shown) may be correspondingly formed on the lower substrate 12 in the flexible display panel 10 to enable a voltage to be applied to the liquid crystal layer 13 in the flexible display panel 10 through the common electrode layer.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a flexible display panel according to a second embodiment of the present application. In this embodiment, on the basis of the first embodiment of the flexible display panel provided in the present application, the support columns 24 in the flexible display panel 20 further include a main support column 241 and an auxiliary support column 242.
One end of the main support column 241 is connected to the lower substrate 22, and the other end is connected to the upper substrate 21. One end of the auxiliary supporting column 242 is connected to the lower substrate 22, but the other end thereof is spaced from the upper substrate 21, and the other end of the auxiliary supporting column 242 is further formed with a recess 2421, and the recess 2421 can accommodate a plurality of liquid crystal molecules, so that when the flexible display panel 20 is compressed by a force and bent, the plurality of liquid crystal molecules accommodated in the recess 2421 can be squeezed out and enter the corresponding liquid crystal accommodating area to compensate the bent area of the flexible display panel 20, that is, the light efficiency loss caused by the thickness reduction of the liquid crystal layer 23 in each liquid crystal accommodating area, thereby reducing the thickness variation of the liquid crystal layer 23 during bending, so that the flexible display panel 20 can still maintain a good display effect.
In other embodiments, one end of the auxiliary supporting column 242 can be further connected to the upper substrate 21, the other end of the auxiliary supporting column is spaced from the lower substrate 22, and the other end of the auxiliary supporting column is further correspondingly formed with a recess 2421, so that the recess 2421 can accommodate a plurality of liquid crystal molecules, when the flexible display panel 20 is compressed by a force and is bent, the plurality of liquid crystal molecules accommodated in the recess 2421 can be extruded and enter the corresponding liquid crystal accommodating area, which is not limited in the present application.
Optionally, the main supporting pillar 241 has any reasonable shape such as a partial cone, a trapezoid, a cylinder or a square, which is not limited in this application.
Optionally, the primary support posts 241 are the same shape as the secondary support posts 242. In other embodiments, the shapes of the main supporting column 241 and the auxiliary supporting column 242 may be different, which is not limited in this application.
Optionally, the auxiliary supporting columns 242 may have any reasonable shape, such as a partial cone, a trapezoid, a cylinder, or a square, which is not limited in this application.
Alternatively, the bottom of the recess 2421 of the auxiliary supporting column 242 may be specifically arranged in a cambered surface; alternatively, the recess 2421 of the auxiliary supporting pillar 242 may be a blind hole with any reasonable shape, such as a cylinder, a trapezoid, or a cube, which is not limited in this application.
Optionally, the number ratio of the main supporting columns 241 to the auxiliary supporting columns 242 is 1:25 to 1:35, and preferably 1:30, which is not limited in the present application.
It is understood that in the present embodiment, the upper substrate 21, the lower substrate 22, and the liquid crystal layer 23 are respectively the same as the upper substrate 11, the lower substrate 12, and the liquid crystal layer 13, and please refer to fig. 1 and fig. 2 and related text, which are not repeated herein.
Referring to fig. 4 and fig. 5, fig. 4 is a schematic structural diagram of a third embodiment of the flexible display panel of the present application, and fig. 5 is a detailed top view of a supporting pillar and a liquid crystal layer in the flexible display panel of fig. 4. This embodiment differs from the first embodiment of the flexible display panel provided in the present application in that at least one support column 34 in the flexible display panel 30 is in a ring-shaped structure, and each ring-shaped structure defines one liquid crystal accommodation region.
Therefore, the liquid crystal molecules corresponding to the liquid crystal layer 33 are specifically accommodated in the liquid crystal accommodating area defined by each annular structure, so that when the flexible display panel 30 is stressed to bend, the annular structure can limit the liquid crystal molecules in the liquid crystal accommodating area to move out of the area, thereby effectively reducing the thickness change of the liquid crystal layer 33 when the flexible display panel 30 bends, effectively compensating the light effect loss caused by the thickness reduction of the liquid crystal layer 33 in the bending area, and obtaining a better display effect.
In another embodiment, the plurality of supporting pillars 34 in the flexible display panel 30 may further correspond to at least two supporting pillars 34 connected in sequence to form an annular structure, and each annular structure defines a liquid crystal containing region for containing liquid crystal molecules corresponding to the liquid crystal layer 33, which is not limited in this application.
In another embodiment, the plurality of supporting pillars 34 in the flexible display panel 30 may further correspond to at least one supporting pillar 34 in an annular structure, and the flexible display panel further includes an annular structure formed by connecting at least two supporting pillars 34 in sequence, and each annular structure correspondingly defines a liquid crystal accommodating region for accommodating liquid crystal molecules corresponding to the liquid crystal layer 33, which is not limited in this application.
It is understood that in the present embodiment, the upper substrate 31 and the lower substrate 32 are respectively the same as the upper substrate 11 and the lower substrate 12, and please refer to fig. 1 and fig. 2 and related text, which are not repeated herein.
Fig. 4 is a schematic structural diagram of an embodiment of a display device according to the present application. The display device 31 includes a circuit substrate 311 electrically connected to each other, and a flexible display panel 312 disposed on the circuit substrate 311.
It should be noted that the circuit substrate 311 is specifically a circuit logic board for providing a power supply and a driving voltage for the flexible display panel 312 and electrically connecting with an external device or apparatus, and the flexible display panel 312 described in this embodiment is the flexible display panel 10 or the flexible display panel 20 described in any of the above embodiments, which is not described herein again.
Be different from prior art's condition, a plurality of support columns among the flexible display panel that this application provided have correspondingly limited a plurality of liquid crystal and hold the region, and a plurality of liquid crystal molecules in the liquid crystal layer correspond respectively and set up in a plurality of liquid crystal and hold the region, when flexible display panel atress produces the bending, a plurality of support columns can be injectd the density of the liquid crystal molecule in each liquid crystal holding region, and reduce its density reduction degree or increase its density, with the thickness change of liquid crystal layer when can reducing flexible display panel bending, thereby the light efficiency loss that the liquid crystal layer thickness reduction that can effectively compensate the bending region brought, and obtain better display effect.
The above description is only for the purpose of illustrating embodiments of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application or are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.
Claims (10)
1. A flexible display panel comprises an upper substrate, a lower substrate, a liquid crystal layer arranged between the upper substrate and the lower substrate, and a plurality of support pillars arranged at intervals,
the supporting columns correspondingly define a plurality of liquid crystal containing areas, a plurality of liquid crystal molecules in the liquid crystal layer are respectively and correspondingly arranged in the liquid crystal containing areas, and when the flexible display panel is stressed and bent, the supporting columns limit the density of the liquid crystal molecules in each liquid crystal containing area.
2. The flexible display panel of claim 1,
the cross-sectional dimension of the support column far away from the middle positions of the upper substrate and the lower substrate is smaller than that of other positions.
3. The flexible display panel of claim 2,
the side surface of the support column facing the liquid crystal layer is a single-blade hyperbolic surface of revolution or a double-blade hyperbolic surface.
4. The flexible display panel of claim 1,
the support column includes main tributary support column and assistance support column, the one end of main tributary support column is connected the infrabasal plate, the other end is connected the upper substrate, the one end of assisting the support column is connected the infrabasal plate, the other end with the upper substrate interval sets up, just the other end of assisting the support column is formed with the depressed part, the depressed part is used for the holding a plurality of liquid crystal molecules.
5. The flexible display panel of claim 1,
the auxiliary supporting column is in a partial conical shape, a trapezoidal body, a cylinder or a square body.
6. The flexible display panel of claim 1,
the bottom of the depressed part is arranged in a cambered surface manner.
7. The flexible display panel of any of claim 1,
at least one support column is of an annular structure, and/or at least two support columns in the plurality of support columns are sequentially connected to form the annular structure; each of the annular structures defines one of the liquid crystal receiving regions.
8. The flexible display panel of claim 1,
the flexible display panel further comprises a plurality of black matrixes arranged between the upper substrate and the lower substrate and spaced from each other, and the plurality of black matrixes are spaced from the plurality of support pillars and arranged on the same layer.
9. The flexible display panel of any of claims 1-8,
the support columns are elastic support columns.
10. A display device, characterized in that the display device comprises a circuit substrate and the flexible display panel according to any one of claims 1-9 disposed on the circuit substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111653256.9A CN114355677A (en) | 2021-12-30 | 2021-12-30 | Flexible display panel and display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111653256.9A CN114355677A (en) | 2021-12-30 | 2021-12-30 | Flexible display panel and display device |
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| CN114355677A true CN114355677A (en) | 2022-04-15 |
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| CN202111653256.9A Pending CN114355677A (en) | 2021-12-30 | 2021-12-30 | Flexible display panel and display device |
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| JP2008292758A (en) * | 2007-05-24 | 2008-12-04 | Toshiba Corp | Liquid crystal display panel, method of manufacturing liquid crystal display panel, liquid crystal display device, and method of manufacturing liquid crystal display device |
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| JP2000131697A (en) * | 1993-08-25 | 2000-05-12 | Matsushita Electric Ind Co Ltd | Liquid crystal display panel |
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