CN113470524A - Flexible cover plate and flexible display module thereof - Google Patents
Flexible cover plate and flexible display module thereof Download PDFInfo
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- CN113470524A CN113470524A CN202110721166.2A CN202110721166A CN113470524A CN 113470524 A CN113470524 A CN 113470524A CN 202110721166 A CN202110721166 A CN 202110721166A CN 113470524 A CN113470524 A CN 113470524A
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- G—PHYSICS
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- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
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Abstract
The invention relates to a flexible cover plate and a flexible display module thereof, wherein the flexible cover plate comprises a cover plate main body, the cover plate main body is provided with a first side and a second side which are oppositely arranged, the first side of the cover plate main body is provided with a diffuse reflection layer, and the diffuse reflection layer is used for reducing the light reflectivity of the flexible cover plate to light rays incident from the first side. Above-mentioned flexible apron, diffuse reflection layer have reduced the light reflectivity of flexible apron to the light by the incident of first side to weaken flexible display module's crease performance, improved the display effect of the flexible display module who is equipped with its flexible apron.
Description
Technical Field
The invention relates to the technical field of display panel manufacturing, in particular to a flexible cover plate and a flexible display module thereof.
Background
With the development of mobile communication technology and the popularization of display devices such as mobile phones, tablet computers and intelligent wearable devices, people have higher and higher requirements for the display devices. With the development of flexible display screens, the flexible and foldable performance of flexible display screens makes foldable display devices become practical. The foldable display device with the foldable display screen can be switched between the folded state and the unfolded state, and the watching visual field of the display device in the unfolded state can be doubled, so that the mobile terminal can be conveniently carried and has larger watching and operating visual fields.
In order to meet the folding requirement of the display screen, a deformable polymer material is generally used as a cover plate, a support film and other film materials of the flexible display screen. However, after the display screen is subjected to long-term periodic bending, due to the flow and accumulation of the optical cement material in the bending area and the plastic deformation of the polymer film material, obvious creases are easily formed in the bending area of the display screen, so that the sensory effect and the display effect of the display screen are affected.
Disclosure of Invention
Therefore, there is a need for a flexible cover plate and a flexible display module thereof, which can achieve the technical effect of improving the appearance of creases.
According to an aspect of the present application, there is provided a flexible cover plate, the flexible cover plate includes a cover plate main body, the cover plate main body has a first side and a second side which are oppositely disposed, the first side of the cover plate main body is provided with a diffuse reflection layer, and the diffuse reflection layer is used for reducing the light reflectivity of the flexible cover plate to light incident from the first side.
So, diffuse reflection layer has reduced the light reflectivity of flexible apron to the light by the incident of first side to weaken flexible display module's crease performance, improved the display effect of the flexible display module who is equipped with its flexible apron.
In one embodiment, the diffuse reflective layer comprises a plurality of reflective particles in a dispersed arrangement.
So, reflective particle's setting makes the surface of flexible apron form dull polish feel, compares the smooth surface of apron among the prior art, and reflective particle's setting makes flexible apron surface form the diffuse reflection, has reduced the whole reflectivity of flexible apron to incident light to the crease performance of flexible display module has weakened, especially improved the sense organ effect of flexible display module under the natural light.
In one embodiment, the maximum outer diameter of each of the reflective particles is less than 1 micron, and the distance between any two adjacent reflective particles is greater than 500 nm.
Therefore, the flexible cover plate achieves an ideal reflection effect.
In one embodiment, the reflective particles are at least one of spherical, columnar, or polyhedral.
Thus, the light rays incident from the first side form different emergent angles.
In one embodiment, the flexible cover plate is provided with a first area and a second area which is positioned at least on one side of the first area and is adjacent to the first area;
the arrangement density of the reflective particles in the first region is smaller than that of the reflective particles in the second region.
Therefore, the diffuse reflection of the second area of the flexible cover plate is stronger, and the display effects of the first area and the second area are higher in consistency.
In one embodiment, the flexible cover plate further comprises a plurality of light shielding blocks;
the first side of the cover plate main body is provided with a plurality of accommodating grooves, each accommodating groove is filled with at least one shading block, and the diffuse reflection layer covers the shading blocks in the accommodating grooves on the first side; and/or
The second side of the cover plate main body is provided with a plurality of accommodating grooves, and each accommodating groove is filled with at least one shading block.
Therefore, the shading blocks can block light emitted by the flexible display panel to emit, and light at a specific position and a specific angle is allowed to emit from a gap between the adjacent shading blocks, so that the effect of adjusting the light emitting amount and the light emitting angle of the first area and the second area of the flexible cover plate is achieved, and the display effect of the flexible display module is improved.
In one embodiment, the flexible cover plate is provided with a first area and a second area which is positioned at least on one side of the first area and is adjacent to the first area;
the flexible cover includes a virtual bending axis located in the first zone, the flexible cover being bendable about the virtual bending axis;
the plurality of accommodating grooves which are positioned on the same side of the flexible cover plate are arranged at intervals in a first direction, the lengthwise extending direction of each accommodating groove is parallel to the extending direction of the virtual bending shaft, and each accommodating groove extends from one end of the cover plate main body to the other end of the cover plate main body;
wherein the first direction is perpendicular to the virtual bending axis.
Therefore, the accommodating groove penetrates through the bending area of the flexible cover plate, and a good blocking effect is achieved.
In one embodiment, the minimum distance between two adjacent accommodating grooves which are positioned on the same side of the flexible cover plate is greater than 3 micrometers;
and the minimum distance between every two adjacent accommodating grooves is smaller than 1.5 times of the maximum width of any one accommodating groove in the first direction.
Thus, the light shielding effect can be ensured and the secondary diffraction phenomenon can be avoided.
In one embodiment, the flexible cover plate is provided with a first area and a second area which is positioned at least on one side of the first area and is adjacent to the first area;
the cover plate main body includes:
a first base part provided in the first region;
a second base portion provided in the second region, the first base portion and the second base portion being connected to each other;
wherein the arrangement density of the accommodating groove arranged on the first base part is less than the arrangement density of the accommodating groove arranged on the second base part.
Thus, the consistency of the light output quantity and the light output angle of the first area and the second area is further improved.
According to another aspect of the present application, a flexible display module is provided, which includes a display substrate and a flexible cover plate formed on a light-emitting side of the display substrate;
the flexible cover plate is the flexible cover plate.
In one embodiment, the flexible cover plate is provided with a first area and a second area which is positioned at least on one side of the first area and is adjacent to the first area;
the flexible display module further comprises a color filter layer, the color filter layer is positioned on one side of the flexible cover plate far away from the diffuse reflection layer, and the color filter layer is provided with a first color filter area arranged corresponding to the first area of the flexible cover plate and a second color filter area arranged corresponding to the second area of the flexible cover plate;
the color filter layer comprises a plurality of color filter parts, and a change curve of the outer diameter of each color filter part is in a lower opening parabola shape from one side of the second color filter region far away from the first color filter region to one side of the first color filter region far away from the second color filter region.
Above-mentioned flexible apron and be equipped with its flexible display module assembly through set up the diffuse reflection layer in the apron main part, adjusts the reflectivity in first district and second district, has effectively reduced the crease performance in the district of buckling under the natural light. And, still set up through the size of the setting of shading piece and the color filter portion of color filter layer, improved the whole light yield and the uniformity of light extraction angle in first district and second district, promoted flexible display module's display effect.
Drawings
FIG. 1 is a schematic view of a display module in the prior art being bent in a U-shape;
FIG. 2 is a schematic view illustrating a display module in a prior art being bent in a drop shape;
FIG. 3 is a schematic view illustrating a light path of a display module according to the prior art;
FIG. 4 is a schematic structural diagram of a flexible display module according to an embodiment of the invention in an unfolded state;
FIG. 5 is a cross-sectional view of a flexible cover of a flexible display module according to an embodiment of the invention;
FIG. 6 is a cross-sectional view of a flexible cover of a flexible display module according to an embodiment of the present invention;
FIG. 7 is a partial film cross-sectional view of a flexible display panel of the flexible display panel according to one embodiment of the present invention;
the reference numbers illustrate:
100. a flexible display module; 20. a flexible cover plate; 21. a first region; 22. a second region; 23. a cover plate main body; 231. a first base section; 232. a second base portion; 233. a first side; 234. a second side; 235. a containing groove; 24. a diffuse reflective layer; 25. a light shielding block; 40. a flexible display panel; 41. a display substrate; 412. a pixel unit; 43. a color filter layer; 432. a light shielding portion; 434. a color filter portion.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are illustrated in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of the present application.
As shown in fig. 1, as in the related art, in order to enable the display module to be bent, a plastic material such as CPI (color Polyimide), PET (Polyethylene Terephthalate), PEN (Polyethylene Naphthalate), TPU (thermoplastic polyurethane elastomer), or aramid, which is a surface-coated hardened layer (Hard Coating), is generally used as a cover plate of the display module, and the cover plate is bent to form a U-shaped bent region. However, the bending mode causes a large gap between the straight areas on the two sides of the bending area, and further causes the thickness of the bent display module to be too large and inconvenient to hold, and the bending angle of the central position of the U-shaped bending area is small, so that obvious creases are easy to appear after the display module is bent for a long time.
In order to solve the above problems, as shown in fig. 2, some display modules are bent to form a drop-shaped bending area, so that the bending area has a larger radius, thereby effectively reducing the risk of fracture of the display modules in the bending process and delaying the time of occurrence of obvious creases.
However, in the research, it is found that the solution of using the drop-shaped bending region delays the time of the occurrence of the crease, but the cover plate made of the polymer material inevitably has the crease under the long-term cyclic and reciprocating bending, and the crease becomes more obvious as the service time is prolonged. As shown in fig. 3, the subjective feeling of the fold is caused by the change of the optical paths of natural light, self-luminous incident-reflected light, incident-transmitted light, and the like at the fold due to the deformation of the film layer, and further, the amount of light entering the human eye at the same time and at the same angle is different.
In order to solve the above problem, as shown in fig. 4, the present application provides a flexible display module 100, where the flexible display module 100 has a good optical display effect and a more reasonable light path, so that the human eye cannot easily perceive the existence of the fold.
The cross section of the flexible display module 100 is substantially rectangular, the length direction of the flexible display module 100 is a first direction (i.e., the X-axis direction in fig. 1), the width direction of the flexible display module 100 is a second direction (i.e., the Y-axis direction in fig. 1), the thickness direction of the cover plate is a third direction (i.e., the Z-axis direction in fig. 1), and the first direction, the second direction, and the third direction are disposed to intersect with each other.
The flexible display module 100 includes a flexible cover 20 and a flexible display panel 40, the flexible display panel 40 is attached to an inner side surface of the flexible cover 20, the flexible cover 20 is configured to be bendable integrally with the flexible display panel 40, so as to protect the flexible display panel 40 and reduce the influence of external impact on the flexible display panel 40, and meanwhile, a certain surface hardness is provided for the flexible display module 100, so as to facilitate subsequent terminal assembly. Particularly, in the embodiment of the present application, the flexible cover 20 and the flexible display panel 40 may be integrally bent in a U shape, and the flexible display module 100 may implement U-shaped curved surface display of the front, the back and one side of a product (e.g., a mobile phone terminal).
The flexible cover 20 has a first region 21 and a second region 22 located on at least one side of the first region 21 and adjacent to the first region 21. For example, in some embodiments, the first region 21 may be a curved region (arc groove region), the second region 22 may be a flat region, and the first region 21 and the second region 22 smoothly transition. It is easy to understand that when the flexible display module 100 is not bent, the first region 21 and the second region 22 are also straight regions, but the first region 21 is a bent region after the flexible display module 100 is bent. Thus, after a long bending time, the flexible cover 20 will form a crease in the first region 21, in particular in the transition area between the first region 21 and the second region 22. The second region 22 is located on at least one side of the first region 21, which means that, as shown in fig. 4, the second region 22 and the second region 22 are located on two opposite sides of the first region 21 in the first direction, and two sides of the first region 21 (curved region) opposite to each other in the first direction are respectively connected to the two second regions 22 (straight regions).
As shown in fig. 5, in the embodiment of the present application, the flexible cover 20 includes a cover main body 23, the cover main body 23 includes a first base portion 231 and a second base portion 232, the first base portion 231 is disposed in the first region 21, the second base portion 232 is disposed in the second region 22, and the first base portion 231 and the second base portion 232 are connected to each other. Specifically, in one embodiment, the second base portions 232 and 232 are respectively disposed on two opposite sides of the first base portion 231 in the first direction, two sides of the first base portion 231 opposite to each other in the first direction are respectively connected to the second base portions 232 and 232, and the first base portion 231 and the second base portion 232 are made of the same material.
In other embodiments, the first base portion 231 and the second base portion 232 may be formed of different materials such that the elastic modulus of the first base portion 231 is smaller than the elastic modulus of the second base portion 232. Specifically, in the embodiment, the first base portion 231 may be formed of a material having greater tensile strength and stress absorbing ability than the second base portion 232, and the second base portion 232 may be formed of a material having greater hardness and flatness than the first base portion 231.
Further, the flexible cover 20 includes a virtual bending axis L located at the first base part 231, the virtual bending axis L extending in the second direction, and the flexible cover 20 is bendable about the virtual bending axis L to make the second base part 232 and the second base part 232 opposite to each other in the third direction.
The cover main body 23 has a first side 233 and a second side 234 opposite to each other in a thickness direction thereof, the first side 233 is located on a side of the cover main body 23 away from the flexible display panel 40, external light is incident into the cover main body 23 from the first side 233, and the second side 234 is located on a side of the cover main body 23 close to the flexible display panel 40.
The flexible cover plate 20 further includes a diffuse reflection layer 24, the diffuse reflection layer 24 is disposed on the first side 233 of the cover plate main body 23, and the diffuse reflection layer 24 is used for reducing the light reflectivity of the flexible cover plate 20 to the light incident from the first side, so as to weaken the crease expression of the flexible display module 100.
Specifically, the diffuse reflection layer 24 includes a plurality of reflective particles arranged in a dispersed manner, and each reflective particle can reflect light incident from the first side and form outgoing light rays at different angles. So, reflective particle's setting makes flexible apron 20's surface form dull polish feel, compares in the smooth surface of the apron among the prior art, and reflective particle's setting makes flexible apron 20 surface form the diffuse reflection, has reduced flexible apron 20 to incident light's whole reflectivity to the crease performance of flexible display module 100 has been weakened, especially has improved the sensory effect of flexible display module 100 under the natural light.
In particular, in some embodiments, the reflective particles are formed of one or more of silicon oxide, zirconium oxide, or titanium oxide, each reflective particle has a maximum outer diameter of less than 1 micron, preferably 500 nanometers, and a spacing between any two adjacent reflective particles is greater than 500 nanometers, thereby achieving a desired reflective effect of the flexible cover sheet 20. It will be appreciated that the specific values of the outer diameter of the reflective particles and the spacing between adjacent reflective particles can be set as desired to meet the needs.
Further, the apparent form of each reflective particle is at least one of spherical, columnar, or polyhedral, and the shapes of the different reflective particles on the same cover main body 23 may be the same or different, so that the light incident from the first side forms different emission angles. In a preferred embodiment, the reflective particles have a polyhedral shape, and thus have a plurality of reflective surfaces to achieve a better diffuse reflection effect. It will be appreciated that the shape of the reflective particles is not limited thereto and may be arranged to meet different requirements according to different materials and different needs.
In some embodiments, the arrangement density of the reflective particles in the first region 21 of the flexible cover 20 is less than the arrangement density of the reflective particles in the second region 22 of the flexible cover 20, that is, the number of the reflective particles in the unit area of the first region 21 of the flexible cover 20 is less than the number of the reflective particles in the unit area of the second region 22, so that the diffuse reflection of the second region 22 of the flexible cover 20 is stronger, and the display effect of the first region 21 and the second region 22 has higher uniformity. It can be understood that the difference between the arrangement densities of the reflective particles in the first region 21 and the second region 22 of the flexible cover 20 is not limited, and may be selected according to the material of the cover body 23, the material and the shape of the reflective particles, and other parameters to meet different reflective effect requirements.
In the above embodiments, the reflective particles are formed on the first side 233 of the cover plate body 23 by means including, but not limited to, physical vapor deposition (e.g., magnetron sputtering) and evaporation. It is to be understood that the manner of forming the diffusive reflective layer 24 is not limited and can be variously employed as desired.
In some embodiments, the first side 233 and/or the second side 234 of the cover main body 23 are formed with a plurality of receiving grooves 235 having bottom walls, the receiving grooves 235 located on the same side of the cover main body 23 are spaced apart in a first direction perpendicular to the virtual bending axis L, a longitudinal extending direction of each receiving groove 235 is parallel to an extending direction of the virtual bending axis L (i.e., the second direction), and each receiving groove 235 extends from one end of the cover main body 23 to the other end of the cover main body 23 along the second direction. The flexible cover plate 20 further includes a plurality of light-blocking blocks 25 that are opaque to light, each light-blocking block 25 is filled in one of the accommodating grooves 235, and a side surface of the light-blocking block 25 facing an opening end of the accommodating groove 235 is flush with the first side 233 or the second side 234. When the diffuse reflection layer 24 is disposed on the first side 233 of the cover main body 23, the diffuse reflection layer 24 covers the light shielding block 25 in the accommodating groove 235 of the first side 233.
Thus, the light shielding blocks 25 can block the light emitted from the flexible display panel 40, and further allow the light at a specific position and a specific angle to be emitted from the gap between the adjacent light shielding blocks 25, so as to adjust the light output amount and the light output angle of the first region 21 and the second region 22 of the flexible cover plate 20, thereby improving the display effect of the flexible display module 100.
Further, since the fold is formed in the first region 21 of the flexible cover plate 20, the arrangement density of the receiving grooves 235 in the first base portion 231 located on the same side of the cover plate main body 23 is smaller than the arrangement density of the receiving grooves 235 in the second base portion 232, that is, the number of the receiving grooves 235 in the unit area of the first base portion 231 is smaller than the number of the receiving grooves 235 in the unit area of the second base portion 232, so that the consistency of the light output amount and the light output angle of the first region 21 and the second region 22 is further improved.
Specifically, in some embodiments, the light shielding block 25 is formed by one or more of a mixture of resin and color paste, a non-ferrous metal wire, an inorganic nano tube, or other light-proof materials, and a cross section of each receiving groove 235 perpendicular to the second direction is trapezoidal, quadrangular, or circular. It is to be understood that the material forming the light shielding block 25 and the shape of the receiving groove 235 are not limited thereto, and may be set as needed to satisfy different requirements.
As a preferred embodiment, the containing grooves 235 are all opened on the first side 233, a cross section of the containing groove 235 perpendicular to the second direction is an isosceles trapezoid, a width of the isosceles trapezoid in the first direction decreases from a side close to the first side 233 to a side far from the first side 233, an angle of an included angle formed by a large end of the isosceles trapezoid and the first side 233 (i.e., a base angle of the isosceles trapezoid) is 60 ° to 85 °, a width of the large end of the isosceles trapezoid in the first direction is greater than 10 microns, preferably 20 microns, and a depth of the isosceles trapezoid in the third direction is greater than or equal to 2/3 of a thickness of the cover plate main body 23 in the third direction, so as to effectively shield light.
Further, the minimum distance between two adjacent receiving grooves 235 in the first direction on the same side of the cover plate main body 23 is greater than 3 micrometers, and the minimum distance between two adjacent receiving grooves 235 in the second direction is smaller than 1.5 times of the maximum width of any one of the receiving grooves 235 in the first direction, so that the secondary diffraction phenomenon is avoided while the light shielding effect is ensured.
In other embodiments, the accommodating groove 235 may be entirely disposed on the second side 234, or may be partially disposed on the first side 233 and partially disposed on the second side 234. When the accommodating groove 235 is completely opened on the first side 233, the display angle is reduced, and when the angle of the side-view flexible display panel 40 is larger than a certain angle, the display content cannot be seen clearly, so that the peep-proof film is formed.
In some embodiments, the flexible display panel 40 includes a display substrate 41 and a color filter layer 43 covering a light emitting surface side of the display substrate 41, the display substrate 41 includes a plurality of pixel units 412 arranged in an array, the color filter layer 43 has a first color filter area arranged corresponding to the first area 21 of the flexible cover 20 and a second color filter area arranged corresponding to the second area 22 of the flexible cover 20, and the first color filter area can be bent synchronously with the flexible cover 20. The color filter layer 43 includes a light shielding portion 432 and color filter portions 434, the light shielding portion 432 defines a plurality of color filter openings, each color filter portion 434 is formed in one color filter opening, and each color filter portion 434 is disposed in correspondence with the pixel unit 412 of one display substrate 41 in the third direction. The color filter layer 43 functions to screen the white light emitted from the pixel unit 412 into a plurality of colors, so that the white light realizes the display of a color image.
Take the example that the pixel unit 412 of multiple colors includes a first color sub-pixel, a second color sub-pixel and a third color sub-pixel. Accordingly, the color filter portion 434 included in the region corresponding to the first color sub-pixel of the color filter layer 43 allows the light of the first color band to pass therethrough, the color filter portion 434 included in the region corresponding to the second color sub-pixel of the color filter layer 43 allows the light of the second color band to pass therethrough, and the color filter portion 434 included in the region corresponding to the third color sub-pixel of the color filter layer 43 allows the light of the third color band to pass therethrough. Wherein the first, second and third colors are, for example, red, green and blue.
In some embodiments, the outer diameter of each color filter portion 434 gradually changes from the side of the second color filter region away from the first color filter region to the side of the first color filter region away from the second color filter region, and the change curve of the outer diameter gradually takes the shape of a lower opening parabola. Specifically, the outer diameter of the color filter portion 434 of the second color filter region on the side away from the first color filter region gradually increases in size toward the first color filter region, reaches a maximum at the junction of the second color filter region and the first color filter region, and then gradually decreases in size toward the side away from the second color filter region. It is understood that the width of the region of the color filter portion 434 where the outer diameter size is varied in the first direction is not limited, and may be set as needed to meet different requirements.
In this way, by setting the outer diameters of the color filter portions 434 of the transition regions of the first color filter region and the second color filter region to different sizes, the uniformity of the light output amounts of the first region 21 and the second region 22 of the flexible cover plate 20 is effectively improved, and the optical compensation of the fold of the first region 21 is realized. It will be appreciated that the specific value of the outer diameter of the color filter portions 434 may be set as desired to meet different needs.
The flexible cover plate 20 and the flexible display module 100 with the same adjust the reflectivity of the first area 21 and the second area 22 by arranging the diffuse reflection layer 24 on the cover plate main body 23, and effectively reduce the crease expression of the bending area under natural light. In addition, the light shielding block 25 and the color filter portion 434 of the color filter layer 43 are arranged to increase the uniformity of the light output quantity and the light output angle of the first region 21 and the second region 22, thereby improving the display effect of the flexible display module 100.
It should be noted that when an element such as a layer, film or substrate is referred to as being "on" another layer, it can be directly on the other layer or intervening layers may also be present, unless otherwise specified, in describing the positional relationship. Further, when a layer is referred to as being "under" another layer, it can be directly under, or one or more intervening layers may also be present. It will also be understood that when a layer is referred to as being "between" two layers, it can be the only layer between the two layers, or one or more intervening layers may also be present.
Where the terms "comprising," "having," and "including" are used herein, another element may be added unless an explicit limitation is used, such as "only," "consisting of … …," etc. Unless mentioned to the contrary, terms in the singular may include the plural and are not to be construed as being one in number.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The flexible cover plate is characterized by comprising a cover plate main body, wherein the cover plate main body is provided with a first side and a second side which are arranged oppositely, the first side of the cover plate main body is provided with a diffuse reflection layer, and the diffuse reflection layer is used for reducing the light reflectivity of the flexible cover plate to light rays incident from the first side.
2. The flexible cover sheet of claim 1, wherein the diffusely reflective layer includes a plurality of reflective particles in a dispersed arrangement.
3. The flexible cover sheet of claim 2, wherein each of the reflective particles has a maximum outer diameter of less than 1 micron, and a spacing between any two adjacent reflective particles is greater than 500 nanometers;
preferably, the reflective particles are at least one of spherical, columnar, or polyhedral.
4. The flexible cover of claim 2, wherein the flexible cover has a first region and a second region located on at least one side of the first region and adjacent to the first region;
the arrangement density of the reflective particles in the first region is smaller than that of the reflective particles in the second region.
5. The flexible cover sheet of claim 1, further comprising a plurality of light blocking blocks;
the first side of the cover plate main body is provided with a plurality of accommodating grooves, each accommodating groove is filled with at least one shading block, and the diffuse reflection layer covers the shading blocks in the accommodating grooves on the first side; and/or
The second side of the cover plate main body is provided with a plurality of accommodating grooves, and each accommodating groove is filled with at least one shading block.
6. The flexible cover of claim 5, wherein the flexible cover has a first region and a second region located on at least one side of the first region and adjacent to the first region;
the flexible cover includes a virtual bending axis located in the first zone, the flexible cover being bendable about the virtual bending axis;
the plurality of accommodating grooves which are positioned on the same side of the flexible cover plate are arranged at intervals in a first direction, the lengthwise extending direction of each accommodating groove is parallel to the extending direction of the virtual bending shaft, and each accommodating groove extends from one end of the cover plate main body to the other end of the cover plate main body;
wherein the first direction is perpendicular to the virtual bending axis.
7. The flexible cover plate according to claim 6, wherein the minimum distance between two adjacent receiving grooves on the same side of the flexible cover plate is greater than 3 μm;
and the minimum distance between every two adjacent accommodating grooves is smaller than 1.5 times of the maximum width of any one accommodating groove in the first direction.
8. The flexible cover of claim 5, wherein the flexible cover has a first region and a second region located on at least one side of the first region and adjacent to the first region;
the cover plate main body includes:
a first base part provided in the first region;
a second base portion provided in the second region, the first base portion and the second base portion being connected to each other;
wherein the arrangement density of the accommodating groove arranged on the first base part is less than the arrangement density of the accommodating groove arranged on the second base part.
9. A flexible display module is characterized by comprising a display substrate and a flexible cover plate formed on the light emergent side of the display substrate;
the flexible cover plate is the flexible cover plate as claimed in any one of claims 1 to 7.
10. The flexible display module of claim 9, wherein the flexible cover has a first region and a second region located on at least one side of the first region and adjacent to the first region;
the flexible display module further comprises a color filter layer, the color filter layer is positioned on one side of the flexible cover plate far away from the diffuse reflection layer, and the color filter layer is provided with a first color filter area arranged corresponding to the first area of the flexible cover plate and a second color filter area arranged corresponding to the second area of the flexible cover plate;
the color filter layer comprises a plurality of color filter parts, and a change curve of the outer diameter of each color filter part is in a lower opening parabola shape from one side of the second color filter region far away from the first color filter region to one side of the first color filter region far away from the second color filter region.
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| CN202110721166.2A CN113470524A (en) | 2021-06-28 | 2021-06-28 | Flexible cover plate and flexible display module thereof |
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| CN202110721166.2A CN113470524A (en) | 2021-06-28 | 2021-06-28 | Flexible cover plate and flexible display module thereof |
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| CN115240560A (en) * | 2022-08-24 | 2022-10-25 | 合肥维信诺科技有限公司 | Flexible display screen and display device |
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Application publication date: 20211001 |