CN112666640B - Optical film layer and display device - Google Patents
Optical film layer and display device Download PDFInfo
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- CN112666640B CN112666640B CN202011599417.6A CN202011599417A CN112666640B CN 112666640 B CN112666640 B CN 112666640B CN 202011599417 A CN202011599417 A CN 202011599417A CN 112666640 B CN112666640 B CN 112666640B
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Abstract
The embodiment of the application discloses an optical film layer and a display device, wherein the optical film layer is arranged on the light emergent side of a display panel and comprises a first adhesive layer, and a plurality of first grooves are formed in one side surface of the optical film layer; one side surface of the second adhesive layer is meshed with the first grooves, a plurality of second grooves are formed in the other side surface of the second adhesive layer, and the extending directions of two ends of each second groove are perpendicular to the extending directions of two ends of each first groove; and the third adhesive layer is arranged on one side, far away from the first adhesive layer, of the second adhesive layer and fills the second groove. The optical film layer and the display device have the advantages that the optical film layer is attached to the light emitting side of the display panel and is directly arranged on the outer surface of the display panel, so that different optical film layers can be replaced conveniently, and the requirements of display panels with different specifications can be met.
Description
Technical Field
The application relates to the field of films, in particular to an optical film and a display device.
Background
In the course of research and practice on the prior art, the inventors of the present application found that the brightness of the display device is significantly reduced in a large viewing angle range, and the viewing angle compensation scheme of the prior art causes the brightness of the middle portion of the display device to be reduced
Disclosure of Invention
The embodiment of the application provides an optical film layer and a display device, and the technical problem that the brightness of the middle part of the display device is reduced due to the fact that the brightness of a large visual angle of the display device is increased can be solved.
The embodiment of the application provides an optical film layer, which comprises a first adhesive layer, a second adhesive layer and a plurality of second adhesive layers, wherein a plurality of first grooves are formed in one side surface of the first adhesive layer; one side surface of the second adhesive layer is meshed with the first grooves, a plurality of second grooves are formed in the other side surface of the second adhesive layer, and the extending directions of two ends of each second groove are perpendicular to the extending directions of two ends of each first groove; and the third adhesive layer is arranged on one side of the second adhesive layer, which is far away from the first adhesive layer, and fills the second groove.
Optionally, in some embodiments of the present application, the light exiting side includes a first direction and a second direction, the first direction is parallel to the ground direction, and the second direction is perpendicular to the first direction; the extending directions of two ends of the first groove are parallel to the first direction; the extending directions of two ends of the second groove are parallel to the second direction; the refractive index of the second adhesive layer is smaller than that of the first adhesive layer, and the refractive index of the second adhesive layer is smaller than that of the third adhesive layer.
Optionally, in some embodiments of the present application, the light exiting side includes a first direction and a second direction, the first direction is parallel to the ground direction, and the second direction is perpendicular to the first direction; the extending directions of two ends of the first groove are parallel to the second direction; the extending directions of two ends of the second groove are parallel to the first direction; the refractive index of the first adhesive layer is smaller than that of the second adhesive layer, and the refractive index of the third adhesive layer is smaller than that of the second adhesive layer.
Optionally, in some embodiments of the present application, the refractive index of the second adhesive layer is 1 to 1.8.
Optionally, in some embodiments of the present application, an absolute value of a difference between the first adhesive layer and the second adhesive layer is 0.02 to 0.5.
Optionally, in some embodiments of the present application, a material of the first adhesive layer and the second adhesive layer includes an ultraviolet curing adhesive.
Optionally, in some embodiments of the present application, the notches of two adjacent second grooves have a distance therebetween.
Optionally, in some embodiments of the present application, the size of the gap is 1um to 50um.
Optionally, in some embodiments of the present application, a longitudinal cross-sectional pattern of the first groove and the second groove includes at least one of a triangle, a rectangle, a trapezoid, a polygon, a U-shape, or a semicircle.
Correspondingly, the embodiment of the application further provides a display device, which comprises: the display panel comprises a light emitting side; and the surface of one side, which is far away from the second adhesive layer, of the first adhesive layer in the optical film layer is attached to the light emergent side.
The optical film layer and the display device have the advantages that the optical film layer is attached to the light emitting side of the display panel and is directly arranged on the outer surface of the display panel, so that different optical film layers can be replaced conveniently, and requirements of display panels with different specifications can be met. Adopt the different glue film stromatolite setting of refracting index to set up the recess of vertical and horizontal arrangement on the glue film, thereby play the light of dispersion cross axle direction, the demonstration luminance and the display quality of the horizontal big visual angle department of increase gather the light of vertical axis direction simultaneously, increase the light intensity in the vertical visual angle scope, supply the light of cross axle dispersion, reinforcing display quality.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below 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.
Fig. 1 is a schematic structural diagram of a display device according to a first embodiment of the present disclosure;
fig. 2 is an exploded view of a display device according to an embodiment of the present disclosure;
fig. 3 is a schematic view of a first adhesive layer structure provided in an embodiment of the present application;
fig. 4 is a schematic view of a second adhesive layer structure provided in the first embodiment of the present application;
FIG. 5 is a schematic view of an optical film structure provided in an embodiment of the present disclosure;
FIG. 6 is a first stripe-shaped groove pattern according to an embodiment of the present invention;
FIG. 7 is a third stripe-shaped groove pattern provided in accordance with an embodiment of the present invention;
FIG. 8 is a refraction diagram of light passing through the second adhesive layer according to an embodiment of the present disclosure;
FIG. 9 is a refraction chart of light passing through the third adhesive layer according to an embodiment of the present disclosure;
FIG. 10 is a schematic view of an optical film structure provided in the second embodiment of the present application;
fig. 11 is a first stripe-shaped groove arrangement pattern provided in the second embodiment of the present application;
FIG. 12 is a third stripe pattern of grooves provided in the second embodiment of the present application;
FIG. 13 is a refraction chart of light passing through the second adhesive layer according to the second embodiment of the present application;
fig. 14 is a refraction diagram of light passing through the third glue layer according to the second embodiment of the present application.
Description of reference numerals:
display devices 1, 1a; a display panel 100;
a first glue layer 210; a second adhesive layer 220;
a third adhesive layer 230; first stripe grooves 211, 211a;
a second strip-shaped groove 221; a strip-shaped protrusion 222;
a second direction 12.
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 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 application. Furthermore, it should be understood that the detailed description and specific examples, while indicating exemplary embodiments of the invention, are given by way of illustration and explanation only, and are not intended to limit the scope of the invention. In this application, where the context requires otherwise, the words "upper" and "lower" used in relation to the device in use or operation will generally refer to the upper and lower extremities of the device, particularly as oriented in the drawing figures; while "inner" and "outer" are with respect to the outline of the device.
The embodiment of the application provides an optical film layer and a display device. The following are detailed below. It should be noted that the following description of the embodiments is not intended to limit the preferred order of the embodiments.
The first embodiment,
As shown in fig. 1 and fig. 2, in the present embodiment, the display device 1 includes a display panel 100 and an optical film 200, wherein the display panel 100 includes a light-emitting side 101, the light-emitting side 101 is disposed on a surface of one side of the display panel 100 away from the backlight module, and light emitted from the backlight module passes through the display panel 100 and then displays a picture through the light-emitting side 101.
The optical film layer 200 is attached to the light-emitting side 101 of the display panel 100, that is, the optical film layer 200 is attached to the outer surface of the display panel 100, so that the technical effect of tearing and replacing the optical film layer is achieved.
Specifically, the optical film layer 200 includes a first adhesive layer 210, a second adhesive layer 220, and a third adhesive layer 230, which are sequentially stacked.
As shown in fig. 3, the first adhesive layer 210 is disposed on the light exit side 101 of the display panel 100, the surface of the first adhesive layer 210 away from the light exit side 101 is provided with a plurality of first strip-shaped grooves 211, the first strip-shaped grooves 211 are parallel to each other and are concavely disposed on the first adhesive layer 210, and the cross section of the first strip-shaped groove 211 perpendicular to the light exit side 101 is an inverted triangle.
As shown in fig. 4, the second glue layer 220 is disposed on a side surface of the first glue layer 210 far away from the display panel 100, specifically, the second glue layer 220 is opposite to a side surface of the first glue layer 210, a plurality of second strip-shaped grooves 221 are disposed between the second strip-shaped grooves 221, two adjacent second strip-shaped grooves 221 are strip-shaped protrusions 222, the second strip-shaped grooves 221 are adapted to the first strip-shaped grooves 211, that is, the strip-shaped protrusions 222 can just fill the corresponding first strip-shaped grooves 211, and since the first glue layer 210 and the second glue layer 220 are made of a glue material and have a certain elasticity, the size of the strip-shaped protrusions 222 can be slightly larger than the first strip-shaped grooves 211, so that the sidewalls of the strip-shaped protrusions 222 of the second glue layer 220 can be completely attached to the sidewalls of the first strip-shaped grooves 211 of the first glue layer 210, and light does not need to pass through an air layer when passing through the first glue layer 210 and the second glue layer 220, and the refraction effect of the optical film layer 200 is not affected.
One side of second glue film 220 keeping away from first glue film 210 is equipped with third strip recess 223, and third strip recess 223 is parallel to each other and recessed in second glue film 220, specifically, the array orientation perpendicular to of third strip recess 223 the array orientation of second strip recess 221, wherein, the longitudinal section figure of third strip recess 223 is at least one kind in trapezoidal, polygon, the U type, preferred trapezoidal and polygon.
As shown in fig. 5, the third adhesive layer 230 is disposed on a side surface of the second adhesive layer 220 away from the first adhesive layer 210, wherein the third adhesive layer 230 fills the third strip-shaped groove 223, and a side of the third adhesive layer 230 away from the second adhesive layer 220 is a smooth surface.
As shown in fig. 6 and 7, in the present embodiment, the display device 1 of the present invention is a display, and after the display device 1 is mounted, the first direction 11 of the display device 1 is set to be a direction parallel to the ground, that is, the first direction 11 is set to be a transverse direction. Let the second direction 12 of the display device 1 be a direction perpendicular to the ground, i.e. the second direction 12 is a longitudinal direction. In other preferred embodiments of the present invention, the display device may also be other mobile terminals, such as a mobile phone, a tablet, etc., taking a mobile phone as an example, in which the first direction 11 of the display device 1 is a direction parallel to the line of sight of the user, and the second direction 12 is a direction perpendicular to the line of sight of the user. Generally, the user has a high requirement for the viewing angle range parallel to his/her line of sight, i.e. a high requirement for the viewing angle in the first direction 11 and a low requirement for the viewing angle range in the second direction 12. In the prior art, the display quality of the display device in the first direction is reduced along with the increase of the viewing angle, and the user has low requirement on the viewing angle in the second direction, so in this embodiment, the brightness of the large viewing angle and the display image quality in the first direction are emphasized, and the display brightness in the second direction is not affected.
Specifically, the first strip-shaped grooves 211 on the first adhesive layer 210 are arranged along the first direction 11, that is, the extending directions of the two ends of the first strip-shaped grooves 211 are parallel to the first direction 11, and the third strip-shaped grooves 223 of the second adhesive layer 220 are arranged along the second direction 12, that is, the extending directions of the two ends of the first strip-shaped grooves 211 are parallel to the second direction 12.
The first adhesive layer 210 and the third adhesive layer 230 are high-refraction adhesive layers, and the second adhesive layer 220 is a low-refraction adhesive layer, i.e., the refractive index of the second adhesive layer 220 is smaller than that of the first adhesive layer 210 or the third adhesive layer 230. Specifically, in this embodiment, the refractive index of the second adhesive layer 220 is between 1 and 1.8, the refractive indexes of the first adhesive layer 210 and the third adhesive layer 230 are similar, and the difference between the refractive indexes and the refractive index of the second adhesive layer 220 is between 0.02 and 0.5.
As shown in fig. 8, the light-emitting side 101 passes through the first adhesive layer 210, and when the light passes through a boundary between the first adhesive layer 210 and the second adhesive layer 220, that is, when the light is emitted into the second adhesive layer 220 through the first stripe-shaped groove 211, since the refractive index of the second adhesive layer 220 is smaller than that of the first adhesive layer 210, when the light passes through the first stripe-shaped groove 211, the refraction angle will be smaller, so as to perform a "light focusing" function, and since the arrangement direction of the first stripe-shaped groove 211 is parallel to the first direction 11, the light will be emitted in a direction perpendicular to the sidewall of the first stripe-shaped groove 211, so that the light passes through the first stripe-shaped groove 211 to be longitudinally focused, thereby increasing the brightness in the second direction 12.
As shown in fig. 9, the light beam is emitted to the third adhesive layer 230 through the second adhesive layer 220, when the light beam passes through the boundary between the second adhesive layer 220 and the third adhesive layer 230, since the refractive index of the third adhesive layer 230 is greater than that of the second adhesive layer 220, when the light beam passes through the third strip-shaped grooves 223, the refraction angle of the light beam is increased, so as to achieve the technical effect of dispersing the light beam, and since the arrangement direction of the third strip-shaped grooves 223 is parallel to the second direction 12, after the light beam is emitted in the direction perpendicular to the sidewalls of the third strip-shaped grooves 223, the dispersion direction of the light beam is the first direction 11 perpendicular to the second direction 12, that is, the transverse light beam is dispersed, so as to disperse the light beam in the middle of the display device 1 to the side, thereby achieving the technical effect of increasing the brightness of the display device 1 in the wide viewing angle range. The optical film layer 200 in this embodiment can significantly improve the display brightness of the display device 1 at a viewing angle of 60 ° left and right in the first direction 11, and can effectively reduce color shift. Meanwhile, in the second direction 12, the optical film layer 200 in this embodiment can concentrate the brightness of the display device 1 in the range of 30 ° up and down, and in the normal viewing angle of the user, the display brightness and the display quality in this range are improved, and the light scattered from the middle to the sides in the first direction 11 is compensated, so that the display quality in the middle of the display device 1 is ensured.
Since the optical film layer 200 in this embodiment is directly attached to the light-emitting side 101 of the display panel 100, in order to improve the appearance of the user, the user needs to avoid seeing the texture effect on the optical film layer 200, that is, the period of the third strip-shaped groove 223 needs to be very small, and in this embodiment, the period of the third strip-shaped groove 223 is 1um to 50um.
The optical film layer and the display device have the advantages that the optical film layer is attached to the light emitting side of the display panel and is directly arranged on the outer surface of the display panel, so that different optical film layers can be replaced conveniently, and the requirements of display panels with different specifications can be met. Adopt the different glue film stromatolite setting of refracting index to set up the recess of vertical and horizontal arrangement on the glue film, thereby play the light of dispersion cross axle direction, the demonstration luminance and the display quality of the horizontal big visual angle department of increase gather the light of vertical axis direction simultaneously, increase the light intensity in the vertical visual angle scope, supply the light of cross axle dispersion, reinforcing display quality.
Example II,
As shown in fig. 10, in the present embodiment, a display device 1a of the invention has a structure substantially similar to that of the display device 1 of the first embodiment, but the difference is that the arrangement directions of the stripe-shaped grooves on the first adhesive layer 210 and the second adhesive layer 220 are different.
Specifically, the first adhesive layer 210 is disposed on the light exit side 101 of the display panel 100, the surface of the first adhesive layer 210 away from the light exit side 101 is provided with a plurality of first strip-shaped grooves 211a, the first strip-shaped grooves 211 are parallel to each other and are concavely disposed on the first adhesive layer 210, and the cross section of the first strip-shaped groove 211a perpendicular to the light exit side 101 is an inverted triangle.
One side of the second adhesive layer 220, which is far away from the first adhesive layer 210, is provided with a third strip-shaped groove 223a, the third strip-shaped grooves 223a are parallel to each other and are recessed in the second adhesive layer 220, specifically, the arrangement direction of the third strip-shaped grooves 223a is perpendicular to the arrangement direction of the second strip-shaped grooves 221.
As shown in fig. 11 and 12, the first stripe-shaped grooves 211 on the first adhesive layer 210 are arranged along the second direction 12, that is, the extending directions of the two ends of the first stripe-shaped grooves 211a are parallel to the second direction 12, and the third stripe-shaped grooves 223a of the second adhesive layer 220 are arranged along the first direction 11, that is, the extending directions of the two ends of the third stripe-shaped grooves 223a are parallel to the first direction 11.
In order to change the refraction angle of the light, in this embodiment, the first adhesive layer 210 and the third adhesive layer 230 are low-refraction adhesive layers, and the second adhesive layer 220 is a high-refraction adhesive layer, that is, the refractive index of the second adhesive layer 220 is greater than that of the first adhesive layer 210 or the third adhesive layer 230. Specifically, in this embodiment, the refractive index of the second adhesive layer 220 is between 1 and 1.8, the refractive indexes of the first adhesive layer 210 and the third adhesive layer 230 are similar, and the difference between the refractive indexes of the first adhesive layer 210 and the third adhesive layer 230 is between 0.02 and 0.5, that is, the refractive indexes of the first adhesive layer 210 and the third adhesive layer 230 are lower than the refractive index of the first adhesive layer 210 by 0.02 to 0.5.
As shown in fig. 13, when light passes through the first adhesive layer 210 from the light-emitting side 101, when the light passes through a boundary between the first adhesive layer 210 and the second adhesive layer 220, that is, when the light is emitted into the second adhesive layer 220 through the first stripe-shaped groove 211a, since the refractive index of the second adhesive layer 220 is greater than that of the first adhesive layer 210, when the light passes through the first stripe-shaped groove 211a, the refraction angle of the light becomes larger, thereby achieving a technical effect of "dispersing the light", and since the arrangement direction of the first stripe-shaped groove 211a is parallel to the second direction 12, after the light is emitted in a direction perpendicular to the sidewall of the first stripe-shaped groove 211a, the dispersion direction of the light is the first direction 11 perpendicular to the second direction 12, that is, transverse light is dispersed, and part of the light in the middle of the display device 1 is dispersed to the side, thereby achieving a technical effect of increasing the brightness of the display device 1 in a wide viewing angle range.
As shown in fig. 14, light rays are emitted from the second adhesive layer 220 to the third adhesive layer 230, when the light rays pass through the boundary between the second adhesive layer 220 and the third adhesive layer 230, since the refractive index of the third adhesive layer 230 is smaller than that of the second adhesive layer 220, when the light rays pass through the third strip-shaped grooves 223a, the refraction angle of the light rays is reduced, thereby achieving the technical effect of "gathering" the light rays, and since the arrangement direction of the third strip-shaped grooves 223a is parallel to the first direction 11, after the light rays are emitted in the direction perpendicular to the sidewalls of the third strip-shaped grooves 223a, the gathering direction of the light rays is the second direction 12 perpendicular to the first direction 11, that is, longitudinal light rays are gathered, so that the light ray brightness in the second direction, that is, the longitudinal direction, is increased.
The optical film layer 200 in this embodiment can significantly improve the display brightness of the display device 1 at a viewing angle of 60 ° left and right in the first direction 11, and can effectively reduce color shift. Meanwhile, in the second direction 12, the optical film layer 200 in this embodiment can concentrate the brightness of the display device 1 in the range of 30 ° up and down, and in the normal viewing angle of the user, the display brightness and the display quality in this range are improved, and the light scattered from the middle to the sides in the first direction 11 is compensated, so that the display quality in the middle of the display device 1 is ensured.
The optical film layer and the display device have the advantages that the optical film layer is attached to the light emitting side of the display panel and is directly arranged on the outer surface of the display panel, so that different optical film layers can be replaced conveniently, and the requirements of display panels with different specifications can be met. Adopt the different glue film stromatolite setting of refracting index to set up the recess of vertical and horizontal arrangement on the glue film, thereby play the light of dispersion cross axle direction, the demonstration luminance and the display quality of the horizontal big visual angle department of increase gather the light of vertical axis direction simultaneously, increase the light intensity in the vertical visual angle scope, supply the light of cross axle dispersion, reinforcing display quality.
The foregoing detailed description is directed to an optical film and a display device provided in the embodiments of the present application, and specific examples are used herein to illustrate the principles and implementations of the present application, and the above description of the embodiments is only provided to help understand the methods and the core ideas of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (8)
1. The utility model provides an optical film layer, locates display panel's light-emitting side, its characterized in that includes:
a plurality of first grooves are formed in one side surface of the first adhesive layer; and
one side surface of the second adhesive layer is meshed with the first grooves, a plurality of second grooves are formed in the other side surface of the second adhesive layer, and the extending directions of two ends of each second groove are perpendicular to the extending directions of two ends of each first groove;
the third adhesive layer is arranged on one side, far away from the first adhesive layer, of the second adhesive layer and fills the second groove;
the light emitting side comprises a first direction and a second direction, the first direction is parallel to the ground direction, and the second direction is perpendicular to the first direction;
the extending directions of two ends of the first groove are parallel to the first direction;
the extending directions of two ends of the second groove are parallel to the second direction;
the refractive index of the second adhesive layer is smaller than that of the first adhesive layer, and the refractive index of the second adhesive layer is smaller than that of the third adhesive layer; or
The light emitting side comprises a first direction and a second direction, the first direction is parallel to the ground direction, and the second direction is perpendicular to the first direction;
the extending directions of two ends of the first groove are parallel to the second direction;
the extending directions of two ends of the second groove are parallel to the first direction;
the refractive index of the first adhesive layer is smaller than that of the second adhesive layer, and the refractive index of the third adhesive layer is smaller than that of the second adhesive layer.
2. The optical film layer of claim 1,
the refractive index of the second adhesive layer is 1-1.8.
3. The optical film layer of claim 1,
the absolute value of the difference value between the first adhesive layer and the second adhesive layer is 0.02-0.5.
4. The optical film layer of claim 1,
the materials of the first adhesive layer and the second adhesive layer comprise ultraviolet curing adhesive.
5. The optical film layer of claim 1,
and a gap is reserved between the notches of two adjacent second grooves.
6. The optical film layer of claim 5,
the size of the space is 1 um-50 um.
7. The optical film layer of claim 1,
the longitudinal section of the first groove and the second groove includes at least one of triangle, rectangle, trapezoid, polygon, U-shape or semicircle.
8. A display device is characterized by comprising
The display panel comprises a light-emitting side; and
the optical film layer as claimed in any one of claims 1 to 7, wherein a surface of the first adhesive layer away from the second adhesive layer is attached to the light-emitting side.
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| CN202011599417.6A CN112666640B (en) | 2020-12-29 | 2020-12-29 | Optical film layer and display device |
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| CN202011599417.6A CN112666640B (en) | 2020-12-29 | 2020-12-29 | Optical film layer and display device |
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| CN112666640A CN112666640A (en) | 2021-04-16 |
| CN112666640B true CN112666640B (en) | 2023-03-28 |
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| CN114023800A (en) * | 2021-11-02 | 2022-02-08 | 深圳市华星光电半导体显示技术有限公司 | Display panel and manufacturing method thereof |
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| TW200831951A (en) * | 2006-11-29 | 2008-08-01 | Hitachi Maxell | Optical sheet used in backlight device, backlight device and display device |
| CN103969720A (en) * | 2014-05-27 | 2014-08-06 | 厦门天马微电子有限公司 | Brightness enhancing film, preparing method of brightness enhancing film, and displaying device comprising brightness enhancing film |
| CN109116623A (en) * | 2018-09-30 | 2019-01-01 | 惠科股份有限公司 | Structure of polarized light, display panel and display device |
| CN209373295U (en) * | 2019-01-23 | 2019-09-10 | 深圳市飞帆泰科技有限公司 | A kind of brightness enhancing display screen structure |
| CN111724697B (en) * | 2020-05-18 | 2023-01-24 | 明基材料有限公司 | Electroluminescent display device |
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