CN114023800A - Display panel and manufacturing method thereof - Google Patents
Display panel and manufacturing method thereof Download PDFInfo
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- CN114023800A CN114023800A CN202111290234.0A CN202111290234A CN114023800A CN 114023800 A CN114023800 A CN 114023800A CN 202111290234 A CN202111290234 A CN 202111290234A CN 114023800 A CN114023800 A CN 114023800A
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/85—Arrangements for extracting light from the devices
- H10K50/858—Arrangements for extracting light from the devices comprising refractive means, e.g. lenses
Abstract
The embodiment of the application discloses a manufacturing method of a display panel and the display panel, wherein the display panel comprises a first substrate, a second substrate arranged opposite to the first substrate and a micro-structure film group formed between the first substrate and the second substrate, the micro-structure film group comprises a first optical film and a second optical film, the first optical film comprises a plurality of first microstructures arranged at intervals, and a gap is formed between every two adjacent first microstructures; the second optical film covers the first optical film and fills the gap, and the first microstructure is used for expanding the visual angle of the display panel, so that the technical problems that the display is difficult to realize a wide visual angle and high in cost can be solved.
Description
Technical Field
The application relates to the field of batteries, in particular to a display panel and a manufacturing method thereof.
Background
Improving the panel resolution and the Light Emitting efficiency is a major development direction of Display devices such as Liquid Crystal Displays (LCDs) and Organic Light-Emitting diodes (OLEDs), but as the panel efficiency and the resolution are improved, the viewing angle performance of high-resolution displays is increasingly poor, especially the application of microcavity OLED devices, reduces the viewing angle of 1/2 brightness of top-Emitting OLED devices to a level of about ± 40 °, while the viewing angle problem of Vertical Alignment (VA) LCDs is an inherent problem.
To solve this problem, the scheme of using an external optical film to improve the wide-angle viewing angle has become the choice for high-end displays, and most commonly, a viewing angle improving film is attached to the light-emitting side of the display to achieve the purpose of improving the wide-angle viewing angle performance of the display.
However, the current viewing angle improving films have a single and regular microstructure shape, and additional film pieces are attached to the outside of the viewing angle improving films, which results in high cost, for example, a samsung VAE wide viewing angle polarizer, and the cost of a 65-inch film piece is as high as tens of dollars. For both large-size top-emitting OLEDs and large-size high-end LCDs, a low-cost and excellent-performance wide viewing angle solution is highly desirable.
Disclosure of Invention
The embodiment of the application provides a display panel and a manufacturing method thereof, which can solve the technical problems that a display is difficult to realize a wide viewing angle and high in cost.
An embodiment of the present application provides a display panel, including:
a first substrate;
a second substrate disposed opposite to the first substrate; and
the microstructure film group is formed between the first substrate and the second substrate and comprises a first optical film and a second optical film, the first optical film comprises a plurality of first microstructures arranged at intervals, and a gap is formed between every two adjacent first microstructures; the second optical film covers the first optical film and fills the gap, and the first microstructures are used for enlarging the viewing angle of the display panel.
Optionally, in some embodiments of the present application, the second optical film is formed on a light exit side of the first optical film, and a refractive index of the first optical film is smaller than a refractive index of the second optical film.
Optionally, in some embodiments of the present application, the longitudinal section width of the first microstructure is gradually tapered from the light incident side to the light exit side of the first optical film.
Optionally, in some embodiments of the present application, the side wall of the first microstructure has an inclination angle of 30 to 60 degrees.
Optionally, in some embodiments of the present application, the sidewall of the first microstructure includes a first connection segment and a second connection segment connected to one end of the first connection segment corresponding to the light exit side of the first optical film, and an inclination angle of the first connection segment and an inclination angle of the second connection segment are 25 degrees to 45 degrees.
Optionally, in some embodiments of the present application, the sidewalls of the first microstructure are perpendicular to the first substrate.
Optionally, in some embodiments of the present application, the microstructure film group further includes a third optical film disposed on a side of the second optical film away from the first optical film, a refractive index of the third optical film is smaller than a refractive index of the second optical film, and a refractive index of the third optical film is greater than 1.
Optionally, in some embodiments of the present application, the display panel is a liquid crystal display panel, and the microstructure film group is formed on the first substrate or the second substrate.
Optionally, in some embodiments of the present application, the first substrate or the second substrate includes an organic light emitting layer, and the microstructure film group is disposed on a light emitting side of the organic light emitting layer.
Optionally, in some embodiments of the present application, the first substrate includes the organic light emitting layer, and the microstructure film group is formed on the first substrate; alternatively, the first and second electrodes may be,
the first substrate comprises the organic light-emitting layer, and the microstructure film group is formed on the second substrate; alternatively, the first and second electrodes may be,
the second substrate comprises the organic light-emitting layer, and the micro-structure film group is formed on the second substrate.
The embodiment of the application further provides a manufacturing method of the display panel, which comprises the following steps:
forming a microstructure film group on a first substrate or a second substrate, wherein the microstructure film group comprises a first optical film and a second optical film, the first optical film comprises a plurality of first microstructures arranged at intervals, and a gap is formed between every two adjacent first microstructures; the second optical film covers the first optical film and fills the gap, and the first microstructures are used for expanding a visual angle;
fixing the first substrate on one side of the second substrate, so that the microstructure film group is arranged between the first substrate and the second substrate;
a display panel is obtained.
Optionally, in some embodiments of the present application, the second optical film is disposed on the light exit side of the first optical film, and the refractive index of the first optical film is smaller than that of the second optical film.
Optionally, in some embodiments of the present application, the microstructure film group further includes a third optical film disposed on a side of the second optical film away from the first optical film, a refractive index of the third optical film is smaller than a refractive index of the second optical film, and a refractive index of the third optical film is greater than 1.
The embodiment of the application adopts a display panel and a manufacturing method thereof, the display panel comprises a first substrate, a second substrate arranged opposite to the first substrate and a micro-structure film group formed between the first substrate and the second substrate, the micro-structure film group comprises a first optical film and a second optical film, the first optical film comprises a plurality of first micro-structures arranged at intervals, and a gap is formed between every two adjacent first micro-structures; the second optical film covers the first optical film and fills the gap, and the first microstructure is used for expanding the visual angle of the display panel, so that the optical film with the microstructure does not need to be attached to the light-emitting side of the display panel, and the cost can be effectively reduced.
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.
Fig. 1 is a schematic cross-sectional structural diagram of a first display panel provided in an embodiment of the present application;
FIG. 2 is a first enlarged view of region A of FIG. 1;
FIG. 3 is a second enlarged view of region A of FIG. 1;
fig. 4 is a schematic structural diagram of a second display panel provided in the embodiment of the present application;
fig. 5 is a schematic flowchart of a manufacturing method of a display panel according to an embodiment of the present application.
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 the present application, unless indicated to the contrary, the use of the directional terms "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, and more particularly to the orientation of the figures of the drawings; while "inner" and "outer" are with respect to the outline of the device.
The embodiment of the application provides a display panel and a manufacturing method thereof. 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.
Referring to fig. 1, an embodiment of the present invention provides a display panel, including a first substrate 100, a second substrate 200 disposed opposite to the first substrate 100, and a microstructure film set 300 formed between the first substrate 100 and the second substrate 200, where the microstructure film set 300 has a microstructure for realizing a wide viewing angle, and the microstructure film set 300 is disposed between the first substrate 100 and the second substrate 200, that is, a microstructure for realizing a wide viewing angle is disposed in a plane of the display panel, so that an optical film having a microstructure does not need to be attached to a light-emitting side of the display panel, and cost can be effectively reduced.
Specifically, as shown in fig. 1, the microstructure film set 300 includes a first optical film 310 and a second optical film 320, where the first optical film 310 includes a plurality of first microstructures 311 arranged at intervals, and a gap 312 is provided between two adjacent first microstructures 311; the second optical film 320 covers the first optical film 310 and fills the gap 312, and the first microstructures 311 are used to expand the viewing angle of the display panel, thereby achieving the effect of wide viewing angle.
Specifically, as shown in fig. 1, the second optical film 320 is formed on the light exit side of the first optical film 310, the refractive index of the first optical film 310 is smaller than the refractive index of the second optical film 320, light inside the display panel exits through the first optical film 310 and the second optical film 320, and the first microstructures 311 can adjust the light path, thereby realizing a wide viewing angle.
Specifically, as shown in fig. 1, the first optical film 310 may further include a first supporting layer 313, and the first microstructures 311 are disposed on one side of the first supporting layer 313 close to the second optical film 320, so that light inside the display panel is emitted through the first optical film 310 and the second optical film 320, and the gain effect of the microstructure film set 300 is improved. Of course, the first optical film 310 may only include the first microstructures 311 according to the choice of actual conditions and specific requirements, and is not limited thereto.
Specifically, as shown in fig. 1, the second optical film 320 includes a plurality of second microstructures 321, each second microstructure 321 is filled in the corresponding gap 312, and the first microstructures 311 and the second microstructures 321 cooperate to achieve a wide viewing angle effect. In this embodiment, the second optical film 320 may further include a second supporting layer 322, and the second microstructures 321 are disposed on a side of the second supporting layer 322 close to the first optical film 310, but of course, the second optical film 320 may only include the second microstructures 321 according to the choice of the actual situation and the specific requirement, and is not limited herein.
Alternatively, the material of the first optical film 310 and the second optical film 320 may be a photoresist, and of course, the material of the first optical film 310 and the second optical film 320 may be modified appropriately according to the selection of the actual situation and the specific requirement, and is not limited herein.
Optionally, with reference to fig. 1 to fig. 3, the longitudinal cross-sectional width of the first microstructure 311 is gradually reduced from the light incident side of the first optical film 310 to the light exit side. Since the longitudinal cross-sectional widths of the first microstructures 311 are gradually reduced from the light incident side of the first optical film 310 to the light exit side, the longitudinal cross-sectional width of the gap 312 between two adjacent first microstructures 311 is gradually increased from the light incident side of the first optical film 310 to the light exit side, and the longitudinal cross-sectional width of the second microstructures 321 is gradually increased from the light incident side of the first optical film 310 to the light exit side. In this embodiment, the longitudinal cross-sectional shape of the first microstructure 311 may be an arc, a triangle, a trapezoid, or other shapes, as long as the longitudinal cross-sectional width of the first microstructure 311 is gradually reduced from the first substrate 100 to the second substrate 200, which is not limited herein.
It should be noted that, in this specification, the term "longitudinal section" refers to a plane perpendicular to the first substrate 100 or the second substrate 200, and the meaning of the longitudinal section will not be repeated in the following description.
It is understood that, according to the selection of the actual situation and the specific requirement, the sidewall 3111 of the first microstructure 311 may also be perpendicular to the first substrate 100, and in this embodiment, the longitudinal cross-sectional shape of the first microstructure 311 is rectangular.
Specifically, as shown in fig. 2, the inclination angle a of the sidewall 3111 of the first microstructure 311 is 30 degrees to 60 degrees, and since the shape of the second microstructure 321 is adapted to the shape of the gap 312 between two adjacent first microstructures 311, the inclination angle a of the sidewall of the second microstructure 321 is the same as the inclination angle a of the sidewall 3111 of the first microstructure 311. In this range, the first microstructure 311 and the second microstructure 321 cooperate to increase the viewing angle, thereby effectively solving the viewing angle problem of the display. In this embodiment, the inclination angle a of the first microstructure 311 is 30 degrees, 32.5 degrees, 35 degrees, 37.5 degrees, 40 degrees, 42.5 degrees, 45 degrees, 47.5 degrees, 50 degrees, 52.5 degrees, 55 degrees, 57.5 degrees, or 60 degrees, and of course, the inclination angle a of the sidewall 3111 of the first microstructure 311 may be appropriately adjusted according to the choice of the actual situation and the specific requirement, which is not limited herein.
It should be noted that the tilt angle refers to a minimum angle when the corresponding wall surface is rotated to be parallel to the first substrate 100, and the meaning of the tilt angle will not be described repeatedly.
Specifically, as shown in fig. 3, the sidewall 3111 of the first microstructure 311 includes a first connection segment 3112 and a second connection segment 3113 connected to one end of the first connection segment 3112 corresponding to the light-emitting side of the first optical film 310, an inclination angle b of the first connection segment 3112 and an inclination angle c of the second connection segment 3113 are 25 degrees to 45 degrees, and since the shape of the second microstructure 321 is matched with the shape of the gap 312 between two adjacent first microstructures 311, the shape of the sidewall of the second microstructure 321 is matched with the shape of the sidewall 3111 of the first microstructure 311. The sidewall 3111 of the first microstructure 311 is designed to have at least two segments, and in the above range, the first microstructure 311 and the second microstructure 321 cooperate to increase the viewing angle, thereby effectively solving the viewing angle problem of the display. In this embodiment, the inclination angle b of the first connection section 3112 may be 25 degrees, 27.5 degrees, 30 degrees, 32.5 degrees, 35 degrees, 37.5 degrees, 40 degrees, 42.5 degrees or 45 degrees, and the inclination angle c of the second connection section 3113 may be 25 degrees, 27.5 degrees, 30 degrees, 32.5 degrees, 35 degrees, 37.5 degrees, 40 degrees, 42.5 degrees or 45 degrees.
Further, as shown in fig. 3, in order to better increase the viewing angle, the inclination angle b of the first connection section 3112 and the inclination angle c of the second connection section 3113 are set to be different, achieving multi-step adjustment. In this embodiment, the inclination angle b of the first connection section 3112 is smaller than the inclination angle c of the second connection section 3113, and the inclination angle b of the first connection section 3112 may also be larger than the inclination angle c of the second connection section 3113 according to the choice and specific requirements of the actual situation, which is not limited herein.
In the embodiment of the present application, if the film thickness of the first optical film 310 is larger, on one hand, the material cost is increased, and on the other hand, the light loss is also increased; if the thickness of the first optical film 310 is small, the difficulty of processing the first microstructure 311 is increased. Therefore, in order to avoid the above problem, the film thickness of the first optical film 310 is controlled to be 10 to 40 micrometers, for example, the film thickness of the first optical film 310 is 10 to 12.5 micrometers, 15 micrometers, 17.5 micrometers, 20 micrometers, 22.5 micrometers, 25 micrometers, 27.5 micrometers, 30 micrometers, 32.5 micrometers, 35 micrometers, 37.5 micrometers or 40 micrometers, and in the above film thickness range, the material cost and the optical loss can be reduced, and the processing difficulty of the first microstructure 311 can be reduced.
In the embodiment of the present application, if the film thickness of the second optical film 320 is larger, on one hand, the material cost is increased, and on the other hand, the light loss is also increased; if the film thickness of the second optical film 320 is small, the processing difficulty of the second microstructure 321 is increased. Therefore, in order to avoid the above problem, the film thickness of the second optical film 320 is controlled to be 12 to 50 micrometers, for example, the film thickness of the second optical film 320 is 12 to 12.5 micrometers, 15 to 17.5 micrometers, 20 to 22.5 micrometers, 25 to 27.5 micrometers, 30 to 32.5 to 35 micrometers, 37.5 to 40 micrometers, 42.5 to 42.5 micrometers, 45 to 47.5 to 50 micrometers. In this embodiment, the height of the second microstructure 321 is less than the film thickness of the second optical film 320.
Specifically, the height of the first microstructure 311 is smaller than the film thickness of the first optical film 310, and on this premise, if the height of the first microstructure 311 is larger, the gap 312 between two adjacent first microstructures 311 is likely to penetrate through the first optical film 310, which affects the use effect of the microstructure film set 300; if the height of the first microstructure 311 is small, the usage effect of the microstructure film assembly 300 will be affected. In order to avoid the above problem, it is preferable to set the height of the first microstructures 311 to 7 to 30 micrometers. For example, the height of the first microstructure 311 may be 7 micrometers, 10 micrometers, 12.5 micrometers, 15 micrometers, 17.5 micrometers, 20 micrometers, 20.5 micrometers, 22.5 micrometers, 25 micrometers, 27.5 micrometers, or 30 micrometers, and of course, the height of the first microstructure 311 may be appropriately adjusted according to the selection of the actual situation and the specific requirements, and is not limited herein.
It should be noted that in the embodiment of the present application, the height of the first microstructure 311 is equal to the depth of the gap 312 between two adjacent first microstructures 311, and the height of the first microstructure 311 is also equal to the height of the second microstructure 321.
Specifically, the first optical film 310 is provided with a plurality of first microstructures 311, the second optical film 320 is provided with a plurality of second microstructures 321, the first microstructures 311 and the second microstructures 321 are arranged in a staggered manner, the plurality of first microstructures 311 are distributed periodically along the first direction X, and correspondingly, the plurality of second microstructures 321 are distributed periodically along the first direction X, so that the plurality of first microstructures 311 and the plurality of second microstructures 321 form a grating-like structure, the viewing angle can be increased well, and the emergent brightness is improved. The distribution period T of the first microstructures 311 is 10 to 30 micrometers, so that the distribution period T of the first microstructures 311 is matched with the distribution period of each pixel, and each pixel is provided with a corresponding number of first microstructures 311 and second microstructures 321, thereby better realizing the effect of increasing the viewing angle. In this embodiment, the distribution period T of the first microstructures 311 may be 10 micrometers, 12.5 micrometers, 15 micrometers, 17.5 micrometers, 20 micrometers, 22.5 micrometers, 25 micrometers, 25.5 micrometers, 27.5 micrometers or 30 micrometers, and of course, the distribution period T of the first microstructures 311 may be appropriately adjusted according to the selection and specific requirements of the actual situation, and is not limited herein.
Specifically, the refractive index of the first optical film 310 is 1.4 to 1.5, and the refractive index of the second optical film 320 is 1.65 to 1.75. For example, the refractive index of the first optical film 310 may be 1.4, 1.41, 1.42, 1.43, 1.44, 1.45, 1.46, 1.47, 1.48, 1.49, or 1.5, and the refractive index of the second optical film 320 may be 1.65, 1.66, 1.67, 1.68, 1.69, 1.70, 1.71, 1.72, 1.73, 1.74, or 1.75. Of course, the refractive index of the first optical film 310 and the refractive index of the second optical film 320 may be appropriately adjusted according to the selection of the actual situation and the specific requirement, as long as the refractive index of the first optical film 310 is smaller than the refractive index of the second optical film 320, which is not limited herein.
As shown in fig. 1, in order to further increase the using effect of the micro-structured film set 300, the micro-structured film set 300 further includes a third optical film 330 disposed on a side of the second optical film 320 far away from the first optical film 310, the refractive index of the third optical film 330 is smaller than the refractive index of the second optical film 320, and the refractive index of the third optical film 330 is greater than 1, so as to achieve a better gain effect. In this embodiment, the material of the third optical film 330 may be photoresist, silicon oxide, or silicon oxynitride.
Specifically, when air is disposed above the third optical film 330, the refractive index of the third optical film 330 is preferably set to be greater than 1 and less than 1.55, for example, the refractive index of the third optical film 330 is 1.1, 1.2, 1.3, 1.4 or 1.5, so as to improve the effect of increasing the viewing angle of the microstructure film group 300; when a glass or plastic substrate is disposed above the third optical film 330 (i.e., the second substrate 200 includes a glass or plastic substrate), the refractive index of the third optical film 330 is preferably set to be greater than 1.5 and less than 1.6, for example, the refractive index of the third optical film 330 is 1.51, 1.52, 1.53, 1.54, 1.55, 1.56, 1.57, 1.58 or 1.59, so as to ensure the effect of increasing the viewing angle of the microstructure film group 300.
As shown in fig. 1 and fig. 4, in this embodiment, the light-emitting side of the display panel is a side corresponding to the second substrate 200, and accordingly, the first optical film 310, the second optical film 320 and the third optical film 330 are sequentially disposed in the microstructure film group 300 from the first substrate 100 to the second substrate 200. Of course, according to the selection and specific requirements of the actual situation, the light-emitting side of the display panel may also be the side corresponding to the first substrate 100, and accordingly, the first optical film 310, the second optical film 320 and the third optical film 330 are sequentially disposed in the direction from the second substrate 200 to the first substrate 100 in the micro-structural film group 300.
Specifically, the display panel is a liquid crystal display panel, and the microstructure film set 300 is formed on the first substrate 100 or the second substrate 200.
Specifically, as shown in fig. 1, the light-emitting side of the display panel is a side corresponding to the second substrate 200, and when the first substrate 100 is an array substrate having pixel electrodes and the second substrate 200 is a symmetric substrate having color filter layers and common electrodes, the microstructure film set 300 may be formed on the first substrate 100 or the second substrate 200; when the first substrate 100 is a COA (Color Filter On Array, integrated technology in which a Color Filter is integrated with an Array substrate) substrate having a pixel electrode and a Color Filter layer and the second substrate 200 is a symmetric substrate having a common electrode, the microstructure film group 300 may be formed On the first substrate 100 or the second substrate 200; when the first substrate 100 is a symmetric substrate with a common electrode and the second substrate 200 is a COA substrate with a pixel electrode and a color filter layer, the microstructure film assembly 300 may be disposed on the first substrate 100 or the second substrate 200.
The light emitting side of the display panel may also be a side corresponding to the first substrate 100, and when the second substrate 200 is an array substrate having pixel electrodes and the first substrate 100 is a symmetric substrate having color filter layers and common electrodes, the microstructure film group 300 may be formed on the first substrate 100 or the second substrate 200; when the second substrate 200 is a COA (Color Filter On Array, integrated technology in which a Color Filter is integrated with an Array substrate) substrate having a pixel electrode and a Color Filter layer, and the first substrate 100 is a symmetric substrate having a common electrode, the microstructure film group 300 may be formed On the first substrate 100 or the second substrate 200; when the second substrate 200 is a symmetric substrate with a common electrode and the first substrate 100 is a COA substrate with a pixel electrode and a color filter layer, the microstructure film assembly 300 may be disposed on the first substrate 100 or the second substrate 200.
Specifically, as shown in fig. 4, the first substrate 100 or the second substrate 200 includes an organic light emitting layer 400, that is, the display panel is an OLED display panel, and the micro-structural film group 300 is disposed on the light emitting side of the organic light emitting layer 400. Specifically, when the first substrate 100 includes the organic light emitting layer 400, the micro-structural film group 300 may be formed on the first substrate 100; when the first substrate 100 includes the organic light emitting layer 400, the micro-structural film group 300 may be formed on the second substrate 200; when the second substrate 200 includes the organic light emitting layer 400, the micro-structural film group 300 may be formed on the second substrate 200. In this embodiment, the organic light emitting layer 400 may include a red light emitting layer 410, a green light emitting layer 420, and a blue light emitting layer 430.
Referring to fig. 5, in combination with fig. 1 and fig. 4, an embodiment of the present invention further provides a method for manufacturing the display panel, including the following steps:
step B1, forming a microstructure film set 300 on the first substrate 100 or the second substrate 200, where the microstructure film set 300 includes a first optical film 310 and a second optical film 320, the first optical film 310 includes a plurality of first microstructures 311 arranged at intervals, and a gap 312 is formed between two adjacent first microstructures 311; the second optical film 320 covers the first optical film 310 and fills the gap 312.
In the embodiment of the present application, the specific position of the microstructure film set 300 may be set according to the selection of the actual situation and the specific requirement.
As shown in fig. 1, if the manufactured display panel is a liquid crystal display panel, the microstructure film set 300 may be disposed on the first substrate 100 or the second substrate 200. Specifically, when the first substrate 100 is used to fabricate an array substrate having pixel electrodes and the second substrate 200 is used to fabricate a symmetric substrate having a color filter layer and a common electrode, the microstructure film group 300 may be formed on the first substrate 100 or the second substrate 200; when the first substrate 100 is used to fabricate a COA substrate having a pixel electrode and a color filter layer and the second substrate 200 is used to fabricate a symmetric substrate having a common electrode, the microstructure film group 300 may be formed on the first substrate 100 or the second substrate 200; when the first substrate 100 is used to fabricate a symmetric substrate having a common electrode and the second substrate 200 is used to fabricate a COA substrate having a pixel electrode and a color filter layer, the microstructure film group 300 may be formed on the first substrate 100 or the second substrate 200.
As shown in fig. 4, if the manufactured display panel is an OLED display panel, the first substrate 100 or the second substrate 200 includes an organic light emitting layer 400, and the microstructure film group 300 is disposed on a light emitting side of the organic light emitting layer 400. Specifically, when the first substrate 100 includes the organic light emitting layer 400, the microstructure film group 300 may be formed on the first substrate 100; when the first substrate 100 includes the organic light emitting layer 400, the micro structure film group 300 may be formed on the second substrate 200; when the second substrate 200 includes the organic light emitting layer 400, the micro structure film group 300 may be formed on the second substrate 200.
Step B2, fixing the first substrate 100 on one side of the second substrate 200, such that the microstructure film set 300 is disposed between the first substrate 100 and the second substrate 200.
And step B3, obtaining the display panel.
Specifically, the second optical film 320 is formed on the light exit side of the first optical film 310, the refractive index of the first optical film 310 is smaller than the refractive index of the second optical film 320, light inside the display panel exits through the first optical film 310 and the second optical film 320, and the first microstructure 311 can adjust a light path, thereby realizing a wide viewing angle.
Specifically, the micro-structured film set 300 further includes a third optical film 330 disposed on a side of the second optical film 320 far away from the first optical film 310, a refractive index of the third optical film 330 is smaller than a refractive index of the second optical film 320, and the refractive index of the third optical film 330 is greater than 1.
Specifically, the step of forming the microstructure film group 300 on the first substrate 100 or the second substrate 200 includes:
step B11, forming a first photoresist on the first substrate 100 or the second substrate 200 by coating, and performing exposure and development processes on the first photoresist, thereby forming the first optical film 310;
step B12, coating or ink-jet printing a second photoresist on the first optical film 310 to form a second optical film 320;
step B13, a third optical film 330 is formed on the second optical film 320. In this embodiment, the third optical film 330 may be omitted according to the selection of the actual situation and the specific requirement setting. In this embodiment, the corresponding first microstructure 311 and the second microstructure 321 can be easily realized in the plane by a simple photolithography process and a secondary photoresist covering, so that the first microstructure 311 and the second microstructure 321 can correspond to the corresponding sub-pixel regions, and the alignment precision is within ± 3 micrometers; the alignment precision of the scheme of externally attaching the optical film is +/-300 microns, and compared with the scheme of forming the micro-structural film group 300 in the plane in the embodiment of the application, the alignment precision is better.
The display panel and the manufacturing method thereof provided by the embodiments of the present application are described in detail above, and the principle and the implementation manner of the present application are explained by applying specific examples herein, and the description of the embodiments above is only used to help understanding the method and the core idea 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 (13)
1. A display panel, comprising:
a first substrate;
a second substrate disposed opposite to the first substrate; and
the microstructure film group is formed between the first substrate and the second substrate and comprises a first optical film and a second optical film, the first optical film comprises a plurality of first microstructures arranged at intervals, and a gap is formed between every two adjacent first microstructures; the second optical film covers the first optical film and fills the gap, and the first microstructures are used for enlarging the viewing angle of the display panel.
2. The display panel according to claim 1, wherein the second optical film is formed on a light exit side of the first optical film, and a refractive index of the first optical film is smaller than a refractive index of the second optical film.
3. The display panel of claim 1, wherein the first microstructures have a longitudinal cross-sectional width that tapers from the light-in side of the first optical film toward the light-out side of the first optical film.
4. The display panel according to claim 3, wherein the first microstructures have sidewalls inclined at an angle of 30 to 60 degrees.
5. The display panel according to claim 3, wherein the side wall of the first microstructure comprises a first connecting section and a second connecting section connected to one end of the first connecting section corresponding to the light-emitting side of the first optical film, and an inclination angle of the first connecting section and an inclination angle of the second connecting section are 25 degrees to 45 degrees.
6. The display panel of claim 2, wherein the sidewalls of the first microstructures are perpendicular to the first substrate.
7. The display panel of claim 2, wherein the micro-structured film set further comprises a third optical film disposed on a side of the second optical film away from the first optical film, wherein a refractive index of the third optical film is smaller than a refractive index of the second optical film, and the refractive index of the third optical film is greater than 1.
8. The display panel according to any one of claims 1 to 7, wherein the display panel is a liquid crystal display panel, and the microstructure film group is formed on the first substrate or the second substrate.
9. The display panel according to any one of claims 1 to 7, wherein the first substrate or the second substrate includes an organic light emitting layer, and the micro-structural film group is disposed on a light emitting side of the organic light emitting layer.
10. The display panel according to claim 9, wherein the first substrate includes the organic light emitting layer, and the micro-structural film group is formed on the first substrate; alternatively, the first and second electrodes may be,
the first substrate comprises the organic light-emitting layer, and the microstructure film group is formed on the second substrate; alternatively, the first and second electrodes may be,
the second substrate comprises the organic light-emitting layer, and the micro-structure film group is formed on the second substrate.
11. A manufacturing method of a display panel is characterized by comprising the following steps:
forming a microstructure film group on a first substrate or a second substrate, wherein the microstructure film group comprises a first optical film and a second optical film, the first optical film comprises a plurality of first microstructures arranged at intervals, and a gap is formed between every two adjacent first microstructures; the second optical film covers the first optical film and fills the gap, and the first microstructures are used for expanding a visual angle;
fixing the first substrate on one side of the second substrate, so that the microstructure film group is arranged between the first substrate and the second substrate;
a display panel is obtained.
12. The method for manufacturing a display panel according to claim 11, wherein the second optical film is provided on a light exit side of the first optical film, and a refractive index of the first optical film is smaller than a refractive index of the second optical film.
13. The method for manufacturing the display panel according to claim 12, wherein the micro-structural film group further comprises a third optical film disposed on a side of the second optical film away from the first optical film, a refractive index of the third optical film is smaller than a refractive index of the second optical film, and the refractive index of the third optical film is greater than 1.
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