CN115097665A - Display panel, preparation method thereof and display device - Google Patents
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- CN115097665A CN115097665A CN202210815511.3A CN202210815511A CN115097665A CN 115097665 A CN115097665 A CN 115097665A CN 202210815511 A CN202210815511 A CN 202210815511A CN 115097665 A CN115097665 A CN 115097665A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 230000010287 polarization Effects 0.000 claims abstract description 77
- 238000010521 absorption reaction Methods 0.000 claims abstract description 24
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 21
- 210000002858 crystal cell Anatomy 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 9
- 239000000758 substrate Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 8
- 230000000007 visual effect Effects 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 71
- 238000010586 diagram Methods 0.000 description 13
- 239000002994 raw material Substances 0.000 description 13
- 238000004519 manufacturing process Methods 0.000 description 9
- 239000004372 Polyvinyl alcohol Substances 0.000 description 5
- 229920002451 polyvinyl alcohol Polymers 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 239000011521 glass Substances 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1323—Arrangements for providing a switchable viewing angle
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/13363—Birefringent elements, e.g. for optical compensation
Abstract
The invention provides a display panel, a preparation method thereof and a display device, wherein the display panel is provided with a light-emitting side, the display panel at least comprises a liquid crystal box, a first polarizing structure, a second polarizing structure and a visual angle expanding layer, wherein the liquid crystal box is provided with a first side and a second side which are opposite, the first polarizing structure and the second polarizing structure are respectively arranged on the first side and the second side, and has a perpendicular absorption axis, one of the first and second polarization structures includes a compensation film, a viewing angle expansion layer is disposed on the light-emitting side, and configured to increase an exit angle of light exiting from the light exit side, the present invention can improve the efficiency of the display device by additionally providing a viewing angle expansion layer in the display panel, the function of the compensation film of the other one of the first polarization structure and the second polarization structure which can not be removed due to the fact that the size of the display panel can not be matched is compensated, and the side light-emitting effect of the display panel is guaranteed.
Description
Technical Field
The invention relates to the technical field of display panels, in particular to a display panel, a preparation method thereof and a display device.
Background
With the continuous development of electronic technology, more and more application scenes in life need to be used for a display panel, and how to ensure the display effect of the display panel is a problem to be solved at present based on the fact that the display panel needs to be used for the display panel.
Disclosure of Invention
In order to solve the above problems or other problems, the present invention provides the following technical solutions.
In a first aspect, the present invention provides a display panel having a light exit side, the display panel at least comprising:
a liquid crystal cell having opposing first and second sides;
the first polarizing structure and the second polarizing structure are respectively arranged on the first side and the second side and have perpendicular absorption axes, and one of the first polarizing structure and the second polarizing structure comprises a compensation film; and the number of the first and second groups,
a viewing angle expanding layer disposed on the light exit side, the viewing angle expanding layer configured to increase an exit angle of light exiting from the light exit side.
According to the display panel of an embodiment of the invention, the viewing angle enlarging layer is disposed on the first polarization structure, and includes a first refraction layer and a second refraction layer stacked on the first polarization structure, the first refraction layer has a first refractive index, the second refraction layer has a second refractive index, wherein the first refractive index is smaller than the second refractive index, and a junction of the first refraction layer and the second refraction layer has an inclined surface.
According to the display panel of the embodiment of the invention, a first included angle is formed between the inclined plane and the first polarization structure, and the angle of the first included angle is between 0 ° and 90 °.
According to the display panel of an embodiment of the invention, the first refraction layer has a flat portion and a plurality of protruding portions disposed on the flat portion, and the inclined surface is located on the protruding portions.
According to the display panel of the embodiment of the invention, the plurality of convex parts extend along the first direction and are arranged at intervals in the second direction, and the first direction is perpendicular to the second direction.
According to the display panel of the embodiment of the invention, the plurality of protruding parts are arranged in an array.
According to the display panel of an embodiment of the invention, the display panel further includes a backlight module, and the backlight module is disposed below the second polarization structure.
In a second aspect, the present invention provides a method for manufacturing a display panel, the method at least comprising:
providing a liquid crystal cell having opposing first and second sides;
attaching a first polarization structure and a second polarization structure to the first side and the second side respectively, wherein the first polarization structure and the second polarization structure have perpendicular absorption axes, and one of the first polarization structure and the second polarization structure comprises a compensation film; and the number of the first and second groups,
attaching a viewing angle expansion layer to a light exit side of the display panel, the viewing angle expansion layer configured to increase an exit angle of light exiting from the light exit side.
According to the manufacturing method of an embodiment of the invention, before the step of attaching the viewing angle expansion layer to the light-emitting side of the display panel, the manufacturing method further includes:
forming a second refractive layer on the substrate, the second refractive layer having a second refractive index;
forming a plurality of grooves extending in the second refractive layer in a longitudinal direction; and the number of the first and second groups,
forming a first refraction layer on the second refraction layer, the first refraction layer having protrusions located in the plurality of grooves and flat portions located above the plurality of protrusions;
wherein the first refractive layer has a first refractive index smaller than the second refractive index, and the groove has a slope.
In a third aspect, the invention provides a display device comprising at least a display panel as defined in any one of the above.
The beneficial effects of the invention are as follows: the invention provides a display panel, a preparation method thereof and a display device, wherein the display panel is provided with a light-emitting side, the display panel at least comprises a liquid crystal box, a first polarizing structure, a second polarizing structure and a visual angle expanding layer, wherein the liquid crystal box is provided with a first side and a second side which are opposite, the first polarizing structure and the second polarizing structure are respectively arranged on the first side and the second side, and has a perpendicular absorption axis, one of the first and second polarization structures includes a compensation film, a viewing angle expansion layer is disposed on the light-emitting side, and configured to increase an exit angle of light exiting from the light exit side, the present invention can improve the efficiency of the display device by additionally providing a viewing angle expansion layer in the display panel, the function of the compensation film of the other one of the first polarization structure and the second polarization structure which can not be removed due to the fact that the size of the display panel can not be matched is compensated, and the side light-emitting effect of the display panel is guaranteed.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the embodiments according to the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without inventive effort.
Fig. 1 is a schematic cross-sectional view of a display panel according to an embodiment of the invention.
Fig. 2 is a schematic structural diagram of a raw material of a polarization structure provided according to an embodiment of the present invention.
Fig. 3 is a schematic cross-sectional structure diagram of a first polarization structure according to an embodiment of the present invention.
Fig. 4 is a schematic cross-sectional view of a viewing angle enlarging layer according to an embodiment of the present invention.
Fig. 5 is a schematic top view of a viewing angle enlarging layer according to an embodiment of the disclosure.
Fig. 6 is a schematic cross-sectional view of a viewing angle enlarging layer according to another embodiment of the present invention.
Fig. 7 is a schematic top view of a viewing angle enlarging layer according to another embodiment of the disclosure.
Fig. 8 is a schematic flow chart of a method for manufacturing a display panel according to an embodiment of the present invention.
Fig. 9 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on those shown in the drawings, merely for convenience of description and simplification of the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
In the present invention, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation that the first and second features are not in direct contact, but are in contact via another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.
Referring to fig. 1, fig. 1 is a schematic cross-sectional view illustrating a display panel 100 according to an embodiment of the invention, in which components and relative positions of the components can be visually seen.
As shown in fig. 1, the display panel 100 at least includes a liquid crystal cell 110, a first polarization structure 120, a second polarization structure 130 and a viewing angle enlarging layer 140, and then, the components of the display panel 100 will be described in detail with reference to fig. 1.
The liquid crystal cell 110 has a first side 110a and a second side 110b opposite to each other, and specifically, the liquid crystal cell 110 has a plurality of liquid crystals (not shown).
The first polarization structure 120 and the second polarization structure 130 are respectively disposed on the first side 110a and the second side 110b, specifically, the first polarization structure 120 has a first absorption axis, the second polarization structure 130 has a second absorption axis, and the first absorption axis and the second absorption axis are perpendicular to each other.
In the case of a Liquid Crystal Display (LCD) panel, a Polarizer (Polarizer) is used, and the Polarizer has an absorption axis generally parallel to the stretching direction of its raw material, and when light passes through the Polarizer, the Polarizer absorbs light parallel to the absorption axis and only allows light perpendicular to the absorption axis to pass through, thereby converting natural light into linearly polarized light.
Furthermore, the absorption axes of the first polarization structure 120 and the second polarization structure 130 attached to the two sides of the liquid crystal cell 110 are perpendicular to each other, so that the linearly polarized light passing through the second polarization structure 130 is further absorbed by the first polarization structure 120 without applying a voltage to the display panel 100, so that the display panel 100 is in a normally black mode, and thus, the display panel 100 may have a higher contrast ratio in a dark state, and the influence on the display effect of the display panel 100 when the pixel is damaged may be reduced.
Further, the size of the display panel is becoming larger due to the continuous progress of electronic technology, and at present, 100-inch display panels can be mass-produced, and further, the size of the glass substrate of the existing display panel can be made 130-inch or larger.
Referring to fig. 2 illustrating a schematic structural diagram of a raw material 200 of a polarization structure according to an embodiment of the present invention, as shown in fig. 2, the raw material 200 of a polarization structure is produced and prepared in a roll form, wherein the raw material 200 has a stretching direction Y and a width D, and the raw material 200 is further cut to obtain a polarization structure with a predetermined size.
Specifically, as shown in fig. 2, the long side a of the polarization structure 1 cut out from the raw material 200 is perpendicular to the stretching direction Y, and the short side b of the polarization structure 1 is parallel to the stretching direction Y, further, the long side a of the polarization structure 2 cut out from the raw material 200 is parallel to the stretching direction Y, and the short side b of the polarization structure 2 is perpendicular to the stretching direction Y, the long side a of the polarization structure 1 is equal to the long side a of the polarization structure 2, and the short side b of the polarization structure 1 is equal to the short side b of the polarization structure 2, since the absorption axis of the polarizer is parallel to the stretching direction Y, when the polarization structure 1 and the polarization structure 2 are used in combination, the absorption axes of the polarization structure 1 and the polarization structure 2 attached to both sides of the liquid crystal cell can be perpendicular to each other.
However, as shown in fig. 2, the size of the long side a of the polarizing structure 1 perpendicular to the absorption axis of the polarizing structure 2 is limited by the width D of the raw material 200, so that the conventional polarizer can only support 105 inches, and cannot be used to prepare a larger-sized display panel with the 130-inch glass substrate.
The inventor of the present invention has found that in some production modes, a raw material having an absorption axis parallel to the width direction of the web can be produced, and when the raw material is used in combination with the raw material 200, a display panel with a larger size can be produced in combination with a 130-inch glass substrate. That is, in the embodiment of the present invention, the display panel 100 may be up to 130 inches or more.
Further, the inventors of the present invention have found that, in the process of manufacturing the display panel 100, a compensation film is required to be used to increase the display viewing angle of the display panel 100, and generally, the compensation film is required to match the absorption axis of the corresponding polarizer, and although the preparation of the polarizer raw material is improved, the preparation of the compensation film does not break through the bottleneck, that is, in the embodiment of the present invention, only one of the first polarization structure 120 and the second polarization structure 130 has the compensation film.
Specifically, please refer to fig. 3, which is a schematic cross-sectional view of a first polarization structure 120 according to an embodiment of the present invention. It should be noted that, in the embodiment of the present invention, the absorption axis of the first polarization structure 120 is parallel to the long side thereof, and therefore, the first polarization structure 120 has the compensation film 122.
Referring back to fig. 1, it should be noted that, in order to ensure the side light emitting effect of the display panel 100, the inventor proposes to additionally add a viewing angle enlarging layer 140 in the display panel 100 to compensate for the function of a compensation film of the second polarization structure that is not provided because the size of the display panel 100 cannot be matched, specifically, the viewing angle enlarging layer 140 is disposed on the light emitting side and configured to increase the exit angle of the light emitted from the light emitting side to increase the display viewing angle of the display panel 100, so as to ensure the side light emitting effect of the display panel 100.
Specifically, as shown in fig. 1, in the embodiment of the present invention, the viewing angle enlarging layer 140 is disposed on the first polarizing structure 120.
Further, referring to fig. 4 and 5, fig. 4 and 5 respectively show a cross-sectional structure diagram and a top view structure diagram of the viewing angle enlarging layer 140 according to an embodiment of the present invention, wherein the top view structure diagram is obtained by cutting the viewing angle enlarging layer 140 with reference to a line xx' in the cross-sectional structure diagram.
As shown in fig. 4 and 5, the viewing angle enlarging layer includes a first refractive layer 141 and a second refractive layer 142 which are stacked on the first polarizing structure 120, the first refractive layer 141 has a first refractive index, the second refractive layer 142 has a second refractive index, wherein the first refractive index is smaller than the second refractive index, and, as shown in fig. 4, a boundary of the first refractive layer 141 and the second refractive layer 142 has a slope S.
It should be noted that, the light emitted from the first polarization structure 120 passes through the first refraction layer 141 to reach the inclined plane S, and then further passes through the second refraction layer 142, and since the first refractive index of the first refraction layer 141 is smaller than the second refractive index of the second refraction layer 142, the emission angle of the emitted light is increased, that is, the display viewing angle of the display panel 100 is increased, and the side light emitting effect of the display panel 100 is ensured.
Specifically, as shown in fig. 4, a first included angle c is formed between the inclined plane S and the first polarization structure 120, and the angle of the first included angle c is between 0 ° and 90 °, that is, the first included angle c is an acute angle.
Referring to fig. 4, in the embodiment of the invention, the first refractive layer 141 has a flat portion (not labeled) and a plurality of convex portions (not labeled) disposed on the flat portion, and specifically, the slope S is disposed on the convex portions. Further, in the present embodiment, as shown in fig. 5, the plurality of protrusions extend along the first direction X1 and are arranged at intervals in the second direction X2, and the first direction X1 is perpendicular to the second direction X2.
Further, referring to fig. 6 and 7, fig. 6 and 7 respectively show a cross-sectional structure diagram and a top view structure diagram of the viewing angle enlarging layer 140 according to another embodiment of the present invention, wherein the top view structure diagram is obtained by cutting the viewing angle enlarging layer 140 with reference to a line xx' in the cross-sectional structure diagram.
As shown in fig. 6 and 7, unlike the above-described embodiment, in the present embodiment, a plurality of protrusions are arranged in an array along a first direction X1 and a second direction X2, wherein the first direction X1 is perpendicular to the second direction X2.
It should be understood that the shape of the above-mentioned convex portion is not limited by the embodiment of the present invention.
Further, referring to fig. 1, in an embodiment of the invention, the display panel 100 further includes a Backlight Module 150(Backlight Module), the Backlight Module 150 is disposed below the second polarization structure 130, wherein the Backlight Module 150 is configured to generate a Backlight (Backlight) required by the display panel 100 for displaying.
Further, referring to fig. 3, as shown in fig. 3, the first polarization structure 120 includes, in addition to the compensation film 122, an adhesive 121, a polyvinyl alcohol layer 123(PVA), and a protection layer 124, wherein the adhesive 121 is used to attach the first polarization structure 120 to the first side 110a of the liquid crystal cell 110, the polyvinyl alcohol layer 123 is a main film layer for realizing polarization, that is, used to absorb light parallel to the absorption axis direction of the first polarization structure 120 and only allow light perpendicular to the absorption axis direction of the first polarization structure 120 to pass through, and the protection layer 124 is used to protect the adhesive 121, the compensation film 122, and the polyvinyl alcohol layer 123.
It should be understood that, although not shown, the second polarizing structure 130 may also have the adhesive, the polyvinyl alcohol layer and the protective layer, and the film layers may be correspondingly added, deleted and transposed as required, which is not limited by the present invention.
Referring to fig. 8, fig. 8 is a schematic flow chart illustrating a manufacturing method of a display panel 100 according to an embodiment of the invention, and as shown in fig. 8, the manufacturing method may specifically include the following steps:
liquid crystal cell providing step S101: providing a liquid crystal cell 110, the liquid crystal cell 110 having opposing first and second sides 110a, 110 b;
a polarizing structure attaching step S102: attaching a first polarization structure 120 and a second polarization structure 130 to the first side 110a and the second side 110b, respectively, the first polarization structure 120 and the second polarization structure 130 having perpendicular absorption axes, and one of the first polarization structure 120 and the second polarization structure 130 including a compensation film;
viewing angle expanding layer attaching step S103: the viewing angle expansion layer 140 is attached to the light exit side of the display panel 100, and the viewing angle expansion layer 140 is configured to increase an exit angle of light exiting from the light exit side.
Specifically, before the step of attaching the viewing angle expanding layer S103, the viewing angle expanding layer 140 needs to be formed, and referring to fig. 4 or fig. 6, the process of forming the viewing angle expanding layer 140 may specifically include the following steps:
forming a second refractive layer 142 on the substrate 143, the second refractive layer 142 having a second refractive index;
forming a plurality of grooves extending in the second refraction layer 142 in the longitudinal direction; and (c) a second step of,
forming a first refractive layer 141 on the second refractive layer 142, the first refractive layer 141 having protrusions positioned in the plurality of grooves and a flat portion positioned above the plurality of protrusions;
wherein the first refractive layer 141 has a first refractive index smaller than the second refractive index, and the grooves have slopes S.
In light of the foregoing, embodiments of the present invention provide a display panel 100 and a method for manufacturing the same, the display panel 100 having a light-emitting side, and the display panel 100 at least comprising a liquid crystal cell 110, a first polarizing structure 120, a second polarizing structure 130, and a viewing angle enlarging layer 140, wherein the liquid crystal cell 110 has a first side 110a and a second side 110b opposite to each other, the first polarizing structure 120 and the second polarizing structure 130 are respectively disposed on the first side 110a and the second side 110b and have perpendicular absorption axes, one of the first polarizing structure 120 and the second polarizing structure 130 comprises a compensation film, the viewing angle enlarging layer 140 is disposed on the light-emitting side and is configured to enlarge an exit angle of light exiting from the light-emitting side, the embodiments of the present invention compensate for a function of the compensation film of the other one of the first polarizing structure 120 and the second polarizing structure 130 that is removed due to being unable to match a size of the display panel 100 by additionally adding the viewing angle enlarging layer 140 in the display panel 100, the side light emitting effect of the display panel 100 is ensured.
Referring to fig. 9, fig. 9 is a schematic structural diagram of a display device 500 according to an embodiment of the invention, in which components and relative positions of the components can be visually seen.
As shown in fig. 9, the display device 500 includes a display panel 510, wherein the display panel 510 may be the display panel 100 as described in the above embodiments.
In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by using equivalents or equivalent substitutions fall within the protection scope of the claims of the present invention.
In summary, although the preferred embodiments of the present invention have been described above, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore, the scope of the present invention shall be determined by the appended claims.
Claims (10)
1. A display panel having a light exit side, the display panel comprising at least:
a liquid crystal cell having opposing first and second sides;
the first polarization structure and the second polarization structure are respectively arranged on the first side and the second side and have perpendicular absorption axes, and one of the first polarization structure and the second polarization structure comprises a compensation film; and (c) a second step of,
a viewing angle expanding layer disposed on the light exit side, the viewing angle expanding layer configured to increase an exit angle of light exiting from the light exit side.
2. The display panel according to claim 1, wherein the viewing angle enlarging layer is disposed on the first polarization structure, and comprises a first refractive layer and a second refractive layer stacked on the first polarization structure, the first refractive layer has a first refractive index, the second refractive layer has a second refractive index, wherein the first refractive index is smaller than the second refractive index, and a junction of the first refractive layer and the second refractive layer has a slope.
3. The display panel according to claim 2, wherein the inclined plane and the first polarization structure have a first included angle therebetween, and the first included angle is between 0 ° and 90 °.
4. The display panel according to claim 2, wherein the first refractive layer has a flat portion and a plurality of convex portions provided on the flat portion, and wherein the slopes are located on the convex portions.
5. The display panel according to claim 4, wherein the plurality of protrusions extend in a first direction and are spaced apart in a second direction, and the first direction is perpendicular to the second direction.
6. The display panel according to claim 4, wherein a plurality of the convex portions are arranged in an array.
7. The display panel according to claim 2, wherein the display panel further comprises a backlight module disposed below the second polarization structure.
8. A preparation method of a display panel is characterized by at least comprising the following steps:
providing a liquid crystal cell having opposing first and second sides;
attaching a first polarization structure and a second polarization structure to the first side and the second side respectively, wherein the first polarization structure and the second polarization structure have perpendicular absorption axes, and one of the first polarization structure and the second polarization structure comprises a compensation film; and the number of the first and second groups,
attaching a viewing angle enlarging layer to a light exit side of the display panel, the viewing angle enlarging layer configured to increase an exit angle of light exiting from the light exit side.
9. The method as claimed in claim 8, further comprising, before the step of attaching the viewing angle enlarging layer to the light emitting side of the display panel:
forming a second refractive layer having a second refractive index on the substrate;
forming a plurality of grooves extending in the second refraction layer in the longitudinal direction; and the number of the first and second groups,
forming a first refraction layer on the second refraction layer, the first refraction layer having protrusions located in the plurality of grooves and flat portions located above the plurality of protrusions;
wherein the first refractive layer has a first refractive index smaller than the second refractive index, and the groove has a slope.
10. A display device characterized by comprising at least a display panel as claimed in any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210815511.3A CN115097665A (en) | 2022-07-08 | 2022-07-08 | Display panel, preparation method thereof and display device |
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