CN115685618B - Display panel and preparation method thereof - Google Patents
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- CN115685618B CN115685618B CN202211402944.2A CN202211402944A CN115685618B CN 115685618 B CN115685618 B CN 115685618B CN 202211402944 A CN202211402944 A CN 202211402944A CN 115685618 B CN115685618 B CN 115685618B
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- 238000002360 preparation method Methods 0.000 title abstract description 8
- 230000003287 optical effect Effects 0.000 claims abstract description 55
- 239000002131 composite material Substances 0.000 claims abstract description 52
- 239000000463 material Substances 0.000 claims abstract description 35
- 239000000758 substrate Substances 0.000 claims description 95
- 238000000034 method Methods 0.000 claims description 28
- 239000011159 matrix material Substances 0.000 claims description 24
- 239000004973 liquid crystal related substance Substances 0.000 claims description 23
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 238000009713 electroplating Methods 0.000 claims description 4
- 238000001259 photo etching Methods 0.000 claims description 4
- 238000005137 deposition process Methods 0.000 claims description 3
- 230000000007 visual effect Effects 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 14
- 239000010408 film Substances 0.000 description 36
- 238000010586 diagram Methods 0.000 description 2
- 239000012788 optical film Substances 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000004313 glare Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 229920002120 photoresistant polymer Polymers 0.000 description 1
- 238000005240 physical vapour deposition Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000003678 scratch resistant effect Effects 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
Classifications
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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
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
The application provides a display panel and a preparation method thereof, wherein the display panel comprises a display panel body and an optical composite film, wherein the display panel body comprises a light emitting side; the optical composite film is arranged on the light-emitting side of the display panel body, wherein the optical composite film comprises a base material and a reflecting layer, and a groove is formed in one side of the base material, which is away from the display panel body; the reflecting layer is accommodated in the groove and covers at least part of the side wall of the groove; the side wall covered with the reflecting layer forms an inclined angle relative to the normal line of the plane of the base material. According to the application, the groove is formed in one side of the base material, which is far away from the display panel body, and the reflecting layer is arranged on the side wall, which is inclined at an angle relative to the normal line of the plane of the base material, in the groove, so that the reflecting layer can reflect emergent light of the display panel body, the visual angle of the display panel is increased, and the display effect of the display panel under a large visual angle is improved.
Description
Technical Field
The application relates to the technical field of display, in particular to a display panel and a preparation method thereof.
Background
The liquid crystal display (Liquid Crystal Display, abbreviated as LCD) technology has the advantages of high image quality, power saving, thin body, wide application range, etc., and is widely used in various consumer electronic products such as mobile phones, televisions, personal digital assistants, digital cameras, notebook computers, desktop computers, etc., and becomes the mainstream of display devices.
Liquid crystal display panels currently on the mainstream market can be classified into the following types according to the alignment manner of liquid crystals: a vertical alignment (Vertical Alignment, VA) type, an In-Plane Switching (IPS) type, and a fringe field Switching (Fringe Field Switching, FFS) type. The VA-mode lcd panel has a very high contrast ratio compared with other types of lcd panels such as FFS and IPS, and has a very wide application in large-scale display, such as tv, wherein the high vertical alignment (High VerticalAlignment, HVA) mode is an important branch in the VA mode.
However, HVA-type lcd panels have the disadvantage of having a small viewing angle and poor display effect at a large viewing angle, and this problem needs to be solved.
Disclosure of Invention
The application provides a display panel and a preparation method thereof, which can effectively solve the technical problems of smaller visual angle and poorer display effect under a large visual angle of a liquid crystal display panel.
In one aspect, the present application provides a display panel including: the display panel body comprises a light emitting side; and an optical composite film disposed on the light-emitting side of the display panel body; wherein the optical composite film comprises: the substrate is provided with a groove at one side of the substrate, which is away from the display panel body; the reflecting layer is accommodated in the groove and covers at least part of the side wall of the groove; the side wall covered with the reflecting layer forms an inclined angle relative to the normal line of the plane of the base material.
Optionally, the inclination angle is a, wherein 0 ° < a+.ltoreq.30°.
Optionally, the side walls covered with the reflective layer in the grooves are arranged in an intersecting manner.
Optionally, the optical composite film further includes a light shielding layer, where the light shielding layer is accommodated in the groove and covers the light reflecting layer, and the orthographic projection of the light shielding layer on the substrate covers the orthographic projection of the light reflecting layer on the substrate.
Optionally, the light shielding layer and the light reflecting layer fill the grooves, so that a surface of the optical composite film facing away from the display panel body is a flat surface.
Optionally, the display panel body includes: a first substrate; a second substrate; a liquid crystal layer disposed between the first substrate and the second substrate; the first polaroid is arranged on one side of the first substrate, which is away from the liquid crystal layer; the second polaroid is arranged on one side of the second substrate, which is away from the liquid crystal layer, and the second polaroid is positioned on the light emitting side; the optical composite film is arranged on one side of the second polaroid, which is away from the second substrate.
Optionally, the display panel body includes a black matrix layer, and a plurality of openings are formed on the black matrix layer; wherein, orthographic projection of the groove on the black matrix layer is not overlapped with the plurality of openings.
Optionally, the display panel body further includes an electrode layer, the electrode layer includes a plurality of electrode units disposed in an array, and each of the electrode units includes: the main electrode comprises a first main electrode and a second main electrode which are vertically arranged; the plurality of branch electrodes, one end of each branch electrode is connected with the first main electrode or the second main electrode, and the other end of each branch electrode is radially arranged towards the intersection point deviating from the first main electrode and the second main electrode; and the orthographic projection of the groove on the electrode layer is overlapped with the main electrode.
In another aspect, the present application also provides a method for preparing a display panel, including the steps of:
providing a display panel body, wherein the display panel body comprises a light emitting side;
forming an optical composite film on the light-emitting side of the display panel body;
the step of forming an optical composite film on the light emitting side of the display panel body comprises the following steps:
providing a substrate, and forming a groove on the substrate by utilizing a photoetching process or an imprinting process;
forming a reflecting layer which is accommodated in the groove and covers at least part of the side wall of the groove by utilizing a physical weather deposition process or an electroplating process, wherein the side wall covered with the reflecting layer forms an inclined angle relative to the normal line of the plane of the base material;
and attaching the surface of one side of the base material, which is away from the groove, to the surface of the light emitting side of the display panel body.
Optionally, before the step of attaching the surface of the side of the substrate facing away from the groove to the surface of the light emitting side of the display panel body, the method further includes the following steps:
and forming a shading layer on one side of the reflecting layer, which is away from the base material, wherein the shading layer is accommodated in the groove and covers the reflecting layer, and the orthographic projection of the shading layer on the base material covers the orthographic projection of the reflecting layer on the base material.
The application provides a display panel and a preparation method thereof, wherein the display panel comprises an optical composite film arranged on the light emitting side of a display panel body, and the optical composite film comprises: the substrate comprises a groove, and the reflective layer is accommodated in the groove and covers at least part of the side wall of the groove. According to the application, the groove is formed in one side of the base material, which is far away from the display panel body, and the reflecting layer is arranged on the side wall, which forms an inclined angle relative to the normal line of the plane of the base material, in the groove, so that the reflecting layer can reflect emergent light of the display panel body, the viewing angle of the display panel is increased, the display effect of the display panel under a large viewing angle is improved, and the display quality of the display panel is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a light path of a maximum angle emergent ray of a VA type display panel body in the prior art;
FIG. 2 is a schematic diagram of a light path of a maximum angle emergent ray of a display panel according to an embodiment of the application;
FIG. 3 is a schematic cross-sectional view of a display panel according to an embodiment of the application;
fig. 4 is a schematic plan view of a black matrix and an electrode unit in a display panel body according to an embodiment of the application;
FIG. 5 is a schematic plan view of a light shielding layer and an electrode unit in an optical composite film according to an embodiment of the present application;
FIG. 6 is a schematic cross-sectional view of a solid portion of the optical composite film and the black matrix taken along the line MM in FIG. 5;
FIG. 7 is a schematic plan view of an electrode unit according to an embodiment of the present application;
FIG. 8 is a schematic plan view of a light shielding layer and an electrode unit in an optical composite film according to another embodiment of the present application;
FIG. 9 is a schematic cross-sectional view of a second backbone electrode of the optical composite membrane and electrode unit taken along the NN line in FIG. 8;
fig. 10 is a schematic flow chart of a method for manufacturing a display panel according to an embodiment of the present application;
fig. 11 is a schematic flow chart of step S02 according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to fall within the scope of the application. Furthermore, it should be understood that the detailed description is presented herein for purposes of illustration and description only, and is not intended to limit the application. In the present application, unless otherwise indicated, terms of orientation such as "upper" and "lower" are used to generally refer to the upper and lower positions of the device in actual use or operation, and specifically the orientation of the drawing figures; while "inner" and "outer" are for the outline of the device.
The following disclosure provides many different embodiments, or examples, for implementing different features of the application. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the application. Furthermore, the present application may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials. The following detailed description is given, respectively, to the description of the following embodiments, but the description of the embodiments is not to be taken as limiting the preferred embodiments.
Fig. 1 is a schematic view of a light path of a maximum angle emergent ray of a VA-mode display panel body in the prior art. Referring to fig. 1, the maximum angle of the VA-type display panel body in the prior art is AA, the light exit surface of the display panel body is BB, and the normal line of the light exit surface of the display panel body is CC, where the included angle between AA and CC is z 'and z' is 30 ° to 45 °, that is, the viewing angle range of the VA-type display panel body in the prior art is 90 ° (±30° to 45 °), the viewing angle is smaller, and when the user views the display screen of the display panel in a large viewing angle in the side view direction, the image quality is worse and the color cast is worse.
The embodiment of the application provides a display panel and a preparation method thereof, which can effectively solve the technical problems of smaller visual angle and poorer display effect under a large visual angle of a liquid crystal display panel.
Fig. 2 is a schematic diagram of an optical path of a maximum angle outgoing light of a display panel according to an embodiment of the application. Referring to fig. 2, an embodiment of the present application provides a display panel including: a display panel body 10 and an optical composite film 20, the display panel body 10 including a light-emitting side, the optical composite film 20 being disposed on the light-emitting side of the display panel body 10; wherein the optical composite film 20 includes: a substrate 21 and a reflective layer 22, wherein a groove 211 is formed on one side of the substrate 21 away from the display panel body 10; the reflective layer 22 is accommodated in the recess 211 and covers at least part of the sidewall of the recess 211; wherein the sidewall covered with the reflective layer 22 is inclined with respect to the normal of the plane of the substrate 21.
According to the display panel provided by the embodiment of the application, the optical composite film 20 which increases the emergent light angle of the display panel is arranged on the emergent side of the display panel body 10, so that the technical problems of smaller visual angle and poorer display effect under a large visual angle of the display panel are effectively solved.
Specifically, in the optical composite film 20, since the groove 211 is formed on a side of the substrate 21 facing away from the display panel body 10, and at least a portion of the side wall of the groove 211 forms an inclination angle with respect to the normal line of the plane where the substrate 21 is located, when the reflective layer 22 is formed on the side wall of the inclination angle with respect to the normal line of the plane where the substrate 21 is located, the reflective layer 22 can reflect the maximum angle emergent light of the display panel body 10 by a fixed angle, thereby increasing the viewing angle of the display panel, improving the display effect of the display panel under a large viewing angle, and improving the display quality of the display panel. Wherein, the plane of the substrate 21 is parallel to the surface of the display panel body 10 facing the substrate 21.
Further, the number of the grooves 211 may be plural, and at least part of the side walls of each groove 211 may have a fixed inclination angle with respect to the normal line of the plane of the substrate 21, so that the reflective effect of the reflective layer 22 contained in each groove 211 is kept consistent, and the display uniformity of the display panel is ensured while the viewing angle of the display panel is increased.
Further, the material of the substrate 21 is a transparent material, the surface of the substrate 21 facing away from the groove 211 is attached to the light-emitting surface of the display panel body 10, and the surface of the substrate 21 facing away from the groove 211 is a flat surface.
In some embodiments of the application, the tilt angle is a, wherein 0 ° < a+.ltoreq.30 °.
Specifically, the maximum angle light beam of the display panel body 10 is DD, the light emitting surface of the display panel body 10 is EE, and the normal line of the light emitting surface of the display panel body 10 is FF. Because the surface of the substrate 21 facing away from the groove 211 is attached to the light emitting surface of the display panel body 10, and the surface of the substrate 21 facing away from the groove 211 is a flat surface, correspondingly, the surface of the substrate 21 facing away from the groove 211 is coplanar with the light emitting surface of the display panel body 10, that is, the surface of the substrate 21 facing away from the groove 211 is EE, the plane where the substrate 21 is located is parallel to EE, and the normal line of the surface of the substrate 21 facing away from the groove 211 is FF. For example, the included angle between DD and FF is z, which is the same as the value range of z' in the prior art and is 30-45 degrees.
Assuming that the sidewall of the groove 211 forms a fixed inclination angle a with respect to a normal FF of a surface of the substrate 21 facing away from the groove 211, after the light DD emitted from the display panel body 10 at the maximum angle is reflected by the reflective layer 22, an included angle between the light GG emitted from the substrate 21 facing away from the display panel body 10 at the maximum angle and the normal FF of the substrate 21 facing away from the groove 211 is b, where b=z+2a, and the viewing angle range of the display panel is 90 ° (±b). Wherein, when z is 30 DEG, the inclination angle a can be selected from 0 DEG to 30 DEG
Preferably a is 30 °; when z is 45 °, the inclination angle a may be selected from any angle value from 0 ° to 22.5 °, and preferably a is 22.5 °.
That is, the angle between the maximum angle emergent ray of the display panel and the surface of the substrate 21 facing away from the side of the groove 211 can be increased by adjusting the inclination angle a of the display panel, so that the viewing angle range of the display panel is increased, the display effect of the display panel under a large viewing angle is improved, and the display quality of the display panel is improved. If z is 30 °, setting the tilt angle a to 15 °, b=30° +2×15° =60°, and increasing the viewing angle range of the display panel by 30 °; if z is 30 °, the tilt angle a is set to 25 °, and b=30° +2×25° =80°, the viewing angle range of the display panel is increased by 50 °.
In addition, the inclination angle a can be directly set through a patterning process, so that the inclination angle a is not limited by material characteristics, and compared with the mode of increasing the visual angle through combination of film layers with different refractive indexes in the prior art, the inclination angle a has a larger visual angle adjustment range, and the manufacturing difficulty in the process is relatively low.
In some embodiments of the present application, the sidewalls of the grooves 211 covered with the light reflecting layer 22 are disposed to intersect.
Specifically, the shape of the side walls disposed in an intersecting manner in the cross-section direction perpendicular to the plane of the substrate 21 is V-shaped, that is, the groove 211 has no bottom wall, so that the space occupied by the groove 211 can be reduced as much as possible while the reflective effect of the reflective layer 22 covering the side walls is ensured, and the transmittance of the display panel is ensured. Further, the shape of the groove may be conical, pyramid, or other shapes defined by a plurality of flat surfaces.
In some embodiments of the present application, the optical composite film 20 further includes a light shielding layer 23, where the light shielding layer 23 is accommodated in the groove 211 and covers the light reflecting layer 22, and an orthographic projection of the light shielding layer 23 on the substrate 21 covers an orthographic projection of the light reflecting layer 22 on the substrate 21.
Specifically, the material of the light reflecting layer 22 is, for example, metal, and the light reflecting layer 22 can reflect not only the outgoing light of the display panel body 10, but also the ambient light emitted toward the display panel. In this case, the arrangement of the reflective layer 22 may cause a glare problem during the display process of the display panel, which affects the look and feel of the user. According to the application, the light shielding layer 23 is arranged on one side of the light reflecting layer 22, which is far away from the base material 21, and the vertical projection of the light shielding layer 23 on the base material 21 covers the vertical projection of the light reflecting layer 22 on the base material 21, so that the ambient light emitted to the display panel can be absorbed, the dazzling problem is avoided, and the display effect and the user's look and feel of the display panel are improved.
In some embodiments of the present application, the light shielding layer 23 and the light reflecting layer 22 fill the grooves, so that the surface of the optical composite film 20 facing away from the display panel body 10 is a flat surface.
Specifically, the display panel further includes other components or optical films, such as a scratch-resistant layer, a cover plate, etc., disposed on a side of the optical composite film 20 facing away from the display panel body 10, and the surface of the optical composite film 20 facing away from the display panel body 10 is configured as a flat surface, so that the following lamination stability of the other components or optical films can be ensured, and the service life of the display panel can be prolonged.
Fig. 3 is a schematic cross-sectional view of a display panel body 10 according to an embodiment of the application. Referring to fig. 3, in some embodiments of the present application, the display panel body 10 includes a first substrate 11, a second substrate 12, a liquid crystal layer 13, a first polarizer 14, and a second polarizer 15. A liquid crystal layer 13 is disposed between the first substrate 11 and the second substrate 12; the first polarizer 14 is arranged on one side of the first substrate 11 facing away from the liquid crystal layer 13; the second polarizer 15 is disposed on a side of the second substrate 12 facing away from the liquid crystal layer 13, and the second polarizer 15 is located on the light emitting side; wherein the optical composite film 20 is disposed on a side of the second polarizer 15 facing away from the second substrate 12.
Specifically, the outgoing light of the display panel body 10 is supplied by a backlight module disposed on a side of the display panel body 10 facing away from the optical composite film 20, the first polarizer 14 is located on the light incoming side of the display panel body 10, the second polarizer 15 is located on the light outgoing side of the display panel body 10, the first polarizer 14 and the second polarizer 15 have polarization axes (light transmission axes) with fixed directions, and the polarization axes of the first polarizer 14 and the second polarizer 15 are mutually perpendicular.
Since the second polarizer 15 has a filtering effect on the outgoing light of the display panel body 10, if the optical composite film 20 is disposed on the side of the second polarizer 15 facing the second substrate 12, a certain amount of outgoing light cannot pass through the second polarizer 15, and the optical efficiency is reduced. According to the application, the optical composite film 20 is arranged on the side, away from the second substrate 12, of the second polarizer 15, so that the optical efficiency can be considered under the condition of increasing the emergent light angle and the visual angle of the display panel.
Fig. 4 is a schematic plan view of a black matrix and an electrode unit in a display panel body according to an embodiment of the application; FIG. 5 is a schematic plan view of a light shielding layer and an electrode unit in an optical composite film according to an embodiment of the present application; fig. 6 is a schematic cross-sectional view of a solid portion of the optical composite film and the black matrix taken along the MM line in fig. 5. As shown in fig. 4, 5 and 6, in some embodiments of the present application, the display panel body 10 includes a black matrix layer 100, and a plurality of openings 101 are formed in the black matrix layer 100; wherein, the orthographic projection of the groove 211 on the black matrix layer 100 is not overlapped with the plurality of openings 101.
Specifically, the first substrate 11 or the second substrate 12 includes the black matrix layer 100, and the black matrix layer 100 is formed of a black photoresist, which has a light shielding effect, that is, the display panel can transmit light only in a region corresponding to the black matrix layer 100 where the opening 101 is provided, and cannot transmit light in a region other than the opening 101.
Further, the first substrate 11 is an array substrate, the second substrate 12 is a color film substrate, and the black matrix layer 100 is disposed on the second substrate 12. However, the present application is not limited to the arrangement position of the black matrix layer 100, and for example, when the display panel is a BOA type display panel, the black matrix layer 100 may be disposed on the first substrate 11.
Further, the display panel body 10 includes a plurality of pixel regions arranged in an array, and the pixel regions are arranged corresponding to the openings 101 of the black matrix layer 100 in a direction perpendicular to the display panel body 10. Wherein the substrate 21 covers the black matrix layer 100.
Fig. 7 is a schematic plan view of an electrode unit according to an embodiment of the application. Referring to fig. 4 and 7, in some embodiments of the present application, the display panel body 10 further includes an electrode layer 200, the electrode layer 200 includes a plurality of electrode units 201 arranged in an array, and the electrode units 201 are arranged in one-to-one correspondence with the pixel regions. Wherein each electrode unit 201 includes: a backbone electrode including a first backbone electrode 2011 and a second backbone electrode 2012 disposed vertically; the plurality of branch electrodes 2013, one end of the plurality of branch electrodes 2013 is connected to the first trunk electrode 2011 or the second trunk electrode 2012, and the other end of the branch electrode 2013 is radially arranged toward an intersection point deviating from the first trunk electrode 2011 and the second trunk electrode 2012.
FIG. 8 is a schematic plan view of a light shielding layer and an electrode unit in an optical composite film according to another embodiment of the present application; fig. 9 is a schematic cross-sectional view of the second backbone electrode of the optical composite film and electrode unit taken along the NN line in fig. 8. As shown in fig. 7, 8 and 9, in this embodiment, the structure of the electrode layer 200 is the same as that of the above embodiment, but the vertical projection of the light shielding layer 23 on the electrode layer 200 overlaps the main electrode.
Specifically, the electrode layer 200 is a pixel electrode layer, and the electrode layer 200 is disposed on the first substrate 11, for example. The display panel is an HVA type liquid crystal display panel, and the electrode unit 201 has a multi-domain structure, and since the display panel body in the HVA type liquid crystal display panel does not have a display function at a portion corresponding to the main electrode, the present application can avoid the problem of reduced transmittance of the display panel due to the arrangement of the reflective layer 22 and the light shielding layer 23 in the groove 211 as much as possible while increasing the light emitting angle and the visual angle of the display panel by overlapping the vertical projection of the light shielding layer 23 on the electrode layer 200 with the main electrode.
It should be noted that, in each electrode unit 201, the regions of the liquid crystal layer 13 corresponding to the branch electrodes 2013 in different regions have different liquid crystal deflection angles, and the pixel regions corresponding to the branch electrodes 2013 are important regions for implementing the display function of the display panel body 10. According to the application, the vertical projection of the light shielding layer 23 on the electrode layer 200 is arranged corresponding to the main electrode, so that the light reflecting layer 22 corresponding to the light shielding layer 23 can be arranged adjacent to the branch electrode 2013, the emergent light angle of the display panel body 10 can be more effectively regulated, the visual angle regulating effect of the optical composite film is optimal, and the display quality and the display uniformity of the display panel are greatly improved.
On the other hand, the application also provides a preparation method of the display panel.
Fig. 10 is a schematic flow chart of a method for manufacturing a display panel according to an embodiment of the application. Referring to fig. 10 and 2, the manufacturing method of the display panel includes step S01 and step S02.
The step S01 is as follows: a display panel body 10 is provided, the display panel body 10 comprising a light emitting side.
The step S02 is as follows: an optical composite film 20 is formed on the light-emitting side of the display panel body 10.
Fig. 11 is a schematic flow chart of step S02 according to an embodiment of the present application. Referring to fig. 11 and 2, the step S02 includes:
step S021: providing a substrate 21, forming a groove 211 on the substrate 21 by using a photoetching process or an imprinting process, and enabling at least part of side walls of the groove 211 to form an inclined angle relative to the normal line of the surface of the substrate 21, which is away from one side of the groove 211;
step S022: forming a reflective layer 22 accommodated in the recess 211 and covering at least part of the sidewall of the recess 211 by using a physical vapor deposition process or an electroplating process, wherein the sidewall covered with the reflective layer 22 forms an inclined angle with respect to a normal line of a plane of the substrate 21;
step S024: the surface of the substrate 21 facing away from the recess 211 is attached to the surface of the light-emitting side of the display panel body 10.
Further, before the step S024 of attaching the surface of the side of the substrate 21 facing away from the recess 211 to the surface of the light emitting side of the display panel body 10, the method further includes:
step S023: a light shielding layer 23 is formed on a side of the light reflecting layer 22 facing away from the substrate 21, the light shielding layer 23 is accommodated in the groove 211 and covers the light reflecting layer 22, and the orthographic projection of the light shielding layer 23 on the substrate 21 covers the orthographic projection of the light reflecting layer 22 on the substrate 21.
In summary, an embodiment of the present application provides a display panel and a method for manufacturing the same, where the display panel includes: the display panel comprises a display panel body and an optical composite film, wherein the display panel body comprises a light emitting side; the optical composite film is arranged on the light-emitting side of the display panel body, wherein the optical composite film comprises a base material and a reflecting layer, and a groove is formed in one side of the base material, which is away from the display panel body; the reflecting layer is accommodated in the groove and covers at least part of the side wall of the groove; the side wall covered with the reflecting layer forms an inclined angle relative to the normal line of the plane of the base material. According to the application, the groove is formed in one side of the base material, which is far away from the display panel body, and the reflecting layer is arranged on the side wall, which is inclined at an angle relative to the normal line of the plane of the base material, in the groove, so that the reflecting layer can reflect emergent light of the display panel body, the visual angle of the display panel is increased, and the display effect of the display panel under a large visual angle is improved.
The foregoing has described in detail a display panel and a method for manufacturing the same, which are provided by the embodiments of the present application, wherein specific examples are applied to illustrate the principles and embodiments of the present application, and the above examples are only used to help understand the method and core idea of the present application; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present application, the present description should not be construed as limiting the present application.
Claims (15)
1. A display panel, the display panel comprising:
the display panel body comprises a light emitting side; and
an optical composite film arranged on the light-emitting side of the display panel body;
wherein the optical composite film comprises:
the substrate is provided with a groove at one side of the substrate, which is away from the display panel body; and
the reflecting layer is accommodated in the groove and covers at least part of the side wall of the groove;
wherein the side wall covered with the reflecting layer forms an inclined angle relative to the normal line of the plane of the base material;
the display panel body comprises a black matrix layer, and a plurality of openings are formed in the black matrix layer; wherein, orthographic projection of the groove on the black matrix layer is not overlapped with the plurality of openings.
2. The display panel according to claim 1, wherein the tilt angle is a, wherein 0 ° < a+.ltoreq.30 °.
3. The display panel of claim 1, wherein the sidewalls of the recess covered with the light reflecting layer are disposed to intersect.
4. The display panel of claim 1, wherein the optical composite film further comprises a light shielding layer, the light shielding layer is accommodated in the groove and covers the light reflecting layer, and an orthographic projection of the light shielding layer on the substrate covers an orthographic projection of the light reflecting layer on the substrate.
5. The display panel of claim 4, wherein the light shielding layer and the light reflecting layer fill the grooves such that a surface of the optical composite film facing away from the display panel body is a flat surface.
6. The display panel according to any one of claims 1 to 5, wherein the display panel body includes:
a first substrate;
a second substrate;
a liquid crystal layer disposed between the first substrate and the second substrate;
the first polaroid is arranged on one side of the first substrate, which is away from the liquid crystal layer;
the second polaroid is arranged on one side of the second substrate, which is away from the liquid crystal layer, and the second polaroid is positioned on the light emitting side;
the optical composite film is arranged on one side of the second polaroid, which is away from the second substrate.
7. A display panel, the display panel comprising:
the display panel body comprises a light emitting side; and
an optical composite film arranged on the light-emitting side of the display panel body;
wherein the optical composite film comprises:
the substrate is provided with a groove at one side of the substrate, which is away from the display panel body; and
the reflecting layer is accommodated in the groove and covers at least part of the side wall of the groove;
wherein the side wall covered with the reflecting layer forms an inclined angle relative to the normal line of the plane of the base material;
the display panel body includes an electrode layer including a plurality of electrode units arranged in an array, each of the electrode units including:
the main electrode comprises a first main electrode and a second main electrode which are vertically arranged;
the plurality of branch electrodes, one end of each branch electrode is connected with the first main electrode or the second main electrode, and the other end of each branch electrode is radially arranged towards the intersection point deviating from the first main electrode and the second main electrode;
and the orthographic projection of the groove on the electrode layer is overlapped with the main electrode.
8. The display panel according to claim 7, wherein the tilt angle is a, wherein 0 ° < a+.ltoreq.30 °.
9. The display panel of claim 7, wherein the sidewalls of the recess covered with the light reflecting layer are disposed to intersect.
10. The display panel of claim 7, wherein the optical composite film further comprises a light shielding layer, the light shielding layer is accommodated in the groove and covers the light reflecting layer, and an orthographic projection of the light shielding layer on the substrate covers an orthographic projection of the light reflecting layer on the substrate.
11. The display panel of claim 10, wherein the light shielding layer and the light reflecting layer fill the grooves such that a surface of the optical composite film facing away from the display panel body is a flat surface.
12. The display panel according to any one of claims 7 to 11, wherein the display panel body includes:
a first substrate;
a second substrate;
a liquid crystal layer disposed between the first substrate and the second substrate;
the first polaroid is arranged on one side of the first substrate, which is away from the liquid crystal layer;
the second polaroid is arranged on one side of the second substrate, which is away from the liquid crystal layer, and the second polaroid is positioned on the light emitting side;
the optical composite film is arranged on one side of the second polaroid, which is away from the second substrate.
13. A method for manufacturing a display panel, comprising the steps of:
providing a display panel body, wherein the display panel body comprises a light emitting side;
forming an optical composite film on the light-emitting side of the display panel body;
the step of forming an optical composite film on the light emitting side of the display panel body comprises the following steps:
providing a substrate, and forming a groove on the substrate by utilizing a photoetching process or an imprinting process;
forming a reflecting layer which is accommodated in the groove and covers at least part of the side wall of the groove by utilizing a physical weather deposition process or an electroplating process, wherein the side wall covered with the reflecting layer forms an inclined angle relative to the normal line of the plane of the base material;
attaching the surface of one side of the base material, which is away from the groove, to the surface of the light emitting side of the display panel body;
the display panel body comprises a black matrix layer, and a plurality of openings are formed in the black matrix layer; wherein, orthographic projection of the groove on the black matrix layer is not overlapped with the plurality of openings.
14. A method for manufacturing a display panel, comprising the steps of:
providing a display panel body, wherein the display panel body comprises a light emitting side;
forming an optical composite film on the light-emitting side of the display panel body;
the step of forming an optical composite film on the light emitting side of the display panel body comprises the following steps:
providing a substrate, and forming a groove on the substrate by utilizing a photoetching process or an imprinting process;
forming a reflecting layer which is accommodated in the groove and covers at least part of the side wall of the groove by utilizing a physical weather deposition process or an electroplating process, wherein the side wall covered with the reflecting layer forms an inclined angle relative to the normal line of the plane of the base material;
attaching the surface of one side of the base material, which is away from the groove, to the surface of the light emitting side of the display panel body;
wherein, the display panel body includes the electrode layer, the electrode layer includes a plurality of electrode units of array setting, every the electrode unit includes:
the main electrode comprises a first main electrode and a second main electrode which are vertically arranged;
the plurality of branch electrodes, one end of each branch electrode is connected with the first main electrode or the second main electrode, and the other end of each branch electrode is radially arranged towards the intersection point deviating from the first main electrode and the second main electrode;
and the orthographic projection of the groove on the electrode layer is overlapped with the main electrode.
15. The method of manufacturing a display panel according to claim 13 or 14, further comprising, before the step of bonding the surface of the side of the substrate facing away from the groove to the surface of the light-emitting side of the display panel body, the steps of:
and forming a shading layer on one side of the reflecting layer, which is away from the base material, wherein the shading layer is accommodated in the groove and covers the reflecting layer, and the orthographic projection of the shading layer on the base material covers the orthographic projection of the reflecting layer on the base material.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211402944.2A CN115685618B (en) | 2022-11-09 | 2022-11-09 | Display panel and preparation method thereof |
| PCT/CN2023/127860 WO2024099145A1 (en) | 2022-11-09 | 2023-10-30 | Display panel and manufacturing method therefor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211402944.2A CN115685618B (en) | 2022-11-09 | 2022-11-09 | Display panel and preparation method thereof |
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| CN115685618A CN115685618A (en) | 2023-02-03 |
| CN115685618B true CN115685618B (en) | 2023-09-26 |
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| CN202211402944.2A Active CN115685618B (en) | 2022-11-09 | 2022-11-09 | Display panel and preparation method thereof |
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| WO (1) | WO2024099145A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115685618B (en) * | 2022-11-09 | 2023-09-26 | Tcl华星光电技术有限公司 | Display panel and preparation method thereof |
| CN117518539A (en) * | 2022-12-30 | 2024-02-06 | Tcl华星光电技术有限公司 | Liquid crystal display panel with switchable viewing angle and display device |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN115685618A (en) | 2023-02-03 |
| WO2024099145A1 (en) | 2024-05-16 |
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